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STEROIDOGENIC EFFECTS OF KOREAN RICE BRAN EXTRACT ON MOUSE NORMAL LEYDIG CELLS VIA MODULATION OF STEROIDOGENESIS-RELATED ENZYMESopen access

Authors
Chung, Hyun JooKim, Jin-WookLee, Chae-EunMyung, Soon Chul
Issue Date
Oct-2020
Publisher
CODON PUBLICATIONS
Keywords
Korean rice bran extract; Oryza sativa L.; medicinal plant; steroidogenesis; late-onset hypogonadism
Citation
JOURNAL OF MENS HEALTH, v.16, no.4, pp E45 - E53
Journal Title
JOURNAL OF MENS HEALTH
Volume
16
Number
4
Start Page
E45
End Page
E53
URI
https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/53721
DOI
10.31083/jomh.v16i4.282
ISSN
1875-6867
1875-6859
Abstract
Background and objective Many plant extracts have various effects on diseases. In particular, some medicinal plants have been shown to have steroidogenic effects in men. However, the effects of Korean rice bran extract (RBE) on steroidogenesis in men have not been reported previously. Accordingly, in this study, we investigated the effects of RBE (Oryza sativa L.) on mouse normal Leydig cells (TM3), which produce testosterone with increasing levels of key enzymes (e.g., StAR, CYP11A1, and CYP17A1) for male steroidogenesis. Material and methods Using mouse normal Leydig cells (TM3), we determined whether RBE had steroidogenic effects by evaluating changes in the levels of steroidogenesis-related enzymes, such as StAR (steroidogenic acute regulatory protein), CYP11A1, and CYP17A1, using quantitative real-time PCR, western blotting analysis, and ELISA method. Results RBE significantly enhanced mRNA and protein levels of StAR, CYP11A1, and CYP17A1, thereby enhancing synthetic testosterone levels in mouse Leydig TM3 cell supernatants. These findings indicated that RBE increased the levels of steroidogenic enzymes to modulate steroidogenesis. Conclusion RBE enhanced mRNA and protein levels of key enzymes including StAR, CYP11A1, and CYP17A1 for male steroidogenesis. These changes could induce testosterone production by TM3 cells in vitro. Thus, RBE may be used as a food additive or medicinal plant for the treatment of diseases characterized by insufficient testosterone (e.g., late-onset hypogonadism).
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