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Mitochondrial function of monocytes during prolonged hypobaric hypoxia and influence of antioxidants – a randomized controlled study

Mitochondrial function of monocytes during prolonged hypobaric hypoxia and influence of antioxidants – a randomized controlled study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
DRKS
Registry ID
DRKS00003242
Enrollment
12
Registered
2011-09-05
Start date
2009-05-01
Completion date
Unknown
Last updated
2025-04-07

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

healthy voluteers subjected to hypobaric hypoxic conditions

Interventions

Group 1: placebo Group 2: 800 I.E. vitamin E, 1000 mg vitamin C, 200,000 I.E. vitamin A, 600 mg N-acetylcysteine in the form of a one single tablet po per day commencing 2 months prior until completio

Sponsors

Inselspital Bern
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 65 Years

Inclusion criteria

Inclusion criteria: adult, healthy, well-trained mountaineers with previous trekking experience and basic mountaineering skills

Exclusion criteria

Exclusion criteria: any type of cardiac, renal, hepatic or respiratory diseases or acute or chronic infectious or inflammatory disease, presence of any metabolic disorder, regular intake of medications, and the development of high-altitude pulmonary edema or high-altitude cerebral edema after rapid ascent to altitudes below 3500 m

Design outcomes

Primary

MeasureTime frame
changes in mitochondrial function of peripheral blood monocytes measured as activity of citrate synthase using a citrate synthase assay kit (Sigma-Aldrich, CS0720) and activity of cytochrome c oxidase using a cytochrome c oxidase assay kit (Sigma-Aldrich, CYTOCOX1) on the altitudes of 440m (baseline), 3700m (day 1), 4500m (day 4) and 5400m (day 9 ) of the expedition.

Countries

Switzerland

Contacts

Public ContactTobias Merz

Inselspital Bern

tobias.merz@insel.ch

Outcome results

None listed

Source: DRKS (via WHO ICTRP) · Data processed: Feb 4, 2026