Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil
Autor(a) principal: | |
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Data de Publicação: | 2000 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Digital do Instituto Evandro Chagas (Patuá) |
Texto Completo: | https://patua.iec.gov.br/handle/iec/1054 |
Resumo: | The polymorphic, merozoite surface protein-l (MSP-l) of Plasmodium falciparum, an antigen of the parasite's asexual blood-stages, is a major malaria-vaccine candidate. Nucleotide sequences of each variable domain or block of this antigen may be grouped into one of three possible allelic types (Kl, MAD20 and RO33), and 24 major types of the msp-J gene may be defined, as unique combinations of allelic types in these variable blocks. Isolates collected from the Brazilian Amazon, over a period of 14 years, have now bcen invcstigated, by PCR-based typing of the msp-J gene. Thirteen of the 24 possible gene-types were identified, and 336 P. falciparum cloncs were fully typed among 239 isolates. Most parasites (87%) belonged to one of the seven most frequent gene-types. Marked temporal variation in the distribution of msp-J variants was found when comparing parasites samplcd in the same sites at intervals of at least 5 years. Spatial variations were also found when comparing parasites from both neighbouring and distant sites within the Amazon Basin. The between-population variance in the frequencies of msp-J allelic types found in Brazil, as estimated by Wright's FST statistic, is of similar magnitude to that found in previous world-wide comparisons. The potential implications of these findings for the development of an MSP-lbased, multivalent malaria vaccine are discussed. |
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Silva, N. SSilveira, L. AMachado, Ricardo Luiz DantasPóvoa, Marinete MarinsFerreira, Marcelo Urbano2016-01-26T11:43:20Z2016-01-26T11:43:20Z2000SILVA, N.S. et al. Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil. Annals of Tropical Medicine and Parasitology, v. 94, n. 7, p. 675-688, 2000.0003-4983https://patua.iec.gov.br/handle/iec/10541080.00034980020006279The polymorphic, merozoite surface protein-l (MSP-l) of Plasmodium falciparum, an antigen of the parasite's asexual blood-stages, is a major malaria-vaccine candidate. Nucleotide sequences of each variable domain or block of this antigen may be grouped into one of three possible allelic types (Kl, MAD20 and RO33), and 24 major types of the msp-J gene may be defined, as unique combinations of allelic types in these variable blocks. Isolates collected from the Brazilian Amazon, over a period of 14 years, have now bcen invcstigated, by PCR-based typing of the msp-J gene. Thirteen of the 24 possible gene-types were identified, and 336 P. falciparum cloncs were fully typed among 239 isolates. Most parasites (87%) belonged to one of the seven most frequent gene-types. Marked temporal variation in the distribution of msp-J variants was found when comparing parasites samplcd in the same sites at intervals of at least 5 years. Spatial variations were also found when comparing parasites from both neighbouring and distant sites within the Amazon Basin. The between-population variance in the frequencies of msp-J allelic types found in Brazil, as estimated by Wright's FST statistic, is of similar magnitude to that found in previous world-wide comparisons. The potential implications of these findings for the development of an MSP-lbased, multivalent malaria vaccine are discussed.Faculdade de Medicina e Enfermagem de São José do Rio Preto. Departamento de Doenças Infecciosas e Parasitárias. Laboratório de Parasitologia Molecular. São José do Rio Preto, SP, Brasil.Universidade de São Paulo. Instituto de Ciências Biomédicas. Departamento de Parasitologia. São Paulo, SP, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Ministério da Saúde. Fundação Nacional de Saúde. Instituto Evandro Chagas. Belém, PA, Brasil.Faculdade de Medicina e Enfermagem de São José do Rio Preto. Departamento de Doenças Infecciosas e Parasitárias. Laboratório de Parasitologia Molecular. São José do Rio Preto, SP, Brasil.application/pdfengTaylor & FrancisTemporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazilinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleProteína 1 de Superfície de Merozoito / análiseProteína 1 de Superfície de Merozoito / provisão & distribuiçãoPlasmodium falciparumBrazil (BR)info:eu-repo/semantics/openAccessreponame:Repositório Digital do Instituto Evandro Chagas (Patuá)instname:Instituto Evandro Chagas (IEC)instacron:IECORIGINALTemporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil .pdfapplication/pdf2027441https://patua.iec.gov.br/bitstreams/06017ce3-c8ab-4ed4-8961-4def95aa7b3c/download950e8af3fa7a0fbc32254840910114b2MD51TEXTfile_1.pdf.txtfile_1.pdf.txtExtracted texttext/plain35336https://patua.iec.gov.br/bitstreams/0b7a5e23-36d8-4f77-b0b9-c859b6a48759/downloadcd916ee38ef45cf99d9f8ad8d7159503MD52Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil .pdf.txtTemporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil .pdf.txtExtracted texttext/plain35693https://patua.iec.gov.br/bitstreams/0bb47914-fd10-4eb4-a47c-80ba43a0747d/downloadba1bad32a48390a752a45492bbf7caa1MD56THUMBNAILTemporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil .pdf.jpgTemporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil .pdf.jpgGenerated Thumbnailimage/jpeg6083https://patua.iec.gov.br/bitstreams/c45f8a18-9eab-40b5-8535-c38626b09087/download8f24bf04f1bdfb042719f86759ec236eMD57LICENSElicense.txtlicense.txttext/plain; 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dc.title.pt_BR.fl_str_mv |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
title |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
spellingShingle |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil Silva, N. S Proteína 1 de Superfície de Merozoito / análise Proteína 1 de Superfície de Merozoito / provisão & distribuição Plasmodium falciparum Brazil (BR) |
title_short |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
title_full |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
title_fullStr |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
title_full_unstemmed |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
title_sort |
Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil |
author |
Silva, N. S |
author_facet |
Silva, N. S Silveira, L. A Machado, Ricardo Luiz Dantas Póvoa, Marinete Marins Ferreira, Marcelo Urbano |
author_role |
author |
author2 |
Silveira, L. A Machado, Ricardo Luiz Dantas Póvoa, Marinete Marins Ferreira, Marcelo Urbano |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Silva, N. S Silveira, L. A Machado, Ricardo Luiz Dantas Póvoa, Marinete Marins Ferreira, Marcelo Urbano |
dc.subject.decsPrimary.pt_BR.fl_str_mv |
Proteína 1 de Superfície de Merozoito / análise Proteína 1 de Superfície de Merozoito / provisão & distribuição Plasmodium falciparum Brazil (BR) |
topic |
Proteína 1 de Superfície de Merozoito / análise Proteína 1 de Superfície de Merozoito / provisão & distribuição Plasmodium falciparum Brazil (BR) |
description |
The polymorphic, merozoite surface protein-l (MSP-l) of Plasmodium falciparum, an antigen of the parasite's asexual blood-stages, is a major malaria-vaccine candidate. Nucleotide sequences of each variable domain or block of this antigen may be grouped into one of three possible allelic types (Kl, MAD20 and RO33), and 24 major types of the msp-J gene may be defined, as unique combinations of allelic types in these variable blocks. Isolates collected from the Brazilian Amazon, over a period of 14 years, have now bcen invcstigated, by PCR-based typing of the msp-J gene. Thirteen of the 24 possible gene-types were identified, and 336 P. falciparum cloncs were fully typed among 239 isolates. Most parasites (87%) belonged to one of the seven most frequent gene-types. Marked temporal variation in the distribution of msp-J variants was found when comparing parasites samplcd in the same sites at intervals of at least 5 years. Spatial variations were also found when comparing parasites from both neighbouring and distant sites within the Amazon Basin. The between-population variance in the frequencies of msp-J allelic types found in Brazil, as estimated by Wright's FST statistic, is of similar magnitude to that found in previous world-wide comparisons. The potential implications of these findings for the development of an MSP-lbased, multivalent malaria vaccine are discussed. |
publishDate |
2000 |
dc.date.issued.fl_str_mv |
2000 |
dc.date.accessioned.fl_str_mv |
2016-01-26T11:43:20Z |
dc.date.available.fl_str_mv |
2016-01-26T11:43:20Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SILVA, N.S. et al. Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil. Annals of Tropical Medicine and Parasitology, v. 94, n. 7, p. 675-688, 2000. |
dc.identifier.uri.fl_str_mv |
https://patua.iec.gov.br/handle/iec/1054 |
dc.identifier.issn.-.fl_str_mv |
0003-4983 |
dc.identifier.doi.-.fl_str_mv |
1080.00034980020006279 |
identifier_str_mv |
SILVA, N.S. et al. Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil. Annals of Tropical Medicine and Parasitology, v. 94, n. 7, p. 675-688, 2000. 0003-4983 1080.00034980020006279 |
url |
https://patua.iec.gov.br/handle/iec/1054 |
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eng |
language |
eng |
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info:eu-repo/semantics/openAccess |
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openAccess |
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Taylor & Francis |
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Taylor & Francis |
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