Journal ArticleDOI
Impact of estrogen and photoperiod on arginine vasotocin and VT3 receptor expression in the shell gland of quail.
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TLDR
Evidences indicate that the expression of shell gland AVT modulated by estrogen appears to play a priming role by modulating the availability of VT3 receptor for the required action of neurohypophysial AVT during oviposition.Abstract:
Role of estrogen and photoperiod is well-established in avian reproduction. In addition, the distribution and the expression of arginine vasotocin (AVT) and its receptor VT3 to ensure reproductive/breeding conditions in Japanese quail influenced by them has been the main focus of this review. To consider this aspect the mRNA expression of VT3 receptor and its ligand AVT in the shell gland has been emphasized. In birds, AVT performs a dual role as an anti-diuretic hormone and the functions accomplished by oxytocin in mammals. The physiological actions of AVT in birds are mediated through its diverse receptor subtypes VT1, VT2, VT3 and VT4. Dynamic alteration of VT3 expression during different reproductive and photo-sexual conditions of quail can be modulated by estrogen. In addition to the endocrine effect of AVT, the shell gland is complemented by its paracrine action via its receptors. Evidences indicate that the expression of shell gland AVT modulated by estrogen appears to play a priming role by modulating the availability of VT3 receptor for the required action of neurohypophysial AVT during oviposition.read more
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Book ChapterDOI
Reproduction in the female
TL;DR: In this paper, the authors described the current knowledge on development, morphology, and function of the female reproductive system of birds, including the cellular and molecular mechanisms underlying the regulation of follicle growth, selection, differentiation, ovulation, and regression as well as the molecular basis of egg formation.
Book ChapterDOI
Reproduction in the female
TL;DR: In this article , the authors described the current knowledge on development, morphology, and function of the female reproductive system of birds, including the cellular and molecular mechanisms underlying the regulation of follicle growth, selection, differentiation, ovulation, and regression as well as the molecular basis of egg formation.
Journal ArticleDOI
Withania somnifera inhibits photorefractoriness which triggers neuronal apoptosis in both pre-optic and paraventricular hypothalamic area of Coturnix coturnix japonica: involvement of oxidative stress induced p53 dependent Caspase-3 mediated low immunoreactivity of estrogen receptor alpha.
TL;DR: In this article , the authors investigated the estrogenic effects of a well-known medicinal plant Withania somnifera (WS), mediated by estrogen receptor alpha (ERα) in the hypothalamic pre-optic area (POA) and paraventricular nuclei (PVN).