Ala42S100A8 ameliorates psychological-stress impaired cutaneous wound healing

Herve Y. Sroussi, Richard L. Williams, Qing L. Zhang, Dana Villines, Phillip Marucha

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Although wound healing is generally a successful, carefully orchestrated and evolutionary sound process, it can be disregulated by extrinsic factors such as psychological-stress. In the SKH-1 restraint stress model of cutaneous wound healing, the rate of wound closure is approximately 30% slower in stressed mice. Delay in healing is associated with exaggerated acute inflammation and deficient bacterial clearance at the wound site. It has been suggested that wound hypoxia may contribute to the mechanisms of impaired cutaneous wound healing in the mouse SKH-1 model. Optimal healing of a cutaneous wound is a stepwise repair program. In its early phase, an inflammatory oxidative burst generated by neutrophils is observed. About 40% of neutrophils cytosolic protein weight is comprised of two calcium binding proteins S100A8 and S100A9. Our previous work has shown that S100A8 act as an oxidation-sensitive repellent of human neutrophils in-vitro. Ala42S100A8, a site-directed mutant protein is resistant to oxidative inhibition and inhibits neutrophil recruitment in-vivo. Accordingly, we tested the hypothesis that S100A8 may ameliorate wound healing in this model. We examined the effect of wild-type and ala42S100A8 for their ability to ameliorate wound closure rates. The data indicated that a single local application of ala42S100A8 ameliorated the decreased rate of wound closure resulting from stress. This occurred without significantly affecting wound bacterial clearance. Wild-type S100A8 only had a partial beneficial effect on the rate of wound closure. Those findings support further translational studies of S100 based intervention to ameliorate impaired wound healing.

Original languageEnglish (US)
Pages (from-to)755-759
Number of pages5
JournalBrain, Behavior, and Immunity
Volume23
Issue number6
DOIs
StatePublished - Aug 2009
Externally publishedYes

Fingerprint

Psychological Stress
Wound Healing
Skin
Wounds and Injuries
Neutrophils
Calcium-Binding Proteins
Aptitude
Respiratory Burst
Neutrophil Infiltration
Mutant Proteins
Inflammation
Weights and Measures
Proteins

Keywords

  • Bacterial clearance
  • Calprotectin
  • Cutaneous
  • Neutrophils
  • Oxidation
  • Psychological-stress
  • S100A8
  • Translational
  • Wound healing

ASJC Scopus subject areas

  • Immunology
  • Behavioral Neuroscience
  • Endocrine and Autonomic Systems

Cite this

Ala42S100A8 ameliorates psychological-stress impaired cutaneous wound healing. / Sroussi, Herve Y.; Williams, Richard L.; Zhang, Qing L.; Villines, Dana; Marucha, Phillip.

In: Brain, Behavior, and Immunity, Vol. 23, No. 6, 08.2009, p. 755-759.

Research output: Contribution to journalArticle

Sroussi, Herve Y. ; Williams, Richard L. ; Zhang, Qing L. ; Villines, Dana ; Marucha, Phillip. / Ala42S100A8 ameliorates psychological-stress impaired cutaneous wound healing. In: Brain, Behavior, and Immunity. 2009 ; Vol. 23, No. 6. pp. 755-759.
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