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目的:探讨瞬时受体电位M7通道(transient receptor potential melastatin 7,TRPM7)在血小板源性生长因子(platelet derived growth factor,PDGF)和5-羟色胺(5-hydroxytryptamine,5-HT)诱导的肺动脉平滑肌细胞(pulmonary artery smooth muscle cells,PASMCs)异常增殖中的作用。方法:利用贴块法和酶解法分离大鼠PASMCs。采用RT-PCR、Western blot和全细