Results 51 to 60 of about 6,508 (210)

Inducible Resistance to Oxidant Stress in the Protozoan Leishmania chagasi [PDF]

Journal of Biological Chemistry, 2000
Leishmania sp. protozoa are introduced into a mammalian skin by a sandfly vector, whereupon they encounter increased temperature and toxic oxidants generated during phagocytosis. We studied the effects of 37 degrees C "heat shock" or sublethal menadione, which generates superoxide and hydrogen peroxide, on Leishmania chagasi virulence.
M A, Miller, S E, McGowan, K R, Gantt, M, Champion, S L, Novick, K A, Andersen, C J, Bacchi, N, Yarlett, B E, Britigan, M E, Wilson   +9 more
openaire   +2 more sources

Transmission, reservoir hosts and control of zoonotic visceral leishmaniasis [PDF]

, 2009
Zoonotic visceral leishmaniasis (ZVL) caused by Leishmania infantum is an important disease of humans and dogs. Here we review aspects of the transmission and control of ZVL.
Courtenay, Orin, Quinnell, Rupert J., Quinnell, RJ, Courtenay, O   +3 more
core   +1 more source

Potential vectors of Leishmaniases in the Environmental Protection Area and Tinguá Federal Biological Reserve, Municipality of Nova Iguaçu, Rio de Janeiro, Brazil

Medical and Veterinary Entomology, Volume 40, Issue 2, Page 246-259, June 2026.
This study was to describe the composition of sand fly fauna, detect potential vectors of Leishmania spp. in the Tinguá district, an ATL endemic, Rio de Janeiro, Brazil. Seven species of vectorial importance in the epidemiological cycle of leishmaniasis was observed: Nyssomyia intermedia, Migonemyia migonei, Pintomyia fischeri, Psychodopygus hirsutus ...
Antônio L. F. Santana, Alfredo C. R. Azevedo, Margarete M. S. Afonso, Bruno M. Carvalho, Vanessa R. Vieira, Simone M. Costa, Júlia S. Silva, Thais A. Pereira, Daniela P. Pereira, Maurício L. Vilela   +9 more
wiley   +1 more source

Biology of visceral leishmaniasis vectors in San Andres de Sotavento focus (Cordoba Colombia). [PDF]

Throughout its range of South and Central America, visceral leishmaniasis due to Leishmania chagasi is transmitted by Lutzomyia longipalpis. Recently, a new vector, Lutzomyia evansi, has been discovered transmitting the parasite in ...
Montoya-Lerma, James
core   +1 more source

The molecular epidemiology and phylogeography of Trypanosoma cruzi and parallel research on Leishmania: looking back and to the future. [PDF]

, 2009
Trypanosoma cruzi is the protozoan agent of Chagas disease, and the most important parasitic disease in Latin America. Protozoa of the genus Leishmania are global agents of visceral and cutaneous leishmaniasis, fatal and disfiguring diseases.
Fitpatrick, S., Miles, M.A., Fitzpatrick, S, Mauricio, IL, Yeo, M., Gaunt, MW, Mauricio, I.L., Llewellyn, MS, Lewis, MD, Miles, MA, Baleela, R, Lewis, M.D., Gaunt, M.W., Yeo, M, Baleela, R., Llewellyn, M.S.   +15 more
core   +1 more source

Anti-leishmania antibodies in cerebrospinal fluid from dogs with visceral leishmaniasis

Brazilian Journal of Medical and Biological Research, 2003
Visceral leishmaniasis in Brazil is caused by Leishmania (Leishmania) chagasi and the dog is its most important reservoir. The clinical features in dogs include loss of weight, lymphadenopathy, renal failure, skin lesions, fever, hypergammaglobulinemia ...
V.M.F. Lima, M.E. Gonçalves, F.A. Ikeda, M.C.R. Luvizotto, M.M. Feitosa   +4 more
doaj   +1 more source

Evaluation of the Cutaneous Immunological Milieu Before and After Treatment With Meglumine Antimoniate in Dogs Naturally Affected by Leishmaniosis due to Leishmania infantum

Veterinary Dermatology, Volume 37, Issue 3, Page 455-463, June 2026.
Background: Canine leishmaniosis (CanL) is a zoonotic disease of variable severity. The typical immune response is driven by an exaggerated humoral immune response. Protective immunity is mediated by pro‐inflammatory cytokines that enhance macrophage leishmanicidal activity. Objective: To evaluate the cutaneous and the systemic immune responses as well
M. Platenik, A. Di Loria, L. Archer, M. Saridomichelakis, A. S. Benvenuto, D. Santoro   +5 more
wiley   +1 more source

Proteophosophoglycans regurgitated by Leishmania-infected sand flies target the L-arginine metabolism of host macrophages to promote parasite survival [PDF]

, 2009
All natural Leishmania infections start in the skin; however, little is known of the contribution made by the sand fly vector to the earliest events in mammalian infection, especially in inflamed skin that can rapidly kill invading parasites.
Podinovskaia, M, Rogers Matthew, Matthew Rogers, Rogers, Matthew E., Choi Beak-San, Choi, BS, Maria Podinovskaia, Kropf Pascale, Rogers, M, Bates, P, Dillon, R, Ingrid Müller, Kropf, P, Müller, Ingrid, Choi, B. S., Bates Paul, Podinovskaia, M., Kropf, P., Kropf, Pascale, Podinovskaia, Maria, Beak-San Choi, Rogers, Matthew, Dillon, Rod, Rod Dillon, Muller, I, Pascale Kropf, Dillon Rod, Bates, Paul, Müller Ingrid, Podinovskaia Maria, Choi, Beak-San, Paul Bates, Müller, I.   +32 more
core   +1 more source

Immunogold labeling and cerium cytochemistry of the enzyme ecto-5'-nucleotidase in promastigote forms of Leishmania species

Memorias do Instituto Oswaldo Cruz, 1993
We have applied both enzyme cytochemistry and immunological labeling techniques to characterize the enzyme 5'-nucleotidase (5'-Nase), at the ultrastructural level, in promastigote forms of four Leishmania species: Leishmania amazonensis, Leishmania ...
Suzana Corte-Real, Renato Porrozzi, Maria de Nazareth Leal de Meirelles   +2 more
doaj   +1 more source

Factors Associated With the Emergence and Spread of Visceral Leishmaniasis in the State of São Paulo, Brazil

Zoonoses and Public Health, Volume 73, Issue 4, Page 348-357, June 2026.
ABSTRACT Introduction Visceral leishmaniasis (VL), once considered a rural disease in Brazil, has progressively urbanised, particularly in the state of São Paulo (SSP), where the first urban cases emerged after the detection of the vector Lutzomyia longipalpis in 1997.
Vera Lucia Fonseca de Camargo‐Neves, Guilherme Loureiro Werneck   +1 more
wiley   +1 more source