Active clinical trials for "Lichen Planus, Oral"

Diabetes mellitus is among the most common chronic diseases, with significant and well documented impact on oral cavity health. Among the most common diseases of the oral cavity mucosa and complications in patients with impaired glucose metabolism and diabetes mellitus is oral lichen ruber (OLR), which according to World Health Organisation (WHO) is considered potentially malignant disorder. It was found that lichen ruber in diabetes mellitus has a much more aggressive clinical course in the form of atrophic-erosive and ulcerative lesions showing an increased tendency to malignant transformation. Although OLR etiology is unknown, evidence suggests cell-mediated autoimmune pathogenesis. OLR epithelial cells show anomalies in both enzymatic activity and carbohydrate metabolism, which may be related to hormones regulating carbohydrate, insulin and insulin-like growth factors 1 and 2 (IGF-1 and IGF-2) metabolism. The hypothesis of our research is that patients with diabetes mellitus and oral lichen ruber lesions will have a disturbance of insulin-like growth factors 1 and 2 and hence a greater risk of malignant transformation, compared to patients with oral lichen ruber without diabetes and healthy patients without alterations in the oral mucosa.

Observational case-control study. The current study aims to assess the salivary expression of lncRNA DQ786243 and IL-17 in OLP, to better understand the pathogenesis of OLP and provide effective targets for OLP therapy.

The aim is to investigate the influence of oral lichen planus on periodontal status of systemically healthy individuals.

Oral lichen planus (OLP) is a chronic inflammatory and relapsing. The average prevalence is 1 to 4%. The clinics forms are many and symptoms are varied. The erosive form, painful and debilitating is characterized by erosive areas, ulcerated on an erythematous base with or without a keratinocyte lichenien network. The literature data moving towards an autoimmune origin, but the pathophysiological mechanisms of OLP remain unknown. This project represents the first part of a comprehensive project to examine the oral pathogenesis of different viruses (Herpes and papillomavirus HPV) and centered on Epstein-Barr Virus (EBV).

Synucleins are a family of small, highly conserved proteins found in vertebrates and are specially abundant in neurons particularly in presynaptic terminals (Surguchov et al., 2001). Gamma-synuclein is the third member of the synuclein family, and is predominantly found in the cytosol of tumor cells and functions both intra- and extra-cellularly. It is involved in the pathogenesis of different types of cancer and some neurodegenerative diseases (Liu et al., 2018). Smoking - a major risk factor for oral cancer and its progression - and nicotine-containing products were found to time-dependently up-regulate the Gamma-synuclein expression in cancer cells (Hsu et al., 2020a). Gamma-synuclein is released from tumor cells and was found to be elevated in tumors such as urinary bladder cancer (Liu et al., 2016), colorectal cancer, gastric adenocarcinomas and esophageal cancer (Liu et al., 2012). It is present in blood, serum, cerebrospinal fluid and saliva. The detection of extracellular synucleins in body fluids can reveal the first steps of the disease thus it can be used as a potential tool for early cancer detection (Surguchov, 2016). This study aims to identify the diagnostic accuracy of Gamma-synuclein in differentiating between oral malignant lesions and oral premalignant lesions.

The principal research objective is to provide enhanced understanding of the cellular and molecular events important in the pathogenesis of Oral Lichen Planus to enable improved diagnosis and development of novel treatments for patients.