Immunologic Overlap of Helper T-Cell Subtypes 17 and 22 in Erythrodermic Psoriasis and Atopic Dermatitis

JAMA Dermatology
Andrea Primiani MoyRosalynn M Nazarian

Abstract

Psoriasis and atopic dermatitis (AD) are inflammatory diseases thought to be mediated by helper T-cell subtypes 1 and 2 (TH1 and TH2), respectively. Although psoriasis and AD show histopathologic differences during chronic disease, they are difficult to distinguish histologically during erythrodermic exacerbations. To determine whether the immune phenotype of helper T cells can differentiate erythrodermic psoriasis and erythrodermic AD by studying skin biopsy specimens of patients with psoriasis and AD during erythrodermic and chronic disease phases. We conducted a retrospective study using biopsy samples of psoriasis, AD, and erythroderma belonging to the surgical pathology files of the James Homer Wright Pathology Laboratories, Massachusetts General Hospital, and collected from January 1, 2004, through December 31, 2011. Samples were obtained from patients with chronic psoriasis (n = 20), chronic AD (n = 20), erythroderma subsequently diagnosed as psoriasis (n = 7), and erythroderma subsequently diagnosed as AD (n = 5). We evaluated immunohistochemical stains for CD3 and dual stains for CD4 and T-bet, GATA binding protein 3 (GATA3), signal transducer and activator of transcription 3 (STAT3), or basonuclin 2 (BNC2), which are ...Continue Reading

Citations

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