Ammonia and hydrogen sulfide - new insights into gut microbiota and male infertility through meta-analysis

文献类型： 外文期刊

第一作者： Hao, Yanan

作者： Hao, Yanan;Hao, Yanan;Du, Xin;Cai, Chang;Ren, Yonglin;Hao, Yanan;Zhao, Yong

作者机构：

关键词： ammonia; hydrogen sulfide; gut microbiota; male infertility; internal gases

期刊名称：FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY （ 影响因子：4.8； 五年影响因子：5.5 ）

ISSN： 2235-2988

年卷期： 2025 年 14 卷

页码：

收录情况： SCI

摘要： Background: Ammonia (NH3) and hydrogen sulfide (H2S) are produced during digestion in the human gut, yet the impact of these internally generated gases on male reproduction have received limited attention in scientific research. Methods: We systematically reviewed 935 scientific publications, spanning from 1947 to 2023, focusing on external or internal NH3 and/or H2S, male infertility, and gut microbiota. Meta-analysis was conducted to evaluate the summary relative risk (RR) and 95% confidence intervals (CIs) of combined studies. Results: Our findings revealed that the internal NH3 and/or H2S were negatively related to the Lactobacillus, which is beneficial to male fertility, whereas NH3 and H2S were positively related to Bacteroides, which showed negative effects on male fertility. The meta-analysis comparing Lactobacillus and Bacteroides levels with NH3 showed statistically significant results (p<0.001). Conclusions: The meta-analysis is the first to confirm these facts and explored the potential existence of a gut microbiota-inner gases-male fertility axis in the human gut.

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