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Updated: Aug 8, 2026
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Unveiling Xenobiotic Transport and Effects in Isolated Mitochondria: Insights from Respirometric and Enzymatic Assays
Published on: March 7, 2025
Mechanistic pathways linking gut microbial metabolites, microbial structural products, and host-microbe
Richard E Frye1,2, Daniel A Rossignol1,3
1Autism Discovery and Treatment Foundation, Phoenix, AZ, USA.
Gut Microbes
|August 7, 2026
Summary
Gut microbes produce metabolites that impact host mitochondria. This review found moderate evidence linking butyrate, propionate, indoxyl sulfate, and lipopolysaccharide to mitochondrial function, highlighting a microbiome-mitochondrial framework.
Area of Science:
- Microbiology
- Mitochondrial Biology
- Metabolomics
Background:
- Gut microbiota metabolites significantly influence host cellular processes.
- Mitochondrial dysfunction is implicated in numerous diseases.
- A comprehensive synthesis of gut metabolite-host mitochondrial interactions is lacking.
Purpose of the Study:
- To systematically review and synthesize evidence on gut-derived microbial metabolites and their direct effects on host mitochondrial endpoints.
- To identify key metabolite-mitochondrial interactions and regulatory pathways.
Main Methods:
- Systematic literature search of PubMed, Scopus, and Web of Science through March 2026.
- Inclusion of studies examining direct mitochondrial endpoints in relation to ten major classes of gut-derived metabolites.
- Exclusion of contextual evidence to focus on direct mechanistic links.
Main Results:
- Four metabolite-mitochondrial outcome groupings demonstrated moderate certainty: butyrate, propionate, indoxyl sulfate, and lipopolysaccharide.
- Butyrate generally enhanced mitochondrial biogenesis and ATP generation.
- Indoxyl sulfate generally impaired mitochondrial function; p-cresyl sulfate showed concentration-dependent effects.
- PGC-1α was identified as a central regulator integrating microbial signals for mitochondrial control.
Conclusions:
- Gut-derived microbial metabolites exert diverse, often concentration-dependent, effects on mitochondrial function.
- A mechanistic microbiome-mitochondrial framework is supported, with metabolites converging on key mitochondrial control nodes.
- The predominantly preclinical evidence base suggests these findings are hypothesis-generating for future research.
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