[The isolation and immunochemical study of Leishmania antigens].
The authors describe a procedure for producing the antigen by using a promastigotic suspension of the high-virulent inoculative strain Leishmania major. A Leishmania culture medium was improved to enhance the yield of parasites up to 1-3 billion cells in a flask. The grown culture was washed off with isotonic sodium chloride solution, from the medium residues and concentrated up to 1 billion cells per ml of the cvolume. The cell concentrate contained no rabbit blood additive, as evidenced by the gel double diffusion test. The combinations of destruction via multiple freezing-unfreezing or lyophilization, followed by ultrasound treatment were found to be the best modes of promastigotic disintegration. The antigenic suspension generally displayed 3-5 precipitation lines with hyperimmune rabbit sera and 1-3 precipitation lines with sera from the infected animals. The number of precipitation lines is higher in the suspension from the high-virulent Leishmania strains. Fractions of protective antigens have not been detected so far.
Tursunov
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SS
Shchetkin
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VIu
D000818:Animals; D000953:Antigens, Protozoan / Q000737:chemistry / Q000276:immunology / Q000302:isolation & purification*; D006801:Humans; D007114:Immunization; D007120:Immunochemistry; D007158:Immunologic Techniques; D018320:Leishmania major / Q000254:growth & development / Q000276:immunology* / Q000302:isolation & purification / Q000472:pathogenicity; D016773:Leishmaniasis, Cutaneous / Q000276:immunology / Q000469:parasitology; D051379:Mice; D011817:Rabbits; D014774:Virulence / Q000276:immunology
D000953:Antigens, Protozoan
Poluchenie i immunokhimicheskoe issledovanie antigenov leĭshmaniĭ.