Abstract
Chronicity in wound healing is a challenge for health services financially and scientifically, with negative consequences on patients' lives. This paper seeks to explore why chronic wounds fail to heal in relation to the inflammatory cellular dysfunction associated with biofilm development. Findings demonstrate an association between chronic wounds failing to heal, the presence of devitalised tissue and abnormal immune cell activity with a consequential excessive release of harmful matrix metalloproteases (MMPs). This process perpetuates the cycle of wound chronicity and extracellular matrix destruction, which prolongs the inflammatory response, fuelling biofilm formation. Evidence suggests that 'trapping' MMPs may increase new tissue growth but, while devitalised tissue is present, phagocytic cells continue to secrete MMPs and chronicity persists. Consequently, by removing the trigger and implementing effective, sustained debridement of devitalised tissue, both MMP and biofilm production will be diminished, with positive healing outcomes.
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