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. 2020 Nov;33(6):e13958.
doi: 10.1111/dth.13958. Epub 2020 Jul 25.

Total IgE, eosinophils, and interleukins 16, 17A, and 23 correlations in severe bullous pemphigoid and treatment implications

Florentina Silvia Delli  1 , Elena Sotiriou  1 , Elizabeth Lazaridou  2 , Zoe Apalla  2 , Aimilios Lallas  1 , Efstratios Vakirlis  1 , Spyros Gerou  3 , Konstantinos Bougioukas  4 , Demetrios Ioannides  1
Affiliations

Total IgE, eosinophils, and interleukins 16, 17A, and 23 correlations in severe bullous pemphigoid and treatment implications

Florentina Silvia Delli et al. Dermatol Ther. 2020 Nov.

Abstract

Bullous pemphigoid (BP) patients are predominantly above 70 years of age, with limited tolerance to the side effects of the immunosuppressive drugs. Advancements in our understanding of the pathophysiology of BP have led to the development of molecules which target specific pathways involved in induction and perpetuation of disease. Patients with BP Disease Area Index above 60 and less than 100 were split into two groups-one with high and the other with normal levels of IgE. The tested parameters included eosinophils' count, total IgE serum level, and interleukins (IL) 16, 17A, and 23 counts in the peripheral blood and skin bulla serum, before any therapeutic intervention. Thirty individuals fulfilled the criteria for enrollment. Patients with high IgE blood serum levels had significantly higher levels of IL17A and normal IL23 levels in blood and bulla serum. Patients with normal serum IgE levels had slightly higher IL23 levels in blood and bulla serum. The eosinophil count was positively related to IL17 blood serum level and negatively related to IL23. IL16 did not differ in the two groups. BP patients may represent a group of patients benefiting most substantially from the introduction of nonimmunosuppressive therapeutics into the treatment regimens for their disease. Clinical criteria and immune biomarkers are needed for making the best therapeutic choice.

Keywords: IL-16; IL-17A; IL-23; IgE; bullous pemphigoid; eosinophils.

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