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Analysis of the Action of Quaternized Chitosans with Different Molecular Weight on Anticoagulant Activity of Heparins In Vitro
Ist Teil von
Bulletin of experimental biology and medicine, 2019-06, Vol.167 (2), p.279-283
Ort / Verlag
New York: Springer US
Erscheinungsjahr
2019
Quelle
SpringerLink
Beschreibungen/Notizen
Quaternized derivatives of chitosan with a substitution degree of 85-98% (highly substituted) synthesized from chitosans with a molecular weight of 5, 10, 20 kDa, with a degree of deacetylation of 89-98%, and the code numbers of QChit 5, QChit 10, QChit 20, respectively, completely neutralize antithrombin activity of unfractionated heparin and partially neutralize aXa activity of low-molecular-weight heparin (clexane), similar to protamine sulfate. The advantages of QChit 5 and QChit 10 over QChit 20 and protamine sulphate are the follows: the effect is achieved at lower concentrations and in greater concentration range; they do not promote platelet aggregation; in a concentration of 0.0072 mg/ml they do not destroy the erythrocyte membranes.