Hyperbaric oxygen therapy as a prevention modality for radiation damage in the mandibles of mice

Linda Spiegelberg, Anneke Braks, LC Groeneveldt, Urville Djasim, Karel Wal, Eppo Wolvius

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Background: Radiation therapy (RT) as part head and neck cancer treatment often leads to irradiation of surrounding normal tissue, such as mandibular bone. A reduced reparative capacity of the bone can lead to osteoradionecrosis (URN). Hyperbaric oxygen therapy (HBOT) is used to treat URN, based on its potential to raise the oxygen tension in tissues. However, prevention of radiation-induced damage is of great interest. Our purpose was to investigate whether HBOT could prevent radiation-induced damage to murine mandibles. Methods: Twenty-eight mice were irradiated in the head and neck region with a single dose (15 Gy) and half of them were subsequently subjected to HBOT. Another 14 mice did not receive any treatment and served as controls. Ten and 24 weeks after RT, mandibles were harvested and analysed histologically and by microcomputed tomography (micro-CT). Results: Micro-CT analysis showed a reduction in relative bone volume by RT, which was partly recovered by HBOT. Trabecular thickness and separation were also positively influenced by HBOT. Morphologically, HBOT suppressed the osteoclast number, indicating decreased resorption, and decreased the amount of lacunae devoid of osteocytes, indicating increased bone viability. Conclusions: HBOT was able to partly reduce radiation-induced effects on microarchitectural parameters, resorption, and bone viability in mouse mandibles. HBOT could therefore potentially play a role in the prevention of radiation-induced damage to human mandibular bone. (C) 2014 European Association for Cranio-Maxillo-Facial Surgery. Published by Elsevier Ltd. All rights reserved.
Original languageUndefined/Unknown
Pages (from-to)214-219
Number of pages6
JournalJournal of Cranio-Maxillofacial Surgery
Issue number2
Publication statusPublished - 2015

Research programs

  • EMC OR-01-59-01

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