摘要
应用7种特异性胃肠激素抗血清对扬子鳄（Alligatorsinensis）消化道内分泌细胞进行了免疫组织化学定位。5-羟色胺细胞在消化道各段都有分布，以十二指肠密度最高，食道、直畅其次。生长抑素细胞在胃幽门部非常密集，胃体中等，胃贲门部较少，十二指肠偶见。胃泌素细胞主要分布于十二指肠前段，空肠、回肠和直肠偶见。许多血管活性肠肽细胞分布于胃贲门部，胃体和胃幽门部少数。胰高血糖素、胰多肽和P-物质在消化道各段均未检出阳性细胞。结合扬子鳄的食性，对内分泌细胞的分布型进行了讨论。
The distribution and density of the endocrine cells in the digestive tract of Alligator sinensis were studied by immunohistochemical method with seven antisera of gut hormone. 5-Hydroxytryptamine (5-HT)-immunoreactive cells are distributed throughout the digestive tract with the highest density in the duodenum, the second highest in the oesophagus and rectum. Somatostatin-immunoreactive cells occured very numerously in the stomachus Pyloricus, moderately in the stomachus corpus, rarely in the stomachus cardiacus and occasionally in the duodenum. The gastrin-immunoreactive cells were located numerously in the duodenum and occasionally in the jejunum, ileum and rectum.The vasoactive intestinal polypeptide(VIP)-immunoreaetive cells were present mainly in the stomachus cardiacus, rarely in the stomachus corpus and pyloricus. Cells showing immunoreactivity to pancreatic polypeptide, glucagon and substance-P were not detected. Considering the feeding habit, the distributive mode of endocrine cells in the digestive tract of Alligator sinensis was discussed.
出处
《动物学报》
SCIE
CAS
CSCD
1999年第2期155-161,共7页
ACTA ZOOLOGICA SINICA
基金
安徽省自然科学基金!95-生-01
关键词
扬子鳄
消化道
内分泌细胞
免疫组织化学
Alligator sinensis, Digestive tract, Endocrine cells, Immunohistochemistry
