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Upregulation of small GTPase RhoA in the basilar artery from diabetic (mellitus) rats.

机译:糖尿病(糖尿病)大鼠基底动脉中小GTPase RhoA的上调。

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The goal of this study was to determine whether RhoA, a small GTPase, might be involved in the development of cerebral pathogenesis in diabetes. Male SD rats (n = 120) were divided into six groups: diabetic for 2, 4, 8 weeks, and an age-matched control group. Diabetes was induced by intravenous injection of streptozotocin (50 mg/kg). RhoA mRNA expression in basilar artery was measured by competitive RT-PCR. RhoA mRNA level was significantly increased in 4 weeks (184.1 +/- 28.5%, n = 7) and 8 weeks (218.7 +/- 24.5%, n = 7) after STZ injection compared to the age matched control basilar arteries (P < 0.05). Western blot was used to measure the membrane binding RhoA level to represent the activity of RhoA. We found that RhoA activity was strikingly increased in the diabetic basilar artery (n = 10 in each groups) compared to control basilar artery after STZ injection. Our data demonstrated that there was an upregulation of RhoA in the basilar artery of STZ induced diabetic rats, suggesting that RhoA might be involved in the cerebral vascular pathogenesis during diabetes mellitus.
机译:这项研究的目的是确定小的GTPase RhoA是否可能参与糖尿病脑发病机制的发展。将雄性SD大鼠(n = 120)分为6组:糖尿病组持续2、4、8周,以及年龄匹配的对照组。静脉注射链脲佐菌素(50 mg / kg)可诱发糖尿病。通过竞争性RT-PCR测量基底动脉中RhoA mRNA的表达。与年龄相匹配的对照基底动脉相比,STZ注射后4周(184.1 +/- 28.5%,n = 7)和8周(218.7 +/- 24.5%,n = 7)RhoA mRNA水平显着增加(P < 0.05)。 Western印迹用于测量膜结合RhoA水平以代表RhoA的活性。我们发现与STZ注射后的对照组基底动脉相比,糖尿病基底动脉RhoA活性显着增加(每组n = 10)。我们的数据表明,STZ诱导的糖尿病大鼠基底动脉RhoA上调,提示RhoA可能与糖尿病期间脑血管的发病有关。

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