吗啡对TRPV1酸化的时间依赖调节与对心肌缺血/反损伤的不同吗啡作用相关
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Xin-Meng Wang1, Xiao-Xi Li2, Bo Jiang1
1College of Anaesthesia, Shanxi Medical University, 86 Xinjiannan Road, Taiyuan, 030001, Shanxi, China.
European journal of pharmacology
|May 17, 2024
概括
像吗啡一样,阿片类药物的使用可能会通过影响TRPV1活性,在缺血和再输血期间损害心肌. 服用时间至关重要,它会影响心脏功能和活力.
科学领域:
- 心脏病学 心脏病学
- 药理学 药理学是指药理学的学科.
- 神经科学是一个神经科学.
背景情况:
- 阿片类药物通常用于治疗急性心肌缺血和心脏梗塞的疼痛.
- 以前的研究表明,阿片类药物可能会在缺血-再输血损伤期间对心肌活力产生负面影响.
- 暂时受体潜在瓦尼洛伊德1 (TRPV1) 与疼痛感觉和心脏保护有关.
研究的目的:
- 通过与TRPV1活性相互作用,调查阿片类药物是否会加剧心肌活力.
- 探索TRPV1在调解吗啡在缺血-再输血期间对心脏的影响中的作用.
主要方法:
- 在成年大鼠心肌细胞中对TRPV1和阿片类受体 (μ, δ, κ) 的同表达分析.
- 在急性心肌缺血和再注血的老鼠模型中给予吗啡.
- 测量化TRPV1 (p-TRPV1),血清心脏素I (cTnI) 和心脏功能 (±dP/dt最大).
- 评估与或没有选择性阿片类受体抗剂的吗啡效应,以及不同的服用时间.
主要成果:
- 在缺血期间服用吗啡降低了p-TRPV1和增加了cTnI,表明心肌活力恶化.
- 吗啡的这些有害影响被阿片类受体对抗剂逆转.
- 在缺血之前*给予吗啡显著提高了p-TRPV1的调节,并改善了心脏功能 (±dP/dt max).
- 在p-TRPV1的变化与cTnI和心脏功能的变化相关.
结论:
- 阿片类药物给药时间极大地影响心肌活力和心脏表现在缺血-再输液期间.
- 通过阿片类药物调节TRPV1敏感性与心肌活力的恶化和改善相关.
- 研究结果表明,在缺血事件期间,阿片类药物,TRPV1和心脏之间存在复杂的相互作用.
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