Longitudinal Evaluation of Biomarkers in Wound Fluids from Venous Leg Ulcers and Split-thickness Skin Graft Donor Site Wounds Treated with a Protease-modulating Wound Dressing

Jacek Mikosiński*, Konstantinos Kalogeropoulos*, Louise Bundgaard, Cathrine Agnete Larsen, Simonas Savickas, Aleksander Moldt Haack, Konrad Pańczak, Katarzyna Rybołowicz, Tomasz Grzela, Michał Olszewski, Piotr Ciszewski, Karina Sitek-Ziółkowska, Krystyna Twardowska-Saucha, Marek Karczewski, Daniel Rabczenko, Agnieszka Segiet, Patrycja Buczak-Kula, Erwin M. Schoof, Sabine A. Eming, Hans Smola*Ulrich Auf dem Keller

*Corresponding author for this work

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Abstract

Venous leg ulcers represent a clinical challenge and impair the quality of life of patients. This study examines impaired wound healing in venous leg ulcers at the molecular level. Protein expression patterns for biomarkers were analysed in venous leg ulcer wound fluids from 57 patients treated with a protease-modulating polyacrylate wound dressing for 12 weeks, and compared with exudates from 10 acute split-thickness wounds. Wound healing improved in the venous leg ulcer wounds: 61.4% of the patients with venous leg ulcer achieved a relative wound area reduction of ≥ 40%, and 50.9% achieved a relative wound area reduction of ≥ 60%. Within the first 14 days, abundances of S100A8, S100A9, neutrophil elastase, matrix metalloproteinase-2, and fibronectin in venous leg ulcer exudates decreased significantly and remained stable, yet higher than in acute wounds. Interleukin-1β, tumour necrosis factor alpha, and matrix metalloproteinase-9 abundance ranges were similar in venous leg ulcers and acute wound fluids. Collagen (I) α1 abundance was higher in venous leg ulcer wound fluids and was not significantly regulated. Overall, significant biomarker changes occurred in the first 14 days before a clinically robust healing response in the venous leg ulcer cohort.
Original languageEnglish
Article number325
JournalActa Dermato-Venereologica
Volume102
Number of pages9
ISSN0001-5555
DOIs
Publication statusPublished - 2022

Keywords

  • Dressings
  • Biomarker
  • Proteomics
  • Venous ulcer
  • Exudate

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