Lima, Valéria Marçal Felix de [UNESP]Chiku, Vanessa Marim [UNESP]2016-09-272016-09-272015-12-04CHIKU, Vanessa Marim. Função de PD-1 na apoptose de linfócitos T na leishmaniose visceral canina. 2015. 67 f. Dissertação (mestrado) - Universidade Estadual Paulista Júlio de Mesquita Filho, Faculdade de Medicina Veterinária, 2015.http://hdl.handle.net/11449/144050Dogs infected with Leishmania infantum showed a reduction in the number of lymphocytes T. PD-1 (Programmed cell death 1) a new member of the B7-CD28 family, it is expressed by cells of the immune system and its binding to PD-L1 (CD274) or PD-L2 (CD273) induces deactivation of T cells or apoptosis. This study aimed to evaluate the PD-1 expression and its ligands as well as their role in T lymphocyte induction of apoptosis, TNF-α and IL-4 secretion, nitric oxide production and parasite load in dogs with visceral leishmaniasis. We observed that in canine visceral leishmaniasis PD-1 and its ligands involved in induction of apoptosis of T lymphocytes, are regulating the nitric oxide production, TNF-α, IL-4, as well as the parasitic load. This study helps to clarify the mechanism of immune response and immunotherapeutic drugs such as blocking monoclonal antibodies that can influence the LVC67 f.porCãesLeishmaniose visceralLeishmanioseAnticorpos monoclonaisCelulas TLeishmania infantumDissertação de mestradoAcesso aberto000870645000870645.pdf33004021075P84875352337860036