Distribution of the Ghrelin Hormone Producing Cells in the Gastro- intestinal Tract of Some Birds (Immunohistochemical Study)

Document Type : Original Article

Authors

1 Department of Cytology and Histology, Faculty of Veterinary Medicine, Suez Canal University

2 Graduate School of Biosphere Science, Hiroshima University.

Abstract

Ghrelin hormone is a novel 28 - amino acid has recently discovered in birds in 1999. Ghrelin is a hormone produced by endocrine cells in the gas- trointestinal tract. It stimulates growth hormone secretion, promotes food intake and energy ex- penditure. The distribution and morphologic char- acteristics of ghrelin – containing cells in the gas- trointestinal tract of goose, ducks, chicken, quails and ostrich was investigated by immunocytochem- istry. Ghrelin – immunopositive (ip) cells were lo- cated in the mucosa of the proventriculus, duode- num, jujenum, ileum and cecum of goose and duck, while in chicken, the ghrelin positive cells were mainly localized in the proventriculus and few cells were scattered in the small and large intes- tine. In quail and ostrich, the cells only found in the proventriculus. The numbers of the positive cells were numerous in goose and duck, than that in the chicken, quails and ostrich.

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