Enzyme-linked immunosorbent assay for human plasma apolipoprotein B

Autor: J M Ordovas, J P Peterson, P Santaniello, J S Cohn, P W Wilson, E J Schaefer
Jazyk: angličtina
Rok vydání: 1987
Předmět:
Zdroj: Journal of Lipid Research, Vol 28, Iss 10, Pp 1216-1224 (1987)
Druh dokumentu: article
ISSN: 0022-2275
DOI: 10.1016/S0022-2275(20)38611-9
Popis: A noncompetitive enzyme-linked immunosorbent assay (ELISA) has been developed for measuring total plasma apolipoprotein (apo) B using affinity purified polyclonal and monoclonal antibodies. Microtiter plates from different manufacturers were tested with regard to their IgG binding characteristics; only one plate yielded consistent coefficients of variation of less than 5%. The optimal plasma dilution in this assay was 1:3000. IgG anti-apoB antisera conjugated to alkaline phosphatase was used as a second antibody. p-Nitrophenyl phosphate was utilized as substrate for color development, and the absorbance (410 nm) was read utilizing an ELISA reader interfaced with a microcomputer for data processing. Plasma apoB levels in plasma have been determined in 1115 male and female participants in the Framingham Offspring Study. Mean (+/- SD) plasma concentrations were 89 +/- 28 mg/dl. Significant age and sex related differences in apoB levels were noted.
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