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BCA法测肺动脉高压大鼠肺动脉平滑肌SR膜蛋白浓度 被引量:6

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摘要 目的测定肺动脉高压大鼠肺动脉平滑肌膜蛋白浓度。方法蔗糖梯度离心法对肺动脉平滑肌膜蛋白进行提取;二喹啉甲酸(Bicinchoninic acid,BCA)法测定膜蛋白浓度;G-6-Pase定量试剂盒测定平滑肌肌浆网(SR)标志酶G-6-Pase活性。结果经测定MCT组和对照组G-6-Pase活性分别为(19.5±2.41)IU/g和(18.35±2.21)IU/g,明显高于肺动脉平滑肌组织匀浆G-6-Pase活性(1.23±0.14)IU/g和(1.15±0.17)IU/g;测定波长为595 nm,在0.025~0.5mg/ml时,线性关系良好,r=0.997 6。结论提取的SR有较高纯度;BCA法可以用于平滑肌SR膜蛋白浓度的测定。
出处 《时珍国医国药》 CAS CSCD 北大核心 2010年第8期2124-2125,共2页 Lishizhen Medicine and Materia Medica Research
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