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Xia Y, Huang L, Long Z, Chen Y, Gao L, Hua R, Li S, Wang Y. The association of preconceptional folic acid supplementation with gestational age and preterm birth risk in twin pregnancies: a prospective cohort study in China. Eur J Nutr 2024; 63:107-119. [PMID: 37733259 DOI: 10.1007/s00394-023-03223-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 07/24/2023] [Indexed: 09/22/2023]
Abstract
PURPOSE This study aims to explore the association of maternal preconceptional folic acid (FA) supplementation with gestational age and preterm birth in twin pregnancies, and whether the association varies by chorionicity or conception mode. METHODS From November 2018 to December 2021, the information of FA supplementation and pregnancy outcomes were collected in twin pregnant women. The linear regression models and the logistic regression were used to test the association of preconceptional FA supplementation with gestational age at delivery and preterm birth and premature rupture of membranes (PROM). RESULTS A total of 416 twin pregnancies were included. Compared with no use in twins, maternal preconceptional FA use was associated with a 0.385-week longer gestational age (95% CI 0.019-0.751) and lower risk of preterm birth < 36 weeks (adjusted OR 0.519; 95% CI 0.301-0.895) and PROM (adjusted OR 0.426; 95% CI 0.215-0.845). The protective effect on preterm birth < 36 weeks and PROM is similar whether taking FA supplements alone or multivitamins. However, the associations varied by chorionicity and conception mode of twins or compliance with supplementation. The positive associations between preconceptional FA use and gestational age only remained significant among twins via assisted reproductive technology or dichorionic diamniotic twins. Significant protective effects on preterm birth < 36 weeks and PROM were only found among women who took FA at least 4 times a week before conception. CONCLUSION Maternal preconceptional FA supplementation was associated with longer gestation duration and lower risk of preterm birth < 36 weeks and PROM in twin pregnancies. To improve the success of their pregnancies, reproductive women should start taking FA supplements well before conception and with good compliance.
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Affiliation(s)
- Yuanqing Xia
- Division of Maternal-Fetal Fetal Medicine, Prenatal Diagnosis Department, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Xuhui District, Shanghai, 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, 200030, China
| | - Lili Huang
- School of Public Health, Shanghai Jiao Tong University, 227 South Chongqing Road, Huangpu District, Shanghai, 200025, China
| | - Zichong Long
- School of Public Health, Shanghai Jiao Tong University, 227 South Chongqing Road, Huangpu District, Shanghai, 200025, China
| | - Yiting Chen
- School of Public Health, Shanghai Jiao Tong University, 227 South Chongqing Road, Huangpu District, Shanghai, 200025, China
| | - Li Gao
- Division of Maternal-Fetal Fetal Medicine, Prenatal Diagnosis Department, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Xuhui District, Shanghai, 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, 200030, China
| | - Renyi Hua
- Division of Maternal-Fetal Fetal Medicine, Prenatal Diagnosis Department, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Xuhui District, Shanghai, 200030, China
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China
- Shanghai Municipal Key Clinical Specialty, Shanghai, 200030, China
| | - Shenghui Li
- School of Public Health, Shanghai Jiao Tong University, 227 South Chongqing Road, Huangpu District, Shanghai, 200025, China.
| | - Yanlin Wang
- Division of Maternal-Fetal Fetal Medicine, Prenatal Diagnosis Department, International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, 910 Hengshan Road, Xuhui District, Shanghai, 200030, China.
- Shanghai Key Laboratory of Embryo Original Diseases, Shanghai, 200030, China.
- Shanghai Municipal Key Clinical Specialty, Shanghai, 200030, China.
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Du Y, Li J, Qu P, Dang S. Nonlinear Relationship Between Maternal and Cord Blood Vitamin B 12 and Folate from a Chinese Population-Based Study. Int J Womens Health 2023; 15:1405-1415. [PMID: 37701181 PMCID: PMC10493199 DOI: 10.2147/ijwh.s420206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Accepted: 08/30/2023] [Indexed: 09/14/2023] Open
Abstract
Purpose There remains a data gap on vitamin B12 and folate level in maternal and child populations. This study aimed to assess the status of vitamin B12 and folate in maternal serum (MS) and umbilical cord serum (UCS). Materials and Methods This was a planned secondary analysis of a case-control study. A total of 858 pregnant women during late pregnancy and their newborns in the hospitals of China were included. Maternal peripheral venous blood and neonatal umbilical cord blood were collected to determine serum vitamin B12 and folate concentration. Relationship of vitamin B12 or folate concentration between MS and UCS was assessed by a quantile regression model and the non-linear relationship between them was examined. Results Nutritional status of serum folate was better than that of vitamin B12. Prevalence of deficiency in MS vitamin B12 and folate was 73.4% and 14.2%, respectively and these figures were about 17.8% and 0.1% in UCS. Both vitamin B12 and folate levels in UCS were significantly higher than those in MS (vitamin B12: 321.0 pg/mL vs 158.3 pg/mL, folate: 16.5 ng/mL vs 7.0 ng/mL, P <0.001). The median UCS-MS ratio of vitamin B12 and folate was 2.0 (95% CI: 1.94-2.06) and 2.4 (95% CI: 2.30-2.53), respectively. The levels of folate and vitamin B12 in UCS increased nonlinearly with their increase in MS which presented an inverted U-shaped curve. Conclusion Deficiency in vitamin B12 and folate in the women during late pregnancy in China is prevalent. Nutritional status of the two vitamins in umbilical cord serum is correlated nonlinearly with that in maternal serum. Folic acid supplementation may be accompanied with vitamin B12 to improve status of vitamin B12 and folate during pregnancy.
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Affiliation(s)
- Yujiao Du
- Department of Epidemiology and Biostatistics, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an, 710061, People’s Republic of China
| | - Jing Li
- Department of Epidemiology and Biostatistics, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an, 710061, People’s Republic of China
| | - Pengfei Qu
- Assisted Reproduction Center, Northwest Women’s and Children’s Hospital, Xi’an Jiaotong University Health Science Center, Xi’an, 710003, People’s Republic of China
| | - Shaonong Dang
- Department of Epidemiology and Biostatistics, School of Public Health, Xi’an Jiaotong University Health Science Center, Xi’an, 710061, People’s Republic of China
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Jankovic-Karasoulos T, Smith MD, Leemaqz S, Williamson J, McCullough D, Arthurs AL, Jones LA, Bogias KJ, Mol BW, Dalton J, Dekker GA, Roberts CT. Elevated Maternal Folate Status and Changes in Maternal Prolactin, Placental Lactogen and Placental Growth Hormone Following Folic Acid Food Fortification: Evidence from Two Prospective Pregnancy Cohorts. Nutrients 2023; 15:1553. [PMID: 37049394 PMCID: PMC10097170 DOI: 10.3390/nu15071553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2023] [Revised: 03/10/2023] [Accepted: 03/10/2023] [Indexed: 04/14/2023] Open
Abstract
Folic acid (FA) food fortification in Australia has resulted in a higher-than-expected intake of FA during pregnancy. High FA intake is associated with increased insulin resistance and gestational diabetes. We aimed to establish whether maternal one-carbon metabolism and hormones that regulate glucose homeostasis change in healthy pregnancies post-FA food fortification. Circulating folate, B12, homocysteine, prolactin (PRL), human placental lactogen (hPL) and placental growth hormone (GH2) were measured in early pregnancy maternal blood in women with uncomplicated pregnancies prior to (SCOPE: N = 604) and post (STOP: N = 711)-FA food fortification. FA food fortification resulted in 63% higher maternal folate. STOP women had lower hPL (33%) and GH2 (43%) after 10 weeks of gestation, but they had higher PRL (29%) and hPL (28%) after 16 weeks. FA supplementation during pregnancy increased maternal folate and reduced homocysteine but only in the SCOPE group, and it was associated with 54% higher PRL in SCOPE but 28% lower PRL in STOP. FA food fortification increased maternal folate status, but supplements no longer had an effect, thereby calling into question their utility. An altered secretion of hormones that regulate glucose homeostasis in pregnancy could place women post-fortification at an increased risk of insulin resistance and gestational diabetes, particularly for older women and those with obesity.
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Affiliation(s)
| | - Melanie D. Smith
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
| | - Shalem Leemaqz
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
| | - Jessica Williamson
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
| | - Dylan McCullough
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
| | - Anya L. Arthurs
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
| | - Lauren A. Jones
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
| | | | - Ben W. Mol
- Department of Obstetrics and Gynaecology, Monash University, Clayton, VIC 3800, Australia
| | - Julia Dalton
- Lyell McEwin Hospital, Adelaide, SA 5112, Australia
| | - Gustaaf A. Dekker
- Lyell McEwin Hospital, Adelaide, SA 5112, Australia
- Lyell McEwin Hospital, The University of Adelaide, Adelaide, SA 5000, Australia
| | - Claire T. Roberts
- Flinders Health and Medical Research Institute, Flinders University, Adelaide, SA 5000, Australia
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Association between Folic Acid Supplementation and Hypertensive Disorder Complicating Pregnancy in Jiangsu Province: A Cross-Sectional Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:7255331. [PMID: 36110183 PMCID: PMC9470310 DOI: 10.1155/2022/7255331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 08/02/2022] [Accepted: 08/12/2022] [Indexed: 12/03/2022]
Abstract
Objectives To investigate the association of folic acid (FA) supplementation with hypertensive disorder complicating pregnancy (HDCP) and preeclampsia in Jiangsu Province, China. Materials and Methods In this cross-sectional study, a total of 10,662 women with infants born between January 2017 and December 2018 were enrolled in Jiangsu Province, China. Maternal women with and without FA supplement intake were compared in this study. FA supplementation included 0.4 mg FA (0.4 FA), multivitamins with 0.4 mg FA (multivitamin (MV)+0.4 FA), and multivitamins with 0.8 mg FA (MV + 0.8 FA). Associations between FA intake, FA supplement dose or duration, (MV + FA) dosage per weight, and HDCP were analysed using ANOVA, the chi-square test, and logistic regression analysis. Results Over the study follow-up period, the incidences of HDCP and preeclampsia were 3.5%, 1.4%, and 2.2%, 0.6% in the non-FA supplementation and FA supplementation groups, but only 1.5% and 0.1% in the MV + 0.8 FA group in early pregnancy. Compared with the non-FA group, HDCP and preeclampsia had the lowest risk in the MV + 0.8 FA group among the seven FA supplementation groups (HDCP: RR = 0.42, 95% CI = 0.27-0.68, P=0.001; preeclampsia: RR = 0.09, 95% CI = 0.03–0.33, P=0.001) in early pregnancy. Compared with the 0.4 FA alone group, the risk of HDCP and preeclampsia in women taking MV + 0.8 FA was significantly reduced (RR = 0.60, 95% CI = 0.41–0.87, P=0.008; preeclampsia: RR = 0.18, 95% CI = 0.06–0.60, P=0.005) in early pregnancy. (MV + FA)/BMI supplementation was associated with the risk of HDCP in early pregnancy (P trend = 0.002). Conclusions MV supplement with 0.8 mg FA during early pregnancy may be effective in reducing HDCP and preeclampsia risk. The study provided the viewpoint that (MV + FA)/BMI could be used as a reference for FA intake in pregnant women of different weights.
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Yang L, Wang W, Mao B, Qiu J, Guo H, Yi B, He X, Lin X, Lv L, Xu X, Liu Q, Cao Y, Chen Y. Maternal Folic Acid Supplementation, Dietary Folate Intake, and Low Birth Weight: A Birth Cohort Study. Front Public Health 2022; 10:844150. [PMID: 35757618 PMCID: PMC9218084 DOI: 10.3389/fpubh.2022.844150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 04/08/2022] [Indexed: 11/19/2022] Open
Abstract
Objectives To investigate the independent and collective effects of maternal folic acid supplementation or dietary folate intake on the risk of low birth weight (LBW), and to further comprehensively examine the joint associations of folic acid supplementation and dietary folate intake with LBW by various clinical subtypes. Design Participants were recruited from Gansu Provincial Maternity and Child Care Hospital. A standardized and structured questionnaire was distributed to collect demographic factors, reproductive and medical history, occupational and residential history, physical activity, and diet. Data on pregnancy-related complications and birth outcomes were extracted from medical records. Unconditional logistic regression models were used to estimate the odds ratio (OR) and 95% confidence interval (95% CI) for single and joint associations of folic acid supplementation and dietary folate intake with LBW. Setting A birth cohort data analysis using the 2010–2012 Gansu Provincial Maternity and Child Care Hospital in Lanzhou, China. Participants In total, 9,231 pregnant women and their children were enrolled in the study. Results Compared with non-users, folic acid supplementation was associated with a reduced risk of LBW (OR: 0.80, 95% CI: 0.66–0.97), and the reduced risk was mainly seen for term-LBW (OR: 0.59, 95% CI: 0.41–0.85), and multiparous-LBW (OR: 0.72, 95% CI: 0.54–0.94). There were no significant associations between dietary folate intake and LBW, and there was no interaction between folic acid supplement and dietary folate intake on LBW. Conclusions Our study results indicated that folic acid supplementation was associated with a reduced risk of LBW, and there was no interaction between folic acid supplements and dietary folate intake on LBW.
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Affiliation(s)
- Liping Yang
- Department of Public Health and Infection Management, Gansu Provincial Hospital of Traditional Chinese Medicine, Lanzhou, China
| | - Wenjuan Wang
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Baohong Mao
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Jie Qiu
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Huaqi Guo
- School of Public Health, Shanghai Jiao Tong University, Shanghai, China
| | - Bin Yi
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Xiaochun He
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Xiaojuan Lin
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Ling Lv
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Xiaoying Xu
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Qing Liu
- Department of Information Administration, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Yongchun Cao
- Department of Operation Management, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
| | - Yiming Chen
- Department of Human Resource, Gansu Provincial Maternity and Child Care Hospital, Lanzhou, China
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Zhao N, Wu W, Cui S, Li H, Feng Y, Guo L, Zhang Y, Wang S. Effects of Benzo[a]pyrene-DNA adducts, dietary vitamins, folate, and carotene intakes on preterm birth: a nested case-control study from the birth cohort in China. Environ Health 2022; 21:48. [PMID: 35513839 PMCID: PMC9074263 DOI: 10.1186/s12940-022-00859-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/26/2022] [Indexed: 05/13/2023]
Abstract
BACKGROUND Polycyclic aromatic hydrocarbons (PAHs) and its DNA adducts has been suggested to increase the risk of preterm birth (PB). Yet, few studies have been conducted to investigate this association, and the role of dietary nutrients intakes including vitamins, folate, and carotene during pre- and post-conception on this association has not been studied. METHODS Building upon a birth cohort in Taiyuan China, we conducted a nested case control study including 83 PB and 82 term births. Benzo[a]pyrene (BaP)-DNA adducts were measured by an improved LC-MC/MC analytic method. Dietary nutrient intakes were estimated from food frequency questionnaire using the Chinese Standard Tables of Food Consumption. Multivariable logistic regression model was used to examine the associations. RESULTS Increased risk of PB was observed as per interquartile increase in maternal BaP-DNA adduct level (OR = 1.27, 95%CI 0.95-1.67). Compared to low level (below mean) of maternal adducts, high level (above mean) of adducts was associated with the risk of PB (OR = 2.05, 95%CI 1.05-4.01). After stratified by dietary nutrients intakes, high adducts levels were associated with approximately 2-fourfold times increases in risk of PB among women with low vitamin A, C, E, folate, and carotene intakes during pre- and/or post-conception. Stronger stratified associations were consistently seen during preconception. Similar patterns were observed after additional adjustment for supplementation. CONCLUSIONS Our study supports the hypothesis that high level of maternal PAHs exposure was significantly associated with increased risk of PB, and provides the first evidence that dietary vitamins, carotene, and folate intake levels may modify this association during different pregnancy windows. Our findings are relevant to identify recommendation for environment management and prenatal nutrition regarding pregnant women and newborns. Further investigation in other populations is warranted.
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Affiliation(s)
- Nan Zhao
- Medical Research Center/State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
| | - Weiwei Wu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Shiwei Cui
- Chinese Center for Disease Control and Prevention, National Institute for Occupational Health and Poison Control, Beijing, China
| | - Haibin Li
- Chinese Center for Disease Control and Prevention, National Institute for Occupational Health and Poison Control, Beijing, China
| | - Yongliang Feng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ling Guo
- Institute of Urban Safety and Environmental Science, Beijing Academy of Science and Technology, Beijing, China
| | - Yawei Zhang
- National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Suping Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan, Shanxi, China.
- Chinese Center for Disease Control and Prevention, National Institute for Occupational Health and Poison Control, Beijing, China.
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Li S, Liu D, Kang Y, Qu P, Mi B, Zhu Z, Han L, Zhao Y, Chen F, Pei L, Zeng L, Wang D, Yan H, Dang S. Associations of B Vitamin-Related Dietary Pattern during Pregnancy with Birth Outcomes: A Population-Based Study in Northwest China. Nutrients 2022; 14:nu14030600. [PMID: 35276959 PMCID: PMC8838836 DOI: 10.3390/nu14030600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 01/26/2022] [Accepted: 01/27/2022] [Indexed: 02/04/2023] Open
Abstract
This study aimed to derive a maternal dietary pattern to explain the variation in B vitamins during pregnancy and to investigate this pattern in relation to birth outcomes. A total of 7347 women who gave birth to live newborns less than one year were included. Their dietary pattern during pregnancy was derived using the reduced-rank regression method with six B vitamins as response variables. Associations between dietary pattern score and birth weight, gestational age at delivery, birth weight Z score, low birth weight, preterm, and small-for-gestational-age (SGA) were estimated using generalised linear mixed models. We identified a high B-vitamin dietary pattern characterised by high intakes of animal foods, vegetables, fungi and algae, legumes, and low intakes of oils and cereals. Women in the highest quartile of this pattern score had newborns with a 44.5 g (95% CI: 13.8, 75.2 g) higher birth weight, 0.101 (95% CI: 0.029, 0.172) higher birth weight Z score, and 27.2% (OR: 0.728; 95% CI: 0.582, 0.910) lower risk of SGA than those in the lowest quartile. Our study suggested that adherence to the high B-vitamin dietary pattern during pregnancy was associated with a higher birth weight and a lower risk of SGA.
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Affiliation(s)
- Shanshan Li
- School of Public Health, Shandong First Medical University & Shandong Academy of Medical Sciences, Taian 271016, China;
| | - Danmeng Liu
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Yijun Kang
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Pengfei Qu
- Translational Medicine Center, Northwest Women’s and Children’s Hospital, Xi’an 710061, China;
| | - Baibing Mi
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Zhonghai Zhu
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Lixin Han
- Key Laboratory of Trace Elements and Endemic Diseases of National Health Commission, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China;
- Disease Control and Prevention Division, Shaanxi Provincial Health Commission, Xi’an 710000, China
| | - Yaling Zhao
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Fangyao Chen
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Leilei Pei
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Lingxia Zeng
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
| | - Duolao Wang
- Department of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool L3 5QA, UK;
| | - Hong Yan
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
- Nutrition and Food Safety Engineering Research Center of Shaanxi Province, Xi’an 710061, China
| | - Shaonong Dang
- Department of Epidemiology and Health Statistics, Health Science Center, Xi’an Jiaotong University, Xi’an 710061, China; (D.L.); (Y.K.); (B.M.); (Z.Z.); (Y.Z.); (F.C.); (L.P.); (L.Z.); (H.Y.)
- Correspondence:
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Shao Y, Mao B, Qiu J, Bai Y, Lin R, He X, Lin X, Lv L, Tang Z, Zhou M, Xu X, Yi B, Liu Q. Association between Iron Supplementation, Dietary Iron Intake and Risk of Moderate Preterm Birth: A Birth Cohort Study in China. IRANIAN JOURNAL OF PUBLIC HEALTH 2021; 50:1177-1187. [PMID: 34540738 PMCID: PMC8410969 DOI: 10.18502/ijph.v50i6.6416] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/06/2020] [Indexed: 01/15/2023]
Abstract
Background: To evaluate the independent and collective effects of maternal iron supplementation and dietary iron intake upon the risk of moderate preterm birth and its subtypes. Methods: In this birth cohort study, 1019 pregnant women with moderate preterm birth and 9160 women with term birth were recruited at Gansu Provincial Maternity and Child Care Hospital from 2010–2012 in China. Unconditional logistic regression models were utilized to evaluate the association between maternal iron supplementation, dietary iron intake, and the risk of moderate preterm birth and its subtypes. Results: Compared with non-users, iron supplement users exerted a protective effect upon the overall (OR=0.54, 95%CI=0.40–0.72) and spontaneous moderate preterm birth (OR=0.39, 95%CI=0.33–0.83). Compared with the 25th quartiles of dietary iron intake, either before or during pregnancy, it exerted a significantly protective effect upon those who had the highest quartiles of dietary iron intake (OR=0.87, 95%CI=0.82–0.95 for the highest quartiles of dietary iron intake before pregnancy OR=0.85, 95%CI=0.79–0.91). Positive association was observed between the additive scale and multiplicative scale for preterm birth, spontaneous preterm rather than medically indicated preterm. Conclusion: Iron supplements (60 mg/day) and high-iron intake (>25.86 mg/day before pregnancy, >30.46 mg/day during pregnancy) reduced the risk of moderate preterm birth. Positive correlation is found between the additive scale and multiplicative scale for preterm birth, spontaneous preterm birth.
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Affiliation(s)
- Yawen Shao
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Baohong Mao
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Jie Qiu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Yan Bai
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Ru Lin
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Xiaochun He
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Xiaojuan Lin
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Ling Lv
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Zhongfeng Tang
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Min Zhou
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Xiaoying Xu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Bin Yi
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
| | - Qing Liu
- Gansu Provincial Maternity and Child Care Hospital, Lanzhou, Gansu, China
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Liu S, Yu L, Wu Q, Cui H, Lin X, Wang W. Study on the correlation between vaginal bleeding in first trimester and preterm birth: A birth cohort study in Lanzhou, China. J Obstet Gynaecol Res 2021; 47:1997-2004. [PMID: 33749042 DOI: 10.1111/jog.14750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 01/08/2021] [Accepted: 03/05/2021] [Indexed: 11/27/2022]
Abstract
OBJECTS To investigate the correlation between first trimester vaginal bleeding and preterm birth (PB), and to offer suggestions on the perinatal health care and preterm birth prevention. METHODS A birth cohort study was conducted on 10 179 pregnant women. Unconditional logistic regression model was used to evaluate the associations between vaginal bleeding and preterm birth in sub-preterm groups. RESULTS Of the 10 179 pregnant women included, a total of 1001 women suffered from vaginal bleeding during the first trimester, of which 119 suffered from PB. Any vaginal bleeding increased the risk of PB. Severe bleeding was a high-risk factor of PB, associated with 4.8-fold risk of very PB, 2.7-fold risk of spontaneous PB without PROM (premature rupture of membrane) and 4.6-fold risk of medical induced PB. Bleeding prolonged more than 1 week increased 66% risk of PB and 36% risk of PB on initial episode happened in 5-12 weeks of gestation age, especially in moderate PB, in medical-induced PB and in spontaneous PB with PPROM (preterm premature rupture of membrane which is one cause of PB). Mild bleeding or bleeding within 1 week or initial episode happened within 4 weeks of gestation age possibly had no influence on PB. CONCLUSION Vaginal bleeding in the first-trimester was an independent risk factor for PB. The severity, duration and initial time of vaginal bleeding had different effects on different subtypes of PB.
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Affiliation(s)
- Sufen Liu
- Aviation General Hospital, Beijing, China
| | - Liqun Yu
- Aviation General Hospital, Beijing, China
| | | | - Hongmei Cui
- Gansu Provincial Maternity & Child Care Hospital, Lanzhou, China
| | - Xiaojuan Lin
- Gansu Provincial Maternity & Child Care Hospital, Lanzhou, China
| | - Wendi Wang
- Gansu Provincial Maternity & Child Care Hospital, Lanzhou, China
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Chen Q, Wu W, Yang H, Zhang P, Feng Y, Wang K, Wang Y, Wang S, Zhang Y. A Vegetable Dietary Pattern Is Associated with Lowered Risk of Gestational Diabetes Mellitus in Chinese Women. Diabetes Metab J 2020; 44:887-896. [PMID: 33081427 PMCID: PMC7801758 DOI: 10.4093/dmj.2019.0138] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 01/16/2020] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Identification of modifiable dietary factors, which are involved in the development of gestational diabetes mellitus (GDM), could inform strategies to prevent GDM. METHODS We examined the dietary patterns in a Chinese population and evaluated their relationship with GDM risk using a case-control study including 1,464 cases and 8,092 control subjects. Propensity score matching was used to reduce the imbalance of covariates between cases and controls. Dietary patterns were identified using factor analysis while their associations with GDM risk were evaluated using logistic regression models. RESULTS A "vegetable" dietary pattern was characterized as the consumption of green leafy vegetables (Chinese little greens and bean seedling), other vegetables (cabbages, carrots, tomatoes, eggplants, potatoes, mushrooms, peppers, bamboo shoots, agarics, and garlic), and bean products (soybean milk, tofu, kidney beans, and cowpea). For every quartile increase in the vegetables factor score during 1 year prior to conception, the first trimester, and the second trimester of pregnancy, the GDM risk lowered by 6% (odds ratio [OR], 0.94; 95% confidence interval [CI], 0.89 to 0.99), 7% (OR, 0.94; 95% CI, 0.88 to 0.99), and 9% (OR, 0.91; 95% CI, 0.86 to 0.96). CONCLUSION In conclusion, our study suggests that the vegetable dietary pattern is associated with lower GDM risk; however, the interpretation of the result should with caution due to the limitations in our study, and additional studies are necessary to explore the underlying mechanism of this relationship.
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Affiliation(s)
- Qiong Chen
- Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, Zhengzhou, China
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
| | - Weiwei Wu
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
| | - Hailan Yang
- Department of Obstetrics, The First Affiliated Hospital, Shanxi Medical University, Taiyuan, China
| | - Ping Zhang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
| | - Yongliang Feng
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
| | - Keke Wang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
| | - Ying Wang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
| | - Suping Wang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
- Corresponding authors: Yawei Zhang https://orcid.org/0000-0002-9762-7752 Department of Surgery, Yale University School of Medicine, 60 College Street, LEPH 440, New Haven, CT 06520, USA E-mail:
| | - Yawei Zhang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan, China
- Department of Surgery, Yale University School of Medicine, New Haven, CT, USA
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
- Corresponding authors: Yawei Zhang https://orcid.org/0000-0002-9762-7752 Department of Surgery, Yale University School of Medicine, 60 College Street, LEPH 440, New Haven, CT 06520, USA E-mail:
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The association between periconceptional folic acid supplementation and the risk of preterm birth: a population-based retrospective cohort study of 200,000 women in China. Eur J Nutr 2020; 60:2181-2192. [PMID: 33074387 PMCID: PMC8137572 DOI: 10.1007/s00394-020-02409-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 10/06/2020] [Indexed: 11/01/2022]
Abstract
PURPOSE The aim of this study was to examine the association between periconceptional folic acid (FA) supplementation and risk of preterm birth. METHODS We conducted a retrospective cohort study in women aged 18-49 who participated in the NFPHEP from 2010 to 2018, and had a singleton livebirth in 129 counties in southwest China. Participants were divided into four groups according to the time period starting FA use: no use, after the last menstrual period, at least 1-2 months before the last menstrual period, at least 3 months before the last menstrual period. The outcomes were preterm birth (gestation < 37 weeks) and early preterm birth (gestation < 34 weeks). RESULTS 201,477 women were included and 191,809 (95.2%) had taken FA during periconception. Compared with women who did not take FA, women who started taking FA 1-2 months before their last menstrual period had a 15% lower risk of preterm birth (aOR = 0.85, 95% CI 0.79-0.92), and women who started taking FA at least 3 months before their last menstrual period had a 20% lower risk of preterm birth (aOR = 0.80, 95% CI 0.75-0.87), but women who started taking FA after their last menstrual period did not appear to reduce the risk of preterm birth. CONCLUSIONS In this study of 200,000 Chinese women, periconceptional supplementation with FA was associated with a lower risk of preterm birth. Women who started taking FA at least 3 months before their last menstrual period were more likely to reduce the risk of preterm birth.
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Gazzino R, Marrocco W, D'Ingianna AP, Poggiogalle E, Giusti AM, Pinto A, Lenzi A, Donini LM. Folic acid supplementation in Italian women during pregnancy: A cross-sectional study conducted in general practice. Nutrition 2020; 79-80:110886. [PMID: 32717582 DOI: 10.1016/j.nut.2020.110886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 05/12/2020] [Accepted: 05/16/2020] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The association between folate insufficiency and congenital neural tube defects has been extensively investigated since the 1990s. To reach an adequate intake of folic acid (FA), improving folate status through periconceptional supplementation with FA, promotion of the consumption of foods rich in natural folates, and appropriate use of fortified foods is recommended. The aim of the present study was to investigate the supplementation of FA in a sample of pregnant women referred to general practice services in Italy, with a focus on the quality of information received by fertile women. METHODS Participants were recruited from patients admitted to 44 general practice offices enrolled in the Italian Society of Preventive Medicine and Lifestyle study and located in Italy throughout the national territory. A questionnaire for the evaluation of FA supplementation was administered by the general practitioners (GPs). The interviewed subjects were asked to provide information about pregnancy characteristics, nutritional habits, lifestyle and risk factors, information sources, and knowledge about FA. RESULTS This study included 328 participants. The percentage of women who did not take any FA supplements was 16.8%, and 66.4% of women started FA supplementation only after finding out they were pregnant. Only 16.8% of women started FA supplementation 12 wk before the beginning of pregnancy. The lack of supplementation with FA, as well as the incorrect adherence to the existing FA supplementation protocol, is attributable to different social (e.g., immigration, place of residence, job employment) and cultural (e.g., educational level, knowledge about FA) factors, the relatively poor planning of pregnancies, and the lack of information concerning the need for FA supplementation in the prepregnancy period. Finally, GPs and gynecologists are the only sources of information on the importance of FA supplementation. CONCLUSIONS The adherence of women to FA supplementation before pregnancy is still insufficient. The GP role in preconception care, and the promotion of FA supplementation, needs to be emphasized and further promoted.
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Affiliation(s)
- Roberta Gazzino
- Department of Experimental Medicine - Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University of Rome, Rome, Italy
| | - Walter Marrocco
- Italian Society of Preventive Medicine and Lifestyles, Rome, Italy
| | | | - Eleonora Poggiogalle
- Department of Experimental Medicine - Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University of Rome, Rome, Italy
| | - Anna Maria Giusti
- Department of Experimental Medicine - Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University of Rome, Rome, Italy
| | - Alessandro Pinto
- Department of Experimental Medicine - Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University of Rome, Rome, Italy
| | - Andrea Lenzi
- Department of Experimental Medicine - Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University of Rome, Rome, Italy
| | - Lorenzo M Donini
- Department of Experimental Medicine - Medical Pathophysiology, Food Science and Endocrinology Section, Sapienza University of Rome, Rome, Italy.
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- Italian Society of Preventive Medicine and Lifestyles, Rome, Italy
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Folic acid supplementation, dietary folate intake and risk of small for gestational age in China. Public Health Nutr 2019; 23:1965-1973. [PMID: 31787119 DOI: 10.1017/s1368980019003331] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
OBJECTIVE To investigate the hypothesis that folic acid supplementation and dietary folate intake before conception and during pregnancy reduce the risk of small for gestational age (SGA) and to examine the joint effect of folic acid supplementation and dietary folate intake on the risk of SGA. DESIGN Participants were interviewed by trained study interviewers using a standardized and structured questionnaire. Information on birth outcomes and maternal complications was abstracted from medical records and dietary information was collected via a semi-quantitative FFQ before conception and during pregnancy. SETTING A birth cohort data analysis using the 2010-2012 Gansu Provincial Maternity and Child Care Hospital. PARTICIPANTS Women (n 8758) and their children enrolled in the study. RESULTS Folic acid supplementation was associated with a reduced risk of SGA (OR = 0·72, 95 % CI 0·60, 0·86), with the reduced risk seen mainly for SGA at ≥37 weeks of gestational age (OR = 0·70, 95 % CI 0·58, 0·85) and nulliparous SGA (OR = 0·67, 95 % CI 0·54, 0·84). There was no significant association between dietary folate intake and SGA risk. CONCLUSIONS Our study suggested that folic acid supplementation was associated with a reduced risk of SGA and the risk varied by preterm status and parity.
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Li B, Zhang X, Peng X, Zhang S, Wang X, Zhu C. Folic Acid and Risk of Preterm Birth: A Meta-Analysis. Front Neurosci 2019; 13:1284. [PMID: 31849592 PMCID: PMC6892975 DOI: 10.3389/fnins.2019.01284] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 11/12/2019] [Indexed: 12/22/2022] Open
Abstract
The results from epidemiologic studies linking blood folate concentrations, folic acid supplementation, or dietary folate to the risk of preterm birth are inconsistent. In this study, we aimed to summarize the available evidence on these associations. A systematic search of the PubMed/MEDLINE, Google Scholar, Web of Science, and Cochrane Library databases up to October 20, 2018 was performed and reference lists of retrieved articles were screened. Pooled odds ratios (ORs) and 95% confidence intervals (CIs) for the highest vs. the lowest levels of folate concentrations, folic acid supplementation, and dietary folate were calculated using random-effects models. Subgroup analyses and univariate meta-regression were performed to explore the sources of heterogeneity. Ten studies (six prospective cohort studies and four case-control studies) were included on folate concentrations, 13 cohort studies were included about folic acid supplementation, and 4 cohort studies were included regarding dietary folate intake. Higher maternal folate levels were associated with a 28% reduction in the risk of preterm birth (OR 0.72, 95% CI 0.56–0.93). Higher folic acid supplementation was associated with 10% lower risk of preterm birth (OR 0.90, 95% CI 0.85–0.95). In addition, a significant negative association was observed between dietary folate intake and the risk of preterm birth (OR 0.68, 95% CI 0.55–0.84), but no significant relation was seen between dietary folate and the risk of spontaneous preterm birth (OR 0.89, 95% CI 0.57–1.41). In the subgroup analysis, higher maternal folate levels in the third trimester were associated with a lower risk of preterm birth (OR 0.58, 95% CI 0.36–0.94). To initiate taking folic acid supplementation early before conception was adversely associated with preterm birth risk (OR 0.89, 95% CI 0.83–0.95). In conclusion, higher maternal folate levels and folic acid supplementation were significantly associated with a lower risk of preterm birth. The limited data currently available suggest that dietary folate is associated with a significantly decreased risk of preterm birth.
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Affiliation(s)
- Bingbing Li
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Xiaoli Zhang
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Xirui Peng
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Shan Zhang
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China
| | - Xiaoyang Wang
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China.,Perinatal Center, Institute of Neuroscience and Physiology, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
| | - Changlian Zhu
- Henan Key Laboratory of Child Brain Injury, Third Affiliated Hospital and Institute of Neuroscience of Zhengzhou University, Zhengzhou, China.,Center for Brain Repair and Rehabilitation, Institute of Neuroscience and Physiology, University of Gothenburg, Sahlgrenska Academy, Gothenburg, Sweden
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15
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The association of maternal dietary folate intake and folic acid supplementation with small-for-gestational-age births: a cross-sectional study in Northwest China. Br J Nutr 2019; 122:459-467. [DOI: 10.1017/s0007114519001272] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
AbstractThe effect of maternal folate intake on small-for-gestational-age (SGA) births remains inconclusive. The present study aimed to investigate the associations of maternal folate intake from diet and supplements with the risk of SGA births using data from a cross-sectional study in Shaanxi Province of Northwest China. A total of 7307 women who were within 12 months (median 3; 10th–90th percentile 0–7) after delivery were included. Two-level models were adopted to examine the associations of folate (dietary folate, supplemental folic acid and total folate) intake with the risk of SGA births and birth weight Z score, controlling for a minimum set of confounders that were identified in a directed acyclic graph. Results showed that a higher supplemental folic acid intake during the first trimester was negatively associated with the risk of SGA births (≤60 d v. non-use: OR 0·80; 95 % CI 0·66, 0·96; >60 d v. non-use: OR 0·78; 95 % CI 0·65, 0·94; Ptrend = 0·010; per 10-d increase: OR 0·97; 95 % CI 0·95, 0·99). A higher total folate intake during pregnancy was associated with a reduced risk of SGA births (highest tertile v. lowest tertile: OR 0·77; 95 % CI 0·64, 0·94; Ptrend = 0·010; per one-unit increase in the log-transformed value: OR 0·81; 95 % CI 0·69, 0·95). A similar pattern was observed for the birth weight Z score. Our study suggested that folic acid supplementation during the first trimester and a higher total folate intake during pregnancy were associated with a reduced risk of SGA births.
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Effects of maternal folic acid supplementation during pregnancy on infant neurodevelopment at 1 month of age: a birth cohort study in China. Eur J Nutr 2019; 59:1345-1356. [PMID: 31098661 DOI: 10.1007/s00394-019-01986-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 05/03/2019] [Indexed: 12/28/2022]
Abstract
PURPOSE This study aimed to explore effects of maternal folic acid (FA) supplementation during pregnancy on neurodevelopment in 1-month-old infants and to determine whether effects may be related to maternal circulating inflammatory cytokine concentrations. METHODS This birth cohort study recruited 1186 mother-infant pairs in Tianjin, China, between July 2015 and July 2017. The women completed interviewer-administered questionnaires on their lifestyles and FA supplementation during pregnancy. Neurodevelopment was assessed in 1-month-old infants using a standard neuropsychological examination table. In 192 women, serum homocysteine (Hcy) and inflammatory cytokine concentrations were measured at 16-18 weeks of gestation. RESULTS The infants whose mothers took FA supplements during pregnancy had a significantly higher development quotient (DQ) compared with those whose mothers were non-users (P < 0.05). After adjustment for maternal characteristics, supplementary FA use for 1-3 months, 3-6 months, and > 6 months were associated with the increases of 7.7, 11.0, and 7.4 units in the scale of infant DQ score compared with women reporting no supplement use, respectively (P < 0.05). FA supplementation was associated with a decreased serum concentration of Hcy (β = [Formula: see text] 0.19), which was correlated with women's serum inflammatory cytokine concentrations at 16-18 weeks of gestation (β = 0.57). Serum inflammatory cytokine concentrations were inversely related to DQ score in the 1-months-old offspring (β = [Formula: see text] 0.22). CONCLUSIONS Maternal FA supplementation during pregnancy favors neurodevelopment in the offspring at 1-month-old. This association may be mediated by changes in serum Hcy and inflammatory cytokine concentrations throughout pregnancy.
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Chen Q, Feng Y, Yang H, Wu W, Zhang P, Wang K, Wang Y, Ko J, Shen J, Guo L, Zhao F, Du W, Ru S, Wang S, Zhang Y. A Vitamin Pattern Diet Is Associated with Decreased Risk of Gestational Diabetes Mellitus in Chinese Women: Results from a Case Control Study in Taiyuan, China. J Diabetes Res 2019; 2019:5232308. [PMID: 31089473 PMCID: PMC6476050 DOI: 10.1155/2019/5232308] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 12/28/2018] [Accepted: 01/17/2019] [Indexed: 01/01/2023] Open
Abstract
Identification of modifiable dietary factors, which are involved in the development of gestational diabetes mellitus (GDM), could inform strategies to prevent GDM. Therefore, we examined the dietary nutrient patterns and evaluated their relationship with GDM risk in a Chinese population using a case control study design. A total of 1,464 GDM cases and 8,092 non-GDM controls were included in the final analysis. Dietary intake was assessed using a 33-item food frequency questionnaire, and nutrients were estimated using the Chinese Standard Tables of Food Consumption. Dietary nutrient patterns were identified using factor analysis, and their associations with GDM risk were evaluated using unconditional logistic regression models adjusting for total energy intake, maternal age, high blood pressure, education, maternal body mass index (BMI), parity, and family history of diabetes. A "vitamin" nutrient pattern was characterized as the consumption of diet rich in vitamin A, carotene, vitamin B2, vitamin B6, vitamin C, dietary fiber, folate, calcium, and potassium. For every quartile increase in the vitamin factor score during one year prior to conception, the first trimester, and the second trimester of pregnancy, the GDM risk decreased by 9% (OR: 0.91, 95%CI: 0.86-0.96), 9% (OR: 0.91, 95%CI: 0.86-0.96), and 10% (OR: 0.90, 95%CI: 0.85-0.95), respectively. The significant reduced GDM risk was seen in women regardless of age and parity, and slightly stronger effect was found in women whose age ≤ 30 and women who are nulliparous across the three time periods. The significant association was also found in women whose BMI ≤ 24 with similar effect size across the three time periods. Our study suggests that the vitamin nutrient pattern diet is associated with decreased GDM risk. Additional studies are necessary to explore the underlying mechanism of this relationship.
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Affiliation(s)
- Qiong Chen
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
- Office for Cancer Prevention and Research, Affiliated Cancer Hospital of Zhengzhou University/Henan Cancer Hospital, Zhengzhou 450008, China
| | - Yongliang Feng
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Hailan Yang
- Department of Obstetrics, The First Affiliated Hospital, Shanxi Medical University, Taiyuan 030001, China
| | - Weiwei Wu
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Ping Zhang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Keke Wang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Ying Wang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Jamie Ko
- Department of Chronic Disease Epidemiology, Yale School of Public Health, New Haven, 06520 CT, USA
| | - Jiaxin Shen
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Lingling Guo
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Feng Zhao
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Wenqiong Du
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Shouhang Ru
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Suping Wang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
| | - Yawei Zhang
- Department of Epidemiology, Shanxi Medical University School of Public Health, Taiyuan 030001, China
- Department of Surgery, Yale University School of Medicine, New Haven 06520, USA
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, 06520 CT, USA
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Supplementation of folic acid in pregnancy and the risk of preeclampsia and gestational hypertension: a meta-analysis. Arch Gynecol Obstet 2018; 298:697-704. [PMID: 29978414 PMCID: PMC6153594 DOI: 10.1007/s00404-018-4823-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Accepted: 06/13/2018] [Indexed: 12/17/2022]
Abstract
OBJECTIVES We aimed to systematically assess the relationship between folic acid supplementation in pregnancy and risk of preeclampsia and gestational hypertension. METHODS The relevant studies were included by retrieving the Embase, PubMed and Cochrane library databases. Data extraction was conducted by two investigators independently. The risk ratio (RR) and 95% confidence interval (CI) were used as effect indexes to evaluate the relationship between folic acid supplementation and risk of gestational hypertension or preeclampsia. A subgroup analysis was performed according to the supplementation patterns of folic acid. The homogeneity of the effect size was tested across the studies, and publication biases were examined. RESULTS In total, 13 cohort studies and 1 randomized controlled trial study was included, containing 160,562 and 149,320 women with and without folic acid supplementation during pregnancy. Pooled results showed that risk of gestational hypertension was not associated with the supplementation of folic acid. However, folic acid supplementation during pregnancy could significantly reduce the risk of preeclampsia. Moreover, the results of subgroup analysis showed that the decreased preeclampsia risk was associated with supplementation of multivitamins containing folic acid rather than folic acid alone. CONCLUSIONS Our findings indicate that the supplementation of multivitamins containing folic acid during pregnancy could significantly lower preeclampsia risk.
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Shapiro ALB, Ringham BM, Glueck DH, Norris JM, Barbour LA, Friedman JE, Dabelea D. Infant Adiposity is Independently Associated with a Maternal High Fat Diet but not Related to Niacin Intake: The Healthy Start Study. Matern Child Health J 2018; 21:1662-1668. [PMID: 28161859 DOI: 10.1007/s10995-016-2258-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Objectives Over-nutrition during pregnancy resulting from maternal obesity or an unhealthy diet can lead to excess infant adiposity at birth. Specific dietary macro- and micronutrients have been shown to increase fat cell development in both in-vitro and in-vivo models and may therefore link maternal diet to increased infant adiposity. We hypothesized that high maternal dietary niacin intake during pregnancy, especially in combination with a high-fat diet (HFD) would increase infant adiposity. Methods We included 1040 participants from a pre-birth cohort of mother-infant pairs. Maternal diet was assessed using multiple 24-hour dietary recalls. HFD was defined as ≥30% of calories from fat and ≥12% of fat calories from saturated fat. Neonatal body composition (% fat mass [%FM], fat mass [FM], fat-free mass [FFM]) was measured by PEAPOD. We used multivariate regression to assess the joint effect of maternal dietary niacin and maternal HFD on neonatal body composition. Results Dietary niacin was not associated with neonatal body composition, and maternal HFD did not modify this finding. However, maternal HFD was independently associated with %FM (β = 0.8 [0.1, 1.4]%, p < 0.01] and FM (β = 32.4 [6.7, 58.0] g, p < 0.01). Conclusions for Practice Our results suggest that a HFD during pregnancy may increase infant adiposity, therefore supporting the need for improved diet counseling of pregnant women at both the clinical and community levels.
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Affiliation(s)
- Allison L B Shapiro
- Department of Epidemiology, Colorado School of Public Health (CSPH), University of Colorado Anschutz Medical Campus, Campus Box B426, 13001 E. 17th Place Aurora, Denver, CO, USA.
| | - Brandy M Ringham
- Department of Biostatistics, CSPH, University of Colorado Anschutz Medical Campus, Denver, CO, USA
| | - Deborah H Glueck
- Department of Biostatistics, CSPH, University of Colorado Anschutz Medical Campus, Denver, CO, USA
| | - Jill M Norris
- Department of Epidemiology, Colorado School of Public Health (CSPH), University of Colorado Anschutz Medical Campus, Campus Box B426, 13001 E. 17th Place Aurora, Denver, CO, USA
| | - Linda A Barbour
- Departments of Medicine and Obstetrics and Gynecology, School of Medicine, University of Colorado, Denver, CO, USA
| | - Jacob E Friedman
- Departments of Pediatrics and Biochemistry & Molecular Genetics, School of Medicine, University of Colorado, Denver, CO, USA
| | - Dana Dabelea
- Department of Epidemiology, Colorado School of Public Health (CSPH), University of Colorado Anschutz Medical Campus, Campus Box B426, 13001 E. 17th Place Aurora, Denver, CO, USA
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Mao B, Qiu J, Zhao N, Shao Y, Dai W, He X, Cui H, Lin X, Lv L, Tang Z, Xu S, Huang H, Zhou M, Xu X, Qiu W, Liu Q, Zhang Y. Maternal folic acid supplementation and dietary folate intake and congenital heart defects. PLoS One 2017; 12:e0187996. [PMID: 29145433 PMCID: PMC5690601 DOI: 10.1371/journal.pone.0187996] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 10/30/2017] [Indexed: 11/19/2022] Open
Abstract
Background It has been reported that folic acid supplementation before and/or during pregnancy could reduce the risk of congenital heart defects (CHDs). However, the results from limited epidemiologic studies have been inconclusive. We investigated the associations between maternal folic acid supplementation, dietary folate intake, and the risk of CHDs. Methods A birth cohort study was conducted in 2010–2012 at the Gansu Provincial Maternity & Child Care Hospital in Lanzhou, China. After exclusion of stillbirths and multiple births, a total of 94 births were identified with congenital heart defects, and 9,993 births without any birth defects. Unconditional logistic regression was used to estimate the associations. Results Compared to non-users, folic acid supplement users before pregnancy had a reduced risk of overall CHDs (OR: 0.42, 95% CI: 0.21–0.86, Ptrend = 0.025) after adjusted for potential confounders. A protective effect was observed for certain subtypes of CHDs (OR: 0.37, 95% CI: 0.16–0.85 for malformation of great arteries; 0.26, 0.10–0.68 for malformation of cardiac septa; 0.34, 0.13–0.93 for Atrial septal defect). A similar protective effect was also seen for multiple CHDs (OR: 0.49, 95% CI: 0.26–0.93, Ptrend = 0.004). Compared with the middle quartiles of dietary folate intake, lower dietary folate intake (<149.88 μg/day) during pregnancy were associated with increased risk of overall CHDs (OR: 1.63, 95% CI: 1.01–2.62) and patent ductus arteriosus (OR: 1.85, 95% CI: 1.03–3.32). Women who were non-user folic acid supplement and lower dietary folate intake have almost 2-fold increased CHDs risk in their offspring. Conclusions Our study suggested that folic acid supplementation before pregnancy was associated with a reduced risk of CHDs, lower dietary folate intake during pregnancy was associated with increased risk. The observed associations varied by CHD subtypes. A synergistic effect of dietary folate intake and folic acid supplementation was also observed.
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Affiliation(s)
- Baohong Mao
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Jie Qiu
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Nan Zhao
- Yale University School of Public Health, New Haven, Connecticut, United States of America
| | - Yawen Shao
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Wei Dai
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Xiaochun He
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Hongmei Cui
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Xiaojuan Lin
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Ling Lv
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Zhongfeng Tang
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Sijuan Xu
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Huang Huang
- Yale University School of Public Health, New Haven, Connecticut, United States of America
| | - Min Zhou
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Xiaoying Xu
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Weitao Qiu
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
| | - Qing Liu
- Gansu Provincial Maternity and Child Care Hospital, Qilihe District, Lanzhou, Gansu Province, China
- * E-mail: (YZ); (QL)
| | - Yawei Zhang
- Yale University School of Public Health, New Haven, Connecticut, United States of America
- * E-mail: (YZ); (QL)
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Genetic polymorphism of MTHFR C677T with preterm birth and low birth weight susceptibility: a meta-analysis. Arch Gynecol Obstet 2017; 295:1105-1118. [PMID: 28283826 DOI: 10.1007/s00404-017-4322-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Accepted: 01/10/2017] [Indexed: 12/29/2022]
Abstract
PURPOSE This study aimed at clarifying the association of maternal and neonatal methylenetetrahydrofolate reductase (MTHFR) C677T polymorphisms with preterm birth (PTB) and low birth weight (LBW) susceptibility, respectively. MATERIALS AND METHODS A systematic search of Embase, Medline, China Biological Medicine Database (CBM), Chinese National Knowledge Infrastructure (CNKI), and Wanfang Database was performed before June, 2016. The frequencies of maternal and neonatal MTHFR C677T genotypes in the cases and controls and other information were extracted by two independent investigators. Odds ratios (ORs) with 95% confidence intervals (CIs) were adopted to estimate the relationships between MTHFR C677T polymorphisms and PTB as well as LBW by random or fixed effect models. RESULTS Twenty-five studies from 20 articles concerning maternal and neonatal MTHFR C677T gene polymorphism with PTB and LBW were included in this study. Maternal MTHFR C677T polymorphism was associated with PTB risk under allele contrast (T vs. C, OR = 1.36, 95% CI 1.02-1.81), homozygote (TT vs. CC, OR = 1.70, 95% CI 1.07-2.68), and recessive (TT vs. CT + CC, OR = 1.49, 95% CI 1.00-2.22) model, but not dominant or heterozygote model. Maternal MTHFR C677T polymorphism was also associated with LBW risk under allele contrast (OR = 1.69, 95% CI 1.25-2.28), homozygote (OR = 2.26, 95% CI 1.44-3.54), dominant (OR = 1.71, 95% CI 1.19-2.47), recessive (OR = 1.79, 95% CI 1.42-2.26) model, but not heterozygote model. No associations between neonatal MTHFR C677T polymorphism and PTB or LBW were found under all genetic models. CONCLUSIONS Identification of maternal MTHFR C677T mutation may play a key role for primary prevention of PTB as well as LBW and screening pregnant women of high risk in developing countries.
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Kheirouri S, Alizadeh M. The contribution of prenatal maternal factors to maternal gestational weight gain. Health Care Women Int 2017; 38:544-555. [PMID: 28071985 DOI: 10.1080/07399332.2017.1279163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Data from 807 mothers in Iran delivering a singleton live infant and their offspring-during the last 2 years up to August 2014-were collected from eight public health care centers and analyzed. Of the women, 46.2% gained weight within the recommended range, 29.4% had inadequate gestational weight gain (GWG), and 24.4% had excessive GWG. Excessive GWG was more common among overweight and obese women, whereas inadequate GWG was prevalent among 50% of under and normal weight women. A significant correlation was found between maternal anthropometric characteristics, folic acid intake during pregnancy, and birth order with GWG. Maternal GWG was positively correlated with neonates' weight and height.
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Affiliation(s)
- Sorayya Kheirouri
- a Department of Nutrition , Tabriz University of Medical Sciences , Tabriz , Iran
| | - Mohammad Alizadeh
- a Department of Nutrition , Tabriz University of Medical Sciences , Tabriz , Iran
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