【作者】 靳宏光；

【导师】 黄永生；

【作者基本信息】 长春中医药大学 ， 中医内科学， 2007， 硕士

【摘要】 目的：观察夏膝口服液对自发性高血压大鼠(SHR)血压、血浆肾素活性(PRA)、血管紧张素Ⅱ(AngⅡ)水平的影响，及其对心、肾等靶器官的保护作用，并初步探讨其作用机制。方法：50只12周龄雄性SHR随机分为SHR空白组，卡托普利组，夏膝口服液高、中、低剂量组，每组10只，同时选取10只同周龄的WKY大鼠作为对照。①采用尾动脉搏动法测量实验前、实验4周、实验8周各组大鼠的血压值；②采用放射免疫法测定实验8周后各组大鼠的PRA、AngⅡ含量；③测量心／体、肾／体比值，并取左心室及肾脏组织切片，采用HE染色，在光镜下观察其组织形态变化。结果：①各给药组大鼠血压均有不同程度下降，其中卡托普利组降压幅度最大，与夏膝口服液中、低剂量组相比有显著性差异(P＜0.05)，而与高剂量组比较则无显著差异(P＞0.05)；②PRA在夏膝口服液高、中剂量组及卡托普利组均升高，尤以卡托普利组升高显著(P＜0.05)；AngⅡ浓度，SHR空白组显著高于WKY组、卡托普利组和夏膝口服液高剂量组(P＜0.01)，而卡托普利组与夏膝口服液高剂量组之间则无明显差异(P＞0.05)；③各给药组大鼠心／体比值、肾／体比值均有不同程度下降，其中卡托普利组与夏膝口服液高剂量组最为显著(P＜0.01)；④各给药组大鼠心肌与肾脏组织经HE染色后观察，其损伤均有不同程度的减轻。结论：①夏膝口服液可明显降低SHR的收缩压；②夏膝口服液能够降低SHR血浆中AngⅡ含量；③夏膝口服液能够降低心／体、肾／体比值，在某种程度上具有逆转SHR靶器官损害的作用。更多还原

【Abstract】 Objective: The research was to observe the effects of Xiaxi oral liquid on the blood pressure, PRA, angiotensinⅡof spontaneously hypertensive rats, and its protection to the target organs such as heart and kidney, then to investigate the mechanisms initially. Methods: 12-week-old SHRs were assigned randomly into 5 groups: untreated, treated with captopril, treated with high dose of Xiaxi oral liquid, treated with moderate dose of Xiaxi liquid, treated with low dose of Xiaxi oral liquid, each group consists 10 rats, meanwhile 10 WKY rats the same age were selected as comparison.①Measure the pressure value of the rats before the experiment, after 4-week-treatment and after 8-week-treatment.②Detected the concentration of PRA and AngⅡof the rats after 8-week-treatment with radioimmunoassay.③Measure the ratios between the heart and the body, the kidney and the body; take the histological sections of left ventricle and kidney and color them with HE, then observe the histological changement with light microscope.Results:①BP was deceased in every treatment group and the depressurization extent of the captopril was greatest. Comparing with the moderate and the low dose groups, there were significant differences (P＜0.05), but there were no significant differences among the high dose groups (P＞0.05).②PRA was increased in the high and the moderate dose groups and in the captoprils, especially significant in the captopril (P＜0.05). The concentration of AngⅡwas higher in the untreated groups than in the WHY, captoptil and the high dose groups (P＜0.01). And there were no significant differences between the captopril and the high dose groups (P＞0.05).③The ratios of the heart and the body, the kidney and the body were deceased to different degrees, and they were more significant in the captopril and the high dose groups (P＜0.01).④Observing the cardiac muscle and the kidney tissue after colored with HE, all of the degree of injury were deceased to different degrees.Conclusions:①Xiaxi oral liquid can reduce the SBP of SHR significantly.②Xiaxi oral liquid can reduce the content of the plasma AngⅡ.③Xiaxi oral liquid can reduce the ratios of the heart and the body, the kidney and the body, and it has the ability to deteriorate the damage in the target organ of SHR.更多还原