An Experimental Model of Proton-Beam-Induced Radiation Dermatitis In Vivo.

Area of Science:

• Oncology
• Radiation Oncology
• Dermatology

Background:

• Radiation dermatitis (RD) is a frequent side effect of radiation therapy.
• Current treatments for RD are limited, and validated animal models using clinically relevant radiation sources are lacking.

Purpose of the Study:

• To develop and validate a preclinical model of acute radiation dermatitis using proton radiation in mice.
• To assess the efficacy of proton radiation in inducing reproducible RD and evaluate the impact of depilation.

Main Methods:

• Acute radiation dermatitis (Grade 2-4) was induced in mice using proton radiation at doses of 30, 40, and 50 Gy.
• The study included groups with and without depilation prior to irradiation.
• Histological analysis of skin tissue and assessment of animal vital signs were performed.

Main Results:

• Proton irradiation successfully induced acute radiation dermatitis with characteristic histological changes.
• Depilation influenced skin histology alterations in irradiated mice.
• Proton irradiation at the tested doses did not adversely affect the overall well-being or vital signs of the animals.

Conclusions:

• A validated mouse model for acute radiation dermatitis using proton radiation has been established.
• This model is suitable for studying the pathogenesis of radiation-induced skin toxicity and for developing therapeutic agents.
• The model facilitates research into proton beam therapy-related skin side effects.