首页> 外文期刊>Life sciences >Change in P-glycoprotein and caveolin protein expression in brain striatum capillaries in New Zealand obese mice with type 2 diabetes.
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Change in P-glycoprotein and caveolin protein expression in brain striatum capillaries in New Zealand obese mice with type 2 diabetes.

机译:新西兰肥胖小鼠脑纹状体毛细血管毛细血管中的p-糖蛋白和Caveolin蛋白表达的变化。

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AIMS: To investigate the expression of P-gp and caveolins in brain striatum capillaries in inbred mice with type 2 diabetes. MAIN METHODS: Inbred mice with type 2 diabetes (male New Zealand obese; NZO) were compared with related mice without diabetes (female NZO and New Zealand White). Protein expression of P-gp and caveolins in capillaries of the brain striatum was examined by immunohistochemical analysis. P-gp efflux pump activity in the blood-brain barrier (BBB) was measured by in vivo brain microdialysis. Regulation of P-gp and caveolin expression was examined in cultured adult rat brain endothelial cells (ARBEC). KEY FINDINGS: In capillaries in the brain striatum, expression of P-gp and caveolins was higher and lower, respectively, in mice with type 2 diabetes compared with non-diabetic mice. Brain extracellular concentrations of intravenously injected rhodamine 123 were more than 50-60% lower in type 2 diabetic mice. Insulin and PMA treatments significantly increased P-gp expression, whereas the same treatments decreased caveolin expression in ARBEC. SIGNIFICANCE: Protein expression of P-gp and caveolins can be regulated in animals with type 2 diabetes. These changes may be important in modulating P-gp activity in the BBB in type 2 diabetes.
机译:目的:探讨患有2型糖尿病患者脑纹状体毛细血管中P-GP和Cavolins的表达。主要方法:与2型糖尿病(男性新西兰肥胖; NZO)的近交小鼠与没有糖尿病的相关小鼠进行比较(雌性NZO和新西兰白)。通过免疫组化分析检查了脑纹状体毛细血管中P-GP和Cavolins的p-GP和Cavolins的蛋白质表达。通过体内脑微透析测量血脑屏障(BBB)中的P-GP Efflux泵活性。在培养的成年大鼠脑内皮细胞(ARBEC)中检测了P-GP和Caveolin表达的调节。主要发现:在脑纹状体中,在与非糖尿病小鼠相比,P-GP和Cavolins的表达分别较高,分别为2型糖尿病的小鼠。脑内静脉内注射的罗丹明123的脑细胞外浓度在2型糖尿病小鼠中较低50-60%。胰岛素和PMA治疗显着提高了P-GP表达,而相同的处理减少了arbec中的Caveolin表达。意义:P-GP和Cavolins的蛋白质表达可以在2型糖尿病的动物中调节。这些变化对于调节2型糖尿病中的BBB中的P-GP活性可能是重要的。

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