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黄连素对人脐静脉内皮细胞分泌一氧化氮的影响 被引量:1

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摘要 目的探讨黄连素对高糖、高脂损伤人脐静脉内皮细胞(HUVECs)分泌一氧化氮的影响及其保护内皮细胞的作用机制。方法体外培养HUVECs,采用MTT法检测细胞生长存活率,并建立Glu+ox-LDL损伤HUVECs模型。实验分组如下:正常组:DMEM培养液+10%胎牛血清;模型组:Glu 40 mmol/L+ox-LDL 100 mg/L;黄连素低组:Glu 40 mmol/L+ox-LDL 100 mg/L+黄连素1.25μg/ml;黄连素中组:Glu 40 mmol/L+oxLDL 100 mg/L+黄连素2.5μg/ml;黄连素高组:Glu 40 mmol/L+ox-LDL 100 mg/L+黄连素5μg/ml。采用硝酸还原酶法检测培养HUVECs上清液中NO含量,比较各组细胞NO的分泌水平。结果模型组NO水平显著低于正常对照组(P<0.01),黄连素处理组NO水平显著高于模型组,以5μg/ml剂量组作用最显著(P<0.01)。结论高糖、高脂处理HUVECs,可以降低HUVECs存活率,减少NO释放;黄连素可以提高Glu、ox-LDL联合诱导的HUVECs损伤的活性,并提高增殖率;黄连素改善Glu、ox-LDL联合诱导的HUVECs损伤的作用机制与其促进NO释放有关。
出处 《中国老年学杂志》 CAS CSCD 北大核心 2013年第17期4184-4186,共3页 Chinese Journal of Gerontology
基金 吉林省科技厅自然科学基金资助(No.200805101)
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