Πέμπτη 13 Απριλίου 2017

Salivary chromogranin A levels correlate with disease severity but do not reflect anxiety or personality of adult patients with atopic dermatitis

Abstract

Stress-induced scratching is an issue in patients with adult atopic dermatitis (AD). Although itching and stress are believed to be intimately related, no objective index is available; therefore, most evaluations are subjective. Using saliva, which is easily collected, we investigated the degree to which AD severity and patient stress levels are reflected in stress proteins in the saliva. Here, we evaluated the severity (Scoring Atopic Dermatitis [SCORAD] score), stress (State–Trait Anxiety Index [STAI] score), personality (Tokyo University Egogram [TEG] II score) and quality of life (Dermatology Life Quality Index [DLQI] score) of 51 patients with AD who were examined in the Department of Dermatology of Shimane University between April and December 2015. We collected saliva and measured salivary chromogranin A (CgA), amylase and cortisol. The amount of salivary CgA per protein in patients with AD was correlated with their SCORAD score (r = 0.458, P < 0.001). There was no correlation between cortisol or amylase levels and SCORAD score. SCORAD score was correlated with DLQI (r = 0.390, P = 0.006). CgA per protein was correlated with DLQI (r = 0.393, P = 0.004). There was no correlation between scores for the anxiety component of the STAI, TEG II or DLQI. Our results suggested that patients with more severe AD may have high stress levels. The personalities of these patients with AD tended to involve elevated anxiety levels.



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