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https://riquim.fq.edu.uy/files/original/144cdc74870cc86836e0053bd515b7e2.pdf
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https://riquim.fq.edu.uy/files/original/85430e399888ab39a51ad2de60718b23.jpg
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Omeka Image File
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8
Channels
3
Height
150
Width
114
Dublin Core
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Title
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Bibliografía Nacional Química
Description
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Contiene la producción científica nacional de los profesionales químicos e investigadores, durante el período 1929 hasta la fecha.
Contributor
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Departamento de Documentación y Biblioteca
RIQUIM
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PDF
Dublin Core
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Title
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<strong>Characterization of the immunosuppressive environment induced by larval Echinococcus granulosus during chronic experimental infection</strong>
Subject
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ECHINOCOCCUS GRANULOSUS
MACROFAGO
INMUNOSUPRESION
BIBLIOGRAFIA NACIONAL QUIMICA
2024
Abstract
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The larval stage of Echinococcus granulosus causes the chronic infection known as cystic echinococcosis, deploying strong inhibitory mechanisms on host immune responses. Using experimental intraperitoneal infection in C57BL/6 mice, we carried out an in-depth analysis of the local changes in macrophage populations associated with chronic infection. In addition, we analyzed T cells and relevant soluble mediators. Infected animals showed an increase in local cell numbers, mostly accounted for by eosinophils, T cells, and macrophages. Within macrophage populations, the largest increases in cell numbers corresponded to resident large peritoneal macrophages (LPM). Monocyte recruitment appeared to be active, as judged by the increased number of monocytes and cells in the process of differentiation towards LPM, including small (SPM) and converting peritoneal macrophages (CPM). In contrast, we found no evidence of macrophage proliferation. Infection induced the expression of M2 markers in SPM, CPM, and LPM. It also enhanced the expression of the co-inhibitor PD-L1 in LPM, SPM, and CPM and induced the co-inhibitor PD-L2 in SPM and CPM. Therefore, local macrophages acquire M2-like phenotypes with probable suppressive capacities. Regarding T cells, infection induced an increase in the percentage of CD4+ cells that are PD-1+, which represent a potential target of suppression by PD-L1+/PD-L2+ macrophages. In possible agreement, CD4+ T cells from infected animals showed blunted proliferative responses to in vitro stimulation with anti-CD3. Further evidence of immune suppression in the parasite vicinity arose from the observation of an expansion in FoxP3+ CD4+ regulatory T cells and increases in the local concentrations of the anti-inflammatory cytokines TGF-β and IL-1Ra.
Creator
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<strong>Grezzi, Leticia</strong>
<strong>Martínez, Yamila E.</strong>
<strong>Barrios, Anabella A.</strong>
<strong>Díaz, Alvaro</strong>
<strong>Casaravilla, Cecilia</strong>
Source
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Infection and Immunity v. 92, n°2, 2024
Publisher
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American Society for Microbiology
Date
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2024
Rights
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<p><strong>Información sobre Derechos de Autor</strong></p>
<p>(Por favor lea este aviso antes de abrir los documentos u objetos)</p>
<p><strong>La legislación uruguaya protege el derecho</strong> de autor sobre toda creación literaria, científica o artística, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeción a lo establecido por el derecho común y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)</p>
<p><strong>ADVERTENCIA -</strong> La consulta de este documento queda condicionada a la aceptación de las siguientes condiciones de uso: Este documento es únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilización o cita de partes debe indicarse el nombre de la persona autora.</p>
Format
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PDF
Extent
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19 p.
Language
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Inglés
Type
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Artículo
Identifier
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10.1128/iai.00276-23
Echinoccocus granulosus
Inmunosupresión
Macrógafo