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干扰电流刺激增强了直肠运动活动:来自单独的透猪模型的见解
Richard Martel1,2, Michael Boettcher1,3, Michaela Klinke Petrowsky1
1Department of Pediatric Surgery, Universitätsmedizin Mannheim, Medical Faculty Mannheim, Heidelberg University, Mannheim, Baden-Württemberg, Germany.
概括
干扰电流 (IFC) 与5-25赫兹频率显著增加了直肠运动活动在一个ex vivo模型. 这种由肠道神经系统介导的效应持续了超过30分钟,表明IFC.
科学领域:
- 胃肠病学 胃肠病学
- 神经胃肠病学 神经胃肠病学
- 生理学 生理学 生理学
背景情况:
- 干扰电流 (IFC) 治疗用于肠道运动障碍,但其疗效和机制尚不清楚.
- 之前的临床试验仅报告了中度效应,需要对IFC的作用进行进一步调查.
- 神经解剖学目标和IFC调节肠道功能的精确机制尚未得到充分理解.
研究的目的:
- 调查IFC刺激对直肠运动活动的客观影响.
- 阐明肠道神经系统,特别是肠道和神经纤维在介导IFC作用中的作用.
- 为了比较不同IFC刺激频率对直肠运动的有效性.
主要方法:
- 使用一个孤立的透猪直肠模型,包括中肠,用于ex vivo实验.
- 在两个频率范围内应用IFC刺激:5-25 Hz (IFCd5-25) 和80-150 Hz (IFCd80-150).
- 通过测量内压力和纵向运动来评估直肠运动活动,并使用四毒素 (TTX) 和六甲 (HXN) 评估神经元参与.
主要成果:
- IFCd5-25刺激导致直肠运动活动显著增加30%,持续超过30分钟后刺激 (p <0.02).
- IFCd80-150仅对直肠运动有轻微的影响.
- 观察到的对IFC的运动反应被TTX和HXN都取消了,这表明神经元调节的关键作用,特别是在肠道质中.
结论:
- 在孤立的猪直肠模型中,IFC有效刺激直肠运动活动.
- 肠道神经系统的质受IFC调节,导致至少30分钟的运动活动增强.
- 隔离的猪直肠作为一个合适的实验模型来评估各种IFC参数对直肠功能的有效性.
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