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Effect of Proteasome Inhibitor 1 on Wound Healing: A Potential Scar Prevention Therapy

Effect of Proteasome Inhibitor 1 on Wound Healing: A Potential Scar Prevention Therapy

John A Walker, Gianni Rossini, Michelle W Thompson, Joseph C Wenke, David Baer

Wounds. 2013 Feb;25(2):28-33.

PMID: 25867804

Abstract:

In vitro and in vivo assessments suggest that proteasome inhibitors may be useful for modulating wound healing.
Methods:
Proteasome Inhibitor I was used to assess the potential utility of proteasome inhibitors in improving wound healing in a standard rat model. Bilateral, 6 cm incisions were made 1 cm lateral to the spine of adult male Sprague Dawley rats. Animals were randomly assigned to 1 of 3 groups: no treatment (n = 15), low concentration (1% w/v, n = 15), or high concentration (5% w/v, n = 15). Treatments were applied to the left side incision at 0 hours, 24 hours, and 48 hours. Right-side incisionsreceived a vehicle, dimethyl sulfoxide, alone and independent of the assigned group, serving as both external and internal controls. Rats were sacrificed at days 7, 14, and 28 (n = 5 per group) and wounds subjected to mechanical testing and histology.
Results:
No significant intergroup difference existed at 7 and 14 days. On day 28, a dosedependent increase in tensile strength with increasing Proteasome Inhibitor I was observed.
Conclusion:
Results suggest dimethyl sulfoxide was not the ideal vehicle and additional improvement may be realized by optimizing the delivery method.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
IAR42410915	Proteasome Inhibitor I			Price

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