释放6 - 尼特罗多巴胺从人类的脊柱动脉和静脉
Luis Frederico Gerbase de Oliveira1, José Britto-Júnior1, Antonio Tiago Lima1
1Department of Pharmacology, Faculty of Medical Sciences, State University of Campinas, Campinas, São Paulo, Brazil.
Life sciences
|May 27, 2023
概括
6-尼特罗多巴胺 (6-ND) 从人体外围血管释放出来,并作为多巴胺D2受体对手,导致血管放松. 这表明6-ND可以治疗周围血管疾病.
科学领域:
- 血管生物学 血管生物学
- 药理学 药理学是指药理学的学科.
- 内分泌学 在内分泌学.
背景情况:
- 6-尼特罗多巴胺 (6-ND) 是一种新型的甲醇胺,此前已在带血管中发现.
- 6-ND作为多巴胺D2受体对手,调解血管放松.
- 人类外周血管系统中6-ND的存在和功能以前没有被描述.
研究的目的:
- 研究6-ND从人体外围动脉和静脉中的释放.
- 确定6-ND在尾动脉和静脉组织中的作用机制.
- 探索6-ND在外周血管疾病中的潜在治疗作用.
主要方法:
- 从接受腿部截肢手术的患者身上获得了尾动脉和静脉组织.
- 使用液体染色学与合质谱学对6-ND释放的量化.
- 在隔离的组织环中测量了血管张力,评估了6 - ND和L-741,626与L-NAME或内皮切除或不切除的影响.
主要成果:
- 基底释放的6-ND被检测到在人类的脊柱动脉和静脉条,通过L-NAME和内皮去除减少.
- 在先前收缩的动脉和静脉环中,6-ND诱导了依赖度的放松.
- 对6-ND和选择性多巴胺D2抗剂L-741,626的放松取决于内皮的存在.
结论:
- 这项研究提供了人类外围动脉和静脉中6 - 尼特罗多巴胺释放的第一个证据.
- 由内皮衍生的多巴胺在尾动脉和静脉中充当显著的收缩剂.
- 选择性多巴胺D2受体对手,包括6-ND,在治疗人类外周血管疾病方面表现有前途.
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