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  • Title: Oral lichen planus: salival biomarkers cortisol, immunoglobulin A, adiponectin.
    Author: Lopez-Jornet P, Cayuela CA, Tvarijonaviciute A, Parra-Perez F, Escribano D, Ceron J.
    Journal: J Oral Pathol Med; 2016 Mar; 45(3):211-7. PubMed ID: 26216173.
    Abstract:
    BACKGROUND: Oral lichen planus (OLP) is a chronic mucocutaneous disease, inflammatory and autoimmune in character, in which the pathogenesis is not fully understood. Psychological stress has also been implicated in triggering or exacerbating the disease. OBJECTIVE: The aim of this study was to evaluate the psychological profile, sleep, and salivary biological markers-cortisol, immunoglobin A (IgA), and adiponectin - in patients with oral lichen planus (OLP). METHODS: The sample consisted of 65 patients (33 with OLP and 32 control patients). Patients completed hospital anxiety and depression scales (HADD, HADA). Questionnaires were used to assess sleepiness: the Pittsburgh sleep quality index (PSQI) and the Epworth sleepiness scale (ESS). A visual analog scale (VAS) was used for rating pain. Unstimulated whole saliva was evaluated, together with total proteins: cortisol, IgA, and adiponectin. RESULTS: Patients with OLP obtained significantly higher HADA and PSQI scores than control subjects (P = 0.001, P = 0.012, respectively). Total salivary protein (flow at rest) analysis found that total proteins were higher in the OLP group (P = 0.001). In the OLP group, IgA was 80.3 ± 51.3 vs. the control group 48.9 ± 32.8 (P = 0.005). Mean cortisol was 0.5 ± 0.3 μg/dl in the OLP group vs. 0.4 ± 0.2 μg/dl in the control group (P = 0.010). The OLP group showed a correlation between the HADA variable and pain (r = 0.358; P = 0.041), HADD (r = 0.568; P = 0.001), and PSQI (r = 0.537; P = 0.001). CONCLUSIONS: OLP patients presented worse psychological profiles and sleep disturbances, as well as higher values for IgA, cortisol, and total proteins than control subjects.
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