子宫骶韧带成纤维细胞受力后超微结构变化特征初步研究

目的:通过电镜观察成纤维细胞受力后超微结构变化,初步了解盆底组织成纤维细胞应力损伤后形态结构的变化特征。方法:选取北京大学人民医院因子宫良性病变行开腹子宫切除术8例患者,术中切取骶韧带0.8～1cm,以组织块法进行成纤维细胞原代培养,传代后进行细胞加载、加力,利用透射电镜分别观察应力后细胞形态变化和超微结构特征。结果:透射电镜观察细胞持续应力2h后,胞膜表面微绒毛和胞浆皱褶增多,至持续应力12h时达最多,应力24h时有减少趋势。应力2h后,可见胞质中粗面内质网增生现象,分泌泡增多;应力8h,可见线粒体增生,体积增大;应力12h,粗面内质网明显增生,甚至扩张,个别线粒体外室轻度肿胀,呈圆形、长椭圆形或不规则形;应力24h,粗面内质网增生程度较前好转,但部分出现扩张,融合。结论:应力可使粗面内质网、线粒体增生,甚至扩张,可使细胞微绒毛和胞浆皱褶增多,提示可能与细胞合成和分泌蛋白增加以及代谢增加有关,应力可引起细胞骨架的改变。

Ultrastructure characteristics of uterus sacral ligament fibroblasts under strain

Objective:Electronic microscopic analysis of the primary culture sacral ligament fibroblasts under stain was done in order to reveal the changes of cell ultrastructure by strain-induced damage.Methods:Eight patients who underwent abdominal hysterectomy for uterine benign lesions were included in the study.0.8~1cm sacral ligament was cut during the operation.Primary sacral ligament fibroblasts were isolated.After mechanical loading,transmission electron microscopy(TEM)was employed to observe the stress chang...