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Related Concept Videos

Diabetic Foot Ulcer01:31

Diabetic Foot Ulcer

Definition A diabetic foot ulcer (DFU) is a chronic, non-healing wound that develops in individuals with diabetes. It typically occurs on pressure-bearing areas such as the heel, metatarsal heads, or hallux, and carries a high risk of infection and amputation.Pathophysiology • The development of DFUs can be explained by four interconnected mechanisms: neuropathy, ischemia, infection, and impaired wound healing. • Neuropathy is the most common factor. Sensory neuropathy reduces pain perception,...

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Come to the Light Side: In Vivo Monitoring of Pseudomonas aeruginosa Biofilm Infections in Chronic Wounds in a Diabetic Hairless Murine Model
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Protocol to Create Chronic Wounds in Diabetic Mice - an Update to the Published Protocol.

Jane Hannah Kim1, Parnian Jabbari1, Manuela Martins-Green2

  • 1Department of Molecular, Cell, and Systems Biology, University of California, Riverside.

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|August 25, 2025
PubMed
Summary

This study refines a chronic wound mouse model, improving survival rates and enabling deeper understanding of wound healing. The model mimics human diabetic wounds, aiding research into chronic wound development and treatment efficacy.

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Area of Science:

  • Wound Healing Research
  • Animal Models of Disease
  • Microbiology and Infectious Diseases

Background:

  • Chronic wound treatment remains challenging due to poorly understood healing disruptions.
  • Existing animal models inadequately replicate human chronic wound conditions.
  • A previously developed mouse model mimics human diabetic chronic wounds, including natural biofilm formation.

Purpose of the Study:

  • To present an updated protocol for a chronic wound mouse model with reduced mortality.
  • To detail the application of this model in understanding wound chronicity using advanced techniques.
  • To demonstrate the model's utility in evaluating treatment efficacy.

Main Methods:

  • Refinement of an existing mouse model for chronic wound research.
  • Implementation of next-generation transcriptomic analyses for cellular and molecular insights.
  • Investigation of bacterial dynamics, including infection and biofilm development.
  • Assessment of treatment efficacy, including small molecule interventions.

Main Results:

  • Mortality in the mouse model significantly reduced from approximately 30% to 5%.
  • The model facilitates the study of wound chronicity initiation and progression.
  • Transcriptomic and bacterial analyses provide insights into chronic wound pathophysiology.
  • The model is validated as the only existing chronic wound model that fails to heal without intervention.

Conclusions:

  • The updated mouse model offers a more viable and informative platform for chronic wound research.
  • This model advances the understanding of the cellular, molecular, and microbial factors in chronic wound development.
  • It serves as a crucial tool for preclinical testing of novel therapeutic strategies for non-healing wounds.