Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis

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Main Author: Gomes, Clayson Moura
Other Authors: Oliveira, Milton Adriano Pelli de
Format: Others
Language:Portuguese
Published: Universidade Federal de Goiás 2014
Subjects:
Online Access:http://repositorio.bc.ufg.br/tede/handle/tede/3199
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record_format oai_dc
collection NDLTD
language Portuguese
format Others
sources NDLTD
topic Leishmania (Viannia) braziliensis
Leishmaniose cutânea
Leishmaniose mucosa
Células mononucleares
Citocina
Human
Leishmaniasis
CIENCIAS BIOLOGICAS::IMUNOLOGIA
spellingShingle Leishmania (Viannia) braziliensis
Leishmaniose cutânea
Leishmaniose mucosa
Células mononucleares
Citocina
Human
Leishmaniasis
CIENCIAS BIOLOGICAS::IMUNOLOGIA
Gomes, Clayson Moura
Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis
description Submitted by Erika Demachki (erikademachki@gmail.com) on 2014-09-26T20:15:20Z No. of bitstreams: 2 Clayson Gomes - 2012 - dissertação.pdf: 1729605 bytes, checksum: 48dd1bd05f0e954a3dd14fb20b162e2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) === Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2014-09-26T21:28:37Z (GMT) No. of bitstreams: 2 Clayson Gomes - 2012 - dissertação.pdf: 1729605 bytes, checksum: 48dd1bd05f0e954a3dd14fb20b162e2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) === Made available in DSpace on 2014-09-26T21:28:37Z (GMT). No. of bitstreams: 2 Clayson Gomes - 2012 - dissertação.pdf: 1729605 bytes, checksum: 48dd1bd05f0e954a3dd14fb20b162e2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2012-02-03 === Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES === Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq === Introduction: Leishmaniasis is a tropical zoonoses that is endemic, causing different clinical forms including cutaneous, diffuse, disseminated, mucosal and visceral manifestations. The L. (V.) braziliensis is the most common parasite found in cutaneous leishmaniasis in Brazil and is the major agent for the mucosal leishmaniasis. The manifestation of the disease and the clinical forms are dependent on several factors related between the parasite and host. Objective: The aim of this study was to compare the ability of amastigote parasite isolated from patients with cutaneous or mucosal leishmaniasis to stimulate the production of cytokines in peripheral blood mononuclear cells cultures (PBMC) obtained from health donors. Methods: Isolates of patients with cutaneous or mucosal lesion were inoculated in IFNγ knockout mice to obtain amastigotes, which were purifyed by density using Percoll. The PBMCs from healthy individuals were separated by density using Ficoll. The cells were incubated in cultures at different times with amastigotes and then the supernatant were collect to quantify cytokines by ELISA or cells that are used to quantify cytokines using the real time PCR. Results: PBMCs produced higher amounts of IL-1β, IL-6, IL-10 and TGFβ in cultures after stimulation with amastigotes than uninfected controls. When comparing isolates from cutaneous or mucosal disease it was not found differerence regarding to the production of IL-6, IL-10 and TGFβ, but amastigotes from patients with cutaneous leishmaniasis induced more IL-1β than in parasites obtained from mucosal lesion. Production of IFNγ IL17, and TNF was was not detected at different times after stimulation with L. (V.) braziliensis amastigotes. Conclusion: The results suggest that amastigotes of patients with cutaneous leishmaniasis interact with innate immunity cells by inducing the production of proinflammatory or anti-inflammatory and isolated from mucosal lesions induce less IL-1 than parasites obtained from skin lesions. The greatest amount of IL-1 promotes an inflammatory response with migration of cells to the site of infection, so a low xvii production would cause a slower disease and would prejudice an effective acquired response. Thus, the parasite would be able to survive longer in host in a silent way. === Introdução: A leishmaniose é uma zoonose tropical endêmica com diferentes formas clínicas, incluindo as formas cutânea, difusa, disseminada, mucosa e visceral. L. (V.) braziliensis é o parasito mais comumente encontrado na leishmaniose tegumentar no Brasil sendo, o principal agente da leishmaniose mucosa. A manifestação da doença e as formas clínicas existentes são dependentes de diversos fatores relacionados ao parasito e ao hospedeiro. Objetivo: Comparar a habilidade de formas amastigotas isoladas de pacientes com leishmaniose cutânea ou mucosa em estimular a produção de citocinas em células mononucleares do sangue periférico (PBMCs) obtidas de doadores sadios. Métodos: Isolados obtidos de pacientes com lesões cutâneas ou mucosas foram inoculados em camundongos deficientes de IFNγ para obtenção de formas amastigotas, que foram separadas por gradiente de densidade usando o Percoll. As PBMCs de indivíduos sadios foram separadas por gradiente de densidade usando o Ficoll e cultivadas por diferentes tempos com as formas amastigotas. O sobrenadante foi coletado para quantificar as citocinas por ELISA e as células restantes foram lisadas para análise do mRNA para citocinas usando o PCR em tempo real. Resultados: As PBMCs produziram IL-1β, IL-6, IL-10 e TGFβ em culturas após a estimulação com amastigotas. Os isolados de lesões cutâneas produziram quantidades semelhantes de IL-6, IL-10 e TGFβ quando comparados com isolados de lesões mucosas. Formas amastigotas obtidas de pacientes com leishmaniose cutânea induziram uma maior produção de IL-1β do que parasitos obtidos de lesões mucosas. A produção de IFNγ, IL-17, e TNF não foi detectada em todos os tempos avaliados, após a estimulação com amastigotas de L. (V.) braziliensis. Conclusão: Os resultados sugerem que formas amastigotas de pacientes com leishmaniose tegumentar interagem com células da imunidade inata, induzindo a produção de citocinas pró e anti inflamatórias, sendo que isolados oriundos de lesão mucosa induzem menos IL-1 do que parasitos obtidos de lesões cutâneas. A maior quantidade de IL-1 favorece uma resposta inflamatória com a migração de células para xv o local da infecção. Uma baixa produção dessa citocina faria com que a doença fosse mais lenta prejudicando a formação de uma resposta adquirida eficiente. Portanto, o parasito poderia ser capaz de sobreviver por um tempo maior no hospedeiro de uma maneira silenciosa, causando a forma mucosa.
author2 Oliveira, Milton Adriano Pelli de
author_facet Oliveira, Milton Adriano Pelli de
Gomes, Clayson Moura
author Gomes, Clayson Moura
author_sort Gomes, Clayson Moura
title Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis
title_short Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis
title_full Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis
title_fullStr Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis
title_full_unstemmed Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis
title_sort produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de leishmania(viannia) braziliensis
publisher Universidade Federal de Goiás
publishDate 2014
url http://repositorio.bc.ufg.br/tede/handle/tede/3199
work_keys_str_mv AT gomesclaysonmoura producaodecitocinasporcelulasmononucleareshumanasestimuladasporformasamastigotasdeleishmaniavianniabraziliensis
AT gomesclaysonmoura cytokineproductionbyhumanmononuclearcellsestimulatedbyamastigotesofleishmaniavianniabraziliensis
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spelling ndltd-IBICT-oai-repositorio.bc.ufg.br-tede-31992019-01-21T22:23:30Z Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis Cytokine production by human mononuclear cells estimulated by amastigotes of Leishmania(Viannia) braziliensis Gomes, Clayson Moura Oliveira, Milton Adriano Pelli de Cruvinel, Wilson de Melo Pfrimer, Irmtraut Araci Hoffmann Oliveira, Milton Adriano Pelli de Leishmania (Viannia) braziliensis Leishmaniose cutânea Leishmaniose mucosa Células mononucleares Citocina Human Leishmaniasis CIENCIAS BIOLOGICAS::IMUNOLOGIA Submitted by Erika Demachki (erikademachki@gmail.com) on 2014-09-26T20:15:20Z No. of bitstreams: 2 Clayson Gomes - 2012 - dissertação.pdf: 1729605 bytes, checksum: 48dd1bd05f0e954a3dd14fb20b162e2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Approved for entry into archive by Jaqueline Silva (jtas29@gmail.com) on 2014-09-26T21:28:37Z (GMT) No. of bitstreams: 2 Clayson Gomes - 2012 - dissertação.pdf: 1729605 bytes, checksum: 48dd1bd05f0e954a3dd14fb20b162e2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Made available in DSpace on 2014-09-26T21:28:37Z (GMT). No. of bitstreams: 2 Clayson Gomes - 2012 - dissertação.pdf: 1729605 bytes, checksum: 48dd1bd05f0e954a3dd14fb20b162e2f (MD5) license_rdf: 23148 bytes, checksum: 9da0b6dfac957114c6a7714714b86306 (MD5) Previous issue date: 2012-02-03 Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPES Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq Introduction: Leishmaniasis is a tropical zoonoses that is endemic, causing different clinical forms including cutaneous, diffuse, disseminated, mucosal and visceral manifestations. The L. (V.) braziliensis is the most common parasite found in cutaneous leishmaniasis in Brazil and is the major agent for the mucosal leishmaniasis. The manifestation of the disease and the clinical forms are dependent on several factors related between the parasite and host. Objective: The aim of this study was to compare the ability of amastigote parasite isolated from patients with cutaneous or mucosal leishmaniasis to stimulate the production of cytokines in peripheral blood mononuclear cells cultures (PBMC) obtained from health donors. Methods: Isolates of patients with cutaneous or mucosal lesion were inoculated in IFNγ knockout mice to obtain amastigotes, which were purifyed by density using Percoll. The PBMCs from healthy individuals were separated by density using Ficoll. The cells were incubated in cultures at different times with amastigotes and then the supernatant were collect to quantify cytokines by ELISA or cells that are used to quantify cytokines using the real time PCR. Results: PBMCs produced higher amounts of IL-1β, IL-6, IL-10 and TGFβ in cultures after stimulation with amastigotes than uninfected controls. When comparing isolates from cutaneous or mucosal disease it was not found differerence regarding to the production of IL-6, IL-10 and TGFβ, but amastigotes from patients with cutaneous leishmaniasis induced more IL-1β than in parasites obtained from mucosal lesion. Production of IFNγ IL17, and TNF was was not detected at different times after stimulation with L. (V.) braziliensis amastigotes. Conclusion: The results suggest that amastigotes of patients with cutaneous leishmaniasis interact with innate immunity cells by inducing the production of proinflammatory or anti-inflammatory and isolated from mucosal lesions induce less IL-1 than parasites obtained from skin lesions. The greatest amount of IL-1 promotes an inflammatory response with migration of cells to the site of infection, so a low xvii production would cause a slower disease and would prejudice an effective acquired response. Thus, the parasite would be able to survive longer in host in a silent way. Introdução: A leishmaniose é uma zoonose tropical endêmica com diferentes formas clínicas, incluindo as formas cutânea, difusa, disseminada, mucosa e visceral. L. (V.) braziliensis é o parasito mais comumente encontrado na leishmaniose tegumentar no Brasil sendo, o principal agente da leishmaniose mucosa. A manifestação da doença e as formas clínicas existentes são dependentes de diversos fatores relacionados ao parasito e ao hospedeiro. Objetivo: Comparar a habilidade de formas amastigotas isoladas de pacientes com leishmaniose cutânea ou mucosa em estimular a produção de citocinas em células mononucleares do sangue periférico (PBMCs) obtidas de doadores sadios. Métodos: Isolados obtidos de pacientes com lesões cutâneas ou mucosas foram inoculados em camundongos deficientes de IFNγ para obtenção de formas amastigotas, que foram separadas por gradiente de densidade usando o Percoll. As PBMCs de indivíduos sadios foram separadas por gradiente de densidade usando o Ficoll e cultivadas por diferentes tempos com as formas amastigotas. O sobrenadante foi coletado para quantificar as citocinas por ELISA e as células restantes foram lisadas para análise do mRNA para citocinas usando o PCR em tempo real. Resultados: As PBMCs produziram IL-1β, IL-6, IL-10 e TGFβ em culturas após a estimulação com amastigotas. Os isolados de lesões cutâneas produziram quantidades semelhantes de IL-6, IL-10 e TGFβ quando comparados com isolados de lesões mucosas. Formas amastigotas obtidas de pacientes com leishmaniose cutânea induziram uma maior produção de IL-1β do que parasitos obtidos de lesões mucosas. A produção de IFNγ, IL-17, e TNF não foi detectada em todos os tempos avaliados, após a estimulação com amastigotas de L. (V.) braziliensis. Conclusão: Os resultados sugerem que formas amastigotas de pacientes com leishmaniose tegumentar interagem com células da imunidade inata, induzindo a produção de citocinas pró e anti inflamatórias, sendo que isolados oriundos de lesão mucosa induzem menos IL-1 do que parasitos obtidos de lesões cutâneas. A maior quantidade de IL-1 favorece uma resposta inflamatória com a migração de células para xv o local da infecção. Uma baixa produção dessa citocina faria com que a doença fosse mais lenta prejudicando a formação de uma resposta adquirida eficiente. Portanto, o parasito poderia ser capaz de sobreviver por um tempo maior no hospedeiro de uma maneira silenciosa, causando a forma mucosa. 2014-09-26T21:28:37Z 2012-02-03 info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/masterThesis GOMES, Clayson Moura. Produção de citocinas por células mononucleares humanas estimuladas por formas amastigotas de Leishmania(Viannia) braziliensis. 2012. 117 f. 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