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Bilheiro AB, Costa GDS, Araújo MS, Ribeiro WAR, Finamore-Araújo P, Moreira OC, Medeiros JF, Fontes G, Camargo LMA. Detection and Genotyping of Trypanosoma cruzi Samples in Species of Genus Rhodnius from Different Environments in the Brazilian Amazon. Vector Borne Zoonotic Dis 2024; 24:95-103. [PMID: 38165392 DOI: 10.1089/vbz.2023.0082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024] Open
Abstract
Background: In the Amazon region, several species of triatomines occur in the natural environments. Among them, species of the genus Rhodnius are a risk to human populations due to their high rates of infection with Trypanosoma cruzi. The aim of this study was to identify the T. cruzi genotypes in Rhodnius specimens and their relationship with sylvatic hosts from different environments in the Brazilian Amazon. Methods: A total of 492 triatomines were collected from the municipalities of Monte Negro, Rondônia state, and Humaitá, Amazonas state, 382 of them being nymphs and 110 adults. Genotyping of T. cruzi in six discrete typing units (DTUs) was performed using conventional multilocus PCR. The triatomines that were positive for T. cruzi and engorged with blood were also targeted for amplification of the cytochrome B (cytB) gene to identify bloodmeal sources. Results: Of the 162 positive samples, the identified DTUs were TcI (87.65%) and TcIV (12.35%). It was observed that 102 specimens were engorged with a variety of bloodmeals. Triatomines infected with TcI were associated with DNA of all identified vertebrates, except Plecturocebus brunneus. TcIV was detected in triatomines that fed on Coendou prehensilis, Didelphis marsupialis, Mabuya nigropunctata, P. brunneus, Pithecia irrorata, Sapajus apella, and Tamandua tetradactyla. Conclusion: Results highlight the need to understand the patterns of T. cruzi genotypes in Rhodnius spp. and their association with sylvatic hosts to better elucidate their role in the transmission of Chagas disease in the Amazon region.
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Affiliation(s)
- Adriana Benatti Bilheiro
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de São João del Rei, Divinópolis, MG, Brazil
| | - Glaucilene da Silva Costa
- Laboratório de Saúde Pública-LACEN, Núcleo de Biologia Animal e Entomologia Médica, Porto Velho, RO, Brazil
| | - Maisa Silva Araújo
- Fundação Oswaldo Cruz/Fiocruz Rondônia, Porto Velho, RO, Brazil
- Centro de Pesquisa em Medicina Tropical de Rondônia (CEPEM)/Secretaria de Estado da Saúde de Rondônia, Porto Velho, RO, Brazil
| | | | - Paula Finamore-Araújo
- Laboratório de Virologia e Parasitologia Molecular, Instituto Oswaldo Cruz/IOC, Rio de Janeiro, RJ, Brazil
| | - Otacílio C Moreira
- Laboratório de Virologia e Parasitologia Molecular, Instituto Oswaldo Cruz/IOC, Rio de Janeiro, RJ, Brazil
| | - Jansen Fernandes Medeiros
- Fundação Oswaldo Cruz/Fiocruz Rondônia, Porto Velho, RO, Brazil
- Programa de Pós-Graduação em Biologia Experimental, Fundação Universidade Federal de Rondônia, Porto Velho, RO, Brazil
- Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO, Porto Velho, RO, Brazil
| | - Gilberto Fontes
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de São João del Rei, Divinópolis, MG, Brazil
- Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO, Porto Velho, RO, Brazil
| | - Luís Marcelo Aranha Camargo
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de São João del Rei, Divinópolis, MG, Brazil
- Centro de Pesquisa em Medicina Tropical de Rondônia (CEPEM)/Secretaria de Estado da Saúde de Rondônia, Porto Velho, RO, Brazil
- Instituto de Ciências Biomédicas 5, Universidade de São Paulo (ICB-5, USP), Monte Negro, RO, Brazil
- Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO, Porto Velho, RO, Brazil
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2
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Virgilio LR, de Melo HPS, da Silva Lima F, Takemoto RM, Camargo LMA, de Oliveira Meneguetti DU. Fish endoparasite metacommunity in environments with different degrees of conservation in the western Brazilian Amazon. Parasitol Res 2023; 122:2773-2793. [PMID: 37953321 DOI: 10.1007/s00436-023-08013-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Accepted: 10/04/2023] [Indexed: 11/14/2023]
Abstract
Parasite communities correspond to the definition of metacommunity, as species interact and disperse within hosts. The present study evaluated parasite metacommunities in a tropical floodplain. The study was conducted in the Western Amazon around the municipalities of Cruzeiro do Sul, state of Acre, and Guajará, state of Amazonas, Brazil. Six sampling sites were selected and grouped into conserved and degraded environments. Fish were caught between periods of drought and flood, using passive and active sampling methods; in the laboratory, they were measured weighed, and necropsied. Parasites found were fixed, evaluated, and identified. Physical and chemical variables and environmental conservation characteristics were measured in all sites. Diversity index, ANOVA, Tukey, local contribution to beta diversity (LCBD), species contribution to beta diversity by individual species (SCBD), and variance partitioning were summarized. The α species diversity increased in conserved environments and varied between seasonal periods, mainly in detritivorous and omnivorous hosts. Local contributions to beta diversity showed significantly higher values in conserved environments for the endoparasite fauna of piscivorous and omnivorous hosts, indicating that these environments presented unique parasite infracommunities and revealing the conservation status of these environments. Variations in infracommunities were explained mainly by niche-based processes, including environmental conditions, degree of conservation, and host characteristics. Thus, these data will serve as a tool to understand the way parasite communities are structured, which is important information for the management and conservation of aquatic environments.
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Affiliation(s)
- Lucena Rocha Virgilio
- Postgraduate Program in Biodiversity and Biotechnology, Bionorte, Federal University of Acre, Rio Branco, Acre, Brazil.
| | - Henrique Paulo Silva de Melo
- Laboratory of Aquatic Ecology, Federal University of Acre, Campus Floresta, Estrada Do Canela Fina, Cruzeiro Do Sul, Acre, Brazil
| | - Fabricia da Silva Lima
- Laboratory of Aquatic Ecology, Federal University of Acre, Campus Floresta, Estrada Do Canela Fina, Cruzeiro Do Sul, Acre, Brazil
| | - Ricardo Massato Takemoto
- Research Center in Limnology, Ichthyology and Aquaculture, Laboratory of Ichthyoparasitology, State University of Maringá, Maringá, Paraná, Brazil
| | | | - Dionatas Ulises de Oliveira Meneguetti
- Postgraduate Program in Biodiversity and Biotechnology, Bionorte, Federal University of Acre, Rio Branco, Acre, Brazil
- Laboratory of Tropical Medicine, Federal University of Acre, Rio Branco, Acre, Brazil
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3
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Virgilio LR, da Silva Lima F, Keppeler EC, Takemoto RM, Camargo LMA, de Oliveira Meneguetti DU. Endoparasite Communities of Fish at Different Trophic Levels in the Western Brazilian Amazon: Human, Environmental and Seasonal Influence. Acta Parasitol 2023; 68:612-636. [PMID: 37395992 DOI: 10.1007/s11686-023-00685-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 05/08/2023] [Indexed: 07/04/2023]
Abstract
PURPOSE The composition of the fish parasite community depends on several factors related to the environment, the host and its biology. This study aimed to evaluate the influence of environmental factors in anthropized and conserved areas on the endoparasite community structure in fish at different trophic levels, in addition to verifying that some species of Digenea are indicators of conserved environments. METHODS The study was carried out in the Upper Juruá River region, Western Amazon, Brazil. Six sampling sites were selected in this region and grouped in conserved and degraded environments. Fish were caught from periods of drought and flood, using passive and active sampling methods. Fish collected were measured, weighed, necropsied and the parasites found were counted, fixed, and subjected to morphological analysis. Physical and chemical variables and environmental characteristics were measured in all sites. RESULTS The present study demonstrated that environmental variables in a floodplain system can influence the richness, diversity, composition and abundance of endoparasites in hosts at different trophic levels. In addition, anthropized environments may favor the abundance of some generalist parasites and present a more homogeneous biota between seasonal periods compared to conserved environments. CONCLUSION Study contributed with information supporting the importance of conservation of aquatic environments, and demonstrated that fish parasites can be excellent indicators of environments.
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Affiliation(s)
- Lucena Rocha Virgilio
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Bionorte, Universidade Federal do Acre, Rio Branco, Acre, Brazil.
| | - Fabricia da Silva Lima
- Laboratório de Ecologia Aquática, Universidade Federal do Acre, Campus Floresta, Cruzeiro do Sul, Acre, Brazil
| | - Erlei Cassiano Keppeler
- Laboratório de Ecologia Aquática, Universidade Federal do Acre, Campus Floresta, Cruzeiro do Sul, Acre, Brazil
| | - Ricardo Massato Takemoto
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Laboratório de Ictioparasitologia, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | | | - Dionatas Ulises de Oliveira Meneguetti
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Bionorte, Universidade Federal do Acre, Rio Branco, Acre, Brazil
- Laboratório de Medicina Tropical, Universidade Federal do Acre, Rio Branco, Acre, Brazil
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4
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Bilheiro AB, Costa GDS, Araújo MDS, Ribeiro WAR, Medeiros JF, Camargo LMA. Corrigendum to 'Identification of blood meal sources in species of genus Rhodnius in four different environments in the Brazilian amazon' Acta Tropica 232 (2022) 106486. Acta Trop 2022; 235:106663. [PMID: 36038369 DOI: 10.1016/j.actatropica.2022.106663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- Adriana Benatti Bilheiro
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Federal de São João del Rei, Divinopolis, MG, Brazil.
| | - Glaucilene da Silva Costa
- Programa de Pós-Graduação em Biologia Experimental, Fundação Universidade Federal de Rondônia, BR 364, Km 9.5, Porto Velho, RO 76801-059, Brazil; Fundação Oswaldo Cruz/Fiocruz Rondônia, Porto Velho, Brazil
| | | | | | - Jansen Fernandes Medeiros
- Programa de Pós-Graduação em Biologia Experimental, Fundação Universidade Federal de Rondônia, BR 364, Km 9.5, Porto Velho, RO 76801-059, Brazil; Fundação Oswaldo Cruz/Fiocruz Rondônia, Porto Velho, Brazil
| | - Luís Marcelo Aranha Camargo
- Instituto de Ciências Biomédicas 5, Universidade de São Paulo (ICB-5, USP), Monte Negro, Brazil; Centro de Pesquisa em Medicina Tropical de Rondônia (CEPEM)/Secretaria de Estado da Saúde de Rondônia, Porto Velho, Brazil; Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO, Porto Velho, Brazil; Departamento de Medicina, Centro Universitário São Lucas, Porto Velho, Brazil
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5
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Henriques AL, Krolow TK, Zamarchi TBDO, Camargo LMA. Description of Tabanusrondoniensis (Diptera: Tabanidae), a new species of horsefly from the State of Rondônia, Brazil. Biodivers Data J 2022; 10:e76904. [PMID: 36761614 PMCID: PMC9848620 DOI: 10.3897/bdj.10.e76904] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/10/2021] [Indexed: 11/12/2022] Open
Abstract
Background The genus Tabanus Linnaeus has a worldwide distribution and is the richest in species; however, it is probably not monophyletic. In the Neotropical Region, its richness is certainly underestimated, mainly due to the large number of species and the absence of recent taxonomic revisions. New information We describe Tabanusrondoniensis sp. n. from the State of Rondônia, Brazil, based on a conspicuous tabanid species possibly related to the T.nebulosus species group. Diagnosis, discussion and illustrations are also provided.
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Affiliation(s)
- Augusto Loureiro Henriques
- Instituto Nacional de Pesquisas da Amazônia, Manaus, BrazilInstituto Nacional de Pesquisas da AmazôniaManausBrazil
| | - Tiago Kütter Krolow
- Universidade Federal do Tocantins, Porto Nacional, BrazilUniversidade Federal do TocantinsPorto NacionalBrazil
| | - Tallita Beatriz de Oliveira Zamarchi
- Fundação Oswaldo Cruz, Instituto Leônidas e Maria Deane, Manaus, AM, Brasil., Manaus, BrazilFundação Oswaldo Cruz, Instituto Leônidas e Maria Deane, Manaus, AM, Brasil.ManausBrazil
| | - Luís Marcelo Aranha Camargo
- Universidade de São Paulo, Instituto de Ciências Biomédicas 5, Monte Negro, RO, Brasil., Monte Negro, BrazilUniversidade de São Paulo, Instituto de Ciências Biomédicas 5, Monte Negro, RO, Brasil.Monte NegroBrazil
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6
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Costa PDSS, Maciel-Fiuza MF, Kowalski TW, Fraga LR, Feira MF, Camargo LMA, Caldoncelli DIDO, Silveira MIDS, Schuler-Faccini L, Vianna FSL. Evaluation of the influence of genetic variants in Cereblon gene on the response to the treatment of erythema nodosum leprosum with thalidomide. Mem Inst Oswaldo Cruz 2022; 117:e220039. [DOI: 10.1590/0074-02760220039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Accepted: 10/04/2022] [Indexed: 11/13/2022] Open
Affiliation(s)
- Perpétua do Socorro Silva Costa
- Universidade Federal do Rio Grande do Sul, Brazil; Instituto Nacional de Genética Médica Populacional, Brasil; Universidade Federal do Maranhão, Brazil
| | - Miriãn Ferrão Maciel-Fiuza
- Universidade Federal do Rio Grande do Sul, Brazil; Instituto Nacional de Genética Médica Populacional, Brasil; Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil
| | - Thayne Woycinck Kowalski
- Universidade Federal do Rio Grande do Sul, Brazil; Instituto Nacional de Genética Médica Populacional, Brasil; Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Brasil
| | - Lucas Rosa Fraga
- Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | - Mariléa Furtado Feira
- Universidade Federal do Rio Grande do Sul, Brazil; Instituto Nacional de Genética Médica Populacional, Brasil; Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil
| | - Luís Marcelo Aranha Camargo
- Universidade de São Paulo, Brazil; Centro de Pesquisa em Medicina Tropical, Brasil; Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, Brasil; Centro Universitário São Lucas, Brazil
| | | | | | - Lavínia Schuler-Faccini
- Universidade Federal do Rio Grande do Sul, Brazil; Instituto Nacional de Genética Médica Populacional, Brasil; Hospital de Clínicas de Porto Alegre, Brasil
| | - Fernanda Sales Luiz Vianna
- Universidade Federal do Rio Grande do Sul, Brazil; Instituto Nacional de Genética Médica Populacional, Brasil; Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Brasil; Universidade Federal do Rio Grande do Sul, Brazil
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7
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Tojal SD, Meneguetti DUDO, Martins TF, Labruna MB, Aguirre ADAR, Siebra EAM, Cruz KSD, Camargo LMA. First report of Amblyomma latepunctatum and the second record of Ixodes luciae in the state of Acre, Brazil. ACTA ACUST UNITED AC 2021; 30:e007221. [PMID: 34259742 DOI: 10.1590/s1984-29612021063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 06/15/2021] [Indexed: 11/22/2022]
Abstract
The state of Acre is in the western part of the Brazilian Amazon region and few studies involving ticks are available. The aim of the present study was to provide the first report of occurrence of Amblyomma latepunctatum and the second record of Ixodes luciae in Acre. Ticks were collected in October 2020 inside an open forested area in the municipality of Rio Branco, the state capital of Acre. Ixodid ticks were identified according to their external morphological characteristics. Three specimens were found on the vegetation by means of a visual search and were identified as Amblyomma scalpturatum (one male and one female) and Amblyomma latepunctatum (one male). Another specimen was found parasitizing a Didelphis marsupialis female that was caught using a Tomahawk trap; this was identified as Ixodes luciae (one male). This first report of A. latepunctatum in the state of Acre increases the number of species recorded here to 22. In addition, presence of I. luciae is confirmed in this state (second record), in the western Brazilian Amazon region.
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Affiliation(s)
- Simone Delgado Tojal
- Programa de Pós-graduação em Ciências da Saúde, Universidade Federal São João del-Rei - UFSJ, Divinópolis, MG, Brasil.,Colégio de Aplicação, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Colégio de Aplicação, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil.,Programa de Pós-graduação em Ciências da Saúde na Amazônia Ocidental, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil
| | - Thiago Fernandes Martins
- Faculdade de Medicina Veterinária e Zootecnia - FMVZ, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | - Marcelo Bahia Labruna
- Faculdade de Medicina Veterinária e Zootecnia - FMVZ, Universidade de São Paulo - USP, São Paulo, SP, Brasil
| | | | | | - Karoline Silva da Cruz
- Programa de Pós-graduação em Ciências da Saúde na Amazônia Ocidental, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil
| | - Luís Marcelo Aranha Camargo
- Programa de Pós-graduação em Ciências da Saúde na Amazônia Ocidental, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil.,Instituto de Ciências Biomédicas - ICB5, Universidade de São Paulo - USP, Monte Negro, RO, Brasil.,Instituto Nacional de Epidemiologia da Amazônia Ocidental - INCT-EpiAmO, Porto Velho, RO, Brasil.,Centro de Pesquisas em Medicina Tropical - CEPEM, Porto Velho, RO, Brasil.,Departamento de Medicina, Centro Universitário São Lucas - UniSL, Porto Velho, RO, Brasil
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8
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Virgilio LR, Machado EO, Freire AN, Takemoto RM, Camargo LMA, Meneguetti DUDO. Ergasilus colomesus (Copepoda: Ergasilidae) parasitizing gills of Colomesus asellus(Tetraodontiformes: Tetraodontidae) in the western Brazilian Amazon. Ann Parasitol 2021; 67:123-127. [PMID: 34022783 DOI: 10.17420/ap6701.320] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Records about Ergasilus colomesus and its interaction with the host fish are scarce. There is only a report describing this species from specimens collected from the gills of Colomelus asellus, in the State of Amazonas, Brazil. In this sense, this is the first record of E. colomesus parasitizing C. asellus for the southwest of the Brazilian Amazon. Fish were collected in the Môa river, located in the municipality of Cruzeiro do Sul, State of Acre, Brazil, during drought and flood. The fish captured were analyzed, and the parasites found were measured, fixed, and identified. We calculated the parasite indices and evaluated whether the seasonal periods (drought and flood) influence the levels of parasite infestation in their hosts. The prevalence and infestation of E. colomesus in C. asellus were higher in the drought, indicating that the infestation of this copepod probably occurred during this period. The lower number of individuals found during the flood indicates that this is the period when E. colomesus detaches from its host to release of eggs into the environment. In this sense, this study expanded the distribution record of E. colomesus parasitizing C. asellus to southwestern Amazonia.
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Affiliation(s)
- Lucena Rocha Virgilio
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia (Bionorte), Universidade Federal do Acre (UFAC), Rio Branco, Acre, Brazil.,Laboratório de Ecologia Aquática, Universidade Federal do Acre (UFAC), Cruzeiro do Sul, Campus Floresta, Acre, Brazil
| | - Ewerton O Machado
- Laboratório de Ecologia Aquática, Universidade Federal do Acre (UFAC), Cruzeiro do Sul, Campus Floresta, Acre, Brazil
| | - Aerison Nogueira Freire
- Laboratório de Ecologia Aquática, Universidade Federal do Acre (UFAC), Cruzeiro do Sul, Campus Floresta, Acre, Brazil
| | - Ricardo Massato Takemoto
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Laboratório de Ictioparasitologia, Universidade Estadual de Maringá, Maringá, Paraná, Brazil
| | - Luís Marcelo Aranha Camargo
- Instituto Nacional de Epidemiologia da Amazônia Ocidental (CNPq/INCT), Porto Velho, Rondônia, Brazil.,Instituto de Ciências Biomédicas da Universidade de São Paulo (ICB5 USP), Monte Negro, Rondônia, Brazil
| | - Dionatas Ulises de Oliveira Meneguetti
- Programa de Pós-Graduação em Biodiversidade e Biotecnologia (Bionorte), Universidade Federal do Acre (UFAC), Rio Branco, Acre, Brazil.,Laboratório de Medicina Tropical, Universidade Federal do Acre, Rio Branco, Acre, Brazil
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9
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Jesus ACD, Madeira FP, Moraes MHDS, Morais AAD, Oliveira JD, Rosa JAD, Camargo LMA, Meneguetti DUDO, Berrnarde PS. Occurrence of triatomines (Hemiptera, Reduviidae) and their natural infection by Trypanosoma cruzi (Chagas, 1909) in Boca do Moa community, Cruzeiro do Sul, Acre, Brazil. Rev Soc Bras Med Trop 2021; 54:S0037-86822021000100628. [PMID: 33681926 PMCID: PMC8008858 DOI: 10.1590/0037-8682-0590-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Accepted: 09/25/2020] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION: Triatomines are insect vectors of Trypanosoma cruzi, the etiological agent of Chagas disease. METHODS: Triatomines were collected from households and by dissecting palm trees in the peri-urban areas of Cruzeiro do Sul (Acre); they were identified using a specific key and via genital analyses. Trypanosomatid infection was determined through microscopy and polymerase chain reaction. RESULTS: In total, 116 triatomines of the species Eratyrus mucronatus, Rhodnius pictipes, R. stali, and R. montenegrensis were collected, of which 13.8% were positive for T. cruzi. CONCLUSIONS: Four species of triatomines presented an infection rate above 13% in the Boca do Moa community.
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Affiliation(s)
- Adila Costa de Jesus
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Laboratório de Herpetologia, Cruzeiro do Sul, AC, Brasil
| | - Fernanda Portela Madeira
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Laboratório de Herpetologia, Cruzeiro do Sul, AC, Brasil
| | - Madson Huilber da Silva Moraes
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil
| | - Adson Araújo de Morais
- Hospital Sírio-Libanês, Sociedade Beneficente de Senhoras, Programa de Pós-Graduação Lato Sensu em Especialização em vigilância em Saúde, São Paulo, SP, Brasil
| | - Jader de Oliveira
- Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, SP, Brasil.,Universidade Estadual Paulista Júlio de Mesquita Filho, Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Araraquara, SP, Brasil
| | - João Aristeu da Rosa
- Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, SP, Brasil.,Universidade Estadual Paulista Júlio de Mesquita Filho, Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Araraquara, SP, Brasil
| | - Luís Marcelo Aranha Camargo
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade de São Paulo, Instituto de Ciências Biomédicas 5, Monte Negro, RO, Brasil.,Centro Universitário São Lucas/Afya, Departamento de Medicina, Porto Velho, RO, Brasil.,Centro de Pesquisa em Medicina Tropical de Rondônia, Porto Velho, RO, Brasil.,Instituto Nacional de Epidemiologia da Amazônia Ocidental, Porto Velho, RO, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Colégio de Aplicação, Rio Branco, AC, Brasil
| | - Paulo Sérgio Berrnarde
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Laboratório de Herpetologia, Cruzeiro do Sul, AC, Brasil
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10
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Virgilio LR, Oliveira MSB, Almeida LS, Takemoto RM, Camargo LMA, Meneguetti DUDO. Isopods Cymothoidae ectoparasites of fish from the Amazon. ACTA ACUST UNITED AC 2020; 29:e017920. [PMID: 33295379 DOI: 10.1590/s1984-29612020093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 09/09/2020] [Indexed: 11/22/2022]
Abstract
Most freshwater species of Cymothoidae are distributed in South America. They have mainly been recorded in the eastern and western regions of the Amazon River basin. However, in this ecosystem, the biodiversity of this group may be greater if the entire Amazon basin is considered. In this regard, the aim of the present study was to provide an updated list of isopod species of the family Cymothoidae that are found in fish in the Brazilian Amazon region and to report on new fish host occurrences and expanded geographical distributions for cymothoid isopods that parasitize fish in the southwestern Brazilian Amazon region. The parasites found in fish specimens were collected, fixed and identified later. We found eight species of Cymothoidae parasitizing different host fish species in the southwestern Amazon region. However, we found 14 species of Cymothoidae throughout the Brazilian Amazon region. Three additional species are thus reported here, which increases the number of species of Cymothoidae in this region to 17. These additional species are also new records for Brazil. Therefore, this study has contribute to expand the knowledge about the distribution and diversity of Cymothoidae in the Amazon basin.
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Affiliation(s)
- Lucena Rocha Virgilio
- Programa de Pós-graduação em Biodiversidade e Biotecnologia - Bionorte, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil.,Laboratório de Ecologia Aquática, Universidade Federal do Acre - UFAC, Campus Floresta, Cruzeiro do Sul, AC, Brasil
| | - Marcos Sidney Brito Oliveira
- Programa de Pós-graduação em Biodiversidade Tropical - PPGBio, Universidade Federal do Amapá - UNIFAP, Macapá, AP, Brasil
| | - Lorrana Santana Almeida
- Laboratório de Ecologia Aquática, Universidade Federal do Acre - UFAC, Campus Floresta, Cruzeiro do Sul, AC, Brasil
| | - Ricardo Massato Takemoto
- Núcleo de Pesquisas em Limnologia, Ictiologia e Aquicultura, Laboratório de Ictioparasitologia, Universidade Estadual de Maringá, Maringá, PR, Brasil
| | - Luís Marcelo Aranha Camargo
- Instituto de Ciências Biomédicas, Universidade de São Paulo - ICB5 USP, Monte Negro, RO, Brasil.,Laboratório de Medicina Tropical, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Programa de Pós-graduação em Biodiversidade e Biotecnologia - Bionorte, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil.,Laboratório de Medicina Tropical, Universidade Federal do Acre - UFAC, Rio Branco, AC, Brasil
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11
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Moraes MHDS, Jesus ACD, Madeira FP, Moresco GG, Oliveira JD, Rosa JAD, Camargo LMA, Bernarde PS, Meneguetti DUDO. Triatominae (Hemiptera, Reduviidae) in homes: Report of their occurrence in the municipality of Cruzeiro do Sul, Acre, South Western Amazon. Rev Soc Bras Med Trop 2020; 54:e20200296. [PMID: 33206885 PMCID: PMC7670736 DOI: 10.1590/0037-8682-0296-2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 06/29/2020] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Triatomines are hematophagous insects that are important to public health since they are the vectors of American Trypanosomiasis. The objective of this study was to describe the occurrence of triatomines in homes in Cruzeiro do Sul, Acre, Brazil. METHODS The specimens were collected by an active search inside homes and also by a passive search by the residents. RESULTS A total of 55 triatomines were captured comprising of 5 species each of the genera Rhodnius, Eratyrus, and Panstrongylus. No colonies were detected, ruling out the possibility of domiciliation. CONCLUSIONS Information on regional epidemiological dynamics contributes to the prevention and control of disease.
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Affiliation(s)
- Madson Huilber da Silva Moraes
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil
| | - Adila Costa de Jesus
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Centro Multidisciplinar, Cruzeiro do Sul, Campus Floresta, AC, Brasil
| | - Fernanda Portela Madeira
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Centro Multidisciplinar, Cruzeiro do Sul, Campus Floresta, AC, Brasil
| | - Gilberto Gilmar Moresco
- Ministério da Saúde, Departamento de Vigilância das Doenças Transmissíveis, Secretaria de Vigilância em Saúde, Brasília, DF, Brasil
| | - Jader de Oliveira
- Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil
| | | | - Luís Marcelo Aranha Camargo
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Instituto Nacional de Epidemiologia da Amazônia Ocidental, Porto Velho, RO, Brasil.,Centro de Pesquisa em Medicina Tropical de Rondônia, Porto Velho, RO, Brasil.,Centro Universitário São Lucas, Departamento de Medicina, Porto Velho, RO, Brasil.,Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro, RO, Brasil
| | - Paulo Sérgio Bernarde
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Centro Multidisciplinar, Cruzeiro do Sul, Campus Floresta, AC, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Colégio de Aplicação, Rio Branco, AC, Brasil
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12
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Moraes MHDS, Jesus ACD, Madeira FP, Moresco GG, Oliveira JD, Rosa JAD, Camargo LMA, Bernarde PS, Meneguetti DUDO. Trypanosoma cruzi vectors in a periurban area of the Western Brazilian Amazon. Rev Inst Med Trop Sao Paulo 2020; 62:e87. [PMID: 33206861 PMCID: PMC7669272 DOI: 10.1590/s1678-9946202062087] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 10/20/2020] [Indexed: 11/22/2022] Open
Abstract
The etiological agent of American trypanosomiasis is the protozoan Trypanosoma cruzi, typically transmitted by triatomines. The aim of this study was to investigate the triatomine fauna and trypanosomiasis infections in Acre State , Western Brazilian Amazon. Insect collection was performed by dissecting palm trees and installing traps. We found that T. cruzi infection rate was 24.5% and Rhodnius pictipes (57.1%) was the most abundant triatomine species. Health education as well as epidemiological and entomological surveillance are necessary to diagnose and prevent new cases of Chagas disease in the region.
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Affiliation(s)
- Madson Huilber da Silva Moraes
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, Acre, Brazil
| | - Adila Costa de Jesus
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, Acre, Brazil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Cruzeiro do Sul, Acre, Brazil
| | - Fernanda Portela Madeira
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, Acre, Brazil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Cruzeiro do Sul, Acre, Brazil
| | - Gilberto Gilmar Moresco
- Ministério da Saúde, Secretaria de Vigilância em Saúde, Departamento de Vigilância das Doenças Transmissíveis, Brasília, Distrito Federal, Brazil
| | - Jader de Oliveira
- Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, São Paulo, Brazil.,Universidade Estadual Paulista Júlio de Mesquita Filho, Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Araraquara, São Paulo, Brazil
| | - João Aristeu da Rosa
- Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, São Paulo, Brazil.,Universidade Estadual Paulista Júlio de Mesquita Filho, Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Araraquara, São Paulo, Brazil
| | - Luís Marcelo Aranha Camargo
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, Acre, Brazil.,Universidade de São Paulo, Instituto de Ciências Biomédicas 5, Monte Negro, Rondônia, Brazil.,Centro Universitário São Lucas/Afya, Departamento de Medicina, Porto Velho, Rondônia, Brazil.,Centro de Pesquisa em Medicina Tropical de Rondônia, Porto Velho, Rondônia, Brazil.,Instituto Nacional de Epidemiologia da Amazônia Ocidental, Porto Velho, Rondônia, Brazil
| | - Paulo Sérgio Bernarde
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, Acre, Brazil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Cruzeiro do Sul, Acre, Brazil
| | - Dionatas Ulises de Oliveira Meneguetti
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, Acre, Brazil.,Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciência, Inovação e Tecnologia para Amazônia, Rio Branco, Acre, Brazil.,Universidade Federal do Acre, Colégio de Aplicação, Rio Branco, Acre, Brazil
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13
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de Andrade TS, de Almeida AMZ, Basano SDA, Takagi EH, Szeszs MW, Melhem MSC, Albuquerque M, Camargo JDSAA, Gambale W, Camargo LMA. Chromoblastomycosis in the Amazon region, Brazil, caused by Fonsecaea pedrosoi, Fonsecaea nubica, and Rhinocladiella similis: Clinicopathology, susceptibility, and molecular identification. Med Mycol 2020; 58:172-180. [PMID: 31329924 DOI: 10.1093/mmy/myz034] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2018] [Revised: 02/28/2019] [Accepted: 04/10/2019] [Indexed: 02/02/2023] Open
Abstract
Chromoblastomycosis is a chronic subcutaneous disease caused by human contact with melanized fungi occurring mainly in tropical and subtropical zones worldwide. This study assessed 12 patients with chromoblastomycosis from Rondônia, Brazil, Amazon region. In sum, 83.3% were men, 41.6% were from Monte Negro city, median age was 52.9 years, and median time to disease progression was 12.2 years. Lesions were located on the lower limbs (75%), and verruciform was prevalent form (66.6%). After 3 years of treatment with itraconazole, two patients were considered cured. The etiological agents were identified by the molecular sequence of the ribosomal internal transcribed spacer ITS1, 5.8S, and ITS2 region and β-tubulin genes. Eight strains were identified as Fonsecaea pedrosoi, two were F. nubica, and two were Rhinocladiella similis. The antifungal activity of five drugs was evaluated, and the most active drug was terbinafine (range minimal inhibitory concentration [MIC] 0.015-0.12 μg/ml), itraconazole (range MIC 0.03-0.5 μg/ml) and voriconazole (range MIC 0.06-0.5 μg/ml). The highest MIC was 5-fluorocytosine (range MIC 2-32 μg/ml), and amphotericin B (range MIC 0.25-2 μg/ml). In conclusion, the present study expanded the epidemiological disease database and described for the first time F. nubica and R. similis as chromoblastomycosis agents in the Brazilian Amazon region. Our results confirmed the importance of using molecular methods to identify the melanized fungi and stimulate the recognition of the disease in other places where no cases have been reported.
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Affiliation(s)
- Tânia Sueli de Andrade
- Department of Culture Collection, Adolfo Lutz Institute, Secretary of Health, São Paulo, Brazil
| | | | - Sergio de Almeida Basano
- Department of Medicine, Faculty of São Lucas, Rondônia, Brazil.,Centre of Tropical Medicine of Rondônia, Brazil
| | | | | | - Marcia S C Melhem
- Mycology Unit, Adolfo Lutz Institute, Secretary of Health, São Paulo, Brazil
| | | | | | | | - Luís Marcelo Aranha Camargo
- Department of Medicine, Faculty of São Lucas, Rondônia, Brazil.,Institute of Biomedical Sciences 5, University of São Paulo, Monte Negro, Rondônia, Brazil.,Centre of Tropical Medicine Research, Secretary of Health of the State of Rondônia.,National Institute of Science and Research -Epidemiology of Amazônia, Brazilian Government
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14
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Lesimann W, Queiroz T, Camargo LMA. Child injured by suspected catfish (Cetopsis sp.) bite in river, Humaitá, Amazonas, Brazil. Rev Soc Bras Med Trop 2020; 53:e20190458. [PMID: 32321093 PMCID: PMC7182286 DOI: 10.1590/0037-8682-0458-2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 01/24/2020] [Indexed: 11/24/2022] Open
Abstract
We present the first recent reported case of traumatic injury caused by catfish
in the Americas. Although 66.2% of fish-related injuries occur in the Amazon
Region, they are scarcely reported. We report a traumatic injury in a 2-year-old
boy who entered Madeira River. The use of traditional methods to treat the
injury and his incomplete vaccination history reflect the weakness of the health
system. Further, the fact that it was the second time that such an incident had
occurred in the locality in 3 weeks during the dry season suggests that this
could be a frequent occurrence during this period.
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Affiliation(s)
| | - Tasso Queiroz
- Centro Universitário São Lucas, Porto Velho, RO, Brasil
| | - Luís Marcelo Aranha Camargo
- Centro Universitário São Lucas, Porto Velho, RO, Brasil.,Centro de Pesquisa em Medicina Tropical, CEPEM/SESAU, Porto Velho, RO, Brasil.,Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro, RO, Brasil.,Conselho Nacional de Desenvolvimento Científico e Tecnológico, Instituto de Ciência e Tecnologia/CNPq EpiAmo, Porto Velho, RO, Brasil
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15
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Madeira FP, Menezes ALR, Jesus ACD, Moraes MHDS, Oliveira JD, Rosa JAD, Camargo LMA, Meneguetti DUDO, Berrnarde PS. First report of Rhodnius montenegrensis (Hemiptera, Reduviidae, Triatominae) in Amazonas, Brazil. Rev Soc Bras Med Trop 2020; 53:e20190436. [PMID: 32187341 PMCID: PMC7094056 DOI: 10.1590/0037-8682-0436-2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2019] [Accepted: 12/12/2019] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION: Triatomines are hematophagous insects of epidemiological importance because
they are vectors of Chagas disease. We present here the first report of
Rhodnius montenegrensis in Amazonas, Brazil. METHODS: Triatomines were collected from Attalea butyracea palm
trees in the municipality of Guajará. RESULTS: Two adult female R. montenegrensis specimens were
identified. CONCLUSIONS: The present study confirms that the number of triatomine species within the
Amazon has increased from 10 to 11, and the number of Brazilian states with
R. montenegrensis has increased from two to
three.
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Affiliation(s)
- Fernanda Portela Madeira
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Laboratório de Herpetologia, Cruzeiro do Sul, AC, Brasil
| | | | - Adila Costa de Jesus
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Laboratório de Herpetologia, Cruzeiro do Sul, AC, Brasil
| | - Madson Huilber da Silva Moraes
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil
| | - Jader de Oliveira
- Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, SP, Brasil.,Universidade Estadual Paulista Júlio de Mesquita Filho, Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Araraquara, SP, Brasil
| | - João Aristeu da Rosa
- Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, SP, Brasil.,Universidade Estadual Paulista Júlio de Mesquita Filho, Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Araraquara, SP, Brasil
| | - Luís Marcelo Aranha Camargo
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade de São Paulo, Instituto de Ciências Biomédicas 5, Monte Negro, RO, Brasil.,Centro Universitário São Lucas, Departamento de Medicina, Porto Velho, RO, Brasil.,Centro de Pesquisa em Medicina Tropical de Rondônia, Porto Velho, RO, Brasil.,Instituto Nacional de Epidemiologia da Amazônia Ocidental, Porto Velho, RO, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Colégio de Aplicação, Rio Branco, AC, Brasil
| | - Paulo Sérgio Berrnarde
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil.,Universidade Federal do Acre, Campus Floresta, Centro Multidisciplinar, Laboratório de Herpetologia, Cruzeiro do Sul, AC, Brasil
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Bilheiro AB, da Rosa JA, de Oliveira J, Belintani T, Fontes G, Medeiros JF, Júnior AMP, Meneguetti DUDO, Camargo LMA. Biological Aspects of Rhodnius montenegrensis (Hemiptera, Reduviidae, Triatominae) Under Laboratory Conditions. Vector Borne Zoonotic Dis 2019; 19:929-932. [PMID: 31355715 DOI: 10.1089/vbz.2019.2449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Triatominae are insects notorious as vectors of Trypanosoma cruzi, which is the etiologic agent of Chagas disease, and other trypanosomatids. Triatomines of the genus Rhodnius are primarily sylvatic, nevertheless the occurrence of native species that invade households suggests their possible role in the transmission of Chagas disease. Rhodnius montenegrensis was first described in 2012, but the biological aspects of this species are still unknown. This study aimed to analyze the biological aspects of R. montenegrensis under laboratory conditions. The emergence rate was 63.0%, the mean time required for the emergence was 13.9 ± 1.7 days, the biological cycle from egg to adult phase occurred in 105.2 ± 9.2 days, the number of bloodmeals required for each nymphal stage to reach the next stage varies between a minimum of two and a maximum of seven. The weight gained after a bloodmeal varied between 10.6 times on 1st-instar nymphs and 3.9 times on 5th-instar nymphs. The adult specimens had the lowest gain of weight, reaching 2.2 times on females and 1.6 times on males. The sex ratio observed was 1:1. These data are relevant to understand the life cycle of this new described species and to elaborate more effective vector control strategies.
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Affiliation(s)
- Adriana Benatti Bilheiro
- Campus Centro-Oeste, Universidade Federal de São João del Rei (UFSJ), Divinópolis, Minas Gerais, Brazil
| | - João Aristeu da Rosa
- Instituto de Ciências Farmacêuticas, Universidade Estadual Paulista (Unesp), Araraquara, São Paulo, Brazil
| | - Jader de Oliveira
- Instituto de Ciências Farmacêuticas, Universidade Estadual Paulista (Unesp), Araraquara, São Paulo, Brazil
| | - Tiago Belintani
- Instituto de Biologia, Universidade Estadual de Campinas (Unicamp), Campinas, São Paulo, Brazil
| | - Gilberto Fontes
- Campus Centro-Oeste, Universidade Federal de São João del Rei (UFSJ), Divinópolis, Minas Gerais, Brazil.,Instituto Nacional de Epidemiologia da Amazônia Ocidental (INCT-EPIAMO), Porto Velho, Rondônia, Brazil
| | - Jansen Fernandes Medeiros
- Instituto Nacional de Epidemiologia da Amazônia Ocidental (INCT-EPIAMO), Porto Velho, Rondônia, Brazil.,Fundação Oswaldo Cruz (Fiocruz), Rondônia, Porto Velho, Rondônia, Brazil
| | | | | | - Luís Marcelo Aranha Camargo
- Instituto Nacional de Epidemiologia da Amazônia Ocidental (INCT-EPIAMO), Porto Velho, Rondônia, Brazil.,Instituto de Ciências Biomédicas 5, Universidade de São Paulo (ICB-5, USP), Monte Negro, Rondônia, Brazil.,Centro de Pesquisa em Medicina Tropical de Rondônia (CEPEM)/Secretaria de Estado da Saúde de Rondônia, Porto Velho, Rondônia, Brazil.,Departamento de Medicina, Centro Universitário São Lucas, Porto Velho, Rondônia, Brazil
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17
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Oliveira ASD, Ribeiro MAL, Castro GVDS, Brilhante NA, Camargo LMA, Meneguetti DUDO. Confirmation of the occurrence of Panstrongylus rufotuberculatus (Champion, 1899) in the state of Acre, Western Amazon. Rev Soc Bras Med Trop 2019; 52:e20180388. [PMID: 30994806 DOI: 10.1590/0037-8682-0388-2018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Accepted: 11/29/2018] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION This study aimed to confirm the occurrence of Panstrongylus rufotuberculatus in the state of Acre, Brazil. METHODS The four specimens of P. rufotuberculatus were obtained from the entomological collection of the Zoobotanical Park of the Federal University of Acre (UFAC). RESULTS Confirmation of the occurrence of this species in the state of Acre increases the number of species already registered, from nine to ten. CONCLUSIONS The necessity to develop further studies was verified, especially with the domiciliary process of P. rufotuberculatus, resulting in tracing prophylactic measures against the vector transmission of Trypanosoma cruzi.
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Affiliation(s)
- Ailse Silva de Oliveira
- Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Mariane Albuquerque Lima Ribeiro
- Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Gabriela Vieira de Souza Castro
- Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | | | - Luís Marcelo Aranha Camargo
- Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Instituto de Ciências Biomédicas-5, Universidade de São Paulo, Monte Negro, RO, Brasil.,Departamento de Medicina, Faculdade São Lucas, Porto Velho, Rondônia, Brasil.,Centro de Pesquisas em Medicina Tropical, Porto Velho, RO, Brasil.,Instituto Nacional de Ciência e Tecnologia EpiAmo/Rondônia, Porto Velho, RO, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência, Inovação e Tecnologia para a Amazônia, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Colégio de Aplicação, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação em Biodiversidade e Biotecnologia, Rio Branco, AC, Brasil
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18
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Bilheiro AB, Camargo JDSAA, Zamarchi TBDO, Tonholo C, Bassin HCM, Sussuarana ITDA, Henriques AL, Camargo LMA. Survey of Trypanosoma (Kinetoplastida: Trypanosomatidae) Infection in Monte Negro Municipality, State of Rondônia, Western Amazon, with First Record of T. evansi in the state. Rev Soc Bras Med Trop 2019; 52:e20190270. [DOI: 10.1590/0037-8682-0270-2019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 08/02/2019] [Indexed: 12/26/2022] Open
Affiliation(s)
| | | | | | | | | | | | | | - Luís Marcelo Aranha Camargo
- Universidade de São Paulo, Brazil; Secretaria de Estado da Saúde de Rondônia, Brasil; Centro Universitário São Lucas, Brasil; Instituto Nacional de Epidemiologia da Amazônia Ocidental, Brasil
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Bilheiro AB, da Rosa JA, de Oliveira J, Belintani T, Fontes G, Medeiros JF, Meneguetti DUDO, Camargo LMA. First Report of Natural Infection with Trypanosoma cruzi in Rhodnius montenegrensis (Hemiptera, Reduviidae, Triatominae) in Western Amazon, Brazil. Vector Borne Zoonotic Dis 2018; 18:605-610. [PMID: 30016209 DOI: 10.1089/vbz.2018.2266] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Rhodnius montenegrensis was described in 2012. Since then, reports of the occurrence of this species associated with palm trees near households in Rondônia have been published. This study aimed to analyze the natural infection of R. montenegrensis with trypanosomatids in the municipality of Monte Negro, Rondônia, Brazilian western Amazon. Capture of triatomines occurred in Attalea speciosa (babassu) specimens around households. Twelve of the 72 captured triatomines were identified by morphological and morphometric characters, by molecular analysis made using the PCR, DNA sequencing, and phylogenetic analyses. The intestinal content was collected from 60 of these 72 specimens. The positivity for trypanosomatids was confirmed by examining the intestinal content followed by PCR amplification of the cathepsin L-like gene specific for Trypanosoma cruzi (PCR-DTcrCatL) and Trypanosoma rangeli (PCR-DTraCatL). Of the 60 specimens analyzed by microscopy, 22 (36.7%) were positive for trypanosomatids in the intestinal content analysis. Of these 22 specimens of R. montenegrensis, 16 (72.7%) were infected with T. cruzi, 2 (9.1%) were infected with T. rangeli, 2 (9.1%) had mixed infection with T. cruzi and T. rangeli, and 2 were negative (9.1%). These data suggest the need for attention of the health surveillance system of Chagas disease in the State of Rondônia, as this study points out to another potential vector of the disease.
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Affiliation(s)
| | - João Aristeu da Rosa
- 2 Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita (UNESP) , Araraquara, Brazil
| | - Jader de Oliveira
- 2 Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita (UNESP) , Araraquara, Brazil
| | - Tiago Belintani
- 2 Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita (UNESP) , Araraquara, Brazil
| | - Gilberto Fontes
- 1 Universidade Federal de São João del Rei (UFSJ) , Campus Centro Oeste, Divinópolis, Brazil .,3 Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO , Porto Velho, Brazil
| | - Jansen Fernandes Medeiros
- 3 Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO , Porto Velho, Brazil .,4 Fundação Oswaldo Cruz/Fiocruz Rondônia , Porto Velho, Brazil
| | | | - Luís Marcelo Aranha Camargo
- 3 Instituto Nacional de Epidemiologia da Amazônia Ocidental INCT-EPIAMO , Porto Velho, Brazil .,4 Fundação Oswaldo Cruz/Fiocruz Rondônia , Porto Velho, Brazil .,5 Universidade Federal do Acre , Rio Branco, Colégio de Aplicação, Rio Branco, Brazil .,6 Instituto de Ciências Biomédicas V , Universidade de São Paulo (ICB-5, USP), Monte Negro, Brazil .,7 Centro de Pesquisa em Medicina Tropical de Rondônia (CEPEM)/Secretaria de Estado da Saúde de Rondônia , Porto Velho, Brazil .,8 Departamento de Medicina, Centro Universitário São Lucas , Porto Velho, Brazil
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de Almeida Basano S, de Souza Almeida Aranha Camargo J, Fontes G, Pereira AR, Medeiros JF, de Oliveira Laudisse MC, de Godoi Mattos Ferreira R, Camargo LMA. Phase III Clinical Trial to Evaluate Ivermectin in the Reduction of Mansonella ozzardi infection in the Brazilian Amazon. Am J Trop Med Hyg 2018; 98:786-790. [PMID: 29313486 DOI: 10.4269/ajtmh.17-0698] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
The treatment of mansonelliasis is still a challenge because there are few clinical trials for the treatment of the disease. This double-blind, randomized, placebo-controlled study (phase III clinical trial) was conducted to evaluate the effectiveness of a single oral dose of ivermectin (0.15 mg/kg) in the reduction of the Mansonella ozzardi microfilaraemia and the occurrence of adverse effects in infected people compared with the control group treated with placebo. A total of 49 microfilaraemic patients were randomly selected from the municipality of Lábrea, State of Amazonas, in the Brazilian Amazon. Among them, 40 patients have concluded the study, 19 treated with ivermectin and 21 treated with placebo. In the first and third days after the treatment, all the patients were clinically evaluated, and the diagnostic and quantification of blood microfilariae through blood filtration in polycarbonate membranes was performed. A significant reduction of the microfilaraemia (99.9%) was observed in the patients who received ivermectin. Slight changes in laboratory test results, without clinical importance, were seen in treated and control groups. Our results suggest that ivermectin is effective and safe for the treatment of infections caused by M. ozzardi.
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Affiliation(s)
- Sergio de Almeida Basano
- Universidade Federal de São João Del Rei, Campus Centro Oeste, Divinópolis, Brazil.,Departamento de Medicina, Centro Universitário São Lucas, Porto Velho, Brazil.,Secretaria de Saúde do Estado de Rondônia, Porto Velho, Brazil
| | | | - Gilberto Fontes
- Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, Brazil.,Universidade Federal de São João Del Rei, Campus Centro Oeste, Divinópolis, Brazil
| | | | - Jansen Fernandes Medeiros
- Fiocruz-Rondônia, Fundação Oswaldo Cruz, Porto Velho, Brazil.,Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, Brazil
| | | | - Ricardo de Godoi Mattos Ferreira
- Fiocruz-Rondônia, Fundação Oswaldo Cruz, Porto Velho, Brazil.,Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, Brazil
| | - Luís Marcelo Aranha Camargo
- Centro de Pesquisas em Medicina Tropical de Rondônia/SESAU, Porto Velho, Brazil.,Instituto de Ciências Biomédicas 5 (ICB5 USP), Universidade de São Paulo, Monte Negro, Brazil.,Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, Brazil.,Departamento de Medicina, Centro Universitário São Lucas, Porto Velho, Brazil
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Terassini FA, Stefanello C, Camargo LMA, Meneguetti DUDO. First report of Panstrongylus lignarius , Walker, 1873 (Hemiptera, Reduviidae, Triatominae), in the State of Rondônia, Brazil. Rev Soc Bras Med Trop 2017; 50:547-549. [PMID: 28954079 DOI: 10.1590/0037-8682-0048-2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 06/05/2017] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION: This study reports, for the first time, the presence of Panstrongylus lignarius in the State of Rondonia, Brazil. METHODS: Specimen of P. lignarius was collected from a flat in an urban area of the municipality of Porto Velho, Western Amazon. RESULTS: With this finding of P. lignarius, the number of Triatominae species in the State of Rondonia has increased from six to seven. CONCLUSIONS: The occurrence of P. lignarius is worrisome, because this species has been found to be naturally infected with Trypanosoma cruzi and there has been evidence of its domiciliation capabilities in other countries of South America.
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Affiliation(s)
- Flávio Aparecido Terassini
- Departamento de Biologia e Medicina, Centro Universitário São Lucas, Porto Velho, RO, Brasil.,Instituto de Ciências Biomédicas-5, Universidade de São Paulo, Monte Negro, RO, Brasil
| | - Carlise Stefanello
- Departamento de Biologia e Medicina, Centro Universitário São Lucas, Porto Velho, RO, Brasil
| | - Luís Marcelo Aranha Camargo
- Departamento de Biologia e Medicina, Centro Universitário São Lucas, Porto Velho, RO, Brasil.,Instituto de Ciências Biomédicas-5, Universidade de São Paulo, Monte Negro, RO, Brasil.,Programa de Pós Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Centro de Pesquisa em Medicina Tropical, Secretaria de Saúde do Estado de Rondônia, Porto Velho, RO, Brasil
| | - Dionatas Ulises de Oliveira Meneguetti
- Programa de Pós Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós Graduação Stricto Sensu em Ciência, Inovação e Tecnologia para a Amazônia, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Colégio de Aplicação, Universidade Federal do Acre, Rio Branco, AC, Brasil
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Teles CBG, Santos APDAD, Freitas RA, Oliveira AFJD, Ogawa GM, Rodrigues MS, Pessoa FAC, Medeiros JF, Camargo LMA. Phlebotomine sandfly (Diptera: Psychodidae) diversity and their Leishmania DNA in a hot spot of American Cutaneous Leishmaniasis human cases along the Brazilian border with Peru and Bolivia. Mem Inst Oswaldo Cruz 2017; 0:0. [PMID: 27304023 PMCID: PMC4957494 DOI: 10.1590/0074-02760160054] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2016] [Accepted: 05/24/2016] [Indexed: 11/21/2022] Open
Abstract
In this study, we identified the phlebotomine sandfly vectors involved in the transmission of American Cutaneous Leishmaniasis (ACL) in Assis Brasil, Acre, Brazil, which is located on the Brazil-Peru-Bolivia frontier. The genotyping of Leishmania in phlebotomines was performed using polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism. A total of 6,850 sandflies comprising 67 species were captured by using CDC light traps in rural areas of the municipality. Three sandfly species were found in the state of Acre for the first time: Lutzomyia georgii, Lu. complexa and Lu. evangelistai. The predominant species was Lu. auraensis/Lu. ruifreitasi and Lu. davisi (total 59.27%). 32 of 368 pools were positive for the presence of Leishmania DNA (16 pools corresponding to Lu. davisi, and 16 corresponding to Lu. auraensis/Lu. ruifreitasi), with a minimal infection prevalence of 1.85% in Lu. davisi and 2.05% in Lu. auraensis/Lu. ruifreitasi. The Leishmania species found showed maximum identity with L. (Viannia) guyanensis and L. (V.) braziliensis in both phlebotomine species. Based on these results and similar scenarios previously described along the Brazil/Peru/Bolivia tri-border, the studied area must take into consideration the possibility of Lu. davisi and Lu. auraensis/Lu. ruifreitasi as probable vectors of ACL in this municipality.
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Affiliation(s)
- Carolina Bioni Garcia Teles
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Porto Velho RO , Brasil, Fundação Oswaldo Cruz, Porto Velho, RO, Brasil.,Faculdade São Lucas, Faculdade São Lucas, Porto Velho RO , Brasil, Faculdade São Lucas, Porto Velho, RO, Brasil
| | - Ana Paula de Azevedo Dos Santos
- Universidade Federal de Rondônia, Universidade Federal de Rondônia, Porto Velho RO , Brasil, Universidade Federal de Rondônia, Porto Velho, RO, Brasil
| | - Rui Alves Freitas
- Instituto Nacional de Pesquisas da Amazônia, Instituto Nacional de Pesquisas da Amazônia, Manaus AM , Brasil, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil
| | - Arley Faria José de Oliveira
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Instituto Leônidas e Maria Deane, Manaus AM , Brasil, Fundação Oswaldo Cruz, Instituto Leônidas e Maria Deane, Manaus, AM, Brasil
| | - Guilherme Maerschner Ogawa
- Universidade de São Paulo, Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro RO , Brasil, Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro, RO, Brasil
| | - Moreno Souza Rodrigues
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Porto Velho RO , Brasil, Fundação Oswaldo Cruz, Porto Velho, RO, Brasil
| | - Felipe Arley Costa Pessoa
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Instituto Leônidas e Maria Deane, Manaus AM , Brasil, Fundação Oswaldo Cruz, Instituto Leônidas e Maria Deane, Manaus, AM, Brasil
| | - Jansen Fernandes Medeiros
- Fundação Oswaldo Cruz, Fundação Oswaldo Cruz, Porto Velho RO , Brasil, Fundação Oswaldo Cruz, Porto Velho, RO, Brasil
| | - Luís Marcelo Aranha Camargo
- Faculdade São Lucas, Faculdade São Lucas, Porto Velho RO , Brasil, Faculdade São Lucas, Porto Velho, RO, Brasil.,Universidade de São Paulo, Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro RO , Brasil, Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro, RO, Brasil
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Teles CBG, Pessoa FAC, Medeiros JF, Camargo LMA. Trichophoromyia auraensis is a putative vector. Mem Inst Oswaldo Cruz 2017; 112:517-519. [PMID: 28591315 PMCID: PMC5452491 DOI: 10.1590/0074-02760170024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 02/10/2017] [Indexed: 11/30/2022] Open
Abstract
The sandfly Trichophoromyia auraensis has recently evolved as a proven vector of Leishmania (Viannia) endemic to state of Acre in the north of Brazil. This note is intended to propose a correction in the report of the first occurrence of natural infection of Leishmania (Viannia) in this species. We and the other scientific groups reinforced that Tr. auraensis is a possible vector involved in the transmission of American cutaneous leishmaniasis in Acre, Brazil.
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Affiliation(s)
- Carolina Bioni Garcia Teles
- Fundação Oswaldo Cruz-Fiocruz, Porto Velho, RO, Brasil.,Universidade Federal de Rondônia, Porto Velho, RO, Brasil.,Faculdade São Lucas, Porto Velho, RO, Brasil.,Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brasil
| | | | - Jansen Fernandes Medeiros
- Fundação Oswaldo Cruz-Fiocruz, Porto Velho, RO, Brasil.,Universidade Federal de Rondônia, Porto Velho, RO, Brasil.,Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brasil
| | - Luís Marcelo Aranha Camargo
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Monte Negro, RO, Brasil.,Faculdade São Lucas, Porto Velho, RO, Brasil.,Instituto Nacional de Epidemiologia na Amazônia Ocidental, Porto Velho, RO, Brasil
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Rachid Viana GM, Akinyi Okoth S, Silva-Flannery L, Lima Barbosa DR, Macedo de Oliveira A, Goldman IF, Morton LC, Huber C, Anez A, Dantas Machado RL, Aranha Camargo LM, Costa Negreiros do Valle S, Marins Póvoa M, Udhayakumar V, Barnwell JW. Histidine-rich protein 2 (pfhrp2) and pfhrp3 gene deletions in Plasmodium falciparum isolates from select sites in Brazil and Bolivia. PLoS One 2017; 12:e0171150. [PMID: 28301474 PMCID: PMC5354239 DOI: 10.1371/journal.pone.0171150] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 01/16/2017] [Indexed: 11/18/2022] Open
Abstract
More than 80% of available malaria rapid diagnostic tests (RDTs) are based on the detection of histidine-rich protein-2 (PfHRP2) for diagnosis of Plasmodium falciparum malaria. Recent studies have shown the genes that code for this protein and its paralog, histidine-rich protein-3 (PfHRP3), are absent in parasites from the Peruvian Amazon Basin. Lack of PfHRP2 protein through deletion of the pfhrp2 gene leads to false-negative RDT results for P. falciparum. We have evaluated the extent of pfhrp2 and pfhrp3 gene deletions in a convenience sample of 198 isolates from six sites in three states across the Brazilian Amazon Basin (Acre, Rondonia and Para) and 25 isolates from two sites in Bolivia collected at different times between 2010 and 2012. Pfhrp2 and pfhrp3 gene and their flanking genes on chromosomes 7 and 13, respectively, were amplified from 198 blood specimens collected in Brazil. In Brazil, the isolates collected in Acre state, located in the western part of the Brazilian Amazon, had the highest percentage of deletions for pfhrp2 25 (31.2%) of 79, while among those collected in Rondonia, the prevalence of pfhrp2 gene deletion was only 3.3% (2 out of 60 patients). In isolates from Para state, all parasites were pfhrp2-positive. In contrast, we detected high proportions of isolates from all 3 states that were pfhrp3-negative ranging from 18.3% (11 out of 60 samples) to 50.9% (30 out of 59 samples). In Bolivia, only one of 25 samples (4%) tested had deleted pfhrp2 gene, while 68% (17 out of 25 samples) were pfhrp3-negative. Among the isolates tested, P. falciparum pfhrp2 gene deletions were present mainly in those from Acre State in the Brazilian Amazon. These results indicate it is important to reconsider the use of PfHRP2-based RDTs in the western region of the Brazilian Amazon and to implement appropriate surveillance systems to monitor pfhrp2 gene deletions in this and other parts of the Amazon region.
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Affiliation(s)
| | - Sheila Akinyi Okoth
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- Atlanta Research and Education Foundation, Decatur, Georgia, United States of America
| | - Luciana Silva-Flannery
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- Atlanta Research and Education Foundation, Decatur, Georgia, United States of America
| | | | - Alexandre Macedo de Oliveira
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Ira F. Goldman
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Lindsay C. Morton
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Curtis Huber
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
| | - Arletta Anez
- Pan American Health Organization, La Paz, Bolivia
| | | | | | | | | | - Venkatachalam Udhayakumar
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
- * E-mail:
| | - John W. Barnwell
- Malaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, United States of America
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Vieira GDD, Basano SDA, Camargo LMA. Transition of the morbidity and mortality profile in a municipality in the interior of the Brazilian Amazon. Rev Soc Bras Med Trop 2017; 49:411-7. [PMID: 27598626 DOI: 10.1590/0037-8682-0075-2016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 07/12/2016] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION The morbidity and mortality profile in a given region reflects its quality of life and provides tools for improving public health policies in that region. METHODS A cross-sectional epidemiological study was performed using secondary mortality data collected from the Monte Negro municipality of the Brazilian Western Amazon from 2000 to 2011. These data were compared with data from similar municipalities in other Brazilian macro-regions. Data were obtained through the Departamento de Informática do Sistema Único de Saúde (DATASUS) information system. RESULTS The number of deaths reported over the study period was 606. The most common cause of death was external causes of morbidity and mortality [International Classification of Diseases (ICD)-10 chapter 20], followed by diseases of the circulatory system (ICD-10 chapter 9). Among the causes of death according to age group, infectious and parasitic diseases were the most common for 2- to 9-year-old children; external causes of disease were the most prevalent for 10- to 59-year-old people; and circulatory diseases prevailed in individuals over 60 years of age. Eleven percent of deaths were due to unknown causes. CONCLUSIONS These results point to a fragility in the public policies for prevention and awareness of this problem. Infectious and parasitic diseases contribute only 4.5% of deaths, but had the third highest Disability-Adjusted Life Year score (1,190 days). Improving support to the Estratégia Saúde da Família (Family Health Strategy) program and implementing a death verification service would significantly aid in reducing the occurrence of non-transmissible chronic diseases and clarifying unknown causes of death.
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Affiliation(s)
| | - Sergio de Almeida Basano
- Departamento de Medicina, Faculdade São Lucas, Porto Velho, Rondônia, Brazil.,Núcleo de Medicina Tropical, Centro de Medicina Tropical de Rondônia, Porto Velho, Rondônia, Brazil
| | - Luís Marcelo Aranha Camargo
- Departamento de Medicina, Faculdade São Lucas, Porto Velho, Rondônia, Brazil.,Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, Monte Negro, Rondônia, Brazil.,Centro de Pesquisa em Medicina Tropical, Porto Velho, Rondônia, Brazil
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Basano SDA, Tarso P, Soares HS, Costa AP, Marcili A, Labruna MB, Dias RA, Camargo LMA, Gennari SM. Toxoplasma gondii, Neospora caninum and Leishmania amazonensis antibodies in domestic dogs in the western Brazilian Amazon region. Braz J Vet Res Anim Sci 2016. [DOI: 10.11606/issn.1678-4456.bjvras.2016.103903] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Amostras de sangue de 99 cães domiciliados foram coletadas no meio urbano (n = 33) e rural (n = 66) do município de Lábrea, estado do Amazonas, Brasil. Dentre as amostras rurais, 40 foram obtidas em comunidades ribeirinhas e 26 em comunidades indígenas, ambas ao longo do rio Purus. Durante a amostragem foi aplicado um questionário com informações sobre sexo, idade, viver em áreas secas ou alagadiças, acesso ou não às ruas (cães urbanos) e acesso à floresta. A presença de anticorpos contra Toxoplasma gondii, Neospora caninum, Leishmania infantum chagasi e Leishmania amazonensis foi detectada pela reação de imunofluorescência indireta (RIFI) com ponto de corte de, respectivamente, 16, 50, 40 e 40. Associação entre as variáveis qualitativas e a positividade para cada um dos parasitos foi avaliada pelo teste do χ2 (p < 0,05). A ocorrência de animais com anticorpos contra T. gondii, N. caninum e L. amazonensis foi de, respectivamente, 61,6%; 7,1% e 8,1%. Nenhuma amostra foi positiva para L. infantum chagasi. A variável viver em área urbana (p=0,041) apresentou associação com ocorrência de T. gondii e o número de cães positivos a T. gondii aumentou com a idade (p = 0,0006). A variável sexo (machos) apresentou associação com N. caninum (p = 0,018) e nenhuma variável apresentou associação com L. amazonensis. Os títulos de anticorpos contra T. gondii variaram de 64 a 32.768; contra N. caninum de 100 a 800 e contra L. amazonensis de 40 a 640. T. gondii e L. amazonensis são dois agentes de importantes zoonoses e encontram-se ativos na região. O município estudado, especialmente as comunidades ribeirinhas, possuem peculiaridades geográficas, sociais e ecológicas distintas e necessitam maior atenção das autoridades para o controle desses agentes.
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Basano SDA, Medeiros JF, Fontes G, Vieira GDD, Camargo JSDAA, Vera LJS, Ferreira RDGM, Camargo LMA. Occurrence of Mansonella ozzardi diagnosed using a polycarbonate membrane in a riverside population of Lábrea in the Western Brazilian Amazon. Rev Soc Bras Med Trop 2016; 49:115-8. [DOI: 10.1590/0037-8682-0142-2015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Accepted: 07/07/2015] [Indexed: 11/21/2022] Open
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Campos DCCD, Dutra APB, Suares VL, Carvalho PACD, Camargo LMA. New strategies for active finding of leprosy cases in the Amazonian region. Rev Soc Bras Med Trop 2016; 48:488-90. [PMID: 26312941 DOI: 10.1590/0037-8682-0015-2015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Accepted: 04/15/2015] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION The use of the Self-Image Form (SIF) expands the identification of active leprosy cases to neighbors of index cases. METHODS The SIF was used to screen two groups: case (neighbors of index cases of leprosy) and control (individuals residing next to houses without leprosy) group. A specialist investigated suspected leprosy cases for disease confirmation. RESULTS New cases of leprosy were diagnosed in the case group (n = 7, 8.6%), but not the control group. CONCLUSIONS The new surveillance strategy is inexpensive, efficient, and feasible within a primary health strategy. Future studies can help improve the use of the SIF.
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de Oliveira AFJ, Teles CBG, Medeiros JF, Camargo LMA, Pessoa FAC. Description of Trichophoromyia ruifreitasi, a new phlebotomine species (Diptera, Psychodidae) from Acre State, Brazilian Amazon. Zookeys 2015:65-73. [PMID: 26487825 PMCID: PMC4607845 DOI: 10.3897/zookeys.526.6128] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2015] [Accepted: 09/14/2015] [Indexed: 11/12/2022] Open
Abstract
Trichophoromyiaruifreitasisp. n. is described as a new species of sand fly from the genus Trichophoromyia Barretto. This description is supported with illustrations and photographs that detail the morphological characteristics of male specimens collected in the municipality of Assis Brasil, Acre State, Brazilian Amazon. This species is similar to Trichophoromyiaauraensis (Mangabeira), but the two species can be easily differentiated by the distribution of setae on their parameres, and by the presence of a dorsal lobe in the parameres of the new species.
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Affiliation(s)
- Arley Faria José de Oliveira
- Centro de Pesquisa Leônidas e Maria Deane, Fundação Oswaldo Cruz, Rua Terezina, 476, Adrianópolis, Manaus, Amazonas, Brasil
| | - Carolina Bioni Garcia Teles
- Fundação Oswaldo Cruz Rondônia - Fiocruz Rondônia, Rua da Beira, 7671, BR 364, Km 3,5, Bairro Lagoa, Porto Velho, Rondônia, Brasil
| | - Jansen Fernandes Medeiros
- Fundação Oswaldo Cruz Rondônia - Fiocruz Rondônia, Rua da Beira, 7671, BR 364, Km 3,5, Bairro Lagoa, Porto Velho, Rondônia, Brasil
| | - Luís Marcelo Aranha Camargo
- Instituto de Ciências Biomédicas 5, Universidade de São Paulo (USP), Rua Francisco Prestes, 1234, Setor II, Monte Negro, Rondônia, Brasil ; Departamento de Medicina, Faculdade São Lucas, Rua Alexandre Guimarães, 1927, Areal, Porto Velho, Rondônia, Brasil
| | - Felipe Arley Costa Pessoa
- Centro de Pesquisa Leônidas e Maria Deane, Fundação Oswaldo Cruz, Rua Terezina, 476, Adrianópolis, Manaus, Amazonas, Brasil
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Vieira GDD, Florão M, Castro KPO, Alves TDC, Vaiciunas S, Honda ER, Camargo LMA, Sousa CMD. Hepatitis B in Rondônia (Western amazon region, Brazil): descriptive analysis and spatial distribution. Arq Gastroenterol 2015; 52:18-21. [PMID: 26017077 DOI: 10.1590/s0004-28032015000100005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 09/03/2014] [Indexed: 11/22/2022]
Abstract
BACKGROUND The Amazon is one of the regions who have the highest rates of infection by the hepatitis B virus in the world. Objectives This study aimed to evaluate the epidemiological data and spatial distribution of hepatitis B cases reported between 2002 and 2012 in the Brazilian State of Rondônia. METHODS Social and clinical data of these individuals were studied through the Information System for Notifiable Diseases (SINAN), including the following variables: gender, age group, vaccination, contact with a known patient with HBV, exposure to risk factors, source of infection, and clinical status. RESULTS There were 7,132 cases reported in Rondônia, with an average incidence rate of 42/100,000 inhabitants per year. The municipalities with the highest incidence rates were Monte Negro (187.6/100,000 inhabitants) and Ariquemes (157.2/100,000 inhabitants). The 20-39 year-old age group had the highest number of cases (n = 3,834), and 69.9% of patients were likely infected via sexual contact. Regarding the clinical disease status, most of the patients (80.7%) were in the chronic phase. CONCLUSIONS There was a recent 402% increase in the diagnosis of hepatitis B, which is likely owing to the improvements in the public diagnostic system. This highlights the need for public policies to prevent and control the disease.
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Affiliation(s)
| | - Mayara Florão
- Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO, Brasil
| | | | | | - Spencer Vaiciunas
- Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO, Brasil
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Rocha EJGD, Basano SDA, Souza MMD, Honda ER, Castro MBD, Colodel EM, e Silva JCD, Barros LP, Rodrigues ES, Camargo LMA. Study of the prevalence of Capillaria hepatica in humans and rodents in an urban area of the city of Porto Velho, Rondônia, Brazil. Rev Inst Med Trop Sao Paulo 2015; 57:39-46. [PMID: 25651325 PMCID: PMC4325522 DOI: 10.1590/s0036-46652015000100006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 05/29/2014] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Hepatic capillariosis, caused by Capillaria hepatica (Calodium hepaticum) (Bancroft, 1893), Travassos, 1915 (Nematoda, Trichinelloidea, Capillariidae), is a common zoonosis in rodents but is rare in humans. Seventy-two cases in humans have been reported worldwide since the first case was described by MACARTHUR in 192417,27. This study aimed to determine the prevalence of Capillaria hepatica in humans and rodents in an urban area of Porto Velho, the capital of Rondônia, in Brazil. METHODS After conducting a census of the area, 490 residents were randomly selected, and, after signing a term of consent, provided blood samples that were screened for anti-Capillaria hepatica antibodies. Simultaneously, rats were captured to assess the prevalence of this parasite in rodents by histopathological examination in liver sections. RESULTS A prevalence of 1.8% was found among residents who had specific antibodies at a dilution of 1:150, indicating exposure to parasite eggs; 0.8% of the subjects also had positive titers at a dilution of 1:400, indicating true infection. The prevalence in rats was 2%. CONCLUSIONS The prevalence of infection with this parasite among humans and rats was low. While the prevalence encountered among humans was within the limits reported in the literature, the prevalence among rodents was much lower.
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Affiliation(s)
| | | | - Márcia Maria de Souza
- Laboratório de Patologia Experimental, Centro de Pesquisas Gonçalo Moniz, CPqGM/FIOCRUZ, Salvador, Bahia, Brazil
| | | | - Márcio Botelho de Castro
- Laboratório de Patologia Veterinária, Via L4 Norte s/n°, Hospital Universitário, UnB Universidade de Brasília, Campus Universitário Darcy Ribeiro, Brasília, DF, Brazil
| | - Edson Moleta Colodel
- Departamento de Clínica Médica Veterinária, CLIMEV. Faculdade de Agronomia e Medicina Veterinária, FAMEV, Universidade Federal de Mato Grosso/UFMT, Cuiabá, Mato Grosso, Brazil
| | | | - Lauro Prado Barros
- Faculdade São Lucas. R. Alexandre Guimarães, Porto Velho, Rondônia, Brazil
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Vieira GDD, Dos Reis ARP, Augusto FOTDA, Martins KR, Kern PRF, de Souza TF, Basano SDA, Camargo LMA, de Sousa CM. Characteristics relating to the interiorization of acquired immunodeficiency syndrome in Brazil: a cross-sectional study. Infect Dis Poverty 2015; 4:31. [PMID: 26284512 PMCID: PMC4539930 DOI: 10.1186/s40249-015-0060-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Accepted: 05/22/2015] [Indexed: 01/10/2023] Open
Abstract
Background In recent years there has been changes in the social and geographic profile of acquired immunodeficiency syndrome (AIDS). The aim of this study was to evaluate the internalization of AIDS in the state of Rondônia, Brazil. Findings In Rondônia, 1473 AIDS cases were reported, with an average annual incidence of 15.8/100,000 persons (42.7 % women). The most common mode of viral transmission was sexual (96.5 %), and the majority of the individuals had not completed their primary education (64.8 %). There was heterogeneity in relation to case distribution, involving almost all of the municipalities in the state. The average annual mortality rate was 2.5/100,000 persons. Conclusion Rondônia has a higher incidence of AIDS than the national average and the northern region. Efforts to provide access to treatment and follow-up of these individuals should be implemented, prioritizing areas where the incidence is higher and decentralizing the treatment of patients with AIDS in the state. Electronic supplementary material The online version of this article (doi:10.1186/s40249-015-0060-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
| | | | | | | | | | | | - Sérgio de Almeida Basano
- Departament of Medicine, São Lucas College, Porto Velho, Rondônia, Brazil.,Tropical Medicine Center of Rondônia, Porto Velho, Rondônia, Brazil
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Jakobi HR, Barbosa-Branco A, Bueno LF, Ferreira RDGM, Camargo LMA. [Sick leave benefits for workers in the Brazilian meat and fish industries in 2008]. CAD SAUDE PUBLICA 2015; 31:194-207. [PMID: 25715303 DOI: 10.1590/0102-311x00087213] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 08/08/2014] [Indexed: 01/09/2023] Open
Abstract
This study aims to analyze factors associated with sick leave rates among workers in the meat, fish, and seafood industries in Brazil. The study analyzed all sick leave benefits granted by the country's social security system to workers in these industries in 2008. Incidence of sick leave per 10 thousand jobs was stratified by sex, age, diagnosis, job position, State, and nature and length of benefits. The study analyzed 31,913 sick leaves, with an annual incidence of 788.7. Meat processing and packaging showed the highest incidence, and fish and seafood processing and packaging showed the longest mean length of sick leave. Women showed a higher sick leave incidence, while men received longer average sick leaves. Injuries, musculoskeletal disorders, and mental disorders accounted for 67.2% of sick leaves. The most common diagnoses were lower back pain, first-trimester bleeding in pregnancy, and depression. The data suggest poor job protection and adverse working conditions in these industries.
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Vitaliano SN, Mendonça GMD, Sandres FAMD, Camargo JDSAA, Tarso PD, Basano SDA, Silva JCDE, Souza VKGD, Cartonilho G, Almeida ATDSD, Gennari SM, Camargo LMA. Epidemiological aspects of Toxoplasma gondii infection in riverside communities in the Southern Brazilian Amazon. Rev Soc Bras Med Trop 2015; 48:301-6. [DOI: 10.1590/0037-8682-0040-2015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2015] [Accepted: 04/24/2015] [Indexed: 11/22/2022] Open
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Ogawa GM, da Cruz EN, Cunha PNA, Camargo LMA. Canine heartworm disease in Porto Velho: first record, distribution map and occurrence of positive mosquitoes. ACTA ACUST UNITED AC 2015; 22:559-64. [PMID: 24473882 DOI: 10.1590/s1984-29612013000400017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/26/2013] [Indexed: 11/21/2022]
Abstract
The aim of this study was to make the first report on canine heartworm disease in the state of Rondônia and confirm its transmission in this state. Blood samples were randomly collected from 727 dogs in the city of Porto Velho. The samples were analyzed to search for microfilariae and circulating antigens, using three different techniques: optical microscopy on thick blood smears stained with Giemsa; immunochromatography; and PCR. Mosquitoes were collected inside and outside the homes of all the cases of positive dogs and were tested using PCR to search for DNA of Dirofilaria immitis. Ninety-three blood samples out of 727 (12.8%) were positive according to the immunoassay technique and none according to the thick smear method. Among the 93 positive dogs, 89 (95.7%) were born in Porto Velho. No difference in the frequency of infection was observed between dogs raised indoors and in the yard. PCR on the mosquitoes resulted in only one positive pool. This result shows that the transmission of canine heartworm disease is occurring in the city of Porto Velho and that there is moderate prevalence among the dogs. The techniques of immunochromatography and PCR were more effective for detecting canine heartworm than thick blood smears. The confirmation of canine heartworm disease transmission in Porto Velho places this disease in the ranking for differential diagnosis of pulmonary nodules in humans in Rondônia.
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Affiliation(s)
- Guilherme Maerschner Ogawa
- Departamento de Parasitologia, Instituto de Ciências Biomédicas 5 - ICB-5, Universidade de São Paulo - USP, Monte NegroRO, Brasil, Departamento de Parasitologia, Instituto de Ciências Biomédicas 5 - ICB-5, Universidade de São Paulo - USP, Monte Negro, RO, Brasil
| | - Edson Neves da Cruz
- Laboratório de Genética, Faculdade de Biologia, Centro de Ensino São Lucas, Porto VelhoRO, Brasil, Laboratório de Genética, Faculdade de Biologia, Centro de Ensino São Lucas, Porto Velho, RO, Brasil
| | - Príscila Nayara Araújo Cunha
- Laboratório de Genética, Faculdade de Biologia, Centro de Ensino São Lucas, Porto VelhoRO, Brasil, Laboratório de Genética, Faculdade de Biologia, Centro de Ensino São Lucas, Porto Velho, RO, Brasil
| | - Luís Marcelo Aranha Camargo
- Departamento de Parasitologia, Instituto de Ciências Biomédicas 5 - ICB-5, Universidade de São Paulo - USP, Monte NegroRO, Brasil, Departamento de Parasitologia, Instituto de Ciências Biomédicas 5 - ICB-5, Universidade de São Paulo - USP, Monte Negro, RO, Brasil
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Vieira GDD, Basano SDA, Katsuragawa TH, Camargo LMA. Insecticide-treated bed nets in Rondônia, Brazil: evaluation of their impact on malaria control. Rev Inst Med Trop Sao Paulo 2015; 56:493-7. [PMID: 25351543 PMCID: PMC4296869 DOI: 10.1590/s0036-46652014000600007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/24/2014] [Indexed: 11/21/2022] Open
Abstract
Mosquito nets treated with long-lasting insecticide (LLINs),
when used in compliance with guidelines of the World Health Organization, may be
effective for malaria vector control. In 2012, approximately 150,000 LLINs were
installed in nine municipalities in the state of Rondônia. However, no
studies have assessed their impact on the reduction of malaria incidence. This
study analyzed secondary data of malaria incidence, in order to assess the
impact of LLINs on the annual parasite incidence (API). The results
showed no statistically significant differences in API one year after LLIN
installation when compared to municipalities without LLINs. The adoption of
measures for malaria vector control should be associated with epidemiological
studies and evaluations of their use and efficiency, with the aim of offering
convincing advantages that justify their implementation and limit malaria
infection in the Amazon Region.
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Vieira Rocha A, Rita Cardoso B, Cominetti C, Barofaldi Bueno R, de Bortoli MC, Farias LA, Teixeira Favaro DI, Aranha Camargo LM, Franciscato Cozzolino SM. Selenium status and hair mercury levels in riverine children from Rondônia, Amazonia. Nutrition 2014; 30:1318-23. [DOI: 10.1016/j.nut.2014.03.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Revised: 02/28/2014] [Accepted: 03/17/2014] [Indexed: 01/21/2023]
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Vieira GDD, Gim KNM, Zaqueo GM, Alves TDC, Katsuragawa TH, Basano SDA, Camargo LMA, Maciel de Sousa C. Reduction of incidence and relapse or recrudescence cases of malaria in the western region of the Brazilian Amazon. J Infect Dev Ctries 2014; 8:1181-7. [PMID: 25212083 DOI: 10.3855/jidc.4422] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2013] [Revised: 01/27/2014] [Accepted: 05/23/2014] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION Malaria is one of the major parasitic diseases in the State of Rondônia, located in the western Brazilian Amazon. The basic treatment scheme for this disease is chloroquine and primaquine. This study evaluated the epidemiological profile of malaria in Rondônia between 2008 and 2012. METHODOLOGY The epidemiological data were provided by the Health Surveillance Agency from the State of Rondônia, and socioeconomic indicators were obtained from the Brazilian Institute of Geography and Statistics, Department of Informatics of the Unified Health System, and from the National Institute for Space Research. The analyzed variables included year of diagnosis, gender, age group, main activity performed in the 15 days previous to the diagnosis, parasite species, level of parasitemia, number of relapse/recrudescence cases, and socioeconomic and environmental data for Rondônia. RESULTS A total of 238,626 cases of malaria were recorded in Rondônia during the study period. Of this total, 65.6% were men and the most prevalent age group was 20-39 years. Plasmodium vivax was the most common parasite (89.8%), followed by Plasmodium falciparum (9.4%). An average of 30.9% of the individuals who were tested presented with relapse/recrudescence malaria. The API value was highest in 2008 and lowest in 2012, corresponding to 42.3 cases and 19.2 cases per 1,000 inhabitants, respectively. CONCLUSIONS A 58% reduction in the number of malaria cases and a 36.2% reduction in the number of relapse/recrudescence malaria cases were observed, due to increases in the economy, improvements in the health system, and reduction of deforestation in this region.
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Basano SDA, Fontes G, Medeiros JF, Aranha Camargo JSDA, Souza Vera LJ, Parente Araújo MP, Pires Parente MS, Mattos Ferreira RDG, Barreto Crispim PDT, Aranha Camargo LM. Sustained clearance of Mansonella ozzardi infection after treatment with ivermectin in the Brazilian Amazon. Am J Trop Med Hyg 2014; 90:1170-5. [PMID: 24710613 PMCID: PMC4047749 DOI: 10.4269/ajtmh.13-0410] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Accepted: 02/16/2014] [Indexed: 11/07/2022] Open
Abstract
Therapy for mansonelliasis is challenging because there is no standard drug recommended for its treatment. This non-randomized study was conducted to evaluate the effectiveness of a single dose of 0.15 mg/kg of ivermectin to reduce Mansonella ozzardi microfilaraemia in infected persons. A total of 74 patients were studied within the municipality of Lábrea, which is located in Amazonas State, Brazil. The patients were treated with ivermectin after detection of the parasite by blood examination. Significant microfilaraemia reduction was observed and its residual effect was maintained for at least 12 months. There was no significant change in the laboratory blood count, hepatic metabolites, and nitrogen-bounding compound excreta dosage values that could compromise the use of this drug, demonstrating that ivermectin has a low toxicity level.
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Affiliation(s)
- Sergio de Almeida Basano
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Gilberto Fontes
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Jansen Fernandes Medeiros
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Juliana Souza de Almeida Aranha Camargo
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Luana Janaína Souza Vera
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Marcos Paulo Parente Araújo
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Maira Santiago Pires Parente
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo de Godoi Mattos Ferreira
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Pedro di Tárique Barreto Crispim
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
| | - Luís Marcelo Aranha Camargo
- Secretaria de Saúde do Estado de Rondônia (Hospital Cemetron), Porto Velho, Rondônia, Brazil; Faculdade São Lucas, Porto Velho, Rondônia, Brasil; Universidade Federal de São João Del Rei, Campus Divinópolis, Minas Gerais, Brazil; Fundação Oswaldo Cruz, Fiocruz-Rondônia, Porto Velho, Rondônia, Brazil; Universidade Federal de Rondônia, Porto Velho, Rondônia, Brazil; Departamento de Parasitologia, Instituto de Ciências Biomédicas 5, Universidade de São Paulo, São Paulo, Brazil
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Vieira GDD, Alves TDC, Lima SMDD, Camargo LMA, Sousa CMD. Paracoccidioidomycosis in a western Brazilian Amazon State: clinical-epidemiologic profile and spatial distribution of the disease. Rev Soc Bras Med Trop 2014; 47:63-8. [PMID: 24603739 DOI: 10.1590/0037-8682-0225-2013] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Accepted: 01/30/2014] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Paracoccidioidomycosis (PCM) is a systemic infection caused by the fungus Paracoccidioides brasiliensis. PCM is considered one of the most important systemic mycoses in Latin America. METHODS This is a clinical, epidemiological, retrospective, quantitative study of PCM cases in patients attending the National Health Service in the State of Rondônia in 1997-2012. The examined variables included sex, age group, year of diagnosis, education level, profession, place of residence, diagnostic test, prior treatment, medication used, comorbidities and case progress. RESULTS During the study period, 2,163 PCM cases were registered in Rondônia, and the mean annual incidence was 9.4/100,000 people. The municipalities with the highest rates were located in the southeastern region of Rondônia, and the towns of Pimenteiras do Oeste and Espigão do Oeste had the highest rates in the state, which were 39.1/100,000 and 37.4/100,000 people, respectively. Among all cases, 90.2% and 9.8% were observed in men and women, respectively, and most cases (58.2%) were observed in patients aged between 40 and 59 years. Itraconazole was used to treat 91.6% (1,771) of cases, followed by sulfamethoxazole in combination with trimethoprim (4.4% [85] of cases). One hundred thirty-one (6%) patients died. CONCLUSIONS The State of Rondônia has a high incidence of PCM, and the municipalities in the southeastern region of the state were found to have the highest incidence rates of this disease. Our findings suggest that Rondônia is the state in the northern region with the highest mortality rate for PCM.
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Affiliation(s)
- Gabriel de Deus Vieira
- Departamento de Medicina, Faculdade São Lucas, Porto VelhoRO, Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO
| | - Thaianne da Cunha Alves
- Departamento de Medicina, Faculdade São Lucas, Porto VelhoRO, Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO
| | - Sônia Maria Dias de Lima
- Departamento de Medicina, Faculdade São Lucas, Porto VelhoRO, Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO
| | - Luís Marcelo Aranha Camargo
- Departamento de Medicina, Faculdade São Lucas, Porto VelhoRO, Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO
| | - Camila Maciel de Sousa
- Departamento de Medicina, Faculdade São Lucas, Porto VelhoRO, Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO
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Jakobi HR, Barbosa-Branco A, Bueno LF, Ferreira RDGM, Camargo LMA. [Inability to work: analysis of sickness benefits granted in the State of Rondônia]. Cien Saude Colet 2013; 18:3157-68. [PMID: 24196881 DOI: 10.1590/s1413-81232013001100006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 03/10/2013] [Indexed: 01/09/2023] Open
Abstract
This is a descriptive epidemiological study aiming to o estimate the prevalence and duration of sickness benefits granted by the Brazilian Social Security Institute, as well as the clinical causes of inability to work among employees in Rondonia in 2008. The prevalence was submitted by 10,000 workers and stratified by sex, age, diagnosis, economic activity, and type and duration of benefits. Men had a higher prevalence and duration of benefits. Social security benefits were found to be 2,5 times more prevalent than accident benefits and both increased with age. Labor accidents were more prevalent in the age group ranging between 50-59 years, and Forestry, construction and manpower leasing: had the highest prevalence. The main diagnostic groups were injuries, musculoskeletal system disorders and digestive diseases. The duration of the sickness benefits was higher among men, =40 years and in the social security category. The economic activity is an important risk factor for Inability to work, and it needs to be further explored in order to improve sickness prevention and reduce the impact on workers' health arising from environmental conditions and working processes.
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Santos RVD, Nunes JDS, Camargo JADSA, Rocha EMMD, Fontes G, Camargo LMA. High occurrence of Entamoeba histolytica in the municipalities of Ariquemes and Monte Negro, State of Rondônia, Western Amazonia, Brazil. Rev Inst Med Trop Sao Paulo 2013; 55:S0036-46652013000300193. [PMID: 23740019 DOI: 10.1590/s0036-46652013000300010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Accepted: 10/16/2012] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Entamoeba histolytica infections were investigated in residents of the Ariquemes and Monte Negro municipalities in Rondônia State, Brazil. METHODS Stool samples of 216 individuals were processed by the spontaneous sedimentation method and analyzed by microscopy for detection of the E. histolytica/E. dispar complex, followed by the immunoassay method using an enzyme-linked immunosorbent assay-based kit for the E. histolytica stool antigen. RESULTS E. histolytica/E. dispar cysts were present in 61% (50/82) and 44% (59/134) of the samples from Ariquemes and Monte Negro respectively, with a significant difference in the occurrence of infection between the two populations [p < 0.05; χ2 = 5.2; odds ratio = 2.0 (1.1 - 3.6)]. The E. histolytica antigen detection rate was 36.6% (30/82) for stool samples from Ariquemes, and 19.4% (26/134) for stool taken from the residents of Monte Negro. The rate of the occurrence of amoebiasis was significantly higher in the population from Ariquemes [p < 0.05; χ2 = 7.8; odds ratio = 2.4 (1.2 - 4.7)]. DISCUSSION Due to the high occurrence of E. histolytica infected residents diagnosed in the region and the unavailability in local clinics of a test to distinguish between the two Entamoeba species, physicians should consider treating E. histolytica/E.dispar infections. CONCLUSION The results indicate that E. histolytica infection is highly endemic in the studied areas.
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Affiliation(s)
- Rafael Vital dos Santos
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas, Maceió, AL, Brazil
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Korte RL, Fontes G, Camargo JDSAA, Rocha EMMD, Araújo EACD, Oliveira MZD, Santos RVD, Camargo LMA. Survey of Bancroftian filariasis infection in humans and Culex mosquitoes in the western Brazilian Amazon region: implications for transmission and control. Rev Soc Bras Med Trop 2013; 46:214-20. [DOI: 10.1590/0037-8682-1708-2013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Accepted: 02/14/2013] [Indexed: 05/27/2023] Open
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Aguiar DM, Zhang X, Melo ALT, Pacheco TA, Meneses AMC, Zanutto MS, Horta MC, Santarém VA, Camargo LMA, McBride JW, Labruna MB. Genetic diversity of Ehrlichia canis in Brazil. Vet Microbiol 2013; 164:315-21. [PMID: 23490559 DOI: 10.1016/j.vetmic.2013.02.015] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 02/17/2013] [Accepted: 02/18/2013] [Indexed: 10/27/2022]
Abstract
Canine monocytic ehrlichiosis is a highly prevalent disease in Brazil, where the genetic diversity of Ehrlichia canis remains undefined. In this study, we used the TRP36 gene to examine the genetic diversity of E. canis strains from naturally infected dogs residing in five distinct geographic regions in Brazil. E. canis DNA was detected in 82/126 (65%) dogs by dsb-specific PCR and E. canis was isolated in cell culture from 13 dogs. Sequences obtained from dsb genes amplified from the isolates were identical to the US E. canis strain. An extended molecular characterization based on the TRP36 gene identified two major genogroups based on differences among eight isolates. Isolates with tandem repeat amino acid sequence (TEDSVSAPA) identical to the previously reported TRP36 sequence were found in the midwest, northeast and southeast regions of Brazil, and classified into the US genogroup. A novel Brazilian genotype with a different tandem repeat sequence (ASVVPEAE) was also identified in midwest, northern and southern regions. Similarity in the N-terminal sequence of a US genogroup member with the Brazilian genogroup suggested that genomic recombination between the two genogroups may have occurred. Other subtypes within the Brazilian genogroup were also identified using C-terminal amino acid divergence. We identified two distinct major Brazilian genogroups and several subtypes based on analysis of TRP36, and such information will be useful for further genotyping and possible associations with disease severity, understanding of the genetic and antigenic variability of E. canis, and for developing strain-specific vaccines and diagnostic methods based on TRP36.
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Affiliation(s)
- D M Aguiar
- Laboratório de Virologia e Rickettsioses, Hospital Veterinário, Universidade Federal de Mato Grosso, Cuiabá, MT, Brazil.
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Teles CBG, Freitas RA, De Oliveira AFJ, Ogawa GM, De Araújo EAC, Medeiros JF, Pessoa FAC, Camargo LMA. Description of a new phlebotomine species (Diptera: Psychodidae, Phlebotominae) and new records of sand flies from the State of Acre, northern Brazil. Zootaxa 2013; 3609:85-90. [PMID: 24699574 DOI: 10.11646/zootaxa.3609.1.6] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 01/24/2013] [Indexed: 11/04/2022]
Abstract
Groundbreaking studies of phlebotomine sand fly populations in Assis Brasil, State of Acre, Brazil, resulted in the collection of 13 new records of phlebotomine sand flies and one previously undescribed species. Lutzomyia naiffi sp. nov. is described here. The new species is similar to Lutzomyia columbiana (Ristorcelli & Van Ty) in measurements and other morphological characters.
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Affiliation(s)
- Carolina Bioni Garcia Teles
- Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO Instituto de Ciências Biomédicas 5, Universidade de São Paulo (USP), Monte Negro, RO, Brasil;
| | - Rui Alves Freitas
- Coordenação Sociedade, Ambiente e Saúde, Instituto Nacional de Pesquisas da Amazônia, Manaus, AM, Brasil;
| | | | | | | | | | | | - Luís Marcelo Aranha Camargo
- Departamento de Medicina, Faculdade São Lucas, Porto Velho, RO Instituto de Ciências Biomédicas 5, Universidade de São Paulo (USP), Monte Negro, RO, Brasil;
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Meneguetti DUDO, Trevisan O, Camargo LMA, Rosa RM. Natural infection of triatomines (Hemiptera: Reduviidae) by trypanosomatids in two different environments in the municipality of Ouro Preto do Oeste, State of Rondônia, Brazil. Rev Soc Bras Med Trop 2012; 45:395-8. [DOI: 10.1590/s0037-86822012000300023] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2010] [Accepted: 03/15/2011] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION: This study analyzed the occurrence and the contamination of triatomines by trypanosomatids in Orbignya speciosa (babassu) specimens in the State of Rondônia, Brazil, in two different environments (pasture and woods). METHODS: Capture of triatomines on babassus and microscopic search for trypanosomatids in their digestive tube were carried out. RESULTS: Four hundred ninety-four (494) specimens were captured (Rhodnius prolixus and R.robustus), of which 35.6% of the triatomines were positive for trypanosomatids. CONCLUSIONS: The high index of natural infection along with the abundance of triatomines points out to the necessity to create an epidemiological surveillance system to monitor vector-borne transmission and deepen the studies on the ecology of such vectors in the Amazon.
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Meneguetti DUDO, Trevisan O, Rosa RM, Camargo LMA. First report of Eratyrus mucronatus, Stal, 1859, (Hemiptera, Reduviidae, Triatominae), in the State of Rondônia, Brazil. Rev Soc Bras Med Trop 2012; 44:511-2. [PMID: 21860901 DOI: 10.1590/s0037-86822011000400022] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2010] [Accepted: 08/11/2010] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION This paper reports, for the first time, the presence of the Eratyrus mucronatus species in the State of Rondonia, Brazil. METHODS These specimens were caught by chance in the forest and later they were collected using luminous traps. RESULTS After finding these specimens, the number of the Triatominae genera in Rondonia rose to four, while its species rose to seven. CONCLUSIONS Complimentary studies will be conducted in order to allow for clearer understanding the ecology of this arthropod, its possible role in transmitting Chagas' disease and its current geographical distribution.
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Pessoa FAC, Castellón-Bermúdez EG, Medeiros JF, Camargo LMA. First occurrence of the human biting midge Leptoconops brasiliensis (Lutz) (Diptera: Ceratopogonidae) in the triple border of Brazil, Peru, and Bolivia. Rev Soc Bras Med Trop 2012; 45:138-9. [DOI: 10.1590/s0037-86822012000100030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Basano SDA, Camargo JDSAA, Vera LJDS, Velasques SN, Ogawa GM, Medeiros JF, Fontes G, Camargo LMA. Investigation of the occurrence of Mansonella ozzardi in the State of Rondônia, Western Amazonia, Brazil. Rev Soc Bras Med Trop 2011; 44:600-3. [PMID: 21877064 DOI: 10.1590/s0037-86822011005000055] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2010] [Accepted: 02/21/2011] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Mansonella ozzardi, a human filarial nematode transmitted by Diptera Simuliidae flies (black flies), is widely spread in the Amazon, while the occurrence of mansonelliasis in the State of Rondônia (Western Amazonia) has not been reported thus far. The existence of this parasitic disease in this state is investigated in this study. METHODS A total of 4,452 people who lived alongside the Madeira, Mamore, Guapore, Machado and Preto Rivers, in the State of Rondônia, were examined using the thick blood smear method. Alongside the Machado and Guapore rivers, 2,112 adult simuliid specimens were captured. RESULTS Infected people were not reported, although simuliids with vector potential such as Cerqueirellum pydanielli, C. argentiscutum and C. amazonicum were found. CONCLUSIONS This study registered no infected people. This finding may be explained by the individuals' low level of microfilaremia that is below the limit of detection of the diagnostic method used in the study or insufficient migration of people infected with M. ozzardi from endemic areas, making it impossible to introduce the disease into Rondônia. Further studies using more sensitive diagnostic techniques could shed light on this question.
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Vera LJS, Basano SDA, Camargo JDSAA, França AKD, Ferreira RDGM, Casseb AA, Medeiros JF, Fontes G, Camargo LMA. Improvement of a PCR test to diagnose infection by Mansonella ozzardi. Rev Soc Bras Med Trop 2011; 44:380-2. [DOI: 10.1590/s0037-86822011000300023] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2010] [Accepted: 11/16/2010] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION: Mansonelliasis is caused by Mansonella ozzardi. It is widespread in the Amazon region, with a high prevalence. The common exam of thick blood smears stained with Giemsa shows low efficacy levels and has been an obstacle to diagnosing individuals with low blood parasitemia. METHODS: In order to increase diagnosis efficacy, the PCR technique was improved. RESULTS AND CONCLUSIONS: PCR demonstrated the best performance, with sensitivity and negative predictive values (NPV) of 100%, followed by blood filtration through membrane filters, which showed a sensitivity of 88.9% and a NPV of 84.6%, when compared to thick blood smears.
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