首页 | 本学科首页   官方微博 | 高级检索  
   检索      

大鼠与家兔生后各年龄阶段跖肌纤维的比较
引用本文:朱道立.大鼠与家兔生后各年龄阶段跖肌纤维的比较[J].四川动物,2006,25(4):718-725,F0002.
作者姓名:朱道立
作者单位:南通大学生命科学学院,江苏南通,226007
基金项目:Acknowledgements: The research was institutionally supported by the Educational Department of Jiangsu Province.
摘    要:应用建立在肌球蛋白重链异构体基础上的标准肌动球蛋白ATP酶和琥珀酸脱氢酶组织化学方法,分析大鼠和家兔出生后发育各年龄阶段跖肌纤维型分布。在生后2周至24周龄的大鼠和家兔Ⅰ、ⅡX型肌纤维百分比例减少,而ⅡA、ⅡB型纤维则增加。进行大量单肌纤维的组织化学特征的比较和相关性探讨。结果显示动物平均体重与跖肌的平均湿重随生后发育逐渐增加,Ⅰ、ⅡX、ⅡA及ⅡB型纤维均在生后各年龄组的全部肌肉内被发现,但出生后2日龄组是个例外。在生后发育期间,雄性大鼠和家兔ⅡB型纤维的平均肌纤维型构成要大于雌性大鼠和家兔,而雄性大鼠和家兔Ⅰ、ⅡX、ⅡA型三种氧化组织化学分类的肌纤维型构成均小于雌性大鼠和家兔。大鼠Ⅰ、ⅡX、ⅡA和ⅡB型纤维的平均横切面积显然要比家兔的同类型肌纤维要小。在大鼠和家兔可见明显的性别差异。大鼠和家兔的ⅡX型纤维横切面积是最小的,Ⅰ、ⅡA型纤维呈中等大小,ⅡB型纤维最大。该重要的测试有助于我们深入研究啮齿类动物快肌纤维生理特征的适应。

关 键 词:骨骼肌纤维  啮齿动物  生后发育  组织化学
文章编号:1000-7083(2006)04-0718-08
收稿时间:2005-11-17
修稿时间:2005-11-172006-08-11

Comparison of Plantaris Muscle Fibers from Rats and Rabbits during Postnatal Different Ages
ZHU Dao-li.Comparison of Plantaris Muscle Fibers from Rats and Rabbits during Postnatal Different Ages[J].Sichuan Journal of Zoology,2006,25(4):718-725,F0002.
Authors:ZHU Dao-li
Institution:School of Life Sciences, Nantong University, Nantong, Jiangsu Province 226007
Abstract:The distribution of muscle fibers classified on the basis of their content of different myosin heavy chain (MHC) isoforms was analysed in muscle samples from the plantaris muscles of postnatal different ages of rats and rabbits by correlating standard actomyosin ATPase and succinic dehydrogenase SDHase histochemistry. The percentage of type I, IIX fibers of rats and rabbits decreased whereas that for type ⅡA, IIB fibers increased from postnatal 2 weeks to 24 weeks old. The histochemical characterization of larger number of single fibers was compared and correlated on a fiber-to-fiber basis. The results showed that the mean bodyweight and the average wet weight of the plantaris muscles was gradually increased with postnatal developments. Type I, IIX, IIA and IIB fibers were found in all muscles of postnatal different age groups except postnatal 2 days. Mean fiber type composition of type IIB fiber of male rats and rabbits was larger than that of female rats and rabbits during postnatal development. Three oxidative histochemically-classified fibers composition of type I, IIX, IIA fiber in male rats and rabbits were smaller than that of female rats and rabbits. The mean cross-sectional areas of type I, IIX, IIA and IIB fiber in rats were significantly smaller than those of rabbits. There were evident sexual distinction of rats and rabbits. In rats and rabbits, Type IIX fiber had the smallest cross-sectional area. Type I, IIA fibers had the intermediate in area and type IIB fibers had the largest. This has important implications in attempts to study the physiological properties of fast fiber types adequately in rodents.
Keywords:skeletal muscle fiber  rodent  postnatal development  histochemistry
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号