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  • Title: Monoclonal antibodies to quinine.
    Author: Kitjaroentham A, Khusmith S, Laothavorn J, Na-Bangchang K, Thammapalerd N.
    Journal: Southeast Asian J Trop Med Public Health; 1998 Jun; 29(2):337-40. PubMed ID: 9886124.
    Abstract:
    Monoclonal antibodies (MAbs) to quinine conjugated to a carrier protein were produced. Quinine was converted into a hemisuccinate prior to covalently linked to bovine serum albumin (BSA) by reacting with N,N'-disuccinimidyl carbonate (DSC). Coupling ratio of quinine-BSA was 13:1 calculated by spectrophotometry and 14:1 by calculation from quinine standard curve. This immunogen was used for both monoclonal antibody production and for screening test, indirect ELISA. The specificity of quinine-BSA MAbs was examined by checking the cross reactivity with BSA and the structurally related antimalarial drug, mefloquine. Six MAbs belonging to IgG1 were obtained. These MAbs slightly reacted with mefloquine-BSA because of closely related structure of mefloquine to quinine and similar conjugate preparation procedure used for conjugation. One selected MAb against quinine-BSA, showed higher reactivity with blood samples from patients previously treated with quinine when compared to normal blood. This preliminary test indicated that MAbs obtained may be useful to be used as the probe for detection of quinine in biological fluids.
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