کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6285502 | 1296835 | 2009 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Curcumin attenuates ethanol-induced toxicity in HT22 hippocampal cells by activating mitogen-activated protein kinase phosphatase-1
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب (عمومی)
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چکیده انگلیسی
Ethanol causes neurotoxicity through formation of reactive oxygen species and activation of mitogen-activated protein kinase (MAPK) pathways. MAPK phosphatase-1 (MKP-1) is one of the phosphatases responsible for dephosphorylation/deactivation of MAPKs. In this report, we examined the potential involvement of MKP-1 in cytoprotective effects of the well-known antioxidant curcumin. In HT22 hippocampal cells, ethanol caused cell death and activation of p38 MAPK and other two kinases. Blockage of p38 MAPK by its inhibitor protected HT22 cells against ethanol-induced toxicity. Curcumin attenuated ethanol-induced cell death, inhibited activation of p38 MAPK, and activated MKP-1. In HT22 cells transiently transfected with small interfering RNA against MKP-1, curcumin failed to inhibit ethanol-induced activation of p38 MAPK and to protect HT22 cells from ethanol-induced toxicity. Our results suggest that curcumin can attenuate ethanol-induced neurotoxicity by activating MKP-1 which acts as the negative regulator of p38 MAPK. This novel pathway may contribute to and explain at least one of the cytoprotective actions of curcumin.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuroscience Letters - Volume 453, Issue 3, 10 April 2009, Pages 186-189
Journal: Neuroscience Letters - Volume 453, Issue 3, 10 April 2009, Pages 186-189
نویسندگان
Hyun-Ock Pae, Sun-Oh Jeong, Min Zheng, Hun-Yong Ha, Kang-Min Lee, Eun-Cheol Kim, Dong-Hwan Kim, Sung-Yeon Hwang, Hun-Taeg Chung,