Anticoagulant property of a semi-synthesized sodium beta-1,4-glucan sulfate / 药学学报

ABSTRACT

<p><b>AIM</b>To investigate the anticoagulant efficacy and mechanism of a semi-synthesized sodium beta-1,4-glucan sulfate (Na-MCS).</p><p><b>METHODS</b>Anticoagulant activity was evaluated by means of coagulation assays in comparison with heparin. The anticoagulant mechanism of Na-MCS was disclosed by inhibitory analysis of the activities of coagulation factors using chromogenic substrates.</p><p><b>RESULTS</b>0.6 microg x mL(-1) Na-MCS could significantly prolong APTT and TT, but has less effect on PT at an even higher concentration. The dosage of Na-MCS required to double APTT of normal human plasma was 0.7 microg x mL(-1), lower than that of heparin with the activity of 150 u x mg(-1).</p><p><b>CONCLUSION</b>Na-MCS represented a potent anticoagulation activity in vitro, which matched the efficacy of heparin in a certain range of concentrations. Na-MCS exhibited anticoagulant activity due to inhibition of the coagulation factors IIa and Xa by the mediation of anti-thrombin AT-III.</p>