Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Comparative study of endocrine cells in the principal pancreatic islets of two teleosts, Silurus asotus (Siluridae) and Siniperca scherzeri (Centropomidae) | J. Vet. Sci. 2001 2 2 75-80 OURNAL OF Veterinary Science Comparative study of endocrine cells in the principal pancreatic islets of two teleosts Silurus asotus Siluridae and Siniperca scherzeri Centropomidae Jae-hyun Lee Sae-kwang Ku1 Ki-dae Park and Hyeung-sik Lee2 Laboratory of Histology College of Veterinary Medicine Kyungpook National University Taegu 702-701 Korea Pharmacol Toxicol Lab. Central Research Laboratories Dong-Wha Pharm. Ind. Co Anyang 430-017 Korea Department of Biology Faculty of Natural Sciences Kyungsan University Kyungsan 712-240 Korea The regional distribution and relative frequency of some endocrine cells in the principal pancreatic islets of two teleosts Silurus asotus Linne Siluridae and Siniperca scherzeri Steindachner Centropomidae which have similar feeding habits were observed using specific antisera against insulin glucagon somatostatin and bovine pancreatic polypeptide bovine PP using the peroxidase antiperoxidase PAP method. Spherical to spindle shaped cells were demonstrated in the principal pancreatic islets in both species of teleost fishes. However they were not detected in the exocrine portions nor the pancreatic ducts. Insulin-immunoreactive cells were located in the central regions of the principal pancreatic islets at high frequency in both species. Glucagonimmunoreactive cells were restricted to the peripheral regions of the principal pancreatic islets in both species. They formed a mantle zone in the peripheral regions of Silurus asotus with moderate frequency and occupied a narrower mantle zone in Siniperca scherzeri with moderate frequency. In addition glucagonimmunoreactive cell cores were also found in the peripheral zone of some principal pancreatic islets of Siniperca scherzeri. Somatostatin-immunoreactive cells were dispersed in the central zone of the principal pancreatic islets of Silurus asotus with moderate frequency but were located in the peripheral regions with low frequency in Siniperca scherzeri. Bovine .
