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Paixão DDS, Portela Madeira F, Costa de Jesus A, Paixão HCDS, Camargo JDSAA, Ribeiro MAL, José Ramos L, de Oliveira J, Aristeu da Rosa J, Bernarde PS, Pereira Relvas A, Basano SDA, Aranha Camargo LM, Meneguetti DUDO. Mapping the Silent Threat: A Comprehensive Analysis of Chagas Disease Occurrence in Riverside Communities in the Western Amazon. Pathogens 2024; 13:176. [PMID: 38392913 PMCID: PMC10891998 DOI: 10.3390/pathogens13020176] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 01/28/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
Chagas disease (CD) is a typical tropical illness caused by Trypanosoma cruzi. The objective of this study was to assess the prevalence of Chagas disease in communities in two states of the Brazilian Amazon. Data collection occurred in July in the Alto Juruá region of Acre and in December in the communities of Humaitá, Amazonas, in 2019. A total of 477 participants were included in the study. In the communities of Alto Juruá, triatomine collections and analyses of T. cruzi infection were also carried out. All confirmed cases were found in the state of Acre, resulting in a total prevalence of 1.67. Of these eight cases, seven underwent ECG, all of which were concluded as normal by the physician team's cardiologists. Seventeen triatomine bugs, all belonging to the Rhodnius genus, were captured. The natural infection rate by T. cruzi was 25% in the Nova Cintra community and 66.67% in the Boca do Moa community (Alto Juruá). This research found that more than 1% of the studied population exhibited positive serological results for Chagas disease in the riverine communities during the study period, representing a small portion of cases among those who have not yet been diagnosed.
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Affiliation(s)
- Daniela da Silva Paixão
- Postgraduate Program in Health Sciences in the Western Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil; (D.d.S.P.); (F.P.M.); (A.C.d.J.); (M.A.L.R.); (P.S.B.); (D.U.d.O.M.)
| | - Fernanda Portela Madeira
- Postgraduate Program in Health Sciences in the Western Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil; (D.d.S.P.); (F.P.M.); (A.C.d.J.); (M.A.L.R.); (P.S.B.); (D.U.d.O.M.)
- Multidisciplinary Center, Federal University of Acre, Cruzeiro do Sul 69.980-000, Brazil
| | - Adila Costa de Jesus
- Postgraduate Program in Health Sciences in the Western Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil; (D.d.S.P.); (F.P.M.); (A.C.d.J.); (M.A.L.R.); (P.S.B.); (D.U.d.O.M.)
- Multidisciplinary Center, Federal University of Acre, Cruzeiro do Sul 69.980-000, Brazil
| | - Hêmilly Caroline da Silva Paixão
- Postgraduate Program in Science, Innovation and Technology for the Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil;
| | | | - Mariane Albuquerque Lima Ribeiro
- Postgraduate Program in Health Sciences in the Western Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil; (D.d.S.P.); (F.P.M.); (A.C.d.J.); (M.A.L.R.); (P.S.B.); (D.U.d.O.M.)
- Center for Health and Sports Sciences, Federal University of Acre, Rio Branco 69.920-900, Brazil;
| | - Leandro José Ramos
- Center for Health and Sports Sciences, Federal University of Acre, Rio Branco 69.920-900, Brazil;
| | - Jader de Oliveira
- Postgraduate Program in Science, Innovation and Technology for the Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil;
- Public Health Entomology Laboratory, Department of Epidemiology, Faculty of Public Health, University of São Paulo, São Paulo 01.246-904, Brazil
| | - João Aristeu da Rosa
- Faculty of Pharmaceutical Sciences, Paulista State University “Júlio de Mesquita Filho”, Araraquara 14.800-700, Brazil;
| | - Paulo Sérgio Bernarde
- Postgraduate Program in Health Sciences in the Western Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil; (D.d.S.P.); (F.P.M.); (A.C.d.J.); (M.A.L.R.); (P.S.B.); (D.U.d.O.M.)
- Multidisciplinary Center, Federal University of Acre, Cruzeiro do Sul 69.980-000, Brazil
| | | | - Sergio de Almeida Basano
- Institute of Biomedical Sciences, University of São Paulo, Monte Negro 05.508-000, Brazil; (J.d.S.A.A.C.); (S.d.A.B.); (L.M.A.C.)
| | - Luis Marcelo Aranha Camargo
- Institute of Biomedical Sciences, University of São Paulo, Monte Negro 05.508-000, Brazil; (J.d.S.A.A.C.); (S.d.A.B.); (L.M.A.C.)
- National Institute of Epidemiology of the Western Amazon, Tropical Medicine Research Center, Porto Velho 76.812-329, Brazil
| | - Dionatas Ulises de Oliveira Meneguetti
- Postgraduate Program in Health Sciences in the Western Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil; (D.d.S.P.); (F.P.M.); (A.C.d.J.); (M.A.L.R.); (P.S.B.); (D.U.d.O.M.)
- Postgraduate Program in Science, Innovation and Technology for the Amazon, Federal University of Acre, Rio Branco 69.920-900, Brazil;
- Application College, Federal University of Acre, Rio Branco 69.920-900, Brazil
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Camargo LMA. Prof. Dr. Erney Plessmann de Camargo (★1935 †2023). Rev Soc Bras Med Trop 2023; 56:e02722023. [PMID: 37493756 PMCID: PMC10367207 DOI: 10.1590/0037-8682-0272-2023] [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: 06/07/2023] [Accepted: 06/13/2023] [Indexed: 07/27/2023] Open
Affiliation(s)
- Luis Marcelo Aranha Camargo
- Universidade de São Paulo, Instituto de Ciências Biomédicas, Departamento de Parasitologia, São Paulo, SP, Brasil
- Secretaria de Estado da Saúde de Rondônia, Centro de Pesquisa em Medicina Tropical, Porto Velho, RO, Brasil
- Instituto Nacional de Ciência e Tecnologia de Epidemiologia da Amazônia Ocidental, Porto Velho, RO, Brasil
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Cruz KSD, Ribeiro MAL, Madeira FP, Paixão DDS, Jesus ACD, Camargo LMA, Rosa JAD, Oliveira JD, Bernarde PS, Meneguetti DUDO. Occurrence of triatomines in public spaces: An atypical case in the Southwestern Brazilian Amazon. Rev Soc Bras Med Trop 2023; 56:e0042. [PMID: 37075450 PMCID: PMC10109346 DOI: 10.1590/0037-8682-0042-2023] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Accepted: 03/08/2023] [Indexed: 04/21/2023] Open
Abstract
BACKGROUND Triatomines infest atypical public spaces in the Western Amazon. METHODS Frequent visitors to these spaces captured the insects in the state of Acre, Brazil (Rio Branco and Cruzeiro do Sul). RESULTS Six insects were found in a penitentiary, a church, a school, a university, a hospital, and a health center. Five of the insects were adults (three positive for Trypanosoma cruzi) and one was a nymph. CONCLUSIONS This is the first report of triatomine occurrence in schools or churches. These data are important for implementing surveillance strategies and alerting individuals about possible changes in Chagas disease transmission dynamics.
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Affiliation(s)
- Karoline Silva da Cruz
- Universidade Federal do Acre, Programa de Pós-Graduação em Ciências da Saúde na Amazônia Ocidental, Rio Branco, AC, Brasil
| | - Mariane Albuquerque Lima Ribeiro
- Universidade Federal do Acre, Centro de Ciências da Saúde e do Desporto, Campus Rio Branco, Rio Branco, AC, Brasil
- Universidade de São Paulo, Faculdade de Saúde Pública, Laboratório de Entomologia em Saúde Pública, São Paulo, SP, Brasil
| | - Fernanda Portela Madeira
- Universidade Federal do Acre, Centro Multidisciplinar, Campus Floresta, Cruzeiro do Sul, AC, Brasil
| | - Daniela da Silva Paixão
- 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, Centro Multidisciplinar, Campus Floresta, Cruzeiro do Sul, AC, Brasil
| | - Luis 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 5, Monte Negro, RO, Brasil
| | - João Aristeu da Rosa
- Universidade Estadual Paulista "Júlio de Mesquita Filho", Faculdade de Ciências Farmacêuticas, Departamento de Ciências Biológicas, Araraquara, SP, Brasil
| | - Jader de Oliveira
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, AC, Brasil
- Universidade de São Paulo, São Paulo, SP, 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, Campus Floresta, Cruzeiro do Sul, AC, Brasil
- Universidade Federal do Acre, Programa de Pós-Graduação Stricto Sensu em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, 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, Programa de Pós-Graduação Stricto Sensu em Ciência, Inovação e Tecnologia para a Amazônia, Rio Branco, AC, Brasil
- Universidade Federal do Acre, Colégio de Aplicação, Rio Branco, AC, Brasil
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Maciel-Fiuza MF, Costa PDSS, Kowalski TW, Schuler-Faccini L, Bonamigo RR, Vetoratto R, Eidt LM, de Moraes PC, Silveira MIDS, Camargo LMA, Callegari-Jacques SM, Castro SMDJ, Vianna FSL. Evaluation of Polymorphisms in Toll-Like Receptor Genes as Biomarkers of the Response to Treatment of Erythema Nodosum Leprosum. Front Med (Lausanne) 2022; 8:713143. [PMID: 35141236 PMCID: PMC8819000 DOI: 10.3389/fmed.2021.713143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 12/09/2021] [Indexed: 01/18/2023] Open
Abstract
Erythema nodosum leprosum (ENL) is an inflammatory complication caused by a dysregulated immune response to Mycobacterium leprae. Some Toll-like receptors (TLRs) have been identified as capable of recognizing antigens from M. leprae, triggering a wide antimicrobial and inflammatory response. Genetic polymorphisms in these receptors could influence in the appearance of ENL as well as in its treatment. Thus, the objective of this work was to evaluate the association of genetic variants of TLRs genes with the response to treatment of ENL with thalidomide and prednisone. A total of 162 ENL patients were recruited from different regions of Brazil and clinical information was collected from their medical records. Genomic DNA was isolated from blood and saliva samples and genetic variants in TLR1 (rs4833095), TLR2 (rs3804099), TLR4 (rs1927914), and TLR6 (rs5743810) genes were genotyped by TaqMan real-time PCR system. In order to evaluate the variants' association with the dose of the medications used during the treatment, we applied the Generalized Estimating Equations (GEE) analysis. In the present sample, 123 (75.9%) patients were men and 86 (53.1%) were in treatment for leprosy during the ENL episode. We found an association between polymorphisms in TLR1/rs4833095, TLR2/rs3804099, TLR4/rs1927914, and TLR6/rs5783810 with the dose variation of thalidomide in a time-dependent manner, i.e., the association with the genetic variant and the dose of the drug was different depending on the moment of the treatment evaluated. In addition, we identified that the association of polymorphisms in TLR1/rs4833095, TLR2/rs3804099, and TLR6/rs5783810 with the dose variation of prednisone also were time-dependent. Despite these associations, in all the interactions found, the influence of genetic variants on dose variation was not clinically relevant for therapeutic changes. The results obtained in this study show that TLRs polymorphism might play a role in the response to ENL treatment, however, in this context, they could not be considered as useful biomarkers in the clinical setting due small differences in medication doses. A larger sample size with patients with a more genetic profile is fundamental in order to estimate the association of genetic variants with the treatment of ENL and their clinical significance.
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Affiliation(s)
- Miriãn Ferrão Maciel-Fiuza
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Genomics Medicine Laboratory, Center of Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Laboratory of Immunobiology and Immunogenetics, Postgraduate Program in Genetics and Molecular Biology, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | | | - Thayne Woycinck Kowalski
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Genomics Medicine Laboratory, Center of Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Laboratory of Immunobiology and Immunogenetics, Postgraduate Program in Genetics and Molecular Biology, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Lavínia Schuler-Faccini
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Teratogen Information Service, Medical Genetics Service, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
| | - Renan Rangel Bonamigo
- Post-graduate Program in Pathology, Universidade Federal De Ciências Da Saúde de Porto Alegre, Porto Alegre, Brazil
- Dermatology Service of Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Rodrigo Vetoratto
- Dermatology Service of Santa Casa Hospital of Porto Alegre, Porto Alegre, Brazil
| | - Letícia Maria Eidt
- Sanitary Dermatology Clinic, Secretaria De Saúde Do Estado Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Paulo Cezar de Moraes
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Sanitary Dermatology Clinic, Secretaria De Saúde Do Estado Do Rio Grande Do Sul, Porto Alegre, Brazil
| | | | - Luis Marcelo Aranha Camargo
- National Reference Center for Health Dermatology Dona Libania, Fortaleza, Brazil
- Center for Research in Tropical Medicine, Porto Velho, Rondonia, Brazil
- National Institute of Science and Technology-EpiAmo, Rondonia, Brazil
- Department of Medicine, Centro Universitario São Lucas, Porto Velho, Rondônia, Brazil
- National Institute of Science and Technology/CNPq-EpiAmo, Rondonia, Brazil
| | - Sidia Maria Callegari-Jacques
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Department of Statistics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Stela Maris de Jezus Castro
- Department of Statistics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Postgraduate Program in Epidemiology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
| | - Fernanda Sales Luiz Vianna
- Postgraduate Program in Genetics and Molecular Biology, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Instituto Nacional de Genética Médica Populacional, Porto Alegre, Brazil
- Genomics Medicine Laboratory, Center of Experimental Research, Hospital de Clínicas de Porto Alegre, Porto Alegre, Brazil
- Laboratory of Immunobiology and Immunogenetics, Postgraduate Program in Genetics and Molecular Biology, Department of Genetics, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
- Postgraduate Program in Medicine, Medical Sciences, Universidade Federal Do Rio Grande Do Sul, Porto Alegre, Brazil
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Ribeiro MAL, Castro GVDS, Souza JLD, Rosa JAD, Camargo LMA, Meneguetti DUDO. Occurrence of triatomines in an urban residential complex in the municipality of Rio Branco, Acre, South-Western Amazon. Rev Soc Bras Med Trop 2019; 52:e20180177. [PMID: 31038619 DOI: 10.1590/0037-8682-0177-2018] [Citation(s) in RCA: 7] [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: 05/02/2018] [Accepted: 12/27/2018] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION This study describes the occurrence of triatomines, and their positivity for trypanosomatids, in a residential complex in Rio Branco, Acre, Brazil. METHODS Triatomines were collected through direct capture in a home environment. Positivity analysis for trypanosomatids was performed by PCR assays. RESULTS Collected insects consisted of 31 Rhodnius robustus, 4 Rhodnius montenegrensis, and 1 Panstrongylus geniculatus specimens. All were adults, with no presence of domiciliation, and with an infection rate of 30.6%. CONCLUSIONS Future studies are recommended in other locations of Rio Branco in order to develop a georeference database of the occurrence of triatomines in urban areas.
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Affiliation(s)
- Mariane Albuquerque Lima Ribeiro
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Gabriela Vieira de Souza Castro
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Janis Lunier de Souza
- Departamento de Entomologia da Secretaria Municipal de Saúde, Rio Branco, AC, Brasil
| | - João Aristeu da Rosa
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil.,Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil
| | - Luis 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, RO, Brasil.,Centro de Pesquisas em Medicina Tropical, 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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Ribeiro MAL, Castro GVDS, Souza JLD, Cardoso ADS, Madeira FP, Camargo LMA, Meneguetti DUDO. First report of Panstrongylus lignarius (Walker, 1873) (Hemiptera: Reduviidae: Triatominae) in the State of Acre, Brazil. Rev Soc Bras Med Trop 2019; 52:e20180307. [PMID: 30892400 DOI: 10.1590/0037-8682-0307-2018] [Citation(s) in RCA: 3] [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: 07/24/2018] [Accepted: 08/31/2018] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION This communication reports the first occurrence of Panstrongylus lignarius in the State of Acre, Brazil. METHODS A specimen of P. lignarius was collected from a residence in a rural area of the municipality of Rio Branco, Acre, Western Amazon. RESULTS This new report of P. lignarius extends the distribution of this species to eight Brazilian states, and also increases the number of species of Triatominae described from the state of Acre from nine to ten. CONCLUSIONS The occurrence of P. lignarius deserves attention, since this species has the potential for domiciliation and transmitting Trypanosoma cruzi.
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Affiliation(s)
- Mariane Albuquerque Lima Ribeiro
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Gabriela Vieira de Souza Castro
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | | | | | - Fernanda Portela Madeira
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Luis 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, RO, Brasil.,Centro de Pesquisas em Medicina Tropical, Porto Velho, RO, Brasil.,Instituto Nacional de Ciência e Tecnologia EpiAmo, 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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Ribeiro Castro MAL, de Souza Castro GV, de Souza JL, de Souza CR, Ramos LJ, de Oliveira J, da Rosa JA, Aranha Camargo LM, Meneguetti DUDO. First report of Panstrongylus megistus (Hemiptera, Reduviidae, Triatominae) in the State of Acre and Rondônia, Amazon, Brazil. Acta Trop 2018; 182:158-160. [PMID: 29499170 DOI: 10.1016/j.actatropica.2018.02.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 07/28/2017] [Revised: 02/03/2018] [Accepted: 02/27/2018] [Indexed: 11/17/2022]
Abstract
INTRODUCTION This article reports, for the first time, the occurrence of Panstrongylus megistus in the Brazilian Western Amazon. METHODS Specimens of P. megistus were collected in the cities of Rio Branco, Acre and Extrema, Rondônia. RESULTS The number of triatomine species in the State of Acre increased from eight to nine and in Rondônia from seven to eight. This was also the first report of P. megistus in the Brazilian Western Amazon. CONCLUSION The occurrence of P. megistus in the Western Amazon evidences an epidemiological alert, since it is an important vector of T. cruzi.
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Affiliation(s)
- Mariane Albuquerque Lima Ribeiro Castro
- Center for Health Sciences and Sports, Federal University of Acre, Rio Branco, Acre, Brazil; Stricto Sensu Graduate Program in Health Science in Western Amazon, Federal University of Acre, Rio Branco, Acre, Brazil
| | - Gabriela Vieira de Souza Castro
- Center for Health Sciences and Sports, Federal University of Acre, Rio Branco, Acre, Brazil; Stricto Sensu Graduate Program in Health Science in Western Amazon, Federal University of Acre, Rio Branco, Acre, Brazil
| | - Janis Lunier de Souza
- Department of Entomology of the State Department of Health, Rio Branco, Acre, Brazil
| | | | - Leandro José Ramos
- Center for Health Sciences and Sports, Federal University of Acre, Rio Branco, Acre, Brazil
| | - Jader de Oliveira
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, State University of São Paulo Júlio of Mesquita Filho, Araraquara, São Paulo, Brazil; Stricto Sensu Graduate Program in Biosciences and Biotechnology, State University of São Paulo Júlio of Mesquita Filho, Araraquara, São Paulo, Brazil
| | - João Aristeu da Rosa
- Department of Biological Sciences, Faculty of Pharmaceutical Sciences, State University of São Paulo Júlio of Mesquita Filho, Araraquara, São Paulo, Brazil; Stricto Sensu Graduate Program in Biosciences and Biotechnology, State University of São Paulo Júlio of Mesquita Filho, Araraquara, São Paulo, Brazil
| | - Luis Marcelo Aranha Camargo
- Stricto Sensu Graduate Program in Health Science in Western Amazon, Federal University of Acre, Rio Branco, Acre, Brazil; Institute of Biomedical Sciences-5, University of São Paulo, Monte Negro, Rondônia, Brazil; Department of Medicine, University Center São Lucas, Porto Velho, Rondônia, Brazil; Center for Research in Tropical Medicine, Porto Velho, Rondônia, Brazil
| | - Dionatas Ulises de Oliveira Meneguetti
- Stricto Sensu Graduate Program in Health Science in Western Amazon, Federal University of Acre, Rio Branco, Acre, Brazil; Stricto Sensu Postgraduate Program in Science, Innovation and Technology for the Amazon, Federal University of Acre, Rio Branco, Acre, Brazil; College of Application, Federal University of Acre, Rio Branco, Acre, Brazil.
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Ramos LJ, Castro GVDS, Souza JLD, Oliveira JD, Rosa JAD, Camargo LMA, Cunha RMD, Meneguetti DUDO. First report of Rhodnius neglectus (Hemiptera, Reduviidae, Triatominae) from the State of Acre, Brazil, and the Brazilian Western Amazon Region. Rev Soc Bras Med Trop 2018; 51:212-214. [PMID: 29768556 DOI: 10.1590/0037-8682-0320-2017] [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] [Received: 08/05/2017] [Accepted: 11/17/2017] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION This communication reports the occurrence of Rhodnius neglectus in the State of Acre, Brazil. METHODS An adult male R. neglectus specimen was collected from the Catuaba Experimental Reserve, which is located in the municipality of Senador Guiomard. RESULTS This increases the number of triatomine species reported from the State of Acre to eight and is also the first report of R. neglectus from the Brazilian Western Amazon Region. CONCLUSIONS The occurrence of R. neglectus is alarming because even though the species is wild, it can invade and colonize human dwellings and peridomiciles, thereby increasing Chagas disease transmission.
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Affiliation(s)
- Leandro José Ramos
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Biodiversidade e Biotecnologia da Amazônia Legal, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Gabriela Vieira de Souza Castro
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | | | - Jader de Oliveira
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil.,Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil
| | - João Aristeu da Rosa
- Departamento de Entomologia, Secretaria Estadual de Saúde, Rio Branco, AC, Brasil.,Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil
| | - Luis 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, RO, Brasil.,Centro de Pesquisas em Medicina Tropical, Porto Velho, RO, Brasil
| | - Renildo Moura da Cunha
- Programa de Pós-Graduação Stricto Sensu em Biodiversidade e Biotecnologia da Amazônia Legal, 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.,Centro de Ciências Biológicas e da Natureza, Universidade Federal do Acre, Rio Branco, AC, 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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Castro GVDS, Ribeiro MAL, Ramos LJ, Oliveira JD, Rosa JAD, Camargo LMA, Meneguetti DUDO. Rhodnius stali: new vector infected by Trypanosoma rangeli (Kinetoplastida, Trypanosomatidae). Rev Soc Bras Med Trop 2018; 50:829-832. [PMID: 29340462 DOI: 10.1590/0037-8682-0054-2017] [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] [Received: 02/09/2017] [Accepted: 08/24/2017] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION Rhodnius stali infection by Trypanosoma rangeli is reported in this study for the first time. METHODS The triatomines were collected from the campus of the Federal University of Acre in Rio Branco, Acre, Brazil. The identification of T. rangeli was confirmed by multiplex polymerase chain reaction. RESULTS The examinations of two specimens revealed R. stali infection by the epimastigote forms of T. rangeli. CONCLUSIONS The encounter of R. stali infected by T. rangeli generates an alert for the state of Acre, since the simultaneous presence with Trypanosoma cruzi can make the differential diagnosis of Chagas disease difficult.
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Affiliation(s)
- 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
| | - 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
| | - Leandro José Ramos
- Centro de Ciências da Saúde e do Desporto, Universidade Federal do Acre, Rio Branco, AC, Brasil.,Programa de Pós-Graduação Stricto Sensu em Biodiversidade e Biotecnologia da Amazônia Legal, Universidade Federal do Acre, Rio Branco, AC, Brasil
| | - Jader de Oliveira
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil.,Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil
| | - João Aristeu da Rosa
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil.,Programa de Pós-Graduação Stricto Sensu em Biociências e Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, SP, Brasil
| | - Luis 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, RN, Brasil.,Departamento de Medicina, Faculdade São Lucas, Porto Velho, RN, Brasil.,Centro de Pesquisas em Medicina Tropical, Porto Velho, RN, Brazil
| | - 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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Ramos LJ, Souza JLD, Souza CRD, Oliveira JD, Rosa JAD, Camargo LMA, Cunha RMD, Meneguetti DUDO. First report of Triatoma sordida Stål, 1859 (Hemiptera, Reduviidae, Triatominae) in the State of Acre and Brazilian Western Amazon. Rev Soc Bras Med Trop 2018. [DOI: 10.1590/0037-8682-0161-2017] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [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
Affiliation(s)
- Leandro José Ramos
- Universidade Federal do Acre, Brazil; Universidade Federal do Acre, Brazil
| | | | | | - Jader de Oliveira
- Universidade Estadual Paulista Júlio de Mesquita Filho, Brazil; Universidade Estadual Paulista Júlio de Mesquita Filho, Brazil
| | - João Aristeu da Rosa
- Universidade Estadual Paulista Júlio de Mesquita Filho, Brazil; Universidade Estadual Paulista Júlio de Mesquita Filho, Brazil
| | - Luis Marcelo Aranha Camargo
- Universidade de São Paulo, Brazil; Universidade Federal do Acre, Brazil; Faculdade São Lucas, Brazil; Centro de Pesquisas em Medicina Tropical, Brasil
| | - Renildo Moura da Cunha
- Universidade Federal do Acre, Brazil; Universidade Federal do Acre, Brazil; Universidade Federal do Acre, Brazil
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Damasceno JC, Isenberg J, Lopes LR, Hime B, Fernandes BF, Lowen M, Camargo LMA, Belfort RN. Largest case series of Latin American eyelid tumors over 13-Years from a single center in Sao Paulo, Brazil. Arq Bras Oftalmol 2018. [DOI: 10.5935/0004-2749.20180004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Meneguetti DUDO, Castro GVDS, Castro MALR, Souza JLD, Oliveira JD, Rosa JAD, Camargo LMA. First report of Rhodnius stali (Hemiptera, Reduviidae, Triatominae) in the State of Acre and in the Brazilian Amazon. Rev Soc Bras Med Trop 2017; 49:365-8. [PMID: 27384836 DOI: 10.1590/0037-8682-0066-2016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Accepted: 04/19/2016] [Indexed: 11/21/2022] Open
Abstract
INTRODUCTION This paper reports, for the first time, the presence of Rhodnius stali in the state of Acre and in the Brazilian Amazon. METHODS Specimens of R. stali were collected by the Federal University of Acre in Rio Branco. RESULTS The number of Triatominae species in the State of Acre increased from five to six. This was also the first report of R. stali in the Brazilian Amazon. CONCLUSIONS The occurrence of R. stali is worrisome, since this species has been found naturally infected by Trypanosoma cruzi and there has been evidence of its domiciliation capabilities.
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Affiliation(s)
- Dionatas Ulises de Oliveira Meneguetti
- Colégio de Aplicação, Universidade Federal do Acre, Rio Branco, Acre, Brasil.,Programa de Pós Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, Acre, 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, Acre, Brasil
| | | | - Janis Lunier de Souza
- Programa de Pós Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, Acre, Brasil
| | - Jader de Oliveira
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, São Paulo, Brasil.,Programa de Pós Graduação Stricto Sensu em Biociências e Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, São Paulo, Brasil
| | - João Aristeu da Rosa
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, São Paulo, Brasil.,Programa de Pós Graduação Stricto Sensu em Biociências e Biotecnologia, Universidade Estadual Paulista Júlio de Mesquita Filho, Araraquara, São Paulo, Brasil
| | - Luis Marcelo Aranha Camargo
- Programa de Pós Graduação Stricto Sensu em Ciência da Saúde na Amazônia Ocidental, Universidade Federal do Acre, Rio Branco, Acre, Brasil.,Instituto de Ciências Biomédicas-5, Universidade de São Paulo, Monte Negro, Rondônia, Brasil.,Departamento de Medicina, Faculdade São Lucas, Porto Velho, Rondônia, Brasil
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Ogawa GM, Pereira Júnior AM, Resadore F, Ferreira RDGM, Medeiros JF, Camargo LMA. Sandfly fauna (Diptera: Psychodidae) from caves in the state of Rondônia, Brazil. ACTA ACUST UNITED AC 2016; 25:61-8. [PMID: 27007243 DOI: 10.1590/s1984-29612016017] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 02/11/2016] [Indexed: 02/05/2023]
Abstract
This study had the aim of ascertaining the sandfly fauna and possible presence of Leishmania in these insects, collected in caves in the state of Rondônia, Brazil. Collections were conducted in eight caves located in two different areas of this state. Leishmania in the sandflies collected was detected using the polymerase chain reaction (PCR). This was the first study on sandflies from caves in Rondônia and, among the total of 1,236 individuals collected, 24 species and 10 genera were identified. The species Evandromyia georgii was collected for the first time in Rondônia and the most abundant species were Trichophoromyia ubiquitalis with 448 individuals (36.2%), followed by T. octavioi with 283 (22.9%) and E. georgii with 179 (14.5%). For the PCR, 17 pools were analyzed and five pools were positive (forT. auraensis in three pools and for Nyssomyia shawi and N. antunesi in one pool each). The kDNA region was amplified and the presence of Leishmania DNA was confirmed. The sandfly fauna in these caves can be considered diverse in comparison with similar studies in other regions. It may be that some species use caves as a temporary shelter and breeding site, while other species live exclusively in this environment. The detection of Leishmania DNA indicates that this pathogen is circulating in cave environments and that further studies are needed in order to ascertain the risks of infection by leishmaniasis in these locations with high touristic potential.
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Ito MM, Catanhêde LM, Katsuragawa TH, Silva Junior CFD, Camargo LMA, Mattos RDG, Vilallobos-Salcedo JM. Correlation between presence of Leishmania RNA virus 1 and clinical characteristics of nasal mucosal leishmaniosis. Braz J Otorhinolaryngol 2015; 81:533-40. [PMID: 26277588 PMCID: PMC9449032 DOI: 10.1016/j.bjorl.2015.07.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [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: 07/21/2014] [Accepted: 09/23/2014] [Indexed: 11/24/2022] Open
Abstract
Introduction Mucosal leishmaniosis (ML) is a severe clinical form of leishmaniosis. Complex factors related to the parasite and the host are attributed to the development of mucosal lesions. Leishmania RNA virus 1 (LRV1) can disrupt immune response, and may be the main determinant of severity of the disease; it should be investigated. Objective To study the existence of clinical differences between patients with ML with endosymbiosis by LRV1 and. those without it. Methods A cross-sectional cohort study with clinical evaluation, polymerase chain reaction (PCR) detection of Leishmania, species classification, and search of LRV1 was performed. Only patients with confirmed diagnosis of ML by positive PCR and with nasal mucosa injuries were included in this analysis. Results Out of 37 patients, 30 (81.1%) were diagnosed with Leishmania braziliensis, five (13.5%) with Leishmania guyanensis, and two (5.4%) with mixed infection of L. braziliensis and L. guyanensis. LVR1 virus was present in 26 (70.3%) of the cases. Conclusion Correlation between clinical phenotype and presence of LRV1 was not observed, although the frequency of the virus is two-fold higher in mucosal lesions than that found in the literature on skin lesions in the same geographical area.
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Affiliation(s)
- Marcos Massayuki Ito
- Health Science, Universidade Federal de Rondônia (UNIR), Porto Velho, RO, Brazil.
| | | | | | | | | | | | - Juan Miguel Vilallobos-Salcedo
- Fundação Osvaldo Cruz (FIOCRUZ), Porto Velho, RO, Brazil; Universidade Federal de Rondônia (UNIR), Porto Velho, RO, Brazil; Universidade de São Paulo (USP), São Paulo, SP, Brazil
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Meneguetti DUDO, Tojal SD, Miranda PRMD, Rosa JAD, Camargo LMA. First report of Rhodnius montenegrensis (Hemiptera, Reduviidae, Triatominae) in the State of Acre, Brazil. Rev Soc Bras Med Trop 2015; 48:471-3. [PMID: 26132496 DOI: 10.1590/0037-8682-0029-2015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 04/13/2015] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION This paper reports, for the first time, the presence of Rhodnius montenegrensis in the State of Acre, Brazil. METHODS Two female R. montenegrensis were collected in a dwelling in the rural area of Rio Branco, Acre, Brazil. RESULTS The occurrence of this species was confirmed, and the number of Triatominae species in the State of Acre increased from four to five. CONCLUSIONS Further studies should be performed to reach a clearer understanding of the ecology of this arthropod, its possible role in transmitting Chagas' disease and rangeliosis, and its current geographical distribution in the region.
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Affiliation(s)
| | | | | | - João Aristeu da Rosa
- Departamento de Ciências Biológicas, Faculdade de Ciências Farmacêuticas, Universidade Estadual Paulista, Araraquara, São Paulo, BR
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Soares HS, Camargo LMA, Gennari SM, Labruna MB. Survey of canine tick-borne diseases in Lábrea, Brazilian Amazon: ‘accidental’ findings of Dirofilaria immitis infection. Rev Bras Parasitol Vet 2014; 23:473-80. [DOI: 10.1590/s1984-29612014093] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 07/25/2014] [Indexed: 11/21/2022]
Abstract
Blood samples were collected from 99 domestic dogs from the urban and rural areas of the Lábrea municipality, state of Amazonas, Brazil. Canine serum samples were tested by immunofluorescence assay against Rickettsia spp., which revealed that only 3.0% (1/33) and 7.6% (5/66) of the dogs from urban and rural areas, respectively, reacted positively to at least one Rickettsia species. DNA was extracted from canine blood and tested by a battery of PCR assays targeting protozoa of the genera Babesia and Hepatozoon, and bacteria of the genera Rickettsia and Ehrlichia and family Anaplasmataceae. All samples were negative in the PCR assays targeting the genera Babesia, Hepatozoon, Ehrlichia and Rickettsia. For Anaplasmataceae, 3% (1/33) and 39.4% (26/66) of the urban and rural dogs, respectively, yielded amplicons that generated DNA sequences 100% identical to the corresponding sequence of Wolbachia endosymbiont of Dirofilaria immitis. Because of these results, all canine DNA samples were further tested in a PCR assay targeting filarial nematodes, which was positive for 18.2% (6/33) and 57.6% (38/66) urban and rural dogs, respectively. Filarial-PCR products generated DNA sequences 100% identical to D. immitis. While tick-borne infections were rare in Lábrea, D. immitis infection rates were among the highest reported in South America.
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Meneguetti DUDO, Soares EB, Campaner M, Camargo LMA. First report of Rhodnius montenegrensis (Hemiptera: Reduviidae: Triatominae) infection by Trypanosoma rangeli. Rev Soc Bras Med Trop 2014; 47:374-6. [DOI: 10.1590/0037-8682-0179-2013] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2013] [Accepted: 11/27/2013] [Indexed: 11/22/2022] Open
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Medeiros JF, Pessoa FAC, Camargo LMA. MANSONELLIASIS: A BRAZILIAN NEGLECTED DISEASE. Rev Patol Trop 2014. [DOI: 10.5216/rpt.v43i1.29365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Meneguetti DUDO, Laray MPDO, Camargo LMA. Primeiro relato de larvas de Eustrongylides sp. (Nematoda: Dioctophymatidae) em Hoplias malabaricus (Characiformes: Erythrinidae) no Estado de Rondônia, Amazônia Ocidental, Brasil. ACTA ACUST UNITED AC 2013. [DOI: 10.5123/s2176-62232013000300008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Bevilacqua MC, Banhara MR, de Oliveira AN, Moret ALM, Alvarenga KDF, Caldana MDL, Camargo LMA, Costa OA, Bastos JRDM. Survey of hearing disorders in an urban population in Rondonia, Northern Brazil. Rev Saude Publica 2013; 47:309-15. [DOI: 10.1590/s0034-8910.2013047004059] [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: 12/16/2011] [Accepted: 08/21/2012] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE: To identify the prevalence of hearing loss for the population in the urban area. METHODS: A cross-sectional household survey based on the World Health Organization Ear and Hearing Disorders Survey Protocol was conducted in 298 households in the urban area of Monte Negro, Rondonia, Northern Brazil, from 2005 to 2007. Ear examinations, behavioral audiometry and pure tone audiometry were conducted on 577 individuals. RESULTS: The results showed that 3.8% (95%CI 2.17;5.45) of population were classified in the disabling hearing impairment category. The prevalence of moderate hearing impairment was 3.4%; severe impairment was 0.4%; and profound hearing impairment was not found. CONCLUSIONS: The impairing hearing loss prevalence found in this study is within of the international prevalence for this level of hearing loss and smaller than observed in a previous study in the South region of Brazil.
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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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Bezerra WS, Meneguetti DUDO, Camargo LMA. A Busca de fármacos para tratamento da Tripanossomíase Americana: 103 anos de negligência. ACTA ACUST UNITED AC 2012. [DOI: 10.5902/223658344813] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Passos RM, Barbosa CP, Almeida JDS, Ogawa GM, Camargo LMA. Subconjunctival Loa loa worm: first case report in Brazil. Arq Bras Oftalmol 2012; 75:67-70. [PMID: 22552423 DOI: 10.1590/s0004-27492012000100015] [Citation(s) in RCA: 4] [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: 02/11/2011] [Accepted: 09/14/2011] [Indexed: 11/22/2022] Open
Abstract
We report the first case of ocular infestation by Loa loa in Brazil. Loiasis is caused by infestation with Loa loa, a filarial parasite originally found in the rainforests of western and central Africa. It is transmitted by the bite of the fly Chrysops and has been recently described in other places other than Africa, in African immigrants or travellers. Our case is a 33 year-old woman from Cameroon who was living in São Paulo, Brazil, for 5 years. She was asymptomatic until one morning she started feeling "something moving" in the left eye. Under topical anesthesia, on the slit lamp, a moving worm was removed from the subconjunctival space, which later was confirmed to be a male Loa loa adult specimen. Blood tests revealed microfilaraemia of 129 mf/mL. The patient was treated with 400 mg oral albendazole for 3 weeks and 60 mg prednisone. This report illustrates an unusual ocular disease, which is extremely rare outside of Africa, but easily diagnosed and treated. Ophthalmologists should be aware of it, in face of an increasingly globalized world.
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Gil LHS, Araújo MDS, Villalobos JM, Camargo LMA, Ozaki LS, Fontes CJF, Ribolla PEM, Katsuragawa TH, Cruz RM, Silva ADAE, Silva LHPD. Species structure of sand fly (Diptera: Psychodidae) fauna in the Brazilian western Amazon. Mem Inst Oswaldo Cruz 2010; 104:955-9. [PMID: 20027459 DOI: 10.1590/s0074-02762009000700002] [Citation(s) in RCA: 13] [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: 02/23/2009] [Accepted: 10/07/2009] [Indexed: 11/21/2022] Open
Abstract
We surveyed areas of the state of Rondônia in western Amazon for phlebotomine, which are potential vectors of leishmaniasis. A total of 5,998 specimens were captured, resulting in the identification of 48 species within the Lutzomyia (99.98%) and Brumptomyia (0.02%) genera. The predominant species was Lutzomyia davisi, followed by Lutzomyia umbratilis, Lutzomyia llanosmartinsi, Lutzomyia c. carrerai, Lutzomyia dendrophyla, Lutzomyia nevesi and Lutzomyia whitmani. All sand flies identified as vectors for cutaneous leishmaniasis in Brazil, i.e., Lu. davisi, Lu. umbratilis, Lu. c. carrerai and Lu. whitmani, were found in the surveyed areas.
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Camargo LMA, de Souza Almeida Aranha Camargo J, Vera LJDS, di Tarique Crispim Barreto P, Tourinho EK, de Souza MM. Capillariaisis (Trichurida, Trichinellidae, Capillaria hepatica) in the Brazilian Amazon: low pathogenicity, low infectivity and a novel mode of transmission. Parasit Vectors 2010; 3:11. [PMID: 20187941 PMCID: PMC2851585 DOI: 10.1186/1756-3305-3-11] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.2] [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: 12/01/2009] [Accepted: 02/26/2010] [Indexed: 11/13/2022] Open
Abstract
Background Human capillariasis caused by Capillaria hepatica (syn. Calodium hepaticum) is a rare disease with no more than 40 cases registered around the world. Classically, the disease has severe symptoms that mimic acute hepatitis. Natural reservoirs of C. hepatica are urban rodents (Mus musculus and Rattus novergicus) that harbor their eggs in the liver. After examining the feces of 6 riverine inhabitants (Rio Preto area, 8° 03'S and 62° 53' W to 8° 14'S and 62° 52'W) of the State of Rondonia, Brazil, and identifying C. hepatica eggs in their feces, the authors decided to investigate the real dimension of these findings by looking for two positive signals. Methods Between June 1st and 15th, 2008, 246 out of 304 individuals were clinically examined. Blood samples were collected, kept under -20°C, and test by the indirect immunofluorescence technique. Results The first positive signal was the presence of specific antibodies at 1:150 dilution, which indicates that the person is likely to have been exposed to eggs, most likely non-infective eggs, passing through the food chain or via contaminated food (total prevalence of 34.1%). A second more specific signal was the presence of antibodies at higher titers, thus indicating true infection. Conclusions The authors concluded that only two subjects were really infected (prevalence of 0.81%); the rest was false-positives that were sensitized after consuming non-embryonated eggs. The present study is the first one carried out in a native Amazonian population and indicates the presence of antibodies against C. hepatica in this population. The results further suggest that the transmission of the parasite occurs by the ingestion of embryonated eggs from human feces and/or carcasses of wild animals. The authors propose a novel mode of transmission, describing the disease as a low pathogenic one, and showing low infectivity.
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Abstract
Previous population dynamics data, generated for Amblyomma parvum Aragão and Amblyomma cajennense (Fabricius) in Argentina and southeastern Brazil, have indicated that these ticks complete 1 generation per year, with larvae predominating in autumn, nymphs in winter, and mostly adults during spring and summer. The present study reports population dynamics data for free-living Amblyomma spp. ticks in northern Brazil (Amazon forest, latitude 10 degrees S, 63 degrees W), and for Amblyomma spp. ticks collected on birds in southeastern Brazil (latitude 23 degrees S, 45 degrees W). In northern Brazil, adult ticks predominated from mid-spring to mid-autumn, larvae predominated in early winter, and nymphs from mid-winter to mid-spring. Seven Amblyomma spp. were identified, although A. cajennense predominated in 1 of the 2 sites sampled. In southeastern Brazil, larval infestations on birds peaked in autumn, followed by a nymphal infestation peak in late winter. At least 32% and 75% of these larvae and nymphs, respectively, were identified as Amblyomma longirostre (Koch). Similar to previous work, the present study showed that Amblyomma spp. larvae and nymphs predominated during autumn-winter months, and mostly adults during spring-summer months, a pattern compatible with 1 generation/yr, even at latitude 10 degrees S in northern Brazil.
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Affiliation(s)
- M B Labruna
- Department of Preventive Veterinary Medicine and Animal Health, Faculty of Veterinary Medicine, University of São Paulo, São Paulo, 05508-270, Brazil.
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Silva RHAD, Castro RFMD, Cunha DCS, Almeida CTD, Bastos JRDM, Camargo LMA. Cárie dentária em população ribeirinha do Estado de Rondônia, Região Amazônica, Brasil, 2005/2006. CAD SAUDE PUBLICA 2008; 24:2347-53. [DOI: 10.1590/s0102-311x2008001000015] [Citation(s) in RCA: 8] [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: 08/27/2007] [Accepted: 02/25/2008] [Indexed: 11/22/2022] Open
Abstract
O objetivo foi analisar experiência de cárie dentária na população ribeirinha residente às margens dos rios Machado e Preto (Rondônia, Brasil), em 2005 e 2006. Foram examinados 469 indivíduos com formulário preconizado pela Organização Mundial da Saúde, sob luz natural e utilização de espátulas de madeira e sonda CPI. Na faixa etária de 4-5 anos de idade, ceod = 4,30 e 19,64% livres de cárie; 6-10 anos, CPOD = 1,04, ceod = 3,52, 17,05% livres de cárie; aos 12 anos, CPOD = 2,65 e 30,76% livres de cárie; aos 18 anos, CPOD = 5,41 e 19,51% livres de cárie; 35-44 anos, CPOD = 17,74 e 2,98% livres de cárie; 65-74 anos, CPOD = 21,56 e 4,34% livres de cárie. Na análise por componentes, constatou-se que o componente cariado tem maior prevalência nas idades de 0-3, 4-5, 6-10, 12 e 18 anos. Em adultos e idosos, o componente que mais contribui é o perdido. Conclui-se que a população apresenta índices de cárie dentária elevados, sendo necessária a atuação em âmbito educativo, preventivo e curativo.
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Aguiar DM, Cavalcante GT, Lara MDCCDSH, Villalobos EMC, Cunha EMS, Okuda LH, Stéfano ED, Nassar AFDC, Souza GO, Vasconcellos SA, Labruna MB, Camargo LMA, Gennari SM. Prevalência de anticorpos contra agentes virais e bacterianos em eqüídeos do Município de Monte Negro, Rondônia, Amazônia Ocidental Brasileira: Brazilian Western Amazon. Braz J Vet Res Anim Sci 2008. [DOI: 10.11606/issn.1678-4456.bjvras.2008.26685] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [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
Foram examinados 176 eqüídeos (15 muares e 161 eqüinos) do município de Monte Negro, Rondônia, Amazônia Ocidental Brasileira, frente a agentes virais e bacterianos. A amostra correspondeu ao total de eqüídeos no município, considerando um nível de confiança de 99%, prevalência esperada de 50% e erro padrão de 10%. As infecções virais foram investigadas pelas provas de Imunodifusão em gel de Agar (Anemia Infecciosa Eqüina - AIE), Inibição da hemaglutinação (Influenza eqüina tipos 1 e 2 IE-1 e 2) e Soroneutralização em cultura celular (Arterite Viral Eqüina - AVE, Herpesvírus Eqüino tipo 1 HVE1, Estomatite Vesicular - EV e Encefalomielite Eqüina do Leste - EEE, do Oeste - WEE e Venezuela - VEE). Para o diagnóstico da leptospirose, foi utilizada a prova de Soroaglutinação Microscópica (SAM); para o diagnóstico da brucelose, o teste do Antígeno Acidificado Tamponado (AAT) foi utilizado como teste de triagem e as provas de Soroaglutinação Lenta em Tubos (SLT) e 2-mercaptoetanol como testes diagnósticos. Foram constatados 9,6% dos eqüídeos reativos para AIE, 22,7% para HVE1, 19,9% para IE-1, 42,0% para IE-2, 21,0% para EEE, 11,3% para VEE, 3,4% para Brucella spp. e 91,4% para Leptospira spp. Os sorovares de leptospira mais freqüentes foram Bratislava (10,5%), Icterohaemorrhagiae (8,7%) e Autumnalis (8,7%) nos eqüinos e Patoc (26,6%) nos muares. Não foram encontrados animais com anticorpos contra AVE, EV e WEE.
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Basano SA, Bianco A, Taylor WRJ, Olliaro P, Camargo LMA. An in vivo test to assess mefloquine 25 mg/kg for the treatment of uncomplicated falciparum malaria in Rondônia, Brazil. Braz J Infect Dis 2008; 10:279-82. [PMID: 17293912 DOI: 10.1590/s1413-86702006000400013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 04/23/2006] [Indexed: 11/22/2022] Open
Abstract
Drug-resistant Plasmodium falciparum is undermining malaria control efforts worldwide. In Brazil, mefloquine (MQ) at a dose of 15 mg/kg body weight is used to treat P. falciparum. At this dose, MQ resistance developed rapidly in Thailand. Use of a higher MQ dose may retard the development of resistance. We treated 50 patients aged one to 67 years who had acute, uncomplicated P falciparum malaria using MQ 25 mg/kg. There were no serious adverse events. Two patients complained of dizziness and insomnia. Assessing evaluable patients, the day 42 cure rate was 40/42 [95.2% (95% confidence interval 83.8 to 99.4%)]. Mefloquine was efficacious and well tolerated in this small cohort from the state of Rôndonia.
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Affiliation(s)
- S A Basano
- Advanced Research Unit of the University of São Paulo in Rondônia, Rondônia, Brazil
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Abstract
A doença de Chagas tem como agente etiológico o Trypanossoma cruzi, um protozoário flagelado que pode ser encontrado numa grande variedade de mamíferos e triatomíneos. O Estado de Rondônia, localizado na Amazônia Ocidental, possui um meio ambiente constantemente modificado pelas ações transformadoras do ser humano, resultando em um desequilíbrio, que pode facilitar a transmissão de inúmeros patógenos. Uma grande variedade e quantidade de palmáceas, em especial o babaçu, bem como mamíferos e triatomíneos, podem ser encontrados neste complexo ecossistema. Nesta pesquisa, a fauna de triatomíneos foi identificada em 225 babaçus e por meio de capturas peri e intradomiciliares. Foi realizado, concomitantemente, estudo de soroprevalência para doença de Chagas e a identificação da presença de T.cruzi no trato digestivo dos triatomíneos. Positividade ao T. cruzi foi verificada em 23,7% dos 652 triatomíneos coletados nos babaçus. Estes triatomíneos pertenciam ao gênero Rhodnius e foram classificados em 4 espécies: R. robustus, R. prolixus, R. pictipes e R. milesi. Nas capturas intradomiciliares, dez espécimes do Rhodnius robustus e uma de Panstrongylus geniculattus foram encontrados, sendo que 3% da população foi positiva para doença de Chagas. Na área pesquisada, há potencial de transmissão da doença de Chagas na forma endêmica devido a grande quantidade de triatomíneos, bem como alta freqüência de infecção destes triatomíneos, porém no momento deste estudo não se evidenciou a ocorrência da transmissão.
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Cavalcante GT, Aguiar DM, Chiebao D, Dubey JP, Ruiz VLA, Dias RA, Camargo LMA, Labruna MB, Gennari SM. Seroprevalence of Toxoplasma gondii Antibodies in Cats and Pigs From Rural Western Amazon, Brazil. J Parasitol 2006; 92:863-4. [PMID: 16995406 DOI: 10.1645/ge-830r.1] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Antibodies to Toxoplasma gondii were assayed in sera of 63 cats and 80 pigs from 71 farms located at Rondônia State, Western Amazon, Brazil, by the modified agglutination test (MAT) and the indirect immunofluorescent antibody test (IFAT). Antibodies (MAT > or = 1: 25) were found in 55 of 63 cats (87.3%) with titers of 1:25 in 2, 1:50 in 2, 1:100 in 7, 1:200 in 1, 1:400 in 2, 1:800 in 9, 1:1,600 in 6, and 1:3,200 or higher in 26 cats. By IFAT, antibodies were found in 55 cats (87.3%) with titers of 1:25 in 2, 1:50 in 1, 1:100 in 4, 1:200 in 4, 1: 400 in 1, 1:800 in 13, 1:1,600 in 12, and 1:3,200 or higher in 18 cats. In pig sera, by MAT, antibodies were found in 30 of 80 pigs (37.5%) with titers of 1:25 in 2, 1:50 in 3, 1:100 in 2, 1:200 in 8, 1:400 in 3, 1:800 in 5, 1:1,600 in 3, and 1:3,200 or higher in 4 pigs. By using the IFAT (titers > or = 1:64), antibodies were found in 35 (43.7%) pigs. The ingestion of undercooked tissues of infected pigs can be a source of T. gondii infection for humans and cats. However, the high seroprevalence of T. gondii in cats from the Amazon seems most likely to be indicative of high contamination of the environment by oocysts.
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Affiliation(s)
- G T Cavalcante
- Núcleo Avançado de Pesquisas, Departamento de Parasitologia, Instituto de Ciências Biomédicas V, Universidade de São Paulo, Rua Francisco Prestes 1234, Monte Negro-Rondônia, CEP 78965-000, Brazil
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Cavalcante GT, Aguilar DM, Camargo LMA, Labruna MB, de Andrade HF, Meireles LR, Dubey JP, Thulliez P, Dias RA, Gennari SM. Seroprevalence of Toxoplasma gondii Antibodies in Humans From Rural Western Amazon, Brazil. J Parasitol 2006; 92:647-9. [PMID: 16884015 DOI: 10.1645/ge-774r.1] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Antibodies to Toxoplasma gondii were assayed in sera of 266 humans from 71 farms located at Rondônia State, Western Amazon, Brazil, by the modified agglutination test (MAT) and the indirect immunofluorescent antibody test (IFAT). Antibodies were found in 195 humans (73.3%), with MAT titers of 1:25 in 11, 1:50 in 11, 1:100 in 16, 1:200 in 27, 1:400 in 38, 1:800 in 37, 1:1,600 in 22, and 1:3,200 or higher in 33. From the 71 farms visited, 69 had seropositive humans. Prevalence of anti-T. gondii antibodies increased with age of the people (P < 0.05), and no difference was observed in the occurrence by gender (P > 0.05). A sanitary questionnaire was applied in each farm, and statistical association between the serologic status and several variables were analyzed. Home-grown vegetable consumption and origin of drinking water (well or river) were the independent variables that displayed significant association (P = 0.002 and 0.02, respectively). Higher values of occurrence were found in people with consumption of home-grown vegetables (76.1%) and people that drink well water (75.4%) compared with people that did not consume this type of food (61.9%) and drink river water (55.2%). By IFAT (> or = 1:16), 194 of 266 (73%) humans were seropositive and there was a good correlation between MAT and IFAT.
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Affiliation(s)
- G T Cavalcante
- Núcleo Avançado de Pesquisas, Departamento de Parasitologia, Instituto de Ciências Biomédicas V, Universidade de São Paulo, Monte Negro-Rondônia, Brazil
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El Khouri M, Duarte LS, Ribeiro RB, da Silva LFF, Camargo LMA, dos Santos VA, Burattini MN, Corbett CEP. Seroprevalence of hepatitis B virus and hepatitis C virus in Monte Negro in the Brazilian western Amazon region. Clinics (Sao Paulo) 2005; 60:29-36. [PMID: 15838578 DOI: 10.1590/s1807-59322005000100007] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PURPOSE This study was carried out in Monte Negro (state of Rondônia), a village in the Brazilian western Amazon region, where a University of São Paulo Medical School program for medical student training in rural assistance took place. It aimed to determine the prevalence of hepatitis B virus and hepatitis C virus, to investigate risk factors for infection, and to evaluate the State immunization program against hepatitis B virus in the region. METHODS The study is a cross-sectional seroprevalence survey, comprising 267 volunteers who answered a comprehensive questionnaire and had blood samples collected, which were analyzed in São Paulo for the presence of antibodies against hepatitis B virus (Hbs Ag, anti-Hbs, and anti-Hbc) and hepatitis C virus using commercial kits. Data were stored in a specific data bank, and the association between seropositivity and potential risk factors was analyzed by means of uni-, bi-, and multi-variate analysis, considering +/- 5%. RESULTS The seroprevalence of hepatitis B virus was 61.79% and of hepatitis C virus was 0.38%. Statistical analysis on the data bank showed that the prevalence of hepatitis B virus rose significantly with age, especially after adolescence. Infection was higher in those coming from outside the state of Rondônia. Exposure to vaccination against hepatitis B virus was higher in younger individuals and in those who were born in Rondônia. CONCLUSION Monte Negro is a highly endemic region for hepatitis B virus but not for hepatitis C virus. Our results also provide indirect evidence indicating a significant improvement in the immunization program in Rondônia in recent years.
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Affiliation(s)
- Marcelo El Khouri
- Laboratory of Infectious Disease and Central Laboratory Division, Hospital das Clínicas, Faculty of Medicine, University of São Paulo, São Paulo, SP, Brazil
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Cañón-Franco WA, Bergamaschi DP, Labruna MB, Camargo LMA, Silva JCR, Pinter A, Gennari SM. Occurrence of Anti-Toxoplasma gondii Antibodies in Dogs in the Urban Area of Monte Negro, Rondônia, Brazil. Vet Res Commun 2004; 28:113-8. [PMID: 14992241 DOI: 10.1023/b:verc.0000012114.71235.73] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The prevalence of anti-Toxoplasma gondii antibodies in dogs in an urban area of the municipality of Monte Negro, Rondônia, Brazil, was evaluated using an indirect immunofluorescent antibody test (IFAT). Blood samples were taken from 157 dogs living in 85 of the 94 blocks of the city. A seropositivity of 76.4% (120/157) was found and associations between the prevalence and the variables sex, age, type of raising and food were studied. The prevalence tended to increase with age (p < 0.05); dogs over 24 months old had 85.5% (100/117) positivity, compared with 50% (20/40) in dogs less than 24 months old, showing postnatal exposure to the agent. It was also observed that dogs with access to the streets showed greater prevalence (84.9%) than companion animals (58.8%). There was no association between sex or the type of food (home-made or commercial) and anti-T. gondii antibodies.
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Affiliation(s)
- W A Cañón-Franco
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, Avenida Prof. Orlando Marques de Paiva 87, Cidade Universitária, São Paulo, SP, CEP 05508 000, Brazil
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Cañón-Franco WA, Bergamaschi DP, Labruna MB, Camargo LMA, Souza SLP, Silva JCR, Pinter A, Dubey JP, Gennari SM. Prevalence of antibodies to Neospora caninum in dogs from Amazon, Brazil. Vet Parasitol 2003; 115:71-4. [PMID: 12860070 DOI: 10.1016/s0304-4017(03)00131-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Neospora caninum is an important cause of abortion in dairy cattle worldwide. Dogs are important in the epidemiology of this parasite because they are the only hosts known to excrete N. caninum oocysts. Antibodies to N. caninum were assayed in serum samples from 157 dogs from Monte Negro, Rondônia, Amazon, Brazil using the indirect fluorescent antibody test. Antibodies to N. caninum were found in 13 (8.3%) of dogs in titers of 1:50 in 1, 1:100 in 2, 1:200 in 5, 1:800 in 1, 1:1600 in 2, and 1:3200 in 2 dogs. These data indicate that N. caninum infection is prevalent even in remote areas of the Amazon.
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Affiliation(s)
- W A Cañón-Franco
- Faculdade de Medicina Veterinária e Zootecnia, Departamento de Medicina Veterinária Preventive e Saúde Animal, Universidade de São Paulo (USP), Avenida Prof. Orlando Marques de Paiva 87, Cidade Universitária, São Paulo, SP, CEP 05508-000, Brazil
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Almeida Cunha RP, Alves FP, Rocha AMC, Rocha GA, Camargo LMA, Nogueira POP, Camargo EP, Queiroz DMM. Prevalence and risk factors associated with Helicobacter pylori infection in native populations from Brazilian Western Amazon. Trans R Soc Trop Med Hyg 2003; 97:382-6. [PMID: 15259462 DOI: 10.1016/s0035-9203(03)90063-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
We evaluated the prevalence of, and factors associated with, Helicobacter pylori infection in 222 subjects from 3 distinct communities of native populations (Uru-Eu-Wau-Wau Indians and 2 riverine communities living on the banks of the Machado river and in Portuchuelo) living in isolation in the rainforest of Brazilian Western Amazon. The overall prevalence was 78.8% (95% CI 72.7-83.9). The prevalence was higher in the Machado river community compared with Portuchuelo (chi2 = 3.84, P = 0.05), but no significant difference was observed between the Machado river community and the Uru-Eu-Wau-Wau Indians. Logistic regression showed that residential crowding and age were factors associated with the presence of H. pylori infection. Acquisition of the bacterium started early in life and by the age of 2 years 50% of children were infected. The prevalence increased with age, reaching near universal levels during adulthood (97.9%). Residential crowding was high with a global index of 3.3 persons/room (SD = 1.8), varying significantly between the 3 communities (P = 0.001). These data provide further evidence supporting direct person-to-person spread of the bacterium.
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Affiliation(s)
- R P Almeida Cunha
- Center for Research in Tropical Medicine, Br 364, km 3,5 Porto Velho, Rondônia, CEP 78900-000, Brazil
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Abstract
During a survey of ticks on horses in November 2000, at the University of São Paulo farm in Pirassununga county, São Paulo, Brazil, 1 gynandromorph of Amblyomma cajennense was collected from a naturally infested horse. In another survey on dogs in March 2001, in the urban area of Monte Negro, Rondônia, Brazil, a gynandromorph of Rhipicephalus sanguineus was collected from a naturally infested dog. Both specimens are described and classified as perfect bipartite protogynanders.
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Affiliation(s)
- M B Labruna
- Departamento de Medicina Veterinária Preventiva e Saúde Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, São Paulo, SP, 05508-000, Brazil.
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Ferreira RGM, Moura MM, Engracia V, Pagotto RC, Alves FP, Camargo LMA, Silva LHP, Camargo EP, Beiguelman B, Krieger H. Ethnic admixture composition of two western Amazonian populations. Hum Biol 2002; 74:607-14. [PMID: 12371686 DOI: 10.1353/hub.2002.0041] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A small riverine community, Portuchuelo (8 degrees 37'S, 63 degrees 49'W), and a rural county, Monte Negro (10 degrees 15'S, 63 degrees 18'W), both in the state of Rondĵnia, Brazil, were studied for the purposes of ascertaining health conditions and the causes of the variability of some infectious diseases. The sample included 181 inhabitants of Portuchuelo and 924 of Monte Negro. Data on 11 blood polymorphisms (ABO, Rh, MNSs, Kell, Fy, haptoglobin, hemoglobin, ACP1, PGM1, GLO1, and CA2) were used to determine the ethnic composition of the inhabitants of Portuchuelo and Monte Negro. The contributions of Africans, Amerindians, and Europeans to the ethnic composition of the studied populations were, respectively, 0.21 +/- 0.046, 0.44 +/- 0.064, and 0.35 +/- 0.069 in Portuchuelo; and 0.25 +/- 0.032,0.12 +/- 0.046, and 0.63 +/- 0.054 in Monte Negro.
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Affiliation(s)
- R G M Ferreira
- 'Departmento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, Brazil
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Camargo LMA, Moura MM, Engracia V, Pagotto RC, Basano SA, da Silva LHP, Camargo EP, Beiguelman B, Krieger H. A rural community in a Brazilian Western Amazonian Region: some demographic and epidemiological patterns. Mem Inst Oswaldo Cruz 2002; 97:193-5. [PMID: 12016441 DOI: 10.1590/s0074-02762002000200008] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Some demographic and epidemiological patterns of the rural population of Monte Negro, locality situated in the State of Rondônia (Brazil), Western Amazonia, are described based on a sample of 924 randomly selected individuals, approximately 10% of the whole population. The main features of this sample are (1) the illiteracy rates in the parental generation were 23% for fathers and 20% for mothers. Among children, this figure dropped to 6%; (2) housing in Monte Negro is characterized by being constructed with wood (92%), and also a floor (75%). Nevertheless, only 32% of these houses had electric energy; (3) the mean ages for the parental generation were 41.9 for males and 36.3 for females. These values for the offspring generation were 12.2 and 10.5, respectively; (4) the sex-ratio of the offspring generation was 1.32;(5) the bioassay of kinship was estimated as.033 for this long range migrant population; (6) the prevalence of some macrophage dependent infectious disease was conspicuously high; (7) the reported number of malarial episodes among males and females was statistically different, suggesting that malaria may be, in part, a "professional" disease; (8) the prevalence of serum-positive reactions against B-hepatitis is distressing. It has a strong age dependence and reaches 74% among adult males. Conversely, signs of active infection (AgHbs) rises to 16% among children.
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Affiliation(s)
- L M A Camargo
- Departamento de Parasitologia, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, SP, 05508-900, Brasil
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