• Corpus ID: 13823892

Evidence of a Reproduction-Related Function for Brine Kisspeptin 2 and its Receptors in Fish Trichogaster trichopterus

@inproceedings{Gad2017EvidenceOA,
  title={Evidence of a Reproduction-Related Function for Brine Kisspeptin 2 and its Receptors in Fish Trichogaster trichopterus},
  author={Degani Gad and Alon Amir and Stoler Aviad and Bercovich Dani},
  year={2017}
}
This paper describes the transcription of Kisspeptin2 (Kiss2) and Kiss receptors (GPR54 or Kiss2r, Kiss1r) in blue gourami (Trichogaster trichopterus), which belongs to the suborder Anabantoidei and family Osphronemidae. A low degree of identity cDNA acid sequences was found in homologous partial sequences Kiss2 and Kiss1r from a number of fish species as compared to the blue gourami sequence, however, the variation in Kiss2r and other fish species is much lower. In order to determine whether… 
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References

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TLDR
Analysis of Ss kiss1r revealed for the first time in any vertebrate KISS1R gene the presence of features that are characteristic of a mechanism of alternative splicing, which may contribute to the understanding of the many physiological functions suspected to be mediated by KISSPEPTIN-Kiss1R signaling.
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To ascertain the neuroendocrine function of the kisspeptin/GPR54 system in non-mammalian species, full-length cDNAs encoding for Kiss1 and Kiss2 as well as their putative cognate receptors GPR54a and
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TLDR
The data indicate that the kiss2 systems of zebrafish are implicated in reproductive events, while the kiss1 gene would play other functions that remain to be established.
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TLDR
The results suggest that the habenular Kiss1 and the hypothalamic Kiss2 are potential regulators of reproduction including puberty and that Kiss2 is the predominant regulator of gonadotropin synthesis in fish.
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TLDR
It is argued that the steroid sensitivity of the kiss1 or kiss2 neurons has been well conserved during evolution among tetrapods and teleosts, and thus it may be the key to understanding the functional homologies of certain populations of kisspeptin (kiss1 orkiss2) neurons among different species of vertebrates.
Expression of Kisspeptins and Kiss Receptors Suggests a Large Range of Functions for Kisspeptin Systems in the Brain of the European Sea Bass
TLDR
The data indicate that kiss2 neurons are mainly located in the hypothalamus and project widely to the subpallium and pallium, the preoptic region, the thalamus, the pretectal area, the optic tectum, the torus semicircularis, the mediobasal medial and caudal hypothalamus, and the neurohypophysis.
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TLDR
Kisspeptin signaling in the brain has been implicated in mediating the negative feedback action of sex steroids on gonadotropin secretion, generating the preovulatory GnRH/LH surge, triggering and guiding the tempo of sexual maturation at puberty, controlling seasonal reproduction, and restraining reproductive activity during lactation.
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