饮食中酸盐补充剂改善了慢性缺血症中的重血管化
Ulrike B Hendgen-Cotta1, Peter Luedike, Matthias Totzeck
1Division of Cardiology, Pulmonology and Vascular Medicine, Medical Faculty, University Hospital Düsseldorf, Düsseldorf, Germany.
Circulation
|September 21, 2012
概括
酸盐食补充剂通过增加血液流动和细胞动员到缺血组织来增强再血管化. 口腔细菌对于这种酸盐到氧化的转化至关重要,突出了基于营养的新血管修复策略.
科学领域:
- 生理学 生理学 生理学
- 血管生物学 血管生物学
- 营养科学 营养科学
背景情况:
- 再血管化是缺血组织的关键修复过程,其中氧化起着关键作用.
- 食中酸盐通过口腔细菌转化为氧化的潜力,以帮助这一过程仍然未被探索.
研究的目的:
- 调查饮食中酸盐补充剂是否增强缺血引起的血管改造.
- 确定口腔共生细菌在调解酸盐对再血管化的作用中的作用.
主要方法:
- 小鼠接受了酸盐或对照剂14天,随后进行后肢手术以诱导缺血症.
- 评估血液流量,毛细血管密度,细胞动员 (CD34+/Flk-1+),细胞迁移 (骨髓衍生CD31+/CD45-),以及细胞亡.
- 研究了口腔细菌的作用,使用抗菌口水消灭减少酸盐的细菌.
主要成果:
- 饮食中酸盐增加了血中酸盐和S-酸醇,表明有效的转化.
- 增强了复血管化,增加了关键干细胞的动员和迁移到缺血部位.
- 减少再生性肌细胞的亡,改善血液流量的恢复.
- 通过消灭口服酸盐减少细菌,消除这些再生效应.
结论:
- 长期的酸盐食补充显示出作为一种以营养为基础的策略来改善缺血引起的再血管化的潜力.
- 口腔细菌将酸盐转化为氧化,对于调解这些有益作用至关重要.
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