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자료유형
학술저널
저자정보
저널정보
고려인삼학회 Journal of Ginseng Research Journal of Ginseng Research Vol.32 No.1
발행연도
2008.3
수록면
73 - 78 (6page)

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초록· 키워드

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Red ginseng acidic polysaccharide (RGAP), isolated from Korean red ginseng (Panax ginseng C.A. Meyer), has been shown to have a variety of biological functions such as immunostimulating and anti-tumor activities. In the present study, we investigated whether RGAP inhibited ligand-induced platelet aggregation. The washed platelet-rich plasma was prepared from male SD rats with successive centrifugation. The platelets (10?/ml) were preincubated with 1 mM of CaCl₂for 2 min either in the presence or in the absence of RGAP (10 ~ 50 ㎍/ml) and were stimulated with collagen (2.5 ㎍/ml) and thrombin (0.1 U/ml). RGAP dose-dependently inhibited thrombin-induced platelet aggregation with IC<SUB>50</SUB> value of 26.2±2.0 ㎍/ml. In collagen-induced platelet aggregation, RGAP inhibited the reaction with an IC<SUB>50</SUB> value of 31.5±3.0 ㎍/ml. RGAP potently suppressed the intracellular calcium ion, which was stimulated by thrombin (0.1 U/ml). Among mitogen-activated protein kinase (MAPK) subtypes, the extracellular signal-regulated kinase (ERK) 1/2 and p38 MAPK were analyzed in the present study. RGAP inhibited the phosphorylation of ERK2 and p38 MAPK, which was activated by collagen (2.5 ㎍/ml). Finally, these results suggested that besides saponin fraction, RGAP take an important role in the preventive effect of Korean red ginseng against cardiovascular disease such as thrombosis and atherosclerosis.

목차

Abstract
INTRODUCTION
MATERIALS & METHODS
RESULTS AND DISCUSSION
ACKNOWLEDGEMENTS
REFERENCES

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