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Erschienen in: Clinical Oral Investigations 4/2019

19.09.2018 | Original Article

Reduced CD8+ T cells infiltration can be associated to a malignant transformation in potentially malignant oral epithelial lesions

verfasst von: Aline Lauda Freitas Chaves, Ana Gabriela Silva, Flávia Medeiros Maia, Gabriela Francine Martins Lopes, Luiz Fernando Barbosa de Paulo, Luciana Vieira Muniz, Hélio Batista dos Santos, João Marcos Arantes Soares, Alexandre Andrade Souza, Leandro Augusto de Oliveira Barbosa, Adriano Mota Loyola, Eddie Fernando Candido Murta, Márcia Antoniaze Michelin, Rosy Iara Maciel de Azambuja Ribeiro

Erschienen in: Clinical Oral Investigations | Ausgabe 4/2019

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Abstract

Objective

The aim of this study was to evaluate the immunohistochemical expressions of PD1, CD4+, and CD8+ in premalignant lesions (OPML) that were transformed into oral squamous cell carcinoma OSCC (OPML-OSCC), in OSCC and also in premalignant lesions that were not transformed into OSCC (OPML-NOSSC).

Materials and methods

Retrospective analyses were performed in order to verify the demographic characteristics of the patients. CD4, CD8, and PD1 IMH studies were carried out on OPML and OSCC samples from 11 patients with OPML-OSCC and OPML, together with samples from 14 patients with OPML-NOSCC. The differences between OPML-OSCC and OPML-NOSCC were analyzed.

Results

Non-homogenous leukoplakia, together with the related oral subsite, and the lack of an exposure to tobacco, were all associated with malignant transformations. There were no statistical differences in the PD1 expression and the CD4+ cells in OPML-OSCC and OPML-NOSCC. A significant increment in the CD8+ cells was noted in the OPML that evolved into carcinomas when compared with OPML-NOSCC (p = 0.05), whereas there were higher CD8+ cells levels in the carcinomas when compared with the OPML that evolved into carcinomas (p = 0.027).

Conclusions

CD8+ cells infiltrate more in OPML-NOSCC than in OPML-OSCC. Carcinoma is more infiltrated by CD8+ cells than its associated OPML.

Clinical relevance

Understanding immunological factors associated with malignant transformation of oral premalignant lesions can open a new way to treat this disease.
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Metadaten
Titel
Reduced CD8+ T cells infiltration can be associated to a malignant transformation in potentially malignant oral epithelial lesions
verfasst von
Aline Lauda Freitas Chaves
Ana Gabriela Silva
Flávia Medeiros Maia
Gabriela Francine Martins Lopes
Luiz Fernando Barbosa de Paulo
Luciana Vieira Muniz
Hélio Batista dos Santos
João Marcos Arantes Soares
Alexandre Andrade Souza
Leandro Augusto de Oliveira Barbosa
Adriano Mota Loyola
Eddie Fernando Candido Murta
Márcia Antoniaze Michelin
Rosy Iara Maciel de Azambuja Ribeiro
Publikationsdatum
19.09.2018
Verlag
Springer Berlin Heidelberg
Erschienen in
Clinical Oral Investigations / Ausgabe 4/2019
Print ISSN: 1432-6981
Elektronische ISSN: 1436-3771
DOI
https://doi.org/10.1007/s00784-018-2622-8

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