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논문 기본 정보

자료유형
학술저널
저자정보
저널정보
대한한방내과학회 대한한방내과학회지 대한한방내과학회지 제27권 제3호
발행연도
2006.1
수록면
603 - 616 (14page)

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From the water extract of the Gamiyaengshinhwan (GYH), has been used in vitro test for its beneficial effects on neuronal survival and neuroprotective functions, particularly in connection with CT105-related dementias and Alzheimer's disease(AD). CT105 derived from proteolytic processing of the -amyloid precursor protein (APP), including the amyloid- peptide (A), play a critical role in the pathogenesis of Alzheimer's dementia. We determined that transfected overexpressing APP695 and A CT105 have a profound attenuation in the increase in CT105 expressing neuro2A cells from GYH.Experimental evidence indicates that GYH protects against neuronal damage from cells, but its cellular and molecular mechanisms remain unknown. Using a neuroblastoma cell line stably expressing an CT105-associated neuronal degeneration, we demonstrated that GYH inhibits formation of amyloid- fragment (A CT105), which are the behavior, and possibly causative, feature of AD. The decreased CT105 A in the presence of GYH was observed in the conditioned medium of this CT105-secreting cell line under in vitro. In the cells, GYH significantly attenuated mitochondrion-initiated apoptosis and decreased the activity of Bax, a key enzyme in the apoptosis cell-signaling cascade. These results suggest that neuronal damage in AD might bedue to two factors: a direct CT05 toxicity and the apoptosis initiatedby the mitochondria; multiple cellular and molecular neuroprotective mechanisms, including attenuation of apoptosis and direct inhibition of CT105 aggregation, underlie the neuroprotective effects of GYH.

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