https://scholars.lib.ntu.edu.tw/handle/123456789/425205
標題: | Cantharidin and norcantharidin inhibit caprine luteal cell steroidogenesis in vitro | 作者: | Twu, Nae-Fang Srinivasan, Ramanujam CHUNG-HSI CHOU LEANG-SHIN WU CHIH-HSIEN CHIU |
關鍵字: | Cantharidin; Norcantharidin; Caprine; Luteal cells; Steroidogenesis | 公開日期: | 一月-2012 | 出版社: | ELSEVIER GMBH, URBAN & FISCHER VERLAG | 卷: | 64 | 期: | 1-2 | 起(迄)頁: | 37 | 來源出版物: | Experimental and toxicologic pathology : official journal of the Gesellschaft fur Toxikologische Pathologie | 摘要: | Cantharidin and its analog norcantharidin are active constituents of Mylabris, have been demonstrated to ailments for a variety of cancers. But several reports of cantharidin's natural or accidental toxicoses in field animals and humans showed a strong connection between cantharidin and its abortifacient and aphrodisiac properties. However, their exact cellular mechanisms in steroidogenesis remains poorly understood. Thus this study was aimed to explore the effects of cantharidin on luteal cell steroidogensis and to compare its effect with that of norcantharidin. For this purpose, luteal cells isolated from corpora lutea of native Taiwan goats were maintained in vitro and treated for 4 and 24 h with cantharidin and norcantharidin (0.1, 1.0, and 10 μg ml(-1)) to assess their steroidogenic effects. Progesterone (P(4)) levels and steroidogenic enzyme expression were assessed by enzyme immunoassay and Western blot methods, respectively. In caprine luteal cells, cantharidin and norcantharidin repressed basal P(4) production, as well as that mediated by ovine luteinizing hormone (oLH), 8-bromo-cyclic AMP (8-Br-cAMP), 22R-hydroxycholesterol (22R-OHC) and pregnenolone (P(5)). They also inhibited the expression of steroidogenic acute regulatory (StAR) protein, cytochrome P450 cholesterol side-chain cleavage (P450scc) enzyme, and 3β-hydroxysteroid dehydrogenase (3β-HSD) enzyme. Additionally, the greater inhibitory effect was detected using cantharidin, when it is compared with that of norcantharidin. Our results suggest that ingestion of cantharidin may decrease luteal steroidogenesis, and the decline in luteal P(4) levels may disrupt reproductive functions in humans as well as animals. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/425205 http://www.scopus.com/inward/record.url?eid=2-s2.0-84857651323&partnerID=MN8TOARS |
ISSN: | 09402993 | DOI: | 10.1016/j.etp.2010.06.003 | SDG/關鍵字: | 22 hydroxycholesterol; 3(or 17)beta hydroxysteroid dehydrogenase; 8 bromo cyclic AMP; cantharidin; cholesterol monooxygenase (side chain cleaving); luteinizing hormone; norcantharidin; pregnenolone; progesterone; steroidogenic acute regulatory protein; animal cell; article; cell proliferation; cell viability; controlled study; cytotoxicity test; down regulation; enzyme immunoassay; female; goat; in vitro study; luteal cell; nonhuman; protein expression; protein synthesis inhibition; steroidogenesis; toxicokinetics; toxin analysis; toxin synthesis; Western blotting; 3-Hydroxysteroid Dehydrogenases; Animals; Bicyclo Compounds, Heterocyclic; Blotting, Western; Cantharidin; Cell Culture Techniques; Cell Line; Cholesterol Side-Chain Cleavage Enzyme; Dose-Response Relationship, Drug; Female; Goats; Luteal Cells; Phosphoproteins; Progesterone; Animalia; Capra; Capra hircus; Mylabris; Ovis |
顯示於: | 動物科學技術學系 |
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