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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Development of a radioimmunoassay for SR 31747A, a new sigma ligand, in human plasma.

A specific and sensitive radioimmunoassay was developed for SR 31747A, a new sigma ligand, using a monoclonal antibody. This antibody was produced from spleen lymphocytes of a mouse immunized with SR 31747A coupled to bovine serum albumin via a peptide bond using SR 120684A, a succinamic acid derivative of SR 31747A. Negligible binding occurred when metabolites, obtained by chemical synthesis or by "in-vitro" incubation with hepatic microsomal fraction, were tested for cross-reactivity. A quantitative recovery in serum of the exogenous analyte was obtained for all the concentrations tested and the quantification limit was found to be 0.25 ng ml-1 of SR 31747 (the non-salified derivative). Intra- and inter-assay relative standard deviations ranged from 6.3-10.9 and from 5.3% to 15.4% respectively. Furthermore, comparison of results from samples which were assayed by radioimmunoassay and gas chromatography demonstrated an excellent correlation (r = 0.984).[1]


  1. Development of a radioimmunoassay for SR 31747A, a new sigma ligand, in human plasma. Dussossoy, D., Belugou, S., Pastor, G., Combalbert, J., Casellas, P. Journal of pharmaceutical and biomedical analysis. (1996) [Pubmed]
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