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               ·1032 ·                           南 京    医 科 大 学 学         报                        2021年7月


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              原过度沉积导致组织顺应性下降,最终出现二尖瓣                            [6] DE KROON L M,NARCISI R,VAN DEN AKKER G G,
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              现。本研究中扫描电镜观察显示腱索断裂患者病                                  than SMAD2 in TGFβ⁃induced chondrogenic differentia⁃
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              时,致密层(内层)也可见明显裂隙。心脏超声中                                 ⁃specific TGF⁃β⁃Smad2/3 signaling underlies cardiac fi⁃
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