家鸽消化道5-羟色胺细胞的形态与分布  

The Shape and Distribution of 5-HT Cells in Digestive Tract of Columba livia domesticus

作　　者：曹雷[1] 李淑兰[1] 

机构地区：[1]哈尔滨师范大学生命科学与技术学院,哈尔滨150025

出　　处：《中国农学通报》2009年第21期69-72,共4页Chinese Agricultural Science Bulletin

基　　金：黑龙江省教育厅科研项目"黑龙江省林蛙冬眠期前后消化道内分泌细胞的比较研究"(11531230)

摘　　要：采用ABC(avidin-biotin-peroxidase complex)免疫组织化学方法,观察家鸽(Columba livia domes-ticus)消化道内5-羟色胺(5-HT)免疫阳性内分泌细胞的分布及形态。结果显示,除食管外,5-羟色胺细胞从胃到直肠各段均有分布。细胞分布密度呈波浪式,其中直肠部分布密度最高(5.20±1.94),回肠部次之(3.75±1.29),胃部最低(1.7±0.80)。5-HT阳性细胞广泛分布于消化道上皮细胞之间、上皮基部、腺泡上皮细胞之间。形态多样,呈圆形、锥体形、梭形等。结论:5-HT细胞分布型的形成与消化道各部位消化功能有关,5-HT细胞形态与其内、外分泌功能是相适应的。Immunohistochemical localization and morphology of 5-Hydroxytryptamine immunoreactive cells （5-HT cells） in the digestive tract of Columba livia domesticus have been investigated by using the ABC（avidin-biotin-peroxidase complex）immunostaining technique.The results indicated that the 5-HT positive immunoreactive cells could be observed throughout the digestive tract, from stomach to rectum. The density curve appeared wavelike and their density is the highest in the cardiac part of rectum（5.20±1.94） ,,followed by the ileum （4.55±3.14）. The lowest cell density is found in the stomach（1.7±0.80）.The 5-HT cells distribute at the bottom of epithelial cells, between epithelial cells, between glandular epithelial cells or in the lamina propria.The 5-HT cells have different shapes including round, shuttle-like, tapering and other shapes. Anthors suggest that 5-HT positive immunoreactive cells in the digestive tract of Columba livia domesticus should have both endocrine and exocrine functions. The evidence indicates that the distribution pattern of 5-HT cells may be related to digestive functions and that the morphological characteristics of 5-HT cells are correlated with their endocrine, exocrine functions.

关 键 词：家鸽 5-HT细胞 消化道 

分 类 号：S836[农业科学—畜牧学]