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Inhibition of nuclear factor-kappaB and p38 mitogen-activated protein kinase does not always have adverse effects on

Adrian O'Sullivan1, Diarmuid O'Malley, John Coffey

  • 1Department of Academic Surgery, University College Cork, Cork, Ireland. awmos@btinternet.com

Surgical Infections
|August 7, 2009
PubMed
Abstract

Insights

Inhibiting p38 mitogen-activated protein kinase (MAPK) and nuclear factor-kappaB (NF-kappaB) did not impair wound healing in mice. These findings suggest potential safety for treating inflammatory and septic conditions.

Area of Science:

  • Molecular Biology
  • Immunology
  • Wound Healing Research

Background:

  • p38 MAPK and NF-kappaB activation are crucial for inflammation and fibroblast function in wound healing.
  • Inhibiting these pathways may offer sepsis treatment strategies but could affect healing.
  • This study investigated the impact of p38 and NF-kappaB inhibition on incision healing.

Purpose of the Study:

  • To evaluate the effects of inhibiting p38 activation and NF-kappaB translation on incision healing.
  • To determine if these inhibitors interfere with the inflammatory processes essential for wound repair.

Main Methods:

  • Male mice underwent dorsal slit incisions and were randomized into control, p38 inhibitor (SB-202190), and NF-kappaB inhibitor (SN-50) groups.
  • Incision sites were assessed for histologic changes and breaking strength at 3 and 7 days.
  • Circulating cytokine levels (TNF-alpha, IL-6) were analyzed.

Main Results:

  • Neither SB-202190 nor SN-50 significantly affected incision strength or histologic healing.
  • Cytokine levels showed no significant differences at day 3; TNF-alpha was higher in the SB-202190 group at day 7.
  • No adverse effects on inflammation or collagen deposition were observed.

Conclusions:

  • Inhibition of p38 and NF-kappaB pathways does not adversely impact incision healing.
  • These findings suggest that targeting these pathways may be safe for clinical use in inflammatory and septic conditions.
  • The inflammation necessary for normal healing appears unaffected by these inhibitors.

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