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B S Chessum

Publications and source records attributed to B S Chessum.

11 recordsLinked to original sources
PubMed1989

Direct agglutination test and other assays for measuring antibodies to Toxoplasma gondii.

The performance of a direct agglutination test for the detection of toxoplasma specific IgG immunoglobulin was compared with that of the latex agglutination test. The direct agglutination test was less sensitive but more specific than the latex agglutination test. Quantitative results were not directly comparable, reflecting the different antibody profiles detected in each assay. The direct agglutination test represents an alternative to the latex agglutination test as a screening test for toxoplasmosis. Patients at risk of life threatening infection require detailed serological examination using additional assays.

Agglutination Tests↗
PubMed1989

Five commercial enzyme linked immunosorbent assay kits for toxoplasma specific IgM antibody.

Five commercially available enzyme linked immunosorbent assay (ELISA) kits for the detection of specific IgM against Toxoplasma gondii were evaluated in a three centre study and results compared with those of the Public Health Laboratory Service ELISA for Toxoplasma IgM (PHL IgM ELISA). Fifty selected sera were tested by all the methods (Toxo-M, Captia Toxo-M EIA, Toxo Enz M EIA, Toxonostika IgM EIA, Sopazyme Toxo IgM EIA) at the three reference centres in England and Wales and 177 routine sera by all the methods in one or other of the centres. Ten of the 50 selected sera contained autoimmune antibodies but no specific IgM and 29 had toxoplasma specific IgM detectable by the PHL IgM ELISA. The kits were assessed for their specificity and sensitivity compared with the PHL IgM ELISA, and the percentage coefficient of variation for binding to the solid phases was determined. They were also rated subjectively by the staff performing the assays and an overall impression of each kit was gained by allocating scores of several criteria. There was quite close agreement among the results obtained with all five commercial assays and the PHL IgM ELISA, although some of the sera pre-selected as being potentially problematic showed the limitations of some of the assays.

Animals↗
PubMed1983

Toxoplasmosis.

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Animals↗
PubMed1978

Inconstant ELISA.

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Enzyme-Linked Immunosorbent Assay↗
PubMed1977

Observations of dye test (DT) titres to Toxoplasma in a non-breeding flock of sheep.

In this study nine sheep and one goat were tested by the Sabin Feldman dye test for the presence of antibodies to Toxoplasma spp over a period of 12 months. No significant signs of a seasonal variation in dye test titres of infected animals could be demonstrated. The possible source of infection of two sheep, exhibiting a sudden rise in antibody titre during the course of the observations is discussed.

Animals↗