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Ali Bayrakdar,Mine Yaman,Ramazan Ilgün 한국통합생물학회 2015 Animal cells and systems Vol.19 No.5
In this research, we aimed to determine the regional distribution and relative frequency of immunoreactive (IR) endocrine cells of ghrelin, glucagon, somatostatin–14 (SOM–14), neuropeptide Y (NPY), calcitonin-gene-related peptide (CGRP), insulin and galanin in small and large intestines of mole-rats (Spalax leucodon) by using immunohistochemical staining methods. For this purpose, small and large intestine regions of six adult mole-rats were used as material. In the small and large intestines of mole-rats (S. leucodon), ghrelin, glucagon, SOM–14, NPY and CGRP were identified at various frequencies, but insulin and galanin were not detected in this study. Ghrelin-IR cells were only observed in the small intestine. In addition, the existence of positive staining in the cells was decreased while passing from duodenum to ileum. Glucagon-IR cells were mainly detected in the small intestine regions and colon. SOM–14-IR cells were detected throughout the small intestines with a lesser frequency. NPY-IR cells were also detected in the small and large intestines at various frequencies but not in cecum and rectum. CGRP-IR cells were scarce in duodenum and jejunum, but their numbers increased from ileum to colon. In conclusion, the present study revealed the existence and distributions of neuropeptide-secreting endocrine cells in small and large intestines of mole-rats (S. leucodon).