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Protocol to Create Chronic Wounds in Diabetic Mice
Published on: September 25, 2019
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Low mortality oxidative stress murine chronic wound model
Adriana C Panayi1, Yori Endo1, Mehran Karvar1
1Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
BMJ Open Diabetes Research & Care
|September 9, 2020
Summary
This study developed a new chronic wound model in diabetic mice using antioxidant enzyme inhibitors, achieving zero mortality. The model shows delayed healing and increased inflammation, offering a promising tool for developing new wound therapeutics.
Area of Science:
- Biomedical Science
- Wound Healing Research
- Diabetic Complications
Background:
- Developing reliable chronic wound models is challenging.
- Previous antioxidant enzyme inhibitor models had high mortality rates.
- This study aimed to refine these models for better therapeutic development.
Purpose of the Study:
- To establish a reproducible chronic wound model in db/db mice.
- To reduce mortality associated with antioxidant enzyme inhibitor treatment.
- To investigate the effects of modified inhibitor dosages on wound healing.
Main Methods:
- Diabetic db/db mice received modified doses of catalase and glutathione peroxidase inhibitors.
- One group was treated with a collagen-glycosaminoglycan scaffold.
- Wound healing parameters were compared to a diabetic control group.
Main Results:
- A chronic wound model was successfully induced with no animal deaths.
- Antioxidant enzyme inhibition delayed wound contraction and increased inflammation.
- While angiogenesis was enhanced, vessels were immature; scaffolds showed poor engraftment but improved vessel maturation.
Conclusions:
- The modified antioxidant enzyme inhibitor regimen creates a chronic wound model arrested in the inflammatory stage.
- This model provides a valuable platform for testing novel wound healing therapies.
- Further research may optimize scaffold use for improved therapeutic outcomes.
