The objective of the study was to confirm the presence of different morphological forms of Leishmania infantum promastigotes on bone marrow aspirates from a Spanish Greyhound with canine leishmaniosis.

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http://dx.doi.org/10.1111/vcp.13252DOI Listing

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Article Synopsis
  • In areas where canine leishmaniosis is common, the non-pathogenic Leishmania tarentolae coexists with the harmful Leishmania infantum, raising questions about their interactions and potential immune responses in dogs.
  • The study involved infecting twelve beagle dogs with L. tarentolae to measure antibody production, immunity duration, cytokine response, and any pathogenic effects, monitoring them over 206 days.
  • Findings showed that L. tarentolae is non-pathogenic, with detectable DNA for up to three months post-infection, and suggests its potential use as a protective measure or treatment against harmful Leishmania species in dogs and possibly humans.
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Activation Pathways of Murine Macrophages by Lipophosphoglycan from Strains of (FV1 and LV39).

ACS Infect Dis

October 2024

Núcleo de Agentes Infecciosos e Vetores (NAIVE), Universidade Federal do Oeste da Bahia (UFOB), Barreiras, BA 47808-021, Brasil.

Lipophosphoglycan (LPG) is an important virulence factor. It is the most abundant surface glycoconjugate in promastigotes, playing an important role in the interaction with phagocytic cells. While LPG is known to modulate the macrophage immune response during infection, the activation mechanisms triggered by this glycoconjugate have not been fully elucidated.

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Background: Leishmaniasis is a significant global public health issue that is caused by parasites from genus. With limited treatment options and rising drug resistance, there is a pressing need for new therapeutic approaches. Molecular chaperones, particularly Hsp90, play a crucial role in parasite biology and are emerging as promising targets for drug development.

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Effect of Leishmania infantum infection on B cell lymphopoiesis and memory in the bone marrow and spleen.

FASEB J

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Laboratory of Microbiology, Parasitology and Hygiene (LMPH), Infla-Med Centre of Excellence, University of Antwerp, Antwerp, Belgium.

Visceral leishmaniasis (VL) is characterized by an uncontrolled infection of internal organs such as the spleen, liver and bone marrow (BM) and can be lethal when left untreated. No effective vaccination is currently available for humans. The importance of B cells in infection and VL protective immunity has been controversial, with both detrimental and protective effects described.

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According to the World Health Organization (WHO), leishmaniasis is a zoonotic/anthroponotic parasitic disease endemic in 99 countries. It is estimated that approximately 12 million people are infected with Leishmania spp. and 350 million people live at risk.

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