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Minoxidil and wound contraction

M Polo1, D P Hill, G Carney

  • 1University of South Florida, Division of Plastic Surgery, USA.

Annals of Plastic Surgery
|November 5, 1997
PubMed
Summary
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Minoxidil does not inhibit wound contraction or scarring in vivo, despite in vitro findings. Silver sulfadiazine, however, did show significant wound contraction inhibition in this animal model.

Area of Science:

  • Dermatology
  • Wound Healing Research
  • Pharmacology

Background:

  • Minoxidil's in vitro effects suggest potential as a topical inhibitor of wound contraction and scarring.
  • In vitro studies indicate minoxidil may inhibit fibroblastic functions relevant to scarring.

Purpose of the Study:

  • To evaluate the in vivo efficacy of minoxidil in inhibiting wound contraction and scarring.
  • To determine if topical minoxidil supports in vitro findings in a live animal model.

Main Methods:

  • Standardized cutaneous wounds were created on Sprague-Dawley rats.
  • Wounds were treated daily with minoxidil, vehicles, or no treatment.
  • Wound contraction rates and tensile strength were analyzed post-closure.

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Main Results:

  • Minoxidil did not significantly inhibit wound contraction rates compared to controls.
  • Silver sulfadiazine significantly inhibited wound contraction, confirming model efficacy.
  • No significant differences in wound tensile strength were observed among groups.

Conclusions:

  • Topical minoxidil does not demonstrate significant in vivo inhibition of wound contraction.
  • The study does not support minoxidil's proposed use as an antifibrotic agent for wound healing.
  • The animal model effectively demonstrated the inhibitory effects of silver sulfadiazine on wound contraction.