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钙通道激动剂BayK8644对急性肺损伤大鼠PAR-1表达的影响 被引量:1

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摘要 目的探讨内毒素所致急性肺损伤后大鼠蛋白酶激活受体-1(PAR-1)的动态表达及钙通道激动剂Bay K8644的干预作用。方法将80只大鼠随机分为10组(n=8),即正常组、内毒素所致肺损伤0.5 h、1 h、2 h和4 h组和激动剂干扰后对照组,肺损伤0.5 h、1 h、2 h和4 h组。用内毒素制备大鼠急性肺损伤模型。免疫组化方法测定各时间点大鼠肺组织PAR-1蛋白的表达;RT-PCR检测PAR-1 mRNA的表达。结果正常组大鼠可见少量PAR-1 mRNA表达,模型组大鼠内毒素所致肺损伤后PAR-1 mRNA表达随损伤时间的延长而增加(P<0.01)。经钙通道激动剂Bay K8644干预后,内毒素所致肺损伤各时间组内PAR-1 mRNA的表达均有不同程度的下降(P<0.05),但PAR-1 mRNA的表达在钙通道激动剂Bay K8644干预组内仍随着损伤时间的延长而增加(P<0.05)。结论在内毒素致肺损伤的4 h内,早期有针对性地使用钙通道激动剂Bay K8644可增加钙离子内流,有一定的肺保护作用。
出处 《广东医学》 CAS 北大核心 2016年第18期2730-2733,共4页 Guangdong Medical Journal
基金 广东省自然科学基金资助项目(编号:S2013010011535)
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