Comparison of the effect of a conventional heparin and a low molecular weight heparinoid on platelet function.

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Abstract
In a study comparing the in vitro effects of heparin and a low molecular weight heparinoid (Organon 10172) on aggregation of platelets from normal subjects, we have demonstrated that whereas heparin markedly enhances platelet aggregation induced by other aggregators and inhibits the anti‐aggregatory effect of epoprostenol (prostacyclin, PGI2), heparinoid does not produce such effects. The use of heparinoid may thus have a significant advantage over that of heparin in situations where enhanced platelet aggregation is the main factor leading to thrombosis or where heparin treatment is followed by thrombocytopaenia.