title: [Standardization of the complement fixation test (CFT) in brucellosis. I. The Polish standard of anti-Brucella abortus serum].
abstract: The purpose of this paper was to prepare an indigenous standard of anti-Brucella abortus serum for the complement fixation test (CFT) as a homologue of the secon International Standard of anti-Brucella abortus Serum (ISABS-II), which contains 1000 international units of complement-fixing antibodies in 1 cm3. The indigenous Standard of anti-Brucella Abortus Serum (ISABAS) was prepared in 1975. The material used was the serum of a cow infected with Br.abortus, biotype 1, under natural conditions. The cow was beheaded on the 54th day after abortion. The serum obtained was filtered through a Seitz EK filter and appropriately diluted with normal bovine serum. The preparation was lyophilized in 8500 ampules, each of which contained 1 cm3 of serum. They were filled with nitrogen before closing them. It was shown that ISABAS activity in CFT was approximate to that of ISABS-II. The studies in CVL, Weybridge showed that one ampule contained 1115 international units of complement-fixing antibodies. ISABAS titres in the agglutination test (AT) and antiglobulin test (AGT) were 320+ + and 2560+ + + respectively. Reduction with 2-mercaptoethanol and separation on a column with Sephadex G-200 gel showed that anti-Brucella antibodies occurred in ISABAS mainly in IgG class. ISABAS lyophilizate is characterized by stability of CFT titre, good solubility and a low anticomplementary activity. The average weight of the lyophilizate in an ampule is 79.57 mg, standard deviation - 0.36%. ISABS may serve as the basis of antigen standardization and other elements of indigenous CFT technique in brucellosis.
mesh_terms: D000818:Animals; D002003:Brucella abortus / Q000276:immunology*; D002007:Brucellosis, Bovine / Q000175:diagnosis*; D002417:Cattle; D003168:Complement Fixation Tests / Q000662:veterinary*; D005260:Female; D007106:Immune Sera / Q000592:standards*; D011044:Poland
chemical_list: D007106:Immune Sera
vernacular_title: Standaryzacja odczynu wiazania dopełniacza (OWD) przy brucelozie. I. Krajowy standard surowicy anty-Brucella abortus.