PMID: 11905590Mar 22, 2002Paper

Chlamydia pneumoniae IgA- and IgG antibodies in young survivors of myocardial infarction. A comparison of antibody detection by a microimmunofluorescence test and an enzyme immunoassay

Journal of Internal Medicine
D S HalvorsenJ B Hansen

Abstract

Chronic Chlamydia pneumoniae infection is considered as a cardiovascular risk factor and antibodies are commonly analysed by the subjective microimmunofluorescence (MIF) test. We wanted to investigate the C. pneumoniae IgA- and IgG seroprevalence in young survivors of myocardial infarction and matched controls, and to compare the agreement of detecting antibodies between a MIF test and an enzyme immunoassay (EIA). A total of 61 patients hospitalized as a result of myocardial infarction, 51 patients hospitalized with chest pain and negative exercise-ECG and 61 age and sex matched controls (mean age 53.3 years, range 40-60 years) were included in this case-control study. Serological comparisons were expressed as sensitivity, specificity and interrater agreement (K or Kw) of the EIA test related to the MIF test. Presence of IgA (cut off = 16) antibodies was significantly higher in coronary heart patients compared with controls for both assays (P = 0.02 by the MIF and P = 0.05 by the EIA test). The presence of IgG (cut off = 32) antibodies was significantly higher amongst patients (P = 0.05) when analysed by the MIF-test, but not with the EIA-test (P = 0.16). The strength of agreement between the assays was good for both IgA- (Kw =...Continue Reading

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Citations

Feb 25, 2009·The Journal of Headache and Pain·QiHong LuHongYan Liu
Jun 8, 2006·Diagnostic Microbiology and Infectious Disease·Mika PaldaniusPekka Saikku
Oct 30, 2020·The Journal of International Medical Research·Jie-Ru Chen, Xiao-Fei Zhou

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