Cited by 2,626Mitochondrial Function and PathologyRedox biology and oxidative stressCoenzyme Q10 studies and effects

The mitochondrial generation of hydrogen peroxide. General properties and effect of hyperbaric oxygen

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Boveris, Alberto, Chance, Britton·1973·Biochemical Journal

Abstract

1. Pigeon heart mitochondria produce H2O2 at a maximal rate of about 20nmol/min per mg of protein. 2. Succinate–glutamate and malate–glutamate are substrates which are able to support maximal H2O2 production rates. With malate–glutamate, H2O2 formation is sensitive to rotenone. Endogenous substrate, octanoate, stearoyl-CoA and palmitoyl-carnitine are by far less efficient substrates. 3. Antimycin A exerts a very pronounced effect in enhancing H2O2 production in pigeon heart mitochondria; 0.26nmol of antimycin A/mg of protein and the addition of an uncoupler are required for maximal H2O2 formation. 4. In the presence of endogenous substrate and of antimycin A, ATP decreases and uncoupler restores the rates of H2O2 formation. 5. Reincorporation of ubiquinone-10 and ubiquinone-3 to ubiquinone-depleted pigeon heart mitochondria gives a system in which H2O2 production is linearly related to the incorporated ubiquinone. 6. The generation of H2O2 by pigeon heart mitochondria in the presence of succinate–glutamate and in metabolic state 4 has an optimum pH value of 7.5. In states 1 and 3u, and in the presence of antimycin A and uncoupler, the optimum pH value is shifted towards more alkaline values. 7. With increase of the partial pressure of O2 to the hyperbaric region the formation of H2O2 is markedly increased in pigeon heart mitochondria and in rat liver mitochondria. With rat liver mitochondria and succinate as substrate in state 4, an increase in the pO2 up to 1.97MPa (19.5atm) increases H2O2 formation 10–15-fold. Similar pO2 profiles were observed when rat liver mitochondria were supplemented either with antimycin A or with antimycin A and uncoupler. No saturation of the system with O2 was observed up to 1.97MPa (19.5atm). By increasing the pO2 to 1.97MPa (19.5atm), H2O2 formation in pigeon heart mitochondria with succinate as substrate increased fourfold in metabolic state 4, with antimycin A added the increase was threefold and with antimycin A and uncoupler it was 2.5-fold. In the last two saturation of the system with oxygen was observed, with an apparent Km of about 71kPa (0.7–0.8atm) and a Vmax. of 12 and 20nmol of H2O2/min per mg of protein. 8. It is postulated that in addition to the well-known flavin reaction, formation of H2O2 may be due to interaction with an energy-dependent component of the respiratory chain at the cytochrome b level.

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  • A small proportion (~2-11%) of electrons entering the ETC escape from the chain at complex I or III to generate superoxide.

    “Although the majority of electrons entering the ETC ultimately reduce oxygen to water at complex IV, a small proportion (~2–11%) of electrons escape from the chain at complex I or III to generate superoxide (34, 115, 678).”
  • Some lipid peroxidation products, such as HNE, may induce partial uncoupling of mitochondria through UCPs and are thought to initiate protective mechanisms.

    “Some lipid peroxidation products, such as 4-hydroxy-trans-2-noneal (HNE) may induce partial uncoupling of mitochondria through UCPs and are thought to initiate protective mechanisms (41, 116).”
  • The hypothesis that mitochondrial uncoupling decreases ROS production was confirmed in many models, including isolated rat and pigeon liver mitochondria, human monoblastic ML-1 cells, and rat brains, hearts, kidneys, livers, and skeletal muscles.

    “This hypothesis was confirmed in many models, including, for example, isolated rat and pigeon liver mitochondria (decrease in H2O2) [143], human monoblastic ML-1 cells (decrease in O2•(−) and ONOO−), and rat brains, hearts, kidneys, livers, and skeletal muscles [137].”

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Research works printed but not linked: 4

  1. Chance, B. & Hagihara, B. (1963) Proc. Int. Cong. Bio- chem. 5th 5, 3-37
  2. Chance, B., Boveris, A., Oshino, N. & Loschen, G. (1971) in 2nd International Symposium on Oxidases and Related Redox Systems (King, T. S. & Morrison, M., eds.), University Park Press, Baltimore, in the press
  3. Garland, P. B., Chance, B., Ernster, L., Lee, C. P. & Wong, D. (1967) Proc. Nat. Acad. Sci. U.S. 58, 1696- 1702
  4. Ohnishi, T. (1973) Biochim. Biophys. Acta in the press

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Authors
Boveris, A., & Chance, B.
Affiliations
University of Pennsylvania (US)
Venue
Biochemical Journal
Published
1973-07-15
Volume
134
Issue
3
Pages
707-716
ISSN
0306-3283 (ISSN-L)
OpenAlex
W1925799544
Cited by
2,626
References
25
Citations by year
2026: 13 · 2025: 34 · 2024: 57 · 2023: 39 · 2022: 64 · 2021: 74 · 2020: 60 · 2019: 77 · 2018: 78 · 2017: 71 · 2016: 76 · 2015: 85 · 2014: 103 · 2013: 88 · 2012: 99
FWCI
3.50
Type
journal article
Language
en
Open access
Locations
  • Biochemical Journal (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Redox biology and oxidative stress
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Coenzyme Q10 studies and effects
Keywords
hyperbaric oxygen therapy, rat liver mitochondria, antimycin A, rotenone, uncoupling, coenzyme Q10, ATP, pH optimum, oxygen partial pressure, electron transport chain, oxidative metabolism, oxygen toxicity, oxidative stress
MeSH terms
Animals, Antimycin A, Glutamates, Heart, Hydrogen Peroxide, Hydrogen-Ion Concentration, Hyperbaric Oxygenation, Malates, Mitochondria, Liver, Mitochondria, Muscle, Columbidae, Pressure, Rotenone, Succinates, Ubiquinone, In Vitro Techniques

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