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《Acta Hydrobiologica Sinica》 2005-03
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IMMUNOHISTOCHEMICAL STUDY ON ENDOCRINE CELLS IN THE GASTRO-ENTERO-PANCREATIC SYSTEM OF CHINEMYS REEVESII

HUANG Xu-Gen,WU Xiao-Bing,ZHANG Zhi-Qiang and ZHANG Sheng-Zhou(College of Life Sciences,Anhui Normal University,Wuhu 241000)  
Identification,localization,distribution and morphology of edocrine cells in the gastro-entero- pancreatic system of Chinese three keeled pond turtleChinemys reevesii were studied in streptavidin peroxidase(S-P)immunohistochemical method with six gut hormone antisera.Four types of edocrine cells were founded in the pancreas of C.reevesii,namely:5-Hydroxytryptamine(5-HT),somatostatin (SS),glucagon (Glu),polypeptidem (PP)edocrine cells.SS and Glu cells mainly distributed collectively in the pancreas islet with large quantity.On the other hand 5-HT and PP cells scatterly located in the pancreas alveoli with small quantity.Gastrin(Gas)and Substance P(SP) cells were not detected in the pancreas of C.reevesii,Five types of edocrine cells were obsesued in the digestive tract of C.reevesii, they were 5-HT,SS,Gas,Glu and SP cells.5-HT cells distributed throughout the digestive tract,with the highest density in the duodenum(30.7±4.2),the second highest in the jejunum,and the lowest in the Ileum and rectum(12.0±1.0/11.2±3.0).SS cells mainly located in the each region of stomach,and occasionally occurred in the esophagus.Gas cells were mainly detected in the stomachus pyloricus and also have a few in the duodenum.Glu cells were presented from stomachus corpus to jejunum with the highest density in the stomachus pyloricus(11.3±1.1).Substance P cells were only found in the stomachus pyloricus. Cells showing immunoreactivity to PP were not detected in the digestive tract of C.reevesii.Comparing with other reptiles ,some common features in distribution of endocrine cells in the gastro-entero-pancreatic system of C.reevsii were found,which exist in digestive physiology,but the difference among them was also significant.
【Fund】: 安徽省优秀青年基金;; 重要生物资源保护与利用安徽省重点实验室专项基金;; 安徽省学术与技术带头人专项基金;; 安徽省高校青年基金及安徽师范大学校青年基金
【CateGory Index】: S966.5;
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