Effects of hyperbaric oxygen exposure on experimental head and neck tumor growth, oxygenation, and vasculature

✍ Scribed by Yuquan Shi; Caroline S. Lee; Junmin Wu; Cameron J. Koch; Stephen R. Thom; Amit Maity; Eric J. Bernhard

• Publisher: John Wiley and Sons
• Year: 2005
• Tongue: English
• Weight: 457 KB
• Volume: 27
• Category: Article
• ISSN: 1043-3074
• DOI: 10.1002/hed.20169

✦ Synopsis

Abstract

Background.

Hyperbaric oxygen (HBO~2~) is used to promote healing in irradiated tissues, but concern persists about the possibility that it may promote residual tumor growth.

Methods.

The tumor growth of SQ20B and Detroit 562 head and neck squamous cell carcinoma xenografts were studied after single‐dose irradiation and 5×/week HBO~2~ treatment at 2.4 atm absolute for 90 minutes. The effect of HBO~2~ treatment on tumor hypoxia and vasculature was also examined by immunohistochemical analysis.

Results.

HBO~2~ treatment increased tumor oxygenation during the treatment interval but did not promote the growth of either irradiated or unirradiated tumors. No increase in tumor vascular endothelial growth factor expression or vascularization was detected.

Conclusions.

This study found no evidence for persistent changes in tumor microenvironment or tumor growth promotion caused by hyperbaric oxygen exposure. © 2005 Wiley Periodicals, Inc. Head Neck 27: XXX–XXX, 2005