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Tagami K, Iwama N, Hamada H, Tomita H, Kudo R, Kumagai N, Wang H, Izumi S, Watanabe Z, Ishikuro M, Obara T, Tatsuta N, Metoki H, Ota C, Sugiyama T, Kuriyama S, Arima T, Yaegashi N, Saito M. Maternal birth weight as an indicator of early and late gestational diabetes mellitus: The Japan Environment and Children's Study. J Diabetes Investig 2024. [PMID: 38391358 DOI: 10.1111/jdi.14159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 01/20/2024] [Accepted: 01/25/2024] [Indexed: 02/24/2024] Open
Abstract
AIMS This study aimed to investigate the association of maternal birth weight (MBW) with early and late gestational diabetes mellitus (GDM). METHODS A total of 69318 pregnant Japanese women were included in this birth cohort study. The associations between maternal birth weight and early gestational diabetes mellitus (diagnosed at <24 gestational weeks) and late GDM (diagnosed at ≥24 gestational weeks) were investigated using a multinomial logistic regression model, with an maternal birth weight of 3000-3499 g as the reference category. RESULTS Lower maternal birth weight was associated with higher odds of developing early and late gestational diabetes mellitus (P < 0.0001 and P < 0.0001, respectively). The adjusted odds ratios (aORs) for early gestational diabetes mellitus in participants with a MBW of <2500 g and 2500-2999 g were 1.345 (95% confidence interval [CI]: 0.912-1.984) and 1.338 (95% CI: 1.098-1.629), respectively. The aORs for late gestational diabetes mellitus in participants with a MBW of <2500 g and 2500-2999 g were, 1.657 (95% CI: 1.298-2.115) and 1.218 (95% CI: 1.058-1.402), respectively. CONCLUSIONS Regardless of the gestational age when gestational diabetes mellitus was diagnosed, a lower maternal birth weight was associated with an increased risk of gestational diabetes mellitus. Furthermore, the association of a MBW <2500 g with late gestational diabetes mellitus tended to be stronger than that with early gestational diabetes mellitus.
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Affiliation(s)
- Kazuma Tagami
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Hirotaka Hamada
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Hasumi Tomita
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Rie Kudo
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Natsumi Kumagai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Hongxin Wang
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Seiya Izumi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Mami Ishikuro
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Taku Obara
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, Sendai, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Chiharu Ota
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Department of Pediatrics, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Takashi Sugiyama
- Department of Obstetrics and Gynecology, Ehime University Graduate School of Medicine, Toon, Ehime, Japan
| | - Shinichi Kuriyama
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- International Research Institute of Disaster Science, Tohoku University, Sendai, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nobuo Yaegashi
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Department of Maternal and Fetal Therapeutics, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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Hamada H, Iwama N, Tomita H, Tagami K, Kumagai N, Kudo R, Wang H, Izumi S, Watanabe Z, Ishikuro M, Obara T, Tatsuta N, Metoki H, Saito M, Ota C, Kuriyama S, Arima T, Yaegashi N. Association between Maternal Birth Weight and Prevalence of Congenital Malformations in Offspring: The Japanese Environment and Children's Study. Nutrients 2024; 16:531. [PMID: 38398855 PMCID: PMC10893182 DOI: 10.3390/nu16040531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 02/11/2024] [Accepted: 02/12/2024] [Indexed: 02/25/2024] Open
Abstract
Congenital malformations are functional and structural alterations in embryonic or foetal development resulting from a variety of factors including maternal health status. This study aimed to investigate the association between maternal birth weight (MBW) and the prevalence of congenital malformations in offspring using data from a nationwide birth cohort study in Japan including 103,060 pregnancies. A binary logistic regression model with adjustment for various covariates revealed that an MBW of <2500 g (low MBW) was associated with an increased risk of congenital heart disease (adjusted odds ratio: 1.388, [95% confidence interval: 1.075-1.792]), angioma (1.491 [1.079-2.059]), and inguinal hernia (1.746, [1.189-2.565]), while those with an MBW of ≥4000 g (high MBW) were associated with congenital anomalies of the urinary tract (2.194, [1.261-3.819]) and arrhythmia (1.775, [1.157-2.725]) compared with those with an MBW of 3000-3499 g. Low MBW was associated with cleft lip and/or palate (1.473, [1.052-2.064]), congenital heart disease (1.615, [1.119-2.332]), genital organs (1.648, [1.130-2.405]), hypospadias (1.804, [1.130-2.881]), and inguinal hernia (1.484, [1.189-1.851]) in male infants and CAKUT (1.619, [1.154-2.273]) in female infants, whereas high MBW was associated with congenital heart disease (1.745, [1.058-2.877]) and CAKUT (2.470, [1.350-4.517]) in male infants. The present study is the first to demonstrate a link between MBW and congenital malformations in Japanese children. While these results must be interpreted with caution, MBW should be considered a major predictor of congenital malformation risk.
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Affiliation(s)
- Hirotaka Hamada
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan
| | - Hasumi Tomita
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Kazuma Tagami
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Natsumi Kumagai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Rie Kudo
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Hongxin Wang
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Seiya Izumi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Mami Ishikuro
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Taku Obara
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, 1-15-1 Fukumuro, Sendai 983-8536, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
- Department of Maternal and Fetal Therapeutics, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Chiharu Ota
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
- Department of Paediatrics, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Shinichi Kuriyama
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
- International Research Institute of Disaster Science, Tohoku University, 468-1, Aramaki, Sendai 980-8572, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
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Kanamori K, Suzuki T, Tatsuta N, Ota C. Environments affect blood pressure in toddlers: The Japan Environment and Children's Study. Pediatr Res 2024; 95:367-376. [PMID: 37634037 PMCID: PMC10798899 DOI: 10.1038/s41390-023-02796-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/11/2023] [Accepted: 08/16/2023] [Indexed: 08/28/2023]
Abstract
BACKGROUND The primary objective of this study was to examine risk factors for toddler's hypertension. METHODS Subjects of this study were children and parents participating in a national birth cohort study in Japan, the Japan Environment and Children's Study. We measured the children's blood pressure (BP) at 2 and 4 years old. We obtained children's and parents' backgrounds from the questionnaire. We investigated the factors that affect BP elevation. RESULTS Within 4988 participants, the mean systolic BP at 2 years old was 91.2 mmHg for boys and 90.0 mmHg for girls. The mean systolic BP at 4 years old was 93.8 mmHg for boys and 93.1 mmHg for girls. Parental smoking was associated with elevated values of BP at 2 and 4 years old. Obesity, gestational hypertension, and parental lower education were associated with elevated values of BP at 4 years old. Hypertensive group had a significantly higher obesity rate. The mother's lower education and parental smoking were involved in hypertensive groups. CONCLUSION Parental smoking had a significant effect on BP even in early toddlers. We emphasize the importance of avoiding second-hand smoking from early infancy to prevent future lifestyle-related illnesses including hypertension. IMPACT The mean systolic BP at 2 years old was 91.2 mmHg for boys and 90.0 mmHg for girls. The mean systolic BP at 4 years old was 93.8 mmHg for boys and 93.1 mmHg for girls. Obesity, parental smoking, and lower education were associated with hypertension at 4 years old. Parental smoking was associated with hypertension at 2 and 4 years old. We emphasize the importance of avoiding second-hand smoking from early infancy.
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Affiliation(s)
- Keita Kanamori
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
- Department of Pediatrics, Iwate Prefectural Iwai Hospital, Ichinoseki, Japan.
| | - Tomohisa Suzuki
- Department of Pediatrics, Tohoku University Hospital, Sendai, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Chiharu Ota
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Pediatrics, Tohoku University Hospital, Sendai, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
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4
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Tomita H, Iwama N, Hamada H, Kudo R, Tagami K, Kumagai N, Sato N, Izumi S, Sakurai K, Watanabe Z, Ishikuro M, Obara T, Tatsuta N, Hoshiai T, Metoki H, Saito M, Sugawara J, Kuriyama S, Arima T, Yaegashi N. The impact of maternal and paternal birth weights on infant birth weights: the Japan environment and children's study. J Dev Orig Health Dis 2023; 14:699-710. [PMID: 38247363 DOI: 10.1017/s2040174423000387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024]
Abstract
This study aimed to evaluate the association between parental and infant birth weights in Japan. In total, 37,504 pregnant Japanese women and their partners were included in this birth cohort study. A multinomial logistic regression model was used to evaluate the associations of parental birth weights with small-for-gestational-age (SGA) or large-for-gestational-age (LGA) infants. Associations between parental birth weight and low birth weight (LBW) infants or macrosomia were also examined, and linear associations between parental birth weight and SGA or LGA were found. The adjusted odds ratios (aORs) for SGA infants per 500 g decrease in maternal and paternal birth weights were 1.50 (95% confidence interval [CI],1.43-1.58) and 1.31 (95% CI, 1.25-1.38), respectively. The aORs for LGA infants per 500 g increase in maternal and paternal birth weights were 1.53 (95% CI, 1.47-1.60) and 1.41 (95% CI, 1.35-1.47), respectively. The association between parental birth weight and LBW infants or macrosomia was also linear. The aORs for LBW infants per 500 g decrease in maternal and paternal birth weights were 1.47 (95% CI, 1.40-1.55) and 1.25 (95% CI, 1.19-1.31), respectively. The aORs for macrosomia per 500 g increase in maternal and paternal birth weights were 1.59 (95% CI, 1.41-1.79) and 1.40 (95% CI, 1.23-1.60), respectively. Parental birth weight was found to be associated with infant birth weight even after adjusting for various parental factors. Furthermore, maternal birth weight was more strongly associated with infant birth weight than with paternal birth weight.
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Affiliation(s)
- Hasumi Tomita
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
| | - Hirotaka Hamada
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Rie Kudo
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Kazuma Tagami
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Natsumi Kumagai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Naoto Sato
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Seiya Izumi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Mami Ishikuro
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Taku Obara
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Tetsuro Hoshiai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, Sendai, MI, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- Department of Maternal and Fetal Therapeutics, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Junichi Sugawara
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
- Suzuki Memorial Hospital, Iwanuma, MI, Japan
| | - Shinichi Kuriyama
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
- Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- International Research Institute of Disaster Science, Tohoku University, Sendai, MI, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, MI, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, MI, Japan
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5
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Tagami K, Iwama N, Hamada H, Tomita H, Kudo R, Kumagai N, Sato N, Izumi S, Sakurai K, Watanabe Z, Ishikuro M, Obara T, Tatsuta N, Hoshiai T, Metoki H, Saito M, Sugawara J, Kuriyama S, Arima T, Yaegashi N. Maternal birth weight as an indicator of early-onset and late-onset hypertensive disorders of pregnancy: The Japan Environment and Children's study. Pregnancy Hypertens 2023; 34:159-168. [PMID: 37992490 DOI: 10.1016/j.preghy.2023.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2022] [Revised: 10/28/2023] [Accepted: 11/01/2023] [Indexed: 11/24/2023]
Abstract
OBJECTIVES This study aimed to investigate the association between maternal birth weight (MBW) and hypertensive disorders of pregnancy (HDP) according to the gestational age when HDP develops. STUDY DESIGN A total of 77,345 subjects were included in this prospective birth cohort study. The association between MBW and HDP was investigated by a multinomial logistic regression model. MAIN OUTCOME MEASURES Early-onset HDP (EO-HDP), preterm late-onset HDP (preterm LO-HDP), and term late-onset HDP (term LO-HDP). RESULTS Lower MBW was associated with higher odds of preterm and term LO-HDP (p-values for trend < 0.0001 and = 0.0005, respectively). A linear association between MBW and EO-HDP was observed (p-values for trend = 0.0496). The shape of the association between MBW and preterm LO-HDP was a combination of the associations between MBW with EO-HDP or LO-HDP. The effect size of the association between MBW < 2,500 g and EO-HDP was lower than that of MBW < 2,500 g with preterm or term LO-HDP. The adjusted odds ratios for EO-HDP, preterm LO-HDP, and term LO-HDP in subjects with MBW < 2,500 g were 1.052 (95 % confidence interval [CI]: 0.665-1.664), 1.745 (95 % CI: 1.220-2.496), and 1.496 (95 % CI: 1.154-1.939), respectively. CONCLUSIONS MBW was associated with HDP, regardless of gestational age when HDP developed. Furthermore, the association of MBW < 2,500 g with preterm or term LO-HDP was stronger than that with EO-HDP.
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Affiliation(s)
- Kazuma Tagami
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan; Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan.
| | - Hirotaka Hamada
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Hasumi Tomita
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Rie Kudo
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Natsumi Kumagai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Naoto Sato
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Seiya Izumi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Mami Ishikuro
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Taku Obara
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Tetsuro Hoshiai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, 1-15-1 Fukumuro, Sendai 983-8536, Miyagi, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan; Department of Maternal and Fetal Therapeutics, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Junichi Sugawara
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Shinichi Kuriyama
- Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Division of Molecular Epidemiology, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan; International Research Institute of Disaster Science, Tohoku University, 468-1, Aramaki, Sendai 980-8572, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8575, Miyagi, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
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Yaginuma-Sakurai K, Saito C, Kasahara Y, Tsuno K, Yoshimasu K, Tatsuta N, Goto M, Nakai K. Work engagement and associated factors among Japanese registered dietitians and dietitians: a cross-sectional study. Ind Health 2023:2023-0094. [PMID: 38044122 DOI: 10.2486/indhealth.2023-0094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2023]
Abstract
Healthcare services provided by registered dietitians and dietitians have been changing because of evolving lifestyles and population dynamics, leading to subsequent changes in the occupational status and experiences of these professionals. However, few studies have examined occupational stress among registered dietitians and dietitians. This study involved a cross-sectional survey to investigate the status and associated factors of work engagement among registered dietitians and dietitians, whose professions differ based on licensing processes and scope of work. A total of 3,593 questionnaires were distributed, 1,890 responses were received, and 1,654 valid questionnaires were analyzed. Work engagement was measured using the Utrecht Work Engagement Scale. Multiple regression analysis was conducted to examine the associations between work engagement and each factor. The work engagement scores of dietitians were significantly lower than those of registered dietitians. Further, work engagement was associated with age, workplace, coworker support, and effort-reward ratio for both registered dietitians and dietitians. However, exercise habit was a significant factor associated with work engagement only among dietitians. Work engagement among registered dietitians was comparable to that of typical Japanese workers, whereas it was lower among dietitians. The findings highlight the importance of considering associated factors to improve work engagement further, especially among dietitians.
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Affiliation(s)
- Kozue Yaginuma-Sakurai
- Department of Human Health and Nutrition, College of Human Health and Nutrition, Shokei Gakuin University, Japan
| | - Chotoku Saito
- Department of Nutrition, Faculty of Health Science, Aomori University of Health and Welfare, Japan
| | - Yoshiko Kasahara
- Department of Food and Health Sciences, Faculty of Health and Human Development, The University of Nagano, Japan
| | - Kanami Tsuno
- School of Health Innovation, Kanagawa University of Human Services, Japan
| | - Kouichi Yoshimasu
- Department of Psychological and Behavioral Sciences, School of Human Sciences, Kobe College, Japan
| | - Nozomi Tatsuta
- Health and Environmental Risk Division, National Institute for Environmental Studies, Japan
| | - Miki Goto
- Department of Nutrition Science, Sendai Seiyo Gakuin College, Japan
| | - Kunihiko Nakai
- School of Sport and Health Science, Tokai Gakuen University, Japan
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Dodo M, Ota C, Ishikawa M, Koseki I, Sugawara J, Tatsuta N, Arima T, Yaegashi N, Koseki T. Timing of Primary Tooth Eruption in Infants Observed by Their Parents. Children (Basel) 2023; 10:1730. [PMID: 38002821 PMCID: PMC10670756 DOI: 10.3390/children10111730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 09/29/2023] [Accepted: 10/18/2023] [Indexed: 11/26/2023]
Abstract
BACKGROUND The timing of primary teeth eruption is a visible indicator of infant physical growth other than body weight or height. It also reflects neurological integrity and development as well as nutrition, socioeconomic state, or underlying diseases. Therefore, the timing of primary teeth eruption is one of the major concerns for parents in health checkups for infants and children. However, the detailed developmental timing of teeth eruption differs depending on the survey methodology, country, or generation. We hypothesized that the timing of primary teeth eruption differs between the medical checkup by dentists and the daily records by parents. METHODS We conducted a questionnaire survey on the date of eruption of primary teeth as an adjunct study among Miyagi Regional Center participants in the Japan Environment and Children's Study (JECS), a large-scale birth cohort study. A total of 1695 responses (3793 participants) were analyzed. RESULTS The median ages of eruption were 7.1 months (male) and 7.6 months (female) for mandibular primary central incisors, 8.7 months (male) and 9.2 months (female) for maxillary primary central incisors, 10.0 months (male) and 10.3 months (female) for maxillary primary lateral incisors, and 10.4 months (male) and 10.8 months (female) for mandibular primary lateral incisors, which were earlier than the reported timings based on dental check-ups. Comparing the eruption time of preterm and term infants, the eruption time was earlier in preterm infants in the corrected ages. CONCLUSIONS The eruption timing observed and described by the parents is earlier than that examined by dentists at regular check-ups. In addition to examining the primary teeth eruption of full-term birth children, we also examined that of preterm birth children because of the increasing number of premature births. To the best of our knowledge, this is the first report from a large cohort study to clarify the eruption time of primary teeth monitored by parents.
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Affiliation(s)
- Mina Dodo
- Division of Preventive Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (M.D.); (M.I.); (I.K.); (T.K.)
| | - Chiharu Ota
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan;
- Department of Pediatrics, Tohoku University Hospital, Sendai 980-8574, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (J.S.); (T.A.); (N.Y.)
| | - Motohiro Ishikawa
- Division of Preventive Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (M.D.); (M.I.); (I.K.); (T.K.)
| | - Ichie Koseki
- Division of Preventive Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (M.D.); (M.I.); (I.K.); (T.K.)
| | - Junichi Sugawara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (J.S.); (T.A.); (N.Y.)
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan;
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (J.S.); (T.A.); (N.Y.)
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (J.S.); (T.A.); (N.Y.)
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Nobuo Yaegashi
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (J.S.); (T.A.); (N.Y.)
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Takeyoshi Koseki
- Division of Preventive Dentistry, Tohoku University Graduate School of Dentistry, Sendai 980-8575, Japan; (M.D.); (M.I.); (I.K.); (T.K.)
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Nakamura M, Tatsuta N, Murata K, Nakai K, Iwata T, Otobe T, Sakamoto M, Yamamoto M, Itatani M, Miura Y, Koriyama C. Neurodevelopmental associations of prenatal and postnatal methylmercury exposure among first-grade children in the Kinan region, Japan. Environ Res 2023; 235:116688. [PMID: 37467938 DOI: 10.1016/j.envres.2023.116688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 07/21/2023]
Abstract
The most severe effects of methylmercury (MeHg) exposure during child development are thought to result from exposure during fetal life and childhood. However, comparing the neurodevelopmental effects of prenatal and postnatal MeHg exposure (PreMeHg and PostMeHg, respectively) remains unclear. We aimed to investigate the associations between neurodevelopmental indicators and PreMeHg or PostMeHg. The participants were 134 children in the first grade of elementary schools aged 7-8 years from the Kinan region, an area with high consumption of MeHg-rich whales and tunas in Japan. We measured MeHg levels in preserved umbilical cord tissues and total mercury (T-Hg) levels in children's hair to estimate PreMeHg and PostMeHg levels, respectively. Neuropsychological (intelligence quotient testing and Boston Naming Test) and neurophysiological (brainstem auditory evoked potential [BAEP], visual evoked potential [VEP], and color vision tests) studies were performed to evaluate the neurodevelopmental status. Multiple regression analyses were conducted according to sex. The geometric mean MeHg levels in preserved umbilical cord tissues and T-Hg levels in children's hair were 0.11 μg/g and 2.94 μg/g, respectively. Neither PreMeHg nor PostMeHg was related to neuropsychological indicators. Some associations between MeHg exposure and neurophysiological results were observed only in boys. N145 latency in VEPs was significantly prolonged with increasing PreMeHg (β: 12.01, 95% confidence interval [CI]: 0.648, 23.38). The III-V interpeak intervals in BAEP were significantly prolonged with increasing PreMeHg or PostMeHg (β [95% CI]: 0.142 [0.041, 0.243] and 0.159 [0.052, 0.265], respectively). After adjusting for PreMeHg, the association between PostMeHg and BAEP latencies disappeared. In conclusion, the latency in the auditory and visual pathways was significantly prolonged with increasing PreMeHg in boys. These findings suggest that male fetuses may be more susceptible to MeHg exposure.
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Affiliation(s)
- Masaaki Nakamura
- Department of Clinical Medicine, National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan.
| | - Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai City, Miyagi, 980-8575, Japan.
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, 1-1 Hondo, Akita City, Akita, 010-8543, Japan.
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai City, Miyagi, 980-8575, Japan.
| | - Toyoto Iwata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, 1-1 Hondo, Akita City, Akita, 010-8543, Japan.
| | - Takayuki Otobe
- Department of Child Education, Jin-ai University, Echizen City, Fukui, 910-0124, Japan.
| | - Mineshi Sakamoto
- Department of Environment and Public Health, National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan.
| | - Megumi Yamamoto
- Department of Environment and Public Health, National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan.
| | - Mina Itatani
- Department of Clinical Medicine, National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan.
| | - Yoko Miura
- Department of Clinical Medicine, National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan.
| | - Chihaya Koriyama
- Department of Epidemiology and Preventive Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima, 890-8544, Japan.
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Sugiyama S, Momma H, Yamada A, Huang C, Tatsuta N, Sakurai K, Nakai K, Arima T, Yaegashi N, Nagatomi R. Social Capital and Physical Activity among Japanese Pregnant Women: Adjunct Study of Japan Environment and Children's Study in Miyagi Prefecture. TOHOKU J EXP MED 2023; 259:307-318. [PMID: 36653161 DOI: 10.1620/tjem.2023.j004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Adequate physical activity during pregnancy is crucial for maternal and fetal health. Although physical activity during pregnancy is restricted, social support and trust may have a favorable influence on physical activity. This study aimed to examine the association between cognitive social capital during pregnancy and prenatal physical activity among Japanese individuals. We also investigated whether social capital has an extended influence during pregnancy on physical activity 1.5 years after delivery. The cognitive social capital of 3,055 pregnant women in their second trimester was measured using nine questions on a self-administered questionnaire. Each cognitive social capital was classified into two or four groups based on their scores. Physical activity during pregnancy was measured using a validated questionnaire in the second trimester and at 1.5 years after delivery. Participants were classified as having adequate physical activity (≥ 150 min/week) or inadequate physical activity (< 150 min/week) based on the physical activity guidelines during pregnancy. After adjusting for confounders, emotional support was positively associated with the prevalence of adequate prenatal physical activity (P for trend = 0.002). Moreover, there was a positive association between emotional support during pregnancy and the prevalence of adequate physical activity 1.5 years after delivery. Among Japanese women, emotional support during pregnancy was associated with a higher prevalence of adequate prenatal physical activity during pregnancy and at 1.5 years after delivery.
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Affiliation(s)
- Shota Sugiyama
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine
| | - Haruki Momma
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine
| | - Aya Yamada
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine
| | - Cong Huang
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine.,Department of Physical Education, Zhejiang University
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine
| | - Kasumi Sakurai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine
| | - Takahiro Arima
- Department of Informative Genetics, Tohoku University Graduate School of Medicine
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine
| | - Ryoichi Nagatomi
- Department of Medicine and Science in Sports and Exercise, Tohoku University Graduate School of Medicine.,Division of Biomedical Engineering for Health and Welfare, Tohoku University Graduate School of Biomedical Engineering
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10
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Anai A, Asato K, Tatsuta N, Sakurai K, Ota C, Kuriyama S, Sugawara J, Arima T, Yaegashi N, Nakai K. Factors associated with postpartum smoking relapse at early postpartum period of Japanese women in the Japan Environmental and Children's Study. Environ Health Prev Med 2023; 28:56. [PMID: 37766542 PMCID: PMC10569968 DOI: 10.1265/ehpm.23-00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 07/28/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND Postpartum smoking relapse is a serious public health concern. Previous studies have identified several risk factors for postpartum smoking relapse; however, very little is known about the predictors of early postpartum smoking relapse. This study aimed to determine postpartum smoking relapse status and its associated risk factors at 1 month postpartum among Japanese women. METHODS Data were obtained from 93,851 mothers with live births in an ongoing birth cohort study, the Japan Environment and Children's Study. Data on smoking status and confounding variables were collected using self-administered questionnaires and medical record transcripts. Self-administered questionnaires were administered during the first trimester, second/third trimester, and 1 month after delivery. A multiple logistic regression analysis was performed. RESULTS Among the 14,326 mothers who smoked during pregnancy, 10,917 (76.2%) quit smoking during pregnancy. Subsequently, 617 (5.7%) of the mothers who had quit relapsed smoking at 1 month postpartum. Maternal age (≤24, ≥35), maternal education (≤12 years), parity (≥Second), feeding method (Formula milk), partner smoking status during pregnancy (Smoker), number of cigarettes per day before the cessation of smoking (≥11), maternal alcohol consumption at 1-month postpartum (Drinker), postpartum depression (EPDS score ≥9), and spending time at the parents' home after delivery (≥14 days) were associated with smoking relapse. CONCLUSIONS A certain number of mothers relapsed even 1 month postpartum. Besides mother's alcohol and smoking habit before pregnancy, breastfeeding and partner smoking are important factors in early postpartum smoking relapse in Japan.
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Affiliation(s)
- Akane Anai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Institute for Asian and Oceanian Studies, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan
| | - Kaname Asato
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kasumi Sakurai
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Chiharu Ota
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Shinichi Kuriyama
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Junichi Sugawara
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takahiro Arima
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Nobuo Yaegashi
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- School of Sport and Health Science, Tokai Gakuen University, 21-233 Nishinohora, Ukigai-cho, Miyoshi, Aichi 470-0207, Japan
| | - The Japan Environment and Children’s Study Group
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Environmental and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
- Institute for Asian and Oceanian Studies, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, Fukuoka 819-0395, Japan
- School of Sport and Health Science, Tokai Gakuen University, 21-233 Nishinohora, Ukigai-cho, Miyoshi, Aichi 470-0207, Japan
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Tatsuta N, Iwai-Shimada M, Nakayama SF, Iwama N, Metoki H, Arima T, Sakurai K, Anai A, Asato K, Kuriyama S, Sugawara J, Suzuki K, Yaegashi N, Kamijima M, Nakai K. Association between whole blood metallic elements concentrations and gestational diabetes mellitus in Japanese women: The Japan environment and Children's study. Environ Res 2022; 212:113231. [PMID: 35405127 DOI: 10.1016/j.envres.2022.113231] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 03/24/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
BACKGROUND Exposure to several metallic elements has been suggested as a risk factor for gestational diabetes mellitus (GDM), but inconsistent findings have been reported. This study aimed to examine the association between the maternal whole blood concentration of metallic elements (Hg, Pb, Cd, Mn, and Se) and GDM using the dataset of the Japan Environment and Children's Study (JECS), a nationwide birth cohort study, which was designed to examine the adverse effects of pre/post-natal exposure to hazardous environment. METHODS The data of 78,964 pregnant women who were participants of JECS were used. Blood samples were collected from the pregnant women at second/third trimester of gestation. We employed logistic regression analysis, quantile g-computation (QGC) and a distributed lag nonlinear model (DLNM) to examine the association between the blood concentration of metallic elements and the risk of GDM. RESULTS The prevalence of GDM was 2.1%. In the logistic regression analyses, maternal blood Hg was associated with an increased risk of GDM. In QGC analysis, although metallic elements mixtures were not related to an increased risk of GDM, Hg (52.6%) may be the main contributor. According to the results of DLNM, for maternal exposure to Hg, 4.99 ng/g was identified as its susceptible minimum window for elevated risk of GDM. CONCLUSIONS Our findings highlighted an association between Hg exposure and an increased risk of GDM. Studies of the underlying mechanisms and potential contributing factors, including fish intake, of this association are warranted.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Miyuki Iwai-Shimada
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki, 305-8506, Japan
| | - Noriyuki Iwama
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Division of Molecular Epidemiology, Department of Preventive Medicine and Epidemiology, Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Hirohito Metoki
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Takahiro Arima
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kasumi Sakurai
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Akane Anai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kaname Asato
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Shinichi Kuriyama
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Junichi Sugawara
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kichiya Suzuki
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Nobuo Yaegashi
- Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya, Aichi, 467-8601, Japan.
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; Environmental and Genome Research Center Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan; School of Sport and Health Science, Tokai Gakuen University, 21-233 Nishinodo, Ukigai-cho, Miyoshi, Aichi, 470-233, Japan.
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Yokoyama E, Takeda T, Watanabe Z, Iwama N, Satoh M, Murakami T, Sakurai K, Shiga N, Tatsuta N, Saito M, Tachibana M, Arima T, Kuriyama S, Metoki H, Yaegashi N. Association of fish intake with menstrual pain: A cross-sectional study of the Japan Environment and Children’s Study. PLoS One 2022; 17:e0269042. [PMID: 35862448 PMCID: PMC9302766 DOI: 10.1371/journal.pone.0269042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Accepted: 05/13/2022] [Indexed: 11/18/2022] Open
Abstract
The relationship between fish eating habits and menstrual pain is unknown. Elucidating this relationship can inform dietary guidance for reproductive age women with menstrual pain. The aim of this study was to clarify the relationship between fish intake frequency/preference and menstrual pain. This cross-sectional study was conducted at the Miyagi Regional Center as an adjunct study of the Japan Environment and Children’s Study, and 2060 eligible women (mean age, 31.9 years) participated. Fish intake frequency (“< 1 time/week,” “1 time/week,” “2–3 times/week,” or “≥ 4 times/week”), preference (“like,” “neutral,” or “dislike”), and menstrual pain (no/mild or moderate-to-severe) were assessed at 1.5 years after the last delivery through self-administered questionnaires. The association between fish intake frequency/preference and prevalence of moderate-to-severe menstrual pain was evaluated through logistic regression analyses. Our results show that, compared with the “< 1 time/week” (38.0%) group, the “1 time/week” (26.9%), “2–3 times/week” (27.8%), and “≥ 4 times/week” (23.9%) groups showed a lower prevalence of moderate-to-severe menstrual pain (p < 0.01). The prevalence of moderate-to-severe menstrual pain was 27.7%, 27.6%, and 34.4% in the “like,” “neutral,” and “dislike” groups, respectively. Multivariate logistic regression showed that frequent fish intake was associated with a lower prevalence of moderate-to-severe menstrual pain (“1 time/week”: odds ratio [OR] = 0.59; 95% confidence interval [CI], 0.41–0.86, “2–3 times/week”: OR = 0.64; 95% CI, 0.45–0.90 and “≥ 4 times/week”: OR = 0.52; 95% CI, 0.34–0.80; trend p = 0.004). Multivariate logistic regression showed no association between fish preference and moderate-to-severe menstrual pain (“dislike” vs “like”: OR = 1.16; 95% CI, 0.78–1.73). There was a significant negative association between fish intake frequency and menstrual pain. It is suggested that fish intake can reduce or prevent menstrual pain.
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Affiliation(s)
- Emi Yokoyama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Takashi Takeda
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Division of Women’s Health, Research Institute of Traditional Asian Medicine, Kindai University, Osaka-Sayama, Osaka, Japan
- * E-mail:
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Michihiro Satoh
- Division of Public Health, Hygiene and epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine, Sendai, Miyagi, Japan
| | - Takahisa Murakami
- Division of Public Health, Hygiene and epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine, Sendai, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Naomi Shiga
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Department of Maternal and Fetal Therapeutics, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masahito Tachibana
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shinichi Kuriyama
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Hirohito Metoki
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Division of Public Health, Hygiene and epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine, Sendai, Miyagi, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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13
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Tatsuta N, Nakai K, Nakayama SF, Takeuchi A, Arima T, Yaegashi N, Kamijima M, Yamazaki S, Ohya Y, Kishi R, Hashimoto K, Mori C, Ito S, Yamagata Z, Inadera H, Nakayama T, Iso H, Shima M, Kurozawa Y, Suganuma N, Kusuhara K, Katoh T. Corrigendum to "Effects of maternal exposure to lead on secondary sex ratio in Japan: The Japan Environment and Children's Study" [Sci. Total Environ. 817 (2022) 152726]. Sci Total Environ 2022; 829:154714. [PMID: 35350089 DOI: 10.1016/j.scitotenv.2022.154714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Shoji F Nakayama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Ayano Takeuchi
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Takahiro Arima
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Nobuo Yaegashi
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan.
| | - Shin Yamazaki
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Yukihiro Ohya
- National Center for Child Health and Development, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | | | | - Koichi Kusuhara
- University of Occupational and Environmental Health, Kitakyushu, Japan
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Niwa S, Kawabata T, Shoji K, Ogata H, Kagawa Y, Nakayama K, Yanagisawa Y, Iwamoto S, Tatsuta N, Asato K, Arima T, Yaegashi N, Nakai K. Investigation of Maternal Diet and FADS1 Polymorphism Associated with Long-Chain Polyunsaturated Fatty Acid Compositions in Human Milk. Nutrients 2022; 14:nu14102160. [PMID: 35631303 PMCID: PMC9143760 DOI: 10.3390/nu14102160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/20/2022] [Accepted: 05/20/2022] [Indexed: 11/21/2022] Open
Abstract
Increasing the amount of long-chain polyunsaturated fatty acids (LCPUFA) in human milk is an important strategy for infant growth and development. We investigated the associations of LCPUFA compositions in human milk with maternal diet (especially fish and shellfish intake), with fatty acid Δ5 desaturase gene (FADS1) polymorphisms, and with gene-diet interactions. The present study was performed as part of an adjunct study of the Japan Environment and Children’s Study. The participants were 304 lactating females, who provided human milk 6−7 months after delivery. Fatty acids in human milk were analyzed by gas chromatography, and dietary surveys were conducted using a brief self-administered diet history questionnaire. We also analyzed a single nucleotide polymorphism of FADS1 (rs174547, T/C). There was a significant difference in arachidonic acid (ARA) composition in human milk among the genotype groups, and the values were decreasing in the order of TT > TC > CC. The concentrations of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) were also different between TT and CC genotype, indicating a tendency for decreasing values in the same order. The composition of ARA showed significant gene−dietary interactions in multiple regression analysis, and the positive correlation between fish and shellfish intake and ARA composition in human milk was significant only in the CC genotype. Moreover, the factor most strongly associated with EPA and DHA composition in human milk was fish and shellfish intake. Therefore, it was suggested that increasing fish and shellfish intake in mothers may increase EPA and DHA composition in human milk, while increasing fish and shellfish intake in CC genotype mothers may lead to increased ARA composition in human milk.
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Affiliation(s)
- Sakurako Niwa
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado 350-0288, Saitama, Japan; (T.K.); (K.S.); (H.O.); (Y.K.)
- Faculty of Home Economics, Gifu Women’s University, 80 Taromaru, Gifu City 501-2592, Gifu, Japan
- Correspondence: ; Tel.: +81-49-282-3705
| | - Terue Kawabata
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado 350-0288, Saitama, Japan; (T.K.); (K.S.); (H.O.); (Y.K.)
| | - Kumiko Shoji
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado 350-0288, Saitama, Japan; (T.K.); (K.S.); (H.O.); (Y.K.)
| | - Hiromitsu Ogata
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado 350-0288, Saitama, Japan; (T.K.); (K.S.); (H.O.); (Y.K.)
| | - Yasuo Kagawa
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado 350-0288, Saitama, Japan; (T.K.); (K.S.); (H.O.); (Y.K.)
| | - Kazuhiro Nakayama
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa 277-8562, Chiba, Japan;
| | - Yoshiko Yanagisawa
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (Y.Y.); (S.I.)
| | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke 329-0498, Tochigi, Japan; (Y.Y.); (S.I.)
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai 980-8575, Miyagi, Japan; (N.T.); (K.A.); (K.N.)
| | - Kaname Asato
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai 980-8575, Miyagi, Japan; (N.T.); (K.A.); (K.N.)
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai 980-8575, Miyagi, Japan; (T.A.); (N.Y.)
| | - Nobuo Yaegashi
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai 980-8575, Miyagi, Japan; (T.A.); (N.Y.)
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Sendai 980-8575, Miyagi, Japan; (N.T.); (K.A.); (K.N.)
- School of Sport and Health Science, Tokai Gakuen University, Nishinohora 21-233, Miyoshi 470-0207, Aichi, Japan
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15
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Sakamoto M, Haraguchi K, Tatsuta N, Marumoto M, Yamamoto M, Nakamura M. Breast milk contribution to tissue mercury levels in rat pups examined by cross-fostering at birth. Environ Res 2022; 208:112772. [PMID: 35063428 DOI: 10.1016/j.envres.2022.112772] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/13/2022] [Accepted: 01/13/2022] [Indexed: 06/14/2023]
Abstract
The developing perinatal brain is vulnerable to methylmercury (MeHg) exposure. The contribution of breast milk to tissue MeHg levels in offspring is a significant public health concern because breast milk contains a certain amount of MeHg. Here, the contribution of MeHg transferred via breast milk to the Hg levels in the tissues of pups (Wistar rats) was investigated. Mated maternal rats were fed a MeHg (2 ppm)-supplemented or a control diet during pregnancy. Following parturition, male neonates from each group were cross-fostered between exposed or control dams, and they were further raised by dams fed a MeHg-supplemented diet or a control diet during lactation. Consequently, we evaluated three pup groups, which were raised by dams exposed to MeHg during pregnancy (P pups), lactation (L pups), or pregnancy and lactation (PL pups). Total mercury (THg) concentrations in the tissues of the offspring were measured at birth (postnatal day 0 [PD0]), during lactation (PD6, PD12, and PD19), and after weaning (PD29 and PD36). Blood and brain THg levels in the P and PL pups declined dramatically during lactation, however, there were no considerable differences between the two groups at PD6 and PD12. In contrast, blood and brain THg levels in the L pups increased slightly during lactation. The increase in the THg levels in the blood and brain of L pups at PD12 were approximately 3.3% and 1.5%, respectively, compared to the corresponding THg levels in the neonates in the P and PL groups. Our results suggest that if the MeHg exposure level during pregnancy is not high enough to cause neuronal development defects in the fetus, the exposure via breast milk is not a significant concern.
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Affiliation(s)
- Mineshi Sakamoto
- National Institute for Minamata Disease, Minamata, Kumamoto, 867-0008, Japan.
| | - Koichi Haraguchi
- National Institute for Minamata Disease, Minamata, Kumamoto, 867-0008, Japan
| | - Nozomi Tatsuta
- Tohoku University School of Medicine, Sendai, 880-2112, Japan
| | - Masumi Marumoto
- National Institute for Minamata Disease, Minamata, Kumamoto, 867-0008, Japan
| | - Megumi Yamamoto
- National Institute for Minamata Disease, Minamata, Kumamoto, 867-0008, Japan
| | - Masaaki Nakamura
- National Institute for Minamata Disease, Minamata, Kumamoto, 867-0008, Japan
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16
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Tatsuta N, Nakai K, Nakayama SF, Takeuchi A, Arima T, Yaegashi N, Kamijima M, Yamazaki S, Ohya Y, Kishi R, Hashimoto K, Mori C, Ito S, Yamagata Z, Inadera H, Nakayama T, Iso H, Shima M, Kurozawa Y, Suganuma N, Kusuhara K, Katoh T. Effects of maternal exposure to lead on secondary sex ratio in Japan: The Japan Environment and Children's Study. Sci Total Environ 2022; 817:152726. [PMID: 34995582 DOI: 10.1016/j.scitotenv.2021.152726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 12/01/2021] [Accepted: 12/23/2021] [Indexed: 06/14/2023]
Abstract
A decline in the proportion of male births (secondary sex ratio, SSR) has been seen in several countries including Japan in recent years. Although previous studies have reported that the SSR is affected by exposure to chemical substances such as dioxins and polychlorinated biphenyls, as well as heavy metals such as methylmercury, the effects of lead exposure on the SSR have been little studied. The aim of this study was to determine the association between maternal lead exposure and SSR. In a large-scale nationwide birth cohort study, maternal blood lead level (BLL) was determined using whole blood from the second or third trimester of pregnancy. The association between SSR and maternal BLL was estimated using multivariable logistic models. Binomial distribution was applied to examine the differences in SSR by dividing the participants into five groups based on BLL. The primary outcome was SSR, and the child sex was obtained from the medical record transcripts. Of 104,062 fetal records, 85,171 were examined for analysis. The median maternal BLL was 5.85 ng/g (5th-95th percentile 3.45-10.6 ng/g). The overall proportion of males among participating infants was 0.512. In logistic regression models adjusted for covariates, the analysis revealed an increased odds ratio for SSR with higher blood lead concentrations [Group 2: adjusted OR 1.082, 95% confidence interval 1.037 to 1.129, Group 3: 1.122, 1.074 to 1.171, Group 4: 1.214, 1.163 to 1.268, Group 5: 1.279, 1.224 to 1.336]. Compared to the general birth probability in Japan, the group with low BLL had a lower SSR and the group with high BLL had a higher SSR. Higher maternal lead exposures during pregnancy were associated with increased SSR. Further investigations including assessment of paternal lead exposure are necessary to understand the association between lead exposure and SSR.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Shoji F Nakayama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Ayano Takeuchi
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Takahiro Arima
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Nobuo Yaegashi
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan.
| | - Shin Yamazaki
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Yukihiro Ohya
- National Center for Child Health and Development, Tokyo, Japan
| | | | | | | | | | | | | | | | | | | | | | | | - Koichi Kusuhara
- University of Occupational and Environmental Health, Kitakyushu, Japan
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Iwai K, Iwai-Shimada M, Asato K, Nakai K, Kobayashi Y, Nakayama SF, Tatsuta N. Intra- and Inter-Day Element Variability in Human Breast Milk: Pilot Study. Toxics 2022; 10:toxics10030109. [PMID: 35324734 PMCID: PMC8951413 DOI: 10.3390/toxics10030109] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 02/14/2022] [Accepted: 02/19/2022] [Indexed: 12/10/2022]
Abstract
For infants in the first months of life, breast milk is a complete source of nutrition; however, it can also contain elements that are harmful to the infant. It is therefore critical for infant health to characterize breast milk. The aim of this study was to determine the intra- and inter-day variation of elements in breast milk, for which there is currently limited information, as a pilot study for a larger study. Firstly, we developed a simple and robust analytical method for the determination of multiple elements in breast milk. It was accurate (accuracy ranged from 98% to 107%) for measurement of 26 elements in breast milk by quadrupole inductively coupled plasma-mass spectrometry. Intra- and inter-day variation of elements, protein, and fat in breast milk was determined by analyzing breast milk collected from 11 women at 12 sampling points over three days and calculating intraclass correlation coefficients. Intraclass correlation coefficients showed that while some elements were consistent across time points (e.g., Sr, Ca, and Cu), others showed very high variability (e.g., As, Cd, and Ni). Correlation analyses between elements in breast milk showed strong relationships between those including Fe and Mo, Ca and Sr, and Cd and Fe.
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Affiliation(s)
- Kenta Iwai
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
| | - Miyuki Iwai-Shimada
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
| | - Kaname Asato
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (K.A.); (K.N.)
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (K.A.); (K.N.)
| | - Yayoi Kobayashi
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
| | - Shoji F. Nakayama
- Health and Environmental Risk Division, National Institute for Environmental Studies, Tsukuba 305-8506, Japan; (K.I.); (M.I.-S.); (Y.K.)
- Correspondence: (S.F.N.); (N.T.)
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan; (K.A.); (K.N.)
- Correspondence: (S.F.N.); (N.T.)
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Nishigori T, Obara T, Metoki H, Sakurai K, Mori M, Suzuki T, Ishikuro M, Tatsuta N, Saito M, Sugawara J, Arima T, Nakai K, Kuriyama S, Yaegashi N, Nishigori H. Validation of the Mother-to-Infant Bonding Scale for Infant Maltreatment by Mothers at One Month Postpartum: An Adjunct Study of the Japan Environment and Children' s Study. JMA J 2022; 5:366-369. [PMID: 35992292 PMCID: PMC9358263 DOI: 10.31662/jmaj.2022-0041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2022] [Accepted: 04/06/2022] [Indexed: 11/09/2022] Open
Affiliation(s)
- Toshie Nishigori
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Miyagi, Japan
| | - Taku Obara
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Miyagi, Japan
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Miyuki Mori
- Department of Development and Environmental Medicine, Fukushima Medical Center for Children and Women, Fukushima Medical University Graduate School of Medicine, Fukushima, Japan
| | - Taeko Suzuki
- Department of Development and Environmental Medicine, Fukushima Medical Center for Children and Women, Fukushima Medical University Graduate School of Medicine, Fukushima, Japan
| | - Mami Ishikuro
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Junichi Sugawara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
- Department of Sport and Health Science, Tokai Gakuen University, Aichi, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
- International Research Institute for Disaster Science, Tohoku University, Miyagi, Japan
| | - Nobuo Yaegashi
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Hidekazu Nishigori
- Department of Development and Environmental Medicine, Fukushima Medical Center for Children and Women, Fukushima Medical University Graduate School of Medicine, Fukushima, Japan
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Nishigori H, Obara T, Nishigori T, Ishikuro M, Tatsuta N, Sakurai K, Saito M, Sugawara J, Arima T, Nakai K, Mano N, Metoki H, Kuriyama S, Yaegashi N. Prenatal folic acid supplementation and autism spectrum disorder in 3-year-old offspring: the Japan environment and children's study. J Matern Fetal Neonatal Med 2021; 35:8919-8928. [PMID: 34856862 DOI: 10.1080/14767058.2021.2007238] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
OBJECTIVE We evaluated the relationship between prenatal folic acid supplementation and autism spectrum disorder (ASD) in 3-year-old offspring. METHODS We used data from the Japan Environment and Children's Study, a nationwide prospective birth cohort study. We analyzed the data to determine the association between folic acid supplement use and the incidence of ASD in offspring, and classified participants into three groups based on the time of initiation of folic acid supplementation, as follows: (1) preconception users of folic acid supplements and (2) post-conception users, and (3) non-users. The dietary folate intake of study participants was also classified into three groups (<200 µg, 200 µg to <400 µg, ≥400 µg). RESULTS Overall, 361 offspring of 96,931 participants with single pregnancies were diagnosed with ASD (0.37%). A total of 7,046 participants (7.3%) used folic acid supplements before conception, 29,984 (30.9%) took them after detection of pregnancy, and 59,901 (61.8%) never received them. Multivariate logistic regression analyses demonstrated no association between prenatal folic acid supplementation and ASD in offspring (preconception use: adjusted odds ratio [AOR], 1.189; 95% confidence interval [CI], 0.819-1.727 and post-conception use: AOR, 1.072; 95% CI, 0.840-1.368); additionally, no association was observed with the use of folic acid supplements and/or multivitamin supplements (preconception use: AOR, 1.273; 95% CI, 0.921-1.760 and post-conception use: AOR, 1.132; 95% CI, 0.885-1.449). Moreover, no significant association was observed in participants with combined prenatal supplement use and dietary folate intake. CONCLUSIONS Maternal use of folic acid supplements from the pre- or post-conception period was not significantly associated with ASD in 3-year-old offspring in Japan. Evaluation of the dietary folate intake from preconception also showed no significant association.
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Affiliation(s)
- Hidekazu Nishigori
- Department of Development and Environmental Medicine, Fukushima Medical Center for Children and Women, Fukushima Medical University Graduate School of Medicine, Fukushima, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Taku Obara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan.,Department of Pharmaceutical Sciences, Tohoku University Hospital, Miyagi, Japan
| | - Toshie Nishigori
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Miyagi, Japan
| | - Mami Ishikuro
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Junichi Sugawara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Nariyasu Mano
- Department of Pharmaceutical Sciences, Tohoku University Hospital, Miyagi, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Miyagi, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan.,International Research Institute for Disaster Science, Tohoku University, Miyagi, Japan
| | - Nobuo Yaegashi
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
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20
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Tanoue K, Nishigori H, Watanabe Z, Tanaka K, Sakurai K, Mizuno S, Ishikuro M, Obara T, Tachibana M, Hoshiai T, Saito M, Sugawara J, Tatsuta N, Fujiwara I, Kuriyama S, Arima T, Nakai K, Yaegashi N, Metoki H. Interannual Changes in the Prevalence of Intimate Partner Violence Against Pregnant Women in Miyagi Prefecture After the Great East Japan Earthquake: The Japan Environment and Children's Study. J Interpers Violence 2021; 36:10013-10028. [PMID: 31617446 DOI: 10.1177/0886260519881517] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
This study aimed to clarify the interannual changes in intimate partner violence against pregnant women after the March 11, 2011 Great East Japan Earthquake in target areas of Miyagi Prefecture that were damaged by the earthquake and tsunami. Because of this disaster, in Miyagi Prefecture, approximately 12,000 people died or went missing, and approximately 238,000 buildings were destroyed. According to the U.S. Geological Survey, the Great East Japan Earthquake is the fourth largest earthquake in the world and the largest in Japan since 1900. The present study was part of the Japan Environment and Children's Study. Data from June 2011 to May 2014 of 79,222 pregnant women were analyzed, calculating the prevalence of physical and mental intimate partner violence in the inland, north coastal, and south coastal areas of Miyagi. These prevalence rates were compared with nationwide rates of intimate partner violence in 2011 using univariate and logistic regression analyses. After the disaster, the incidence of mental intimate partner violence increased in the south coastal area and then improved later (19.4%, 13.1%, and 13.3% for south coastal area, and 13.8%, 13.8%, and 13.1% for nationwide in 2011, 2012, and 2013, respectively). However, in the north coastal area, the incidence of physical intimate partner violence increased after the disaster and then improved later (2.7%, 1.5%, and 1.3% for north coastal area, and 1.4%, 1.3%, and 1.1% for nationwide in 2011, 2012, and 2013, respectively). In the inland area, however, the prevalence of both mental and physical intimate partner violence was consistently higher than nationwide rates after the disaster.
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Affiliation(s)
| | | | | | | | | | - Satoshi Mizuno
- Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | | | | | | | | | | | | | | | | | | | | | | | | | - Hirohito Metoki
- Tohoku University, Sendai, Japan
- Tohoku Medical and Pharmaceutical University, Sendai, Japan
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21
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Ma C, Iwai-Shimada M, Nakayama SF, Isobe T, Kobayashi Y, Tatsuta N, Taniguchi Y, Sekiyama M, Michikawa T, Yamazaki S, Kamijima M. Association of prenatal exposure to cadmium with neurodevelopment in children at 2 years of age: The Japan Environment and Children's Study. Environ Int 2021; 156:106762. [PMID: 34256298 DOI: 10.1016/j.envint.2021.106762] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 06/16/2021] [Accepted: 07/05/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Prenatal cadmium exposure has been associated with adverse neurodevelopmental outcomes. However, previous findings are contradictory, and little is known about the potential modifiers of the cadmium-related neurodevelopmental risk. We investigated the associations between prenatal cadmium exposure and neurodevelopment in 2-year-old children and examined the influence of mother/child characteristics. METHODS We recruited 3545 mother-child pairs from the Japan Environment and Children's Study. We collected maternal blood during mid/late pregnancy and cord blood at delivery, and measured cadmium concentrations using inductively coupled plasma mass spectrometry. Neurodevelopment was assessed using the Kyoto Scale of Psychological Development (KSPD), which includes cognitive-adaptive (C-A), language-social (L-S), postural-motor (P-M) and developmental quotient (DQ) domains. Associations between cadmium and KSPD scores were tested using multivariable models after controlling for confounders. RESULTS Median levels (interquartile ranges) of cadmium in maternal and cord blood were 0.70 (0.52-0.95) and 0.04 (0.03-0.06) μg/L, respectively. Maternal blood cadmium concentrations were inversely associated with P-M scores in boys (β = -1.4, 95% confidence interval (CI): -2.7, -0.038), DQ in children of mothers who smoked during pregnancy (β = -2.9, 95% CI: -5.7, -0.12), P-M (β = -5.4, 95% CI: -10, -0.67), C-A (β = -6.1, 95% CI: -11, -1.8), L-S (β = -9.0, 95% CI: -13, -4.8) and DQ scores (β = -6.4, 95% CI: -9.6, -3.1) in children born to mothers with gestational diabetes. Cord blood cadmium concentrations were negatively associated with L-S scores (β = -6.0., 95% CI: -11, -0.91) in children born to mothers with gestational diabetes. CONCLUSIONS Prenatal cadmium exposure was negatively associated with neurodevelopment in boys, in children whose mothers smoked, and in children born to mothers with gestational diabetes. Further studies in other populations are needed to confirm our findings.
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Affiliation(s)
- Chaochen Ma
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Miyuki Iwai-Shimada
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Shoji F Nakayama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan.
| | - Tomohiko Isobe
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Yayoi Kobayashi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi 980-8575, Japan
| | - Yu Taniguchi
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Makiko Sekiyama
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Takehiro Michikawa
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan; Department of Environmental and Occupational Health, School of Medicine, Toho University, Tokyo 143-8540, Japan
| | - Shin Yamazaki
- Japan Environment and Children's Study Programme Office, National Institute for Environmental Studies, 16-2 Onogawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya 467-8601, Japan.
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22
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Yaginuma-Sakurai K, Saito C, Kasahara Y, Tsuno K, Yoshimasu K, Tatsuta N, Goto M, Nakai K. A cross-sectional study of the association between effort-reward imbalance and psychologic distress among Japanese dietitians. J Occup Health 2021; 63:e12285. [PMID: 34687118 PMCID: PMC8535437 DOI: 10.1002/1348-9585.12285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/06/2021] [Accepted: 10/03/2021] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVES This study aims to clarify dietitians' effort-reward imbalance (ERI) and examine its association with psychologic distress. METHODS A cross-sectional survey was conducted. A total of 3593 questionnaires were distributed to dietitians in about 110 organizations and 1890 responses were received (response rate 52.6%). Hence, a total of 1743 valid questionnaires were used in the analysis. Effort-reward (ER) ratio was measured by a subscale of the ERI Questionnaire, and psychologic distress was measured by the Kessler Psychological Distress Scale (K6). The association between the ER ratio and psychologic distress was analyzed by multiple logistic regression analysis with covariates. RESULTS The mean ER ratio was 0.83 (SD = 0.53) and ERI (ER ratio >1) prevalence was 26.3%. The mean K6 score was 7.1 (5.3), and psychologic distress (K6 score ≥5) prevalence was 62.4%. The increased psychologic distress was associated with a higher ER ratio, less support from supervisors and coworkers, and lower age and household income. ERI was significantly associated with psychologic distress, even after being adjusted for covariates. CONCLUSIONS Dietitians experience high stress, as shown by their high ER ratio and K6 scores. Their ERI was greatly associated with psychologic distress.
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Affiliation(s)
- Kozue Yaginuma-Sakurai
- Department of Human Health and Nutrition, College of Human Health and Nutrition, Shokei Gakuin University, Natori, Miyagi, Japan.,Graduate School of Comprehensive Human Sciences, Master's Course in Nutritional Science, Shokei Gakuin University, Natori, Miyagi, Japan
| | - Chotoku Saito
- Department of Nutrition, Faculty of Health Science, Aomori University of Health and Welfare, Aomori, Aomori, Japan
| | - Yoshiko Kasahara
- Department of Food and Health Sciences, Faculty of Health and Human Development, The University of Nagano, Nagano, Nagano, Japan
| | - Kanami Tsuno
- School of Health Innovation, Kanagawa University of Human Services, Kawasaki, Kanagawa, Japan
| | - Kouichi Yoshimasu
- Department of Psychological and Behavioral Sciences, School of Human Sciences, Kobe College, Nishinomiya, Hyogo, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Miki Goto
- Graduate School of Comprehensive Human Sciences, Master's Course in Nutritional Science, Shokei Gakuin University, Natori, Miyagi, Japan
| | - Kunihiko Nakai
- School of Sport and Health Science, Tokai Gakuen University, Miyoshi, Aichi, Japan
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23
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Sakamoto M, Haraguchi K, Tatsuta N, Nakai K, Nakamura M, Murata K. Plasma and red blood cells distribution of total mercury, inorganic mercury, and selenium in maternal and cord blood from a group of Japanese women. Environ Res 2021; 196:110896. [PMID: 33640495 DOI: 10.1016/j.envres.2021.110896] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/20/2021] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
Fetuses are a high-risk group for methylmercury (MeHg) exposure. The main objective of this study was to compare the characteristic profiles of total mercury (THg), inorganic mercury (IHg), MeHg, and selenium in plasma and red blood cells (RBCs) between maternal and cord blood at parturition collected from a group of Japanese women. Furthermore, correlations of THg in RBCs, which is a biomarker of MeHg, and THg in plasma, which is an IHg exposure biomarker, were examined in maternal and cord blood. Fifty-five pairs of maternal and cord blood samples obtained at parturition were collected from pregnant women in Fukuoka, Japan. THg in RBCs and plasma were significant correlated between maternal and cord blood. THg in RBCs was 13.9 ng/mL for cord and 9.16 ng/mL for maternal blood, with a cord:maternal RBCs ratio for THg of 1.58, suggesting that MeHg is actively transferred from the mother to the fetus via the placenta. THg in plasma showed a positive correlation with THg in RBCs for maternal and cord blood. This result suggests that measuring THg in plasma can overestimate the exposure level to IHg in fish-eating populations. The percentages of IHg in cord plasma and RBCs were 31% and 1.7%, respectively, and those in maternal plasma and RBCs were 46% and 5.9%, respectively. These results suggest that cord blood is rich in MeHg and can easily transfer to the fetal brain. Selenium in cord plasma was 67 ng/mL and that in maternal plasma was 97 ng/mL, with a cord:maternal plasma ratio for Se of 0.69, suggesting that the protective effects of Se against MeHg toxicity in fetuses may be weaker than those expected in adult mothers.
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Affiliation(s)
- Mineshi Sakamoto
- National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan.
| | - Koichi Haraguchi
- National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan
| | - Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, 980-8575, Japan
| | - Masaaki Nakamura
- National Institute for Minamata Disease, 4058-18 Hama, Minamata City, Kumamoto, 867-0008, Japan
| | - Katsuyuki Murata
- Department of Environment and Public Health, Akita University School Graduate School of Medicine, 1-1 Hondo, Akita, 010-8543, Japan
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24
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Tanoue K, Watanabe Z, Nishigori H, Iwama N, Satoh M, Murakami T, Tanaka K, Sasaki S, Sakurai K, Ishikuro M, Obara T, Saito M, Sugawara J, Tatsuta N, Kuriyama S, Arima T, Nakai K, Yaegashi N, Metoki H. The prevalence of psychological distress during pregnancy in Miyagi Prefecture for 3 years after the Great Eas t Japan Earthquake. Environ Health Prev Med 2021; 26:27. [PMID: 33637036 PMCID: PMC7913250 DOI: 10.1186/s12199-021-00944-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Accepted: 02/03/2021] [Indexed: 11/10/2022] Open
Abstract
Background To examine changes in psychological distress prevalence among pregnant women in Miyagi Prefecture, which was directly affected by the Great East Japan Earthquake and tsunami, and compare it with the other, less damaged areas of Japan. Methods This study was conducted in conjunction with the Japan Environment and Children`s Study. We examined 76,152 pregnant women including 8270 in Miyagi Regional Center and 67,882 in 13 other regional centers from the all-birth fixed data of the Japan Environment and Children’s Study. We then compared the prevalence and risk of distress in women in Miyagi Regional Center and women in the 13 regional centers for 3 years after the disaster. Results Women in the Miyagi Regional Center suffered more psychological distress than those in the 13 regional centers: OR 1.38 (95% CI, 1.03–1.87) to 1.92 (95% CI, 1.42–2.60). Additionally, women in the inland area had a consistently higher prevalence of psychological distress compared to those from the 13 regional centers: OR 1.67 (95% CI, 1.18–2.38) to 2.19 (95% CI, 1.60–2.99). Conclusions The lack of pre-disaster data in the Japan Environment and Children’s Study made it impossible to compare the incidence of psychological distress before and after the March 2011 Great East Japan Earthquake. However, 3 years after the Great East Japan Earthquake, the prevalence of pregnant women with psychological distress did not improve in Miyagi Regional Center. Further, the prevalence of mental illness in inland areas was consistently higher than that in the 13 regional centers after the disaster.
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Affiliation(s)
- Kaou Tanoue
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Hidekazu Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.,Fukushima Medical Center for Children and Women, Fukushima Medical University, 1 Hikariga-oka, Fukushima, 960-1295, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Michihiro Satoh
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, 1-15-1 Fukumuro, Sendai, Miyagi, 983-8536, Japan
| | - Takahisa Murakami
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, 1-15-1 Fukumuro, Sendai, Miyagi, 983-8536, Japan
| | - Kousuke Tanaka
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan.,Department of Obstetrics and Gynecology, Hachinohe City Hospital, 3-1-1, Tamukai, Hachinohe, Aomori, 031-8555, Japan
| | - Satomi Sasaki
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Mami Ishikuro
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.,Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Taku Obara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.,Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.,Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Junichi Sugawara
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.,Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.,Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan
| | - Hirohito Metoki
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan. .,Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, 1-15-1 Fukumuro, Sendai, Miyagi, 983-8536, Japan. .,Tohoku Medical Megabank Organization, Tohoku University, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8573, Japan.
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25
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Matsumoto A, Kawabata T, Kagawa Y, Shoji K, Kimura F, Miyazawa T, Tatsuta N, Arima T, Yaegashi N, Nakai K. Associations of umbilical cord fatty acid profiles and desaturase enzyme indices with birth weight for gestational age in Japanese infants. Prostaglandins Leukot Essent Fatty Acids 2021; 165:102233. [PMID: 33387849 DOI: 10.1016/j.plefa.2020.102233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 12/03/2020] [Accepted: 12/15/2020] [Indexed: 10/22/2022]
Abstract
Long-chain polyunsaturated fatty acids (LCPUFAs) required for infant development are produced by Δ6 desaturase (D6D) and Δ5 desaturase (D5D). The D6D index and D5D index are calculated based on their respective precursor/product ratios. The D5D and D6D indices are related to obesity and lifestyle-related diseases. The aim of the present study was to examine the associations of umbilical cord fatty acid profiles, D6D index, and D5D index in appropriate for gestational age (AGA), small for gestational age (SGA), and large for gestational age (LGA) infants. This was a nested case-control study, and the relationship between case and control maternal blood and umbilical cord blood fatty acid compositions was examined. Cases were small for gestational age (SGA; n = 55) and large for gestational age (LGA; n = 149) infants, whereas controls were appropriate for gestational age (AGA; n = 204) infants. Fatty acid profiles in maternal blood and umbilical cord plasma were analyzed by gas-liquid chromatography. The D6D index was calculated as dihomo-γ-linolenic acid (DGLA 20: 3 n-6) / linoleic acid (18: 2 n - 6), and the D5D index was calculated as arachidonic acid (20: 4 n - 6) / DGLA (20: 3 n - 6). Statistical analysis of umbilical cord blood fatty acids was performed with multiple comparisons. SGA infants showed high umbilical cord values for α-linolenic acid and DHA and lower values for DGLA compared to AGA infants. SGA infants showed a higher D5D index but a lower D6D index than AGA infants. LGA infants showed high values for α-linolenic acid and DGLA and lower values for arachidonic acid than AGA infants. LGA infants showed a high D6D index and a low D5D index relative to AGA infants. No significant differences in maternal blood fatty acid profiles, the D6D index, and D5D index desaturase activities were found among the three groups. There were differences in umbilical cord fatty acid profiles and D6D and D5D indices among AGA, SGA, and LGA infants, but further study is needed.
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Affiliation(s)
- Azusa Matsumoto
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan.
| | - Terue Kawabata
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Yasuo Kagawa
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Kumiko Shoji
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Fumiko Kimura
- Faculty of Comprehensive Human Sciences, Shokei Gakuin University, 4-10-1 Yurigaoka, Natori, Miyagi 981-1295, Japan; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan
| | - Teruo Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takahiro Arima
- Department of Informative Genetics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Nobuo Yaegashi
- Department of Gynecology and Obstetrics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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Iwama N, Sugiyama T, Metoki H, Saito M, Hoshiai T, Watanabe Z, Tanaka K, Sasaki S, Sakurai K, Ishikuro M, Obara T, Tatsuta N, Nishigori H, Kuriyama SI, Arima T, Nakai K, Yaegashi N. Associations between glycosylated hemoglobin level at less than 24 weeks of gestation and adverse pregnancy outcomes in Japan: The Japan Environment and Children's Study (JECS). Diabetes Res Clin Pract 2020; 169:108377. [PMID: 32828835 DOI: 10.1016/j.diabres.2020.108377] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Revised: 08/04/2020] [Accepted: 08/17/2020] [Indexed: 01/13/2023]
Abstract
AIMS To investigate the associations between glycosylated hemoglobin (HbA1c) levels at less than 24 weeks of gestation and adverse pregnancy outcomes in Japan. METHODS This was a prospective nationwide birth cohort study of 77,526 subjects with an HbA1c level of <6.5% (<48 mmol/mol) at less than 24 weeks of gestation. Associations of HbA1c level with adverse pregnancy outcomes were evaluated using multivariate analyses. RESULTS The adjusted odds ratios per 1% (11 mmol/mol) increase in HbA1c level were 1.77 (95% confidence interval [CI]: 1.48-2.12) for hypertensive disorders of pregnancy; 1.78 (95% CI: 1.12-2.83) for placental abruption; 1.30 (95% CI: 1.12-1.50) for preterm birth; 2.11 (95% CI: 1.41-3.16) for very preterm birth; 1.49 (95% CI: 1.33-1.68) for low birth weight infants; 1.95 (95% CI: 1.42-2.70) for macrosomia; 1.23 (95% CI: 1.09-1.39) for small for gestational age; 1.15 (95% CI: 1.04-1.28) for large for gestational age; and 1.29 (95% CI: 1.20-1.39) for the composite adverse pregnancy outcome. CONCLUSIONS The higher the HbA1c level, the higher the risk of adverse pregnancy outcomes in Japan. Further studies will be needed to determine prenatal management based on the HbA1c level in pregnant women with HbA1c <6.5% (<48 mmol/mol) at less than 24 weeks of gestation.
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Affiliation(s)
- Noriyuki Iwama
- Center for Perinatal Medicine, Tohoku University Hospital, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan; Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan.
| | - Takashi Sugiyama
- Department of Obstetrics and Gynecology, Ehime University Graduate School of Medicine, Toon 791-0295, Ehime, Japan.
| | - Hirohito Metoki
- Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, 1-15-1 Fukumuro, Sendai 983-8536, Miyagi, Japan.
| | - Masatoshi Saito
- Center for Perinatal Medicine, Tohoku University Hospital, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Tetsuro Hoshiai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan.
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Kosuke Tanaka
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan.
| | - Satomi Sasaki
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan.
| | - Mami Ishikuro
- Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan.
| | - Taku Obara
- Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan.
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan.
| | - Hidekazu Nishigori
- Fukushima Medical Center for Children and Women, Fukushima Medical University, 1, Hikarigaoka, Fukushima 960-1295, Fukushima, Japan.
| | - Shin-Ichi Kuriyama
- Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan; International Research Institute of Disaster Science, Tohoku University, 468-1, Aramaki, Sendai 980-8572, Miyagi, Japan.
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan.
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan.
| | - Nobuo Yaegashi
- Tohoku Medical Megabank Organization, Tohoku University, 2-1, Seiryomachi, Sendai 980-8573, Miyagi, Japan; Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 1-1, Seiryomachi, Sendai 980-8574, Miyagi, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryomachi, Sendai 980-8572, Miyagi, Japan.
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Tatsuta N, Nakai K, Kasanuma Y, Iwai-Shimada M, Sakamoto M, Murata K, Satoh H. Prenatal and postnatal lead exposures and intellectual development among 12-year-old Japanese children. Environ Res 2020; 189:109844. [PMID: 32678746 DOI: 10.1016/j.envres.2020.109844] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/16/2020] [Accepted: 06/16/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Low-level lead exposure during childhood is associated with deficit in child IQ. However, the association between prenatal lead exposure and child IQ remains inconsistent. The objective of our study was to examine the association between prenatal/postnatal lead exposure and child IQ at the age of 12. METHODS We obtained data pertaining to cord-blood and child-blood lead levels and IQ for 286 children from a prospective birth cohort study (Tohoku Study of Child Development). IQ was assessed using the Wechsler Intelligence Scale for Children-Fourth Edition. Simultaneously, the Boston Naming Test (BNT) was used to assess the children's language ability. RESULTS The median lead level in the cord blood was 0.8 μg/dL (5th-95th percentiles, 0.4-1.4 μg/dL), and that in the blood of 12-year-old children was 0.7 μg/dL (0.4-1.1 μg/dL). IQ and BNT scores were significantly lower in boys than in girls; therefore, multiple regression analysis was conducted separately for boys and girls. Among boys, IQ was associated with child-blood lead (B = -16.362, p = 0.033) but not cord-blood lead (B = -6.844, p = 0.309). When boys were divided into four groups according to the child-blood lead levels, there was a significant decreasing trend for IQ. The score with cues of the BNT was associated with both cord-blood (B = -5.893, p = 0.025) and child-blood (B = -7.108, p = 0.022) lead concentrations in boys. Among girls, there was no significant association of the outcomes with cord-blood or child-blood lead level. CONCLUSIONS These findings suggest that postnatal lead exposure adversely affects the intellectual ability in boys. Furthermore, the language ability is sensitive to prenatal/postnatal lead exposure in boys.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
| | - Yuichi Kasanuma
- Kesen-numa City Hospital, Kesen-numa 988-0181, Japan; Minami-Kesennuma Medical Clinic 988-0025, Japan
| | - Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba 305-8506, Japan
| | - Mineshi Sakamoto
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
| | - Katsuyuki Murata
- Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Hiroshi Satoh
- Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan
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Ito Y, Ueyama J, Nakayama SF, Isobe T, Oya N, Sato H, Ebara T, Yoshimasu K, Tsuno K, Tatsuta N, Nakai K, Kamijima M. Within-individual and interlaboratory variability analyses of urinary metabolites measurements of organophosphorus insecticides. J Expo Sci Environ Epidemiol 2020; 30:721-729. [PMID: 30728480 DOI: 10.1038/s41370-019-0124-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2018] [Revised: 10/29/2018] [Accepted: 11/21/2018] [Indexed: 06/09/2023]
Abstract
Single-spot urine is often used to estimate organophosphorus insecticide (OP) exposure. However, variations of urinary metabolite concentrations during the day are considerable as OP half-lives are short and as diet is their main exposure source. In addition, quality control is indispensable for institutions that analyze these metabolites. This study aimed to clarify (1) adequate frequencies of urine collection for estimating OP exposure and (2) interlaboratory variation in measured concentrations of OP metabolites, dialkylphosphates (DAPs). To quantify intra-individual variations, urine was collected eight times during a period that spanned 5 consecutive days from nine children aged 5-6 years. For interlaboratory variations, 41 spot samples from 14 pregnant women and 13 three-year-old children were used. Intraclass correlation coefficients for the DAPs were moderate but misclassification occurred in > 50% of the surrogate category analyses using single measurements. The misclassification frequency decreased to satisfactory levels when three temporal measurements were conducted. Values of four DAPs measured in the two laboratories correlated well except in the cases of urine samples obtained from two pregnant women. In conclusion, urinary DAPs should be measured from spot urine samples obtained during 3 different days. Sharing matrix-contained standards and quality control samples should minimize interlaboratory variations.
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Affiliation(s)
- Yuki Ito
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan.
| | - Jun Ueyama
- Department of Medical Technology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Shoji F Nakayama
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Tomohiko Isobe
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Naoko Oya
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hirotaka Sato
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Takeshi Ebara
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kouichi Yoshimasu
- Department of Hygiene, School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Kanami Tsuno
- Department of Hygiene, School of Medicine, Wakayama Medical University, Wakayama, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
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Plouffe L, Bosson-Rieutort D, Madaniyazi L, Iwai-Shimada M, Nakai K, Tatsuta N, Nakayama SF, Verner MA. Correction to: Estimated postnatal p,p'-DDT and p,p'-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children. Environ Health 2020; 19:56. [PMID: 32456628 PMCID: PMC7249333 DOI: 10.1186/s12940-020-00609-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
An amendment to this paper has been published and can be accessed via the original article.
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Affiliation(s)
- Laurence Plouffe
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, Montreal, Canada
- Centre de recherche en santé publique, Université de Montréal, CIUSSS du Centre-Sud-de-l'Île-de-Montréal, Montreal, Quebec, Canada
| | - Delphine Bosson-Rieutort
- Department of Management, Evaluation & Health Policy, School of Public Health, Université de Montréal, Montreal, Canada
- Institut national d'excellence en santé et en services sociaux (INESSS), Montreal, Québec, Canada
| | - Lina Madaniyazi
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-0053, Japan
- Department of Pediatric Infectious Disease, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-0053, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shoji F Nakayama
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-0053, Japan
| | - Marc-André Verner
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, Montreal, Canada.
- Centre de recherche en santé publique, Université de Montréal, CIUSSS du Centre-Sud-de-l'Île-de-Montréal, Montreal, Quebec, Canada.
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Plouffe L, Bosson-Rieutort D, Madaniyazi L, Iwai-Shimada M, Nakai K, Tatsuta N, Nakayama SF, Verner MA. Estimated postnatal p,p'-DDT and p,p'-DDE levels and body mass index at 42 months of age in a longitudinal study of Japanese children. Environ Health 2020; 19:49. [PMID: 32393266 PMCID: PMC7216372 DOI: 10.1186/s12940-020-00603-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2019] [Accepted: 04/24/2020] [Indexed: 05/06/2023]
Abstract
BACKGROUND Children are exposed to p,p'-dichlorodiphenyltrichloroethane (p,p'-DDT) and p,p'-dichlorodiphenyldichloroethylene (p,p'-DDE) through placental and lactational transfer. Some studies have suggested that early-life exposure to these compounds could lead to increased body mass index (BMI) during childhood. Our aim was to assess whether children's exposure during the first 2 years of life is associated with BMI z-score in Japanese children at 42 months of age. METHODS We used data from a birth cohort (n = 290) of the Tohoku Study of Child Development. p,p'-DDT and p,p'-DDE levels were measured in breast milk samples collected 1 month after birth, and levels in children were estimated using a toxicokinetic model for three exposure periods (0-6 months, 6-12 months, 12-24 months). Associations between exposure estimates and BMI z-score at 42 months of age were assessed using multivariate linear regression models. RESULTS We found no significant association between levels of p,p'-DDT measured in breast milk or estimated in children and BMI z-score. However, we observed associations between estimated p,p'-DDE levels in girls during all postnatal exposure periods and BMI z-score; for each log increase in the estimated p,p'-DDE levels, BMI z-score increased by 0.23 (C.I. 95%: 0.01, 0.45) for the 0-6 months exposure period, 0.26 (C.I. 95%: 0.06, 0.47) for the 6-12 months exposure period, and 0.24 (C.I. 95%: 0.05, 0.43) for the 12-24 months exposure period. CONCLUSION In this study of Japanese children, estimated postnatal p,p'-DDE levels were associated with increased BMI z-score at 42 months of age, mostly in girls. These results are in line with previous studies supporting that early-life exposure to p,p'-DDE may be associated with higher BMI during childhood.
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Affiliation(s)
- Laurence Plouffe
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, Montreal, Canada
- Centre de recherche en santé publique, Université de Montréal, CIUSSS du Centre-Sud-de-l'Île-de-Montréal, Montreal, Quebec, Canada
| | - Delphine Bosson-Rieutort
- Department of Management, Evaluation & Health Policy, School of Public Health, Université de Montréal, Montreal, Canada
- Institut national d'excellence en santé et en services sociaux (INESSS), Montreal, Québec, Canada
| | - Lina Madaniyazi
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-0053, Japan
- Department of Pediatric Infectious Disease, Institute of Tropical Medicine, Nagasaki University, Nagasaki, Japan
| | - Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-0053, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shoji F Nakayama
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, 305-0053, Japan
| | - Marc-André Verner
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, Montreal, Canada.
- Centre de recherche en santé publique, Université de Montréal, CIUSSS du Centre-Sud-de-l'Île-de-Montréal, Montreal, Quebec, Canada.
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Nita R, Kawabata T, Kagawa Y, Nakayama K, Yanagisawa Y, Iwamoto S, Kimura F, Miyazawa T, Tatsuta N, Arima T, Yaegashi N, Nakai K. Associations of erythrocyte fatty acid compositions with FADS1 gene polymorphism in Japanese mothers and infants. Prostaglandins Leukot Essent Fatty Acids 2020; 152:102031. [PMID: 31923811 DOI: 10.1016/j.plefa.2019.102031] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 11/05/2019] [Indexed: 11/18/2022]
Abstract
Long-chain polyunsaturated fatty acids (LC-PUFAs) are involved in the fetal growth in utero, and are essential for the development of visual and cognitive functions during infancy. The purpose of this study was to examine the associations of erythrocyte fatty acid compositions with FADS1 gene polymorphism in Japanese mothers and infants. The subjects were 383 mothers who participated in an adjunct birth cohort study of the Japan Environment and Children's Study (JECS). In maternal FADS1 SNP genotypes, the precursor fatty acids composition of the Δ5 desaturase in the maternal blood showed significant differences in levels among the groups, and showed increasing values in the order of TT < TC < CC genotype groups. On the other hand, many product fatty acids levels were significantly reduced in the order of TT > TC > CC genotype groups, and DHA levels were significantly lower in the CC genotype group relative to the other groups. Likewise, the relationship between fetal genotype group and fatty acid composition in cord blood was very similar to the maternal relationship. These results indicate the maternal and fetal blood fatty acid compositions are strongly influenced by the FADS1 genotypes. With respect to the cord blood DHA composition, the levels in the fetal CC genotype group showed a trend toward lower values in the maternal CC genotype group pair (p = 0.066) compared to the maternal TC genotype group pair. However, in the fetal TT and TC genotype groups (p = 0.131, p = 0.729, respectively), the maternal genotype did not have a significant effect. The DHA composition was more influenced by the maternal genotype in the fetal CC genotype group than in the fetal TT and TC genotype groups. It was shown that DHA transport via the placenta from the mother might be promoted in the fetal CC genotype compared to the other fetal genotype groups. In conclusion, differences in the FADS1 SNP genotypes of pregnant women and their children may greatly affect the supply of LC-PUFAs. Further studies on the involvement of the FADS1 polymorphisms and the fetal LC-PUFA levels in the fetal growth and development are warranted.
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Affiliation(s)
- Reiko Nita
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan.
| | - Terue Kawabata
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Yasuo Kagawa
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Kazuhiro Nakayama
- Department of Integrated Biosciences, Graduate School of Frontier Sciences, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277-8562, Japan
| | - Yoshiko Yanagisawa
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Sadahiko Iwamoto
- Division of Human Genetics, Center for Molecular Medicine, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Fumiko Kimura
- Faculty of Comprehensive Human Sciences, Shokei Gakuin University, 4-10-1 Yurigaoka, Natori, Miyagi 981-1295, Japan; Food and Health Science Research Unit, Graduate School of Agricultural Science, Tohoku University, 468-1 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan
| | - Teruo Miyazawa
- Food and Health Science Research Unit, Graduate School of Agricultural Science, Tohoku University, 468-1 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8572, Japan; Food and Biotechnology Innovation Project, New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Takahiro Arima
- Department of Informative Genetics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Nobuo Yaegashi
- Department of Gynecology and Obstetrics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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Matsuo Y, Nakai K, Sakuma I, Akutsu K, Tatsuta N, Ishiyama M, Higuchi T, Ryuda N, Ueno D. Estimation of Polychlorinated Biphenyls Intake through Fish Oil-Derived Dietary Supplements and Prescription Drugs in the Japanese Population. JFQHC 2019. [DOI: 10.18502/jfqhc.6.4.1992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Background: Oily fish and their extracted oils may be a source of polychlorinated biphenyls (PCBs) which can induce toxic effects on the consumers. The main aim of this survey was estimation of PCBs intake through fish oil-derived dietary supplements and prescription drugs in the Japanese population. Methods: PCBs levels were determined in 20 fish oil-derived dietary supplements and 6 oil-derived prescription drugs from the Japanese market using Gas Chromatography-Mass Spectrometry. Then, the daily exposure to PCBs was estimated. Data were statistically analyzed using JMP software suite. Results: Totally, 17 of the 26 fish oil-derived products were contaminated with PCBs. The median PCB concentrations in the total set of fish oil-derived products was 2.2 ng/g oil wt. with a range of <MDL-720 ng/g oil wt. The average total daily intake of PCBs was estimated to be ranged from 770 to 2800 ng/day in the Japanese population. Conclusion: PCBs intakes through fish oil-derived dietary supplements and prescription drugs in the Japanese adults were much lower than tolerable daily intake
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Yamada K, Kawabata T, Kagawa Y, Kimura F, Miyazawa T, Tatsuta N, Saito S, Arima T, Yaegashi N, Nakai K. Relationships between docosahexaenoic acid compositions of maternal and umbilical cord erythrocytes in pregnant Japanese women. Prostaglandins Leukot Essent Fatty Acids 2019; 147:1-5. [PMID: 31280860 DOI: 10.1016/j.plefa.2019.04.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 04/06/2019] [Accepted: 04/11/2019] [Indexed: 01/21/2023]
Abstract
Previous reports have shown that the transfer of docosahexaenoic acid (DHA) from mother to fetus during pregnancy is important for development of the child's nervous and visual functions. The amount of DHA passing through the placenta varies depending on the relative DHA compositions of the erythrocytes in the maternal blood and the umbilical cord. Prior research has reported that if the DHA composition of the maternal erythrocytes is over 5.6 g%, DHA in the erythrocytes of the child undergoes bioattenuation, whereas it undergoes biomagnification if the maternal erythrocyte composition is lower than 5.6 g%. The relationship between DHA levels in maternal erythrocytes during pregnancy and in umbilical cord erythrocytes at delivery was assessed in Japanese pregnant women. This study was performed as an adjunct study of the Japan Environment and Children's Study. DHA compositions of maternal erythrocytes at 24-30 weeks of pregnancy and of umbilical cord erythrocytes at delivery were determined in 1368 mother-infant pairs. Median DHA values were 7.41% in the maternal erythrocytes and 6.84% in the umbilical cord erythrocytes, indicating significantly lower levels in the umbilical cord. When DHA composition in maternal erythrocytes was lower than 6.6%, DHA was theoretically higher in umbilical cord erythrocytes than in maternal erythrocytes. Conversely, when DHA composition in maternal erythrocytes was higher than 6.6%, DHA in umbilical cord erythrocytes was theoretically lower than in maternal erythrocytes. We therefore consider that there is a turning point of around 6% in the DHA composition of maternal and umbilical cord blood that is exchanged between mother and fetus: if the composition in the maternal blood is higher, then bioattenuation in DHA transfer from the maternal circulation to the umbilical cord occurs, while if it is lower, then biomagnification occurs. This corroborates the findings of previous research.
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Affiliation(s)
- Kazumi Yamada
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan.
| | - Terue Kawabata
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Yasuo Kagawa
- Faculty of Nutrition, Kagawa Nutrition University, 3-9-21 Chiyoda, Sakado, Saitama 350-0288, Japan
| | - Fumiko Kimura
- Faculty of Comprehensive Human Sciences, Shokei Gakuin University, 4-10-1 Yurigaoka, Natori, Miyagi 981-1295, Japan; Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan
| | - Teruo Miyazawa
- Food and Biodynamic Chemistry Laboratory, Graduate School of Agricultural Sciences, Tohoku University, 468-1 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-0845, Japan; New Industry Creation Hatchery Center (NICHe), Tohoku University, 6-6-10 Aza-Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8579, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Shoji Saito
- Department of Gynecology and Obstetrics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan; Department of Obstetrics and Gynecology, Kesennuma City Hospital, Akaiwa-Suginosawa 8-2, Kesennuma, Miyagi 988-0181, Japan
| | - Takahiro Arima
- Department of Informative Genetics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Nobuo Yaegashi
- Department of Gynecology and Obstetrics, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
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Ishiyama M, Matsuo Y, Nakai K, Tatsuta N, Nakata H, Mizukawa H, Miyawaki T, Nagasaka H, Someya T, Ueno D. Temporal trends in PCB concentrations in mussels collected from areas affected by the Great East Japan Earthquake and Tsunami. Mar Pollut Bull 2019; 145:81-87. [PMID: 31590837 DOI: 10.1016/j.marpolbul.2019.05.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 05/01/2019] [Accepted: 05/15/2019] [Indexed: 06/10/2023]
Abstract
In the Great East Japan Earthquake of 11 March 2011, a magnitude 9.0 earthquake and accompanying tsunami struck the Tohoku region of Japan. The tsunami washed away old equipment containing polychlorinated biphenyls (PCBs) stored in the region's factories, and these PCBs may have leaked out of their casings into the marine environment. In this study, we evaluate marine PCB contamination by comparing mussels collected before (in 2005) and after (June 2011) the tsunami. PCB contamination levels were significantly elevated in mussel samples collected after the tsunami in June 2011 (3 months after the tsunami). This indicates that PCBs (specifically, formulation KC-400) leaked out of old equipment swept away by the tsunami and accumulated in mussels. PCBs were estimated to have an environmental half-life (EHL) in mussels of 4 months. Our results show that an earthquake and subsequent tsunami can cause elevated PCB contamination in the marine environment.
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Affiliation(s)
| | - Yuki Matsuo
- Graduate School of Agriculture, Saga University, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Graduate School of Medicine, Tohoku University, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Graduate School of Medicine, Tohoku University, Japan
| | - Haruhiko Nakata
- Faculty of Advanced Science and Technology, Kumamoto University, Japan
| | | | | | | | | | - Daisuke Ueno
- Graduate School of Agriculture, Saga University, Japan.
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Matsuo Y, Miyawaki T, Kadokami K, Nakai K, Tatsuta N, Nakata H, Matsumura T, Nagasaka H, Nakamura M, Sato K, Tobo KI, Kakimoto R, Someya T, Ueno D. Development of a novel scheme for rapid screening for environmental micropollutants in emergency situations (REPE) and its application for comprehensive analysis of tsunami sediments deposited by the great east Japan earthquake. Chemosphere 2019; 224:39-47. [PMID: 30807912 DOI: 10.1016/j.chemosphere.2019.02.078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 02/04/2019] [Accepted: 02/12/2019] [Indexed: 06/09/2023]
Abstract
The tsunami triggered by the Great East Japan Earthquake of March 2011, the strongest quake ever recorded in Japan, deposited tsunami sediments along the coastline of the affected area. Because the sediments contained a wide variety of hazardous chemicals, including organic micropollutants, a method for rapidly evaluating the environmental and human health risks of such chemicals is necessary. For this purpose, we propose a novel three-step scheme designated "rapid screening for environmental micropollutants in emergency situations (REPE)". In the first step, samples are subjected to target screening analysis using an automated identification and quantification system (TSA-AIQS) involving gas chromatography mass spectrometry (GC-MS). In the second step, the chemicals detected by TSA-AIQS analysis are quantified precisely by conventional target analysis. The third step is risk assessment of the target chemicals. TSA-AIQS analysis of the tsunami sediments detected 63 substances, including polycyclic aromatic hydrocarbons (both native and alkylated PAHs) at high concentrations. These PAHs were precisely quantified by target analysis, and the concentrations were used to assess the health risks posed by oral intake, which were found to be negligible. Our results suggest that the REPE scheme will be useful for rapid, comprehensive screening and risk assessment in emergency situations.
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Affiliation(s)
- Yuki Matsuo
- Graduate School of Agriculture, Saga University, Japan
| | | | - Kiwao Kadokami
- Institute of Environmental Science and Technology, The University of Kitakyushu, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Graduate School of Medicine, Tohoku University, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Graduate School of Medicine, Tohoku University, Japan
| | - Haruhiko Nakata
- Faculty of Advanced Science and Technology, Kumamoto University, Japan
| | - Toru Matsumura
- Institute of Environmental Ecology, IDEA Consultants, Inc., Japan
| | | | | | | | | | - Risa Kakimoto
- Graduate School of Agriculture, Saga University, Japan
| | | | - Daisuke Ueno
- Graduate School of Agriculture, Saga University, Japan.
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Iwai-Shimada M, Kameo S, Nakai K, Yaginuma-Sakurai K, Tatsuta N, Kurokawa N, Nakayama SF, Satoh H. Exposure profile of mercury, lead, cadmium, arsenic, antimony, copper, selenium and zinc in maternal blood, cord blood and placenta: the Tohoku Study of Child Development in Japan. Environ Health Prev Med 2019; 24:35. [PMID: 31101007 PMCID: PMC6525413 DOI: 10.1186/s12199-019-0783-y] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 04/11/2019] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND The effects of prenatal exposure to toxic elements on birth outcomes and child development have been an area of concern. This study aimed to assess the profile of prenatal exposure to toxic elements, arsenic (As), bismuth (Bi), cadmium (Cd), mercury (total mercury (THg), methylmercury (MHg), inorganic mercury (IHg)), lead (Pb), antimony (Sb) and tin (Sn), and essential trace elements, copper (Cu), selenium (Se) and zinc (Zn), using the maternal blood, cord blood and placenta in the Tohoku Study of Child Development of Japan (N = 594-650). METHODS Inductively coupled plasma mass spectrometry was used to determine the concentrations of these elements (except mercury). Levels of THg and MeHg were measured using cold vapour atomic absorption spectrophotometry and a gas chromatograph-electron capture detector, respectively. RESULTS Median concentrations (25th-75th) of As, Cd, Pb, Sb, Sn and THg in the maternal blood were 4.06 (2.68-6.81), 1.18 (0.74-1.79), 10.8 (8.65-13.5), 0.2 (0.06-0.40) and 0.2 (0.1-0.38) ng mL-1 and 5.42 (3.89-7.59) ng g-1, respectively. Median concentrations (25th-75th) of As, Cd, Pb, Sb, Sn and THg in the cord blood were 3.68 (2.58-5.25), 0.53 (0.10-1.25), 9.89 (8.02-12.5), 0.39 (0.06-0.92) and 0.2 (0.2-0.38) ng mL-1 and 9.96 (7.05-13.8) ng g-1, respectively. CONCLUSIONS THg and Sb levels in the cord blood were twofold higher than those in the maternal blood. Cord blood to maternal blood ratios for As, Cd and Sb widely varied between individuals. To understand the effects of prenatal exposure, further research regarding the variations of placental transfer of elements is necessary.
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Affiliation(s)
- Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan.
| | - Satomi Kameo
- Department of Nutrition, College of Nutrition, Koshien University, Takarazuka, Hyogo, Japan
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kozue Yaginuma-Sakurai
- Department of Human Health and Nutrition, Faculty of Comprehensive Human Sciences, Shokei Gakuin University, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | | | - Shoji F Nakayama
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan
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Hattori H, Kitamura A, Takahashi F, Kobayashi N, Sato A, Miyauchi N, Nishigori H, Mizuno S, Sakurai K, Ishikuro M, Obara T, Tatsuta N, Nishijima I, Fujiwara I, Kuriyama S, Metoki H, Yaegashi N, Nakai K, Arima T. The risk of secondary sex ratio imbalance and increased monozygotic twinning after blastocyst transfer: data from the Japan Environment and Children's Study. Reprod Biol Endocrinol 2019; 17:27. [PMID: 30795788 PMCID: PMC6387559 DOI: 10.1186/s12958-019-0471-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Accepted: 02/15/2019] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Some studies have suggested that blastocyst transfer is associated with i) imbalance in the secondary sex ratio (SSR) (which favors male offspring), ii) increased incidence of monozygotic twins (MZT). In contrast, others have not found these changes. In this study, we evaluated the association between blastocyst transfer and SSR and MZT, considering potential parental confounders. METHODS The Japan Environment and Children's Study is a large, nationwide longitudinal birth cohort study funded by the Ministry of the Environment of Japan. We used this large dataset, including 103,099 pregnancies, to further investigate the association between blastocyst transfer, SSR and MZT, using spontaneously conceived pregnancies, non-assisted reproductive technology (non-ART) treatment (intrauterine insemination and ovulation induction with timed intercourse) and cleavage stage embryo transfer for comparison. We evaluated the association with each group, the SSR, and the frequency of MZT, calculating the adjusted odds ratio (AOR) using multivariable logistic regression analyses, adjusting for potential parental confounders such as basic health and socioeconomic status. RESULTS For each group (spontaneous conception vs. non-ART treatment vs. cleavage stage embryo transfer vs. blastocyst transfer), the percentages of males were 51.3% vs 50.7% vs 48.9% vs 53.4% and the monozygotic twinning rates per pregnancy were 0.27% vs 0.11% vs 0.27% vs 0.99% respectively. Multivariate logistic regression analyses indicated that blastocyst transfer was significantly associated with a higher SSR and higher incidence of MZT than the other three groups (SSR: AOR 1.095, 95% CI1.001-1.198; MZT: AOR 4.229, 95% CI 2.614-6.684). CONCLUSIONS There are significant relationships between blastocyst transfer and SSR imbalance and a higher occurrence of MZT.
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Affiliation(s)
- Hiromitsu Hattori
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Akane Kitamura
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Fumiaki Takahashi
- 0000 0001 2248 6943grid.69566.3aClinical Reseach, Innovation and Education Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Norio Kobayashi
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Akiko Sato
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Naoko Miyauchi
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Hidekazu Nishigori
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aDepartment of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Satoshi Mizuno
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Kasumi Sakurai
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Mami Ishikuro
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aTohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Taku Obara
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aTohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aDepartment of Pharmacy, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Nozomi Tatsuta
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Ichiko Nishijima
- 0000 0001 2248 6943grid.69566.3aTohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Ikuma Fujiwara
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Shinichi Kuriyama
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aTohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aDivision of Disaster Public Health, International Research Institute for Disaster Science, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Hirohito Metoki
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aDepartment of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aTohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Nobuo Yaegashi
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aDepartment of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aTohoku Medical Megabank Organization, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Kunihiko Nakai
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
| | - Takahiro Arima
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573 Japan
- 0000 0001 2248 6943grid.69566.3aDepartment of Informative Genetics, Environment and Genome Research Center, Tohoku University Graduate School of Medicine, 2-1 Seiryo-cho, Aoba-ku, Sendai, 980-8575 Japan
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Watanabe Z, Nishigori H, Tanoue K, Tanaka K, Iwama N, Satoh M, Murakami T, Nishigori T, Mizuno S, Sakurai K, Ishikuro M, Obara T, Tatsuta N, Saito M, Tachibana M, Fujiwara I, Arima T, Takeda T, Kuriyama S, Nakai K, Yaegashi N, Metoki H. Preconception dysmenorrhea as a risk factor for psychological distress in pregnancy: The Japan Environment and Children's Study. J Affect Disord 2019; 245:475-483. [PMID: 30428448 DOI: 10.1016/j.jad.2018.11.061] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2018] [Revised: 09/28/2018] [Accepted: 11/03/2018] [Indexed: 12/28/2022]
Abstract
BACKGROUND Dysmenorrhea influences emotional distress as well as physical suffering in young non-pregnant women. The aim of this study was to assess the potential association between preconception dysmenorrhea and the development of psychological distress during pregnancy. METHODS This study was a part of the Japan Environment and Children's Study (JECS), a nationwide birth cohort study conducted between 2011 and 2014 in Japan. A total of 87,102 pregnant Japanese women with no psychological distress (Kessler 6-item psychological distress scale [K6] score ≤ 12) in early pregnancy were eligible. Among these, 7626 had mild and 1638 had severe preconception dysmenorrhea. The prevalence and risk of maternal psychological distress (K6 scores ≥ 13) in the second or third trimester were compared among preconception dysmenorrhea severity groups. RESULTS A higher percentage of women with mild (2.6%) or severe preconception dysmenorrhea (3.6%) suffered psychological distress during pregnancy compared to that in women without dysmenorrhea (2.1%). A multilevel logistic regression model, adjusting for baseline characteristics and the K6 score at enrollment, showed that the severity of dysmenorrhea was associated with psychological distress (mild dysmenorrhea: adjusted odds ratio [aOR], 1.154; 95% confidence interval [95% CI], 0.980-1.359; and severe dysmenorrhea: aOR, 1.457; 95% CI, 1.087-1.951). LIMITATIONS Information about dysmenorrhea was obtained during early pregnancy. The JECS did not have clear diagnostic criteria for dysmenorrhea. CONCLUSIONS Preconception dysmenorrhea is associated with an elevated incidence of psychological distress during pregnancy. Additionally, expectant mothers with a history of severe dysmenorrhea symptoms before pregnancy have a higher risk of developing psychological distress.
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Affiliation(s)
- Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Hidekazu Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Kaou Tanoue
- Department of Obstetrics and Gynecology, Japanese Red Cross Ishinomaki Hospital. 71 Nishimichishita Hebita, Ishinomaki, Miyagi 986-8522, Japan
| | - Kosuke Tanaka
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Department of Obstetrics and Gynecology, Osaki Citizen Hospital. 3-8-1 Furukawahonami, Osaki, Miyagi 989-6183, Japan
| | - Michihiro Satoh
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine. 1-15-1 Fukumuro, Miyagino-ku, Sendai, Miyagi 983-8536, Japan
| | - Takahisa Murakami
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine. 1-15-1 Fukumuro, Miyagino-ku, Sendai, Miyagi 983-8536, Japan
| | - Toshie Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Satoshi Mizuno
- Tohoku Medical Megabank Organization, Tohoku University. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Mami Ishikuro
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Taku Obara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan; Department of Pharmaceutical Sciences, Tohoku University Hospital. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Masahito Tachibana
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan
| | - Ikuma Fujiwara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Takashi Takeda
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Division of Women's Health, Research Institute of Traditional Asian Medicine, Kindai University. 377-2 Ohno-Higashi, Osaka-Sayama, Osaka 589-8511, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan; Division of Disaster Public Health, International Research Institute for Disaster Science, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine. 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8574, Japan; Environment and Genome Research Center, Tohoku University Graduate School of Medicine. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan; Tohoku Medical Megabank Organization, Tohoku University. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine. 1-15-1 Fukumuro, Miyagino-ku, Sendai, Miyagi 983-8536, Japan; Tohoku Medical Megabank Organization, Tohoku University. 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8573, Japan.
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Tanaka K, Nishigori H, Watanabe Z, Iwama N, Satoh M, Murakami T, Hamada H, Hoshiai T, Saito M, Mizuno S, Sakurai K, Ishikuro M, Obara T, Tatsuta N, Fujiwara I, Kuriyama S, Arima T, Nakai K, Yaegashi N, Metoki H. Higher prevalence of hypertensive disorders of pregnancy in women who smoke: the Japan environment and children's study. Hypertens Res 2019; 42:558-566. [PMID: 30662062 DOI: 10.1038/s41440-019-0206-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 08/02/2018] [Accepted: 08/08/2018] [Indexed: 11/09/2022]
Abstract
Smoking during pregnancy is a risk factor for various adverse birth outcomes but lowers the risk of preeclampsia. Cardiovascular adaptations might underlie these associations. We examined the association of maternal smoking with the risk of hypertensive disorders of pregnancy (HDP) in a low-risk population-based cohort of 76,303 pregnant women. This study was a part of the Japan Environment and Children's Study. Smoking status was assessed using questionnaires completed by participants. Information about HDP was assessed using questionnaires completed by doctors. Compared with that for women who did not smoke, women who continued smoking >10 cigarettes per day during pregnancy had a significantly higher risk of developing HDP (odds ratio: 1.58, 95% confidence interval: 1.11-2.25). In multivariate analyses with adjustment for possible confounding factors, the association still remained (odds ratio: 1.51, 95% confidence interval: 1.04-2.19). When we regarded the number of cigarettes as a continuous variable, there was a linear association between the number of cigarettes and risk of HDP, with an odds ratio of 1.02 per cigarette per day (95% confidence interval: 1.00-1.04). Smoking a greater number of cigarettes was associated with a higher risk of HDP after adjustment for possible confounding factors. Cigarette smoking cessation may avoid the complications of HDP. Our findings suggest that, in addition to the risk of small-for-gestational-age children, an increased risk of HDP should be considered in the management of pregnant women who smoke cigarettes.
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Affiliation(s)
- Kosuke Tanaka
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Hidekazu Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Noriyuki Iwama
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Michihiro Satoh
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine, Sendai, Miyagi, Japan
| | - Takahisa Murakami
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine, Sendai, Miyagi, Japan
| | - Hirotaka Hamada
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Tetsuro Hoshiai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Satoshi Mizuno
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Mami Ishikuro
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Taku Obara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Ikuma Fujiwara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,International Research Institute of Disaster Science, Tohoku University, Sendai, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Hirohito Metoki
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan. .,Division of Public Health, Hygiene and Epidemiology, Tohoku Medical and Pharmaceutical University Faculty of Medicine, Sendai, Miyagi, Japan. .,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.
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40
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Maeda E, Murata K, Kumazawa Y, Sato W, Shirasawa H, Iwasawa T, Izumo K, Tatsuta N, Sakamoto M, Terada Y. Associations of environmental exposures to methylmercury and selenium with female infertility: A case-control study. Environ Res 2019; 168:357-363. [PMID: 30384229 DOI: 10.1016/j.envres.2018.10.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2018] [Revised: 09/13/2018] [Accepted: 10/03/2018] [Indexed: 05/28/2023]
Abstract
BACKGROUND Methylmercury exposure is a common health risk resulting from daily fish intake. However, studies addressing the link between methylmercury and infertility are limited and also inconsistent. In addition, no previous epidemiological studies have accounted for the interaction between methylmercury and selenium. We aimed to investigate the association between environmental exposures to metals and female fertility. METHODS This case-control study included 98 infertile women receiving fertility treatment (infertile group) and 43 female workers in their thirties (control group) who provided blood samples and returned a questionnaire on lifestyles and dietary characteristics. Blood levels of mercury, lead, cadmium, arsenic, manganese, zinc, and selenium were compared between the groups. Spearman correlation analyses between anti-Müllerian hormone and the metals were conducted. RESULTS The mean selenium level in blood (± SD) and the selenium/mercury molar ratio were significantly lower in the infertile group (189 ± 25 μg/L and 94.6 ± 44.3, respectively) than in the control group (200 ± 25 μg/L and 118.4 ± 70.5). By contrast, blood mercury levels after adjusting for blood selenium and age were significantly higher in the infertile group than in the control group. Multiple logistic regression analyses with the adjustment for the other metals and potential confounders confirmed significant associations of infertility with elevated mercury and reduced selenium levels. No significant correlations were observed between anti-Müllerian hormone and metals. CONCLUSIONS Methylmercury and selenium exposures appear to have adverse and protective effects on female fertility, respectively. This is the first report to suggest the antagonistic interaction between methylmercury and selenium in relation to human female fertility.
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Affiliation(s)
- Eri Maeda
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan.
| | - Yukiyo Kumazawa
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Wataru Sato
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Hiromitsu Shirasawa
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Takuya Iwasawa
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
| | - Kimiko Izumo
- Department of Environment and Public Health, National Institute for Minamata Disease, Kumamoto, Japan
| | - Nozomi Tatsuta
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan; Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Mineshi Sakamoto
- Department of Environment and Public Health, National Institute for Minamata Disease, Kumamoto, Japan
| | - Yukihiro Terada
- Department of Obstetrics and Gynecology, Akita University Graduate School of Medicine, Akita, Japan
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Iwama N, Metoki H, Nishigori H, Mizuno S, Takahashi F, Tanaka K, Watanabe Z, Saito M, Sakurai K, Ishikuro M, Obara T, Tatsuta N, Nishijima I, Sugiyama T, Fujiwara I, Kuriyama S, Arima T, Nakai K, Yaegashi N. Association between alcohol consumption during pregnancy and hypertensive disorders of pregnancy in Japan: the Japan Environment and Children's Study. Hypertens Res 2018; 42:85-94. [PMID: 30401907 DOI: 10.1038/s41440-018-0124-3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 04/05/2018] [Accepted: 05/21/2018] [Indexed: 11/09/2022]
Abstract
This study examined the association between maternal alcohol consumption during pregnancy and hypertensive disorders of pregnancy in the Japan Environment and Children's Study, a nationwide birth cohort study. A total of 76 940 pregnant women were included in the analysis. Information about alcohol consumption during pregnancy was obtained using two questionnaires: T1 and T2. The mean (standard deviation) gestational age in the T1 and T2 questionnaires were 16.5 (5.8) and 27.9 (3.7) weeks, respectively. Alcohol consumption was considered as an exposure, hypertensive disorders of pregnancy as an outcome, and possible confounding factors were included in a generalized linear mixed-effects model with a logit link function. Among the study subjects, 2 348 (3.1%) women developed hypertensive disorders of pregnancy. Compared with 25 300 women who never drank alcohol, 43 women who drank alcohol according to the T1 questionnaire and continued to drink ≥150 g ethanol/week according to the T2 questionnaire had significantly higher odds of hypertensive disorders of pregnancy. The adjusted odds ratio was 3.98 (95% confidence interval [CI], 1.33-11.9). In conclusion, alcohol consumption of ≥150 g ethanol/week during pregnancy is better avoided because of the high odds of developing hypertensive disorders of pregnancy. It may be meaningful that healthcare providers confirm information about alcohol consumption during pregnancy. Moreover, discontinuation of alcohol consumption is recommended to prevent the onset of hypertensive disorders of pregnancy in Japan.
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Affiliation(s)
- Noriyuki Iwama
- Department of Obstetrics and Gynecology, Osaki Citizen Hospital, Osaki, Miyagi, Japan. .,Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.
| | - Hirohito Metoki
- Division of Public Health, Hygiene and Epidemiology, Tohoku Medical Pharmaceutical University, Sendai, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Hidekazu Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Satoshi Mizuno
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan
| | - Fumiaki Takahashi
- Clinical Research, Innovation and Education Center, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Kosuke Tanaka
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masatoshi Saito
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Mami Ishikuro
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Taku Obara
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Ichiko Nishijima
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Takashi Sugiyama
- Department of Obstetrics and Gynecology, Ehime University School of Medicine, Toon, Ehime, Japan
| | - Ikuma Fujiwara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shinichi Kuriyama
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,International Research Institute of Disaster Science, Tohoku University, Sendai, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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42
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Sakamoto M, Tatsuta N, Chan HM, Domingo JL, Murata K, Nakai K. Brain methylmercury uptake in fetal, neonate, weanling, and adult rats. Environ Res 2018; 167:15-20. [PMID: 30005196 DOI: 10.1016/j.envres.2018.06.038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 06/15/2018] [Accepted: 06/18/2018] [Indexed: 06/08/2023]
Abstract
Fetuses and neonates are known to be highly susceptible to methylmercury (MeHg) toxicity, but little is known about the relative uptake of MeHg from blood to the developing brain. We measured time-course changes in mercury (Hg) concentrations in the brain of fetal, neonate, weanling, and adult rats after an injection of 0.08 μg (0.4 nmol) Hg/g MeHg. In the prenatal experiment, MeHg was subcutaneously injected to pregnant dams on embryonic days 17, 18, 18.5, 19, 19.5, or 20, and Hg concentrations in tissues were measured in both mothers and fetuses on embryonic day 21 (1 day before parturition). Brain Hg levels in fetuses peaked 2 days after injection and were approximately 1.5 times higher than in mothers. In the postnatal experiment, the same MeHg dose was injected subcutaneously to male rats on postnatal days 1 (neonates), 35 (weanlings), or 56 (adults). Mercury concentrations in tissues were measured 1, 2, 3, 4, 5, or 6 days after the injection. Brain Hg levels peaked most rapidly in neonates, and were approximately 1.5 times higher than levels in weanlings or adults. Throughout the examined period, peak Hg levels in the brain and the Hg brain/blood ratio 24 h after injection were highest in fetuses, followed by the levels in neonates, and decreased with life stage. These findings suggest that relatively higher brain MeHg uptake is an important factor in the vulnerability of fetuses and neonates to MeHg exposure.
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Affiliation(s)
- Mineshi Sakamoto
- Department of Environment and Public Health, National Institute for Minamata Disease, 4058-18 Hama, Kumamoto 867-0008, Japan; Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
| | - Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hing Man Chan
- Center for Advanced Research in Environmental Genomics, Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - José L Domingo
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat "Rovira I Virgili", Reus, Spain
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University School of Medicine, Akita, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
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43
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Tatsuta N, Nakai K, Sakamoto M, Murata K, Satoh H. Methylmercury Exposure and Developmental Outcomes in Tohoku Study of Child Development at 18 Months of Age. Toxics 2018; 6:toxics6030049. [PMID: 30134554 PMCID: PMC6161177 DOI: 10.3390/toxics6030049] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2018] [Revised: 08/14/2018] [Accepted: 08/18/2018] [Indexed: 11/21/2022]
Abstract
Seafood is an important component in a healthy diet and may contain methylmercury or other contaminants. It is important to recognize the risks and benefits of consuming seafood. A longitudinal prospective birth cohort study has been conducted to clarify the effects of neurotoxicants on child development—the Tohoku Study of Child Development (TSCD) in Japan. TSCD comprises two cohorts; a polychlorinated biphenyls (PCB) cohort (urban area) and a methylmercury cohort (coastal area). Our previous results from the coastal area showed prenatal methylmercury exposure affected psychomotor development in 18-month-olds, and boys appear to be more vulnerable to the exposure than girls. In this report, we have added the urban area cohort and we reanalyzed the impact of prenatal exposure to methylmercury, which gave the same results as before. These findings suggest prenatal exposure to low levels methylmercury may have adverse effects on child development, especially in boys.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
| | - Mineshi Sakamoto
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
- Environmental Health Section, Department of Environmental Science and Epidemiology, National Institute for Minamata Disease, Kumamoto 867-0008, Japan.
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita 010-8502, Japan.
| | - Hiroshi Satoh
- Environmental Health Science, Tohoku University Graduate School of Medicine, Sendai 980-8575, Japan.
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Ishikawa T, Obara T, Nishigori H, Nishigori T, Metoki H, Ishikuro M, Tatsuta N, Mizuno S, Sakurai K, Nishijima I, Murai Y, Fujiwara I, Arima T, Nakai K, Yaegashi N, Kuriyama S, Mano N. Update on the prevalence and determinants of folic acid use in Japan evaluated with 91,538 pregnant women: the Japan Environment and Children's Study. J Matern Fetal Neonatal Med 2018; 33:427-436. [PMID: 29950122 DOI: 10.1080/14767058.2018.1494712] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Objective: To provide the latest and most promising evidence on the prevalence and determinants for folic acid supplementation in pregnant women in Japan, including differences in prevalence between interview years and determinants across regions.Materials and methods: The study participants were enrolled from 15 regional centers across Japan between January 2011 and March 2014. Information on the use of folic acid supplementation before and during pregnancy and the characteristics of the participants were collected using questionnaires, medical chart reviews, and interviews by research coordinators.Results: Data for 91,538 women who provided sufficient data on folic acid supplementation were analyzed. The prevalence of adequate users was 8.0%, which, although low, tended to improve over the 4-year recruitment period. Various kinds of sociodemographic factors, lifestyle habits, and obstetrical and medication use history were significant and independent determinants for folic acid use. Associations between adequate preconception folic acid use and its major determinants tended to be similar across regions.Conclusions: Although the prevalence of adequate folic acid use was low, it increased from 2011 to 2014. Reproductive-aged women who have determinants for inadequate folic acid use should be informed about the need for preconception folic acid supplementation to help prevent neural tube defects.
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Affiliation(s)
- Tomofumi Ishikawa
- Laboratory of Clinical Pharmacy, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan
| | - Taku Obara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Hidekazu Nishigori
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Gynecology and Obstetrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Toshie Nishigori
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hirohito Metoki
- Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Division of Public Health, Hygiene and Epidemiology, Faculty of Medicine, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Mami Ishikuro
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoshi Mizuno
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ichiko Nishijima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Yuriko Murai
- Department of Clinical Pharmaceutics, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Ikuma Fujiwara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Department of Pediatrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Nobuo Yaegashi
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Department of Gynecology and Obstetrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Sendai, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan.,Tohoku University International Research Institute for Disaster Science, Sendai, Japan
| | - Nariyasu Mano
- Laboratory of Clinical Pharmacy, Tohoku University Graduate School of Pharmaceutical Sciences, Sendai, Japan.,Department of Pharmaceutical Sciences, Tohoku University Hospital, Sendai, Japan
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45
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Tsuno K, Yoshimasu K, Hayashi T, Tatsuta N, Ito Y, Kamijima M, Nakai K. [Reliability and Validity of the Behavioral Check List for Preschool Children to Measure Attention Deficit Hyperactivity Behaviors]. Nihon Eiseigaku Zasshi 2018; 73:225-234. [PMID: 29848875 DOI: 10.1265/jjh.73.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVES Nowadays, attention deficit hyperactivity (ADH) problems are observed commonly among school-age children. However, questionnaires specific to ADH behaviors among preschool children are very few. The aim of this study was to investigate the reliability and validity of the 25-item Behavioral Check List (BCL), which was developed from interviews of parents with children who were diagnosed as having Attention-deficit/hyperactivity disorder (ADHD) and measures ADH behaviors in preschool age. METHODS We recruited 22 teachers from 10 nurseries/kindergartens in Miyagi Prefecture, Japan. A total of 138 preschool children were assessed using the BCL. To investigate inter-rater reliability, two teachers from each facility assess seven to twenty children in their class, and intraclass correlation coefficients (ICCs) were calculated. The teachers additionally answered questions in the 1/5-5 Caregiver-Teacher Report Form (C-TRF) to investigate the criterion validity of the BCL. To investigate structural validity, exploratory factor analysis with promax rotation and confirmatory factor analysis were performed. RESULTS The internal consistency reliability of the BCL was good (α = 0.92) and correlation analyses also confirmed its excellent criterion validity. Although exploratory factor analysis for the BCL yielded a five-factor model that consisted of a factor structure different from that of the original one, the results were similar to the original six factors. The ICCs of the BCL were 0.38-0.99 and it was not high enough for inter-rater reliability in some facilities. However, there is a possibility to improve it by giving raters adequate explanations when using BCL. CONCLUSIONS The present study showed acceptable levels of reliability and validity of the BCL among Japanese preschool children.
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Affiliation(s)
- Kanami Tsuno
- Department of Hygiene, School of Medicine, Wakayama Medical University.,Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health
| | - Kouichi Yoshimasu
- Department of Hygiene, School of Medicine, Wakayama Medical University
| | - Takashi Hayashi
- Department of Developmental Medicine/Centre for Developmental Disabilities Studies, Nishikawa Clinic
| | - Nozomi Tatsuta
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine
| | - Yuki Ito
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences
| | - Michihiro Kamijima
- Department of Occupational and Environmental Health, Nagoya City University Graduate School of Medical Sciences
| | - Kunihiko Nakai
- Department of Development and Environmental Medicine, Tohoku University Graduate School of Medicine
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Kakimoto R, Ichiba M, Matsumoto A, Nakai K, Tatsuta N, Iwai-Shimada M, Ishiyama M, Ryuda N, Someya T, Tokumoto I, Ueno D. Variability and reliability of POP concentrations in multiple breast milk samples collected from the same mothers. Environ Sci Pollut Res Int 2018; 25:16309-16315. [PMID: 29332276 DOI: 10.1007/s11356-017-1031-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 12/12/2017] [Indexed: 06/07/2023]
Abstract
Risk assessment of infant using a realistic persistent organic pollutant (POP) exposure through breast milk is essential to devise future regulation of POPs. However, recent investigations have demonstrated that POP levels in breast milk collected from the same mother showed a wide range of variation daily and monthly. To estimate the appropriate sample size of breast milk from the same mother to obtain reliable POP concentrations, breast milk samples were collected from five mothers living in Japan from 2006 to 2012. Milk samples from each mother were collected 3 to 6 times a day through 3 to 7 days consecutively. Food samples as the duplicated method were collected from two mothers during the period of breast milk sample collection. Those were employed for POP (PCBs, DDTs, chlordanes, and HCB) analysis. PCB concentrations detected in breast milk samples showed a wide range of variation which was maximum 63 and 60% of relative standard deviation (RSD) in lipid and wet weight basis, respectively. The time course trend of those variations among the mothers did not show any typical pattern. A larger amount of PCB intake through food seemed to affect 10 h after those concentrations in breast milk in lipid weight basis. Intraclass correlation coefficient (ICC) analyses indicated that the appropriate sample size for good reproducibility of POP concentrations in breast milk required at least two samples for lipid and wet weight basis.
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Affiliation(s)
- Risa Kakimoto
- Department of Environmental Science, Graduate School of Agriculture, Saga University, Honjo 1, Saga, 840-8502, Japan
| | - Masayoshi Ichiba
- Department of Social Medicine, Saga University School of Medicine, Saga, Japan
| | - Akiko Matsumoto
- Department of Social Medicine, Saga University School of Medicine, Saga, Japan
| | - Kunihiko Nakai
- Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Nozomi Tatsuta
- Graduate School of Medicine, Tohoku University, Sendai, Japan
| | - Miyuki Iwai-Shimada
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Momoko Ishiyama
- Department of Environmental Science, Graduate School of Agriculture, Saga University, Honjo 1, Saga, 840-8502, Japan
| | - Noriko Ryuda
- Department of Environmental Science, Graduate School of Agriculture, Saga University, Honjo 1, Saga, 840-8502, Japan
| | - Takashi Someya
- Department of Environmental Science, Graduate School of Agriculture, Saga University, Honjo 1, Saga, 840-8502, Japan
| | - Ieyasu Tokumoto
- Department of Environmental Science, Graduate School of Agriculture, Saga University, Honjo 1, Saga, 840-8502, Japan
| | - Daisuke Ueno
- Department of Environmental Science, Graduate School of Agriculture, Saga University, Honjo 1, Saga, 840-8502, Japan.
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47
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Tatsuta N, Nakai K, Iwai-Shimada M, Mizutani F, Murata K, Chisaki Y, Satoh H. A methodological consideration for blood lead concentrations obtained from the earlobe in Japanese adults occupationally unexposed to lead. Environ Health Prev Med 2017; 22:78. [PMID: 29228902 PMCID: PMC5725893 DOI: 10.1186/s12199-017-0685-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 11/23/2017] [Indexed: 11/16/2022] Open
Abstract
Background Neuropsychological effects of considerably low levels of lead exposure are observed in children, and a reliable and possibly painless technique that can detect such levels is required for the assessment of such exposure. We examined whether the blood lead (BPb) concentrations obtained from the earlobe were as valid and useful as those from the median cubital vein. Methods Paired blood samples were collected from the earlobe and cubital vein of 112 Japanese participants occupationally unexposed to lead, and the BPb levels were determined using ICP-MS. Results The limit of detection of BPb for the ICP-MS method was 0.015 μg/dL, and there was no participant with a BPb level below this limit. The median values of BPb concentrations were 0.91 (range, 0.41–2.48) μg/dL for earlobe blood using a 175-μL capillary tube and 0.85 (0.35–2.39) μg/dL for venous blood using a 5-mL vacuum tube. There was a significant correlation between the earlobe BPb levels and cubital vein BPb levels (Spearman rank correlation rS = 0.941), though the earlobe BPb levels were significantly higher than the cubital vein BPb levels. Most of the participants regarded earlobe puncture as a painless method. Conclusions These data suggest that earlobe BPb levels can be used to assess lead exposure in children. Blood collection using a capillary tube should be done carefully and promptly because slow withdrawal may lead to measurement bias.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.,, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan.
| | - Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies, Tsukuba, Japan
| | - Futoshi Mizutani
- Institute of Environmental Ecology, IDEA Consultants, Inc., Yaizu, Japan
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, Akita, Japan
| | - Yoichi Chisaki
- Institute of Environmental Ecology, IDEA Consultants, Inc., Yaizu, Japan
| | - Hiroshi Satoh
- Environmental Health Science, Tohoku University Graduate School of Medicine, Sendai, Japan
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48
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Tatsuta N, Nakai K, Iwai-Shimada M, Suzuki T, Satoh H, Murata K. Total mercury levels in hair of children aged 7years before and after the Great East Japan Earthquake. Sci Total Environ 2017; 596-597:207-211. [PMID: 28432910 DOI: 10.1016/j.scitotenv.2017.04.110] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 04/11/2017] [Accepted: 04/14/2017] [Indexed: 06/07/2023]
Abstract
The Great East Japan Earthquake on March 11, 2011 caused severe damage to the Sanriku coastal area, where we have been conducting a birth cohort study. The disaster occurred in the middle of 7-year-old examination. The mother-child pairs who participated in our study were compulsorily divided into two groups: the examination was finished for 157 children before the disaster, and for 335 after the disaster. We examined whether the disaster affected total mercury (THg) levels of the cohort, as well as a relationship between the THg levels at birth and at present. Although there was no significant difference between the predisaster and postdisaster groups for THg levels in cord blood (16.3 and 16.1ngg-1, respectively) or maternal hair at parturition (2.57 and 2.55μgg-1, respectively), the THg in hair of the 7-year-old children was significantly lower in the postdisaster group (1.79μgg-1) than in the predisaster group (2.51μgg-1). The difference remained significant after adjusting for the prenatal exposure level of THg. In the 492 mother-child pairs, the cord-blood THg was significantly correlated with the THg in maternal hair at parturition (r=0.846) and in hair of the 7-year-old children (r=0.147). In conclusion, the 29% decrease in hair THg after the disaster appears to have been due to the fact that children in the affected area could not consume fish/seafood as usual, probably because of destructive damage to the fishery. Nevertheless, the THg levels at 7years of age reflected the prenatal exposure levels to some extent.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan; Department of Environmental Health Sciences, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita 010-8543, Japan
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Miyuki Iwai-Shimada
- Centre of Health and Environmental Risk Research, National Institute for Environmental Studies, 16-2, Onokawa, Tsukuba, Ibaraki 305-8506, Japan
| | - Tomoe Suzuki
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Hiroshi Satoh
- Environmental Health Sciences, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi 980-8575, Japan
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine, 1-1-1 Hondo, Akita, Akita 010-8543, Japan.
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49
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Nishigori H, Obara T, Nishigori T, Mizuno S, Metoki H, Hoshiai T, Watanabe Z, Sakurai K, Ishikuro M, Tatsuta N, Nishijima I, Fujiwara I, Kuriyama S, Arima T, Nakai K, Yaegashi N. Selective serotonin reuptake inhibitors and risk of major congenital anomalies for pregnancies in Japan: A nationwide birth cohort study of the Japan Environment and Children's Study. Congenit Anom (Kyoto) 2017; 57:72-78. [PMID: 27878857 DOI: 10.1111/cga.12202] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 11/08/2016] [Accepted: 11/15/2016] [Indexed: 11/26/2022]
Abstract
We analyzed data from the Japan Environment and Children's Study (JECS), on the association between selective serotonin reuptake inhibitors (SSRI) use during pregnancy and the risk of developing of major congenital anomalies in Japan. JECS is an ongoing nationwide birth cohort study. The study includes 95 994 single pregnant women and their offspring. Among them, 172 used any SSRI up to the 12th gestational week. Crude analyses show a significantly increased incidence of upper limb, abdominal, and urogenital abnormalities. In particular, the incidence of microcephaly, hydrencephalus, esophageal atresia, small intestinal atresia, and achondroplasia was significantly higher with than without exposure to these substances. On multivariate analyses, urogenital abnormality was significant (odds ratio 3.227; 95% confidence interval: 1.460-7.134). This Japanese nationwide birth cohort survey clarified that the use of any SSRI until the 12th gestational week was associated with urogenital abnormality in children. The survey for association with minor classification abnormality needs further examination in Japan.
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Affiliation(s)
- Hidekazu Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Taku Obara
- Pharmaceutical Sciences, Tohoku University Hospital, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Toshie Nishigori
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Satoshi Mizuno
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Hirohito Metoki
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan.,Department of Public Health and Hygiene, Tohoku Medical and Pharmaceutical University School of Medicine, Miyagi, Japan
| | - Tetsuro Hoshiai
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Zen Watanabe
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kasumi Sakurai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Mami Ishikuro
- Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Nozomi Tatsuta
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Ichiko Nishijima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
| | - Ikuma Fujiwara
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Shinichi Kuriyama
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan.,International Research Institute of Disaster Science, Tohoku University, Miyagi, Japan
| | - Takahiro Arima
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Kunihiko Nakai
- Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Nobuo Yaegashi
- Department of Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Environment and Genome Research Center, Tohoku University Graduate School of Medicine, Miyagi, Japan.,Tohoku Medical Megabank Organization, Tohoku University, Miyagi, Japan
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50
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Tatsuta N, Murata K, Iwai-Shimada M, Yaginuma-Sakurai K, Satoh H, Nakai K. Psychomotor Ability in Children Prenatally Exposed to Methylmercury: The 18-Month Follow-Up of Tohoku Study of Child Development. TOHOKU J EXP MED 2017; 242:1-8. [PMID: 28484113 DOI: 10.1620/tjem.242.1] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Fish contain nutrients essential to the developing fetal brain, but they are contaminated with methylmercury. The Tohoku Study of Child Development, now underway in the Sanriku coastal area of Miyagi prefecture, Japan, follows mother-child pairs to examine the risks and benefits of fish consumption during pregnancy, especially the effects of prenatal exposures to methylmercury, selenium, and docosahexaenoic acid (DHA) on child neurodevelopment. Children aged 18 months were administered the Bayley Scales of Infant Development second edition (BSID-II) and Kyoto Scale of Psychological Development (KSPD) in 2004-2008. Complete data of cord-blood total mercury (THg), cord-plasma selenium, maternal-plasma DHA, the above test scores, and confounders for 566 mother-child pairs were available. The median cord-blood THg level was 15.7 (range, 2.7-96.1) ng/g. Since the BSID-II and KSPD scores were significantly lower in the 285 boys than in the 281 girls, analyses were conducted separately. The Psychomotor Development Index (PDI) of BSID-II was significantly correlated with cord-blood THg only in the boys, and significance of the association remained unchanged after adjusting for possible confounders; i.e., a 10-fold increase in cord-blood THg was associated with a 8.3-point decrease in the score of the PDI. Other significant correlations of THg were not seen in the boys or girls. Selenium and DHA showed no significant correlations with the BSID-II or KSPD scores in either sex. In conclusion, intrauterine methylmercury exposure may affect psychomotor development, and boys appear to be more vulnerable to the exposure than girls.
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Affiliation(s)
- Nozomi Tatsuta
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine.,Department of Environmental Health Sciences, Akita University Graduate School of Medicine
| | - Katsuyuki Murata
- Department of Environmental Health Sciences, Akita University Graduate School of Medicine
| | - Miyuki Iwai-Shimada
- Centre for Health and Environmental Risk Research, National Institute for Environmental Studies
| | - Kozue Yaginuma-Sakurai
- Department of Human Health and Nutrition, Shokei Gakuin University Faculty of Comprehensive Human Science
| | - Hiroshi Satoh
- Environmental Health Sciences, Tohoku University Graduate School of Medicine
| | - Kunihiko Nakai
- Development and Environmental Medicine, Tohoku University Graduate School of Medicine
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