Abstract:

To study the immunohistochemical localization of 5 kinds of endocrine cells including somatostatin (SS), gastrin (Gas), Glucagon (Glu), pancreatic polypeptide (PP) and substance P-(SP) in the digestive tract of Takydromus amurensis. The ABC immunostaining technique was used. The results showed that: SS positive cells distributed throughout the digestive tract except the oesophagus. The stomach’s distribution of density was higher than that in the intestine. Gas cells were observed only in the pylorus, duodenum and jejunum in the digestive tract of Takydromus amurensis. Glu cells were observed in the stomach, pylorus and small intestine, and the distribution of the density of Glu cells in the pylorus was obviously higher than the two other parts. PP cells were detected in the stomach, pylorus and duodenum in the digestive tract of Takydromus amurensis, and the distribution density was the highest in the section of duodenum. SP cells were found only in the stomach. The forms of endocrine cells were various, mostly round, cone-shaped, spindle-shaped. The distributive density of endocrine cells was related to its function of each part of the digestive tract. The morphology of which were conformable with the endocrine and exocrine functions.