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Cited by (91)
Kisspeptin and GnRH interactions in the reproductive brain of teleosts
2020, General and Comparative EndocrinologyCitation Excerpt :This suggests that Gnrh cellular integrity is essential either because the Gnrh decapeptide is the bona fide hypophysiotropic regulator or the Gnrh neuronal system is a critical player in the complex neuronal network controlling reproduction. Moreover, it has been known for several decades that Lh release in vivo in the goldfish Carassius auratus, is linked to activation of Gnrh release (Yu et al., 1987) and activation of Gnrh receptors, since Gnrh antagonists block Lh release in vivo (Murthy et al., 1994). More recently, a new role for Gnrh3 in reproductive processes was uncovered.
Multimodal hypothalamo-hypophysial communication in the vertebrates
2020, General and Comparative EndocrinologyMultifactorial control of reproductive and growth axis in male goldfish: Influences of GnRH, GnIH and thyroid hormone
2020, Molecular and Cellular EndocrinologyCitation Excerpt :GnRH1 is the main pituitary regulator for mammals and includes the isoform found in humans (Okubo and Nagahama, 2008). GnRH2 is found in all vertebrate classes and is thought to be involved in changing behaviour, feeding activities, and energy balance due to expression found in a variety of regions in the mid brain (Yu et al., 1987; Schneider and Rissman, 2008; Xia et al., 2014). GnRH3 is found in teleost species and in the absence of GnRH1 expression, GnRH3 compensates and regulates pituitary action (Okubo and Nagahama, 2008).
GnRH mRNA levels in male three-spined sticklebacks, Gasterosteus aculeatus, under different reproductive conditions
2015, Comparative Biochemistry and Physiology -Part A : Molecular and Integrative PhysiologyCitation Excerpt :In previous reports, relations vary between reproductive conditions and the GnRH system of fish. No significant difference in GnRH2 and GnRH3 peptide contents in different brain areas was found between mature and immature rainbow trout (Oncorhynchus mykiss) (Okuzawa et al., 1990) or between mature and immature goldfish (Yu et al., 1987). However, in gilthead sea breams (S. aurata), red sea breams (Pagrus major) and European sea bass (Dicentrarchus labrax), the GnRH1 (sbGnRH) peptide levels in the pituitary increase during the spawning season (Holland et al., 1998; Senthilkumaran et al., 1999; Rodríguez et al., 2000).
Gonadotrophin-releasing hormone in winter flounder (Pseudopleuronectes americanus): Molecular characterization, distribution and effects of fasting
2013, General and Comparative EndocrinologyCitation Excerpt :It is possible that GnRH3 regulates appetite or has some other digestive functions in fish peripherally, since its transcript is present in stomach and intestine. However, no studies have examined whether the GnRH3 has other peripheral functions, aside from its roles in reproductive processes, including spermatogenesis and oogenesis [4,71,72,75]. Finally, qPCR expression analyses of GnRH transcripts comparing nutritional status demonstrate the relative abundance of mRNA in fed and fasted flounder for each of the GnRH peptides.
Effects of lamprey PQRFamide peptides on brain gonadotropin-releasing hormone concentrations and pituitary gonadotropin-β mRNA expression
2012, General and Comparative EndocrinologyCitation Excerpt :After 72 h from the first injection, each lamprey was decapitated and the brain and pituitary were removed and immediately snap frozen in liquid nitrogen and stored at −80 °C. Each lamprey brain was extracted for GnRH-I, -II, and -III as previously described [26] and modified [2,19]. One hundred and ten fractions, 1 ml each, were collected for each sample injected onto a HPLC [19].