Abstract

Atopic dermatitis (AD) is a chronic inflammatory skin disease that affects millions of people worldwide, characterized by immune function imbalance and impaired epidermal barrier function. It is a complex disorder that involves multiple pathogenic pathways, including the JAK/STAT signaling pathway, which plays a critical role in regulating immune and inflammatory responses. The therapeutic potential of Janus kinase inhibitors (JAKi) in the management of atopic dermatitis (AD) has garnered significant interest in recent years. AD is a chronic inflammatory skin condition characterized by impaired epidermal barrier function and immune function imbalance, and its pathogenesis is closely associated with dysregulated JAK/signal transducer and activator of transcription (STAT) signaling pathways. JAKi offer a novel therapeutic approach by selectively inhibiting JAK enzymes, thereby blocking downstream STAT signaling and preventing the expression of cytokines involved in AD pathogenesis. This review will focus on several JAKi including tofacitinib, baricitinib, ruxolitinib and upadacitinib, and provide a comprehensive overview of the latest research on the application of JAKi in AD treatment, including its mechanism of action, clinical trial results and safety profile.

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