Author response for "The association between Epstein‐Barr virus and oral lichen planus: A systematic review and meta‐analysis"

Author(s):  
Sajna Ashraf ◽  
Sadeq Ali Al‐Maweri ◽  
Nader Alaizari ◽  
Ayesha Umair ◽  
Zaihan Ariffin ◽  
...  
2020 ◽  
Vol 49 (10) ◽  
pp. 969-976
Author(s):  
Sajna Ashraf ◽  
Sadeq A. Al‐Maweri ◽  
Nader Alaizari ◽  
Ayesha Umair ◽  
Zaihan Ariffin ◽  
...  

2018 ◽  
Vol 97 (13) ◽  
pp. 1494-1500 ◽  
Author(s):  
H. Raybaud ◽  
C.V. Olivieri ◽  
L. Lupi-Pegurier ◽  
S. Pagnotta ◽  
R. Marsault ◽  
...  

Epstein-Barr virus (EBV), in addition to its transforming properties, contributes to the pathogenesis of several inflammatory diseases. Here, we investigated its involvement in oral lichen planus (OLP), a common autoimmune-like disease of unknown etiopathogenesis that can display a malignant potential. EBV-infected cells (EBV+ cells) were sought in a large series of clinically representative OLPs ( n = 99) through in situ hybridization to detect small noncoding EBV-encoded RNAs. Overall, our results demonstrated that EBV was commonly found in OLP (74%), with significantly higher frequency (83%) in the erosive form than in the reticular/keratinized type mild form (58%). Strikingly, many erosive OLPs were massively infiltrated by large numbers of EBV+ cells, which could represent a large part of the inflammatory infiltrate. Moreover, the number of EBV+ cells in each OLP section significantly correlated with local inflammatory parameters (OLP activity, infiltrate depth, infiltrate density), suggesting a direct relationship between EBV infection and inflammatory status. Finally, we characterized the nature of the infiltrated EBV+ cells by performing detailed immunohistochemistry profiles ( n = 21). Surprisingly, nearly all EBV+ cells detected in OLP lesions were CD138+ plasma cells (PCs) and more rarely CD20+ B cells. The presence of EBV+ PCs in erosive OLP was associated with profound changes in cytokine expression profile; notably, the expression of key inflammatory factors, such as IL1-β and IL8, were specifically increased in OLP heavily infiltrated with EBV+ PCs. Moreover, electron microscopy–based experiments showed that EBV+ PCs actively produced EBV viral particles, suggesting possible amplification of EBV infection within the lesion. Our study thus brings conclusive evidence showing that OLP is commonly infiltrated with EBV+ PCs, adding a further puzzling element to OLP pathogenesis, given that PCs are now considered to be major regulatory immune cells involved in several autoimmune diseases (ClinicalTrials.gov NCT02276573).


2015 ◽  
Vol 69 (4) ◽  
pp. 358-363 ◽  
Author(s):  
Rúbia da Rocha Vieira ◽  
Lígia Lavezo Ferreira ◽  
Éder Ricardo Biasoli ◽  
Daniel Galera Bernabé ◽  
Cáris Maroni Nunes ◽  
...  

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