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Perspectives on fish gonadotropins and their receptors.
TLDR
Recombinant fish GtHs were produced for carp, seabream, channel and African catfish, goldfish, eel, tilapia, zebrafish, Manchurian trout and Orange-spotted grouper, where FSHR expression in Leydig cells explains the strong steroidogenic activity of FSH in certain fish species.
Molecular Identification and Functional Characterization of the Kisspeptin/Kisspeptin Receptor System in Lower Vertebrates1
TLDR
The results indicate that the Kiss1/Kiss1r system may participate in puberty initiation in fish as well, like human KISS1R, which transduces its activity via the PKC pathway, whereas Kiss1rb does so via both PKC and PKA pathways.
Regulation of fish gonadotropins.
TLDR
GnRH increases the steady-state levels of GPalpha, LHbeta, and FSHbeta mRNAs, and the effect of these peptides on the expression of the gonadotropin subunit genes is transduced differentially.
Pathogenesis of Acute Viral Disease Induced in Fish by Carp Interstitial Nephritis and Gill Necrosis Virus
TLDR
The virus causing the disease from sick fish, propagated it in koi fin cell culture, and shown that virus from a single clone causes lethal disease in carp and koi upon infection are called carp interstitial nephritis and gill necrosis virus.
Neurokinin Bs and neurokinin B receptors in zebrafish-potential role in controlling fish reproduction
TLDR
Results suggest that the NKB/NKBR system may participate in neuroendocrine control of fish reproduction and be conserved among the fish species when tested in silico.
Enhancing spawning in the grey mullet (Mugil cephalus) by removal of dopaminergic inhibition.
TLDR
The data suggest that dopaminergic inhibition is a major barrier along the reproductive axis that arrests spontaneous spawning in captive mullets.
Differential and gonad stage-dependent roles of kisspeptin1 and kisspeptin2 in reproduction in the modern teleosts, morone species.
TLDR
The first report in fish to demonstrate the alternating actions and the importance of both neuropeptides for reproduction and the organization of the kisspeptin system suggests a transitional evolutionary state between early to late evolving vertebrates.
Development of specific enzyme-linked immunosorbent assay for determining LH and FSH levels in tilapia, using recombinant gonadotropins.
TLDR
Plasma levels of both FSH and LH increased during the second day after the eggs had been removed, probably related to the vitellogenic phase, and LH levels increased toward spawning, which occurred on the 11th day.
Spawning induction in common carp (Cyprinus carpio) using pituitary extract or GnRH superactive analogue combined with metoclopramide: analysis of hormone profile, progress of oocyte maturation and
TLDR
Data compiled from several spawning experiments showed that the interval between hormone administration and initial egg release (latency) was negatively correlated with water temperature over the range of 20-26°C and in each treatment it was nonetheless constant between 22.5 ’ C and 25 ” C.
Temporal expression of G-protein-coupled receptor 54 (GPR54), gonadotropin-releasing hormones (GnRH), and dopamine receptor D2 (drd2) in pubertal female grey mullet, Mugil cephalus.
TLDR
QPCR results showed that the early stage of puberty in grey mullet is characterized by significantly high levels of expression of GPR54, GnRH and drd2 in the brain relative to the intermediate and advanced stages, except for GnRH1 that increased at the advanced stage ofuberty.
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