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JACC:晚期心衰患者的成纤维化一定程度上可逆

2019-05-13 不详 MedSci原创

间质纤维化是导致心衰患者收缩和舒张功能不全的重要原因之一,而其依赖于纤维母细胞到肌成纤维细胞(MyoFb)的激活和分化。近期的临床研究表明晚期心衰的纤维化是不可逆的。本研究的目的旨在评估晚期心衰MyoFb的分化程度。本研究从因缺血性心脏病或扩张型心肌病心脏移植患者的左室中分离出成纤维细胞,置于培养基中培养4-8天。细胞表型的鉴定包括功能实验、免疫染色和分化标志物的表达量检测。分析结果显示,心衰患者

间质纤维化是导致心衰患者收缩和舒张功能不全的重要原因之一,而其依赖于纤维母细胞到肌成纤维细胞(MyoFb)的激活和分化。近期的临床研究表明晚期心衰的纤维化是不可逆的。本研究的目的旨在评估晚期心衰MyoFb的分化程度。

本研究从因缺血性心脏病或扩张型心肌病心脏移植患者的左室中分离出成纤维细胞,置于培养基中培养4-8天。细胞表型的鉴定包括功能实验、免疫染色和分化标志物的表达量检测。分析结果显示,心衰患者的间质纤维化很明显,且存在MyoFb的激活,组织的转化生长因子(TGF)-β1、赖氨酸氧化酶、骨膜蛋白和骨桥蛋白表达水平升高,从心衰患者分离的成纤维细胞主要由MyoFb组成,且高表达促纤维化的细胞因子,且TGF-β1通路被激活。抑制TGF-β1受体激酶可促进心衰患者成纤维细胞的去分化,并将促纤维化的细胞因子降至非心衰水平。

研究结果显示,晚期心衰患者的肌成纤维细胞分化程度不一,在一定程度上是可逆的。

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    2020-03-17 hbwxf
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