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On-Chip Endothelial Inflammatory Phenotyping
Published on: July 21, 2012
氨酸和维生素C改变了年轻吸烟者的单细胞和内皮功能障碍
F M Fennessy1, D S Moneley, J H Wang
1Department of Surgery, Royal College of Surgeons in Ireland, Beaumont Hospital, Dublin, Ireland.
Circulation
|January 29, 2003
概括
氨酸和维生素C补充剂通过调节单细胞-内皮相互作用,改善了年轻吸烟者的内皮功能. 氨酸对宏血管内皮健康产生了更显著的有益影响.
科学领域:
- 心血管研究研究心血管研究
- 内皮细胞生物学 内皮细胞生物学
- 营养科学 营养科学
背景情况:
- 单细胞-内皮相互作用在慢性吸烟等条件下有助于内皮功能障碍.
- 氨酸和维生素C具有已知的内皮保护性,可以抵抗炎症性压力.
研究的目的:
- 研究氨酸和维生素C在恢复年轻吸烟者的内皮功能方面的疗效.
- 为了确定这些补充剂是否会改变单细胞-内皮细胞相互作用.
主要方法:
- 在体内使用双重超声波评估内皮依赖性血管扩张.
- 在实验室中使用人类静脉内皮细胞 (HUVEC) 和单细胞条件介质 (MCM) 评估了单细胞-内皮相互作用.
主要成果:
- 与非吸烟者相比,年轻吸烟者表现出受损的内皮依赖血管扩张.
- 氨酸 (1.5g/d) 和维生素C (2g/d) 补充剂减轻了这种损伤.
- 吸烟者衍生的MCM减少了氧化和增加了HUVECs的内甲蛋白-1释放; taurine治疗通过对内皮氧化合成酶的上调调节逆转了这些效应.
结论:
- 氨酸补充剂对宏血管内皮功能产生积极影响.
- 建议进一步研究 taurine 对失脂性状态中的内皮功能的影响.
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