Temporal and spatial distribution of the variants of merozoite surface protein-1 (MSP-1) in Plasmodium falciparum populations in Brazil

Detalhes bibliográficos
Autor(a) principal: Silva, N. S
Data de Publicação: 2000
Outros Autores: Silveira, L. A, Machado, Ricardo Luiz Dantas, Póvoa, Marinete Marins, Ferreira, Marcelo Urbano
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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spelling 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. 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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
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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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dc.publisher.none.fl_str_mv Taylor & Francis
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