PMID- 34944468 OWN - NLM STAT- MEDLINE DCOM- 20220119 LR - 20220119 IS - 2218-273X (Electronic) IS - 2218-273X (Linking) VI - 11 IP - 12 DP - 2021 Dec 3 TI - Hyperbaric Oxygen Treatment: Effects on Mitochondrial Function and Oxidative Stress. LID - 10.3390/biom11121827 [doi] LID - 1827 AB - Hyperbaric oxygen treatment (HBOT)-the administration of 100% oxygen at atmospheric pressure (ATA) greater than 1 ATA-increases the proportion of dissolved oxygen in the blood five- to twenty-fold. This increase in accessible oxygen places the mitochondrion-the organelle that consumes most of the oxygen that we breathe-at the epicenter of HBOT's effects. As the mitochondrion is also a major site for the production of reactive oxygen species (ROS), it is possible that HBOT will increase also oxidative stress. Depending on the conditions of the HBO treatment (duration, pressure, umber of treatments), short-term treatments have been shown to have deleterious effects on both mitochondrial activity and production of ROS. Long-term treatment, on the other hand, improves mitochondrial activity and leads to a decrease in ROS levels, partially due to the effects of HBOT, which increases antioxidant defense mechanisms. Many diseases and conditions are characterized by mitochondrial dysfunction and imbalance between ROS and antioxidant scavengers, suggesting potential therapeutic intervention for HBOT. In the present review, we will present current views on the effects of HBOT on mitochondrial function and oxidative stress, the interplay between them and the implications for several diseases. FAU - Schottlender, Nofar AU - Schottlender N AUID- ORCID: 0000-0002-3835-2381 AD - School of Neurobiology, Biochemistry and Biophysics, Life Sciences Faculty, Tel Aviv University, Tel Aviv 69978, Israel. AD - Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel. FAU - Gottfried, Irit AU - Gottfried I AUID- ORCID: 0000-0002-5927-4626 AD - School of Neurobiology, Biochemistry and Biophysics, Life Sciences Faculty, Tel Aviv University, Tel Aviv 69978, Israel. FAU - Ashery, Uri AU - Ashery U AD - School of Neurobiology, Biochemistry and Biophysics, Life Sciences Faculty, Tel Aviv University, Tel Aviv 69978, Israel. AD - Sagol School of Neuroscience, Tel Aviv University, Tel Aviv 69978, Israel. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review DEP - 20211203 PL - Switzerland TA - Biomolecules JT - Biomolecules JID - 101596414 RN - 0 (Reactive Oxygen Species) SB - IM MH - Humans MH - Hyperbaric Oxygenation/adverse effects/*methods MH - Mitochondria/*metabolism MH - Oxidative Stress MH - Reactive Oxygen Species/*metabolism MH - Time Factors PMC - PMC8699286 OTO - NOTNLM OT - HIF1a OT - Nrf2 OT - SIRT1 OT - hyperbaric oxygen treatment (HBOT) OT - hyperoxic-hypoxic paradox OT - mitochondrial function OT - neuroinflammation OT - oxidative stress OT - reactive oxygen species (ROS) OT - superoxide dismutase (SOD) COIS- The authors declare no conflict of interest. EDAT- 2021/12/25 06:00 MHDA- 2022/01/20 06:00 PMCR- 2021/12/03 CRDT- 2021/12/24 01:05 PHST- 2021/11/04 00:00 [received] PHST- 2021/11/29 00:00 [revised] PHST- 2021/11/30 00:00 [accepted] PHST- 2021/12/24 01:05 [entrez] PHST- 2021/12/25 06:00 [pubmed] PHST- 2022/01/20 06:00 [medline] PHST- 2021/12/03 00:00 [pmc-release] AID - biom11121827 [pii] AID - biomolecules-11-01827 [pii] AID - 10.3390/biom11121827 [doi] PST - epublish SO - Biomolecules. 2021 Dec 3;11(12):1827. doi: 10.3390/biom11121827.