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. 1987 Aug;69(2):291–298.

Sera of Schistosoma japonicum-infected patients cross-react with diagnostic 31/32 kD proteins of S. mansoni.

A Ruppel 1, Y E Shi 1, D X Wei 1, H J Diesfeld 1
PMCID: PMC1542415  PMID: 3115655

Abstract

Schistosoma mansoni adult worm antigens were tested for cross-reactions with sera obtained from patients infected with S. japonicum. The sera consistently recognized a doublet of bands, in immunoblots, which had molecular weights of approximately 31 and 32 kilodaltons (kD). This reaction was found to be markedly reduced with sera of patients who had received chemotherapy and who had a low risk of reinfection. Sera obtained from uninfected persons or from patients infected with other parasites never reacted with the antigen doublet. Schistosoma japonicum-infected mice produced antibodies during prepatency which predominantly recognized antigens of this molecular weight range in immunoblots performed with S. mansoni or S. japonicum proteins. Sera from S. mansoni-infected patients with a high specificity for the diagnostic S. mansoni-antigen cross-reacted with a corresponding component also in S. japonicum worms. Immunofluorescence assays performed with sera of schistosomiasis japonica patients confirmed earlier results localizing the diagnostic 31/32 kD antigens in the gut of S. mansoni. These cross-reacting 31/32 kD S. mansoni protein antigens may be applied for the immunodiagnosis of schistosomiasis japonica.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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