Immunohistochemical study on insulin, glucagon and somatostatin immunoreactive cells of the pancreas of the duck(Anas platyrhynchos platyrhyncos, Linne)

청둥오리 췌장의 insulin, glucagon 및 somatostatin 면역반응세포에 관한 연구

  • Lee, Jae-hyun (College of Veterinary Medicine, Kyungpook National University) ;
  • Ku, Sae-kwang (College of Veterinary Medicine, Kyungpook National University) ;
  • Lee, Hyeung-sik (Department of Biology, college of Natural Science, Kyungsan University)
  • 이재현 (경북대학교 수의과대학) ;
  • 구세광 (경북대학교 수의과대학) ;
  • 이형식 (경산대학교 자연과학대학 생물학과)
  • Received : 1998.02.14
  • Published : 1998.06.25

Abstract

The distributions and relative frequencies of insulin-, glucagon-, and somatostatin-immunoreactive cells in the pancreas of the duck(Anas platyrhynchos platyrhyncos, Linne) were investigated immunohistochemically on 23 days of incubation, at hatching, 1 week, 2 weeks, 3 weeks, 5 weeks, 6 weeks, 7 weeks, 9 weeks, 10 weeks, and 32 weeks after hatching. In the duck pancreas on 23 days of incubation and at hatching, mammalian type islets(mixed type) were only observed, thereafter three type's islets(mamalian, A and B type's islets) were identified. Insulin-immunoreactive cells were detected in central region of the islets, while glucagon- and somatostatin-immunoreactive cells were detected in marginal region of light(B type) or mammalian type islets, and in central region of dark islets(A type). Insulin-, and somatostatin-immunoreactive cells were also detected in the exocrine regions. In this region the insulin-immunoreactive cells were detected from 23 days of incubation to 6 weeks, however not detected after 7 weeks. At hatching the relative numbers of somatostatin-immunoreactive cells were more frequent than those of other groups, and then decreased with ages.