title: Single radial immunodiffusion of serum apolipoproteins C-II, C-III and E--pretreatment of samples with surfactant.
abstract: An assay of apolipoproteins (Apo) C-II, C-III and E in human sera by single radial immunodiffusion (SRID) is described. The procedure involves pretreatment of the serum sample with surfactant to facilitate diffusion of very low density lipoproteins in agarose. This allowed measurement of apolipoproteins in lipidemic sera by SRID in agarose gel. The intraplate coefficient of variation was less than 2.5%, and the interplate coefficient of variation, less than 3.0%. Correlation with double-antibody radioimmunoassay produced the following coefficients of correlation: gamma = 0.9931 (n = 17) for Apo C-II, gamma = 0.9221 (n = 33) for Apo C-III, and gamma = 0.9340 (n = 17) for Apo E.
mesh_terms: D053304:Apolipoprotein C-II; D053305:Apolipoprotein C-III; D001056:Apolipoproteins C / Q000097:blood*; D001057:Apolipoproteins E / Q000097:blood*; D006801:Humans; D006949:Hyperlipidemias / Q000097:blood; D005779:Immunodiffusion; D008079:Lipoproteins, VLDL / Q000097:blood; D011863:Radioimmunoassay; D013501:Surface-Active Agents / Q000494:pharmacology*
chemical_list: D053304:Apolipoprotein C-II; D053305:Apolipoprotein C-III; D001056:Apolipoproteins C; D001057:Apolipoproteins E; D008079:Lipoproteins, VLDL; D013501:Surface-Active Agents