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Am. J. Trop. Med. Hyg., 58(5), 1998, pp. 543-550
Copyright © 1998 by The American Society of Tropical Medicine and Hygiene

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American Journal of Tropical Medicine and Hygiene, Vol 58, Issue 5, 543-550
Copyright © 1998 by American Society of Tropical Medicine and Hygiene

Research Articles


Use of monoclonal antibodies prepared against Schistosoma mansoni hatching fluid antigens for demonstration of Schistosoma haematobium circulating egg antigens in urine

HA Nibbeling, AI Kahama, RJ Van Zeyl, and AM Deelder

A panel of 17 monoclonal antibodies (MAbs) against Schistosoma soluble egg antigens (SEAs) was produced from BALB/c mice immunized with antigens secreted/excreted by Schistosoma mansoni eggs. In this study, we demonstrate that 16 MAbs were reactive with S. haematobium SEA in addition to S. mansoni SEA. The MAbs were tested as potential immunodiagnostic reagents in a homologous sandwich ELISA format to detect circulating soluble egg antigens (CSEAs) in serum and urine samples of S. mansoni- or S. haematobium-infected individuals. When samples of S. mansoni-infected individuals were tested, none of these MAbs performed as good as the previously described S. mansoni-specific 114-5B1-A and 114-4D12-A MAbs. However, 11 MAbs (of the IgM isotype) detected CSEA in urine samples of S. haematobium-infected individuals. Three MAbs, 290-2E6-A, 291-3D5-A, and 291-5D5-A, were selected for a pilot study with 47 urine samples of S. haematobium-infected individuals from Kenya. The CSEA levels detected with each of these ELISAs showed a significant correlation with urinary egg counts (Spearman rho > 0.37, P < 0.01) and with each other (Spearman rho > 0.74, P < 0.001). Based on the 92% specificity and 90% sensitivity of the assay, the ELISA using MAb 290-2E6-A was found to be the most promising assay for immunodiagnosis of S. haematobium infections.


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Copyright © 1998 by the American Society of Tropical Medicine and Hygiene.