A successive study of histopathological changes in unilateral facial muscle denervation

目的研究单侧面肌失神经支配组织病理学改变。方法建立单侧面肌失神经支配动物模型，在失神经支配后1、3 d,1、2周,1、2、4、6个月制作面肌标本，改良Gomori三色染色观察线粒体变化；酶组化染色检测肌球蛋白ATP酶，还原型辅酶Ⅰ四唑氮还原酶（NADH-TR）；免疫组化染色检测肌球蛋白（Myosin），肌动蛋白（Actin）的表达；吖啶橙染色检测细胞内核酸含量变化。结果失神经支配初期线粒体功能加强、酶活性增高、收缩蛋白质表达增强；2周后，线粒体退化、肌纤维代谢活性降低、收缩蛋白质表达下降；1个月后肌纤维型分别开始转换；6个月组明显型组化，核酸量上升，并出现少量再生的肌纤维。结论单侧面肌失神经支配后发生典型的失神经萎缩，2～6个月有增殖改变，失神经支配1个月内是对抗肌萎缩的有利时机。To observe the histopathological changes in unilateral facial muscle denervation.Gomori trichrome stain, acridine orange (AO) fluorescence, enzyme-histochemistry and immunohistochemistry techniques were used for studying mitochondria, nuclei acid concentration, enzymatic activity and contraction protein expression of facial muscle in different denervation period.Mitochondrian function, enzymatic activity and contraction protein expression of facial muscle denervation increased in the first two weeks, then declined till 6 months. Myofiber's histotype began to transform in 1 month after denervation. Type-grouping was obvious in 6 month. Regeneration myofibers were also seen at this time.Unilateral facial muscles become atrophy after denervation. They have proliferating tendency from 2 month to 6 month. Therefore, within 1 month after denervation measures to benefit atrophy will be more effective.国家自然科学基金PubMed中文核心期刊要目总览(PKU)中国科学引文数据库(CSCD)03177-1793