The localization and expression of gonadotropin inhibitory hormone in the hypothalamus of turkey hens during the prepubertal, pubertal and postpubertal phases
| Autor: | M. R. Jafarzadeh Shirazi, Mohammad Javad Zamiri, Kazuyoshi Tsutsui, Amir Akhlaghi, Mohammad Reza Namavar, Farzad Mohammad Rezazadeh, R. Manoochehri |
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| Rok vydání: | 2021 |
| Předmět: |
Turkeys
endocrine system medicine.medical_specialty medicine.drug_class media_common.quotation_subject Hypothalamus Neuropeptide Biology Gonadotropic cell Inhibitory postsynaptic potential Gonadotropin inhibitory hormone 03 medical and health sciences 0302 clinical medicine Endocrinology Food Animals Internal medicine medicine Animals Sexual Maturation media_common Neurons Hypothalamic Hormones 030219 obstetrics & reproductive medicine 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science medicine.anatomical_structure Female Animal Science and Zoology Gonadotropin Reproduction Nucleus hormones hormone substitutes and hormone antagonists |
| Zdroj: | Domestic Animal Endocrinology. 74:106486 |
| ISSN: | 0739-7240 |
| DOI: | 10.1016/j.domaniend.2020.106486 |
| Popis: | Gonadotropin inhibitory hormone (GnIH), initially discovered in birds as a hypothalamic neuropeptide, inhibits the synthesis and release of gonadotropins by affecting GnRH neurons and gonadotropes. Therefore, it may be a key neuropeptide in reproduction in birds. The aim of the present study was to investigate the prepubertal, pubertal, and postpubertal localization of GnIH and changes in hypothalamic GnIH expression in British United Turkey hens. In prepubertal, pubertal, and postpubertal periods, the brains of turkey hens (n = 15) were removed after fixation. Sections (30 μm) were prepared from the entire hypothalamus and stained immunohistochemically against GnIH antibody. Gonadotropin inhibitory hormone-immunoreactive neurons were observed in the paraventricular nucleus. These neurons were significantly more abundant in the prepubertal turkeys than pubertal and postpubertal turkeys (P0.05). The results suggested that GnIH neurons have an important role in regulating the pubertal events in British United Turkey hens. |
| Databáze: | OpenAIRE |
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