Leukoplakia is considered one of the most significant potentially malignant disorders of the oral cavity. Chronic irritation, tobacco use, microbial factors, and immune disturbances contribute to epithelial hyperplasia, keratinization, and dysplastic changes. In many cases, progressive destructive and proliferative alterations may lead to malignant transformation into oral squamous cell carcinoma. Conventional clinical examination alone is insufficient for accurate evaluation of lesion severity and prognosis. Histopathological examination combined with molecular marker analysis allows more precise identification of high-risk lesions and facilitates optimization of therapeutic interventions. Therefore, studying molecular and morphological criteria in oral leukoplakia is highly relevant for improving early diagnosis, prevention, and treatment outcomes.
The aim of the study was to evaluate molecular and morphological criteria for assessing destructive and proliferative changes in the oral mucosa in patients with leukoplakia and to improve treatment methods based on the obtained diagnostic findings.
The study included 75 patients diagnosed with oral leukoplakia and 25 healthy individuals as a control group. Clinical examination and biopsy of oral lesions were performed in all patients. Histopathological analysis evaluated epithelial hyperkeratosis, acanthosis, dysplasia severity, cellular atypia, inflammatory infiltration, and destructive tissue alterations. Immunohistochemical studies were conducted to assess the expression of Ki-67, p53, cyclin D1, Bcl-2, and E-cadherin as markers of proliferation, apoptosis, and epithelial integrity. Patients received individualized treatment approaches including anti-inflammatory therapy, antioxidant treatment, local regenerative agents, and minimally invasive surgical procedures where indicated. Follow-up examinations were performed to evaluate treatment effectiveness and recurrence rates.
Morphological analysis revealed varying degrees of epithelial dysplasia and destructive tissue alterations in patients with leukoplakia. Increased expression of Ki-67, p53, and cyclin D1 was detected in lesions with pronounced proliferative activity and severe dysplastic changes. Reduced E-cadherin expression was associated with impaired epithelial cohesion and increased invasive potential. Elevated Bcl-2 levels indicated suppression of apoptosis in advanced lesions. Patients receiving individualized treatment based on molecular and morphological findings demonstrated improved epithelial regeneration, decreased inflammatory activity, and lower recurrence rates compared to conventional treatment approaches. Combined assessment of histopathological and molecular markers significantly improved diagnostic precision and prognostic evaluation.
Molecular and morphological criteria are highly valuable for assessing destructive and proliferative changes in oral leukoplakia. Integrated evaluation of histopathological alterations and molecular biomarkers improves early diagnosis, prediction of malignant transformation, and selection of optimal treatment strategies. Personalized therapeutic approaches based on molecular and morphological characteristics contribute to better clinical outcomes, reduced recurrence, and improved prevention of malignant progression in patients with oral leukoplakia.
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