血红氧酶-1在老鼠和人类中驱动甲炎和胰岛素抵抗
Alexander Jais1, Elisa Einwallner1, Omar Sharif2
1Medical University of Vienna, 1090 Vienna, Austria.
Cell
|July 5, 2014
概括
血氧酶-1 (HO-1) 惊人地促进了代谢疾病,而不是预防它. 抑制HO-1可能为肥胖和糖尿病提供新的治疗策略.
科学领域:
- 代谢性疾病研究研究.
- 炎症的分子机制.
- 肥胖和糖尿病的病理生理学.
背景情况:
- 肥胖和糖尿病影响全球50多亿人.
- "健康"和"不健康"的肥胖之间的区别不清楚,慢性代谢炎症 (代谢炎症) 起着关键作用.
- 研究了血氧酶-1 (HO-1) 在代谢疾病发展中的潜在抗炎作用.
研究的目的:
- 研究血红素氧酶-1 (HO-1) 在代谢性疾病中的作用.
- 为了确定HO-1是保护因素还是代谢功能障碍的驱动因素.
- 探索HO-1抑制作为潜在的治疗点.
主要方法:
- 从健康和抗胰岛素肥胖个体中分析人类脂肪组织活检.
- 在肝细胞和巨细胞中产生具有条件HO-1缺失的小鼠.
- 在小鼠中诱导饮食引起的肥胖和胰岛素抵抗.
- 细胞测试以评估炎症信号和胰岛素信号通路.
主要成果:
- 在人类肥胖中,HO-1水平与代谢性疾病严重程度正相关.
- 在小鼠中,有条件的HO-1删除赋予了对饮食诱导的胰岛素抵抗和炎症的耐药性.
- 删除HO-1显著减少了肝硬化和肝毒性等二次疾病.
- 细胞测试显示HO-1调节炎症和胰岛素信号值.
结论:
- 与假设相反,HO-1作为人类和小鼠代谢疾病的积极预测因素和驱动因素.
- 删除HO-1可以防止饮食引起的代谢功能障碍.
- 针对HO-1进行抑制,为肥胖和糖尿病等代谢疾病提供了一个有希望的治疗途径.
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