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ENGLISH ABSTRACT
JOURNAL ARTICLE
[Associations of Socioeconomic Factors,Nutrients Intake,and Gut Microbiota of Healthy Pregnant Women in the Third Trimester with Gestational Weight Gain].
Objective To investigate the associations of socioeconomic factors,nutrients intake,and gut microbiota of healthy pregnant women in the third trimester with gestational weight gain (GWG).Methods We recruited 98 pregnant women in the third trimester who had received antenatal care in the Department of Obstetrics Gynecology,Peking Union Medical College Hospital from October,2015 to May,2016. We collected socioeconomic information through a structured questionnaire covering age,ethnicity,height,pre-pregnancy weight,and education. Nutritional status of these pregnant women was assessed by a 24-hour dietary intake recall. The participants were provided with collective tubes for faecal sample collection at home;their weight before the delivery was recorded. The pre-pregnancy weight and GWG were classified according to World Health Organization body mass index (BMI) standard for adults and the Institute of Medicine GWG guidelines (2009),respectively. The gut microbiota of the participants were analyzed using a whole-metagenome shotgun sequencing method.Results Insufficient and excessive GWG accounted for 15.3% and 50.0% of the cohort,respectively. Appropriate GWG level was associated with intakes of fat (F=3.113,P=0.049),carbohydrates (F=3.750,P=0.027),and dietary fiber (F=4.499,P=0.014) but not with age (F=2.495,P=0.088),ethnicity (Χ 2 =0.065,P=0.968),education (Χ 2 =0.827,P=0.661),or pre-pregnancy BMI (F=0.121,P=0.887). Compared with the participants with appropriate GWG,those with excessive GWG had significantly higher abundance of Akkermansia muciniphila,Atopobium parvulum,and Alistipes indistinctus as well as lower abundance of Lactobacillus rhamnosus,Weissella unclassified,Eubacterium ventriosum,Ruminococcus torques,and Bacteroides uniformis. Compared with the participants with appropriate GWG,those with insufficient GWG had significantly higher abundance of Dialister invisus,Alistipes unclassified,Peptoniphilus harei,Escherichia unclassified,Parvimonas unclassified,Campylobacter ureolyticus,Lactobacillus crispatus,and Fusobacterium nucleatum and lower abundance of Eubacterium ventriosum.Conclusions Abnormal GWG is common in pregnant women. GWG is significantly associated with gut microbiota as well as with nutritional factors including fat,carbohydrate,and dietary fiber intake.
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