Publications by authors named "Rui A Freitas"

Phlebotomine sand flies are insects of medical importance, as they are vectors of viruses, bacteria and trypanosomatids of the genus Leishmania Ross, the causative agent of leishmaniasis (Forattini 1973). During the past 20 years approximately 500,000 cases of leishmaniasis have been reported in Brazil. Most of these cases were reported in the North and Northeast regions.

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In this study, we identified the phlebotomine sandfly vectors involved in the transmission of American Cutaneous Leishmaniasis (ACL) in Assis Brasil, Acre, Brazil, which is located on the Brazil-Peru-Bolivia frontier. The genotyping of Leishmania in phlebotomines was performed using polymerase chain reaction (PCR) and PCR-restriction fragment length polymorphism. A total of 6,850 sandflies comprising 67 species were captured by using CDC light traps in rural areas of the municipality.

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Objective: To investigate the role of contemporary minilaparoscopy (ML; 3 mm instruments and laparoscope) and to identify predictive factors for complications in a prospective multicenter series for renal and adrenal surgeries.

Materials And Methods: From July 2013 to December 2014, 110 patients from 6 laparoscopic Spanish centers were enrolled. A common database was used and data were collected in a prospective manner.

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Introduction: This work was carried out on the purpose of identifying the species of phlebotomine sandflies in the municipality of Monte Negro, state of Rondonia, Brazil, that may have been transmitting the American cutaneous leishmaniasis (ACL), and concisely describe epidemiological aspects of disease.

Methods: The epidemiologic and socioeconomical indicators were obtained from government institutions and the local Municipal Secretary of Health. Phlebotomine sandflies were captured using CDC light traps between July 2006 to July 2008.

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The non-flooded upland rainforest fragment in the Federal University of Amazonas Campus is considered one of the world's largest urban tropical woodland areas and Brazil's second largest one in an urban setting. It is located in the city of Manaus, State of Amazonas at 03° 04' 34″ S, 59° 57' 30″ W, in an area covering nearly 800 hectares. Forty-one (41) sand fly species belonging to genus Lutzomyia were found attaining a total of 4662 specimens collected.

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Groundbreaking studies of phlebotomine sand fly populations in Assis Brasil, State of Acre, Brazil, resulted in the collection of 13 new records of phlebotomine sand flies and one previously undescribed species. Lutzomyia naiffi sp. nov.

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In the present paper we describe the diversity of phlebotomine sandflies collected in three sandstone caves in the municipality of Presidente Figueiredo, state of Amazonas, Brazil. The phlebotomines were captured during 2006 with CDC light traps. Guano samples from inside the Gruta Refúgio do Maruaga were collected to investigate the presence of immature specimens.

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A male of Lutzomyia araracuarensis (Morales & Minter) and possibly six females of this same species were found in the northeastern area of Manacapuru county, Amazonas State. Samples were collected using light traps CDC, from April 2003 to June 2004.

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The presence of Lutzomyia conviti Ramirez Perez, Martins & Ramirez, previously found only in Venezuela and Colombia, is recorded for the first time in Brazil. Lutzomyia conviti is now added to the 229 species of Lutzomyia already registered in Brazil and to the 44 identified in São Gabriel da Cachoeira, Amazonas state. Both sexes of L.

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Introduction: In Brazil, the largest diversity of phlebotomines is found in the Amazon region, particularly in undisturbed terra-firma forest. However, the phlebotomine fauna in other ecosystems of this region is still not well known.

Methods: In order to investigate the phlebotomine fauna of another Amazon ecosystem, collections were made using CDC light traps in the campina/campinarana ecosystems in the periurban zone of the city of Manaus.

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Article Synopsis
  • The study identifies a new lineage of trypanosomes found in frogs and sand flies in the Brazilian Amazon, revealing their close ecological relationship.
  • Researchers compared DNA sequences from trypanosomes across multiple regions, supporting the existence of four major clades of anuran trypanosomes, particularly noting the distinction of exotic anuran sources in one clade.
  • This research highlights the significant role of sand flies as invertebrate hosts and potential vectors for these trypanosomes in the Amazon ecosystem.
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A new species of parthenogenetic, autogenic and apparently extremely endemic phlebotomine is described from a sandstone cave located in primary terra firme forest to the North of the city of Manaus. Specimens were collected in the aphotic zone of the Refúgio do Maruaga cave by light trap and reared from bat guano. The adult morphology suggests a closer relationship to some Old World Phlebotominae than to species of Lutzomyia França encountered in the surrounding rainforest, but it shares characteristics with the recently proposed Neotropical genera Edentomyia Galati, Deanemyia Galati and Oligodontomyia Galati.

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The genus Lutzomyia has great importance in the New World, with some species implicated in the transmission of causal agents of leishmaniases, bartonellosis and arboviruses. From April 2003 to June 2004 an investigation was undertaken on the richness and abundance of the sand fly fauna in the northeast area of Manacapuru county, Amazonas State. The captures were carried out, with 16 light traps CDC, in areas of forest known as terra firme along the highway Manuel Urbano.

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Forty-six species of Lutzomyia and one species of Brumptomyia were identified among 20,008 sand flies collected in central Amapá. L. squamiventris maripaensis, L.

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