侧侧面神经元引起呼吸振荡驱动神经性高血压
Karolyne S Magalhães1, Renato W Martins Sá1, Nathalia Salim1
1Department of Physiology, School of Medicine of Ribeirão Preto, University of São Paulo, Brazil. (K.S.M., R.W.M.S., N.S., T.M.S., B.H.M.).
过度的交感活动会导致失控的高血压. 沉默特定髓神经元 (pFL) 降低了高血压大鼠的血压,这表明了治疗目标.
科学领域:
- 神经科学是一个神经科学.
- 心血管生理学心血管生理学
- 高血压研究 高血压研究
背景情况:
- 高血压是一个主要的心血管风险因素,在40%的治疗患者中控制不良.
- 过度的同情活动被认为是导致失控高血压的关键因素.
- 在pFL区域的神经呼吸振荡被假设在神经性高血压中被激活.
研究的目的:
- 调查pFL神经元活动在神经性高血压中的作用.
- 为了确定是否沉默pFL神经元具有抗高血压作用.
主要方法:
- 在大鼠中使用光遗传学和药物遗传学来操纵pFL神经元.
- 在正常血压和高血压的老鼠中记录了交感活动,呼吸机动输出和动脉压.
- 神经性高血压是通过慢性间歇性缺氧引起的.
主要成果:
- 激活pFL神经元增加了同情活动和血压.
- pFL神经元向RVLM和A5共感前神经元发射并激发它们.
- 抑制pFL神经元通过减少同情激发来使高血压大鼠的动脉压正常化.
结论:
- 在低氧引起的高血压中,交感活动的增加涉及到pFL呼吸振荡.
- pFL神经元驱动RVLM和A5交感神经元,导致活动过期和高血压.
- 抑制pFL神经元证明了高血压治疗的治疗潜力.
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