Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides.

Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides. Research Abstract Details 

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Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides. Abstract Text:

S L Hsieh,H C Chuang,F H Nan,Y H Ruan,C M Kuo,S L Hsieh,H C Chuang,F H Nan,Y H Ruan,C M Kuo,

The objective of this study was to investigate the molecular mechanisms of gonadotropin-releasing hormone receptor (GnRH-R) involved in the endocrine regulation of reproduction in the orange-spotted grouper, Epinephelus coioides. The full-length cDNA encoding GnRH-R type I was successfully cloned from the pituitary by reverse-transcription polymerase chain reaction (RT-PCR) and rapid amplification of cDNA end (RACE) methods in the grouper. The complete GnRH-R type I cDNA is 1607 bp, which includes an open reading frame of 1092 bp encoding a protein of 364 amino acids, a seven-alpha helix transmembrane domain, a N-terminal extracellular domain, and a C-terminal cytoplasmic domain. The expression of GnRH-R type I was found to be highest in the pituitary. An intramuscular injection of various GnRH types in vivo was attempted. The expression of GnRH-R type I was stimulated by a single injection of salmon GnRH, while in the case of chicken GnRH II treatment, the expression of GnRH-R type I was inhibited. This suggests that the action of chick GnRH II is probably enhanced through the GnRH receptor of different forms. Furthermore, none of them were expressed by an injection of seabream GnRH, and this is likely attributed to the injection dose being below the threshold level, and this remains to be further examined. In conclusion, GnRHs of various types are effective in stimulating the expression of gonadotropins through various forms of the GnRH-R, and multiple forms of the receptor gene likely exist in teleosts.

Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides. Publishing Authors By Initials

SL Hsieh,HC Chuang,FH Nan,YH Ruan,CM Kuo,SL Hsieh,HC Chuang,FH Nan,YH Ruan,CM Kuo,

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Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: Comparative biochemistry and physiology. Part B, B

VOLUME: 147

Page Numbers: 209-21

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ISSN: 1096-4959

DAY: 24

MONTH: 01

YEAR: 2007

Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides. Information

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LANGUAGE: eng

NlmUniqueID: 9516061

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Grant and Affiliation Information for Molecular cloning and gene expression of the gonadotropin-releasing hormone receptor in the orange-spotted grouper, Epinephelus coioides.

AFFILIATION: Department of Nutrition and Health Science, Fooyin University, Kaohsiung 831, Taiwan.

Country: England

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MEDLINETA: Comp Biochem Physiol B Biochem

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