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  • Title: Effectiveness of photodynamic therapy as an adjunct to topical antiviral therapy in the treatment of herpes labialis: A randomized controlled clinical trial.
    Author: Ajmal M.
    Journal: Photodiagnosis Photodyn Ther; 2021 Jun; 34():102302. PubMed ID: 33894370.
    Abstract:
    BACKGROUND: The present clinical trial assessed the effectiveness of photodynamic therapy in association with topical acyclovir in the treatment of herpes labialis in adolescent patients. MATERIALS AND METHODS: 45 individuals with herpes labialis were divided into three groups on the basis of provision of treatment. (a) Group I: Topical acyclovir therapy (AVT) (n = 15, mean age: 17.5 years) (b) Group 2: photodynamic therapy (PDT) (n = 15, mean age:16.8 years) and (c) Group III: AVT + adjunctive PDT (n = 15, mean age: 17.0 years) respectively. HSV-1 quantification and pain scales [visual analogue scale (VAS) and McGill Pain Questionnaire (MPQ)] were calculated. Pro-inflammatory biomarkers including interleukin (IL-6) and tumor necrosis factor-alpha (TNF-α) were quantified using enzyme linked immunosorbent assay (ELISA). Shapiro-Wilk test was used to assess the normality. The Friedman test was employed to compute the comparison for changes recorded in pain scores, proinflammatory cytokines and HSV-1 quantification, whereas Mann-Whitney test was used to analyze the mean values and establish inter-group comparisons. All assessments were performed at baseline, immediate post op, 2-weeks, 4-weeks, 3-months, and 6-months. RESULTS: A total of 44 individuals completed the clinical trial. According to the data obtained from the clinical assessment, all the study groups reported a decrease in the parameters being observed. However, Group III (anti-viral (acyclovir) therapy + adjunctive PDT) showed a statistically significant decrease, in comparison to Group II (PDT) and Group I [AVT] respectively. The quantified HSV-1 among all groups showed significant reduction among all groups at each successive follow-up. However, Group-III (AVT + PDT) showed statistically significant reduction as compared to Groups I and II, respectively (p < 0.05). CONCLUSION: Topical anti-viral therapy with adjunctive PDT significantly helped in reducing the pain and pro-inflammatory biomarkers in adolescent herpes labialis patients.
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