畜牧兽医学报2011，Vol.42Issue(12)：1776-1781,6.
成年牦牛小肠结构及黏膜免疫相关细胞数量变化研究
Study on the Structure and Quantitative Changes of Mucosal Immunity-associated Cells in Small Intestine of the Adult Yak
摘要
Abstract
In order to reveal the structure and the distribution and number changes of small intestinal immunity in the adult yak, the morphological structure and intraepithelial lymphocytes, goblet cells, plasma cells and mast cells of small intestine of adult yak were investigated by histo-chemical technique, the scion image software analysis techniques and the electron microscope technique. The results showed that there were mucousmembrane, submucosa, tunica muscularis and serosa in small intestine of the yak. The ratio of high/crypt depth and the thickness of tunica muscularis of duodenum is the highest; the high of villi and the crypt depth of jejunum are the longest and highest. They are significantly differed that the high of villi, the crypt depth, the ratio of high/crypt depth and the thickness of tunica muscularis in each segment of small intestine(P<0. 01). The number of intraepithelial lymphocytes, goblet cells and mast cells reduced gradually from duodenum, jejunum to ileum, but the number of plasma cells exhibits an increasing trend, which are significantly differed(P <0. 01). In the electron microscope, there are tight junction, gap junction and hemidesmosome, a lot of microvillus in small intestine of the yak. The nucleus of intraepithelial lymphocytes is larger and cytoplasms is less. Goblet cells are typical goblet shape, its top are larger because of a number of secretory granules; Plasma cells are circular or elliptical, the chromatin is distributed along the nuclear membrane, cytoplasms are richer in endoplasmic reticulum; Mast cells are elliptical, there are strong electron density particles in its cytoplasm. Digestion and absorption of arctic-alpine pasture are enhancing greatly by the structure of small intestine in the yak; there are regular distributions of mucosal immunity-associated cells in each segment of small intestine, showing strong mucosal immunity.关键词
牦牛/小肠结构/上皮内淋巴细胞/杯状细胞/浆细胞/肥大细胞Key words
yak/ structure of small intestine/ intraepithelial lymphocyte/ goblet cell/ plasma cell/mast cell分类
农业科技引用本文复制引用
左愈臻,高世杰,邵建华,方梅,贾宁..成年牦牛小肠结构及黏膜免疫相关细胞数量变化研究[J].畜牧兽医学报,2011,42(12):1776-1781,6.基金项目
甘肃省教育厅规划项目(0902-07) （0902-07）
