Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1111/j.1365-3083.2008.02199.x http://hdl.handle.net/11449/70928 |
Resumo: | Paracoccidioidomycosis (PCM) is a systemic mycosis caused by Paracoccidiodes brasiliensis that presents a wide spectrum of clinical manifestations. Because of the great number of neutrophils polymorphonuclear neutrophils (PMN) found in the P. brasiliensis granuloma, studies have been done to evaluate the role of these cells during the development of the infection. This fungus is found intracellularly in PMN and monocytes/macrophages, suggesting that it is capable of evading damage and surviving inside these cells. Thus, in the present study, we investigated whether P. brasiliensis can prolong the lifetime of PMN, and if this process would be related with IL-8 levels. PMN apoptosis and intracellular levels of IL-8 were analysed by flow cytometry and culture supernatants IL-8 levels were evaluated by enzyme-linked immunosorbent assay. We found that coincubation with P. brasiliensis yeast cells results in an inhibition of PMN apoptosis, which was associated with increase in IL-8 production by these cells. Cocultures treatment with monoclonal antibody anti-IL-8 reversed the inhibitory effect of P. brasiliensis on PMN apoptosis, besides to increase spontaneous apoptosis of these cells. These data show that, in contrast to other microbial pathogens that drive phagocytes into apoptosis to escape killing, P. brasiliensis can extend the lifetime of normal human PMN by inducing autocrine IL-8 production. © 2008 The Authors. |
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Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8interleukin 8interleukin 8 antibodyadultapoptosiscell culturecell levelcell survivalcontrolled studycytokine productioncytokine releaseenzyme linked immunosorbent assayflow cytometryhumanhuman cellneutrophilnormal humanParacoccidioides brasiliensisphagocytepriority journalyeast cellAdultAntibodies, MonoclonalApoptosisHumansInterleukin-8Middle AgedNeutrophilsParacoccidioidesPhagocytosisParacoccidioidomycosis (PCM) is a systemic mycosis caused by Paracoccidiodes brasiliensis that presents a wide spectrum of clinical manifestations. Because of the great number of neutrophils polymorphonuclear neutrophils (PMN) found in the P. brasiliensis granuloma, studies have been done to evaluate the role of these cells during the development of the infection. This fungus is found intracellularly in PMN and monocytes/macrophages, suggesting that it is capable of evading damage and surviving inside these cells. Thus, in the present study, we investigated whether P. brasiliensis can prolong the lifetime of PMN, and if this process would be related with IL-8 levels. PMN apoptosis and intracellular levels of IL-8 were analysed by flow cytometry and culture supernatants IL-8 levels were evaluated by enzyme-linked immunosorbent assay. We found that coincubation with P. brasiliensis yeast cells results in an inhibition of PMN apoptosis, which was associated with increase in IL-8 production by these cells. Cocultures treatment with monoclonal antibody anti-IL-8 reversed the inhibitory effect of P. brasiliensis on PMN apoptosis, besides to increase spontaneous apoptosis of these cells. These data show that, in contrast to other microbial pathogens that drive phagocytes into apoptosis to escape killing, P. brasiliensis can extend the lifetime of normal human PMN by inducing autocrine IL-8 production. © 2008 The Authors.Department of Microbiology and Immunology Biosciences Institute São Paulo State University, Botucatu, SPBotucatu Blood Center School of Medicine São Paulo State University, Botucatu, SPDepartment of Micro-biology and Immunology Biosciences Institute São Paulo State University, Botucatu, CEP 18618-000, SPDepartment of Microbiology and Immunology Biosciences Institute São Paulo State University, Botucatu, SPBotucatu Blood Center School of Medicine São Paulo State University, Botucatu, SPDepartment of Micro-biology and Immunology Biosciences Institute São Paulo State University, Botucatu, CEP 18618-000, SPUniversidade Estadual Paulista (Unesp)Acorci, M. J. [UNESP]Dias-Melicio, L. A. [UNESP]Golim, M. A. [UNESP]Bordon-Graciani, A. P. [UNESP]Peraçoli, M. T S [UNESP]Soares, A. M V C [UNESP]2014-05-27T11:23:52Z2014-05-27T11:23:52Z2009-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article73-79application/pdfhttp://dx.doi.org/10.1111/j.1365-3083.2008.02199.xScandinavian Journal of Immunology, v. 69, n. 2, p. 73-79, 2009.0300-94751365-3083http://hdl.handle.net/11449/7092810.1111/j.1365-3083.2008.02199.x2-s2.0-588491334572-s2.0-58849133457.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengScandinavian Journal of Immunology2.3140,8910,891info:eu-repo/semantics/openAccess2023-10-05T06:07:16Zoai:repositorio.unesp.br:11449/70928Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:05:41.222763Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
title |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
spellingShingle |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 Acorci, M. J. [UNESP] interleukin 8 interleukin 8 antibody adult apoptosis cell culture cell level cell survival controlled study cytokine production cytokine release enzyme linked immunosorbent assay flow cytometry human human cell neutrophil normal human Paracoccidioides brasiliensis phagocyte priority journal yeast cell Adult Antibodies, Monoclonal Apoptosis Humans Interleukin-8 Middle Aged Neutrophils Paracoccidioides Phagocytosis |
title_short |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
title_full |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
title_fullStr |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
title_full_unstemmed |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
title_sort |
Inhibition of human neutrophil apoptosis by Paracoccidioides brasiliensis: Role of interleukin-8 |
author |
Acorci, M. J. [UNESP] |
author_facet |
Acorci, M. J. [UNESP] Dias-Melicio, L. A. [UNESP] Golim, M. A. [UNESP] Bordon-Graciani, A. P. [UNESP] Peraçoli, M. T S [UNESP] Soares, A. M V C [UNESP] |
author_role |
author |
author2 |
Dias-Melicio, L. A. [UNESP] Golim, M. A. [UNESP] Bordon-Graciani, A. P. [UNESP] Peraçoli, M. T S [UNESP] Soares, A. M V C [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Acorci, M. J. [UNESP] Dias-Melicio, L. A. [UNESP] Golim, M. A. [UNESP] Bordon-Graciani, A. P. [UNESP] Peraçoli, M. T S [UNESP] Soares, A. M V C [UNESP] |
dc.subject.por.fl_str_mv |
interleukin 8 interleukin 8 antibody adult apoptosis cell culture cell level cell survival controlled study cytokine production cytokine release enzyme linked immunosorbent assay flow cytometry human human cell neutrophil normal human Paracoccidioides brasiliensis phagocyte priority journal yeast cell Adult Antibodies, Monoclonal Apoptosis Humans Interleukin-8 Middle Aged Neutrophils Paracoccidioides Phagocytosis |
topic |
interleukin 8 interleukin 8 antibody adult apoptosis cell culture cell level cell survival controlled study cytokine production cytokine release enzyme linked immunosorbent assay flow cytometry human human cell neutrophil normal human Paracoccidioides brasiliensis phagocyte priority journal yeast cell Adult Antibodies, Monoclonal Apoptosis Humans Interleukin-8 Middle Aged Neutrophils Paracoccidioides Phagocytosis |
description |
Paracoccidioidomycosis (PCM) is a systemic mycosis caused by Paracoccidiodes brasiliensis that presents a wide spectrum of clinical manifestations. Because of the great number of neutrophils polymorphonuclear neutrophils (PMN) found in the P. brasiliensis granuloma, studies have been done to evaluate the role of these cells during the development of the infection. This fungus is found intracellularly in PMN and monocytes/macrophages, suggesting that it is capable of evading damage and surviving inside these cells. Thus, in the present study, we investigated whether P. brasiliensis can prolong the lifetime of PMN, and if this process would be related with IL-8 levels. PMN apoptosis and intracellular levels of IL-8 were analysed by flow cytometry and culture supernatants IL-8 levels were evaluated by enzyme-linked immunosorbent assay. We found that coincubation with P. brasiliensis yeast cells results in an inhibition of PMN apoptosis, which was associated with increase in IL-8 production by these cells. Cocultures treatment with monoclonal antibody anti-IL-8 reversed the inhibitory effect of P. brasiliensis on PMN apoptosis, besides to increase spontaneous apoptosis of these cells. These data show that, in contrast to other microbial pathogens that drive phagocytes into apoptosis to escape killing, P. brasiliensis can extend the lifetime of normal human PMN by inducing autocrine IL-8 production. © 2008 The Authors. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-02-01 2014-05-27T11:23:52Z 2014-05-27T11:23:52Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1111/j.1365-3083.2008.02199.x Scandinavian Journal of Immunology, v. 69, n. 2, p. 73-79, 2009. 0300-9475 1365-3083 http://hdl.handle.net/11449/70928 10.1111/j.1365-3083.2008.02199.x 2-s2.0-58849133457 2-s2.0-58849133457.pdf |
url |
http://dx.doi.org/10.1111/j.1365-3083.2008.02199.x http://hdl.handle.net/11449/70928 |
identifier_str_mv |
Scandinavian Journal of Immunology, v. 69, n. 2, p. 73-79, 2009. 0300-9475 1365-3083 10.1111/j.1365-3083.2008.02199.x 2-s2.0-58849133457 2-s2.0-58849133457.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Scandinavian Journal of Immunology 2.314 0,891 0,891 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
73-79 application/pdf |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
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1808128315185168384 |