The indirect fluorescent-antibody (IFA) method for diagnosis of toxoplasmosis is widely used and is considered to be as specific as the Sabin-Feldman dye test. After observing a patient with systemic lupus erythematosus (SLE) who had a positive toxoplasma IFA test but a negative dye test, we studied sera with high titers of antinuclear antibodies from 16 SLE patients and from 2 with rheumatoid ...

Reactive oxygen metabolites produced during phagocytosis are important for the microbicidal activity of granulocytes and probably of monocytes as well (1, 2). Although the role of reactive oxygen metabolites in the microbicidal activity of macrophages is not established, recent studies (3-6) suggest that they may be important because activated macrophages that exhibit enhanced antimicrobial act...

Human platelets, in the absence of antibody, are cytotoxic to tachyzoites of Toxoplasma gondii as determined by vital staining, transmission electron microscopy, and the failure of Toxoplasma to survive and replicate in mice after in vitro interaction of the organisms with platelets . Platelet to T. gondii ratios as low as 1 :3 were toxic to the organisms with direct cell-cell contact essential...

OBJECTIVES To evaluate the seroprevalence of Toxoplasma gondii among Saudi pregnant women in Najran City, as well as to measure the performance of the diagnostic tests used. METHODS A total of 96 women attending prenatal special clinics (Oteafyn special clinic) in Najran Province, Saudi Arabia, over a one year period, from September 2012 to September 2013 were screened for the presence of Tox...

BACKGROUND Toxoplasma gondii infection is embryotoxic in humans. It is mainly transmitted through raw/undercooked meat and ingestion of oocysts in cat feces. There remains controversy about the actual risk of cats transmitting the disease to humans. Our primary objective was to determine the seroprevalence of T. gondii antibody among veterinary staff, to ascertain whether they have an increased...

Human platelets, in the absence of antibody, are cytotoxic to tachyzoites of Toxoplasma gondii as determined by vital staining, transmission electron microscopy, and the failure of Toxoplasma to survive and replicate in mice after in vitro interaction of the organisms with platelets. Platelet to T. gondii ratios as low as 1:3 were toxic to the organisms with direct cell-cell contact essential f...

BACKGROUND Toxoplasmosis in immunocompetent people is generally asymptomatic but in immunocompromised patients including HIV/AIDS, cancer patients, and organ transplant recipients, etc. it can lead to serious pathological problems. The objective of current study was to determine the seroprevalence of T. gondii IgG and IgM antibodies in HIV/AIDS patients using ELISA technique in Mazandaran Provi...

background: toxoplasma gondii , the obligate intracellular parasite is life threatening in aids patients. diagnosis of toxoplasmosis is based on serological methods especially increasing of igm and igg titers, but finding of parasite or its components (antigenemia) may be beneficial method in order to detection of acute toxoplasmosis in immunocompromised patients. methods: ninety-four serum sam...

AIMS To compare the sensitivity and user friendliness of seven commercially available enzyme linked immunoabsorbent assay (ELISA) kits for toxoplasma specific IgM. METHODS Five antibody capture assays supplied by Abbott, Mercia, Northumbria, Organon and Sorin, and two indirect ELISA assays from Biostat and Mast, were assessed. Using defined dilutions of Toxoplasma gondii specific IgM, the per...

We cloned a gene, PRPI, of Toxoplasma gondii encoding a 637-amino-acids protein having a calculated mass of 70 kDa. The sequence showed high homology to parafusin, a protein that in Paramecium tetraurelia participates in Ca2+-regulated exocytosis and is a paralog of phosphoglucomutase. We show that Toxoplasma gondii homogenate and an expressed recombinant PRP1 fusion protein cross-react with a ...