期刊论文

The Comparison of the Thyroarythenoid Muscle and Posterior Cricoarytenoid Muscle between Young and Old Rats

中文

听力学及言语疾病杂志

1006-7299

2020

28

04

419-422

10.3969/j.issn.1006-7299.2020.04.015

湖北省自然科学基金（2014CFB729）；

本校为其他机构

目的比较青年兔与老年兔甲杓肌和环杓后肌的组织结构变化,探讨喉内肌与老年嗓音的关系。方法以健康8月龄雄性大白兔(青年兔)和自然衰老的30月龄大白兔(老年兔)各5只作为研究对象,全麻下取其甲杓肌和环杓后肌,HE染色观察两组甲杓肌和环杓后肌肌纤维的横截面积、直径和计数;透射电镜下观察肌纤维的超微结构,比较两组结果。结果青年兔和老年兔甲杓肌的横截面积分别为128±24μm~2和110±27μm~2,直径分别为21.8±3.2μm和20.8±3.4μm,肌纤维计数分别为1 548±117条/mm~2和1 375±74条/mm~2;环杓后肌的横截面积分别为91.5±19μm~2和87.6±14μm~2,直径分别为20.8±4.2μm和20.4±3.2μm,肌纤维计数...

Objective To compare the structure of the thyroarythenoid muscle(TA)and posterior cricoarytenoid muscle(PCA)of young and old rats,and to study the role of the PCA and TA in presbyphonia.Methods Five rats of 8months old were choosed as young group,and 5rats of 30months old were old group.The PCA and TA were isolated.The diameter,cross-sectional area and numbers of the muscle fibers were collected.The ultra microstructure of PCA and TA were observed with TEM.Results The cross-sectional area and numbers of the muscle fibers of TA in old rats were obviously decreased comparing with those of young ...