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Abrahim CMM, Py-Daniel V, Luz SLB, Fraiji NA, Stefani MMA. Detection of Mansonella ozzardi
among blood donors from highly endemic interior cities of Amazonas state, northern Brazil. Transfusion 2018; 59:1044-1051. [DOI: 10.1111/trf.15101] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 10/22/2018] [Accepted: 10/25/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Claudia M. M. Abrahim
- HEMOAM, Departamento de Pesquisa; Fundação Hospitalar de Hematologia e Hemoterapia do Estado do Amazonas; Manaus Brasil
| | - Victor Py-Daniel
- Departamento de Zoologia; Universidade de Brasília, Instituto de Ciências Biológicas; Brasilia Brasil
| | - Sergio L. B. Luz
- Fundação Oswaldo Cruz; Instituto Leônidas e Maria Deane; Manaus Brasil
| | - Nelson A. Fraiji
- HEMOAM, Departamento de Pesquisa; Fundação Hospitalar de Hematologia e Hemoterapia do Estado do Amazonas; Manaus Brasil
| | - Mariane M. A. Stefani
- Departamento de Imunologia, Microbiologia; Patologia Geral e Parasitologia, Instituto de Patologia Tropical e Saúde Pública, IPTSP, Universidade Federal de Goiás UFG; Goiânia Brasil
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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] [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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3
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Mansonella ozzardi and its vectors in the New World: an update with emphasis on the current situation in Haiti. J Helminthol 2017; 92:655-661. [PMID: 29067894 DOI: 10.1017/s0022149x17000955] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Mansonella ozzardi (Nematoda: Onchocercidae) is a little studied filarial nematode. This human parasite, transmitted by two families of dipteran vectors, biting midges (most of them members of the genus Culicoides) and blackflies (genus Simulium), is endemic to the Neotropical regions of the New World. With a patchy geographical distribution from southern Mexico to north-western Argentina, human infection with M. ozzardi is highly prevalent in some of the Caribbean islands, along riverine communities in the Amazon Basin, and on both sides of the border between Bolivia and Argentina. Studies conducted in Haiti between 1974 and 1984 allowed the first complete description of the adult worm and permitted clarification of the taxonomic position of this filarial species. This paper reports the known geographical distribution of M. ozzardi in Neotropical regions of the Americas, and focuses on the current situation in Haiti where this filariasis remains a completely neglected public health problem.
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Lima NF, Veggiani Aybar CA, Dantur Juri MJ, Ferreira MU. Mansonella ozzardi: a neglected New World filarial nematode. Pathog Glob Health 2016; 110:97-107. [PMID: 27376501 PMCID: PMC4984955 DOI: 10.1080/20477724.2016.1190544] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
Abstract
Mansonella ozzardi (Nematoda: Onchocercidae) is an understudied filarial nematode, originally described by Patrick Manson in 1897, that can be transmitted by two families of dipteran vectors, biting midges (most of them members of the genus Culicoides) and black flies (genus Simulium). With a patchy geographic distribution from southern Mexico to northwestern Argentina, human infection with M. ozzardi is highly prevalent in some of the Caribbean islands, along riverine communities in the Amazon Basin, and on both sides of the border between Bolivia and Argentina. There is no clinical entity unequivocally associated with M. ozzardi infection, although fever, arthralgia, headache, cold lower extremities, and itchy cutaneous rashes are occasionally mentioned in case report series. More recently, ocular manifestations (especially keratitis) have been associated with mansonelliasis, opening an important area of investigation. Here, we briefly review the biology, epidemiology, pathogenesis, and clinical aspects of M. ozzardi infection and point to some existing knowledge gaps, aiming to stimulate a research agenda to help filling them.
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Affiliation(s)
- Nathália F. Lima
- Department de Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | | | | | - Marcelo U. Ferreira
- Department de Parasitology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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Prevalencia y factores asociados con la filariosis por Mansonella ozzardi en 2 comunidades periurbanas de Iquitos, 2009. INFECTIO 2015. [DOI: 10.1016/j.infect.2015.03.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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Raccurt CP, Brasseur P, Boncy J. Mansonelliasis, a neglected parasitic disease in Haiti. Mem Inst Oswaldo Cruz 2015; 109:709-11. [PMID: 25317697 PMCID: PMC4238760 DOI: 10.1590/0074-0276140107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Accepted: 07/01/2014] [Indexed: 11/25/2022] Open
Abstract
Reported in Haiti as early as 1923, Mansonella ozzardi is still a neglected disease
ignored by the health authorities of the country. This review is an update on the
geographic distribution of the coastal foci of mansonelliasis in Haiti, the
epidemiological profile and prevalence rates of microfilariae in people living in
endemic areas, the clinical impact of the parasite on health and the efficiency of
the transmission of the parasite among three Culicoides biting-midge species
identified as vectors in Haiti. Additionally, interest in establishing a treatment
programme to combat this parasite using a single dose of ivermectin is
emphasised.
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Affiliation(s)
| | - Philippe Brasseur
- Unité de Recherche sur les Maladie Infectieuses Tropicales Emergentes, Unité Mixte de Recherche 198, Institut de Recherche pour le Développement, Dakar, Sénégal
| | - Jacques Boncy
- Laboratoire National de Santé Publique, Port-au-Prince, Haïti
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