莱普调解了与肥胖相关的血压增加
Stephanie E Simonds1, Jack T Pryor2, Eric Ravussin3
1Department of Physiology, Monash Obesity and Diabetes Institute, Monash University, Clayton, VIC 3800, Australia.
Cell
|December 7, 2014
概括
瘦素是一种与肥胖相关的激素,通过作用于特定的大脑路径,直接增加血压 (BP). 这一发现为与肥胖有关的心血管风险提供了新的见解.
科学领域:
- 内分泌学 在内分泌学.
- 神经科学是一个神经科学.
- 心血管科学 心血管科学
背景情况:
- 肥胖是心血管疾病的主要危险因素,经常伴有血压升高 (BP).
- 瘦素的作用,一个关键的肥胖激素,在调节血压是复杂的,并没有完全理解.
研究的目的:
- 调查丁在调解与饮食诱导肥胖 (DIO) 相关的血压升高中的因果作用.
- 为了确定勒素影响血压的神经回路.
主要方法:
- 在动物中研究了饮食诱导的肥胖 (DIO),包括瘦素缺乏和瘦素受体缺乏 (LepR) 模型.
- 利用了丁抗体,抗剂,并在背中介质下丘脑 (DMH) 中进行了针对性神经元抑制.
- 在DMH中检查了转基因小鼠与重新表达的瘦素受体 (LepRs) 的BP反应.
主要成果:
- 在DIO动物中,瘦素水平与血压升高直接相关.
- 在DIO模型中,瘦素缺乏或阻塞阻止了血压升高.
- 在DMH中准LepR表达神经元迅速降低了DIO小鼠的血压,无论体重如何.
- 在DIO LepR缺乏小鼠的DMH中恢复LepRs正常化BP.
结论:
- 在背中下丘脑中传递素信号是关键的调解者,将肥胖与哺乳动物血压升高联系起来.
- 这些发现强调了素作为管理肥胖个体高血压的潜在治疗标.
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