Indivíduos em região endêmica para Leishmania braziliensis exibem níveis mais baixos de CD45RO em células T

Autores

DOI:

https://doi.org/10.33448/rsd-v11i5.28255

Palavras-chave:

Citometria de fluxo; Leishmaniose; Cutânea; Doença negligenciada ; Linfócitos T.

Resumo

A Leishmaniose cutânea (CL) é uma importante doença tropical negligenciada, que atinge cerca de 900 mil a 1,5 milhões de pessoas anualmente, principalmente no Brasil.  O presente estudo teve como objetivo caracterizar estas populações linfocitárias e a expressão do perfil do marcador CD45RO em pacientes com CL. Avaliamos as células T CD4+, CD8+, duplo positivo (DP) e duplo negativo (DN) e sua expressão do CD45RO em pacientes com Leishmaniose cutânea, divididos em três grupos: antes do tratamento (BT), pós-tratamento (PT) e subclínico (SC). As células T CD4+ tinham uma porcentagem maior nos grupos PT e SC quando comparadas ao grupo controle (CT). As células T CD4+ apresentaram uma maior expressão de CD45RO nos grupos BT e PT em comparação com o grupo SC, que teve uma expressão menor em comparação com o grupo CT. Os linfócitos CD8+ T apresentaram uma porcentagem maior em BT quando comparados com CT e uma expressão maior de CD45RO quando comparados com os grupos PT, SC e CT. Não observamos nenhum significado estatístico na porcentagem de linfócitos DP e DN, entretanto, notamos que os linfócitos DP apresentaram uma expressão menor de CD45RO no grupo SC quando comparados com o grupo CT, enquanto os linfócitos DN apresentaram uma expressão maior de CD45RO no grupo BT quando comparados com os outros grupos. As células T CD4+ parecem ser protetoras nestes pacientes e os linfócitos CD8+ T parecem estar associados à patogênese, enquanto os linfócitos DP CD45RO+ e DN CD45RO+ parecem desempenhar um papel duplo.

Biografia do Autor

Marton Kaique de Andrade Cavalcante, Instituto Aggeu Magalhães; Universidade Federal de Pernambuco

Marton Kaique de Andrade Cavalcante graduated in Nursing from the Federal University of Pernambuco (UFPE), has a master's degree (2020) in Therapeutic Innovation from UFPE. He is currently doing a PhD in Therapeutic Innovation from UFPE. Since his scientific initiation, he has been working on the immune response in patients with cutaneous leishmaniasis.

Rafael de Freitas e Silva, Universidade de Pernambuco

Rafael de Freitas e Silva graduated in Biomedicine from the Federal University of Pernambuco (UFPE), has a master's degree in Nuclear Energetic Technologies from UFPE and a doctorate in Therapeutic Innovation from UFPE. Since 2012, He is Adjunct Professor of Immunology at University of Pernambuco (UPE).

Valéria Rêgo Alves Pereira, Instituto Aggeu Magalhães

Valéria Rêgo Alves Pereira has a PhD in Cellular and Molecular Biology from the Oswaldo Cruz Foundation (2003). Currently she is a Senior Technologist in Public Health and responsible for the Flow Cytometry Core unit at Aggeu Magalhães Institute (IAM/FIOCRUZ/PE). She is part of the Ethics Committee in Human Research of IAM and a professor on the Post-Graduation programs of Therapeutic Innovation (UFPE) and Health Biosciences and Biotechnology (IAM). She leads the research group of Immunology of Infectious and Parasitic Diseases, has expertise in Immunology with emphasis in Immunoparasitology, acting mainly on the studies of the cellular and humoral responses of individuals who are susceptible to infectious and parasitic diseases in different stages of the pathological process, mainly with leishmaniasis.

Maria Carolina Accioly Brelaz-de-Castro, Universidade Federal de Pernambuco

Maria Carolina Accioly Brelaz-de-Castro graduated in Biomedicine from the Federal University of Pernambuco (UFPE), has a master's degree in Sciences from the Aggeu Magalhães Institute (IAM) and a doctorate (2013) and post-doctorate (2015) in Therapeutic Innovation from UFPE. She is currently a professor at UFPE and at the postgraduate program in Therapeutic Innovation, from the same University. She is a collaborator of IAM and a member of their flow cytometry core unit. She has experience in the fields of Immunology and Parasitology and her research group is focused on the development of immunological biomarkers and vaccines for infectious and parasitic diseases, mainly working with leishmaniasis.

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04/04/2022

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CAVALCANTE, M. K. de A. .; REHN, V. N. C. .; BRITO, M. E. F. de .; SILVA, R. de F. e .; PEREIRA, V. R. A. .; BRELAZ-DE-CASTRO, M. C. A. . Indivíduos em região endêmica para Leishmania braziliensis exibem níveis mais baixos de CD45RO em células T. Research, Society and Development, [S. l.], v. 11, n. 5, p. e22811528255, 2022. DOI: 10.33448/rsd-v11i5.28255. Disponível em: https://www.rsdjournal.org/index.php/rsd/article/view/28255. Acesso em: 19 maio. 2024.

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Ciências da Saúde