1
|
Wada K, Hattori A, Maruyama Y, Mori T, Sugino M, Nakashima Y, Yamakawa M, Yamamoto M, Hori A, Seishima M, Tanabashi S, Matsushita S, Nagata C. Dietary melatonin and liver cancer incidence in Japan: From the Takayama study. Cancer Sci 2024; 115:1688-1694. [PMID: 38356184 DOI: 10.1111/cas.16103] [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: 08/25/2023] [Revised: 01/10/2024] [Accepted: 01/25/2024] [Indexed: 02/16/2024] Open
Abstract
There is some biological plausibility that exogenous melatonin plays a role in preventing liver carcinogenesis. There has been little research on the association between melatonin intake in a normal diet and health outcomes. We evaluated the association between dietary melatonin intake and the incidence of liver cancer in a population-based prospective study in Japan. This study included 30,824 residents of Takayama city who were 35 years of age or older in 1992 and had participated in the Takayama study, Japan. Dietary intake was assessed using a validated food frequency questionnaire at the baseline. Melatonin content in foods was measured by liquid chromatography-tandem mass spectrometry. Cancer incidence was confirmed through regional population-based cancer registries in Gifu. Liver cancer was defined as code C22 according to the International Classification of Diseases and Related Health Problems, 10th Revision. Hazard ratios for liver cancer were estimated for the tertile groups of melatonin intake using a Cox proportional hazards model. During the mean follow-up period of 13.6 years, 189 individuals developed liver cancer. Compared with subjects in the lowest tertile of melatonin intake, those in the middle and highest tertiles had decreased risks of liver cancer, with a significant linear trend after multivariate adjustments (hazard ratios: 0.64 and 0.65, respectively, trend p = 0.023). There was no significant interaction by sex (interaction p = 0.54). This initial finding, which needs to be confirmed by further studies, suggests that consuming melatonin-containing foods might play a role in the prevention of liver cancer.
Collapse
Affiliation(s)
- Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Atsuhiko Hattori
- Department of Biology, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Chiba, Japan
| | - Yusuke Maruyama
- Department of Biology, College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Chiba, Japan
| | - Tomoka Mori
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masaaki Sugino
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | | | - Mitsuru Seishima
- Department of Internal Medicine, Takayama Red Cross Hospital, Gifu, Japan
| | - Shinobu Tanabashi
- Department of Internal Medicine, Takayama Red Cross Hospital, Gifu, Japan
| | | | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
2
|
Nagata C, Wada K, Yamakawa M, Nakashima Y, Sugino M, Mori T. Dietary polyamine intake and all-cause and cause-specific mortality in Japanese adults in the Takayama study. Br J Nutr 2024; 131:343-350. [PMID: 37964604 DOI: 10.1017/s0007114523002465] [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: 11/16/2023]
Abstract
Epidemiological studies on the potential health effects of dietary polyamines are scarce. The present study aimed to estimate habitual intake of polyamines (putrescine, spermidine and spermine) and examine whether spermidine intake is inversely associated with all-cause and cause-specific mortality in a population-based cohort study in Japan. The study included 13 355 men and 15 724 women aged 35 years and older. Diet was assessed via a validated FFQ at the baseline in 1992. The intake of polyamines was estimated mainly using databases of polyamine content in foods consumed among Japanese population. Sex-specific hazard ratios (HR) and 95 % CI for all-cause and cause-specific mortality were estimated according to polyamine quartiles. During 16 years of follow-up, 2901 deaths in men and 2438 in women occurred. The intake of any polyamine was not significantly associated with all-cause or cause-specific mortality after controlling for covariates in men and women. There was a suggestive positive association between spermidine intake and cancer mortality in women: HR for the highest v. lowest quartile were 1·38 (95 % CI (0·99, 1·93); Ptrend = 0·02). Our results did not provide support for the notion that dietary spermidine has beneficial effects on mortality. Further studies on dietary polyamines and longevity, as well as the morbidity of specific diseases, including cancer, are needed across populations with different dietary habits.
Collapse
Affiliation(s)
- Chisato Nagata
- Department of Epidemiology & Preventive Medicine, Gifu University, Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology & Preventive Medicine, Gifu University, Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology & Preventive Medicine, Gifu University, Graduate School of Medicine, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology & Preventive Medicine, Gifu University, Graduate School of Medicine, Gifu, Japan
| | - Masaaki Sugino
- Department of Epidemiology & Preventive Medicine, Gifu University, Graduate School of Medicine, Gifu, Japan
| | - Tomoka Mori
- Department of Epidemiology & Preventive Medicine, Gifu University, Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
3
|
Yamakawa M, Wada K, Hayashi M, Ezaki T, Nakashima Y, Nagata C, Sumoto Y. Milk and dairy product intakes, intestinal bacteria, and respiratory infections in children of elementary school age and older in Japan. Nutrition 2023; 115:112145. [PMID: 37517304 DOI: 10.1016/j.nut.2023.112145] [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: 04/05/2023] [Revised: 06/11/2023] [Accepted: 06/27/2023] [Indexed: 08/01/2023]
Abstract
OBJECTIVES The aim of this study was to examine the associations between milk and dairy product intakes, intestinal bacteria, and respiratory infections in children of elementary school age and older in Japan. METHODS We conducted cross-sectional surveys each year from 2013 to 2015 for grades 2, 5, and 8 students of an elementary and junior high school (n = 1020). Exclusion owing to ineligibility regarding data on dietary intake, respiratory infections, and intestinal bacteria led to 922 participants for the analyses. Dietary intake was assessed with a self-administered food frequency questionnaire. Respiratory infections occurring ≥ 4 episodes over the past year were determined based on the caregivers' reports. Intestinal bacteria (species and counts) were analyzed with real-time polymerase chain reaction. Logistic regression models were used to estimate the odds ratios (ORs) and 95% CIs. RESULTS The odds of ≥ 4 respiratory infection episodes decreased with higher milk intake after adjusting for potential confounders, and the ORs (95% CIs) for the second and third tertile categories, compared with the first tertile category, were 0.91 (0.58-1.42) and 0.48 (0.29-0.77), respectively (P for trend = 0.001). A decreasing trend in the ORs for lactic acid drink intake was observed only in those with a low count of intestinal Faecalibacterium prausnitzii. CONCLUSIONS We found that higher milk intake was inversely associated with respiratory infections in children older than preschool age. Higher lactic acid drink intake could be inversely associated only in children with a low F. prausnitzii count in the intestine.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masahiro Hayashi
- Division of Anaerobe Research, Life Science Research Center, Gifu University, Gifu, Japan; Center for Conservation of Microbial Genetic Resource, Gifu University, Gifu, Japan
| | - Takayuki Ezaki
- Center for Conservation of Microbial Genetic Resource, Gifu University, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yoshio Sumoto
- Department of Social Studies Education, Graduate School of Education, Gifu University, Gifu, Japan
| |
Collapse
|
4
|
Yamakawa M, Tanaka Y, Tomokawa S. Personal characteristics associated with handwashing behaviour among Japanese university students studying abroad: Prospective observational studies. Travel Med Infect Dis 2023; 56:102651. [PMID: 37839691 DOI: 10.1016/j.tmaid.2023.102651] [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: 08/29/2023] [Revised: 10/02/2023] [Accepted: 10/06/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND Hand hygiene is recommended to travellers to prevent common travel-related illnesses such as diarrhoea and respiratory infection. For effective hygiene promotion interventions, we aimed to identify the personal characteristics associated with handwashing behaviour. METHODS Prospective observational studies consisting of pre- and post-travel surveys were conducted among Japanese university students studying abroad between 2016 and 2018 (n = 825; 6-38 travel days). Associations of age, sex, study major, and overseas travel experience with handwashing behaviour (5-point scale) were evaluated using ordinal logistic regression models, with adjustment for destination, travel duration, and psychological factors (risk perception of diarrhoea and concern about hygiene). RESULTS Among the participants in our analysis (n = 629), 28.0 % washed their hands before every meal while abroad. The male sex and no overseas travel experience were associated with decreased frequency of infrequent handwashing, even after adjusting for all potential confounding factors, whereas the study major was not associated. The adjusted odds ratios (95 % confidence intervals) were 0.74 (0.56-0.99) for men vs. women and 0.69 (0.52-0.93) for no overseas travel experience vs. overseas travel experience but not to the current destination. CONCLUSIONS The lack of overseas travel experience correlated with handwashing frequency in both men and women. In addition to the travel destination, the male sex and no overseas travel experience should be highlighted in pretravel hand hygiene interventions.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, 1-1 Yanagido, Gifu, 501-1194, Japan.
| | - Yuko Tanaka
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, 466-8555, Japan.
| | - Sachi Tomokawa
- Sports Science Department, Faculty of Education, Shinshu University, 6-ro, Nishi-nagano, Nagano, 380-8544, Japan.
| |
Collapse
|
5
|
Nagata C, Wada K, Yamakawa M, Nakashima Y, Sugino M, Mori T, Nagao Y, Ishihara K, Yamamoto S. Associations of the timing of sleep and meals with the presence of gastroesophageal reflux disease in community-dwelling women in Japan. J Hum Nutr Diet 2023; 36:2026-2035. [PMID: 37452755 DOI: 10.1111/jhn.13207] [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: 05/16/2023] [Accepted: 06/26/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND It has been suspected that circadian rhythms may play a part in the pathogenesis of gastrointestinal diseases including gastroesophageal reflux disease (GERD). The present study aimed to examine the cross-sectional association of the timing of sleep and meals with the presence of GERD in community-dwelling women in Japan. METHODS In total, 605 women responded to a self-administered questionnaire asking for information on GERD symptoms, sleep habits, sleep disturbances and the timing of meals. GERD symptoms were evaluated using the Frequency Scale for the Symptoms of GERD, and participants with a score of more than seven points were classified as having GERD. RESULTS In total, 104 (17.2%) women were found to have GERD. Later bedtime on both weekdays and weekends and later midpoint of sleep were significantly associated with the odds ratios (OR) of GERD after controlling for covariates: ORs for each 1 h delay were 1.31 (95% confidence interval [CI] = 1.03-1.68), 1.38 (95% CI = 1.08-1.75) and 1.43 (95% CI = 1.06-1.95). Having lunch at irregular times was significantly associated with the increased OR of GERD (1.99; 95% CI = 1.02-3.91). Longer overnight fasting duration and longer time intervals from the midpoint of sleep to breakfast and lunch were significantly associated with decreased OR of GERD (ORs for each 1 h increase were 0.73 [95% CI = 0.56-0.95], 0.64 [95% CI = 0.46-0.88] and 0.70 [95% CI = 0.51-0.96]). CONCLUSIONS These data suggest that the timing of sleep and timing of meals relative to the sleep/wake cycle are associated with the presence of GERD.
Collapse
Affiliation(s)
- Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Masaaki Sugino
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Tomoka Mori
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | | | | |
Collapse
|
6
|
Yamakawa M, Tanaka Y, Tokinobu A, Tsuda T. Preparedness for measles among Japanese travellers to India after the COVID-19 pandemic. J Travel Med 2023; 30:taad086. [PMID: 37369004 DOI: 10.1093/jtm/taad086] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 06/29/2023]
Abstract
After the Coronavirus Disease of 2019 pandemic, over half of Japanese budget travellers to India did not adequately prepare for measles. Most of those who visited a clinic for travel vaccination missed the opportunity to get vaccinated against measles. For the summer, urgent efforts to ensure travellers’ preparation for measles are required.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan
| | - Yuko Tanaka
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Akiko Tokinobu
- Center for Diversity and Inclusion, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Toshihide Tsuda
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, 3-1-1 Tsushima-naka, Kita-ku, Okayama 700-8530, Japan
| |
Collapse
|
7
|
Wada K, Nagata C, Yamakawa M, Nakashima Y, Koda S, Uji T, Tsuji M, Nagai H, Itakura N, Harada K, Takahara O, Yamanaka H. Association of dietary fibre intake with subsequent fasting glucose levels and indicators of adiposity in school-age Japanese children. Public Health Nutr 2023; 26:1617-1625. [PMID: 37226764 PMCID: PMC10410373 DOI: 10.1017/s136898002300099x] [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: 01/07/2022] [Revised: 08/29/2022] [Accepted: 10/19/2022] [Indexed: 05/26/2023]
Abstract
OBJECTIVE To evaluate the relationships of fibre intake with subsequent BMI sd-score, waist-to-height ratio and serum fasting glucose levels among school-age Japanese children. DESIGN This is a prospective study of school-age Japanese children. Participants were followed from 6-7 to 9-10 years of age (follow-up rate: 92·0 %). Fibre intake was assessed using a validated FFQ. Serum fasting glucose was measured by a hexokinase enzymatic method. Using a general linear model, the associations between dietary fibre intake at baseline and BMI sd-score, waist-to-height ratio, and serum levels of fasting glucose at follow-up were evaluated after considering potential confounding factors. SETTING Public elementary schools in a city in Japan. PARTICIPANTS A total of 2784 students. RESULTS The estimated means for fasting glucose at 9-10 years of age were 86·45, 85·68, 85·88 and 85·58 mg/dl in the lowest, second, third and highest quartile of fibre intake at 6-7 years of age, respectively (P = 0·033, trend P = 0·018). Higher fibre intake at 6-7 years of age was associated with lower waist-to-height ratio at 9-10 years of age (trend P = 0·023). The change in fibre intake was inversely associated with concurrent change of BMI sd-score (trend P = 0·044). CONCLUSION These results suggest that dietary fibre intake may be potentially effective to limit excess weight gain and lower glucose levels during childhood.
Collapse
Affiliation(s)
- Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
| | - Michiko Tsuji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu501-1194, Japan
- Department of Food Science and Nutrition, Nagoya Women’s University, Nagoya, Japan
| | | | | | - Kou Harada
- Hekinan Medical Association, Hekinan, Japan
| | | | | |
Collapse
|
8
|
Nagata C, Wada K, Yamakawa M, Nakashima Y, Sugino M, Mori T. Sleep duration and the onset of menopause in Japanese women. Menopause 2023; 30:437-440. [PMID: 36787529 DOI: 10.1097/gme.0000000000002156] [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] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
OBJECTIVE Sleep characteristics may potentially affect the hormonal environment related to follicular degeneration. The present study aimed to examine the association between sleep duration and the onset of menopause in Japanese women. METHODS We conducted a prospective study among 3,090 premenopausal Japanese women aged 35 to 56 years derived from participants in the Takayama Study. Habitual sleep duration was determined by a self-administered questionnaire at the baseline. Menopausal status was defined as the absence of menstruation for 12 months or more. The Cox proportional hazard model was used to estimate the hazard ratio of the occurrence of menopause for each category of sleep duration (≤6, 8, and ≥9 h) as compared with 7 hours of sleep after controlling for age, parity, body mass index, smoking status, years of education, and lifelong irregular menstrual cycle. RESULTS During the 10 follow-up years, 1,776 women experienced natural menopause. Sleep duration of ≤6 hours was significantly associated with decreased hazard ratio of menopause (0.88; 95% confidence interval, 0.78-0.99). CONCLUSIONS The data suggest that short sleep duration is associated with later onset of menopause.
Collapse
Affiliation(s)
- Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | | | | | | | | | | |
Collapse
|
9
|
Nagata C, Wada K, Yamakawa M, Nakashima Y, Hayashi M, Takeda N, Yasuda K. Sleep-related factors and circulating levels of sex hormones in premenopausal Japanese women. Endocr J 2023; 70:267-273. [PMID: 36384969 DOI: 10.1507/endocrj.ej22-0337] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Sleep disruption and circadian disruption have been proposed to be risk factors of breast cancer. The present study examined the associations of sleep-related factors, referring to night shift work, sleep habits, and sleep disturbances, with the plasma levels of sex hormones in premenopausal Japanese women. Study participants were 432 women who had regular menstrual cycles less than 40 days long. Information on their history of night shift work and sleep disturbances was obtained using a self-administered questionnaire. Information on their sleep habits, such as usual wake-up times, bedtimes, and ambient light level while sleeping, was obtained in an interview. The participants' height and weight were measured. Plasma concentrations of estradiol, testosterone, dehydroepiandrosterone sulfate, sex hormone-binding globulin (SHBG), FSH, and LH were also measured. After controlling for the phase of the menstrual cycle and other covariates, more years of night shift work ≥ once a week during the past 10 years was significantly associated with a lower SHBG and a higher free estradiol level. Shorter sleep duration was significantly associated with the higher total, bioavailable, and free testosterone levels. Sleep disturbance by awaking after sleep onset was significantly associated with a high free estradiol level. The data suggest that long-term night shift work, short sleep duration, and arousal during sleep are associated with higher estradiol or testosterone levels in premenopausal women.
Collapse
Affiliation(s)
- Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu 501-1194, Japan
| | - Makoto Hayashi
- Department of Internal Medicine, Matsunami General Hospital, Gifu 501-6062, Japan
| | - Noriyuki Takeda
- Department of Endocrinology and Metabolism, Murakami Memorial Hospital, Asahi University, Gifu 500-8523, Japan
| | - Keigo Yasuda
- Department of Internal Medicine, Matsunami General Hospital, Gifu 501-6062, Japan
| |
Collapse
|
10
|
Koda S, Wada K, Yamakawa M, Nakashima Y, Hayashi M, Takeda N, Yasuda K, Nagata C. Associations of Plasma 25-Hydroxy Vitamin D and Dietary Vitamin D Intake with Insulin Resistance in Healthy Japanese Women. J Nutr Sci Vitaminol (Tokyo) 2023; 69:46-52. [PMID: 36858540 DOI: 10.3177/jnsv.69.46] [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: 03/02/2023]
Abstract
We investigated the associations of plasma 25-hydroxy vitamin D (25(OH)D) concentration and the dietary intake of vitamin D with insulin resistance in Japanese women. Study participants were 406 Japanese women attended a health examination. They were not taking hormones or medications for diabetes and had no history of cancer, ischemic heart disease, or stroke. Information regarding medical history and lifestyle factors was obtained by a self-administered questionnaire, while hours of sun exposure were determined through interviews. Dietary intake of vitamin D was evaluated using a validated food frequency questionnaire. Fasting plasma glucose and insulin concentrations were measured, and insulin resistance (HOMA-IR) scores were calculated based on homeostasis model assessment. Women with vitamin D deficiency (25(OH)D<20 ng/mL) had significantly higher fasting plasma insulin concentration and HOMA-IR than did the other women. Plasma 25(OH)D concentration was significantly and inversely associated with fasting plasma insulin level and HOMA-IR after controlling for age, season, menopausal status, BMI, smoking status, alcohol intake, physical exercise, and intakes of fat and calcium. Dietary vitamin D intake was not associated with HOMA-IR concentration after adjusting for these covariates and hours of sun exposure. Although significant inverse association between plasma 25(OH)D concentration and HOMA-IR was observed in women with a low BMI, low fat intake, or a high calcium intake, the interaction terms were not statistically significant. Data suggest that plasma vitamin D, but not dietary vitamin D, is inversely associated with fasting plasma insulin concentration and HOMA-IR in non-diabetic Japanese women.
Collapse
Affiliation(s)
- Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Makoto Hayashi
- Department of Internal Medicine, Matsunami General Hospital
| | - Noriyuki Takeda
- Department of Diabetes and Endocrinology, Asahi University Hospital
| | - Keigo Yasuda
- Department of Internal Medicine, Matsunami General Hospital
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| |
Collapse
|
11
|
Yamakawa M, Tsuda T, Wada K, Nagata C, Suzuki E. Diarrhea and related personal characteristics among Japanese university students studying abroad in intermediate- and low-risk countries. PLoS One 2023; 18:e0279426. [PMID: 36827397 PMCID: PMC9956663 DOI: 10.1371/journal.pone.0279426] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 12/06/2022] [Indexed: 02/26/2023] Open
Abstract
Despite an increasing number of students studying abroad worldwide, evidence about health risks while they are abroad is limited. Diarrhea is considered the most common travelers' illness, which would also apply to students studying abroad. We examined diarrhea and related personal characteristics among Japanese students studying abroad. Japanese university students who participated in short-term study abroad programs between summer 2016 and spring 2018 were targeted (n = 825, 6-38 travel days). Based on a 2-week-risk of diarrhea (passing three or more loose or liquid stools per day) among travelers by country, the destination was separated into intermediate- and low-risk countries. After this stratification, the associations between personal characteristics and diarrhea during the first two weeks of their stay were evaluated using logistic regression models. Among participants in intermediate-risk countries, teenagers, males and those with overseas travel experience were associated with an elevated risk of diarrhea; the odds ratios (95% confidence intervals) were 2.42 (1.08-5.43) for teenagers (vs. twenties), 1.93 (1.08-3.45) for males (vs. females) and 2.37 (1.29-4.33) for those with overseas experience (vs. none). Even restricting an outcome to diarrhea during the first week did not change the results substantially. The same tendency was not observed for those in the low-risk countries. Teenage students, males and those with overseas travel experience should be cautious about diarrhea while studying abroad, specifically in intermediate-risk countries.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
- * E-mail:
| | - Toshihide Tsuda
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Etsuji Suzuki
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, United States of America
| |
Collapse
|
12
|
Nakashima Y, Wada K, Yamakawa M, Nagata C. Validity of self‐reported skin color by using skin color evaluation scale. Skin Res Technol 2022; 28:827-832. [PMID: 36210488 PMCID: PMC9907634 DOI: 10.1111/srt.13207] [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] [Received: 04/01/2022] [Accepted: 09/14/2022] [Indexed: 11/07/2022]
Abstract
INTRODUCTION Although skin color has been suggested to be associated with the risk of some chronic disease, there has been no validated visual skin-color scale, with which subjects can self-report their skin color. Our objective was to develop a visual skin color evaluation scale for self-reporting that would be useful in large-scale epidemiological studies. MATERIALS AND METHODS Study participants were 99 university Japanese students aged 19-29. We developed a skin color evaluation scale consisting of six colors from light to dark. Participants were asked to choose one color that was the closest to their skin color. Their skin color was measured on the back of the hand and the inner upper arm by an examiner using a narrowband reflective spectrophotometer. Self-reported skin color was compared with the melanin and erythema indices. RESULTS Spearman's rank correlation coefficients of self-reported color with the melanin index after adjusted for age, temperature, and humidity were moderate but significant at both sites for both men and women. The correlation coefficients with the erythema index were significant only on the back of the hand for men. The higher melanin index was significantly associated with the darker skin color in both sexes for both sites. The erythema index showed such a significant trend only in men and not in women. CONCLUSIONS The validity of the skin color chart was moderate of melanin among Japanese people. It may be useful for large population studies examining the relationships between skin color and health outcomes.
Collapse
Affiliation(s)
- Yuma Nakashima
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| |
Collapse
|
13
|
Yamakawa M, Wada K, Nakashima Y, Nagata C. Dietary lactose and galactose intakes are associated with a later onset of natural menopause among women in a Japanese community. Br J Nutr 2022; 129:1-8. [PMID: 35945659 DOI: 10.1017/s0007114522002586] [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: 11/06/2022]
Abstract
Galactose and its metabolites, primarily derived from lactose, may have toxic effects on the ovary. We aimed to prospectively examine the associations of galactose and lactose intakes with the onset of natural menopause. The data of a population-based cohort study in a Japanese community (the Takayama study) initiated in 1992 were analysed, with follow-up data collected in 2002. Among the participants of the Takayama study, premenopausal women (n 3115) aged 35-56 years at baseline were included in this study. Dietary intake, including lactose and galactose was assessed only at baseline using a FFQ. The menopausal status and age at menopause were determined based on the participants' self-reports, and natural menopause was defined as the absence of menstruation for 12 months or more. Cox proportional hazards models were used to estimate the hazard ratios (HR) and 95 % CI. A total of 1790 women experienced natural menopause within the 10-year follow-up. Lactose and galactose intakes were associated with a later onset of natural menopause after adjusting for potential confounding factors and the HR (95 % CI) for the highest v. lowest quartile were 0·80 (0·69, 0·92) (P-trend = 0·001) in lactose and 0·86 (0·74, 1·00) in galactose (P-trend = 0·036), respectively. High intakes of lactose and galactose were associated with a later onset of natural menopause. Despite the presumed ovotoxicity effects, lactose and galactose intakes at usual levels may not be deleterious to the ovarian aging process among Japanese community-dwelling women.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
14
|
Aoyama T, Maezawa Y, Cho H, Saigusa Y, Tamura J, Tsuchida K, Komori K, Kano K, Segami K, Hara K, Senuki K, Suzuki Y, Yamakawa M, Tamagawa H, Oshima T, Yukawa N, Rino Y. Phase II Study of a Multi-center Randomized Controlled Trial to Evaluate Oral Vitamin B12 Treatment for Vitamin B12 Deficiency After Total Gastrectomy in Gastric Cancer Patients. Anticancer Res 2022; 42:3963-3970. [PMID: 35896261 DOI: 10.21873/anticanres.15891] [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: 06/10/2022] [Revised: 06/23/2022] [Accepted: 06/24/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND/AIM This prospective multi-central randomized phase II trial evaluated the efficacy and safety of oral Vitamin B12 500 μg/day replacement compared with oral Vitamin B12 1,500 μg/day in patients with Vitamin B12 deficiency after total gastrectomy for gastric cancer. PATIENTS AND METHODS Patients were randomly assigned to receive oral Vitamin B12 500 μg/day or Vitamin B12 1,500 μg/day in a 1:1 ratio with a minimization method. The primary endpoint was the incidence of a normal serum Vitamin B12 level at three months after treatment. RESULTS From January 2018 to December 2021, 3 institutions collaborated with the present study, and 74 patients were registered from these 3 institutions. The study was prematurely closed due to poor accrual after reaching almost 50% of its goal. Among the 74 recruited patients, 36 were allocated to the Vitamin B12 500 μg/day arm and 38 to Vitamin B12 1,500 μg/day arm. The incidences of patients with a normal Vitamin B12 level at 3 months (serum Vitamin B12 level >200 pg/ml) were 91.7% (33/36) in the Vitamin B12 500 μg/day arm and 100% (38/38) in the Vitamin B12 1,500 μg/day arm (p=0.3587). The types of clinical symptoms with Vitamin B12 deficiency that improved with Vitamin B12 treatment and the degree of improvement were also similar. CONCLUSION Although the primary endpoint of the present study was not met, it was found that oral Vitamin B12 500 μg/day replacement is as effective and safe as oral Vitamin B12 1,500 μg/day replacement for Vitamin B12 deficiency.
Collapse
Affiliation(s)
- Toru Aoyama
- Department of Surgery, Yokohama City University, Yokohama, Japan; .,Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Yokohama, Japan
| | - Yukio Maezawa
- Department of Surgery, Yokohama City University, Yokohama, Japan.,Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Haruhiko Cho
- Department of Surgery, Yokohama City University, Yokohama, Japan.,Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Yusuke Saigusa
- Department of Biostatistics, Yokohama City University, Yokohama, Japan
| | - Jun Tamura
- Department of Biostatistics, Yokohama City University, Yokohama, Japan
| | - Kazuhito Tsuchida
- Department of Surgery, Yokohama City University, Yokohama, Japan.,Department of Surgery, Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital, Tokyo, Japan
| | - Keisuke Komori
- Department of Surgery, Yokohama City University, Yokohama, Japan.,Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Yokohama, Japan
| | - Kazuki Kano
- Department of Surgery, Yokohama City University, Yokohama, Japan
| | - Kenki Segami
- Department of Surgery, Yokohama City University, Yokohama, Japan
| | - Kentaro Hara
- Department of Surgery, Yokohama City University, Yokohama, Japan
| | - Kotaro Senuki
- YCU Center for Novel and Exploratory Clinical Trials, Yokohama City University Hospital, Yokohama, Japan
| | - Yoshihiro Suzuki
- YCU Center for Novel and Exploratory Clinical Trials, Yokohama City University Hospital, Yokohama, Japan
| | - Michiyo Yamakawa
- YCU Center for Novel and Exploratory Clinical Trials, Yokohama City University Hospital, Yokohama, Japan
| | - Hiroshi Tamagawa
- Department of Surgery, Yokohama City University, Yokohama, Japan
| | - Takashi Oshima
- Department of Surgery, Yokohama City University, Yokohama, Japan.,Department of Gastrointestinal Surgery, Kanagawa Cancer Center, Yokohama, Japan
| | - Norio Yukawa
- Department of Surgery, Yokohama City University, Yokohama, Japan
| | - Yasushi Rino
- Department of Surgery, Yokohama City University, Yokohama, Japan
| |
Collapse
|
15
|
Wada K, Nakashima Y, Yamakawa M, Hori A, Seishima M, Tanabashi S, Matsushita S, Tokimitsu N, Nagata C. Dietary advanced glycation end products and cancer risk in Japan: from the Takayama study. Cancer Sci 2022; 113:2839-2848. [PMID: 35662347 PMCID: PMC9357612 DOI: 10.1111/cas.15455] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 06/01/2022] [Accepted: 06/02/2022] [Indexed: 11/28/2022] Open
Abstract
Few large epidemiological studies have evaluated the association between dietary advanced glycation end products (AGEs) and cancer risk. We evaluated the relationship between dietary AGE intake and the incidence of total cancer and site‐specific cancers in a population‐based prospective study in Japan. Participants were 14,173 men and 16,549 women who were 35 years of age or older in 1992. Dietary intake was assessed via a validated food frequency questionnaire. Intake of the AGE Nε‐carboxymethyl‐lysine (CML) was estimated using databases of CML content in foods determined using ultraperformance liquid chromatography–tandem mass spectrometry. Cancer incidence was confirmed through regional population‐based cancer registries. During a mean follow‐up period of 13.3 years, 1954 men and 1477 women developed cancer. We did not observe a significant association between CML intake and the risk of total cancer in men or women. In men, compared with the lowest quartile of CML intake, the hazard ratios of liver cancer for the second, third, and highest quartiles were 1.69 (95% CI: 0.92–3.10), 1.48 (95% CI: 0.77–2.84), and 2.10 (95% CI: 1.10–3.98; trend p = 0.04). Conversely, a decreased relative risk of male stomach cancer was observed for the second and highest quartiles of CML intake versus the lowest quartile, with hazard ratios of 0.73 and 0.67, respectively (trend p = 0.08). Our finding on the potential harmfulness of consuming AGEs on liver cancer risk is intriguing and warrants further study.
Collapse
Affiliation(s)
- Keiko Wada
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| | | | - Mitsuru Seishima
- Department of Internal Medicine, Takayama Red Cross Hospital Gifu Japan
| | - Shinobu Tanabashi
- Department of Internal Medicine, Takayama Red Cross Hospital Gifu Japan
| | | | - Naoki Tokimitsu
- Department of Internal Medicine, Takayama Red Cross Hospital Gifu Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine Gifu University Graduate School of Medicine Gifu Japan
| |
Collapse
|
16
|
Mizuno S, Wakabayashi H, Yamakawa M, Wada F, Kato R, Furiya Y, Nishioka S, Momosaki R. Sarcopenia Is Associated with Fecal Incontinence in Patients with Dysphagia: Implication for Anal Sarcopenia. J Nutr Health Aging 2022; 26:84-88. [PMID: 35067708 DOI: 10.1007/s12603-021-1711-6] [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: 12/01/2022]
Abstract
OBJECTIVES To examine the relationship between sarcopenia and fecal incontinence in patients with dysphagia. DESIGN Cross-sectional study using the Japanese sarcopenic dysphagia database. SETTING 19 hospitals including 9 acute care hospitals, 8 rehabilitation hospitals, 2 long-term care hospitals, and 1 home visit rehabilitation center. PARTICIPANTS 460 dysphagic patients, aged 20 years and older. MEASUREMENTS Sarcopenia was diagnosed by the 2019 criteria of the Asian Working Group for Sarcopenia. Fecal incontinence was assessed by health care professionals at baseline according to the definition of the Japanese Practice Guidelines for Fecal Incontinence. We examined whether there was a significant difference between the rate of fecal incontinence in patients with/without sarcopenia. Age, sex, type of dwelling, Barthel index, Charlson comorbidity index (CCI), calf circumference, handgrip strength, body mass index, malnourishment, C-reactive protein level, serum albumin level, and delivery of enteral nutrition by nasogastric and/or gastrostomy tube were measured. To examine the relationship between sarcopenia and fecal incontinence, logistic regression analysis was performed with adjustments for age, sex, sarcopenia, CCI, enteral nutrition, and dwelling. RESULTS The mean age of patients was 81 ± 10 years. Of the 460 study patients, 404 (88%) patients had sarcopenia and 104 had fecal incontinence (23%). The rate of fecal incontinence was higher in the sarcopenia group than the non-sarcopenia group (25% vs. 7%, P = 0.003). Logistic regression analysis showed that sarcopenia was independently associated with fecal incontinence (odds ratio: 3.114, 95% confidence interval: 1.045, 9.282). CONCLUSION The prevalence of fecal incontinence was 23% in patients with dysphagia. Sarcopenia was independently associated with fecal incontinence, which suggests the presence of anal sarcopenia. Defecation control should be assessed in patients with sarcopenia.
Collapse
Affiliation(s)
- S Mizuno
- Hidetaka Wakabayashi, MD, PhD, Department of Rehabilitation Medicine, Tokyo Women's Medical University Hospital, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, Japan. Code; 162-0054, Tel: +81-3-3353-8111, Fax: +81-3-5269-7639, E-mail:
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Nagata C, Wada K, Yamakawa M, Nakashima Y, Koda S, Uji T, Onuma S, Oba S, Maruyama Y, Hattori A. Associations Between Dietary Melatonin Intake and Total and Cause-Specific Mortality Among Japanese Adults in the Takayama Study. Am J Epidemiol 2021; 190:2639-2646. [PMID: 34387322 DOI: 10.1093/aje/kwab213] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 07/29/2021] [Accepted: 07/29/2021] [Indexed: 12/19/2022] Open
Abstract
Potential health benefits of melatonin have been suggested. Although melatonin is present in various foods, little is known about the health effects of dietary melatonin intake. We estimated habitual dietary melatonin intake and examined its association with total and cause-specific mortality in a population-based cohort study in Japan. Study subjects included 13,355 men and 15,724 women aged ≥35 years who responded to a self-administered questionnaire in 1992. Their diets were assessed via a food frequency questionnaire at baseline. The melatonin content in various foods on the questionnaire was measured to estimate melatonin intake. Mortality was ascertained during 16 years of follow-up (1992-2008). Hazard ratios (HRs) and 95% confidence intervals (CIs) for total and cause-specific mortality were calculated according to melatonin quartiles. A total of 5,339 deaths occurred during follow-up. Melatonin intake was significantly associated with decreased risks of total mortality, cardiovascular mortality, and noncancer, noncardiovascular mortality after controlling for covariates; HRs for the highest quartile of melatonin intake versus the lowest were 0.90 (95% CI: 0.82, 0.98; P for trend = 0.05), 0.85 (95% CI: 0.72, 0.99; P for trend = 0.10), and 0.77 (95% CI: 0.67, 0.90; P for trend = 0.003), respectively. The data suggest a potential benefit of dietary melatonin with regard to mortality rates.
Collapse
|
18
|
Uji T, Wada K, Yamakawa M, Koda S, Nakashima Y, Onuma S, Nagata C. Birth month and mortality in Japan: a population-based prospective cohort study. Chronobiol Int 2021; 38:1023-1031. [PMID: 33792442 DOI: 10.1080/07420528.2021.1903482] [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: 10/21/2022]
Abstract
Epidemiologic studies investigating the association between birth season and risk of mortality in adulthood are limited and have yielded inconclusive results. We aimed to examine the relationship between birth month and all-cause and cause-specific mortality, after controlling for potential confounders, including lifestyle and medical factors, in a population-based cohort study in Japan. We included 28,884 subjects (13,262 men and 15,622 women) from Takayama City, aged 35 years or older without cancer, stroke, and ischemic heart disease, who were born in Japan at baseline. Participants who were enrolled in 1992 were followed up for over 16 years. Information including place of birth, lifestyles, and medical history was obtained from a baseline questionnaire. We performed a Cox proportional hazards analysis to determine the association between birth month and all-cause and cause-specific mortality after adjusting for potential confounders. During the follow-up period (mean follow-up: 14.1 years), 5,303 deaths (2,881 men and 2,422 women) were identified. After controlling for multiple covariates, it was found that being born in April or June was associated with an increased risk of all-cause mortality compared to being born in January (hazard ratio [HR] 1.138; 95% confidence interval [CI], 1.006-1.288 and HR 1.169; 95% CI, 1.028-1.329, respectively). The HRs for cardiovascular mortality were significantly higher in participants born in March and May (HR 1.285; 95% CI, 1.056-1.565 and HR 1.293; 95% CI, 1.040-1.608, respectively). Our findings indicate that an individual's birth month may be an indicator of the susceptibility to mortality in later life.
Collapse
Affiliation(s)
- Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sakiko Onuma
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
19
|
Kaway P, Wada K, Yamakawa M, Koda S, Uji T, Oba S, Nagata C. Association Between Anger and Mortality in Women and Men: A Prospective Cohort Study in a Japanese Community. J Womens Health (Larchmt) 2021; 30:1597-1603. [PMID: 33728985 DOI: 10.1089/jwh.2020.8739] [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: 11/13/2022] Open
Abstract
Background: Anger is a common problem in society, and anger's relationship with mortality, in particular with cardiovascular mortality, has been studied mainly in male western population. There are no prospective studies in Japan, about the association between anger and mortality. Materials and Methods: This study examined the association of anger with all-cause and cause-specific mortality in a Japanese community. Data came from the Takayama Study, which recruited residents aged ≥35 years in 1992 from Takayama City in Gifu, Japan. The current study used information on anger that was obtained from the second survey in 2002. A total of 11,902 healthy participants aged ≥45 years completed a self-administered questionnaire. Anger was assessed using the Spielberger Trait Anger Scale. Results: The main causes of deaths during the follow-up period from 2002 to 2013 were 460 for neoplasm, 254 for cardiovascular, and 435 for other causes. After adjusting for potential confounders, we found a significant positive association between the trait anger score and the risk of cardiovascular mortality for women, with a hazard ratio for high versus low score of trait anger of 1.81 (95% confidence interval 0.91-3.63, p for trend = 0.04), but not for men. Conclusions: Data suggest that for Japanese women, high trait anger score may be associated with an increased risk of cardiovascular mortality. Potential gender differences in the association between trait anger and mortality should be further studied from the cultural context.
Collapse
Affiliation(s)
- Patricia Kaway
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Shino Oba
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.,Graduate School of Health Sciences, Gunma University, Gunma, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
20
|
Mizuno S, Wakabayashi H, Fujishima I, Kishima M, Itoda M, Yamakawa M, Wada F, Kato R, Furiya Y, Nishioka S, Momosaki R. Construction and Quality Evaluation of the Japanese Sarcopenic Dysphagia Database. J Nutr Health Aging 2021; 25:926-932. [PMID: 34409973 DOI: 10.1007/s12603-021-1646-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 01/13/2023]
Abstract
OBJECTIVES To describe the activity and evaluate the quality of the Japanese sarcopenic dysphagia database. DESIGN Cohort registry study. SETTING 19 hospitals including 9 acute care hospitals, 8 rehabilitation hospitals, 2 long-term care hospitals, and 1 home visit rehabilitation team. PARTICIPANTS 467 dysphagic patients, aged 20 years and older. MEASUREMENTS The following indices were assessed at baseline: age, sex, main disease, sarcopenic dysphagia, whole body sarcopenia, Food Intake Level Scale (FILS), malnutrition diagnosed by the Global Leadership Initiative on Malnutrition criteria, oral status assessed by the Revised Oral Assessment Guide or the Oral Health Assessment Tool, activities of daily living assessed by the Functional Independence Measure (FIM) or the Barthel Index (BI), Charlson comorbidity index, C-reactive protein and serum albumin levels, dysarthria, hoarseness, aphasia, pressure ulcers, bladder, bowel, and kidney function, respiratory status, polypharmacy, number of drugs, and involvement of health care professionals and rehabilitation nutrition team. FILS, FIM or BI, and outcome including discharge destination were assessed at follow-up. A simple comparison of cases and evaluation of the quality of data were performed. RESULTS The mean age was 80.4 ± 11.4 yr. The variable input error was 0. The number of patients with missing data was high for estimated glomerular filtration rate, C-reactive protein, serum albumin, skeletal mass index, and tongue pressure. The prevalence of either probable, possible, or no sarcopenic dysphagia was 105 (23%), 182 (39%), or 179 (38%), respectively. Doctors including physiatrists, nurses, physical therapists, and registered dietitians were involved with most patients, while the rehabilitation nutrition team was involved in only 16% of patients. CONCLUSIONS The quality of the database was relatively high. Sarcopenic dysphagia is common in patients with dysphagia.
Collapse
Affiliation(s)
- S Mizuno
- Hidetaka Wakabayashi, MD, PhD, Department of Rehabilitation Medicine, Tokyo Women's Medical University Hospital, 8-1, Kawada-cho, Shinjuku-ku, Tokyo, Japan. Code; 162-0054, Tel: +81-3-3353-8111, Fax: +81-3-5269-7639, E-mail:
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
21
|
Nagata C, Wada K, Yamakawa M, Nakashima Y, Koda S, Uji T, Oba S. Dietary Intake of Nε-carboxymethyl-lysine, a Major Advanced Glycation End Product, is Not Associated with Increased Risk of Mortality in Japanese Adults in the Takayama Study. J Nutr 2020; 150:2799-2805. [PMID: 32840609 DOI: 10.1093/jn/nxaa230] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2020] [Revised: 01/30/2020] [Accepted: 07/09/2020] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Although endogenous advanced glycation end products (AGEs) have been implicated in the development of various chronic diseases, whether AGEs in foods represent a risk to human health remains unknown. OBJECTIVES We aimed to estimate the intake of Nε-carboxymethyl-lysine (CML), a major AGE product, using a database of CML contents on LC-MS methods, and to examine CML's association with total and cause-specific mortality in Japanese adults. METHODS The analysis included 13,355 men and 15,724 women, aged 35 years and older, from the Takayama study. They responded to a self-administered questionnaire in 1992. Their diet, including the CML intake, was assessed using a food-frequency questionnaire at baseline. Mortality was ascertained during 16 years of follow-up. HRs and 95% CIs for mortality were estimated separately for men and women according to CMI quartiles. RESULTS We noted 2901 deaths in men and 2438 deaths in women during the follow-up. In men, as compared with the lowest quartile of intake, the highest quartile of CML was inversely associated with the risks of both total and non-cancer, non-cardiovascular disease mortality after controlling for covariates [HR = 0.89 (95% CI, 0.79-1.00; P-trend = 0.047) and HR = 0.74 (95% CI, 0.58-0.94; P-trend = 0.03), respectively]. However, stratified analyses showed both inverse and positive associations between CML intake and cause-specific mortality in women, depending on their characteristics. For example, years of education had a modifying effect on both the CML intake and non-cancer, non-cardiovascular disease mortality in women. In men, the associations of CML intake with mortality depended on food sources. CONCLUSIONS Overall, the present study does not support a positive association between CML intake and mortality in Japanese adults. The potential relevance of the food source of CML to the link between dietary CML and mortality warrants further attention.
Collapse
Affiliation(s)
- Chisato Nagata
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuma Nakashima
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takahiro Uji
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Shno Oba
- Department of Epidemiology & Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.,Graduate School of Health Sciences, Gunma University, Gunma, Japan
| |
Collapse
|
22
|
Yamakawa M, Tokinobu A, Tanaka Y, Matsushita N, Hashizume M. Missed opportunities for measles vaccination among departing travelers from Japan to India. J Travel Med 2020; 27:5625776. [PMID: 31728514 DOI: 10.1093/jtm/taz086] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/14/2019] [Accepted: 08/27/2019] [Indexed: 11/14/2022]
Abstract
Measles vaccination among Japanese backpackers in India
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu 501-1194, Japan.,Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Akiko Tokinobu
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8558, Japan
| | - Yuko Tanaka
- Graduate School of Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan
| | - Naohiko Matsushita
- Department of Paediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| | - Masahiro Hashizume
- Department of Paediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki 852-8523, Japan
| |
Collapse
|
23
|
Yamakawa M, Wada K, Koda S, Mizuta F, Uji T, Oba S, Nagata C. High Intake of Free Sugars, Fructose, and Sucrose Is Associated with Weight Gain in Japanese Men. J Nutr 2020; 150:322-330. [PMID: 31532489 DOI: 10.1093/jn/nxz227] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 06/28/2019] [Accepted: 08/26/2019] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND Available evidence for associations between sugar intake and body weight is largely from short-term controlled trials and studies focusing on sugar-sweetened beverages. Studies on long-term weight change related to the intake of types of sugar are thus needed. OBJECTIVE We examined the associations between weight change and the intake of various types of carbohydrates, including starch, total sugars, and free or naturally occurring sugars and saccharides (i.e., glucose, fructose, sucrose, and lactose), among Japanese men and women. METHODS This prospective cohort study included 14,971 residents of Takayama City in Japan who were aged 35-69 y at the first survey in 1992 and responded to a self-administrated questionnaire at the second survey in 2002. We excluded those with cancer, coronary artery disease, stroke, or diabetes on the first survey and those with missing information about body weight on both surveys, leaving 13,229 participants for analysis (5879 men and 7350 women). Mean (95% CI) values of 10-y weight change according to types of carbohydrates were estimated using linear regression models with adjustment for total energy intake and other dietary and lifestyle factors. Dietary intake was assessed at the first survey using a validated FFQ. RESULTS Among men, free sugar intake was associated with weight gain and the estimated means (95% CIs) of weight change were -0.60 (-0.67, -0.54), -0.31 (-0.38, -0.24), -0.12 (-0.19, -0.05), and 0.20 (0.13, 0.27) kg from the first to fourth quartiles (P-trend = 0.002). Moreover, high intakes of sucrose and fructose were associated with weight gain (P-trend: 0.018 for sucrose and 0.001 for fructose). Among women, the intake of any type of carbohydrate was not significantly associated with weight change. CONCLUSIONS These results suggested that high intakes of free sugars, sucrose, and fructose were associated with long-term weight gain among Japanese men.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.,Department of Human Nutrition, Sugiyama Jogakuen University, Aichi, Japan
| | - Fumi Mizuta
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan.,Department of Nutrition, Shubun University, Aichi, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Shino Oba
- Gunma University Graduate School of Health Sciences, Gunma, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
24
|
Taguchi C, Kishimoto Y, Fukushima Y, Kondo K, Yamakawa M, Wada K, Nagata C. Correction to: Dietary intake of total polyphenols and the risk of all-cause and specific-cause mortality in Japanese adults: the Takayama study. Eur J Nutr 2019; 59:1273. [PMID: 31828472 PMCID: PMC7098928 DOI: 10.1007/s00394-019-02155-6] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The original version of this article unfortunately contained a mistake.
Collapse
Affiliation(s)
- Chie Taguchi
- Endowed Research Department 'Food for Health', Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan
| | - Yoshimi Kishimoto
- Endowed Research Department 'Food for Health', Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.
| | | | - Kazuo Kondo
- Endowed Research Department 'Food for Health', Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.,Faculty of Food and Nutritional Sciences, Toyo University, Gunma, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
25
|
Liu Y, Mitsuhashi T, Yamakawa M, Sasai M, Tsuda T, Doi H, Hamada J. Combined effects of body mass index and unhealthy behaviors on disability in older Japanese adults: the Okayama study. PeerJ 2019; 7:e8146. [PMID: 31803538 PMCID: PMC6886483 DOI: 10.7717/peerj.8146] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 07/09/2019] [Accepted: 11/03/2019] [Indexed: 11/22/2022] Open
Abstract
Background Body mass index (BMI) is a significant predictor of functional disability in older adults. However, when evaluated, the association between BMI and incident functional disability, considering behaviors only as covariates or not, may not be appropriate. The primary purpose of the study was to investigate the combined effects of BMI and unhealthy behaviors on the risk of incident functional disability. Methods This was a retrospective cohort study that took place in Okayama City, Japan. Data on BMI and unhealthy behaviors were obtained using the health check-up questionnaire. The certification of Long-Term Care Insurance was used to measure functional disability. Cox proportional hazard models were used; adjusted hazard ratios (HRs) with 95% confidence interval (CI) were calculated for incidence of functional disability across categories of BMI and number of unhealthy behaviors. Results The relationship between BMI and incident functional disability was U-shaped (HR = 1.18, 95% CI [1.11–1.25], among the underweight range; and 1.26 [1.19–1.34] among the obesity range), and its risk was significantly higher within the normal-to-overweight range of BMI values with co-occurring unhealthy behaviors (with normal weight range and one, 1.17 [1.01–1.21]; two, 1.29 [1.18–1.41]; and three or four unhealthy behaviors 1.38 [1.24–1.54]; as well as among overweight range and one, 1.16 [1.05–1.27]; two, 1.26 [1.15–1.38]; and three or four unhealthy behaviors, 1.47 [1.31–1.64]). In each BMI category, the risk of incident functional disability increased with increasing number of unhealthy behaviors (p < 0.05 for linear tread), with the highest risk (1.87 [1.58–2.20]) occurring in combination with at least three unhealthy behaviors with BMI ≥ 27.5, for both sexes (2.20 [1.64–2.92] in men and 1.66 [1.35–2.04] in women). Conclusion It is necessary to consider the combined effects of BMI and behaviors on incident functional disability. Furthermore, interventions targeting multiple behaviors should be considered as such interventions may offer greater benefits than simple interventions.
Collapse
Affiliation(s)
- Yangyang Liu
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Toshiharu Mitsuhashi
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama University, Okayama, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Megumi Sasai
- Sri Lanka Office, Japan International Cooperation Agency, Colombo, Sri Lanka
| | - Toshihide Tsuda
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Jun Hamada
- Department of Health Economics and Policy, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| |
Collapse
|
26
|
Liu Y, Mitsuhashi T, Yamakawa M, Sasai M, Tsuda T, Doi H, Hamada J. Physical activity and incident dementia in older Japanese adults: The Okayama study. Int J Geriatr Psychiatry 2019; 34:1429-1437. [PMID: 31050010 DOI: 10.1002/gps.5135] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 09/09/2018] [Accepted: 04/19/2019] [Indexed: 01/15/2023]
Abstract
OBJECTIVE To evaluate the association between regular physical activity and the risk of incident dementia in older Japanese adults. METHODS This was a retrospective cohort study performed in Okayama City, Japan. Overall, 51 477 older Japanese adults were followed from 2008 to 2014. A health checkup questionnaire was used to assess regular physical activity. The Dementia Scale of long-term care insurance was used as a measure of incident dementia. Cox proportional hazard models were used to calculate adjusted hazard ratios, with their 95% confidence intervals, for the incidence of dementia across the categories of physical activity. RESULTS During a 7-year follow-up, 13 816 subjects were considered as having incident dementia. Compared with participants who performed physical activity less than or equal to one time per week, the multivariate adjusted hazard ratio values (95% confidence intervals) for participants who performed physical activity greater than or equal to two times per week but not every day and those who performed physical activity every day were 0.79 (0.75-0.84) and 0.94 (0.89-0.98), respectively. The interaction of physical activity and sex was statistically significant (P < .01). In subgroup analysis, the multivariate-adjusted hazard ratio values (95% confidence intervals) remained low, at 0.76 (0.70-0.84) in males and 0.81 (0.76-0.87) in females who performed physical activity greater than or equal to two times per week but not every day; they were 0.82 (0.76-0.89) in males and 1.01 (0.95-1.07) in females who performed physical activity every day. CONCLUSIONS Regular physical activity could reduce the risk of incident dementia in older Japanese adults, except females who performed physical activity every day.
Collapse
Affiliation(s)
- Yangyang Liu
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okoyama, Japan
| | - Toshiharu Mitsuhashi
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okoyama, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Megumi Sasai
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, Okoyama, Japan
| | - Toshihide Tsuda
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, Okoyama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okoyama, Japan
| | - Jun Hamada
- Department of Health Economics and Policy, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okoyama, Japan
| |
Collapse
|
27
|
Wada K, Yamakawa M, Konishi K, Goto Y, Mizuta F, Koda S, Uji T, Tamura T, Nakamura K, Tsuji M, Nagai H, Itakura N, Harada K, Takahara O, Yamanaka H, Nagata C. Associations of Cell Phone Use and Screen Viewing with Overweight in Children. Child Obes 2019; 15:417-425. [PMID: 31298567 DOI: 10.1089/chi.2018.0312] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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] [Indexed: 12/17/2022]
Abstract
Background: Effects of using mobile devices on childhood obesity have not been well studied. We aimed to ascertain whether cell phone use and screen viewing are associated with excess body weight in a cross-sectional study of Japanese school children. Methods: Subjects were 3141 students, ages 6 to 7 years, who participated in the Hekinan Children's Study conducted during 2011-2015. Participants were asked to submit a parent-administered questionnaire on child and parent demographics, health status, and lifestyles, including cell phone use and screen time. Heights and weights were measured at the schools. Being overweight was defined according to the cutoff point for children specified by the Extended International Obesity Task Force. Among 2596 analytic children, the odds ratios (ORs) for being overweight were estimated according to cell phone use, time spent watching television, and time spent on games and computers using the logistic regression models. Analyses were conducted after adjustments for potential confounders, including dietary intake, physical activities, sleep duration, and quality of sleep. Results: After multivariate adjustments, cell phone users were found to have an OR of 1.74 for being overweight compared with nonusers. Cell phone use of longer duration was associated with higher risk of being overweight (trend p = 0.018). Time spent watching television was positively associated with the risk of being overweight (trend p = 0.003). Conclusions: Just as earlier studies have shown for television viewing, cell phone use might be a risk factor related to being overweight among children.
Collapse
Affiliation(s)
- Keiko Wada
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Kie Konishi
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Yuko Goto
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Fumi Mizuta
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Takashi Tamura
- Department of Preventive Medicine, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Kozue Nakamura
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan.,Gifu City Healthcare Center, Gifu, Japan
| | - Michiko Tsuji
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan.,Department of Food Science and Nutrition, Nagoya Women's University, Nagoya, Japan
| | | | | | - Kou Harada
- Hekinan Medical Association, Hekinan, Japan
| | | | | | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| |
Collapse
|
28
|
Nagata C, Wada K, Sahashi Y, Tamura T, Konishi K, Goto Y, Yamakawa M, Koda S, Mizuta F, Uji T, Nakamura K, Tsuji M, Nagai H, Itakura N, Harada K, Takahara O, Yamanaka H. The Hekinan Children's Study: Design and Profile of Participants at Baseline. J Epidemiol 2019; 29:272-277. [PMID: 30344192 PMCID: PMC6556436 DOI: 10.2188/jea.je20180005] [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] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 06/24/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The early life environment is now recognized as a key factor contributing to susceptibility to certain diseases in later life. METHODS We initiated a cohort study among school children in 2011 to primarily investigate the associations between lifestyle and environmental factors and some surrogate markers of chronic diseases, such as cardiometabolic risk factors (ie, obesity, high blood pressure, high blood glucose, insulin, or lipids) and cancer risk factors (ie, height and age at menarche). A baseline questionnaire asked for information, including demographic variables, medical history and use of medication, dietary habits, physical activity, sleep habits, and behavioral and emotional problems of children. Follow-up surveys are planned for the fourth grade of elementary school and the first grade of junior high school. At these follow-up surveys, fasting blood samples will be obtained to measure cardiometabolic markers. We also checked the validity of a food frequency questionnaire, which was originally created for 6-year-olds but was modified for use in older children. RESULTS A total of 3,141 first-year students at elementary schools in Hekinan City, Aichi Prefecture, participated in the study. The response rate was 87.4%. The means of age and body mass index were 6.99 (standard deviation, 0.28) years and 15.3 (standard deviation, 1.7) kg/m2, respectively, in the 3,067 Japanese children (1,639 boys and 1,428 girls). CONCLUSIONS This cohort will reveal determinants of cardiometabolic risk factors and cancer risk factors during childhood.
Collapse
Affiliation(s)
- Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yukari Sahashi
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takashi Tamura
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Preventive Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kie Konishi
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Yuko Goto
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Fumi Mizuta
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kozue Nakamura
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Food and Nutrition, Gifu City Women’s College, Gifu, Japan
| | - Michiko Tsuji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan
- Department of Food Science and Nutrition, Nagoya Women’s University, Nagoya, Japan
| | | | | | - Kou Harada
- Hekinan Medical Association, Hekinan, Aichi, Japan
| | | | | |
Collapse
|
29
|
Konishi K, Wada K, Yamakawa M, Goto Y, Mizuta F, Koda S, Uji T, Tsuji M, Nagata C. Dietary Soy Intake Is Inversely Associated with Risk of Type 2 Diabetes in Japanese Women but Not in Men. J Nutr 2019; 149:1208-1214. [PMID: 31079144 DOI: 10.1093/jn/nxz047] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [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: 09/12/2018] [Revised: 10/24/2018] [Accepted: 02/26/2019] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Whole soy foods, as well as their components, including protein and isoflavones, have garnered attention because they may have beneficial effects against diabetes. OBJECTIVES We examined associations between the intake of soy foods, soy protein, and soy isoflavones and the risk of diabetes in the Japanese population. METHODS This prospective cohort study included 13,521 residents (5883 men and 7638 women; 35-69 y old) of Takayama City, Japan. The subjects responded to a self-administered baseline questionnaire in 1992 and to a follow-up questionnaire seeking information about diabetes in 2002. Their mean ± SD body mass index was 22.6 ± 2.6 kg/m2 (men) and 22.1 ± 2.7 (women). The intakes of total soy foods, fried soy foods, nonfried soy foods, soy protein, and soy isoflavones were estimated through the use of a validated food-frequency questionnaire administered in 1992. Associations between soy intake and the risk of diabetes were evaluated through the use of Cox proportional hazards models incorporating age, education level, physical activity, smoking status, alcohol consumption, history of hypertension, use of vitamin supplements, menopausal status, and dietary factors including glycemic load, total energy, total fat, meat, fruit, vegetables, and coffee. RESULTS During a 10-y follow-up, 438 participants reported physician-diagnosed diabetes. Women in the highest tertile of intakes of total soy foods, fried soy foods, nonfried soy foods, soy protein, and soy isoflavone had significantly lower HRs, after controlling for covariates, than those with the lowest intakes. For example, HRs were 0.45 (95% CI: 0.30, 0.68; P-trend <0.001) for total soy food intake. In men, there were no significant associations between soy intake and the risk of diabetes. CONCLUSIONS These results suggest that a high soy intake may be associated with a lower risk of diabetes in Japanese women.
Collapse
Affiliation(s)
- Kie Konishi
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Yuko Goto
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Fumi Mizuta
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| | - Michiko Tsuji
- Department of Food Science and Nutrition, Nagoya Women's University, Nagoya, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu, Japan
| |
Collapse
|
30
|
Liu Y, Mitsuhashi T, Yamakawa M, Sasai M, Tsuda T, Doi H, Hamada J. Alcohol consumption and incident dementia in older Japanese adults: The Okayama Study. Geriatr Gerontol Int 2019; 19:740-746. [PMID: 31173440 DOI: 10.1111/ggi.13694] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [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: 10/26/2018] [Revised: 04/03/2019] [Accepted: 04/23/2019] [Indexed: 11/30/2022]
Abstract
AIM To evaluate the association between the amount and frequency of alcohol consumption and incident dementia in older Japanese adults using large sample size data over a long follow-up period. METHODS This was a retrospective cohort study carried out in Japan. A total of 53 311 older adults were followed from 2008 to 2014. A health checkup questionnaire was used to assess the amount and frequency of alcohol consumption. The Dementia Scale of long-term care insurance was used as a measure of incident dementia. Cox proportional hazards models were used to calculate adjusted hazard ratios, with their 95% confidence intervals, for the incidence of dementia across the categories of alcohol consumption by sex. RESULTS During a 7-year follow-up period, 14 479 participants were regarded as having incident dementia. Compared with non-drinkers, the multivariate adjusted hazard ratios for participants with alcohol consumption ≤2 units per day, occasionally (0.88, 95% CI 0.81-0.96 in men and 0.84, 95% 0.79-0.90 in women) and daily (0.79, 95% 0.73-0.85 in men and 0.87, 95% 0.78-0.97 in women) were statistically significant, and the difference between occasional and daily consumption was only statistically significant in men; however, for participants with alcohol consumption >2 units per day, occasionally (0.91, 95% 0.71-1.16 in men and 1.09, 95% 0.72-1.67 in women) and daily (0.89, 95% 0.81-1.00 in men and 1.16, 95% 0.84-1.81 in women) were not significant. CONCLUSIONS Alcohol consumption of ≤2 units per day, occasionally or daily, could reduce the risk of incident dementia, with greater benefit for men with such daily consumption. Geriatr Gerontol Int 2019; 19: 740-746.
Collapse
Affiliation(s)
- Yangyang Liu
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Toshiharu Mitsuhashi
- Center for Innovative Clinical Medicine, Okayama University Hospital, Okayama, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Graduate School of Medicine, Gifu University, Gifu, Japan
| | - Megumi Sasai
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Toshihide Tsuda
- Department of Human Ecology, Graduate School of Environmental and Life Science, Okayama University, Okayama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Jun Hamada
- Department of Health Economics and Policy, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| |
Collapse
|
31
|
Yamakawa M, Tanaka Y, Sasai M. Health risk management behaviors and related factors among Japanese university students participating in short-term study abroad programs. J Infect Chemother 2019; 25:866-872. [PMID: 31105000 DOI: 10.1016/j.jiac.2019.04.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 12/29/2018] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 11/16/2022]
Abstract
BACKGROUND Overseas travelers should prepare for health problems at their destinations prior to travel. No prospective studies have evaluated factors related to health risk management behaviors among overseas travelers, specifically young travelers. METHODS We prospectively collected data from pre- and post-travel questionnaire surveys, targeting students of a university in Japan who participated in short-term study abroad programs (n = 532, 6 to 38 travel days and 11 countries). We examined health information collection, receipt of travel vaccinations for the programs and medical kit preparation as health risk management behavior outcomes and their related factors among the participants (82.7% follow-up rate). RESULTS In total, 17.5%, 8.0% (28.6% in Southeast Asia) and 68.9% of participants, respectively, collected travel health information via the Japanese or foreign official websites, received travel vaccinations and carried commonly used medicines. Female, travel experience to study destination, parental medical occupation and presence of illness in treatment were positively associated with the health risk management behaviors after adjusting for the covariates including study destination. For example, the adjusted odds ratio (OR) (95% confidence interval [CI]) of receiving travel vaccinations was 4.16 (1.70-10.2) for parental medical occupation relative to non-medical occupation. The adjusted OR (95% CI) of collecting travel health information was 2.54 (1.04-6.21) for travel experience to study destination relative to no overseas travel experience. CONCLUSIONS Personal characteristics including overseas travel experience and parental occupation provide a useful insight into approaches to promoting health risk management among university students traveling abroad.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Gifu, Japan, 1-1 Yanagido, Gifu, 501-1194, Japan; Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Yuko Tanaka
- Graduate School of Engineering, Nagoya Institute of Technology, Nagoya, Japan, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan.
| | - Megumi Sasai
- Sri Lanka Office, Japan International Cooperation Agency No.42, Nawan Mawatha, Colombo 02, Sri Lanka.
| |
Collapse
|
32
|
Tokinobu A, Yamakawa M, Tsuda T, Matsushita N, Hashizume M. Japanese tourists travelling in India have poor pre-travel preparedness. Travel Med Infect Dis 2019; 33:101417. [PMID: 31063832 DOI: 10.1016/j.tmaid.2019.05.003] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/26/2019] [Accepted: 05/03/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Akiko Tokinobu
- Department of Primary Care and Medical Education, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, 2-5-1 Shikata-cho, Kita-ku, Okayama, 700-8558, Japan.
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan.
| | - Toshihide Tsuda
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, 3-1-1 Tsushima-naka, Kita-ku, Okayama, 700-8530, Japan.
| | - Naohiko Matsushita
- Department of Paediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.
| | - Masahiro Hashizume
- Department of Paediatric Infectious Diseases, Institute of Tropical Medicine, Nagasaki University, 1-12-4 Sakamoto, Nagasaki, 852-8523, Japan.
| |
Collapse
|
33
|
Goto Y, Wada K, Uji T, Koda S, Mizuta F, Yamakawa M, Nagata C. Number of Teeth and All-Cause and Cancer Mortality in a Japanese Community: The Takayama Study. J Epidemiol 2019; 30:213-218. [PMID: 31006716 PMCID: PMC7153964 DOI: 10.2188/jea.je20180243] [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] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The association between the number of teeth and mortality among community-dwelling people has been examined in many epidemiological studies. However, few Japanese studies have included cancer mortality as an endpoint. We prospectively investigated the association between number of remaining teeth and all-cause and cancer mortality in a Japanese community. METHODS This study included participants in the Takayama Study who were aged 35-70 years old at baseline in 1992. Information on the number of remaining teeth was obtained from 11,273 participants via questionnaire at the second survey in 2002. The response rate was 66.9%. Deaths and their causes were ascertained during 11.8 years of follow-up. RESULTS A total of 1,098 deaths (435 cancer-related and 235 cardiovascular-related) were identified during the follow-up period. After adjusting for covariates, participants with 0 to 9 teeth were at moderate but significantly increased risk of all-cause mortality (hazard ratio [HR] 1.19; 95% confidence interval [CI], 1.03-1.39) and cancer mortality (HR 1.31; 95% CI, 1.03-1.67) compared to those with 20 or more teeth. With regard to cancer site, a significant association was observed for lung cancer (HR for 0-9 teeth vs. 20 or more teeth, 1.75; 95% CI, 1.08-2.83). This association was somewhat strengthened among never-smokers (HR 3.56; 95% CI, 1.02-12.45). CONCLUSIONS We observed that a lower number of remaining teeth was significantly associated with increased risk from all-cause and lung cancer mortality. Further studies on the number of teeth and lung and other types of cancer are needed.
Collapse
Affiliation(s)
- Yuko Goto
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Fumi Mizuta
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine
| |
Collapse
|
34
|
Goto Y, Wada K, Konishi K, Uji T, Koda S, Mizuta F, Yamakawa M, Watanabe K, Ando K, Ueyama J, Kondo T, Nagata C. Association between exposure to household smoking and dental caries in preschool children: a cross-sectional study. Environ Health Prev Med 2019; 24:9. [PMID: 30684963 PMCID: PMC6347787 DOI: 10.1186/s12199-019-0764-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Accepted: 01/17/2019] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND We aimed to examine the association of exposure to environmental tobacco smoke with dental caries among preschool children. Exposure to environmental tobacco smoke was assessed in terms of urinary cotinine concentrations and pack-years of exposure to smoking by parents and other family members at home. METHODS This cross-sectional study included 405 preschool children aged 3-6 years from two preschools in Japan in 2006. Information on the smoking habits of family members living with the child was obtained from parent-administered questionnaires. Dental examination was conducted to assess dental caries, that is, decayed and/or filled teeth. Urinary cotinine levels were measured using first-void morning urine samples. RESULTS Overall, 31.1% of the children had dental caries, and 29.5% had decayed teeth. Exposure to current maternal and paternal smoking was positively associated with the presence of dental caries after controlling for covariates. More than three pack-years of exposure to maternal smoking and more than five pack-years of exposure to smoking by all family members were significantly associated with the presence of dental caries as compared with no exposure (odds ratio [OR] = 5.55, 95% confidence interval [CI] = 2.17-14.22, P for trend < 0.001 and OR = 2.00, 95% CI = 1.12-3.58, P for trend = 0.004, respectively). These exposure variables were similarly associated with the presence of decayed teeth (OR = 2.92, 95% CI = 1.23-6.96, P for trend = 0.01 and OR = 1.75, 95% CI = 0.96-3.20, P for trend = 0.03, respectively). As compared with lowest tertile of the urinary cotinine level, the highest tertile of the urinary cotinine level was significantly associated with the presence of dental caries as well as decayed teeth; the ORs for the highest vs. lowest tertile of urinary cotinine levels were 3.10 (95% CI = 1.71-5.63, P for trend = 0.012) and 2.02 (95% CI = 1.10-3.70, P for trend = 0.10), respectively. CONCLUSIONS These data suggest that exposure to tobacco smoke may have a dose-dependent influence on the development of caries.
Collapse
Affiliation(s)
- Yuko Goto
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan.
| | - Keiko Wada
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Kie Konishi
- Department of Health and Welfare, Tokai Gakuin University, Gifu, Japan
| | - Takahiro Uji
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Sachi Koda
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Fumi Mizuta
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| | - Kaori Watanabe
- Department of Life and Culture, Aichi Bunkyo Women's College, Inazawa, Aichi, Japan
| | - Kyoko Ando
- Department of Life and Culture, Aichi Bunkyo Women's College, Inazawa, Aichi, Japan
| | - Jun Ueyama
- Department of Pathophysiological Laboratory Sciences, Field of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Takaaki Kondo
- Department of Pathophysiological Laboratory Sciences, Field of Radiological and Medical Laboratory Sciences, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan
| | - Chisato Nagata
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
| |
Collapse
|
35
|
Tokinobu A, Yorifuji T, Yamakawa M, Tsuda T, Doi H. Association of early daycare attendance with allergic disorders in children: a longitudinal national survey in Japan. Arch Environ Occup Health 2018; 75:18-26. [PMID: 30595111 DOI: 10.1080/19338244.2018.1535481] [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] [Indexed: 06/09/2023]
Abstract
The association between early daycare attendance and risk of allergic diseases remains inconclusive. Therefore, we examined the association among Japanese children on a long-term basis using a nationwide longitudinal survey data. We estimated the association between daycare attendance at age 6 or 18 months and allergy development using information on outpatient visits for atopic dermatitis (AD), food allergy (FA), and asthma and admission for asthma up to 12 years of age as a proxy for developing these diseases, with multilevel logistic regression. Early daycare attendance was associated with increased odds of AD at ages 2.5-3.5 years: the adjusted odds ratio (OR) was 1.34 [95% CI: 1.21, 1.47]. The association with FA was equivocal. The odds of asthma was increased before age 3.5 years and afterwards decreased: the adjusted ORs were 1.60 [1.44, 1.77] for ages 1.5-2.5 years and 0.77 [0.69, 0.87] for ages 5.5-7 years. The effect of early daycare attendance depends on the type of allergies.
Collapse
Affiliation(s)
- Akiko Tokinobu
- Department of Primary Care and Medical Education, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| | - Takashi Yorifuji
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Kita-ku, Okayama, Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine, Gifu University Graduate School of Medicine, Yanagido, Gifu City, Japan
| | - Toshihide Tsuda
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Kita-ku, Okayama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Kita-ku, Okayama, Japan
| |
Collapse
|
36
|
Kato T, Yorifuji T, Yamakawa M, Inoue S. National data showed that delayed sleep in six-year-old children was associated with excessive use of electronic devices at 12 years. Acta Paediatr 2018; 107:1439-1448. [PMID: 29385278 DOI: 10.1111/apa.14255] [Citation(s) in RCA: 4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 01/14/2018] [Accepted: 01/26/2018] [Indexed: 11/27/2022]
Abstract
AIM Cross-sectional studies have shown associations between adolescent sleep problems and the use of electronic devices, such as mobile phones, but longitudinal studies remain scarce. We explored any association between delayed bedtimes at six years old and the excessive use of electronic devices at 12 years of age. Texting was a prime focus. METHODS We analysed 9607 adolescents who owned mobile phones in 2013 using the Japanese Longitudinal Survey of Newborns in the 21st Century, which started in 2001. The outcomes were daily excessive use of a mobile phone, television (TV) and video games. RESULTS Delayed bedtime at the age of six years was associated with excessive texting at weekends. The adjusted odds ratios and 95% confidence intervals obtained from logistic regression analyses were 1.88 (1.14-3.10) for the 10-11 pm group and 1.98 (1.08-3.63) for the after 11 pm group, compared with the before 9 pm group. Later bedtimes were also associated with increased risks of excessive TV viewing and video game use. CONCLUSION Our study indicated that six-year-olds who regularly stayed up late at night used electronic devices more frequently, or for longer, at the age of 12. Parents need to be more aware of links between sleep issues and electronic devices.
Collapse
Affiliation(s)
- Tsuguhiko Kato
- Department of Social Medicine; National Center for Child Health and Development; Tokyo Japan
| | - Takashi Yorifuji
- Department of Human Ecology; Okayama University Graduate School of Environmental and Life Science; Okayama Japan
| | - Michiyo Yamakawa
- Department of Epidemiology and Preventive Medicine; Gifu University Graduate School of Medicine; Gifu Japan
| | - Sachiko Inoue
- Department of Nursing Science; Okayama Prefectural University Graduate School of Health and Welfare Science; Okayama Japan
| |
Collapse
|
37
|
Yamakawa M, Sasai M, Kasai Y, Tsuda T, Suzuki E. Diarrhea and related factors among passengers on world cruises departing from Japan. Travel Med Infect Dis 2018; 23:56-63. [DOI: 10.1016/j.tmaid.2018.01.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 12/08/2017] [Accepted: 01/17/2018] [Indexed: 11/28/2022]
|
38
|
Tanimoto S, Yayama S, Suto S, Matoba K, Kajiwara T, Inoue M, Endo Y, Yamakawa M, Makimoto K. Self-harm and Suicide Attempts in a Japanese Psychiatric Hospital. East Asian Arch Psychiatry 2018; 28:23-27. [PMID: 29576553] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Self-harm and attempted suicide are risk factors for suicide in psychiatric hospital in-patients. This study aimed to analyse the circumstances of self-harm and suicide attempts in a Japanese psychiatric hospital so as to improve management and care. METHODS Incident reports of self-harm and suicide attempts during a 12.4-year period from November 2000 to March 2013 were reviewed. A descriptive analysis was conducted in terms of age, sex, and diagnosis of patients, as well as level, ward, situations, and causes of incidents. RESULTS During the study period, 90 cases of self-harm and attempted suicide involving 58 patients were reported. The rate of self-harm and suicide attempts was 0.05 per 1000 patient-days. The types of selfharm and suicide attempts included hanging (n = 25), wrist cutting (n = 19), ingestion of foreign objects (n = 17), and others (n = 29). The single case of completed suicide involved hanging, in a patient with schizophrenia. Among 55 patients with relevant data, the most common clinical diagnosis was mood disorder (41.8%), followed by schizophrenia (36.4%). Mood disorder was 3.5 times as prevalent in females as in males (14 vs. 4). Fourteen patients with mood disorder (n = 8) or schizophrenia (n = 6) were repeatedly involved in 46 of 89 cases of self-harm or attempted suicide; 11 were female. One woman with mood disorder attempted suicide 9 times within the same year. The top 3 management and care factors related to self-harm and suicide attempts were failure to adhere to preventive procedures (28%), insufficient therapeutic communication (28%), and difficulty in predicting suicide (20%). CONCLUSION Self-harm and suicide attempts at this psychiatric hospital occurred at a rate of 0.05 per 1000 patient-days between late 2000 and early 2013. Efforts are needed to increase compliance with suicide prevention procedures and therapeutic communication, so as to improve management and care of psychiatric in-patients and prevent them from committing suicide.
Collapse
Affiliation(s)
- S Tanimoto
- Department of Nursing, Ishikawa Prefectural Nursing University, Ishikawa, Japan
| | - S Yayama
- Department of Nursing, Kyoto Gakuen University, Kyoto, Japan
| | - S Suto
- Department of Community Medicine, Nara Medical University, Nara, Japan
| | - K Matoba
- Department of Nursing, Osaka Aoyama University, Osaka, Japan
| | - T Kajiwara
- Department of Nursing, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - M Inoue
- School of Human Services and Social Work, Griffith University, Queensland, Australia
| | - Y Endo
- Department of Nursing, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - M Yamakawa
- Department of Nursing, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - K Makimoto
- School of Nursing of Rehabilitation, Konan Women's University, Hyogo, Japan
| |
Collapse
|
39
|
Yanase T, Kato T, Hayama Y, Akiyama M, Itoh N, Horiuchi S, Hirashima Y, Shirafuji H, Yamakawa M, Tanaka S, Tsutsui T. Transition of Akabane virus genogroups and its association with changes in the nature of disease in Japan. Transbound Emerg Dis 2017; 65:e434-e443. [DOI: 10.1111/tbed.12778] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Indexed: 12/22/2022]
Affiliation(s)
- T. Yanase
- Kyushu Research Station; National Institute of Animal Health; NARO; Kagoshima Japan
| | - T. Kato
- Kyushu Research Station; National Institute of Animal Health; NARO; Kagoshima Japan
| | - Y. Hayama
- Division of Viral Disease and Epidemiology; National Institute of Animal Health; NARO; Ibaraki Japan
| | - M. Akiyama
- Eastern Center for Livestock Hygiene Service; Hiroshima Japan
| | - N. Itoh
- Western Center for Livestock Hygiene Service; Hiroshima Japan
| | - S. Horiuchi
- Miyazaki Livestock Hygiene Service Center; Miyazaki Japan
| | - Y. Hirashima
- Kagoshima Central Livestock Hygiene Service Center; Kagoshima Japan
| | - H. Shirafuji
- Kyushu Research Station; National Institute of Animal Health; NARO; Kagoshima Japan
| | - M. Yamakawa
- Exotic Disease Research Station; National Institute of Animal Health; NARO; Tokyo Japan
| | - S. Tanaka
- Kyushu Research Station; National Institute of Animal Health; NARO; Kagoshima Japan
| | - T. Tsutsui
- Division of Viral Disease and Epidemiology; National Institute of Animal Health; NARO; Ibaraki Japan
| |
Collapse
|
40
|
Yamakawa M, Yorifuji T, Kato T, Tsuda T, Doi H. Maternal smoking location at home and hospitalization for respiratory tract infections among children in Japan. Arch Environ Occup Health 2017; 72:343-350. [PMID: 27808663 DOI: 10.1080/19338244.2016.1255582] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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: 07/07/2016] [Accepted: 10/27/2016] [Indexed: 06/06/2023]
Abstract
We examined the effects of maternal smoking location at home on hospitalization for respiratory tract infections among young children in Japan. We used the large nationwide population-based longitudinal survey and restricted study participants to children born after 37 gestational weeks and singleton births (n = 43,851). We evaluated the associations among children between the ages of 6 and 18 months and between the ages of 18 and 30 months, respectively. After adjusting for potential confounders, both maternal outdoor and indoor smoking were associated with the elevated risk. The adjusted odds ratios (95% confidence intervals) of maternal outdoor and indoor smoking (vs nonsmoking mothers) were 1.21 (1.01-1.44) and 1.18 (1.04-1.33), respectively, in children between the ages of 6 and 18 months. We thus encourage a smoke-free home policy to protect children from second- and third-hand smoke exposure.
Collapse
Affiliation(s)
- Michiyo Yamakawa
- a Center for Regional Research, Okayama University , Okayama , Japan
| | - Takashi Yorifuji
- b Department of Human Ecology , Okayama University Graduate School of Environmental and Life Science , Okayama , Japan
| | - Tsuguhiko Kato
- c Department of Social Medicine , National Center for Child Health and Development , Tokyo , Japan
| | - Toshihide Tsuda
- b Department of Human Ecology , Okayama University Graduate School of Environmental and Life Science , Okayama , Japan
| | - Hiroyuki Doi
- d Department of Epidemiology , Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences , Okayama , Japan
| |
Collapse
|
41
|
Yamakawa M, Hashimoto Y, Sakamoto T, Yamamoto F, Ito Y, Tajiri S, Watari M, Nakajima M, Ando Y. Clinical features of patients presenting reversible cerebral vasoconstriction without thunderclap headache. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
42
|
Kato T, Yorifuji T, Yamakawa M, Inoue S, Doi H, Eboshida A, Kawachi I. Association of maternal age with child health: A Japanese longitudinal study. PLoS One 2017; 12:e0172544. [PMID: 28234951 PMCID: PMC5325269 DOI: 10.1371/journal.pone.0172544] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 10/04/2016] [Accepted: 02/05/2017] [Indexed: 12/03/2022] Open
Abstract
Average maternal age at birth has been rising steadily in Western and some Asian countries. Older maternal age has been associated with adverse pregnancy and birth outcomes; however, studies on the relationship between maternal age and young children’s health remain scarce. Therefore, we sought to investigate the association of maternal age with child health outcomes in the Japanese population. We analyzed data from two birth cohorts of the nationwide Japanese Longitudinal Survey of Babies in 21st Century (n2001 = 47,715 and n2010 = 38,554). We estimated risks of unintentional injuries and hospital admissions at 18 and 66 months according to maternal age, controlling for the following potential confounders: parental education; maternal parity, smoking status, and employment status; household income; paternal age, and sex of the child. We also included the following as potential mediators: preterm births and birthweight. We observed a decreasing trend in the risks of children’s unintentional injuries and hospital admissions at 18 months according to maternal age in both cohorts. In the 2001 cohort, compared to mothers <25 years, odds ratios of hospital admission at 18 months were 0.97 [95% CI: 0.86, 1.09], 0.92 [0.81, 1.05], 0.76 [0.65, 0.90], and 0.71 [0.51, 0.98] for mothers aged 25.0–29.9, 30.0–34.9, 35.0–39.9, and >40.0 years, respectively, controlling for confounders. Our findings were in line with previous findings from population-based studies conducted in the United Kingdom and Canada suggesting that older maternal age may be beneficial for early child health.
Collapse
Affiliation(s)
- Tsuguhiko Kato
- Department of Social Medicine, National Center for Child Health and Development, Tokyo, Japan
- * E-mail:
| | - Takashi Yorifuji
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Okayama, Japan
| | - Michiyo Yamakawa
- Center for Regional Research, Okayama University, Okayama, Japan
| | - Sachiko Inoue
- Department of Nursing, Okayama Prefectural University Graduate School of Health and Welfare Science, Okayama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Akira Eboshida
- Department of Public Health and Health Policy, Institute of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Ichiro Kawachi
- Department of Social and Behavioral Sciences, Harvard T.H. Chan School of Public Health, Boston, MA, United States of America
| |
Collapse
|
43
|
Tanaka H, Sagisaka A, Suzuki N, Yamakawa M. Bombyx mori E26 transformation-specific 2 (BmEts2), an Ets family protein, represses Bombyx mori Rels (BmRels)-mediated promoter activation of antimicrobial peptide genes in the silkworm Bombyx mori. Insect Mol Biol 2016; 25:566-579. [PMID: 27227900 DOI: 10.1111/imb.12244] [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] [Indexed: 06/05/2023]
Abstract
E26 transformation-specific (Ets) family transcription factors are known to play roles in various biological phenomena, including immunity, in vertebrates. However, the mechanisms by which Ets proteins contribute to immunity in invertebrates remain poorly understood. In this study, we identified a cDNA encoding BmEts2, which is a putative orthologue of Drosophila Yan and human translocation-ets-leukemia/Ets-variant gene 6, from the silkworm Bombyx mori. Expression of the BmEts2 gene was significantly increased in the fat bodies of silkworm larvae in response to injection with Escherichia coli and Staphylococcus aureus. BmEts2 overexpression dramatically repressed B. mori Rels (BmRels)-mediated promoter activation of antimicrobial peptide genes in silkworm cells. Conversely, gene knockdown of BmEts2 significantly enhanced BmRels activity. In addition, two κB sites located on the 5' upstream region of cecropin B1 were found to be involved in the repression of BmRels-mediated promoter activation. Protein-competition analysis further demonstrated that BmEts2 competitively inhibited binding of BmRels to κB sites. Overall, BmEts2 acts as a repressor of BmRels-mediated transactivation of antimicrobial protein genes by inhibiting the binding of BmRels to κB sites.
Collapse
Affiliation(s)
- H Tanaka
- Insect-Microbe Research Unit, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - A Sagisaka
- Insect-Microbe Research Unit, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - N Suzuki
- Division of Insect Sciences, National Institute of Agrobiological Sciences, Ibaraki, Japan
| | - M Yamakawa
- Division of Insect Sciences, National Institute of Agrobiological Sciences, Ibaraki, Japan
| |
Collapse
|
44
|
Yamakawa M, Ouhara K, Kajiya M, Munenaga S, Kittaka M, Yamasaki S, Takeda K, Takeshita K, Mizuno N, Fujita T, Sugiyama E, Kurihara H. Porphyromonas gingivalis infection exacerbates the onset of rheumatoid arthritis in SKG mice. Clin Exp Immunol 2016; 186:177-189. [PMID: 27465496 DOI: 10.1111/cei.12847] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/25/2016] [Indexed: 12/11/2022] Open
Abstract
Epidemiological studies have linked periodontitis to rheumatoid arthritis (RA). Porphyromonas gingivalis (Pg) was reported recently to produce citrullinated protein (CP) and increase anti-cyclic CP antibody (ACPA), both of which have been identified as causative factors of RA. In the present study, we determined the effects of Pg infection on the exacerbation of RA in a mouse model. RA model mice (SKG mice) were established by an intraperitoneal (i.p.) injection of laminarin (LA). Mice were divided into six groups, Ctrl (PBS injection), LA (LA injection), Pg/LA (Pg + LA injection), Pg (Pg injection), Ec/LA (Escherichia coli and LA injection) and Ec (E. coli injection). In order to evaluate RA, joint swelling by the arthritis score, bone morphology by microcomputed tomography (microCT), haematoxylin and eosin staining, ACPA, matrix metalloproteinase-3 (MMP-3) and cytokine level in serum by enzyme-linked immunosorbent assay were determined. Osteoclast differentiation from bone marrow mononuclear cells (BMCs) was examined to clarify the underlying mechanisms of RA. The presence of Pg and CP in joint tissue was also investigated. The arthritis score was threefold higher in the Pg/LA group than in the LA group. Severe bone destruction was observed in joint tissue of the Pg/LA group. A microCT analysis of the Pg/LA group revealed a decrease in bone density. ACPA, MMP-3, interleukin (IL)-2, IL-6, CXCL1 and macrophage inflammatory protein (MIP)-1α levels from the Pg/LA group were the highest. The osteoclastogenesis of BMCs was enhanced in the Pg/LA group. Furthermore, large amounts of Pg components and CP were detected in the Pg/LA group. In conclusion, Pg infection has the potential to exacerbate RA.
Collapse
Affiliation(s)
- M Yamakawa
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - K Ouhara
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University.
| | - M Kajiya
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - S Munenaga
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - M Kittaka
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - S Yamasaki
- Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Hiroshima, Japan
| | - K Takeda
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - K Takeshita
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - N Mizuno
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - T Fujita
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| | - E Sugiyama
- Department of Clinical Immunology and Rheumatology, Hiroshima University Hospital, Hiroshima, Japan
| | - H Kurihara
- Department of Periodontal Medicine, Division of Applied Life Sciences, Institute of Biomedical and Health Sciences, Hiroshima University
| |
Collapse
|
45
|
Mitani Y, Usami E, Kimura M, Nakao T, Okada K, Matsuoka T, Kokuryou T, Yoshimura T, Yamakawa M. Risk factors for neutropenia with lenalidomide plus dexamethasone therapy for multiple myeloma. Pharmazie 2016; 71:349-351. [PMID: 27455556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Neutropenia may develop as an adverse event in patients with multiple myeloma receiving lenalidomide (LEN) plus dexamethasone (DEX) therapy. In the present study, we examined the risk factors associated with grade 3/4 neutropenia during the first cycle of LEN plus DEX therapy. We observed that hemoglobin level (≤ 8.5 g/dl) was a significant risk factor for grade 3/4 neutropenia during the first cycle of therapy (odds ratio: 19.40; 95% confidence interval: 2.68-141.00; p < 0.01). thus, our findings suggest that determining the hemoglobin level could be useful in the risk management for neutropenia in patients receiving LEN plus DEX therapy.
Collapse
|
46
|
Tatsumoto M, Yamakawa M, Okajima K, Hirata K. Contribution of intrinsically photosensitive retinal ganglion cells in the photophobia of migraine patients. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.577] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
47
|
Kobayashi K, Yorifuji T, Yamakawa M, Oka M, Inoue S, Yoshinaga H, Doi H. Poor toddler-age sleep schedules predict school-age behavioral disorders in a longitudinal survey. Brain Dev 2015; 37:572-8. [PMID: 25459967 DOI: 10.1016/j.braindev.2014.10.004] [Citation(s) in RCA: 23] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2014] [Revised: 09/03/2014] [Accepted: 10/07/2014] [Indexed: 01/27/2023]
Abstract
OBJECTIVE Behavioral problems are often associated with poor sleep habits in children. We investigated whether undesirable toddler-age sleep schedules may be related to school-age behavioral problems. METHODS We analyzed the data of a nationwide longitudinal survey with available results from 2001 to 2011. The participants were 41,890 children. The predictors were waking time and bedtime at 2years of age, and the outcomes were assessed by determining the presence or absence of three attention problems and four aggressiveness problems at 8years of age. In logistic regression models with adjustments for confounding factors, we estimated odds ratios (ORs) and confidence intervals (CIs) for the association between toddler sleep schedules and behavior during primary-school age years. RESULTS The outcomes of attention problems and aggressiveness problems were observed in 1.7% and 1.2% of children, respectively, at 8years of age. The OR of an irregular or late morning waking time at 2years of age with the outcome of aggressiveness problems was 1.52 (95% CI, 1.04-2.22) in comparison to an early waking time. The OR of an irregular or late bedtime with attention problems was 1.62 (95% CI, 1.12-2.36), and the OR of an irregular or late bedtime with aggressiveness problems was 1.81 (95% CI, 1.19-2.77) in comparison to an early bedtime. CONCLUSION Poor toddler-age sleep schedules were found to predict behavioral problems during primary-school age years. Thus, good and regular sleep habits appear to be important for young children's healthy development.
Collapse
Affiliation(s)
- Katsuhiro Kobayashi
- Department of Child Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences and Okayama University Hospital, Okayama, Japan.
| | - Takashi Yorifuji
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Okayama, Japan
| | - Michiyo Yamakawa
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Okayama, Japan
| | - Makio Oka
- Department of Child Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences and Okayama University Hospital, Okayama, Japan
| | - Sachiko Inoue
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan; Department of Child and Adolescent Psychiatry, Okayama Psychiatric Medical Center, Okayama, Japan
| | - Harumi Yoshinaga
- Department of Child Neurology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences and Okayama University Hospital, Okayama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| |
Collapse
|
48
|
Nishitani H, Miki T, Morii H, Nishizawa Y, Ishimura E, Hagiwara S, Nakatsuka K, Yamakawa M. Decreased bone mineral density in diabetic patients on hemodialysis. Contrib Nephrol 2015; 90:223-7. [PMID: 1959351 DOI: 10.1159/000420147] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Renal osteodystrophy in hemodialyzed patients with DM-HD shows different features from that in non-DM,HD. Two studies were done. One was a comparison of BMD in 30 non-DM,HD patients and 30 DM-HD patients. The second was a comparison of possible factors affecting calcium metabolism in the higher and lower BMD groups (n = 20/21) in the DM-HD patients. BMD was measured by dual-energy X-ray absorptiometry (DEXA; Hologic QDR 1,000/W) in the third lumbar vertebra (L3), head, pelvis, and whole body. The BMDs of the DM-HD group were lower in these areas and whole body than that in the non-DM,HD group. A significant difference was found in the head BMD (p less than 0.05). In the second study, factors which may contribute to the differences in BMD were compared in the DM-HD patients divided into higher and lower BMD of the head. The group with higher head BMD had a value 110% of the mean value or more. Clinical and biochemical test results (age, the time since the first dialysis, body weight, the degree of obesity, height, serum calcium, serum phosphate, serum aluminum, serum c-PTH level and the dose of 1 alpha-OH-D3) were compared. The degree of obesity of the patients with higher BMD was significantly larger than that with lower BMD (p less than 0.005).
Collapse
Affiliation(s)
- H Nishitani
- Second Department of Internal Medicine, Osaka City University Medical School, Japan
| | | | | | | | | | | | | | | |
Collapse
|
49
|
Abstract
OBJECTIVES We investigated the association between breastfeeding duration during the first half year of life and the risk of early childhood caries from the age of 30 to 66 months in Japan. DESIGN Observational study of a longitudinal survey. SETTING A secondary data analysis of the Japanese Longitudinal Survey of Babies in the 21st Century. PARTICIPANTS 43,383 infants at the age of 6 months. OUTCOME MEASURES Early childhood caries--defined as a child's visit to a dentist for treatment of dental caries during the past 12 months--was ascertained from the caregiver from the age of 30 months in the survey. We estimated the risk of dental caries each year according to duration of breast feeding using logistic regression analyses. We controlled for a set of biological factors (birth weight, sex, parity and maternal age at delivery) and socioeconomic factors (maternal educational attainment and smoking status, marital status at delivery, family income and region of birth and residence). RESULTS We found that infants who had been breast fed for at least 6 or 7 months, both exclusively and partially, were at elevated risk of dental caries at the age of 30 months compared with those who had been exclusively formula fed. Adjusted ORs were 1.78 (95% CI, (1.45 to 2.17)) for the exclusively breastfed group and 1.39 (1.14 to 1.70) for the partially breastfed group. However, the associations became attenuated through the follow-up period and were no longer statistically significant beyond the age of 42 months for the partially breastfed group and beyond the age of 54 months for the exclusively breastfed group. CONCLUSIONS We found an association between breast feeding for at least 6 or 7 months and elevated risk of dental caries at age 30 months. However, the association became attenuated as children grew older.
Collapse
Affiliation(s)
- Tsuguhiko Kato
- Department of Public Health and Health Policy, Institute of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Takashi Yorifuji
- Department of Human Ecology, Okayama University Graduate School of Environmental and Life Science, Okayama, Japan
| | - Michiyo Yamakawa
- Center for Regional Research, Okayama University, Okayama, Japan
| | - Sachiko Inoue
- Department of Nursing, Okayama Prefectural University Graduate School of Health and Welfare Science, Okayama, Japan
| | - Keiko Saito
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroyuki Doi
- Department of Epidemiology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Ichiro Kawachi
- Department of Social and Behavioral Sciences, Harvard School of Public Health, Boston, Massachusetts, USA
| |
Collapse
|
50
|
Kato T, Shirafuji H, Tanaka S, Sato M, Yamakawa M, Tsuda T, Yanase T. Bovine Arboviruses in Culicoides Biting Midges and Sentinel Cattle in Southern Japan from 2003 to 2013. Transbound Emerg Dis 2015; 63:e160-e172. [PMID: 25597441 DOI: 10.1111/tbed.12324] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Indexed: 12/30/2022]
Abstract
Epizootic congenital abnormalities, encephalomyelitis and febrile illnesses in cattle caused by arthropod-borne viruses (arboviruses) are prevalent in Japan. Causative viruses including orthobunyaviruses, orbiviruses and rhabdovirus are thought to be transmitted by Culicoides biting midges. Recently, the incursions of several arboviruses, potentially Culicoides-borne, were newly confirmed in Japan. However, their spread pattern and exact vector species are currently uncertain. Attempts to isolate arboviruses from Culicoides biting midges and sentinel cattle were conducted in Kagoshima, located at the southernmost end of the main islands of Japan, a potentially high-risk area for incursion of arboviral diseases and outbreak of endemic ones. Seventy-eight isolates comprising Akabane, Peaton and Sathuperi viruses of the genus Orthobunyavirus of the family Bunyaviridae, bluetongue virus serotype 16, D'Aguilar virus, Bunyip Creek virus and epizootic haemorrhagic disease virus serotype 1 of the genus Orbivirus of the family Reoviridae, a potentially novel rhabdovirus of the genus Ephemerovirus and unidentified orbivirus-like viruses were obtained from Culicoides biting midges and sentinel cattle between 2003 and 2013. Akabane, Sathuperi, D'Aguilar and Bunyip Creek viruses were selectively isolated from Culicoides oxystoma, suggesting this vector's responsibility for these arbovirus outbreaks. The results of virus isolation also implied that C. tainanus, C. jacobsoni and C. punctatus are competent for the transmission of bluetongue virus serotype 16, Peaton virus and epizootic haemorrhagic disease virus serotype 1, respectively. Our monitoring in Culicoides biting midges and sentinel cattle detected the circulation of Akabane virus just prior to the accumulations of bovine congenital abnormalities and encephalomyelitis by it around study sites in 2003, 2006, 2008 and 2013. Silent circulations of the other arboviruses, including potentially new viruses, were also detected during the study period.
Collapse
Affiliation(s)
- T Kato
- Kyushu Research Station, National Institute of Animal Health, NARO, Kagoshima, Japan
| | - H Shirafuji
- Kyushu Research Station, National Institute of Animal Health, NARO, Kagoshima, Japan
| | - S Tanaka
- Kyushu Research Station, National Institute of Animal Health, NARO, Kagoshima, Japan
| | - M Sato
- National Institute of Animal Health, NARO, Tsukuba, Japan
| | - M Yamakawa
- National Institute of Animal Health, NARO, Tsukuba, Japan
| | - T Tsuda
- National Institute of Animal Health, NARO, Tsukuba, Japan
| | - T Yanase
- Kyushu Research Station, National Institute of Animal Health, NARO, Kagoshima, Japan.
| |
Collapse
|