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Evaluation of gene expression of toll-like receptors and NOD-like receptors in polymorphonuclear and mononuclear cells in the peripheral blood of dogs with visceral leishmaniasis

Grant number: 12/25249-9
Support Opportunities:Scholarships abroad - Research Internship - Master's degree
Effective date (Start): March 01, 2013
Effective date (End): May 31, 2013
Field of knowledge:Agronomical Sciences - Veterinary Medicine - Animal Pathology
Principal Investigator:Gisele Fabrino Machado
Grantee:José Eduardo dos Santos Silva
Supervisor: Gabriela Maria Santos-Gomes
Host Institution: Faculdade de Medicina Veterinária (FMVA). Universidade Estadual Paulista (UNESP). Campus de Araçatuba. Araçatuba , SP, Brazil
Research place: Universidade Nova de Lisboa, Portugal  
Associated to the scholarship:11/15523-3 - Encephalic inflammatory changes and the correlation with lymphocytes and dendritic cells population in lymphonodes of the head of dogs with visceral leishmaniosis., BP.MS


Visceral leishmaniasis is an anthropozoonosis caused by Leishmania chagasi (= L. infantum). In dog, main domestic reservoir, Leishmania is efficient in modifying the immune response of the host. The innate immune system detects microorganisms through pattern recognition receptors (PRRs), such as Toll-like receptors and NOD-like receptors, recognizing pathogen-associated molecular patterns (PAMPs). The objective of this study is performing the absolute quantification of gene expression of these receptors in mononuclear and polymorphonuclear cells. Therefore, the gene expression will be evaluated by real time RT-PCR in the receptors Toll 2, Toll 4, Toll 9, NOD 1 and NOD 2 in monocytes, neutrophils and B lymphocytes in the peripheral blood of infected and healthy dogs, considering that the level of expression of these receptors can provide new insights in the pathways where the parasite Leishmania induce the activation of the innate immune system and, eventually, the activation of acquired immune system. (AU)

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