Production of freeze-dried human antihaemophilic cryoprecipitate. 1981

G Millgan, and R Graham, and S Hanratty, and W Muir, and R Mitchell

Concentration of factor VIII from fresh plasma by cryoprecipitation remains the basis for preparation of products used to treat haemophilia A. This paper describes the preparation of a factor VIII concentrate from small plasma pools in transfusion centres with drying facilities. The dried concentrate from one litre of plasma dissolves very well in 50 or 100 ml of distilled water and contains around 500 IU per bottle. The specific activity per mg protein is 0.19 IU and the fibrinogen concentration is half that in frozen cryoprecipitate. This method of drying causes no appreciable loss in the factor VIIIC activity and little denaturation as shown by the factor-VIII-related antigen/factor VIIIC ratio of 1.7.

UI MeSH Term Description Entries
D011232 Chemical Precipitation The formation of a solid in a solution as a result of a chemical reaction or the aggregation of soluble substances into complexes large enough to fall out of solution. Precipitation, Chemical
D005167 Factor VII Heat- and storage-stable plasma protein that is activated by tissue thromboplastin to form factor VIIa in the extrinsic pathway of blood coagulation. The activated form then catalyzes the activation of factor X to factor Xa. Coagulation Factor VII,Proconvertin,Stable Factor,Blood Coagulation Factor VII,Factor 7,Factor Seven,Factor VII, Coagulation
D005612 Freeze Drying Method of tissue preparation in which the tissue specimen is frozen and then dehydrated at low temperature in a high vacuum. This method is also used for dehydrating pharmaceutical and food products. Lyophilization,Drying, Freeze,Dryings, Freeze,Freeze Dryings,Lyophilizations
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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