Effectiveness of topical administration of platelet-rich plasma on the healing of methicillin-resistant Staphylococcus aureus-infected full-thickness wound model

J Plast Reconstr Aesthet Surg. 2023 Feb:77:416-429. doi: 10.1016/j.bjps.2022.11.059. Epub 2022 Dec 2.

Abstract

This study aimed to investigate the wound-healing activity of animal platelet-rich plasma (PRP) in wounds infected with methicillin-resistant Staphylococcus aureus (MRSA) in rats. After wound induction, the rats were divided into three groups: noninfected animals treated with PRP (PRP group), MRSA-infected animals treated with mupirocin (standard control group), and MRSA-infected animals treated with PRP (MRSA+PRP group). Scratch assays, MTT test, and live/dead cells were also investigated. Total bacterial count, parameters of wound area, histopathological assessment, and expressions of IL-1β, TNF-α, iNOS, PDGF, FGF-2, and TGF-β mRNA levels and immunofluorescent staining of CD31 and collagen type 1 were assessed. The results showed that culture with PRP increased migration. PRP only showed cytotoxicity in a concentration of 100%. Topical application of PRP (50 µL) reduced the wound area and total bacterial count compared with the control group (P<0.05). The mRNA levels of IL-1β, TNF-α, and iNOS expression on days 7 and 14 (P<0.05) decreased in the treated groups compared with control rats. The mRNA levels of PDGF and TGF-β expression (P<0.05) increased in the treatment groups compared with control rats on days 3 and 7 (P<0.05). FGF-2 expression was significantly higher in the treated groups compared with the control group on days 7 and 14 (P<0.05). Moreover, positive expressions of macrophage colony-stimulating factor (M-CSF), CD31, collagen type 1 and cytokeratin proteins keratinocyte proliferation, and re-epithelization were significantly (P<0.05) increased in both PRP and MRSA+PRP-treated groups compared with the control groups on days 7 and 14. Topical administration of PRP accelerated the wound healing in MRSA-infected wound by decreasing the inflammation and improving the proliferative phase.

Keywords: Cytokeratin proteins; Inflammatory cytokines; MRSA-infected wound; Platelet-rich plasma.

MeSH terms

  • Administration, Topical
  • Animals
  • Collagen Type I / metabolism
  • Fibroblast Growth Factor 2
  • Methicillin-Resistant Staphylococcus aureus* / metabolism
  • Platelet-Rich Plasma* / metabolism
  • RNA, Messenger / metabolism
  • Rats
  • Transforming Growth Factor beta / metabolism
  • Tumor Necrosis Factor-alpha / metabolism
  • Wound Healing
  • Wound Infection*

Substances

  • Tumor Necrosis Factor-alpha
  • Fibroblast Growth Factor 2
  • Collagen Type I
  • Transforming Growth Factor beta
  • RNA, Messenger