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To analyze the relationship between body mass index(BMI) during pre-pregnancy, maternal lipid levels during early pregnancy and childhood overweight and obesity, as well as the mediating role of maternal lipid levels during early pregnancy in pre-pregnancy BMI and childhood overweight and obesity, providing scientific evidence for developing obesity prevention strategies in preschool children.
Using data from Peking University Birth Cohort in Tongzhou (PKUBC-T) collected between June 2018 and September 2022, the study included 1 292 mother-child pairs. Participants were stratified into two groups based on children's BMI-Z scores at age 3: an overweight/obesity risk group (BMI-Z>1, n=173) and a non-overweight/obesity risk group (BMI-Z≤1, n=1 119).Multivariate Logistic regression was conducted to analyze the associations between pre-pregnancy BMI, maternal lipid levels[total cholesterol(TC), triglyceride(TG), high density lipoprotein cholesterol(HDL-C), low density lipoprotein cholesterol(LDL-C), TC/HDL-C, TG/HDL-C, LDL-C/HDL-C] during early pregnancy and childhood overweight and obesity. The mediating effect of maternal lipid levels during early pregnancy on pre-pregnancy BMI and childhood overweight and obesity was further explored.
There were statistically significant differences in pregnancy BMI levels, early pregnancy blood LDL-C, TC/HDL-C, LDL-C/HDL-C levels between the overweight and obesity risk group and the non overweight and obesity risk group (χ2/Z=19.01, 2.48, 2.48, 2.71, all P < 0.05). Multivariate Logistic regression analysis showed that pre-pregnancy BMI, LDL-C, TC/HDL-C and LDL-C/HDL-C in early pregnancy were significantly associated with childhood overweight and obesity (OR=1.09, 1.42, 1.49, 1.60, all P < 0.05). LDL-C, TC/HDL-C and LDL-C/HDL-C in early pregnancy played a significant mediating role on pre-pregnancy BMI and childhood obesity and the mediating effects accounted for 7.3%, 10.2%, 23.5% of the total effects, respectively (all P < 0.05).
Maternal hyperlipidemia during early pregnancy partially mediated the association between pre-pregnancy obesity and childhood obesity. Both pre-pregnancy obesity and maternal hyperlipidemia during early pregnancy are risk factors for obesity in preschool children.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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