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Related Experiment Videos

Immune response modification: imiquimod

S Tyring1

  • 1University of Texas Medical Branch, Galveston 77555, USA.

The Australasian Journal of Dermatology
|December 8, 1998
PubMed
Summary

Imiquimod cream effectively treats genital warts by stimulating the immune system to produce cytokines, reducing human papillomavirus (HPV) load and promoting wart regression without scarring.

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Area of Science:

  • Immunology
  • Dermatology
  • Virology

Background:

  • Imiquimod is an immune response modifier.
  • It is formulated as a 5% cream for treating external genital and perianal warts.
  • Imiquimod induces cytokine production, notably interferon-alpha, for antiviral effects.

Purpose of the Study:

  • To evaluate the mechanism of action of imiquimod in treating genital warts.
  • To determine if imiquimod's antiviral action is mediated by immune system activation.
  • To correlate wart regression with changes in viral load and cytokine expression.

Main Methods:

  • A double-blind, placebo-controlled study was conducted.
  • Patients with external genital and perianal warts were treated with imiquimod cream.
  • Measurements included viral load, cytokine expression, and wart regression.

Main Results:

  • Wart regression after imiquimod treatment strongly correlated with a decrease in virally infected cells.
  • Increased expression of various cytokines was observed.
  • These findings support imiquimod's role in stimulating local cytokines.

Conclusions:

  • Imiquimod stimulates local cytokines, leading to reduced human papillomavirus (HPV) load.
  • This immune stimulation results in wart regression.
  • Treatment with imiquimod does not cause scarring.

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