硫化通过刺激体洞穴体中的抗氧化剂防御来保护勃起功能
bioRxiv : the preprint server for biology
|July 14, 2025
概括
硫化 (H2S) 通过减少肥胖小鼠的有害反应性氧物种 (ROS) 来改善勃起功能. 这表明H2S是肥胖相关勃起功能障碍的潜在治疗标.
科学领域:
- 生理学 生理学 生理学
- 生物化学 生物化学
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
背景情况:
- 肥胖是勃起功能障碍 (ED) 的重要危险因素.
- 洞穴体中过度反应性氧物种 (ROS) 有助于ED的发病.
- 硫化 (H2S) 具有血管扩张和抗氧化特性.
研究的目的:
- 调查H2S对勃起功能和阴茎ROS的影响.
- 检查H 2 S对内源抗氧化基因和洞穴体中蛋白质表达的影响.
主要方法:
- 野生类型小鼠与cystathionine γ-lyase淘汰 (CSE -/- ) 的小鼠进行比较.
- 饮食干预与西方风格的饮食 (WD) 在野生类型的小鼠,有或没有H2S前药物 (SG1002) 管理.
- 通过洞内压力评估勃起功能,通过微透析使用阴茎ROS,通过qRT-PCR和西欧斑点通过qRT-PCR和西欧斑点进行基因/蛋白质表达.
主要成果:
- 在CSE小鼠和WD小鼠中,勃起功能受损,但在WD小鼠中,SG1002治疗改善了.
- 在CSE小鼠和WD小鼠中,阴茎ROS水平升高,在SG1002治疗后降低.
- SG1002治疗上调的抗氧化基因 (Nqo1, Gclc, Gstm1, Gpx1, Gpx4, Hmox1, Txnrd1, Prdx3) 和下调的Txnip.
结论:
- H2S在维持勃起功能方面起着积极的作用.
- H2S增强阴茎的抗氧化能力,改善自由基平衡.
- H2S可以通过增强内源性谷氨和硫素抗氧化系统来发挥其有益作用.
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