Effects of intralesional platelets-rich plasma injections on oral lichen planus lesions and salivary interleukin-8

Abstract

Background: Oral lichen planus (OLP) is a chronic inflammatory disease of oral mucosal surfaces. Objective: The aim of this study was to determine if salivary IL-8 levels changed after autologous platelet-rich plasma (PRP) therapy and to assess its therapeutic effects on OLP. Materials and Methods: For each patient, demography, social, medical, and medication history was recorded. Before receiving 0.5 mL of PRP for each square centimeter of lesion, each patient was examined for phenotype, color, size, and site of OLP lesions. Patient’s salivary samples were taken between 8 and 11 AM. Three to four milliliters of saliva was obtained from each patient. ELISA kit for IL-8 using a sandwich-ELISA technique, to measure salivary IL-8 before and after PRP injections. Each patient had signed a consent form to participate in this study. Results: Thirteen OLP patients took part in this study, six males (46.2%) and seven females (53.8%). Patients were between 32 and 79 years of age, with a mean age of 60.2 ± 13.9 years. Mean salivary IL-8 was (459.94 ± 233.74 pg/mL) before PRP injections and (465.68 ± 158.30 pg/mL) after PRP injections with no significant difference; however, IL-8 was higher after PRP injections. No association was found in salivary IL-8 level in relation to color changes, signs, and symptoms; pain and burning sensation, lesion phenotype, size, and location. Conclusion: Majority of OLP lesions showed an increased salivary IL-8 level after PRP treatment. PRP injections relieved OLP lesions’ signs and symptoms, and turned hyperemic lesions into normal mucosal color, but lesions’ dimensions were resistant to change.