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Antibody response of HIV-infected patients to latent, cerebral and recently acquired toxoplasmosis.

AbstractThe aim of this longitudinal study with 626 HIV-infected patients was to evaluate the capability of serological tests in diagnosing the presence of Toxoplasma gondii infection in HIV-infected patients, as well as the potential impact of various treatment regimes on serological results. Low IgG antibody levels and stable or declining titres predominated. IgM positivity occurred in ten patients (one seroconversion, seven latent, two cerebral toxoplasmosis). Complement fixation test (CFT) titres >or=1:32 imply that the relative risk of cerebral toxoplasmosis is 6.84 (95% confidence interval [CI] 1.44-32.5) but with a predictive value of only 14.0% (95% CI 5.3-27.9). Values of specific antibodies are not biassed by antiretroviral treatment and/or prophylaxis for toxoplasmosis, and the detection of specific antibodies is very useful in the identification of T. gondii infection in the HIV-infected population, but the role of serology in predicting the clinical manifestation of T. gondii infection is limited.
AuthorsL Machala, M Malý, S Hrdá, H Rozsypal, M Stanková, P Kodym (Affiliation: University Hospital Bulovka, AIDS Center, Budínova 2, Prague 8, 180 81, Czech Republic.)
JournalEuropean journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology (Eur J Clin Microbiol Infect Dis) Vol. 28 Issue 2 Pg. 179-82 (Feb 2009) ISSN: 1435-4373 [Electronic] Germany
PMID18688665 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
Chemical References
  • Anti-Retroviral Agents
  • Antibodies, Protozoan
  • Immunoglobulin G
  • Immunoglobulin M
Topics
  • Adolescent
  • Adult
  • Aged
  • Animals
  • Anti-Retroviral Agents (therapeutic use)
  • Antibodies, Protozoan (blood)
  • Child
  • Child, Preschool
  • Complement Fixation Tests
  • Enzyme-Linked Immunosorbent Assay
  • Female
  • HIV Infections (complications, drug therapy)
  • Humans
  • Immunoglobulin G (blood)
  • Immunoglobulin M (blood)
  • Longitudinal Studies
  • Male
  • Middle Aged
  • Predictive Value of Tests
  • Toxoplasma (isolation & purification)
  • Toxoplasmosis (complications, diagnosis, epidemiology, immunology)
  • Toxoplasmosis, Cerebral (complications, diagnosis, epidemiology, immunology)

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