| Autor: |
Oh, Su, Lee, Ji-hye, Lee, Ji, Seo, Sanghee, Ma, Jinyeul |
| Předmět: |
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| Zdroj: |
Biotechnology & Bioprocess Engineering; Feb2012, Vol. 17 Issue 1, p168-175, 8p |
| Abstrakt: |
Hepatocytes exposed to an oxidative stressor such as hydrogen peroxide (HO) are potentially sensitized to cell death; thus, reactive oxygen species (ROS) are considered to be critical mediators of liver damage. Zingiber officinale Roscoe (ZO), also known as ginger, is cultivated commercially in China, India, Korea, and other parts of the world. In addition, it is used as a spice and flavoring agent and is also purported to possess a number of medicinal properties. In the present study, we examined the protective effect of ZO against cell damage caused by HO-induced oxidative stress. ZO reduced HO-induced apoptotic signals and the levels of intracellular ROS. ZO pretreatment also increased the phosphorylation of c-Jun, and JNK kinase. The expression of heme oxygenase-1 (HO-1) and heat shock protein 72 (HSP72) were increased by ZO pretreatment more than HO treatment. In addition, siRNA-mediated knockdown of HO-1 and HSP72 decreased protective effect of ZO pretreatment. Our data suggest that ZO decreases ROS levels and the expressions of HO-1 and HSP72 are involved in the hepatocyte protective function of ZO against HO. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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