International Journal on Science and Technology
E-ISSN: 2229-7677
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Volume 16 Issue 4
October-December 2025
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Microbial Metabolites as Neuroprotective Agents Against Heavy Metal Exposure
| Author(s) | Ganiyat Opemipo Sanni, Oghenefejiro Oro Ighogboja, Ebizimo Preyor, Mulikat Adeola Orenolu-Qamardeen |
|---|---|
| Country | United States |
| Abstract | Heavy metal exposure poses a significant threat to neurological health, contributing to cognitive dysfunction, neuroinflammation, and neurodegenerative disorders. In recent years, growing evidence has revealed the critical role of the gut microbiome and its metabolites in protecting the nervous system from toxic insults. Microbial metabolites such as short-chain fatty acids (SCFAs), indoles, bile acid derivatives, and neurotransmitter-like compounds act as biochemical mediators that maintain gut-brain communication and counteract the neurotoxic effects of metals like lead (Pb), cadmium (Cd), mercury (Hg), and arsenic (As). These metabolites influence neuroprotection by modulating oxidative stress, inflammation, mitochondrial function, and blood–brain barrier integrity. This paper explores how gut-derived metabolites mitigate heavy-metal-induced neurotoxicity through antioxidant defense mechanisms, regulation of microglial activity, and stabilization of neuronal signaling pathways. It further examines how dysbiosis, resulting from chronic metal exposure, disrupts the production of key neuroprotective metabolites and amplifies neuronal injury. Emerging therapeutic approaches such as microbiome modulation, dietary interventions, and probiotic supplementation are also discussed as promising strategies to enhance endogenous metabolite production and restore neuroprotective balance. Understanding the interplay between microbial metabolites and metal neurotoxicity provides a foundation for novel microbiome-based therapeutics that target the gut–brain axis to prevent or alleviate metal-induced neurological damage. |
| Keywords | Gut microbiome, Microbial metabolites, Heavy metals |
| Field | Biology > Medical / Physiology |
| Published In | Volume 16, Issue 4, October-December 2025 |
| Published On | 2025-11-22 |
| DOI | https://doi.org/10.71097/IJSAT.v16.i4.9560 |
| Short DOI | https://doi.org/hbb8ft |
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IJSAT DOI prefix is
10.71097/IJSAT
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