Leishmania Guyanensis
Mostrando 1-12 de 50 artigos, teses e dissertações.
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1. Identification of Leishmania species by high-resolution DNA dissociation in cases of American cutaneous leishmaniasis,
Abstract Background American cutaneous leishmaniasis is an infectious dermatosis caused by protozoa of the genus Leishmania, which comprises a broad spectrum of clinical manifestations depending on the parasite species involved in the infections and the immunogenetic response of the host. The use of techniques for amplification of the parasites DNA based on
An. Bras. Dermatol.. Publicado em: 2020-08
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2. Molecular typing reveals the co-existence of two transmission cycles of American cutaneous leishmaniasis in the Andean Region of Venezuela with Lutzomyia migonei as the vector
BACKGROUND The transmission routes for American cutaneous leishmaniasis (ACL) are in flux, so studies examining its transmission in humans, mammalian hosts, and sand fly vectors are urgently needed. OBJECTIVES The aim of this work was understand the epidemiological cycles of Leishmania spp., which causes ACL in the Andean Region of Venezuela, by identifying
Mem. Inst. Oswaldo Cruz. Publicado em: 06/12/2018
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3. Molecular diagnosis of cutaneous leishmaniasis in an endemic area of Acre State in the Amazonian Region of Brazil
Abstract INTRODUCTION This study proposes to identify the Leishmania species found in the skin lesions of cutaneous leishmaniasis (CL) patients from Brasiléia municipality (Acre). METHODS Skin biopsy imprints or biopsy fragments were assayed via kDNA-PCR/RFLP and FRET-real-time PCR. RESULTS Of individuals with suspected CL, 18 were positive for Leishm
Rev. Soc. Bras. Med. Trop.. Publicado em: 2018-06
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4. Antiplasmodial and antileishmanial activities of compounds from Piper tuberculatum Jacq fruits
Abstract INTRODUCTION This study assessed the activity of compounds from Piper tuberculatum against Plasmodium falciparum and Leishmania guyanensis. METHODS The effects of compounds from P. tuberculatum fruits on P. falciparum and L. guyanensis promastigote growth in vitro were determined. Hemolytic action and cytotoxicity in HepG2 and J774 cells were m
Rev. Soc. Bras. Med. Trop.. Publicado em: 2018-06
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5. Lutzomyia umbratilis from an area south of the Negro River is refractory to in vitro interaction with Leishmania guyanensis
BACKGROUND Lutzomyia umbratilis, the vector for Leishmania guyanensis in northern South America, has been found naturally infected with L. guyanensis only in areas north of the Negro and Amazon rivers. While populations of this sand fly species are also found in areas south of these rivers, these populations have never been reported to be infected and/or tr
Mem. Inst. Oswaldo Cruz. Publicado em: 2018-03
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6. Atividade anti-leishmania de extratos de Libidibia ferrea: desenvolvimento de testes in vitro e in vivo
RESUMO O tratamento da leishmaniose cutânea (LC) é de difícil resultado, devido ao escasso número de fármacos capazes de eliminar completamente a forma intracelular do parasita. No presente estudo, objetivou-se avaliar: i) propriedades fitoquímicas dos extratos de Libidibia ferrea; ii) a atividade antileishmania de extratos de L. ferrea contra promasti
Acta Amaz.. Publicado em: 2017-12
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7. Phlebotomine sandfly (Diptera: Psychodidae) diversity and their Leishmania DNA in a hot spot of American Cutaneous Leishmaniasis human cases along the Brazilian border with Peru and Bolivia
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 polymorp
Mem. Inst. Oswaldo Cruz. Publicado em: 10/06/2016
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8. Correlação entre a presença de Leishmania RNA Vírus 1 e as características clínicas da leishmaniose de mucosa nasal
RESUMO Introdução: A leishmaniose de mucosa (LM) é uma forma clínica grave da leishmaniose. Fatores complexos ligados ao parasita e ao hospedeiro são atribuídos ao desenvolvimento das lesões de mucosa. Leishmania RNA Vírus 1 (LRV1) pode subverter a resposta imune, podendo ser o principal determinante da gravidade da doença e deve ser pesquisado. O
Braz. j. otorhinolaryngol.. Publicado em: 2015-10
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9. Polymerase chain reaction-based method for the identification of Leishmania (Viannia) braziliensis and Leishmania (Viannia) guyanensis in mucosal tissues conserved in paraffin
ABSTRACTINTRODUCTION: In the Americas, mucosal leishmaniasis is primarily associated with infection by Leishmania (Viannia) braziliensis. However, Leishmania (Viannia) guyanensis is another important cause of this disease in the Brazilian Amazon. In this study, we aimed at detecting Leishmaniadeoxyribonucleic acid (DNA) within paraffin-embedded fragments of
Rev. Soc. Bras. Med. Trop.. Publicado em: 2015-10
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10. Novos iniciadores para detecção de Leishmania infantum pela reação em cadeia da polimerase
RESUMO Leishmania infantum causa leishmaniose visceral (LV) no Novo Mundo. O diagnóstico de LV é confirmado por testes parasitológicos e sorológicos, os quais nem sempre são sensíveis ou específicos. Nosso objetivo foi desenhar novos iniciadores para realizar uma Reação em Cadeia da Polimerase (PCR) para detecção de L. infantum. Sequências do DNA
Rev. Inst. Med. trop. S. Paulo. Publicado em: 2015-10
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11. Leishmania (Viannia) naiffi: rare enough to be neglected?
In the Brazilian Amazon, American tegumentary leishmaniasis (ATL) is endemic and presents a wide spectrum of clinical manifestations due, in part, to the circulation of at least seven Leishmaniaspecies. Few reports of Leishmania (Viannia) naiffiinfection suggest that its occurrence is uncommon and the reported cases present a benign clinical course and a goo
Mem. Inst. Oswaldo Cruz. Publicado em: 2015-09
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12. Caracterização molecular da leishmaniose tegumentar americana em área de tríplice fronteira, Assis Brasil, Estado do Acre,Brasil
RESUMO O presente estudo caracterizou as espécies de Leishmaniapela Reação em Cadeia da Polimerase (PCR). Também descreveu os aspectos epidemiológicos de pacientes com suspeita de leishmaniose tegumentar americana do município de Assis Brasil, Estado do Acre, Brasil, localizado na tríplice fronteira Brasil/Peru/Bolívia. A PCR detectou DNA de Leishman
Rev. Inst. Med. trop. S. Paulo. Publicado em: 2015-08