摘要
目的观察贝前列素联合辛伐他汀对野百合碱诱导的肺动脉高压大鼠的保护作用。方法40只雄性SD大鼠,随机数字表法分为对照组、模型组、贝前列素组、辛伐他汀组和联合用药组各8只。除对照组皮下注射等体积生理盐水外,其他各组均皮下注射野百合碱(60mg/kg)。对照组正常饲养21d,其他各组注射后第1天开始灌胃:模型组给予等体积生理盐水、贝前列素组给予贝前列素(100/,zg/kg)、辛伐他汀组给予辛伐他汀(2mg/kg)、联合用药组给予贝前列素(100μg/kg)和辛伐他汀(2mg/kg),1次/d,共21d。第22天测量各组大鼠心率、体循环平均压(MAP)及肺动脉平均压(mPAP),游离心脏标本测定右心室肥厚指数(RVHI),肺组织切片染色分别观察形态学变化、计算肺动脉中膜肥厚百分比(WT%);对以上指标数据进行统计学分析。结果各组大鼠之间心率和MAP差异均无统计学意义(均P〉0.05);贝前列素组、辛伐他汀组、联合用药组的mPAP分别为(27.4±3.7)、(29.9±4.4)、(23.1±3.9)mmHg(1mmHg:0.133kPa),RVH1分另0为(0.35±0.03)、(0.36±0.03)、(0.32±0.03),肺小动脉WT%分另0为26.7%±2.4%、28.2%±1.9%、17.4%±3.3%,均低于模型组的(35.4±5.7)mmg、0.4l±0.05、42.8%±5.9%(均P〈0.05)。结论贝前列素和辛伐他汀早期联合应用,能够延缓野百合碱诱导肺动脉高压大鼠mPAP升高及肺血管重构,减轻右心室肥厚,疗效优于单独用药。
Objective To explore the protective effects of beraprost plus simvastatin on monoerotaline-indueed pulmonary arterial hypertension in rats. Methods Forty male Sprague-Dawley rats were allocated to control (C), untreated pulmonary arterial hypertension (P), beraprost (B), simvastatin (S) and combination groups (Com) (n = 8 each). Normal saline was injected subcutaneously into group C and then there was no other intervention for 21 days. Group P, B, S and Cam rats received subcutaneous injections of monocrotaline (MCT, 60 mg/kg) and then isovolumetric normal saline, beraprost ( 100 μg · kg ^-1 ·d^-1), simvastatin (2 mg · kg ^-1 ·d^-1) and beraprost (100μg · kg ^-1 ·d^-1) plus simvastatin (2 mg· kg ^-1 ·d^-1) by daily gastric lavage for 21 days. At Day 22, heart rate (HR), mean arterial pressure (MAP) and mean pulmonary pressure (mPAP) were detected and right heart ventricular hypertrophy index (RVH1) was calculated. The histopathology changes and tunica media thickness percentage of pulmonary arteries ( WT% ) were evaluated by pulmonary tissue staining. The results were analyzed statistically. Results The differences of HR and MAP were not significant among 5 groups (all P〉0.05). The levels of mPAP, RVHI and WT% in group B ((27.4 ±3.7) mm Hg, 0.35 ±0.03, 26.7% ±2.4% ), group S ( (29. 9 ±4. 4) mm Hg, 0. 36 ±0. 03, 28.2% ±1.9% ) and group Corn ((23.1 ±3.9) mm Hg, 0.32 ±0.03, 17.4% ±3.3% ) were lower than those in group P ( (35.4 ±5.7) mm Hg, 0. 41 ±0. 05, 42.8% ± 5.9% ) (all P 〈 0. 05). Conclusions The eombined use of berapmst and simvastatiu may delay tile increase of mPAP and remodeling of pulmonary vessels and inhibit right ventricular hypertrophy in puhnonary arterial hypertension rats. Its efficacy is superior to that of monotherapy.
出处
《中华医学杂志》
CAS
CSCD
北大核心
2013年第22期1691-1695,共5页
National Medical Journal of China
基金
国家科技支撑计划
关键词
高血压
肺性
野百合碱
药物疗法
联合
贝前列素
辛伐他汀
Hypertension, pulmonary
Monocrotaline
Drug therapy, eombination
Beraprost
Simvastatin