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Please use this identifier to cite or link to this item: http://tvhdh.vnio.org.vn:8080/xmlui/handle/123456789/19753

Title: Changes in brain seabream GnRH mRNA and pituitary seabream GnRH peptide levels during ovarian maturation in female barfin flounder
Authors: Amano, Masafumi
Pham, Xuan Ky
Amiya, Noriko
Yamanome, Takeshi
Yamamori, Kunio
Keywords: Fish
Barfin flounder
Ovarian maturation
Verasper moseri
GnRH
mRNA
Issue Date: 2008
Series/Report no.: General and Comparative Endocrinology, Volume 158, Issue 2, 1 September 2008, Pages 168–172;http://www.sciencedirect.com/science/article/pii/S0016648008002499
Abstract: The pleuronectid barfin flounder Verasper moseri expresses three forms of gonadotropin-releasing hormones (GnRHs), i.e., seabream GnRH (sbGnRH), salmon GnRH, and chicken GnRH-II. Among these, sbGnRH is the dominant form in the pituitary, indicating that sbGnRH regulates gonadal maturation. In order to clarify the physiological roles of sbGnRH during ovarian maturation in reared female barfin flounder, the changes in brain sbGnRH mRNA levels and pituitary sbGnRH peptide levels were examined by real-time quantitative PCR and time-resolved fluoroimmunoassay, respectively. The fish hatched in April 2002. The gonadosomatic index remained low until August 2004 and increased thereafter until April 2005 when the fish began to ovulate. The sbGnRH mRNA levels per brain increased significantly from April 2004 to April 2005. Pituitary sbGnRH peptide levels also increased significantly during this period. These results indicate that sbGnRH is involved in ovarian maturation and ovulation in the barfin flounder.
URI: http://113.160.249.209:8080/xmlui/handle/123456789/19753
Appears in Collections:Công bố khoa học ở tạp chí quốc tế - International research papers (Bibliographic record and/or full-text)

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