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首页> 外文期刊>International endodontic journal >Simvastatin alleviates bone resorption in apical periodontitis possibly by inhibition of mitophagy‐related osteoblast apoptosis
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Simvastatin alleviates bone resorption in apical periodontitis possibly by inhibition of mitophagy‐related osteoblast apoptosis

机译:辛伐他汀可通过抑制与乳化物相关的成骨细胞细胞凋亡的抑制来减轻骨牙周炎中的骨吸收

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Abstract Aim To assess the connection between mitophagy and hypoxia‐induced apoptosis in osteoblasts and whether simvastatin alleviates bone resorption in apical periodontitis through modulation of mitophagy‐related apoptosis. Methodology Hypoxia‐induced generation of reactive oxygen species in mitochondria and changes in mitochondrial membrane potential were evaluated, respectively, by Mito SOX and JC ‐1 fluorescence dye signalling. Accumulation of mitophagy markers PTEN ‐induced putative kinase 1 ( PINK 1) and Parkin in mitochondria was examined by Western blotting and immunofluorescence microscopy. Osteoblast apoptosis was assessed by Western analysis of cleaved‐poly (adenosine diphosphate ribose) polymerase ( PARP ). In a rat model of induced apical periodontitis, the therapeutic effect of simvastatin and its action on osteoblast mitophagy and apoptosis were examined. anova , Fisher's and Student's t ‐test were used for data analysis. Results Hypoxia‐induced mitochondrial dysfunction and stimulated mitophagy in osteoblasts. Hypoxia also provoked apoptosis in osteoblasts and inhibition of mitophagy decreased hypoxia‐augmented apoptotic activity. Simvastatin alleviated hypoxia‐induced mitochondrial dysfunction, mitophagy and apoptosis. The protective action of simvastatin against apoptosis was related to its antimitophagy activity. Experiments in the rat model of induced apical periodontitis supported the laboratory findings. Simvastatin treatment mitigated periapical bone loss and reduced the activities of apoptosis and mitophagy in regional osteoblasts. Conclusions The results suggest that modulation of osteoblast mitophagy may help diminish bone loss associated with inflammation and has potential as an auxiliary therapy for apical periodontitis.
机译:摘要旨在评估细菌细胞和缺氧诱导的细胞凋亡与辛伐他汀的联系,并通过调节与细胞质相关的细胞凋亡的调节来减轻骨吸牙痛中的骨吸收。方法缺氧诱导的线粒体中活性氧生成和线粒体膜电位的变化分别通过MITO SOX和JC -1荧光染料信号进行评价。通过蛋白质印迹和免疫荧光显微镜检查MITOphagy标志物的累积PTEN诱导的推定激酶1(粉红色1)和Parkin。通过对切割 - 聚(腺苷二磷酸核糖核糖)聚合酶(PARP)的西方分析来评估成骨细胞凋亡。在诱导顶端牙周炎的大鼠模型中,研究了辛伐他汀及其对骨盆细胞凋亡和细胞凋亡的治疗作用。 ANOVA,Fisher和学生的T -Test用于数据分析。结果缺氧诱导的线粒体功能障碍和刺激蛋白质中的菌毛细胞。缺氧也引发了成骨细胞的凋亡,抑制了缺氧增强的凋亡活性。辛伐他汀缓解了缺氧诱导的线粒体功能障碍,细菌和凋亡。辛伐他汀对细胞凋亡的保护作用与其抗菌活性有关。诱导顶端牙周炎大鼠大鼠模型的实验支持实验室发现。辛伐他汀治疗减轻了恐慌的骨质损失,降低了区域性成骨细胞中细胞凋亡和水肿的活性。结论结果表明,成骨细胞的调节可能有助于减少与炎症相关的骨质损失,并且具有辅助术牙周炎的辅助治疗。

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