Volume 16, Issue 4 pp. 513-519

Hyperbaric oxygen attenuates cell growth in skin fibroblasts cultured in a high-glucose medium

Hen-I Lin

Hen-I Lin

Department of Medicine, Catholic Cardinal Tien Hospital, Taipei, Taiwan,

Department of Medicine, School of Medicine, Fu Jen Catholic University, Taipei, Taiwan,

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Shi-Jye Chu

Shi-Jye Chu

Department of Emergency Medicine,

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Wann-Cherng Perng

Wann-Cherng Perng

Division of Chest Medicine, Tri-Service General Hospital, Taipei, Taiwan, and

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Chin-Pyng Wu

Chin-Pyng Wu

Division of Chest Medicine, Tri-Service General Hospital, Taipei, Taiwan, and

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Zuei-Yin Lin

Zuei-Yin Lin

Undersea and Hyperbaric Medicine, National Defense Medical Center, Taipei, Taiwan

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Kun-Lun Huang MD, PhD

Kun-Lun Huang MD, PhD

Division of Chest Medicine, Tri-Service General Hospital, Taipei, Taiwan, and

Undersea and Hyperbaric Medicine, National Defense Medical Center, Taipei, Taiwan

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First published: 09 July 2008
Citations: 14
Reprint requests:
Kun-Lun Huang, MD, PhD, Institute of Undersea and Hyperbaric Medicine, National Defense Medical Center, PO Box 90048-516, Taipei 114, Taiwan. Tel: 011 886 2 8792 4873;
Fax: 011 886 2 8792 4873;
Email: [email protected]

This work was performed in the National Defense Medical Center.

ABSTRACT

Hyperglycemia and hypoxia synergistically retard diabetic wound healing. We investigated the direct effect of hyperbaric and normobaric hyperoxia on skin fibroblasts cultured in a high-glucose medium. Detroit 551 human dermal fibroblasts cultured in Dulbecco's modified Eagle's medium containing d-glucose had reduced cell survival compared with cells grown in normal glucose medium; survival was 27.5±3.8% lower in 25 mM glucose and 30.6±3.7% lower in 50 mM glucose. Cell survival decreased because of inhibition of cell proliferation and enhanced cell death. Daily hyperbaric oxygen therapy at 2.5 atmosphere absolute for 90 minutes on 3 consecutive days reduced cell proliferation and increased cell death in normal cultured fibroblasts. Hyperbaric oxygen therapy and high-glucose medium had a synergistic effect and reduced survival by 37.6±4.4% (25 mM glucose) and 39.6±5.1% (50 mM glucose). The effects of hyperbaric oxygen and high-glucose medium were associated with overproduction of reactive oxygen species. Our results suggest that direct exposure of skin fibroblasts to hyperbaric oxygen affects cell growth and superimposes the toxic effect of high glucose. This cytotoxicity may be related to the production of reactive oxygen species in the fibroblasts.

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