Effects of Early-life Penicillin Exposure on the Gut Microbiome and Frontal Cortex and Amygdala Gene Expression

Overview

Journal iScience

Publisher Cell Press

Date 2021 Aug 6

PMID 34355145

Citations 11

Authors

Angelina Volkova

Kelly Ruggles

Anjelique Schulfer

Zhan Gao

Stephen D Ginsberg

Martin J Blaser

Affiliations

Soon will be listed here.

Abstract

We have established experimental systems to assess the effects of early-life exposures to antibiotics on the intestinal microbiota and gene expression in the brain. This model system is highly relevant to human exposure and may be developed into a preclinical model of neurodevelopmental disorders in which the gut-brain axis is perturbed, leading to organizational effects that permanently alter the structure and function of the brain. Exposing newborn mice to low-dose penicillin led to substantial changes in intestinal microbiota population structure and composition. Transcriptomic alterations implicate pathways perturbed in neurodevelopmental and neuropsychiatric disorders. There also were substantial effects on frontal cortex and amygdala gene expression by bioinformatic interrogation, affecting multiple pathways underlying neurodevelopment. Informatic analyses established linkages between specific intestinal microbial populations and the early-life expression of particular affected genes. These studies provide translational models to explore intestinal microbiome roles in the normal and abnormal maturation of the vulnerable central nervous system.

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