局部麻醉 lidocaine 在 vitro 在人的角膜的 stromal 房间导致 apoptosis

• 作者: Hao-Ze Yu Rui-Xin Wang Ting-Jun Fan Xin Zhou Yi-Han Li
• 来源期刊: 国际眼科杂志：英文版
• 学科: 医学
• 关键词: LIDOCAINE apoptosis-inducing effect APOPTOTIC body DNA FRAGMENTATION human CORNEAL STROMAL cell
• 年，卷（期）: 2013,（6）
• 页码范围: 766-771
• 页数: 6页
• 分类号: R614

摘要

AIM:To demonstrate the apoptosis-inducing effect of iidocalne on human corneal stromal(HCS)cells fn vitm,and provide experimental basis for safety anesthetic usage In clinic of ophthalmology.METHODS:In vitro cultured HCS cells were treated with lidocaine at different doses and times,and their morphology was monitored successively with inverted phase contrast microscopy.The membrane permeability of them was detected by acridine orange/ethidium bromide(AO/EB)double staining.The DNA fragmentation of them was examined by agarose gel electrophoresis,and their ultrastructure was observed by transmission electron microscopy(TEM),respectively.RESULTS:Exposure to lidocaine at doses from0.3125g/L to 20g/L induced morphological changes of HCS cells such as cytoplasmic vacuolation,cellular shrinkage,and turning round,and elevated membrane permeability of these cells in AO/EB staining.The change of morphology and membrane permeability was doseand time-dependent,while lidocaine at dose below0.15625g/L could not induce these changes.Furthermore,lidocaine induced DNA fragmentation and ultrastructural changes such as cytoplasmic vacuolation,structural disorganization,chromatin condensation,and apoptotic body appearance of the cells.CONCLUSION:Lidocaine has significant cytotoxicity on human corneal stromal cells in vitro in a dose-and time-dependent manner by inducing apoptosis of these cells.The established experimental model and findingsbased on this model here help provide new insight into the apoptosis-inducing effect of local anesthetics in eye clinic.