Head and neck dermatitis is exacerbated by colonization, skin barrier disruption, and immune dysregulation.

Introduction & Objectives: Head and neck dermatitis (HND) is a refractory phenotype of atopic dermatitis (AD) and can be a therapeutic challenge due to lack of responsiveness to conventional treatments. Previous studies have suggested that the microbiome and fungiome may play a role in inducing HND, but the underlying pathogenic mechanisms remain unknown. This study aimed to determine the link between HND and fungiome and to examine the contribution of .

RAB25 coordinates filaggrin-containing keratohyalin granule maturation and affects atopic dermatitis severity.

Background: Keratohyalin granules (KHGs) supply the critical epidermal protein constituents such as filaggrin for maintaining skin barrier function during epidermal differentiation; however, their regulating mechanism remains largely unelucidated.

Methods: To investigate the role of Ras-related protein Rab-25 (RAB25) expression in skin disease, we utilized skin specimens of patients with moderate-to-severe atopic dermatitis (AD) and healthy controls. To investigate the susceptibility of Rab25 knockout mice to AD, we established an oxazolone-induced AD model.

Microneedle Transdermal Drug Delivery Systems for Allergen-Specific Immunotherapy, Skin Disease Treatment, and Vaccine Development.

Transdermal drug delivery systems (TDDSs) overcome the hurdle of an intact skin barrier by penetrating the skin to allow molecules through. These systems reduce side effects associated with conventional hypodermic needles. Here, we introduce novel microneedle (MN) TDDSs that enhance drug delivery by creating micron-sized pores across the skin.

Skin-resident natural killer T cells participate in cutaneous allergic inflammation in atopic dermatitis.

Background: Natural killer T (NKT) cells are unconventional T cells that bridge innate and adaptive immunity. NKT cells have been implicated in the development of atopic dermatitis (AD).

Objective: We aimed to investigate the role of NKT cells in AD development, especially in skin.