[Determination of phenobarbital by polarized fluoroimmunoanalysis. The effect of immunogen structure and tracer on specificity and detection limit].
The influence of the immunogen's tracer's structure on properties of antibodies to phenobarbital was studied by the polarisation fluoroimmunoassay method. It was shown that in homogeneous method of polarisation fluoroimmunoassay the titer of antibodies to phenobarbital (1/1000-1/10,000) is affected by the position of linker binding the antigen with carrier-protein and by the structure of the linker. The affinity constant ((1-4) x 10(9) M-1), cross-reactivity, limit of the detection (0.6-2.6 micrograms/ml) phenobarbital with different combinations of antibodies and tracers were calculated. The antisera grew the more heterogeneous in affinity and specificity, the longer became the linker. The more heterogeneous antibodies are preferable in the class specific assay of barbiturates.
A B
AB
Dzgoev
S A
SA
Eremin
M V
MV
Karpov
N P
NP
Danilova
R G
RG
Vasilov
A M
AM
Egorov
D000818:Animals; D000915:Antibody Affinity; D003429:Cross Reactions; D005454:Fluorescence Polarization; D007118:Immunoassay; D051379:Mice; D008807:Mice, Inbred BALB C; D010634:Phenobarbital / Q000032:analysis* / Q000276:immunology; D014614:Vaccines, Synthetic / Q000737:chemistry* / Q000276:immunology
D014614:Vaccines, Synthetic; D010634:Phenobarbital