Author | Silva, Joselli Santos | |
Author | Andrade, Alan C | |
Author | Santana, Cláudia Dias de | |
Author | Santos, Leina Q | |
Author | Oliveira, Camila Indiani de | |
Author | Veras, Patrícia Sampaio Tavares | |
Author | Vassallo, José | |
Author | dosSantos, Washington Luis Conrado | |
Access date | 2012-11-21T19:16:07Z | |
Available date | 2012-11-21T19:16:07Z | |
Document date | 2012 | |
Citation | SILVA, J.S. et al. Low CXCL13 expression, splenic lymphoid tissue atrophy and germinal center disruption in severe canine visceral leishmaniasis. PLoS One, v. 7, n. 1, p. e29103, 2012. | pt_BR |
ISSN | 1932-6203 | |
URI | https://www.arca.fiocruz.br/handle/icict/5848 | |
Language | eng | pt_BR |
Rights | open access | |
Title | Low CXCL13 expression, splenic lymphoid tissue atrophy and germinal center disruption in severe canine visceral leishmaniasis. | pt_BR |
Type | Article | pt_BR |
DOI | 10.1371/journal.pone.0029103 | |
Abstract | Visceral leishmaniasis is associated with atrophy and histological disorganization of splenic compartments. In this paper, we compared organized and disorganized splenic lymphoid tissue from dogs naturally infected with Leishmania infantum assessing the size of the white pulp compartments, the distribution of T, B and S100+ dendritic cells, using immunohistochemistry and morphometry and the expression of CCR7 and the cytokines, CXCL13, lymphotoxin (LT)-α, LT-ß, CCL19, CCL21, TNF-α, IL-10, IFN-γ and TGF-ß, using by real time RT-PCR. The lymphoid follicles and marginal zones were smaller (3.2 and 1.9 times, respectively; Mann-Whitney, P<0.02) in animals with disorganized splenic tissue in comparison to those with organized splenic lymphoid tissue. In spleens with disorganized lymphoid tissue, the numbers of T cells and S100+ dendritic cells were decreased in the follicles, and the numbers of B cells were reduced in both the follicles and marginal zones. CXCL13 mRNA expression was lower in animals with disorganized lymphoid tissue (0.5±0.4) compared to those with organized lymphoid tissue (2.7±2.9, both relative to 18S expression, P = 0.01). These changes in the spleen were associated with higher frequency of severe disease (7/12) in the animals with disorganized than in animals with organized (2/13, Chi-square, P = 0.01) splenic lymphoid tissue. The data presented herein suggest that natural infection with Leishmania infantum is associated with the impairment of follicular dendritic cells, CXCL13 expression, B cell migration and germinal center formation and associates these changes with severe clinical forms of visceral leishmaniasis. Furthermore the fact that this work uses dogs naturally infected with Leishmania infantum emphasizes the relevance of the data presented herein for the knowledge on the canine and human visceral leishmaniasis. | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil. | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil. | pt_BR |
Affilliation | Escola Bahiana de Medicina e Saúde Pública - Biomedicina. Salvador, BA, Brasil. | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil. | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, Bahia, Brasil. | pt_BR |
Affilliation | Universidade Estadual de Campinas. Faculdade de Ciências Médicas. Campinas, São Paulo, Brasil | pt_BR |
Affilliation | Fundação Oswaldo Cruz. Centro de Pesquisas Gonçalo Moniz. Salvador, BA, Brasil. | pt_BR |
DeCS | Quimiocina CXCL13/metabolismo | pt_BR |
DeCS | Doenças do Cão/imunologia | pt_BR |
DeCS | Centro Germinativo/imunologia | pt_BR |
DeCS | Centro Germinativo/parasitologia | pt_BR |
DeCS | Leishmaniose Visceral/veterinária | pt_BR |
DeCS | Baço/imunologia | pt_BR |
DeCS | Baço/parasitologia | pt_BR |
DeCS | Animais | pt_BR |
DeCS | Atrofia | pt_BR |
DeCS | Quimiocina CXCL13/genética | pt_BR |
DeCS | DNA de Protozoário/análise | pt_BR |
DeCS | DNA de Protozoário/genética | pt_BR |
DeCS | Doenças do Cão/genética | pt_BR |
DeCS | Doenças do Cão/parasitologia | pt_BR |
DeCS | Doenças do Cão/patologia | pt_BR |
DeCS | Cães | pt_BR |
DeCS | Regulação da Expressão Gênica | pt_BR |
DeCS | Humanos | pt_BR |
DeCS | Leishmania infantum/genética | pt_BR |
DeCS | Leishmaniose Visceral/genética | pt_BR |
DeCS | Leishmaniose Visceral/imunologia | pt_BR |
DeCS | Leishmaniose Visceral/patologia | pt_BR |
DeCS | Leucócitos/parasitologia | pt_BR |
DeCS | Leucócitos/patologia | pt_BR |
DeCS | Reação em Cadeia da Polimerase em Tempo Real | pt_BR |
DeCS | Receptores CCR7/genética | pt_BR |
DeCS | Receptores CCR7/metabolismo | pt_BR |
DeCS | Baço/patologia | pt_BR |