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dc.contributor.authorShi, Ya Ping-
dc.contributor.authorUdhayakumar, Venkatachalam-
dc.contributor.authorAlpers, Michael P-
dc.contributor.authorPóvoa, Marinete Marins-
dc.contributor.authorOloo, Aggrey J-
dc.contributor.authorRuebush, Trenton K-
dc.contributor.authorLal, Altaf A-
dc.date.accessioned2017-06-12T18:46:11Z-
dc.date.available2017-06-12T18:46:11Z-
dc.date.issued1993-
dc.identifier.citationSHI, Ya Ping et al. Natural antibody responses against the non-repeat-sequence-based B-cell epitopes of the Plasmodium falciparum circumsporozoite protein. Infection and Immunity, v. 61, n. 6. p. 2425-2433, June 1993.pt_BR
dc.identifier.issn0019-9567-
dc.identifier.urihttp://patua.iec.gov.br/handle/iec/2610-
dc.description.abstractSynthetic peptides and human serum or plasma samples from regions of Brazil, Papua New Guinea, and Kenya in which malaria is endemic were used to identify B-cell epitopes localized outside the repeat region of the circumsporozoite (CS) protein of the human malaria parasite Plasmodium falciparum. In agreement with recent observations, our results confirm the presence of two non-repeat-region-based B-cell epitopes of the CS protein. Of these two epitopes, only the region I epitope (KPKHKKLKQPGDGNP) was previously shown to be recognized by human sera. In this study, we show that human immune sera from malarious regions recognize another B-cell epitope, ENANANNAV, that resides carboxyl to the repeat region. The present study reveals that (i) the repeat-sequence (NANP)-based B-cell epitope of the CS protein is an immunogenic but not immunodominant epitope; (ii) the natural expression of antibody responses to the two non-repeat-region-based B-cell epitopes of the CS protein varies in different populations in which malaria is endemic; (iii) although the host immune responses to the non-repeat-region-based B-cell epitopes increase as a function of host age, this increase is not statistically significant for the region I epitope but is significant for the other epitope; and (iv) the Th1R T-cell site but not the Th2R or Th3R T-cell site induces an antibody response in the human host. This study confirms the immunogenic potential of non-repeat-region-based B-cell epitopes and suggests that antibody pressures may also contribute to the maintenance of the antigenic diversity of the CS protein.pt_BR
dc.language.isoengpt_BR
dc.publisherAmerican Society for Microbiologypt_BR
dc.rightsAcesso Abertopt_BR
dc.titleNatural antibody responses against the non-repeat-sequence-based B-cell epitopes of the Plasmodium falciparum circumsporozoite protein.pt_BR
dc.typeArtigopt_BR
dc.subject.decsPrimaryMalária Falciparum / diagnósticopt_BR
dc.subject.decsPrimaryPlasmodium falciparumpt_BR
dc.subject.decsPrimaryMaláriapt_BR
dc.subject.decsPrimaryAnticorpos / sanguept_BR
dc.subject.decsPrimaryFormação de Anticorpospt_BR
dc.creator.affilliationCenters for Disease Control.Division of Parasitic Diseases, National Center for Infectious Diseases. Malaria Branch. Atlanta, Georgia, USA.pt_BR
dc.creator.affilliationCenters for Disease Control.Division of Parasitic Diseases, National Center for Infectious Diseases. Malaria Branch. Atlanta, Georgia, USA.pt_BR
dc.creator.affilliationPapua New Guinea Institute of Medical Research. Goroka, Papua New Guineapt_BR
dc.creator.affilliationMinistério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.pt_BR
dc.creator.affilliationKenya Medical Research Institute. Vector Biology and Control Research Center. Kisumu, Kenya.pt_BR
dc.creator.affilliationCenters for Disease Control.Division of Parasitic Diseases, National Center for Infectious Diseases. Malaria Branch. Atlanta, Georgia, USA / Kenya Medical Research Institute. Vector Biology and Control Research Center. Kisumu, Kenya.pt_BR
dc.creator.affilliationCenters for Disease Control.Division of Parasitic Diseases, National Center for Infectious Diseases. Malaria Branch. Atlanta, Georgia, USA.pt_BR


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