Gestational Diabetes-combined Excess Weight Gain Exacerbates Gut Microbiota Dysbiosis in Newborns, Associated with Reduced Abundance of , , and

Overview

Journal Front Cell Infect Microbiol

Specialties Cell Biology
Infectious Diseases
Microbiology

Date 2024 Dec 27

PMID 39726807

Authors

Yunshan Xiao

Yuan Shi

Yan Ni

Meilan Ni

Yuxin Yang

Xueqin Zhang

Affiliations

Soon will be listed here.

Abstract

Background: Existing literature indicates that Gestational diabetes mellitus (GDM) and maternal obesity disrupt the normal colonization of the neonatal gut microbiota alone. Still, the combined impact of GDM and excessive gestational weight gain (EGWG) on this process remains under explored. The association between gestational weight gain before/after GDM diagnosis and neonatal gut microbiota characteristics is also unclear.The purpose of this study is to conduct investigation and analysis on the above-mentioned issues, providing a basis for optimizing clinical management plans.

Methods: This study involved 98 mother-infant pairs categorized into GDM and non-GDM groups. The GDM group was further subdivided based on gestational weight gain (GWG) into normal (GDM+NGWG) and excessive (GDM+EGWG) weight gain groups. Neonatal stool samples were collected within 24 hours post-delivery for gut microbiota profiling through 16S rRNA gene sequencing. Statistical analyses explored correlations between total GWG/BMI gain and those before/after GDM diagnosis (t-GWG/GBG; b-GWG/GBG; a-GWG/GBG) with key bacterial taxa.

Results: Notable genus-level changes included enrichment of and , and depletion of , , , among GDM-Total and GDM+EGWG groups compared to non-GDM. Further,LEfSe analysis identified 30 differential bacteria taxa between GDM-Total and healthy control groups, which increased to 38 between GDM+EGWG and non-GDM groups, highlighting more pronounced microbial shifts associated with EGWG. was negatively correlated with t-GWG and newborn birth weight; The showed a negative correlation with t-GWG, t-GBG, and a-GBG. Additionally, exhibited negative correlations with t-GBG and a-GBG.

Conclusion: This study has identified that the presence of EGWG in GDM mothers further exacerbated neonatal gut microbial perturbations. Total GWG/GBG and those after the diagnosis of GDM were negatively correlated with the abundance of neonatal gut , , and . These findings provide new insights for precise prevention and management of GDM.

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