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同型半胱氨酸对大鼠血管内皮依赖性舒张反应的影响 被引量:3

Effect of homocysteine on endothelium-dependent vasodilatation of carotid artery in rats
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摘要 目的 :观察同型半胱氨酸对内皮依赖性舒张反应的影响。方法 :Wistar大鼠 2 4只 ,随机分为两组。实验组腹腔内注射同型半胱氨酸溶液 10 0mg·kg-1·d-1;对照组注射等量生理盐水。第 16周末 ,测血清同型半胱氨酸浓度、扫描电镜检查颈总动脉内皮细胞并测定离体内皮依赖性舒张功能。结果 :实验组血清同型半胱氨酸 [(2 4 5 6± 6 13) μmol/L]显著高于对照组 [(11 6 4± 2 6 0 ) μmol/L ,P <0 0 1]。扫描电镜观察 ,实验组内皮细胞表面收缩、凹凸不平、细胞间隙增宽 ,部分区域可见片状脱落 ;实验组的血管环对乙酰胆碱浓度依赖性舒张反应明显下降。结论 :同型半胱氨酸对血管内皮细胞有损伤作用 ,进而降低内皮依赖性舒张功能。
机构地区 无锡解放军
出处 《中国病理生理杂志》 CAS CSCD 北大核心 2001年第7期699-701,共3页 Chinese Journal of Pathophysiology
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