Abstract
Objective To observe the interaction of the calcifying nanoparticles (CNP) with human renal tubular epithelial cells (HK-2) in vitro,to observe and investigate the mechanisms of HK-2 injury induced by CNP,and to explore the potential role of CNP in the formation of Calcium oxalate kidney stones.Methods Human renal tubular epithelial cells were cultured in vitro and CNP was then added to the culture medium,the cell-crystal reaction was detected by light microscopy and transmission electron microscopy (TEM).To investigate the oxidative stress,NADPH oxidase inhibitor apocynin was chosen as the intervener.The levels of LDH,MDA,HA in the mediums after 24 h were assessed. Results CNP could induce changes of the HK-2.Adhesion and phagocytosis of CNP by the HK-2 were observed under TEM.After 24 h,the levels of LDH,MDA,HA were significantly different among the 4 groups ( P < 0.05 ). Conclusions HK-2 has abilities of adhering and phagocyting with CNP.CNP can cause damage induced by oxidative stress of HK-2. Key words: Kidney calculi; Nanoparticles; Calcifying nanoparticles; Human renal tubular epithelial cells; Oxidative stress
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