The impact of maternal exposure to antibiotics on the development of child gut microbiome.

Antibiotics are widely prescribed for mothers in the peripartum period today. Approximately 40% of pregnant women at term are exposed to antibiotics. Antibiotics are useful against infectious conditions such as chorioamnionitis; however, they alter the maternal microbiome. The maternal microbiome, particularly the gut microbiome, is transmitted to their neonates and is one of the major sources that shape the child's gut microbiome. The gut microbiome early in life plays a crucial role in the development of the gut microbiome itself as well as the host health over the entire life. Microbes structure the commensal ecosystem in the host. Simultaneously, microbial components and metabolites influence the host organ functions including the immune system, and vice versa, the various factors of the host impact the microbiome. The alterations of the gut microbiome induced by antibiotics in mothers can lead to gut dysbiosis in children eventually resulting in chronic disease conditions including immune disorders. Knowledge of the lasting impacts of maternal peripartum exposure to antibiotics on the gut microbiome and health in offspring and reconsideration of the adequate use of antibiotics in clinical practice are needed. Avoiding and restoring neonatal dysbiosis following maternal antibiotics-induced dysbiosis could be a new preventive strategy for various diseases.