结缔组织生长因子在烟雾暴露大鼠肺血管重塑中的作用  被引量:1

Role of connective tissue growth factor on pulmonary artery remodeling in rats exposed to smoke

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作  者:田锋[1] 徐永健[1] 张珍祥[1] 范新蕾 胡静[3] 

机构地区:[1]华中科技大学同济医学院附属同济医院呼吸内科卫生部呼吸疾病重点实验室,武汉430030 [2]山东医学专科学校内科教研室 [3]华中科技大学同济医学院附属同济医院呼吸内科 卫生部呼吸疾病重点实验室,武汉430030

出  处:《中华结核和呼吸杂志》2007年第12期921-925,共5页Chinese Journal of Tuberculosis and Respiratory Diseases

基  金:国家自然科学基金(30470759)

摘  要:目的研究烟雾暴露大鼠在体应用结缔组织生长因子(CTGF)反义寡核苷酸(ASON)对肺血管重塑的影响,探讨 CTGF 在烟雾暴露致肺血管重塑中的作用。方法 35只大鼠按随机数字表法分为正常对照组(A 组)、烟雾暴露1个月组(B 组)、烟雾暴露+大剂量 CTGF ASON 1个月组(C组)、烟雾暴露+小剂量 CTGF ASON 1个月组(D 组)、烟雾暴露2个月组(E 组)、烟雾暴露+大剂量CTGF ASON 2个月组(F 组)、烟雾暴露+小剂量 CTGF ASON 2个月组(G 组),每组5只。用苏木精-伊红(HE)染色观察肺血管重塑;用免疫组化法观察 CTGF 在肺动脉中的表达;用逆转录-聚合酶链反应(RT-PCR)检测肺动脉 CTGF mRNA 表达。采用 SPSS 12.0软件,数据以±s表示,组间差异显著性检验采用方差分析,两两比较采用 q 检验,相关分析采用直线回归法,P<0.05为差异有统计学意义。结果 (1)A 组肺动脉管壁面积/管总面积(WA%)为(28.6±1.2)%、B 组为(42.5±2.3)%、C组为(33.7±1.8)%、D 组为(42.1±2.4)%、E 组为(49.6±2.1)%、F 组为(34.3±1.9)%、G 组为(38.4±2.0)%。C 组与 B 组比较差异有统计学意义(q=5.09,P<0.01),F、G 组与 E 组比较差异均有统计学意义(q 值分别为8.15、3.75,P 均<0.05);(2)A 组肺动脉平滑肌 CTGF 蛋白表达吸光度(A)值为0.098±0.015、B 组为0.159±0.023、C 组为0.118±0.017、D 组为0.153±0.022、E 组为0.406±0.036、F 组为0.109±0.012、G 组为0.146±0.024。C 组与 B 组比较差异有统计学意义(q=3.26,P<0.05),F、G 组与 E 组比较差异均有统计学意义(q 值分别为67.08、18.09,P 均<0.01);(3)A 组肺动脉 CTGF mRNA 表达为0.051±0.010、B 组为0.823±0.096、C 组为0.216±0.056、D 组为0.810±0.085、E 组为2.452±0.267、F 组为0.207±0.062、G 组为0.509±0.067。C 组与 B 组比较差异有统计学意义(q=53.50,P<0.01),F、G 组与 E 组比较差异均有统计学意义(q 值分别为132.22、93.70,P 均<0.01)。结论应用 CTGF ASON 可显著降低烟雾暴露诱导的大鼠肺血Objective To explore the role of connective tissue growth factor (CTGF) on pulmonary artery remodeling induced by smoke exposure in rats. Methods Thirty-five male Wistar rats were randomly assigned into a control group (A group), a smoke exposure one month group (B group), a smoke exposure and high dose CTGF antisense oligonucleotide (ASON) one month group ( C group) , a smoke exposure and low dose CTGF ASON one month group ( D group), a smoke exposure two month group ( E group), a smoke exposure and high dose CTGF ASON two month group (F group) , and a smoke exposure and low dose CTGF ASON two month group (G group ). Pulmonary artery remodeling was observed by hematoxylin-eosin staining, and the CTGF mRNA expressions of pulmonary arteries were evaluated by RT-PCR. Immunohistochemistry methods were performed to determine CTGF protein expression in pulmonary artery smooth muscle. The difference between the groups was analyzed. Results (1) The pulmonary artery WA% of the seven groups were respectively (28.6 ± 1.2)%, (42.5 ± 2.3)%, (33.7 ± 1.8)%, ( 42. 1 ± 2.4 ) %, (49.6 ± 2. 1 ) %, ( 34, 3 ± 1.9 ) % and ( 38.4 ± 2.0 ) %. There was significant difference between B group and C group ( q =5.09, P 〈0. 01 ), Compared to E group, there were significant decreases in F group and G group (q=8. 15, 3.75, all P〈0.05). (2) The CTGF protein expressions (A value) of pulmonary artery smooth muscle were respectively 0.098 ± 0.015, 0. 159 ± 0.023, 0. 118 ± 0.017, 0. 153±0.022, 0.406 ± 0.036, 0. 109 ± 0.012 and 0. 146 ± 0.024. There was significant difference between B group and C group ( q = 3. 26, P 〈 0. 05 ). Compared to E group, there were significant decreases in F group and G group (q =67.08, 18.09, all P〈0.01). (3) The CTGF mRNA expressions (AcTcF/ Aβ-actin) of pulmonary artery were respectively 0. 051 ± 0. 010, 0. 823 ± 0. 096, 0. 216 ± 0. 056, 0. 810 ± 0. 085, 2. 452 ± 0. 267, 0. 207 ± 0. 062 and

关 键 词: 平滑 血管 结缔组织生长因子 烟雾 反义寡核苷酸 肺动脉重塑 

分 类 号:R543.2[医药卫生—心血管疾病]

 

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