17 March 2017 : Clinical Research
Assessment of Neutrophil-to-Lymphocyte Ratio and Platelet-to-Lymphocyte Ratio in Atopic Dermatitis PatientsYing Jiang1ABCDEF, Wencong Ma2ABDEF*
Med Sci Monit 2017; 23:1340-1346
BACKGROUND: To develop new strategies for identifying atopic dermatitis patients, a better understanding of the signs for chronic inflammatory status is needed. This study was designed to investigate whether neutrophil-to-lymphocyte ratio (NLR) and platelet-to-lymphocyte ratio (PLR) are related to the severity of atopic dermatitis (AD) assessed by the Scoring Atopic Dermatitis (SCORAD) index.
MATERIAL AND METHODS: A retrospective study involving 80 AD patients and 45 healthy control subjects was performed. NLR, PLR, and the number of peripheral blood eosinophils were compared between AD patients and healthy controls, and correlations between these indexes and clinical characteristics were analyzed.
RESULTS: NLR, PLR, and eosinophils in AD patients were all significantly higher than in healthy individuals. Among AD patients, NLR (p<0.001) and PLR (p<0.001), as contrasted with eosinophils (p=0.146), were correlated positively with SCORAD index. Additionally, an NLR level of 1.75 was determined as the predictive cut-off value of severe AD (SCORAD ≥51) (sensitivity 94.7%, specificity 58.6%, the area under the receiver-operating characteristic curve (AUROC) 0.778, p=0.001). For eosinophils, the sensitivity and specificity were 78.9% and 62.1%, respectively, and the AUROC was only 0.685 (p=0.032) in predicting high SCORAD.
CONCLUSIONS: NLR and PLR reflect inflammatory response and disease severity in AD patients.
Keywords: Dermatitis, Atopic, Eosinophils, Neutrophils
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