中文摘要：

目的探讨正常人眼视网膜色素上皮(RPE)细胞毒蕈碱1型(M1)受体的表达情况和M1受体对维持RPE细胞功能的作用及其与近视发生、发展的关系。方法采用已建立的RPE细胞的分离和培养方法建立细胞培养株。取传3~5代生长良好的细胞,应用逆转录聚合酶链反应(RT-PCR)、间接免疫荧光法(IIF)检测培养的RPE细胞中M1受体的表达情况。结果培养的RPE细胞呈多边形,平均分裂时间约2~3d,细胞内含有棕黄色素颗粒,随着细胞的分裂,细胞内的色素颗粒稀释和变少。RT-PCR和间接免疫荧光法检测,显示体外培养的人RPE细胞有M1受体表达。结论人RPE细胞有M1受体的分布。M1受体对维持RPE细胞的功能起重要作用。M1受体拮抗剂玻璃体腔注射以延缓近视的发生、发展机制可能与其抑制RPE细胞功能有关。

英文摘要：

Objective The aim of this study was to identify the presence of muscarinic acetylcholine receptors-1 (M1 receptor) in human retinal pigment epithelium (RPE) in order to determine the role of M1 receptor in the maintenance of function of RPE and its role in the occurrence and development of myopia. Methods The 3rd-5th passages of RPE cells established in our laboratory were used in the present study. Reverse transcription-polymerase chain reaction (RT-PCR) was used to detect mRNA expression of M1 receptor in...