菲洛基能改善内皮功能,抑制细胞衰老,以及血管炎症
Anna Kieronska-Rudek1,2,3, Agnieszka Kij1, Anna Bar1
1Jagiellonian Centre for Experimental Therapeutics (JCET), Jagiellonian University, Krakow, Poland.
GeroScience
|July 9, 2024
概括
维生素K化合物菲洛基 (PK) 和梅纳基 (MK) 显示出类似的血管保护作用. 两者都抑制了血管炎症和细胞衰老,这表明PK提供了与MK相比的血管益处.
科学领域:
- 生物化学 生物化学
- 心血管研究研究心血管研究
- 营养科学 营养科学
背景情况:
- 维生素K的化合物,包括基 (PK) 和基 (MK),是重要的营养素.
- 血管功能障碍是一个重大的健康问题,了解保护机制至关重要.
- 之前的研究表明menaquinones具有血管保护性质.
研究的目的:
- 在各种血管功能障碍模型中研究菲洛基 (PK) 的血管保护潜力.
- 为了比较PK和MK对内皮功能,炎症和细胞衰老的影响.
- 探索PK的血管转化到menaquinone-4 (MK-4) 的过程.
主要方法:
- 在体内研究中,使用了用PK或MK养的ApoE/LDLR-/-小鼠.
- 在体外对隔离的大动脉和培养的血管细胞 (内皮细胞和光滑肌细胞) 的研究.
- 评估内皮功能,TNF诱导的血管松,炎症 (NFκB激活) 和细胞衰老.
主要成果:
- 在8周内,PK和MK都显著改善了ApoE/LDLR-/小鼠的内皮功能.
- 在隔离的大动脉中,PK和MK同样防止了TNF诱导的血管松功能受损.
- 通过在血管细胞中通过NFκB调节减少DNA损伤和抗炎活性,PK和MK表现出类似的抗衰老作用.
结论:
- 菲洛基 (PK) 和梅纳基 (MK) 具有类似的血管保护作用.
- 这些效应部分归因于细胞衰老和血管壁炎症的抑制.
- 血管转化PK到MK-4表明MK在PK的血管保护作用中的潜在作用.
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