肠道物质P增强了膀 afferent神经活动,而无需吐反射的影响
Hiroki Natsuya1,2, Tomoe Fujita2, Yoshiyuki Kojima1
1Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan.
Naunyn-Schmiedeberg's archives of pharmacology
|August 7, 2025
概括
物质P (SP) 增加了膀 afferent神经活动,并引起了detrusor收缩. 这些对膀功能的影响可能独立于素,为膀疼痛综合征和膀过活提供了新的治疗见解.
科学领域:
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 神经科学是一个神经科学.
- 药理学 药理学是指药理学的学科.
背景情况:
- 实物P (SP) 在膀生理学和病理学中起着关键作用,特别是在诸如间歇性囊炎/膀疼痛综合征 (IC/BPS) 和过度活性膀 (OAB) 等感官障碍中.
- 精确的机制,通过SP影响膀的感觉功能仍然不完全理解.
研究的目的:
- 研究SP对膀功能的影响,特别是研究其对膀 afferent神经活动的影响.
- 探索SP和素在调节膀感觉通路中的关系.
主要方法:
- 实验室器官浴室研究使用老鼠膀来评估SP诱导的dtrusor收缩.
- 在体内囊泡测量和测量多单元膀 afferent神经活动后,静脉SP插入.
- 免疫组织化学分析以定位神经素-1受体 (NK1R) 和短暂受体潜在化物1 (TRPV1) 在膀中的表达.
主要成果:
- 在完整的膀制剂中,SP的使用导致了膀内压的增加,但在素脱敏后的内外制剂中没有.
- 肠道SP灌注显著增加了膀 afferent神经活动,而没有改变囊泡测量参数.
- NK1R和TRPV1在膀壁中表现出明显但部分重叠的表达模式,在自身膜中有一些局部化.
结论:
- 通过光滑肌肉机制,SP诱导了detrusor收缩,并通过尿增强了膀 afferent活动.
- SP似乎可以独立于素调节膀功能.
- 这些发现为SP的病理生理学作用提供了新的见解,并建议IC/BPS和OAB的潜在治疗点.
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