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KMID : 0363620100310020001
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Journal of Korean Oriental Medicine
2010 Volume.31 No. 2 p.1 ~ p.18
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The Protective Effects of Chilgi-tang on Oxidative Stress by Glucose Deprivation in Neuro 2A Cells
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Seong Ki-Ho
Lee Jung-Sup
Shin Sun-Ho
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Abstract
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Objective: The water extract of Chilgi-tang (CGT) has been traditionally used in treatment of heart diseases caused by stress in Oriental Medicine. However, little is known about the mechanism by which CGT rescues neuronal cells from injury damage. Therefore, this study was designed to evaluate the protective effects of CGT on Neuro-2A cells by glucose deprivation-induced cell death.
Methods: We investigated how cell death induced by glucose deprivation was associated with increased reactive oxygen species (ROS) generation.
Result: The CGT treatment prior to glucose deprivation insult significantly reduced the number of cell deaths and the glucose deprivation-induced increase in ROS. Nitric oxide (NO) was also attenuated by CGT treatment. In addition, we demonstrated that the anti-cell death effect of CGT was blocked by heme oxygenase-1 (HO-1) activation. Finally, pretreatment of cells with a hemin, HO-1 inducer, reduced glucose deprivation-induced cell death. In contrast, pretreatment of cells with a ZnPP, HO-1 activity inhibitor, attenuated CGT-induced inhibition of cell death.
Conclusions: These findings indicate that ROS plays an important role in glucose deprivation-induced cell death and that CGT may prevent glucose deprivation-induced cell death by inhibiting the ROS generation through HO-1 activation in Neuro-2A cells.
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KEYWORD
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Chilgi-tang, Neuro-2A cells, glucose deprivation, oxidative stress
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