Malária adquirida durante atividade entomológica na Serra do Mar, região Sudeste do Brasil

Carréri-Bruno, Glória Cristina; Ciaravolo, Ricardo Mário de Carvalho; Pereira, Mariza

doi:10.1590/s0034-89101995000200010

Cited by 4 publications

(4 citation statements)

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“…A maior parte trata-se de relatos bem descritos de focos de autoctonia nas décadas de 80 e 90 [16][17][18][19][20] . Em 2004, foi publicado um estudo sobre os aspectos da vigilância epidemiológica de todos os casos de malária no Estado de São Paulo no período de 1983 a 2003 7 , incluindo considerações sobre a malária autóctone.…”

Section: Discussionunclassified

Malária autóctone notificada no Estado de São Paulo: aspectos clínicos e epidemiológicos de 1980 a 2007

Couto

Latorre

Santi³

et al. 2010

Rev. Soc. Bras. Med. Trop.

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INTRODUÇÃO: A malária autóctone no Estado de São Paulo caracteriza-se por surtos esporádicos na região oeste e transmissão persistente na região leste onde ocorrem casos oligossintomáticos com baixa parasitemia pelo Plasmodium vivax. Os objetivos deste estudo foram: analisar a completitude das fichas de notificação de malária autóctone; estimar a tendência da incidência de casos autóctones no ESP de 1980 a 2007; analisar o comportamento clínico e epidemiológico dos casos em duas regiões de autoctonia neste período. MÉTODOS: Foi realizado um estudo descritivo com 18 variáveis das FIN de malária do ESP, analisadas em duas regiões e em dois períodos (1980-1993 e 1994-2007). Fontes de dados: SUCEN/SES/SP, SINAN/CVE/SES/SP e DATASUS. RESULTADOS: A completitude foi superior a 85% em 11 variáveis. A tendência da incidência foi decrescente. Foram notificados 821 casos autóctones, 91,6% na região leste, predominando Plasmodium vivax. A infecção assintomática teve maior porcentagem no segundo período (p<0,001). CONCLUSÕES: A completitude das informações foi considerada satisfatória. As diferenças clínicas encontradas merecem atenção da vigilância epidemiológica que deve lidar com o desafio da infecção assintomática por Plasmodium.

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Section: Discussionunclassified

Malária autóctone notificada no Estado de São Paulo: aspectos clínicos e epidemiológicos de 1980 a 2007

Couto

Latorre

Santi³

et al. 2010

Rev. Soc. Bras. Med. Trop.

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“…Human landing collection techniques followed protocol 34 6 . The malaria transmission risk to researchers during an entomological field survey can be considered low because no malaria case has been reported for the study area.…”

Section: Methodsmentioning

confidence: 99%

“…Currently, the collection of malaria mosquitoes landing on human baits is considered to be the most representative method for determining human landing activity because female mosquitoes are subsequently collected as they attempt to feed on the human collectors 6 . Frequent reports of malaria transmission to collectors, even in regions with low prevalence, have led to in serious ethical considerations and reduce the readiness of technicians in health organizations to apply these techniques 7 .…”

Section: Introductionmentioning

confidence: 99%

Comparison of capture methods for the diagnosis of adult anopheline populations from State of Mato Grosso, Brazil

Missawa

Ribeiro

Maciel

et al. 2011

Rev. Soc. Bras. Med. Trop.

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Introduction: The present study compares human landing catches of primary malaria vectors with two alternative methods of capture: the Shannon trap and the Mosquito magnet. Methods: This study used regression models to adjust capture data to a negative binominal distribution. Results: Capture numbers and relative percentages obtained from the three methods vary strongly between species. The highest overall captures were obtained for Anopheles triannulatus with captures for the Shannon trap and the Mosquito magnet measuring more than 330% higher than captures obtained by human landings. For Anopheles darlingi, captures by the Shannon trap and the Mosquito magnet were about 14% and 26% of human landing catches, respectively. Another species with malaria transmission potential that was not sampled by human landing captures weascaptured by the Shannon trap and the Mosquito magnet (Anopheles oswaldoi). Both alternative sampling techniques can predict the human landing of Anopheles triannulatus, but without proportionality. Models for Anopheles darlingi counts, after totaling daily captures, are significant and proportional, but prediction models are more reliable when using the Shannon trap compared with the Mosquito magnet captures. Conclusions: These alternative capture methods can be partially recommended for the substitution of human landing captures or, at least, as complementary forms of monitoring for malarial mosquitoes.

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“…Humans are susceptible to P . simium , but the natural infections described so far were accidentally acquired [ 14 , 19 – 23 ].…”

Section: Introductionmentioning

confidence: 99%

Plasmodium simium, a Plasmodium vivax-Related Malaria Parasite: Genetic Variability of Duffy Binding Protein II and the Duffy Antigen/Receptor for Chemokines

et al. 2015

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Plasmodium simium is a parasite from New World monkeys that is most closely related to the human malaria parasite Plasmodium vivax; it also naturally infects humans. The blood-stage infection of P. vivax depends on Duffy binding protein II (PvDBPII) and its cognate receptor on erythrocytes, the Duffy antigen receptor for chemokines (hDARC), but there is no information on the P. simium erythrocytic invasion pathway. The genes encoding P. simium DBP (PsDBPII) and simian DARC (sDARC) were sequenced from Southern brown howler monkeys (Alouatta guariba clamitans) naturally infected with P. simium because P. simium may also depend on the DBPII/DARC interaction. The sequences of DBP binding domains from P. vivax and P. simium were highly similar. However, the genetic variability of PsDBPII was lower than that of PvDBPII. Phylogenetic analyses demonstrated that these genes were strictly related and clustered in the same clade of the evolutionary tree. DARC from A. clamitans was also sequenced and contained three new non-synonymous substitutions. None of these substitutions were located in the N-terminal domain of DARC, which interacts directly with DBPII. The interaction between sDARC and PvDBPII was evaluated using a cytoadherence assay of COS7 cells expressing PvDBPII on their surfaces. Inhibitory binding assays in vitro demonstrated that antibodies from monkey sera blocked the interaction between COS-7 cells expressing PvDBPII and hDARC-positive erythrocytes. Taken together, phylogenetic analyses reinforced the hypothesis that the host switch from humans to monkeys may have occurred very recently in evolution, which sheds light on the evolutionary history of new world plasmodia. Further invasion studies would confirm whether P. simium depends on DBP/DARC to trigger internalization into red blood cells.

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Malária adquirida durante atividade entomológica na Serra do Mar, região Sudeste do Brasil

Cited by 4 publications

References 1 publication

Malária autóctone notificada no Estado de São Paulo: aspectos clínicos e epidemiológicos de 1980 a 2007

Malária autóctone notificada no Estado de São Paulo: aspectos clínicos e epidemiológicos de 1980 a 2007

Comparison of capture methods for the diagnosis of adult anopheline populations from State of Mato Grosso, Brazil

Plasmodium simium, a Plasmodium vivax-Related Malaria Parasite: Genetic Variability of Duffy Binding Protein II and the Duffy Antigen/Receptor for Chemokines

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