南西托隆B调节内源性阿片类系统,促进小鼠的抗受体
Renan Fernandes do Espírito-Santo1, Dourivaldo Silva Santos2, Pedro Santana Sales Lauria2
1Center to Advance Chronic Pain Research, University of Maryland, Baltimore, Maryland 21201, United States.
Journal of natural products
|November 10, 2023
概括
植物衍生化合物Tonantzitlolone B (TZL-B) 有效地减少了没有运动障碍的小鼠的疼痛. 它通过增加preproenkephalin (PENK) 基因表达来调节内源性阿片类系统.
科学领域:
- 药理学 药理学是指药理学的学科.
- 自然产品 化学 化学
- 神经科学是一个神经科学.
背景情况:
- 南西托隆B (TZL-B) 是一种从Stillingia loranthacea*中分离出来的二烯化合物.
- 内源性阿片类系统在疼痛调节中起着至关重要的作用.
- 了解天然化合物对疼痛通路的影响对于开发新的止痛药至关重要.
研究的目的:
- 在临床前疼痛模型中研究Tonantzitlolone B (TZL-B) 的抗性感受作用.
- 阐明TZL-B的作用机制,特别是与内源性阿片类系统的相互作用.
主要方法:
- 在小鼠中,使用甲素,全方位辅助剂 (CFA) 诱导的炎症,尾部动和冷板试验来评估抗受体活性.
- 使用阿片类药物抗剂 (纳洛,NOR-BNI,纳尔特林多尔,CTOP) *在体内*评估了阿片类系统的参与.
- 通过RT-qPCR进行了与阿片类激动剂化学相似性的*in silico*分析和脊髓前基因 (PENK) 基因表达的*ex vivo*测量.
主要成果:
- 在所有测试的疼痛模型中,TZL-B表现出显著的抗痛感作用,而不会导致运动障碍.
- 在CFA诱导的炎症模型中,TZL-B没有影响脚的胀.
- 片抗剂在尾部和冷板测试中部分逆转了TZL-B的抗受体作用,表明 κ-, δ-和 μ-片受体的参与. TZL-B治疗增加了脊髓中的PENK基因表达.
结论:
- 南西托隆B具有强大的抗受体特性.
- TZL-B通过调节内源性阿片类系统来发挥其缓解疼痛的作用,特别是通过增强的前脑蛋白 (PENK) 基因转录.
- TZL-B是一个有前途的天然化合物,作为一种新型止痛剂,该化合物的进一步研究是有希望的.
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