血清素调节脂质生成和内分泌网膜压力在酒精性肝脏疾病
Inseon Hwang1,2, Jung Eun Nam2, Wonsuk Choi3
1Department of Biopharmacy, Daejeon Health University, Daejeon, Korea.
血清素 (5-hydroxytryptamine [5-HT]) 的升高有助于酒精性肝病 (ALD). 抑制肝5-HT受体2A (HTR2A) 信号传递可以防止ALD的进展,并可能提供一种新的治疗策略.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 神经胃肠病学 神经胃肠病学
- 分子医学是分子医学.
背景情况:
- 血清素 (5-基三胺[5-HT]) 在肝脏中起到多种作用.
- 5-HT及其受体,特别是5-HT受体2A (HTR2A) 和HTR2B在酒精性肝病 (ALD) 发病过程中的具体参与仍然不清楚.
- 了解这些作用对于开发针对性治疗ALD至关重要.
研究的目的:
- 调查肠道衍生的血清素 (GDS) 和肝5-HT受体 (HTR2A,HTR2B) 在酒精性肝病 (ALD) 的发展和进展中的作用.
- 评估抑制ALD中HTR2A信号传递的治疗潜力.
主要方法:
- 在人类ALD患者和以乙醇 (EtOH) 养小鼠的血液中测量了5-HT水平.
- 使用了肠特异性Tph1淘汰,肝特异性Htr2a淘汰和肝特异性Htr2b淘汰的小鼠,被食EtOH饮食.
- 评估肝损伤,肥胖症,内分泌网膜 (ER) 压力和炎症.
主要成果:
- 在人类和老鼠ALD模型中观察到血中5-HT度的增加.
- 缺乏肠道Tph1或肝脏Htr2a的小鼠对EtOH诱导的肥胖症具有抗性,具有下调的脂质生成途径.
- 在各种EtOH暴露模型中,抑制GDS合成或肝脏HTR2A信号阻止了ER压力和减弱肝损伤和炎症.
结论:
- 肠道衍生的血清素 (GDS) 通过ALD中的HTR2A信号传递直接影响肝脏脂质生成和ER压力.
- 抑制HTR2A信号显示出在多个ALD小鼠模型中对酒精诱导的肥胖症,肝损伤和疾病进展的保护作用.
- 针对HTR2A信号提供了一个有前途的ALD治疗策略.
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