摘要
本研究旨在观察7月龄雄性羊驼脑垂体的组织结构,为研究其内分泌功能提供形态学依据。3只7月龄未性成熟的雄性羊驼,解剖取出脑垂体制作标本,应用光镜和透射电镜技术观察其结构。结果显示,羊驼垂体位于颅底蝶骨构成的很浅的垂体窝内,与水牛相似,为椭圆形小体,背侧平,腹侧凸,由腺垂体(包括远侧部、结节部和中间部)和神经垂体组成,存在垂体裂和不发达的垂体腔;远侧部约占矢状总面积的近40%～45%,中间部和神经部也较发达;远侧部嗜酸性细胞、嗜碱性细胞和嫌色细胞所占比例为8∶1∶11;电镜下观察到羊驼脑垂体远侧部中的生长激素细胞、促甲状腺激素细胞、促肾上腺皮质激素细胞、促性腺激素细胞和滤泡细胞,且生长激素细胞数量最多。结果提示,7月龄雄性羊驼脑垂体结构与大多数哺乳动物相似,但有其特有的结构特征。
To research the morphology of alpaca pituitary and provide morphological basis for the endocrine function of alpaca pituitary. In this study, 7-month-old male alpaca pituitary was observed by the light microscope and transmission electron microscope. The results showed that alpaca pituitary located in pituitary fossa of the skull sphenoid were similar to the buffalo pituitary. It was ellipse, dorsal calm, gastro convex, and was composed of adenohypophysis（pars distalis, pars tuberalis, pars intermedia）and neurohypophysis, and existed pituitary cleft and undeveloped pituitary coelom. Pars distalis was 40%-45% of sagittal aera, and pars intermediate and pars nervosa rather developed, the ratio of oxyphil cell, basophilic cell and chromophobe cell was 8∶1∶11 in the pars distalis of alpaca pituitary. Somatotroph, thyrotroph, corticotroph, gonadotroph and follicular cell of the pars distalis of alpaca pituitary were found by transmission electron microscope, and somatotrophs was most. The results showed that pituitary structure of the 7-month-old alpaca was similar to that of most mammals, but had its unique characteristics.
出处
《畜牧兽医学报》
CAS
CSCD
北大核心
2010年第6期778-784,共7页
ACTA VETERINARIA ET ZOOTECHNICA SINICA
基金
山西省科技攻关项目(20080311034)
关键词
羊驼
垂体
远侧部
神经垂体
alpaca
pituitary
pars distalis
neurohypophysis
