IgG recognizing 21-24 kDa and 30-33 kDa tachyzoite antigens show maximum avidity maturation during natural and accidental human toxoplasmosis

Autor: Margarita VILLAVEDRA, Julio BATTISTONI, Alberto NIETO
Jazyk: angličtina
Rok vydání: 1999
Předmět:
Zdroj: Revista do Instituto de Medicina Tropical de São Paulo, Vol 41, Iss 5, Pp 297-303 (1999)
Druh dokumentu: article
ISSN: 1678-9946
Popis: We describe the avidity maturation of IgGs in human toxoplasmosis using sequential serum samples from accidental and natural infections. In accidental cases, avidity increased continuously throughout infection while naturally infected patients showed a different profile. Twenty-five percent of sera from chronic patients having specific IgM positive results could be appropriately classified using exclusively the avidity test data. To take advantage of the potentiality of this technique, antigens recognized by IgG showing steeper avidity maturation were identified using immunoblot with KSCN elution. Two clusters of antigens, in the ranges of 21-24 kDa and 30-33 kDa, were identified as the ones that fulfill the aforementioned avidity characteristics.
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