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Results for “Complement Fixation Tests”

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At least 307 records · Page 17Linked to original sources
PubMed1990

[Effect of specific treatment on the evolution of antibody titers against Chlamydia trachomatis measured by the immunofluorescence and complement fixation tests].

We have evaluated the results of a serologic study of 34 patients with a possible chlamydial infection, obtaining three successive serum samples that were assessed with microimmunofluorescence (IIF) and complement fixation (CF) tests, so as to establish a comparison between the antibody titer measured by each of them. CF detects antibodies against the genus antigen, whereas IIF detects antibodies against the type-specific antigen. The antibodies against both antigens decrease in a parallel fashion, although somewhat more slowly in those against group antigen. This difference is significant (p less than 0.05).

Adult↗
PubMed1977

False positive complement fixation tests with respiratory virus preparations in bird fanciers with allergic alveolitis.

False positive raised complement fixation titres to egg-grown virus preparations were found in six pigeon fanciers suffering from extrinsic allergic alveolitis but not in six similar budgerigar fanciers. The raised titres in the pigeon fanciers fell fourfold over a short interval in the absence of avian exposure and were attributable to antibodies directed against antigens from hen's egg in which the test virus preparations were grown. Such antigens were shown to be present in the virus preparations. In view of the clinical similarities between influenza and acute extrinsic allergic alveolitis, it is essential that a diagnosis of influenza in bird fanciers is not based on either a single raised titre or a fourfold fall in complement fixation titre without appropriate control tests with avian antigens.

Alveolitis, Extrinsic Allergic↗
PubMed1991

Chlamydia pneumoniae respiratory tract infection: the interpretation of high titres in the complement fixation test.

Sera from 5 acute respiratory disease patients from Northern Norway presenting with high chlamydia complement fixation (CF) titres, were analyzed for Chlamydia pneumoniae-specific IgG and IgM in a micro-immunofluorescence (micro-IF) test that included antigens from the prototype strain TW 183, and a Norwegian isolate, FML 10. The patients were confirmed to have had C. pneumoniae infection based on serologic findings. This establishes the clinical significance of early CF results in this geographical area. However, different micro-IF titres against the 2 C. pneumoniae isolates tested suggest antigenic variability among the species.

Adolescent↗
PubMed1975

Complement fixation test as an aid in the diagnosis of farmer's lung.

Complement-fixing antibodies to Micropolyspora faeni were measured in farmers and controls. Farmers with known or suspected farmer's lung showed significantly higher titers than control groups. Variations in titer were measured and correlated with the clinical disease.

Antibodies, Bacterial↗