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Clinical and Vaccine Immunology, March 2007, p. 220-225, Vol. 14, No. 3
1071-412X/07/$08.00+0     doi:10.1128/CVI.00419-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.

Use of MAG1 Recombinant Antigen for Diagnosis of Toxoplasma gondii Infection in Humans{triangledown}

Lucyna Holec, Elzbieta Hiszczynska-Sawicka, Artur Gasior, Anna Brillowska-Dabrowska, and Józef Kur*

Gdansk University of Technology, Chemical Faculty, Department of Microbiology, Gdansk, Poland

Received 7 November 2006/ Returned for modification 11 December 2006/ Accepted 19 December 2006

This paper describes the cloning, purification, and serological applications of matrix antigen MAG1 of Toxoplasma gondii. The expression system used allows the production of a large amount of T. gondii recombinant protein, which was assessed for its potential use in an enzyme-linked immunosorbent assay (ELISA) for detection of T. gondii infection in humans. Serum samples from 117 patients with different stages of infection, along with 10 serum samples from seronegative patients obtained for routine diagnostic tests, were used. The results were compared with those of an ELISA that uses a native T. gondii antigen extract. The MAG1 antigen detected antibodies more frequently from the acute stage (97.3%) than from the chronic stage (7.5%) of toxoplasmosis. Hence, this antigen may be used as a tool for detection of T. gondii immunoglobulin G antibodies in persons with acute toxoplasmosis.

* Corresponding author. Mailing address: Gdansk University of Technology, Department of Microbiology, ul. Narutowicza 11/12, 80-952 Gdansk, Poland. Phone and fax: 48 58 3471822. E-mail: kur{at}chem.pg.gda.pl.

{triangledown} Published ahead of print on 3 January 2007.

Clinical and Vaccine Immunology, March 2007, p. 220-225, Vol. 14, No. 3
1071-412X/07/$08.00+0     doi:10.1128/CVI.00419-06
Copyright © 2007, American Society for Microbiology. All Rights Reserved.





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Copyright © 2007 by the American Society for Microbiology. All rights reserved.