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Abstract Title:

[6]-shogaol attenuates neuronal apoptosis in hydrogen peroxide-treated astrocytes through the up-regulation of neurotrophic factors.

Abstract Source:

Phytother Res. 2013 Dec ;27(12):1795-9. Epub 2013 Feb 11. PMID: 23401228

Abstract Author(s):

Sokho Kim, Jungkee Kwon

Article Affiliation:

Sokho Kim

Abstract:

Neuronal apoptosis induced by oxidative stress is a prominent feature of neurodegenerative disorders. [6]-shogaol, a bio-active compound in ginger, possesses potent anti-inflammatory actions and has recently emerged as a potential therapeutic agent for neurodegenerative disorders. However, the effects of [6]-shogaol on astroglial apoptosis following exogenously induced oxidative stress has not yet been investigated. Here, we show that the anti-apoptotic activity of [6]-shogaol in astrocytes following exposure to hydrogen peroxide (H2 O2 ) involves a marked up-regulation of neurotrophic factors such as nerve growth factor, glial cell line-derived neurotrophic factor, and brain-derived neurotrophic factor. Astrocytes co-treated with [6]-shogaol and H2 O2 for 1 h showed decrease in reactive oxygen species production compared with those only treated with H2 O2 . Moreover, [6]-shogaol counteracted the reduced expression of ERK1/2 in H2 O2 -treated astrocytes and protected these cells from oxidative stress and apoptosis by attenuating the impairment of mitochondrial function proteins such as Bcl-2 and Bcl-xL. Additionally, [6]-shogaol inhibits the expression of the apoptotic proteins Bax and caspase-3 in H2 O2 -treated astrocytes. This data suggest that following oxidative stress, [6]-shogaol protects astrocytes from oxidative damage through the up-regulating levels of neurotrophic factors. These findings provide further support for the use of [6]-shogaol as a therapeutic agent in neurodegenerative disorders.

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Sayer Ji
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