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Microscopic and functional changes observed with dynamic optical coherence tomography for severe refractory atopic
Marco Manfredini1, Serena Liberati2, Silvana Ciardo1
1Dermatology Unit, Department of Surgical, Medical, Dental & Morphological Sciences with Interest Transplant, Oncological & Regenerative Medicine, University of Modena & Reggio Emilia, Modena, Italy.
Background:
Atopic dermatitis (AD) is a chronic inflammatory disease. Recently, dupilumab was approved for moderate-to-severe AD. D-OCT is a noninvasive tool for the characterization of skin diseases.
Objective:
To describe the changes observed with D-OCT in lesional and clinically healthy skin of patients with refractory severe AD under dupilumab treatment.
Methods:
We analyzed AD lesions and healthy skin by D-OCT. Clinical scores of AD severity were assessed at baseline (T0) and after 1 and 3 months of treatment (T1, T2). Descriptive statistics, chi-square test, and t test were used to compare the analyzed parameters over time and between AD lesions and clinically healthy skin.
Results:
At baseline, average EASI was 45.7. During the follow-up, EASI75 and EASI90 were achieved in 57% and 36% of patients at T1 and 100% and 86% of patients at T2, respectively. Lesional skin D-OCT parameters related to epidermal remodeling and inflammation evidenced a significant improvement after 1 month of treatment. In clinically healthy skin, D-OCT parameters improved significantly after 3 months of treatment, especially for collagen remodeling and inflammation.
Conclusion:
The study demonstrates that the clinical improvement of severe AD patients under dupilumab treatment is correlated with specific D-OCT changes of patients' lesional and clinically healthy skin.
