牦牛发情周期黄体组织结构的观察  

Observation on histological structure of corpus luteumin in the yak during estrous cycle

作　　者：蒙学莲[1] 余四九[1] 崔燕[1] 刘学荣[2] 

机构地区：[1]甘肃农业大学动物医学院,甘肃兰州730070 [2]中国农业科学院兰州兽医研究所,甘肃兰州730046

出　　处：《中国兽医学报》2007年第4期586-590,共5页Chinese Journal of Veterinary Science

基　　金：国家自然科学基金资助项目(39970546)

摘　　要：选用48头成年母牦牛,采用光镜和电镜技术对发情周期中不同时期黄体的组织结构进行了观察。结果表明,牦牛黄体主要由2种细胞组成,即颗粒黄体细胞(granulasa lutein cell,GLC)和膜黄体细胞(theca lutein cell,TLC),其特征性变化主要表现在GLC和纤维的分布。成熟黄体中GLC及其胞核的平均直径分别为36.6μm和15.2μm,而TLC则分别为14.4μm和10.9μm。黄体细胞胞质中线粒体的比例随黄体的成熟而增高;脂滴在期黄体时较多,期时减少,期时显著增多,后又减少;滑面内质网也随黄体的成熟而增加,并随黄体的退化发生膨胀。黄体组织中有同心圆状或同心轮状的粗面内质网膜系统。黄体细胞间主要是缝隙连接,偶见中间连接。黄体组织中存在窗孔型毛细血管。Corpus lutea of forty-eight adult female yaks removed at various periods during estrous cycle were observed under the light and electron microscope. The results showed that the corpus lutea was consisted of two types of luteal cells,granulosa lutein cell （GLC）and theca lutein cell （TLC）. They were mainly characterized by the variation in GLC and fiber distribution. The average diameter of GLC in the mature corpus lutea was 36μm,with its nucleus of 15.2 μm;while that of TLC was 14.4μm and 10. 9μm,respectively. The proportion of mitochondria in luteal cells increased with the maturing of corpus lutea . Numbers of lipid droplets were higher in phase Ⅰ ,and got to decline in phase Ⅱ ;increased extremely in phase Ⅱ ,and decreased again in phase Ⅳ. The number of SER also increased with the maturing of corpus lutea ,and became swollen with the degeneration of corpus lutea. Some RER formed cocentic circle,there were SER in the center of this structure. The junctions among luteal cells were similar in different stages,and the gap junction was dominant ,occasionally the intermediate junction was found. Fenestrate capillary was present in the corpus luteum.

关 键 词：牦牛 发情周期 黄体 组织结构 

分 类 号：S858.23[农业科学—临床兽医学]