Validation of microRNA expression profile in Oral Lichenoid Disease through cytological samples

  1. Amaia Setién Olarra 1
  2. Xabier Marichalar Mendia 1
  3. Juan-Alonso Fernández-Pacheco 2
  4. Marcos Fernández Barriales 2
  5. María Luisa Gainza Cirauqui 3
  6. José Manuel Aguirre Urizar 1
  1. 1 Oral Medicine and Pathology, Department of Stomatology II, UFI 11/25, University of the Basque Country (UPV/EHU). Leioa, Spain
  2. 2 Servicio de Cirugía Maxilofacial. Hospital Universitario Araba (Osakidetza. OSI Araba). Vitoria-Gazteiz, Spain
  3. 3 Department of Dental Surgery, Faculty of Dental Surgery, University of Malta. Msida, Malta
Medicina oral, patología oral y cirugía bucal. Ed. inglesa

ISSN: 1698-6946

Year of publication: 2019

Volume: 24

Issue: 5

Pages: 13

Type: Article

DOI: 10.4317/MEDORAL.23020 DIALNET GOOGLE SCHOLAR lock_openOpen access editor

More publications in: Medicina oral, patología oral y cirugía bucal. Ed. inglesa

Sustainable development goals


To validate oral exfoliative cytology in the analysis of the microRNA expression profile in Oral Lichenoid Disease (OLD). The expression of 13 microRNAs identified and presented by our group in a previous study was analyzed in 26 cases, 16 diagnosed as OLD and 10 controls with no oral mucosal pathology. Cytological samples from the oral mucosa obtained using an Orcellex toothbrush were analyzed using RT-qPCR and TaqMan microRNA assays. The aberrant expression was validated for 2 microRNAs (miR-146a-5p and miR-7-1-3p) of those previously recognized in the biopsy study. This is the first time that oral exfoliative cytology is validated in a study of the alterations of the expression of microRNAs in OLD. The alteration of miR-146a and miR-7 compared to controls was validated. These microRNAs are associated with both inflammatory and carcinogenic phenomena that are involved in the etiopathogenesis of this potentially malignant oral disorder.

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