针对中央巴罗反射失效的新型治疗策略:生物巴罗反射系统
1Department of Cardiovascular Dynamics, National Cardiovascular Center Research Institute, Osaka, Japan. tacsato@ri.ncvc.go.jp
Circulation
|July 21, 1999
概括
生物气体气体反射系统 (BBS) 能够有效地模仿中央气体反射失效的老鼠的自然气体反射功能. 这种人工反系统对治疗严重的正静性低血压,如Shy-Drager综合征等疾病引起的治疗有前途.
科学领域:
- 生物医学工程 生物医学工程
- 神经科学是一个神经科学.
- 心血管生理学心血管生理学
背景情况:
- 中心巴罗反射失效,在Shy-Drager综合征和脊髓损伤中见到,导致严重的正静性低血压.
- 这种情况往往导致患者由于无法在站立时调节血压而被卧床.
- 一种新的治疗策略涉及创建一个人工反系统,自动调节交感血管运动音调.
研究的目的:
- 在大鼠模型中开发和测试生物气体反射系统 (BBS) 的有效性.
- 为了创建一个能够调节交感血管运动调节的人工反控制系统.
- 为了解决中央巴罗反射衰竭及其相关的严重正静性低血压.
主要方法:
- 使用大动脉门中的压力传感器和大神经中的刺激电极,构建了一个BBS原型.
- 使用白噪声估计的正常巴罗反射动力学来编程BBS计算机的系统识别.
- 在麻醉的老鼠中,通过通过同情性戒断诱导低血压来评估BBS.
主要成果:
- 该BBS计算机作为一个人造的血管运动中心,模仿本地巴罗反射动力学.
- 系统识别揭示了人造血管运动中心的转移功能作为高通波器.
- 在大鼠中,BBS抑制了系统性动脉压 (SAP) 的快速下降,在最低点下降了22+/-6毫米升,在高原上降低了16+/-5毫米升,与本地气回应功能相比.
结论:
- 开发的生物气旋反射系统在老鼠模型中证明了可行性.
- 该BBS有效地弥补了中央巴罗反射器故障.
- 这种方法有可能用于治疗导致巴罗反射障碍的患者.
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