摘要
本文用免疫组织化学ABC法,对豚鼠消化道多巴胺(DA)免疫反应阳性内分泌细胞和神经的分布进行了研究。DA免疫反应阳性内分泌细胞分布在胃幽门、小肠和结肠。细胞密度在十二指肠最大,从空肠到结肠逐渐减少。胃幽门的细胞密度和回肠的相类似。DA免疫反应阳性的神经纤维,主要分布在胃、小肠和结肠的粘膜下层及固有层。在胃和结肠,DA阳性神经纤维较少,在小肠固有层,特别是在绒毛固有层内,DA阳性神经纤维较丰富。有时可见到小肠固有层DA阳性神经纤维延伸到小肠腺上皮和粘膜上皮内,分布于上皮细胞之间,提示小肠腺及粘膜上皮细胞直接受DA阳性神经纤维支配。
The distribution of dopamine-immunoreactive endocrine cells and nerves in the digestive tract of guinea-pigs was examined with the ABC immunostaining technique.
Dopamine-immunoreactive endocrine cells were observed in the pyloric antrum, small intestine and colon. The highest density of the positive ceils was found in the duodenum. From the jejunum to the colon the number of immunoreactive cells gradually decreased. A similar population of the positive cells was seen in the antrum and colon. Dopamine-immunoreactive nerve fibres were mainly located in the lamina propria and submucosa of the digestive tract. There were more positive fibres in the small intestine than in the stomach and colon. The dense networks of immunoreactive fibres were demonstrated in the villi. Some positive nerve fibres penetrated into the superficial and glandular epithelia. This representation indicated that the epithelial cells were directly innervated with the dopamine containing nerves.
出处
《解剖学报》
CAS
CSCD
北大核心
1992年第2期191-194,共4页
Acta Anatomica Sinica
关键词
免疫组织化学
消化道
豚鼠
Nervous fibers
Endocrine cells
Dopamine
Immunohistochemistry
Digestive tract
Guinea-pig
