[A new skin radioprotective agent Diethon (experimental study)].

Area of Science:

• Pharmacology
• Dermatology
• Radiation Oncology

Background:

• Radiogenic skin injuries are a common side effect of radiotherapy.
• Existing radioprotectors have limitations in efficacy and side effect profiles.

Purpose of the Study:

• To investigate the efficacy of diethone, a novel synthetic antioxidant, in preventing and treating radiogenic skin injuries.
• To compare diethone's radioprotective effects with existing agents.

Main Methods:

• Animal models exposed to beta and soft roentgen rays (20-60 Gy) during tele- or contact radiotherapy.
• Topical application of diethone ointment.
• Evaluation of skin reactions using intravital contact-luminescence microscopy, light, and electron microscopy.
• Pharmacokinetic analysis of 14C-diethone penetration.

Main Results:

• Diethone reduced the intensity and duration of radiation-induced skin reactions by over 50%.
• Significantly fewer and less severe radio reactions were observed in diethone-treated animals.
• Diethone demonstrated superior radioprotective effects compared to mexamine and cystamine.
• Accelerated skin regeneration and reduced inflammation were noted during treatment of radiogenic dermatitides.
• No structural alterations in regenerated skin were observed; improved mitochondrial membrane conservation was evident.
• 14C-diethone showed significant skin penetration within two hours, with minimal systemic absorption.

Conclusions:

• Diethone is a highly effective agent for preventing and treating radiogenic skin injuries.
• Its superior efficacy and safety profile make it a promising pharmaceutical for radiation therapy patients.
• Diethone warrants further clinical investigation for managing radiation-induced dermatological complications.