Topical anti-inflammatory activity of palmitoleic acid improves wound healing

PLoS One. 2018 Oct 11;13(10):e0205338. doi: 10.1371/journal.pone.0205338. eCollection 2018.

Abstract

This study investigated the effects of palmitoleic acid on different phases of the healing process. Macroscopic analyses were performed on wounds in rats with or without palmitoleic acid treatment, and the results showed that palmitoleic acid directly hastened wound closure. The topical treatment of wounds with palmitoleic acid resulted in smaller wounds than those observed in the control group. The anti-inflammatory activity of palmitoleic acid may be responsible for healing, especially in the stages of granulation tissue formation and remodelling. Palmitoleic acid modified TNF-α, IL-1β, IL-6, CINC-2α/β, MIP-3α and VEGF-α profiles at the wound site 24, 48, 120, 216 and 288 hours post-wounding. Assays assessing neutrophil migration and exudate formation in sterile inflammatory air pouches revealed that palmitoleic acid had potent anti-inflammatory activity, inhibiting the LPS-induced release of TNF-α (73.14%, p≤0.05), IL-1β (66.19%, p≤0.001), IL-6 (75.19%, p≤0.001), MIP-3α (70.38%, p≤0.05), and l-selectin (16%, p≤0.05). Palmitoleic acid also inhibited LPS-stimulated neutrophil migration. We concluded that palmitoleic acid accelerates wound healing via an anti-inflammatory effect.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Administration, Topical
  • Animals
  • Anti-Inflammatory Agents / administration & dosage*
  • Cytokines / genetics
  • Fatty Acids, Monounsaturated / administration & dosage*
  • Gene Expression Regulation / drug effects
  • Humans
  • Inflammation / drug therapy*
  • Inflammation / genetics
  • Inflammation / pathology
  • Interleukin-1beta / genetics
  • Rats
  • Skin / drug effects
  • Skin / pathology
  • Tumor Necrosis Factor-alpha / genetics
  • Wound Healing / drug effects*
  • Wound Healing / genetics

Substances

  • Anti-Inflammatory Agents
  • Cytokines
  • Fatty Acids, Monounsaturated
  • Interleukin-1beta
  • Tumor Necrosis Factor-alpha
  • palmitoleic acid

Grants and funding

This research was supported by the Brazilian research funding agencies FAPESP (São Paulo Research Foundation, #14/03947-1 and #11/15360-7) and CNPq (National Council for Scientific and Technological Development (#307769/2014-3). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.