Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata

Detalhes bibliográficos
Autor(a) principal: Branco, Sandra
Data de Publicação: 2015
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/16572
Resumo: Various cases of multifocal to coalescent nodular skin lesions and lymph node enlargement, similar to multicentric malignant lymphoma, were registered in very young calves in the south of Portugal [1]. At necropsy, hemorrhagic nodules or nodules with a hemorrhagic halo were seen, particularly in the skin, subcutaneous tissue, skeletal and cardiac muscle, pharynx, trachea and intestinal serosa. Histologically nodules were formed by large, round, lymphoblastoid neoplastic-like cells. Immunohistochemistry identified these cells as mostly CD3 positive T lymphocytes and MAC387 positive macrophages. A marker for B lymphocytes (CD79αcy) labelled very few cells. Theileria annulata infected cells in these nodules were also identified by IHC, through the use of two monoclonal antibodies (1C7 and 1C12) diagnostic for the parasite. It was concluded that the pathological changes observed in the different organs and tissues were caused by proliferation of schizont-infected macrophages, which subsequently stimulate a severe uncontrolled proliferation of uninfected T lymphocytes.
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spelling Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulataTheileria annulatatropical theileriosiscattlelymphoid cell proliferationVarious cases of multifocal to coalescent nodular skin lesions and lymph node enlargement, similar to multicentric malignant lymphoma, were registered in very young calves in the south of Portugal [1]. At necropsy, hemorrhagic nodules or nodules with a hemorrhagic halo were seen, particularly in the skin, subcutaneous tissue, skeletal and cardiac muscle, pharynx, trachea and intestinal serosa. Histologically nodules were formed by large, round, lymphoblastoid neoplastic-like cells. Immunohistochemistry identified these cells as mostly CD3 positive T lymphocytes and MAC387 positive macrophages. A marker for B lymphocytes (CD79αcy) labelled very few cells. Theileria annulata infected cells in these nodules were also identified by IHC, through the use of two monoclonal antibodies (1C7 and 1C12) diagnostic for the parasite. It was concluded that the pathological changes observed in the different organs and tissues were caused by proliferation of schizont-infected macrophages, which subsequently stimulate a severe uncontrolled proliferation of uninfected T lymphocytes.Experimental Pathology and Health Science: Research, Clinics, Teaching and Society2016-01-07T10:47:51Z2016-01-072015-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/16572http://hdl.handle.net/10174/16572porExperimental Pathology and Health Science: Research, Clinics, Teaching and Society 7 (1), 53.1646-8414smbb@uevora.pt381Branco, Sandrainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T19:03:27Zoai:dspace.uevora.pt:10174/16572Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:08:56.326670Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
title Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
spellingShingle Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
Branco, Sandra
Theileria annulata
tropical theileriosis
cattle
lymphoid cell proliferation
title_short Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
title_full Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
title_fullStr Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
title_full_unstemmed Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
title_sort Avaliação imunohistoquímica das lesões identificadas em vitelos infectados por Theileria annulata
author Branco, Sandra
author_facet Branco, Sandra
author_role author
dc.contributor.author.fl_str_mv Branco, Sandra
dc.subject.por.fl_str_mv Theileria annulata
tropical theileriosis
cattle
lymphoid cell proliferation
topic Theileria annulata
tropical theileriosis
cattle
lymphoid cell proliferation
description Various cases of multifocal to coalescent nodular skin lesions and lymph node enlargement, similar to multicentric malignant lymphoma, were registered in very young calves in the south of Portugal [1]. At necropsy, hemorrhagic nodules or nodules with a hemorrhagic halo were seen, particularly in the skin, subcutaneous tissue, skeletal and cardiac muscle, pharynx, trachea and intestinal serosa. Histologically nodules were formed by large, round, lymphoblastoid neoplastic-like cells. Immunohistochemistry identified these cells as mostly CD3 positive T lymphocytes and MAC387 positive macrophages. A marker for B lymphocytes (CD79αcy) labelled very few cells. Theileria annulata infected cells in these nodules were also identified by IHC, through the use of two monoclonal antibodies (1C7 and 1C12) diagnostic for the parasite. It was concluded that the pathological changes observed in the different organs and tissues were caused by proliferation of schizont-infected macrophages, which subsequently stimulate a severe uncontrolled proliferation of uninfected T lymphocytes.
publishDate 2015
dc.date.none.fl_str_mv 2015-01-01T00:00:00Z
2016-01-07T10:47:51Z
2016-01-07
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://hdl.handle.net/10174/16572
http://hdl.handle.net/10174/16572
url http://hdl.handle.net/10174/16572
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Experimental Pathology and Health Science: Research, Clinics, Teaching and Society 7 (1), 53.
1646-8414
smbb@uevora.pt
381
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dc.publisher.none.fl_str_mv Experimental Pathology and Health Science: Research, Clinics, Teaching and Society
publisher.none.fl_str_mv Experimental Pathology and Health Science: Research, Clinics, Teaching and Society
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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