Analysis of Toxoplasma gondii antigens with sera from toxoplasmosis patients

• Main Authors: Maria de la Luz Galván-Ramírez, Cecilia Guillén-Vargas, Rafael Saavedra-Durán, Alfonso Islas-Rodríguez
• Format: Article in Journal/Newspaper
• Language: English
• Published: Sociedade Brasileira de Medicina Tropical (SBMT) 1998
• Subjects: Toxoplasmosis; Acute; Chronic; Antigen; Toxoplasma gondii; Arctic medicine. Tropical medicine; RC955-962; Arctic
• Online Access: https://doaj.org/article/9e3b0ef40b2a4d8aa62092c5915a0e18

Some proteins of the Toxoplasma gondii are recognized by IgG, IgM and IgA antibodies in patients with acute and chronic toxoplasmosis, depending on the strain and stage of the Toxoplasma. Sixty-nine sera from immunocompetent individuals were studied through the Western-Blot Test: 20 has an acute infection, 29 has a chronic toxoplasmosis infection and 20 were healthy (seronegatives). The protein analysis revealed by IgG and IgM antibodies were performed through the Immunoplot method in order to know their recognition frequency (f) and be valued as infection markers. In the acute phase, the IgM antibodies showed a recognition frequency (f = 0.60) for the 60kDa protein, and in the chronic phase the IgG antibodies showed a recognition frequency (f = 0.68) for the 12kDa protein. Seronegatives revealed no type of band. The protein of 12kDa can be a diagnostic marker of the chronic phase while protein 60kDa of the acute phase of toxoplasmosis.