Polyamine metabolism links gut microbiota and testicular dysfunction
Qi Zhao1,2, Jian-Feng Huang2,3, Yan Cheng1
1Frontiers Science Center for Disease-related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, China.
Microbiome
|November 11, 2021
Summary
Toxic exposures impair male fertility by disrupting gut microbiota and spermine levels. Restoring spermine or gut bacteria can reverse testicular dysfunction and improve fertility, offering new therapeutic strategies.
Area of Science:
- Reproductive Biology
- Microbiology
- Toxicology
Background:
- Male infertility due to environmental toxins is a global health concern.
- The metabolic pathways linking toxin exposure to testicular damage are not fully understood.
Purpose of the Study:
- To investigate the metabolic basis of triptolide-induced testicular dysfunction.
- To explore the role of polyamine metabolism and gut microbiota in male reproductive health.
Main Methods:
- Induction of testicular injury in mice using triptolide.
- Analysis of polyamine levels, gut microbiota composition, and gene expression.
- Intervention with exogenous spermine, antibiotics, microbial transplantation, and specific bacteria.
Main Results:
- Triptolide caused spermine deficiency and gut microbiota imbalance, leading to testicular dysfunction.
- Exogenous spermine supplementation or gut microbiota restoration (transplantation or Parabacteroides distasonis) reversed the injury.
- Spermine's protective effect involved upregulating heat shock protein 70s (HSP70s).
Conclusions:
- Gut microbiota alterations disrupt polyamine metabolism, contributing to male infertility.
- Modulating gut microbiota and polyamine levels presents a potential therapeutic approach for male infertility.
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