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1.
Article in English | MEDLINE | ID: mdl-33207754

ABSTRACT

The American cutaneous (CL) and visceral leishmaniasis (VL) are zooanthroponoses transmitted by sand flies. Brazil records thousands of human leishmaniasis cases annually. Dogs are reservoirs of Leishmania infantum, which causes VL, but their role in the transmission cycle of CL is debatable. Wild mammals are considered reservoirs of the aetiological agents of CL (Leishmania spp.). OBJECTIVE: To describe the aetiology of leishmaniasis in dogs in an endemic area for CL and VL in the Amazon, Brazil. METHODS: Clinical evaluation and blood collection of 40 dogs from the villages Ubim (20) and Socorro (20), city of Tomé-Açu, state of Pará, were carried out. The DNA extracted from the blood was used for PCR with Leishmania-specific primers targeting the hsp70-234 gene sequence. Products were sequenced (ABI3500XL), and the sequences were aligned, edited (BioEdit), and analyzed (Blastn). RESULTS: Of the 34 amplified samples, 21 were sequenced, namely Leishmania infantum (12), L. guyanensis (5), L. braziliensis (3), and Leishmania sp. (01). CONCLUSION: Given the diversity of circulating pathogens, elucidation of the role of the dog in the Leishmania spp. cycle in Amazonian villages is imperative to the surveillance of CL in the region. We present the first report in Brazil, confirmed by sequencing, of canine infection by L. guyanensis, a species highly resistant to treatment in humans, with the drug of first choice (Glucantime®).


Subject(s)
Dog Diseases , Leishmania guyanensis , Leishmaniasis , Animals , Brazil/epidemiology , Cities , Dog Diseases/epidemiology , Dog Diseases/parasitology , Dogs , Leishmania/classification , Leishmania/genetics , Leishmania guyanensis/genetics , Leishmaniasis/epidemiology , Leishmaniasis/parasitology , Leishmaniasis/veterinary
2.
Rev. bras. hematol. hemoter ; 21(3): 109-115, set.-dez. 1999. tab
Article in English | LILACS | ID: lil-310383

ABSTRACT

Os sistemas de grupos sangüíneos ABO e Lewis foram determinados nos níveis eritrocitário e salivar em uma populaçäo indígena miscigenada da reserva Canindé. A populaçäo desta reserva está distribuída em seis vilas compostas por indivíduos originários de diferentes tribos. A distribuiçäo dos fenótipos ABO inclui 87 por cento dos indivíduos no grupo sangüíneo O e 13 por cento no grupo sangüíneo A. Em relaçäo ao fenótipo Lewis eritrocitário, foram consideradas as seguintes freqüências: 4 por cento Le (a+b-), 48 por cento Le (a-b+), 34 por centro Le (a-b-) E 14 por cento Le (a+b+). Um problema nestes achados tem sido a observaçäo de que alguns indivíduos que apresentam o fenótipo eritrocitário Le (a-b-), mostraram atividade anti-Le b em suas secreçöes salivares. A freqüência elevada do fenótipo eritrocitário (a+b+) é compatível com a média descrita para populaçöes de origem Asiática. A análise estatística com o teste G independente näo-paramétrico mostrou uma diferença näo significativa na distribuiçäo dos grupos sangüíneos ABO e Lewis nas diferentes vilas relatadas.


Subject(s)
Male , Humans , Female , ABO Blood-Group System , Blood Group Antigens , Indians, South American , Lewis Blood Group Antigens
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