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Involvement of GnRH and Gonadotropin Genes in Oocyte Development of Blue gourami Females (<i>Trichogaster trichopterus</i>)

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Advances in Biological Chemistry 2014年第3期4卷 197-202页

作者： Gad Degani School of Science and Technology Tel-Hai Academic College Tel Hai Israel

The goal of this study was to gain a fundamental understanding of RnRH 1 and 3, as well as FSH and LH action, in ovarian follicles during oocyte growth by examining changes in ovarian gene transcription in blue gourami females (Trichogaster trichopterus). The levels of target ovarian mRNAs were determined by quantitative real-time PCR. GnRH1 mRNA levels were higher in oocytes at the previtellogenic stage compared to the vitellogenic and follicular oocytes maturation (FOM) stages. No significant differences in GnRH3 mRNA levels were detected among oocytes during the different stages of development. βLH and βFSH mRNA levels were lower in oocytes at the vitellogenic stage compared to the previtellogenic stage. The high transcription of GnRH 1 and 3 in the brain and of FSH and LH in the pituitary of blue gourami as was found in previous studies in our laboratory, compared to mRNA levels changed in ovary during oogenesis, supporting the hypothesis that differences exist between the function of endocrine and autocrine/paracrine of these hormones.

关键词： GnRH and Gonadotropin Genes Blue gourami Females

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Somatolactin Transcription during Oogenesis in Female Blue gourami (<i>Trichogaster trichopterus</i>)

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Advances in Biological Chemistry 2015年第7期5卷 279-285页

作者： Gad Degani School of Science and Technology Tel-Hai Academic College Tel Hai Israel MIGAL—Galilee Technology Center Kiryat Shmona Israel

Somatolactin (SL), a specific pituitary hormone belonging to the prolactin (PRL) super family, is involved in background adaptation, osmoregulation, reproduction and fatty acid metabolism. The goal of this study was to examine the gene transcription of SL changes in the ovary of blue gourami females (Trichogaster trichopterus) during oogenesis by quantitative real-time polymerase chain reaction (Real-Time PCR). Somatolactin in the pituitary was higher in females at low vitellogenesis compared to females with oocytes in maturation, and the difference was significant (p gourami;however, considerably more studies are required in order to separate the functions of these hormones.

关键词： Female Blue gourami Oogenesis RNA Somatolactin

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Expression of SOX3 and SOX9 Genes in Gonads of Blue gourami

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Advances in Biological Chemistry 2014年第5期4卷 322-330页

作者： Gad Degani Faculty of Science and Technology Tel-Hai Academic College Kiryat Shmona Israel

In vertebrates, SOX (SRY-related HMG box) genes are thought to be due to major gene duplication events, initially occurring during early stages of metazoan evolution and later during the transition between non-vertebrate chordates and vertebrates. The aim of this study is to examine SOX3 and SOX9 transcription in oogensis and spermatogenesis in a fish model, the blue gourami (Trichogaster trichopterus). In females during oogenesis, SOX9 mRNA levels were lower compared to SOX3 mRNA levels. In males, SOX9 mRNA levels were higher in testes compared to SOX3 mRNA levels, however no significant differences between SOX3 and SOX9 mRNA levels were observed in the gonads of males that were kept under non-reproductive conditions compared to males kept with females under reproductive conditions and that were nest-builders.

关键词： SOX3 SOX9 mRNA and Blue gourami

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