Authors : Omer Atalar and Ali Bayrakdar
Abstract: This study aimed to determine the existence and distribution of serotonin and certain neuropeptides in proventriculus and gizzard of the long-legged buzzard by using peroxidase anti-peroxidase complex immunohistochemical technique. In both proventriculus and gizzard, serotonin, Somatostatin-14 (SOM-14), Substance P (SP) and Calcitonin Gene Related Peptide (CGRP)-IR endocrine cells were determined. However, Cholecystokinin-8 (CCK-8), neurotensin, Neuropeptide Y (NPY), galanin and Vasoactive Intestinal Polypeptide (VIP)-IR endocrine cells were not found in any region of the stomach. Serotonin-IR endocrine cells were detected in the epithelium and glands of both stomach regions however, they were more intense in the glands of gizzard. Numerous in number SOM-14-IR endocrine cells were detected in the glands of the stomach. A few SP-IR endocrine cells were detected in the epithelium of the whole stomach and in the glands of gizzard. Moderate CGRP-IR endocrine cells were detected only in the epithelium of whole stomach. In conclusion, serotonin, SOM-14, SP and CGRP were detected to exist in the proventriculus and gizzard of the long-legged buzzards for the first time in the present study. It was also found that this species has been found to differ from other types of some avian species.
Omer Atalar and Ali Bayrakdar, 2011. Existence of Serotonin and Neuropeptides-Immunoreactive Endocrine Cells in the Stomach (Proventriculus and Gizzard) of Long-Legged Buzzard (Buteo rufinus): An Immunohistochemical Study. Journal of Animal and Veterinary Advances, 10: 3140-3148.