足细胞相关分子在多柔比星肾病大鼠模型中mRNA的表达及意义  被引量:1

Expression and significance of podocyte molecules mRNA in Doxorubicin - induced nephrotic rats

在线阅读下载全文

作  者:黄逸辉[1] 于力[1] 王辉阳[1] 于生友[1] 蒋罗 张瑶[1] 

机构地区:[1]广州医科大学附属广州市第一人民医院儿科,510180

出  处:《中华实用儿科临床杂志》2016年第5期345-348,共4页Chinese Journal of Applied Clinical Pediatrics

基  金:国家自然科学基金(81273205);国家科技支撑计划项目(2012BA103802)

摘  要:目的探讨。肾小球足细胞相关分子podocin、nephrin、CD2AP和α-actin-4在多柔比星肾病(ADN)大鼠模型肾皮质部的mRNA表达及意义。方法建立ADN大鼠模型,实验分为模型组(ADN组,24只)和对照组(正常大鼠组,24只),模型组经尾静脉注射多柔比星6.5mg/kg,对照组注射等量9g/L盐水,分别在1、2、4和6周各处死6只大鼠,并观察各项指标的变化:(1)24h尿蛋白定量、血浆清蛋白(Alb)和总胆固醇(TC);(2)采用荧光定量PCR检测肾皮质部podocin、nephrin、CD2AP和α-actin-4的mRNA表达。结果模型组出现高蛋白尿,在1、2、4、6周时分别为(15.66±1.50)mg/24h、(45.98±1.45)mg/24h、(65.58±4.68)mg/24h、(82.83±8.43)mg/24h;低清蛋白血症,在1、2、4、6周时分别为(27.4±2.5)g/L、(23.6±2.9)g/L、(20.6±1.5)g/L、(6.9±2.3)g/L;高脂血症,在1、2、4、6周时分别为(2.00±0.25)mmol/L、(2.16±0.44)mmol/L、(4.02±0.81)mmol/L、(7.54±1.12)mmol/L,各时间点蛋白尿、血浆清蛋白及总胆固醇与对照组比较差异均有统计学意义(P均〈0.01)。表现为典型的肾病综合征。模型组podocin在肾皮质部的mRNA表达1周(10.56±3.62)时开始下降,2周(20.44±9.03)时明显下降,4周(2.19±0.18)后较对照组下降;模型组neph—rin的mRNA表达1周(2.41±1.10)时下降达峰值,4周(0.52±0.18)后下降;模型组CD2AP的mRNA表达1周(4.17±0.79)时无明显改变,2周(6.74±1.53)时下降,4周(6.91±1.13)时下降达峰值,6周(4.04±0.82)时无明显改变;模型组α-actin-4的mRNA表达1周(1.75±0.48)时无明显改变,2周(2.01±0.55)时下降,4周(2.24±0.81)时下降达峰值,6周(1.39±0.18)时无明显改变,与对照组比较差异均有统计学意义(P�Objective To observe the expression of mRNA of podocin, nephrin, CD2AP and α - actin -4 in Doxorubicin - induced nephrotic (ADN) rats, and explore the possible mechanisms of podocyte molecule during the de- velopment of proteinuria. Methods Forty - eight Sprague - Dawley (SD) rats were divided into ADN model group( in- jected with 6.5 mg/kg Doxorubicin in tail vein, n = 24 )and control group (injected with saline solution in tail vein, n = 24). After the nephropathy model was established ,6 rats were killed at the end of 1 st ,2nd ,4th,6th week in each group. The changes of the following indicators were observed : ( 1 ) 24 - hour urinary protein, serum albumin and cholesterol were detected;(2)mRNA expression of nephrin, podocin, CD2AP and α- actin- 4 in cortex of kidney were examined by real time fluorescence quantification PCR. Results The model group came out massive proteinuria ( 15.66 ± 1.50) mg/24 h,(45.98±1.45) mg/24 h,(65.58 ±4.68) mg/24 h,(82.83 ±8.43) mg/24 h in 1,2,4,6 weeks respec- tively, hypoalbuminemia (27.4 ± 2.5 ) g/L, (23.6 ±2.9) g/L, ( 20.6± 1.5 ) g/L, ( 6.9 ± 2.3 ) g/L in 1,2,4,6 weeks respectively and hypercholesterolaemia (2.00 ± 0.25 ) mmol/L, (2. 16 ±0. 44) mmol/L, (4.02±0.81 ) mmol/L, (7.54 ±1.12) mmol/L in 1,2,4,6 weeks respectively, and the differences of proteinuria, plasma albumin and total cholesterol compared with control group at each time point had statistical significance( all P 〈 0.01 ). Compared with the control group,podocin mRNA expression in the model group decreased at the end of 1st week( 10.56 ± 3.62), de- creased significantly at the end of 2nd week (20.44 ± 9.03 ), and decreased at the end of 4th week( 2.19 ± 0.18 ) com- pared with the control group;nephrin mRNA expression decreased at the end of 1st week(2.41 ± 1.10)and reached to the peak value, decreased at the end of 4th week (0.52±0.18 ) ;CD2AP mRNA expression did not change significantly in the 1 s

关 键 词:PODOCIN NEPHRIN CD2AP α—actin-4 足细胞 蛋白尿 

分 类 号:R726.9[医药卫生—儿科] R-332[医药卫生—临床医学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象