烟酰水杨酸对鹌鹑实验性动脉粥样硬化的预防作用

目的探讨烟酰水杨酸(N icotinylsalicylic ac id,NSA)对高脂饲料诱导的鹌鹑实验性动脉粥样硬化的预防作用。方法91只♂朝鲜种鹌鹑,随机分为6组,组1:普通饲料组(对照组)、组2:高脂饲料组(造模组)、组3:高脂饲料+NSA150 mg.kg-1.d-1、组4:高脂饲料+NSA 300 mg.kg-1.d-1、组5:高脂饲料+烟酸75 mg.kg-1.d-1+乙酰水杨酸75 mg.kg-1.d-1、组6:高脂饲料+烟酸150 mg.kg-1.d-1。动态监测(0、4和8 wk)其血浆总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C)和丙二醛(MDA),8 wk末处死动物,观察主动脉及左、右头臂动脉病理变化和TC、TG含量;观察心脏病理变化。结果高脂饲料可使鹌鹑血脂发生紊乱,血浆TC、TG水平增加,LDL-C、MDA明显升高,HDL-C水平下降;主动脉及左、右头臂动脉壁TC、TG含量升高,并有明显的动脉粥样硬化斑块形成。NSA可降低高脂饲料喂养的鹌鹑血浆TC、TG、LDL-C、MDA水平,升高HDL-C水平,动脉壁TC、TG含量降低,主动脉及左、右头臂动脉的AS斑块形成减轻。结论NSA对高脂饲料诱导的鹌鹑实验性动脉粥样硬化有预防作用。

Preventive effect of nicotinyl salicylic acid on experimental atherosclerosis in quails

Aim To investigate the preventive effect of nicotinylsalicylic acid(NSA) on experimental atherosclerosis in high cholesterol-fed quails. Methods Ninety one male quails were randomly divided into six groups:groupⅠ,normal control;groupⅡ,model control;group Ⅲ, NSA 150 mg·kg~(-1)·d~(-1); group Ⅳ, NSA 300 mg·kg~(-1)·d~(-1); groupⅤ, the nicotinic acid 75 mg·kg~(-1)·d~(-1) and the acetylsalicylic acid 75 mg·kg~(-1)·d~(-1); groupⅥ, the nicotinic acid 150 mg·kg~(-1)·d~(-1). The levels of TC,TG,HDL-C,LDL-C and MDA in serum were measured with biochemical method(0,4,8 wks). All of the quails were killed after 8 wks. Variables observed included aorta pathologic changed, TC and TG contents and the heart pathologic changes. Results The experimental data indicated that the high cholesterol-feeding increased the level of TC,TG,LDL-C and MDA,decreased the level of HDL-C in serum, aortic wall have obvious atherosclerosis. Data of the study demonstrated that the level of TC,TG,LDL-C and MDA were decreased,the level of HDL-C were increased by NSA in the high cholesterol-fed quails,aortic wall TC,TG were decreased by NSA,and atherosclerosis was regressed in aortic wall. Conclusion NSA has preventive effect on the experimental atherosclerosis among the high cholesterol-fed quails.