丹参酮ⅡA磺酸钠抑制野百合碱致肺动脉高压大鼠肺动脉平滑肌过氧化物酶体增殖物激活受体γ表达的研究  被引量:10

Tanshinone II A sulfonate upregulated pulmonary artery smooth muscle peroxisome proliferator- activated receptor γ expression in monocrotaline induced pulmonary hypertension rat

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作  者:江倩[1] 陈豫钦[1] 陈秀庆[1] 张杰[1] 卢文菊[1] 王健[1] 

机构地区:[1]呼吸疾病国家重点实验室(广州医科大学附属第一医院)广州呼吸疾病研究所,510120

出  处:《中华结核和呼吸杂志》2014年第5期360-364,共5页Chinese Journal of Tuberculosis and Respiratory Diseases

基  金:基金项目:国家自然科学基金重大国际合作项目(81220108001);国家自然科学基金面上项目(81070043,81173112);广东省自然科学基金团队项目(1035101200300000);广东省教育厅科技创新重点项目(exzd1025);广州市教育局羊城学者项目(12A001S)

摘  要:目的观察丹参酮ⅡA磺酸钠(STS)对野百合碱致肺动脉高压大鼠模型的影响,探讨STS对肺动脉平滑肌组织中过氧化物酶体增殖物激活受体(PPAR)γ蛋白表达的影响。方法SD大鼠20只按随机数字表法分为对照组、对照+STS组、野百合碱组和野百合碱+STS组,每组5只。野百合碱组和野百合碱+STS组使用野百合碱诱导建立大鼠肺动脉高压模型,对照+STS组和野百合碱+STS组给予STS干预21d,右心测压法检测右心室收缩压(RVSP)及平均压(mRVP);计算右心肥厚指数[RV/(LV+S)];取右肺组织行HE染色并测量小动脉血管管腔,计算血管中膜厚度百分比(WT%),Western blot法检测远端肺动脉平滑肌组织中PPA脚蛋白的表达。结果与野百合碱组[(81.2±1.9)、(28.6±2.0)mmHg(1mmHg=0.133kPa)]比较,野百合碱+STS组大鼠RVSP和mRVP降低[(35.4±8.3)、(14.1±5.4)mmHg(P〈0.05)]。对照组和对照+STS组的右心肥厚指数分别为0.33±0.02和0.34±0.02,野百合碱组明显较高(0.57±0.04,P〈0.05),野百合碱+STS组与野百合碱组相比较低(0.43±0.02,P〈0.05)。与对照组比较,野百合碱组血管腔占血管区域的比值从(56±3)%降至(27±6)%,WT%由(20±4)%增加至(40±3)%,(P〈0.05),野百合碱+STS组血管腔占血管区域的比值和WT%分别为(39.0±2.0)%和(31.0±2.0)%,与野百合碱组比较差异有统计学意义(P〈0.05)。野百合碱组大鼠肺动脉平滑肌组织PPARγ蛋白与对照组的相对表达量为(48±4)%,差异有统计学意义(P〈0.05)。野百合碱+STS组大鼠肺动脉平滑肌组织中PPARγ蛋白的表达为正常对照的(102±3)%,与野百合碱组相比表达增加(P〈0.05)。结论STS能显著降低野百合碱诱导的肺动脉高压大鼠模型的右心室收缩压、平均压�Objective To investigate the effect of sodium tanshinone II A sulfonate (STS) on rat right ventrieular systolic pressure ( RVSP ), mean right ventrieular pressure ( MRVP ), right ventricular hypertrophy index [ RV/( LV + S ) ] , pulmonary vascular remodeling, and PPARγ protein expression in pulmonary artery smooth muscle of monocrotaline ( MCT ) induced rat pulmonary hypertension model. Methods The pulmonary hypertension model was established by subcutaneously injection of MCT, and the rats were treated with or without STS for 21 days. After that, RVSP, mRVP and RV/( LV + S) were measured. Lung histopathological sections were prepared, and the lumen area, the wall thickness and arterial radius of pulmonary arteries were quantified using the Image Pro Plus 6. 0 software. PPARγ protein expression in rat pulmonary artery smooth muscle was detected by Western blot. Results Compared with control group, the RVSP, mRVP were significantly increased in MCT group ( P 〈 0. 05 ), while in the MCT + STS group,it was decreased from (81.2 ± 1.9) and (28.6 ± 2. 0) mmHg to ( 35.4 ±8.3 ) and ( 14. 1 ± 5.4) mmHg, respectively ( P 〈 0. 05 ). The RV/( LV + S) of MCT group was ( 0. 57 ± 0.04 ) , markedly higher than those of control group and control + STS group ( 0. 33 ± 0. 02 ) and ( 0. 34 ± 0. 02 ), respectively, P 〈 0. 05 ,while in MCT + STS group, the RV/( LV + S) was (0. 43 ± 0. 02 ) , lower than that of MCT group ( P 〈 0. 05 ) ; The luminal area/total area of MCT group decreased to ( 27 ± 6 ) % compared with control rats (56. 00 ± 3.00 ) % ( P 〈 0. 05 ). The wall thickness/artery radius ( WT% ) of MCT group increased from (20 ±4)% (control group) to(40 ±3)% (P 〈0. 05). In MCT + STS treated rats,luminal area/ total area and WT% were ( 39. 0 ± 2. 0 ) % and ( 31.0 ± 2. 0 ) %, both statistically different from MCT group ( P 〈 0. 05 ). The level of PPARγ protein in pul

关 键 词:丹参酮ⅡA磺酸钠 野百合碱 高血压 肺性 过氧化物酶体增殖物激活受体Γ 

分 类 号:R285.5[医药卫生—中药学]

 

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