Asthma Clinical Trial
Official title:
Breastmilk, Infant Gut Microbiome and the Impact on Infant Health: a Prospective Mother-Infant Cohort Study in Malaysia and China
This mother-infant cohort study aims to determine the geographic differences in the microbial profiles in breast milk from mothers living in Malaysia and China that are potentially important determinants of infant development. It also aims to determine the impact of gut microbiome on infant health (temperament, gastrointestinal symptoms, eczema symptoms, and asthma symptoms).
Gut microbiota plays a critical role in children's developmental pathways especially in the first 1000 days of life. A number of pre- and post-natal factors were known to affect gut microbiota in infants during their first year of life including mode of delivery, infant feeding practices, dietary intake, and human milk composition. However, there is no mother-infant cohort study comparing gut microbiota profile and breastmilk composition of mothers living in Malaysia and China. Recent studies showed that gut microbiota was associated with infant health including temperament, gastrointestinal disorders, eczema, and asthma. However, little is known about the gut microbiome and the factors that contribute to microbial variation in the gut of South East Asian children. Increased awareness on the importance of gut health helps establish pre-natal and post-natal factors that promote healthy development and functioning of immune system, gastrointestinal health, and metabolism in infants. This study is a prospective cohort study involving pregnant women in the first trimester of pregnancy. Data will be collected from the eligible pregnant women during their first trimester (8-12 weeks of gestation), second trimester (24 weeks of gestation), third trimester (34 weeks of gestation) and follow-up infants and mothers postnatally after birth (1-5 days after delivery), at 10-15 days, 1 month, 4 months and 12 months of age with a total of 8 follow-ups of mother-infant biological samples and related research data. Mothers will be interviewed on socio-demographic background and information on pre-natal and post-natal factors such as obstetric history, exposure to antibiotics/prebiotics/probiotics/ paracetamol, pre-pregnancy body BMI, gestational weight gain, GDM, physical activity, food security, smoking during pregnancy/second-hand exposure, dietary intake, stress during pregnancy, home settings, pet keeping, and post-natal depression. Mothers will also be interviewed on their infants' sex, birth order, gestational age, mode of delivery, body weight, length, and head circumferences, second hand smoke exposure, exposure to antibiotics/prebiotics/probiotics/paracetamol, infant feeding practices, dietary intake, and dietary diversity. Anthropometric measurements of mothers and infants will be conducted at every visit. Blood, fecal, saliva, and urine samples of mothers and infants will also be collected. All bio-specimens are stored at -80°C until they are transported to National Engineering Center of Dairy for Maternal and Child Health, Beijing, China for further analysis. ;
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