首页> 外文期刊>Canadian Journal of Physiology and Pharmacology >Protective effect of neferine on endothelial cell nitric oxide production induced by lysophosphatidylcholine: the role of the DDAH-ADMA pathway.
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Protective effect of neferine on endothelial cell nitric oxide production induced by lysophosphatidylcholine: the role of the DDAH-ADMA pathway.

机译:肾上腺素对溶血磷脂酰胆碱诱导的内皮细胞一氧化氮生成的保护作用:DDAH-ADMA途径的作用。

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摘要

Neferine, extracted from the seed embryo of Nelumbo nucifera Gaertn., has multiple cardiovascular pharmacological effects. The dimethylarginine dimethylaminohydrolase (DDAH) - asymmetric dimethylarginine (ADMA) system is a novel pathway for modulating nitric oxide (NO) production. The aim of this study was to investigate whether the protective effect of neferine on endothelial NO production was related to the DDAH-ADMA pathway. Human umbilical vein endothelial cells (HUVECs) were first exposed to neferine (0.1, 1.0, or 10.0 mumol/L) for 1 h, and then incubated with lysophosphatidylcholine (LPC; 10 mug/mL) in the presence of neferine for 24 h. The medium was collected for measuring the levels of NO, maleic dialdehyde (MDA), as well as ADMA. The endothelial cells were collected for measuring DDAH activity and the level of reactive oxygen species (ROS). LPC significantly decreased NO concentration and DDAH activity and increased the levels of ADMA, ROS, and MDA. Neferine could partially counteract the changes induced by LPC. These findings suggested that neferine could modulate the DDAH-ADMA pathway via its antioxidant properties, which was involved in its beneficial effect on endothelial NO production.
机译:从Nelumbo nucifera Gaertn的种子胚中提取的Neferine具有多种心血管药理作用。二甲基精氨酸二甲基氨基水解酶(DDAH)-不对称二甲基精氨酸(ADMA)系统是调节一氧化氮(NO)产生的新途径。这项研究的目的是调查neferine对内皮NO产生的保护作用是否与DDAH-ADMA途径有关。首先将人脐静脉内皮细胞(HUVEC)暴露于neferine(0.1、1.0或10.0 mumol / L)中1 h,然后在存在neferine的情况下与溶血磷脂酰胆碱(LPC; 10 cup / mL)一起孵育24 h。收集培养基以测量NO,马来二醛(MDA)以及ADMA的水平。收集内皮细胞以测量DDAH活性和活性氧(ROS)水平。 LPC显着降低了NO浓度和DDAH活性,并提高了ADMA,ROS和MDA的水平。 Neferine可以部分抵消LPC引起的变化。这些发现表明,neferine可以通过其抗氧化特性调节DDAH-ADMA途径,这与其对内皮NO产生的有益作用有关。

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