Studies on the anticoagulant action of Aspilia africana.

Abstract:

:An anticoagulant activity was identified and isolated from the leaves of a West African plant, Aspilia africana by gel filtration on Sephadex G-100. The anticoagulant factor had an apparent molecular weight of approximately 60,000 d. Upon incubation with plasma, it prolonged the partial thromboplastin time, prothrombin time, thrombin and reptilase time. The factor decreased the fibrinogen content of plasma as well as the activity of coagulation factors V, VIII and IX but not factor VII, X or XI activities. After incubation with fibrinogen, the thrombin clotting time was prolonged and the quantity of clottable fibrinogen reduced. The action on fibrinogen was characterized by sequential lytic breakdown of the A-alpha-chain and B-beta-chain, the gamma-chain being lysed last, after prolonged incubation. Benzamidine, Epsilon aminocaproic acid or soybean trypsin inhibitor did not impede lysis.

journal_name

Thromb Res

journal_title

Thrombosis research

authors

Hanna MM,Niemetz J

doi

10.1016/0049-3848(87)90455-5

subject

Has Abstract

pub_date

1987-08-15 00:00:00

pages

401-7

issue

4

eissn

0049-3848

issn

1879-2472

journal_volume

47

pub_type

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