کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
20496 43177 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Purification of kavalactones from Alpinia zerumbet and their protective actions against hydrogen peroxide-induced cytotoxicity in PC12 cells
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی بیو مهندسی (مهندسی زیستی)
پیش نمایش صفحه اول مقاله
Purification of kavalactones from Alpinia zerumbet and their protective actions against hydrogen peroxide-induced cytotoxicity in PC12 cells
چکیده انگلیسی

This study found that fruit shells of shell ginger (Alpinia zerumbet) are a rich source of the kavalactones dihydro-5,6-dehydrokavain (DDK) and 5,6-dehydrokavain (DK). The fruit shell extraction with hexane resulted in good purity and higher yields of DDK and DK than did chloroform, ethanol, 10% ethanol, methanol or water. Additionally, this study examined the neuroprotective effects of DDK and DK against H2O2-induced cytotoxicity in PC12 cells and the possible molecular mechanisms involved. 16 h after stimulation with 400 μM H2O2, the viability (MTT reduction) of PC12 cells decreased while membrane damage (LDH release) was noticeably increased. However, pretreatment for 6 h with DDK and DK (1 μM, 5 μM, 10 μM and 50 μM) rescued PC12 cells from H2O2-induced cytotoxicity, as evidenced by decreased LDH release and increased cell viability. DDK and DK inhibit the MAPK family member p38, activate AKT, and reduce caspase-3 activity. DDK also reduced the oxidative status in H2O2-treated PC12 cells. Together, our data indicate that the A. zerumbet constituents, DDK and DK, exert a protective effect against oxidative stress-induced PC12 cell death and that the regulation of p-Akt and the p38 MAPK, and of oxidative states may be involved.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Bioscience and Bioengineering - Volume 118, Issue 6, December 2014, Pages 679–688
نویسندگان
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