Sci Rep:肾上皮细胞形状依赖的细胞学毒性和二水草酸钙晶体结石风险

2017-08-09 AlexYang MedSci原创

肾上皮细胞损伤引起晶体保留进而导致肾结石的形成。然而,晶体形状对细胞损伤和结石风险的影响仍旧不清楚。最近,有研究人员比较了具有不同形状的二水草酸钙(COD)晶体对人类肾脏近端小管上皮细胞的细胞学毒性程度,从而阐释晶体形状对细胞损伤的影响以及说明草酸钙肾结石的病理学机制。研究人员通过对细胞活性、细胞膜完整度、细胞形态变化、细胞内活性氧种类、线粒体膜电势(Δψm)以及细胞凋亡或者坏死率来调查暴露于十字

肾上皮细胞损伤引起晶体保留进而导致肾结石的形成。然而,晶体形状对细胞损伤和结石风险的影响仍旧不清楚。最近,有研究人员比较了具有不同形状的二水草酸钙(COD)晶体对人类肾脏近端小管上皮细胞的细胞学毒性程度,从而阐释晶体形状对细胞损伤的影响以及说明草酸钙肾结石的病理学机制。

研究人员通过对细胞活性、细胞膜完整度、细胞形态变化、细胞内活性氧种类、线粒体膜电势(Δψm)以及细胞凋亡或者坏死率来调查暴露于十字形COD(COD-CS)、花状COD(COD-FL)、双锥体状COD(COD-BD)和细长双锥体状COD(COD-EBD)晶体的HK-2细胞的影响。研究发现,具有较多表面(100)的晶体(COD-EBC)和锋利边缘(COD-CS)的晶体要比COD-BD和COD-FL具有更高的毒性。COD晶体的暴露可以引起细胞膜破坏,从而上调细胞内活性氧,减少 Δψm。这一系列的现象最后导致了高凋亡率和低坏死率。另外,具有较多活性表面的晶体具有较大的与上皮细胞表面接触的区域,并且具有锋利边缘的晶体可以轻易的擦伤上皮细胞。这些因素可以促进晶体的黏附和聚合,从而增加结石风险。

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    2017-08-12 一个字-牛

    学习了谢谢分享

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