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Effect of non-saponin fraction from Panax ginseng on cGMP and thromboxane A2 in human platelet aggregation


, : Effect of non-saponin fraction from Panax ginseng on cGMP and thromboxane A2 in human platelet aggregation. Journal of ethnopharmacology, 49(3): 157-162

The non-saponin fraction (NSF; lipophilic fraction) from the roots of Panax ginseng inhibited the aggregation of human platelets induced by thrombin (0.1 units/ml) in a dose-dependent manner. NSF induced the elevation of cGMP concentration in human platelets in a similar manner to molsidomine, a known vasodilator. NSF also inhibited Ca2+- influx into platelets. While verapamil, a Ca2+-antagonist, increased the cAMP level in platelets stimulated by thrombin, NSF had little effect on cAMP formation. Instead, NSF potently inhibited the thromboxane A2 (TXA2) production. The results suggest that NSF may regulate the levels of cGMP and TXA2 to inhibit platelet aggregation induced by thrombin.

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Accession: 002815452

DOI: 10.1016/0378-8741(95)01317-2

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