Is Involucrin Has a Role in Verruca Vulgaris? A Clinical and Immunohistochemical Study

Vitamin D3 plays important role in keratinocyte differentiation and had been used recently in verruca vulgaris. Aim of the work: To assess the expression of involucrin in verrucae vulgaris before and after injection of vitamin D3. Subjects and Methods: This study included 60 patients with verrucae vulgaris subjected to intralesional injection of vitamin D3 at three weeks interval for a maximum of five sessions. Immunohistochemical assessment of involucrin was done before and after injection and compared to skin biopsies from 30 healthy individuals