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IL-18 and Cutaneous Inflammatory Diseases.

Ji Hyun Lee1, Dae Ho Cho2, Hyun Jeong Park3

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Interleukin-18 (IL-18), a key immune regulator, significantly contributes to skin inflammation by inducing interferon-gamma. This review clarifies IL-18

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Area of Science:

  • Immunology
  • Dermatology
  • Cytokine Biology

Background:

  • Interleukin-18 (IL-18) is a pleiotropic cytokine belonging to the IL-1 family.
  • IL-18 is recognized for its potent pro-inflammatory functions, notably its ability to induce interferon-gamma (IFN-γ).
  • While IL-18's role in various diseases is documented, its specific biological activities in diverse skin conditions remain incompletely understood.

Purpose of the Study:

  • To review the expression and function of IL-18 within the context of various skin diseases.
  • To elucidate the role of IL-18 in the pathogenesis of inflammatory skin conditions.
  • To provide an evidence-based understanding of IL-18's involvement in skin disease activity.

Main Methods:

  • Literature review of existing studies on IL-18 in skin diseases.
  • Analysis of research on IL-18 expression patterns in dermatological conditions.
  • Synthesis of data on the functional impact of IL-18 on skin inflammation and disease progression.

Main Results:

  • IL-18 is expressed in various skin compartments and plays a significant role in inflammatory skin diseases.
  • IL-18 contributes to disease pathogenesis through the induction of IFN-γ and other inflammatory mediators.
  • The level of IL-18 expression often correlates with the severity and activity of certain skin conditions.

Conclusions:

  • IL-18 is a critical mediator in the inflammatory processes underlying diverse skin diseases.
  • Understanding IL-18's function offers potential therapeutic targets for managing inflammatory dermatoses.
  • Further research into IL-18's specific mechanisms in skin disease is warranted.