Antioxidant sol-gel improves cutaneous wound healing in streptozotocin-induced diabetic rats

Exp Diabetes Res. 2012:2012:504693. doi: 10.1155/2012/504693. Epub 2012 Aug 7.

Abstract

We examined the effects of vitamin C in Pluronic F127 on diabetic wound healing. Full-thickness excision skin wounds were made in normal and diabetic Wistar rats to evaluate the effect of saline, saline plus vitamin C (antioxidant sol), Pluronic F127, or Pluronic F127 plus vitamin C (antioxidant sol-gel). The rate of wound contraction, the levels of epidermal and dermal maturation, collagen synthesis, and apoptosis production in the wound tissue were determined. In vitro data showed that after 6 hours of air exposure, the order of the scavenging abilities for HOCl, H(2)O(2), and O(2) (-) was antioxidant sol-gel > antioxidant saline > Pluronic F127 = saline. After 7 and 14 days of wound injury, the antioxidant sol-gel improved wound healing significantly by accelerated epidermal and dermal maturation, an increase in collagen content, and a decrease in apoptosis formation. However, the wounds of all treatments healed mostly at 3 weeks. Vitamin C in Pluronic F127 hastened cutaneous wound healing by its antioxidant and antiapoptotic mechanisms through a good drug delivery system. This study showed that Pluronic F127 plus vitamin C could potentially be employed as a novel wound-healing enhancer.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Antioxidants / metabolism
  • Antioxidants / pharmacology*
  • Apoptosis
  • Ascorbic Acid / metabolism
  • Diabetes Mellitus, Experimental / drug therapy*
  • Diabetes Mellitus, Experimental / metabolism*
  • Diabetes Mellitus, Experimental / physiopathology*
  • Drug Delivery Systems
  • Female
  • Hydroxyproline / chemistry
  • Immunohistochemistry / methods
  • Phase Transition
  • Poloxamer / pharmacology
  • Rats
  • Rats, Wistar
  • Reactive Oxygen Species / metabolism
  • Skin / pathology
  • Streptozocin / pharmacology*
  • Time Factors
  • Wound Healing*

Substances

  • Antioxidants
  • Reactive Oxygen Species
  • Poloxamer
  • Streptozocin
  • Ascorbic Acid
  • Hydroxyproline