A novel mouse model of cutaneous radiation injury.

Abstract:

BACKGROUND:Radiation therapy is a cornerstone of oncologic treatment. Skin tolerance is often the limiting factor in radiotherapy. To study these issues and create modalities for intervention, the authors developed a novel murine model of cutaneous radiation injury. METHODS:The dorsal skin was isolated using a low-pressure clamp and irradiated. Mice were followed for 8 weeks with serial photography and laser Doppler analysis. Sequential skin biopsy specimens were taken and examined histologically. Tensiometry was performed and Young's modulus calculated. RESULTS:High-dose radiation isolated to dorsal skin causes progressive changes in skin perfusion, resulting in dermal thickening, fibrosis, persistent alopecia, and sometimes ulceration. There is increased dermal Smad3 expression, and decreased elasticity and bursting strength. CONCLUSIONS:This model of cutaneous radiation injury delivers reproducible localized effects, mimicking the injury pattern seen in human subjects. This technique can be used to study radiation-induced injury to evaluate preventative and therapeutic strategies for these clinical issues.

journal_name

Plast Reconstr Surg

authors

Thanik VD,Chang CC,Zoumalan RA,Lerman OZ,Allen RJ Jr,Nguyen PD,Warren SM,Coleman SR,Hazen A

doi

10.1097/PRS.0b013e3181fed4f7

subject

Has Abstract

pub_date

2011-02-01 00:00:00

pages

560-568

issue

2

eissn

0032-1052

issn

1529-4242

pii

00006534-201102000-00009

journal_volume

127

pub_type

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