We report the detection of specific IgA antibodies and the determination of IgG avidity in sequential serum samples from a patient exhibiting significant levels of Toxoplasma-specific IgM antibodies for seven years after the onset of the clinical symptoms of toxoplasmosis. IgM antibodies were detected by an indirect immunofluorescence test and by three commercial enzyme-linked immunosorbent ass...

Objectives: Progressive multifocal leukoencephalopathy (PML) is caused by a reactivated infection with the human polyomavirus JC (JCV). Primary infection with JCV has not been linked to any disease in humans. Using recombinant viral protein 1 (VP1) of JCV as antigen, we developed an enzyme linked immunosorbent assay (ELISA) for the detection of VP1-speciŽc IgM. Methods: Two different direct ELI...

West Nile virus (WNV) mainly infects birds, horses and humans. Outcomes of the infection range from mild uncharacteristic signs to fatal neurologic disease. The main objectives of the present study were to measure serum IgG and IgM antibodies in naturally exposed and vaccinated horses and to compare results of haemagglutination inhibition test (HIT), enzyme-linked immunosorbent assay (ELISA) an...

Background: Cystic echinococcosis (CE), also known as echinococcosis/hydatidosis, is one of the most important parasitic diseases in the world. It enhances both humoral and cellular (Th1 and Th2) responses in infected host. Different antigens of the worm may favor the Th1 or Th2 immune responses in CE patients. Objective: To evaluate the humoral and cellular immune responses of Balb/c mice agai...

results a total of 205 blood samples obtained from diabetic patients (42 men and 163 women with age range 13 - 60 years) were examined for the presence of toxoplasma antibodies. among patients, 60 cases (29.3%) were seronegative and 145 patients (70.7%) were seropositive, included 53.145 (36.6%) (igg+, igm+) acute phase, 72.145 (49.6%) (igg+, igm-) chronic phase and 20.145 (13.8%) (igg-, igm+) ...

background: the affinity of an antibody to its antigen is a crucial parameter in its biological activity and performance of an immunoassay such as elisa. affinity of most igg specific mabs are often determined by methods which require labeling of either antigen or antibody, and are sometimes difficult to control, do not always lead to the expected signal and often result in immunological modifi...

background toxoplasma gondii has worldwide distribution and is one of the most prevalent infectious agents in humans. objectives the aim of this study was to determine the prevalence of anti-toxoplasma gondii antibodies in hemodialysis patients with chronic kidney disease (ckd) in the hemodialysis unit of fatemeh zahra hospital at the mazandaran university of medical sciences in sari, iran. met...

The unprecedented spread of highly pathogenic avian influenza virus subtype H5N1 in Asia and Europe is threatening animals and public health systems. Effective diagnosis and control management are needed to control the disease. To this end, we developed a panel of monoclonal antibodies (MAbs) against the H5N1 avian influenza virus (AIV) and implemented an antigen-capture enzyme-linked immunosor...

A monkeypox outbreak occurred in the United States in 2003. Patient's sera were sent to the Centers for Disease Control and Prevention as a part of outbreak response measures. Clinical and epidemiologic information was abstracted from the case investigation forms. Serum samples from patients were tested by using an immunoglobulin M (IgM)-capture and an IgG enzyme-linked immunosorbent assay ELIS...