해마 세포주에서 인삼의 고포도당에 의한 세포사멸 차단효과
Ginsenosides Prevent High Glucose-induced Apoptosis in HT22 Cells
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초록
Diabetic neuropathy is characterized by the decrease of cell viability in neuron, which is induced by the hyperglycemia. HT22 cell is the neuron cell line originated from hippocampus. Ginsenosides have been reported to retain anti-diabetic effect. However, the preventive effect of ginsenosides in the condition of diabetic neuropathy was not elucidated. Thus, this study was conducted to examine the protective effect of ginsenoside total saponin (GTS), panoxadiol (PD), and panoxatriol (PT) in the high glucose-induced cell death of HT22 cells, an in vitro cellular model for diabetic neuropathy. In present study, high glucose increased lactate dehydrogenase(LDH) activity, the lipid peroxide(LPO) formation and induced the decrease of cell viability. These effects were completely prevented by the treatment of GTS, but partially prevented by the treatment of PD and PT. High glucose also increased the expression of Bax and cleaved form of caspase-3 but decreased that of Bcl-2. These effects of high glucose on Bax, Bcl-2 and cleaved form of caspase-3 were completely prevented by the treatment of GTS, but partially prevented by the treatment of PD and PT in HT22 cells. In conclusion, ginsenosides prevented high glucose-induced cell death of hippocampal neuron through the inhibition of oxidative stress and apoptosis in HT 22 cells.
Abstract
Diabetic neuropathy is characterized by the decrease of cell viability in neuron, which is induced by the hyperglycemia. HT22 cell is the neuron cell line originated from hippocampus. Ginsenosides have been reported to retain anti-diabetic effect. However, the preventive effect of ginsenosides in the condition of diabetic neuropathy was not elucidated. Thus, this study was conducted to examine the protective effect of ginsenoside total saponin (GTS), panoxadiol (PD), and panoxatriol (PT) in the high glucose-induced cell death of HT22 cells, an in vitro cellular model for diabetic neuropathy. In present study, high glucose increased lactate dehydrogenase(LDH) activity, the lipid peroxide(LPO) formation and induced the decrease of cell viability. These effects were completely prevented by the treatment of GTS, but partially prevented by the treatment of PD and PT. High glucose also increased the expression of Bax and cleaved form of caspase-3 but decreased that of Bcl-2. These effects of high glucose on Bax, Bcl-2 and cleaved form of caspase-3 were completely prevented by the treatment of GTS, but partially prevented by the treatment of PD and PT in HT22 cells. In conclusion, ginsenosides prevented high glucose-induced cell death of hippocampal neuron through the inhibition of oxidative stress and apoptosis in HT 22 cells.
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