title: [A fast and simple method for obtaining specific anti-von Willebrand factor IgG].
abstract: Date expired commercial F.VIII concentrates (1.000 I.U. in 15 ml) were chromatographed through a Sepharose 4B in Tris-HCI (0.15 M, pH = 7.4) column. The void volume of this column was found to constitute an enriched vWF preparation. Half a milliliter of this preparation (protein content: 200 micrograms/ml) was mixed (1: 3) with Freund's complete adyuvant and administered to two rabbits by intramuscular route. A total of 3 doses were administered at days 1, 15 and 21 and the 2 animals were bled at day 30. The serum samples so obtained were pooled and analysed (DGD and IEP) for anti-vWF and anti-NHP activity. Strong anti-vWF specificity could be demosntrated. However, since a weak anti-fibrinogen and anti-IgG contaminant activity was also detected, the pool was filtered through a column containing normal human plasma coupled to a periodate activated Sephacryl S-1.000 immunoadsorbent. The filtrate, which was found to contain only a strong anti-vWF activity, was again processed by affinity chromatography through another Sephacryl immunoadsorbent containing a commercial F.VIII concentrate of the same lot employed for purifying the vWF. The eluate so obtained demonstrated to be constituted only by a pure rabbit IgG with strong anti-vWF specificity and was completely devoid of activity against any other human plasmastic protein. The method was found to be rapid, simple and economic, yielding as much as 5 mg of specific IgG for every 10 ml of antiserum so processed.
authors.forename: E
authors.initials: E
authors.lastname: Carmona
authors.forename: F
authors.initials: F
authors.lastname: Llopis
authors.forename: J A
authors.initials: JA
authors.lastname: Aznar
authors.forename: M J
authors.initials: MJ
authors.lastname: Villanueva
authors.forename: J I
authors.initials: JI
authors.lastname: Jorquera
authors.forename: J M
authors.initials: JM
authors.lastname: Sánchez-Cuenca
mesh_terms: D000918:Antibody Specificity; D006801:Humans; D007106:Immune Sera / Q000032:analysis* / Q000276:immunology; D007074:Immunoglobulin G / Q000276:immunology / Q000302:isolation & purification*; D007163:Immunosorbent Techniques; D014841:von Willebrand Factor / Q000276:immunology*
chemical_list: D007106:Immune Sera; D007074:Immunoglobulin G; D014841:von Willebrand Factor
vernacular_title: Un método rápido y sencillo para la obtención de IgG específica anti factor von Willebrand.