Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection
Abstract Background Plasmodium vivax is the most widespread human malaria parasite outside Africa and is the predominant parasite in the Americas. Increasing reports of P. vivax disease severity, together with the emergence of drug-resistant strains, underscore the urgency of the development of vacc...
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ftdoajarticles:oai:doaj.org/article:67ea702b870a49ecbe26151fd0d57661 2023-05-15T15:18:14+02:00 Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection Natália Ketrin Almeida-de-Oliveira Lidiane Lima-Cury Rebecca de Abreu-Fernandes Aline de Rosa Lavigne Anielle de Pina-Costa Daiana de Souza Perce-da-Silva Marcos Catanho Patrícia Brasil Cláudio Tadeu Daniel-Ribeiro Maria de Fátima Ferreira-da-Cruz 2020-02-01T00:00:00Z https://doi.org/10.1186/s12936-020-03159-y https://doaj.org/article/67ea702b870a49ecbe26151fd0d57661 EN eng BMC http://link.springer.com/article/10.1186/s12936-020-03159-y https://doaj.org/toc/1475-2875 doi:10.1186/s12936-020-03159-y 1475-2875 https://doaj.org/article/67ea702b870a49ecbe26151fd0d57661 Malaria Journal, Vol 19, Iss 1, Pp 1-9 (2020) Malaria Plasmodium vivax Genetic diversity SNP DBP Positive selection Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 article 2020 ftdoajarticles https://doi.org/10.1186/s12936-020-03159-y 2022-12-31T03:48:25Z Abstract Background Plasmodium vivax is the most widespread human malaria parasite outside Africa and is the predominant parasite in the Americas. Increasing reports of P. vivax disease severity, together with the emergence of drug-resistant strains, underscore the urgency of the development of vaccines against P. vivax. Polymorphisms on DBP-II-gene could act as an immune evasion mechanism and, consequently, limited the vaccine efficacy. This study aimed to investigate the pvdbp-II genetic diversity in two Brazilian regions with different epidemiological patterns: the unstable transmission area in the Atlantic Forest (AF) of Rio de Janeiro and; the fixed malaria-endemic area in Brazilian Amazon (BA). Methods 216 Brazilian P. vivax infected blood samples, diagnosed by microscopic examination and PCR, were investigated. The region flanking pvdbp-II was amplified by PCR and sequenced. Genetic polymorphisms of pvdbp-II were estimated based on the number of segregating sites and nucleotide and haplotype diversities; the degree of differentiation between-regions was evaluated applying Wright’s statistics. Natural selection was calculated using the rate of nonsynonymous per synonymous substitutions with the Z-test, and the evolutionary distance was estimated based on the reconstructed tree. Results 79 samples from AF and 137 from BA were successfully sequenced. The analyses showed 28 polymorphic sites distributed in 21 codons, with only 5% of the samples Salvador 1 type. The highest rates of polymorphic sites were found in B- and T cell epitopes. Unexpectedly, the nucleotide diversity in pvdbp-II was higher in AF (0.01) than in BA (0.008). Among the 28 SNPs detected, 18 are shared between P. vivax isolates from AF and BA regions, but 8 SNPs were exclusively detected in AF—I322S, K371N, E385Q, E385T, K386T, K411N, I419L and I419R—and 2 (N375D and I419M) arose exclusively in BA. These findings could suggest the potential of these geographical clusters as population-specific-signatures that may be useful to track the ... Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Malaria Journal 19 1 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Malaria Plasmodium vivax Genetic diversity SNP DBP Positive selection Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
spellingShingle |
Malaria Plasmodium vivax Genetic diversity SNP DBP Positive selection Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 Natália Ketrin Almeida-de-Oliveira Lidiane Lima-Cury Rebecca de Abreu-Fernandes Aline de Rosa Lavigne Anielle de Pina-Costa Daiana de Souza Perce-da-Silva Marcos Catanho Patrícia Brasil Cláudio Tadeu Daniel-Ribeiro Maria de Fátima Ferreira-da-Cruz Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection |
topic_facet |
Malaria Plasmodium vivax Genetic diversity SNP DBP Positive selection Arctic medicine. Tropical medicine RC955-962 Infectious and parasitic diseases RC109-216 |
description |
Abstract Background Plasmodium vivax is the most widespread human malaria parasite outside Africa and is the predominant parasite in the Americas. Increasing reports of P. vivax disease severity, together with the emergence of drug-resistant strains, underscore the urgency of the development of vaccines against P. vivax. Polymorphisms on DBP-II-gene could act as an immune evasion mechanism and, consequently, limited the vaccine efficacy. This study aimed to investigate the pvdbp-II genetic diversity in two Brazilian regions with different epidemiological patterns: the unstable transmission area in the Atlantic Forest (AF) of Rio de Janeiro and; the fixed malaria-endemic area in Brazilian Amazon (BA). Methods 216 Brazilian P. vivax infected blood samples, diagnosed by microscopic examination and PCR, were investigated. The region flanking pvdbp-II was amplified by PCR and sequenced. Genetic polymorphisms of pvdbp-II were estimated based on the number of segregating sites and nucleotide and haplotype diversities; the degree of differentiation between-regions was evaluated applying Wright’s statistics. Natural selection was calculated using the rate of nonsynonymous per synonymous substitutions with the Z-test, and the evolutionary distance was estimated based on the reconstructed tree. Results 79 samples from AF and 137 from BA were successfully sequenced. The analyses showed 28 polymorphic sites distributed in 21 codons, with only 5% of the samples Salvador 1 type. The highest rates of polymorphic sites were found in B- and T cell epitopes. Unexpectedly, the nucleotide diversity in pvdbp-II was higher in AF (0.01) than in BA (0.008). Among the 28 SNPs detected, 18 are shared between P. vivax isolates from AF and BA regions, but 8 SNPs were exclusively detected in AF—I322S, K371N, E385Q, E385T, K386T, K411N, I419L and I419R—and 2 (N375D and I419M) arose exclusively in BA. These findings could suggest the potential of these geographical clusters as population-specific-signatures that may be useful to track the ... |
format |
Article in Journal/Newspaper |
author |
Natália Ketrin Almeida-de-Oliveira Lidiane Lima-Cury Rebecca de Abreu-Fernandes Aline de Rosa Lavigne Anielle de Pina-Costa Daiana de Souza Perce-da-Silva Marcos Catanho Patrícia Brasil Cláudio Tadeu Daniel-Ribeiro Maria de Fátima Ferreira-da-Cruz |
author_facet |
Natália Ketrin Almeida-de-Oliveira Lidiane Lima-Cury Rebecca de Abreu-Fernandes Aline de Rosa Lavigne Anielle de Pina-Costa Daiana de Souza Perce-da-Silva Marcos Catanho Patrícia Brasil Cláudio Tadeu Daniel-Ribeiro Maria de Fátima Ferreira-da-Cruz |
author_sort |
Natália Ketrin Almeida-de-Oliveira |
title |
Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection |
title_short |
Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection |
title_full |
Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection |
title_fullStr |
Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection |
title_full_unstemmed |
Extensive genetic diversity of Plasmodium vivax dbp-II in Rio de Janeiro Atlantic Forest and Brazilian Amazon Basin: evidence of positive selection |
title_sort |
extensive genetic diversity of plasmodium vivax dbp-ii in rio de janeiro atlantic forest and brazilian amazon basin: evidence of positive selection |
publisher |
BMC |
publishDate |
2020 |
url |
https://doi.org/10.1186/s12936-020-03159-y https://doaj.org/article/67ea702b870a49ecbe26151fd0d57661 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Malaria Journal, Vol 19, Iss 1, Pp 1-9 (2020) |
op_relation |
http://link.springer.com/article/10.1186/s12936-020-03159-y https://doaj.org/toc/1475-2875 doi:10.1186/s12936-020-03159-y 1475-2875 https://doaj.org/article/67ea702b870a49ecbe26151fd0d57661 |
op_doi |
https://doi.org/10.1186/s12936-020-03159-y |
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Malaria Journal |
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19 |
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1766348453269471232 |