Results 171 to 180 of about 6,508 (210)
Serine protease activities in Leishmania (Leishmania) chagasi promastigotes
Parasitology Research, 2010 The present work reports the isolation, biochemical characterization, and subcellular location of serine proteases from aqueous, detergent soluble, and culture supernatant of Leishmania chagasi promastigote extracts, respectively, LCSII, LCSI, and LCSIII. The active enzyme molecular masses of LCSII were about 105, 66, and 60 kDa; of LCSI, 60 and 58 kDa;
Raquel Elisa, da Silva-López +4 more
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Ultrastructural and cytochemical identification of megasome in Leishmania (Leishmania) chagasi
Parasitology Research, 2004 The present work showed the presence of a megasome in Leishmania (Leishmania) chagasi amastigotes. Transmission electron microscopy analysis of ultrathin serial sections and three-dimensional reconstruction allowed visualization of large structures in amastigote forms of L.
Sanny O, Alberio +5 more
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Transactions of the Royal Society of Tropical Medicine and Hygiene, 2006 We report here the first case of co-infection with Leishmania (Viannia) braziliensis and Leishmania (Leishmania) chagasi in a naturally infected dog from Rio de Janeiro, Brazil. Isoenzyme characterisation identified the parasites isolated in culture from
M F Madeira, A Schubach, R S Pacheco
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Leishmania (Leishmania) chagasi is not vertically transmitted in dogs
Veterinary Parasitology, 2002The most frequent and most important mode of human or canine visceral leishmaniasis (CVL) transmission is through the bite of infected sand flies. This study investigates Leishmania (Leishmania) chagasi vertical transmission in offspring of naturally infected dogs. Thus 63 puppies from 18 female dogs with CVL were used.
Hélida M, Andrade +6 more
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Veterinary Parasitology, 2010
Although bats are one of the most abundant mammals in the new world and are present in virtually all ecosystems, including urban and peri-urban environments, few studies have investigated the role of these animals in the epidemiological chain of leishmaniosis.
Elisa San Martin Mouriz, Savani +6 more
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Although bats are one of the most abundant mammals in the new world and are present in virtually all ecosystems, including urban and peri-urban environments, few studies have investigated the role of these animals in the epidemiological chain of leishmaniosis.
Elisa San Martin Mouriz, Savani +6 more
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The promoter for the ribosomal RNA genes of Leishmania chagasi
Molecular and Biochemical Parasitology, 1996A promoter for the rRNA genes of Leishmania chagasi was found to be located about 1 kb upstream of the 18S rRNA coding region and immediately downstream of 64 bp tandem repeats. Its approximate boundaries and corresponding transcription start site were determined by transient transfections and primer extension assays. This promoter for RNA polymerase I
L S, Gay, M E, Wilson, J E, Donelson
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Detection of Leishmania (L.) chagasi in canine skin
Veterinary Parasitology, 2011Canine visceral leishmaniasis (CVL) is caused by a protozoa parasite of the specie Leishmania (L.) chagasi endemic for humans and dogs in many regions of Brazil. The purpose of the present study was the detection of (L.) chagasi in canine skin tissues from three different groups of clinical signs: asymptomatic, oligosymptomatic and polysymptomatic ...
de Queiroz, N. M. G. P. +5 more
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The American Journal of Tropical Medicine and Hygiene, 2008
Azithromycin, an azalide antibiotic, is highly concentrated within different phagocytic cells, especially macrophages. The potential antileishmanial activity of azithromycin against three species of Leishmania from the New World was assessed using in vitro models.
Fernanda, de Oliveira-Silva +2 more
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Azithromycin, an azalide antibiotic, is highly concentrated within different phagocytic cells, especially macrophages. The potential antileishmanial activity of azithromycin against three species of Leishmania from the New World was assessed using in vitro models.
Fernanda, de Oliveira-Silva +2 more
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International Journal for Parasitology, 2004
Apoptosis in amastigotes from hamsters infected with visceral leishmaniasis was absent 30-day post-infection but appeared 90-day post-infection in the liver and spleen, as analysed using the TUNEL method. Necrosis was not present in these tissues and the nuclei of macrophages harbouring apoptotic amastigotes were preserved. Amastigote DNA fragmentation
José A L, Lindoso +2 more
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Apoptosis in amastigotes from hamsters infected with visceral leishmaniasis was absent 30-day post-infection but appeared 90-day post-infection in the liver and spleen, as analysed using the TUNEL method. Necrosis was not present in these tissues and the nuclei of macrophages harbouring apoptotic amastigotes were preserved. Amastigote DNA fragmentation
José A L, Lindoso +2 more
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Asymptomatic human carriers of Leishmania chagasi.
The American journal of tropical medicine and hygiene, 2002In Brazil, programs based on elimination of infected dogs have not curtailed the spread of visceral leishmaniasis (VL), suggesting that other reservoirs of infection exist. Persons with active VL can infect the sand fly vector, but in endemic areas, persons with asymptomatic infections, whose infectivity to sand flies is unknown, are far more numerous.
Carlos H N, Costa +12 more
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