36 documents found, page 1 of 4
Immunogenicity of HLA-DR1 and HLA-A2 peptides derived from Leishmania major Gp6...
Silva, Larissa Pinheiro; Paciello, Mauricio Oviedo; Aviz Teixeira, Wéllida Patricia; Rivas, Açucena Veleh; Agular, Raimundo Wagner SouzaMade available in DSpace on 2020-12-12T02:18:02Z (GMT). No. of bitstreams: 0 Previous issue date: 2020-01-01; Aims: This study aimed to evaluate the toxicity and humoral and cellular immune response of three heterologous vaccines against Leishmania infantum, yet containing synthetic peptides from Leishmania major in the experimental model in hamsters. Methods and Results: Through bioinformatics analyses, two Le...
Neutrophil properties in healthy and Leishmania infantum-naturally infected dogs.
Wardini, Amanda Brito; Silva, Lucia Helena Pinto da; Nadaes, Natalia Rocha; Nascimento, Michelle Tanny Cunha do; Roatt, Bruno MendesVisceral leishmaniasis is a chronic disease that afects humans and dogs as well. Dogs, the domestic reservoir of Leishmania, play a central role in the transmission of visceral leishmaniasis, the most severe form of this disease. Neutrophils are the most abundant leukocytes in blood and interact with the parasite after infection. Here, we evaluate the efector properties of neutrophils from healthy and naturally...
Impact of LbSapSal Vaccine in Canine Immunological and Parasitological Features...
Resende, Lucilene Aparecida; Soares, Rodrigo Dian de Oliveira Aguiar; Ker, Henrique Gama; Roatt, Bruno Mendes; Mendonça, Ludmila Zanandreis deFundação de Amparo a Pesquisa do Estado de Minas Gerais. Belo Horizonte, MG, Brazil; Universidade Federal de Minas Gerais. Departamento de Morfologia. Laboratório de Biologia das Interações Celulares. Belo Horizonte, MG, Brazil/Universidade Federal de Ouro Preto. Instituto de Ciências Exatas e Biológicas. Núcleo de Pesquisas em Ciências Biológicas/NUPEB Laboratório de Imunopatologia. Ouro Preto, MG, Brazil; Uni...
LBSapSal-vaccinated dogs exhibit increased circulating T-lymphocyte subsets (CD...
Soares, Rodrigo Dian de Oliveira Aguiar; Roatt, Bruno Mendes; Ker, Henrique Gama; Moreira, Nádia das Dores; Mathias, Fernando Augusto SiqueiraBackground: The development of a protective vaccine against canine visceral leishmaniasis (CVL) is an alternative approach for interrupting the domestic cycle of Leishmania infantum. Given the importance of sand fly salivary proteins as potent immunogens obligatorily co-deposited during transmission of Leishmania parasites, their inclusion in an anti-Leishmania vaccine has been investigated in the last few deca...
A vaccine therapy for canine visceral leishmaniasis promoted significant improv...
Roatt, Bruno Mendes; Soares, Rodrigo Dian de Oliveira Aguiar; Reis, Levi Eduardo Soares; Cardoso, Jamille Mirelle de OliveiraHerein, we evaluated the treatment strategy employing a therapeutic heterologous vaccine composed of antigens of Leishmania braziliensis associated with MPL adjuvant (LBMPL vaccine) for visceral leishmaniasis (VL) in symptomatic dogs naturally infected by Leishmania infantum. Sixteen dogs received immunotherapy with MPL adjuvant (n = 6) or with a vaccine composed of antigens of L. braziliensis associated with M...
Multicomponent LBSap vaccine displays immunological and parasitological profile...
Mendonça, Ludmila Zanandreis de; Resende, Lucilene Aparecida; Lanna, Mariana Ferreira; Soares, Rodrigo Dian de Oliveira Aguiar; Roatt, Bruno MendesBackground: In past years, many researchers have sought canine visceral leishmaniasis (CVL) prevention through the characterization of Leishmania antigens as vaccine candidates. Despite these efforts, there is still no efficient vaccine for CVL control. Methods: In the present study, we performed a pre-clinical vaccine trial using BALB/c mice to compare the effects of the multicomponent LBSap vaccine with those...
Higher expression of CCL2, CCL4, CCL5, CCL21, and CXCL8 chemokines in the skin ...
Souza, Daniel Menezes; Cota, Renata Guerra de Sá; Carneiro, Cláudia Martins; Souza, Juliana Vitoriano de; Giunchetti, Rodolfo CordeiroBackground: The immune response in the skin of dogs infected with Leishmania infantum is poorly understood, and limited studies have described the immunopathological profile with regard to distinct levels of tissue parasitism and the clinical progression of canine visceral leishmaniasis (CVL). Methodology/Principal Findings: A detailed analysis of inflammatory cells (neutrophils, eosinophils, mast cells, lympho...
Clinical, hematological and biochemical alterations in hamster (Mesocricetus au...
Moreira, Nádia das Dores; Souza, Juliana Vitoriano de; Roatt, Bruno Mendes; Vieira, Paula Melo de Abreu; Vital, Wendel CouraBackground: Leishmaniasis remains among the most important parasitic diseases in the developing world and visceral leishmaniasis (VL) is the most fatal. The hamster Mesocricetus auratus is a susceptible model for the characterization of the disease, since infection of hamsters with L. infantum reproduces the clinical and pathological features of human VL. In this context, it provides a unique opportunity to stu...
Immunological profile of resistance and susceptibility innaturally infected dog...
Leal, Gleisiane Gomes de Almeida; Roatt, Bruno Mendes; Soares, Rodrigo Dian de Oliveira Aguiar; Carneiro, Cláudia Martins; Giunchetti, Rodolfo CordeiroVisceral leishmaniasis has a great impact on public health, and dogs are considered the maindomestic reservoir of Leishmania infantum, the causal parasite. In this study, 159 animalsnaturally infected by L. infantum from an endemic area of Brazil were evaluated through ananalysis of cellular responses, using flow cytometry, and of the hematological parameters.The results confirmed that disease progression is as...
Kinetics of cell migration to the dermis and hypodermis in dogs vaccinated with...
Souza, Juliana Vitoriano de; Reis, Alexandre Barbosa; Moreira, Nádia das Dores; Giunchetti, Rodolfo Cordeiro; Oliveira, Rodrigo Corrêa deThe search for new immunobiologicals against canine visceral leishmaniasis (CVL) has intensified in the last decade. However, it still remains to be elucidated that mechanisms of the innate immune response in situ after immunization (a.i.). The aim of this study was to investigate the kinetics of cell migration in the skin dogs with distinct antigenic compounds of the LBSap vaccine. Our major findings indicated...