Recent Update on Immunopathogenesis of Psoriasis

Area of Science:

• Immunodermatology
• Inflammatory disease research
• Genetics of autoimmune disorders

Background:

• Psoriasis is a chronic, disabling inflammatory disorder affecting skin, nails, and joints, with significant genetic and environmental influences.
• Pathogenesis involves epidermal keratinocyte hyperproliferation, abnormal differentiation, and immune cell infiltration, particularly T cells.
• Associated systemic comorbidities and periods of exacerbation/remission complicate disease management.

Purpose of the Study:

• To review current understanding of psoriasis immunopathogenesis.
• To highlight advancements in identifying genetic and molecular mechanisms.
• To discuss the impact of targeted biologic therapies on disease management.

Main Methods:

• Review of immunological and genetic studies over the last decade.
• Analysis of current disease models focusing on Th1/Th17 responses and cytokine networks.
• Evaluation of therapeutic strategies, including cytokine-targeting biologics.

Main Results:

• Identification of genetic susceptibility risk alleles and key molecular pathways.
• Emphasis on the role of TNF-α, IL-17, and IL-23 in Th1/Th17-driven inflammation.
• Biologic therapies targeting IL-17, IL-23, and TNFα have revolutionized severe psoriasis management, benefiting skin, joints, and systemic inflammation.

Conclusions:

• Further elucidation of psoriasis immunopathogenesis will enable precision medicine approaches.
• Understanding the interplay between psoriasis and comorbidities is crucial for comprehensive patient care and improved quality of life.