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Effects of Two Distinct Psychoactive Microbes, JB-1 and 6475, on Circulating and Hippocampal mRNA in Male Mice. | LitMetric

Effects of Two Distinct Psychoactive Microbes, JB-1 and 6475, on Circulating and Hippocampal mRNA in Male Mice.

Int J Mol Sci

Division of Pulmonary Medicine, Department of Medicine, University of Alberta, 569 Heritage Medical Research Center, Edmonton, AB T6G 2S2, Canada.

Published: August 2022

Discovery of the microbiota-gut-brain axis has led to proposed microbe-based therapeutic strategies in mental health, including the use of mood-altering bacterial species, termed psychobiotics. However, we still have limited understanding of the key signaling pathways engaged by specific organisms in modulating brain function, and evidence suggests that bacteria with broadly similar neuroactive and immunomodulatory actions can drive different behavioral outcomes. We sought to identify pathways distinguishing two psychoactive bacterial strains that seemingly engage similar gut-brain signaling pathways but have distinct effects on behaviour. We used RNAseq to identify mRNAs differentially expressed in the blood and hippocampus of mice following JB-1, and 6475 treatment and performed Gene Set Enrichment Analysis (GSEA) to identify enrichment in pathway activity. , but not treatment altered several pathways in the blood and hippocampus, and the could be clearly distinguished based on mRNA profile. In particular, treatment modulated the activity of interferon signaling, JAK/STAT, and TNF-alpha via NF-KB pathways. Our results highlight that psychobiotics can induce complex changes in host gene expression, andin understanding these changes, we may help fine-tune selection of psychobiotics for treating mood disorders.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9456087PMC
http://dx.doi.org/10.3390/ijms23179653DOI Listing

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