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22대 대한민국 국회 국회정보길라잡이 국회의원검색
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Artificial sexual maturation of eel (Anguilla japonica) involves rearing in seawater and injecting salmon pituitary extract (SPE). The salinity of seawater and components of SPE influence hormonal activities of the eel pituitary, leading to gonad development. This study investigated the direct effects of salinity change and SPE treatment on the eel pituitary gland using primary cell cultures. Pituitary cells were cultured into four experimental groups: control culture (control), SPE-treated culture (SPE), NaCl-treated culture (NaCl) and NaCl+SPE treated culture (NaCl+SPE). We investigated the expression of genes presumably related to reproduction and/or salinity, including luteinizing hormone (LHβ), follicle stimulating hormone (FSHβ), progesterone receptor-like (pgrl), prolactin (PRL), dopamine receptor D4 (drd4), neuropeptide B/W receptor 2 (NPBWR2) and relaxin family peptide receptor 3-2b (rxfp3-2b). Gene expression analysis revealed significant upregulation of LHβ in SPE and NaCl+SPE groups compared to control and NaCl (p＜0.05). FSHβ expression did not show any significant changes. PRL showed a significant decrease in the NaCl group (p＜0.05). Pgrl, NPBWR2, drd4, and rxfp3-2b displayed the highest expression in the control group, with downregulation observed in all treatment groups (NaCl, SPE, and NaCl+SPE) (p＜0.05). This study demonstrated the direct effects of salinity changes and SPE treatment on the eel pituitary. Results from this study also suggest that salinity change is necessary but work together with SPE to induce reproductive process, and that LHβ, pgrl, PRL, drd4, NPBWR2, and rxfp3-2b genes are obviously associated with reproduction and salinity changes in eels.

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기사명 저자명 페이지 원문 목차
Autotaxin expression in the uterus of cycling rats Hye-Soo Kim, Sung-Ho Lee p. 67-74

Effect of salinity and salmon pituitary extract on the expression of reproduction and/or salinity-related genes in the pituitary cells of Japaneses eel Seong Hee Mun, Joon Yeong Kwon p. 75-86

Banana peel extracts enhance climbing ability and extend lifespan in Drosophila melanogaster Hyejin Seo, Jong-Won Yoon, Younghwi Kwon, Eunbyul Yeom p. 87-94

Characteristics of morphological changes in fins according to larval growth of red spotted grouper, Epinephelus akaara Hee-Kyung Jung, Chi-Hoon Lee, Young-Don Lee p. 95-108

Actin depolymerizing factor destrin regulates cilia development and function during vertebrate embryogenesis Youni Kim, Hyun-Kyung Lee, Kyeong-Yeon Park, Tayaba Ismail, Hongchan Lee, Hyun-Shik Lee p. 109-119

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