High altitude and free radicals

Tibor Bakonyi, Zsolt Radak

Research output: Contribution to journalReview article

57 Citations (Scopus)

Abstract

High altitude exposure results in decreased oxygen pressure and an increased formation of reactive oxygen and nitrogen species (RONS), which is often associated with increases in oxidative damage to lipids, proteins and DNA. Exposure to high altitude appears to decrease the activity and effectiveness of antioxidant enzymes system. Moreover, during high altitude exposure several RONS generating source are activated, including mitochondrial electron transport chain, xanthine oxidase, and nitric oxide synthase (NO). Physical exercise at high altitude can further enhance the oxidative stress. The available information suggests that RONS are involved and are even a causative factor of acute mountain sickness. Supplementation of antioxidant seems to be a necessary step to prevent or decrease to high altitude exposure associated oxidative stress.

Original languageEnglish
Pages (from-to)64-69
Number of pages6
JournalJournal of Sports Science and Medicine
Volume3
Issue number2
Publication statusPublished - 2004 Dec 1
Externally publishedYes

Fingerprint

Free Radicals
Reactive Nitrogen Species
Reactive Oxygen Species
Oxidative Stress
Antioxidants
Altitude Sickness
Xanthine Oxidase
Electron Transport
Nitric Oxide Synthase
Exercise
Oxygen
Lipids
Pressure
DNA
Enzymes
Proteins

Keywords

  • Acute mountain sickness
  • Antioxidants
  • High altitude
  • Oxidative damage
  • Oxidative stress
  • Reactive oxygen and nitrogen species

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

High altitude and free radicals. / Bakonyi, Tibor; Radak, Zsolt.

In: Journal of Sports Science and Medicine, Vol. 3, No. 2, 01.12.2004, p. 64-69.

Research output: Contribution to journalReview article

Bakonyi, Tibor ; Radak, Zsolt. / High altitude and free radicals. In: Journal of Sports Science and Medicine. 2004 ; Vol. 3, No. 2. pp. 64-69.
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