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http://dx.doi.org/10.15188/kjopp.2015.10.29.5.403

Effects of Extracts from Oja on Testosterone Synthesis in Leydig Cells  

Kim, Gye Yeop (Department of Physical Therapy, Collage of Health & Welfare, Dongshin University)
Lee, Hong Gun (Department of Physical Therapy, Collage of Health & Welfare, Dongshin University)
Kim, Eun Jeong (Department of Physical Therapy, Collage of Health & Welfare, Dongshin University)
Publication Information
Journal of Physiology & Pathology in Korean Medicine / v.29, no.5, 2015 , pp. 403-408 More about this Journal
Abstract
Traditionally, 5 kinds of fruits with "ja(子)" in their name, including Rubus coreanus, Schisandra chinensis, Lycinum chineuse, Torilidis fructus, and Cuscuta seed, collectively called Oja(五子), are long known to enhance stamina. In the present study, we replaced tosaja with gyeolmyeongja(Cassiae semen ) and examined the effects of extracts from these fruits on andropause. This study investigated the antioxidant effect and testosterone synthesis of Oja water extract on Leydig TM3 cells. To investigate whether hydrogen peroxide induces oxidative stress in Leydig cells, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide(MTT) assay, nitric oxide assay, and testosterone assay were performed on mouse Leydig TM3 cells. The results were obtained as follows: Leydig TM3 cells viability was assessed by a modified MTT assay, and the protection effect of Oja water extract against hydrogen peroxide-induced cell oxidative stress were examined by mitochondrial activity. Oja water extract could efficiently protect cytotoxicity induced by H2O2. Oja water extract promoted testosterone synthesis. These results suggest that Oja water extract has protective roles and promotes steroidogenesis in Leydig cells through its anti-oxidant action.
Keywords
Oja extract; Leydig cell; Testosterone; NO;
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