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JACC:GATA3阳性巨噬细胞在心梗后重塑中的作用研究

2018-08-22 MedSci MedSci原创

巨噬细胞在心血管疾病的病理发生过程中起到重要作用。本研究的目的旨在探究GATA3阳性巨噬细胞在心梗后调节心脏功能方面的作用。本研究的小鼠模型为骨髓特异性敲除GATA3小鼠(mGATA3KO),心梗建模后,通过超声心动图对其进行心功能评估。结果发现,急性心梗建模后,GATA3阳性巨噬细胞在梗死区域快速聚集,GATA3阳性巨噬细胞的减少可以明显提高心梗后的心脏功能,这种心功能的改善与mGATA3KO小

巨噬细胞在血管疾病的病理发生过程中起到重要作用。本研究的目的旨在探究GATA3阳性巨噬细胞在心梗后调节心脏功能方面的作用。

本研究的小鼠模型为骨髓特异性敲除GATA3小鼠(mGATA3KO),心梗建模后,通过超声心动图对其进行心功能评估。结果发现,急性心梗建模后,GATA3阳性巨噬细胞在梗死区域快速聚集,GATA3阳性巨噬细胞的减少可以明显提高心梗后的心脏功能,这种心功能的改善与mGATA3KO小鼠心肌促炎症的Ly6Chi单核细胞数量增多相关,血清学分析结果显示在心梗前后两组小鼠的血清生长因子和细胞因子无明显变化。在体外培养的巨噬细胞中,GATA3可以被白介素4特异性激活,另外,巨噬细胞的GATA3可以降低精氨酸酶-1的表达。

研究结果显示,GATA3阳性巨噬细胞在心梗后心脏重塑中起到负面作用,该细胞的减少可以改善心梗后的心功能。

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    2019-06-25 zhaojie88
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    2019-03-19 lfyang
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    2018-08-24 智智灵药
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    2018-08-24 bbjsj_1981
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    2018-08-23 kafei

    学习了谢谢

    0

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