Cited by 721Cardiac Ischemia and ReperfusionCell death mechanisms and regulationMitochondrial Function and Pathology

Reactive oxygen species released from mitochondria during brief hypoxia induce preconditioning in cardiomyocytes

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Vanden Hoek, Terry L., Becker, Lance B., Shao, Zuohui, Li, Changqing, Schumacker, Paul T.·1998·Journal of Biological Chemistry

Abstract

Reactive oxygen species (ROS) have been proposed to participate in the induction of cardiac preconditioning. However, their source and mechanism of induction are unclear. We tested whether brief hypoxia induces preconditioning by augmenting mitochondrial generation of ROS in chick cardiomyocytes. Cells were preconditioned with 10 min of hypoxia, followed by 1 h of simulated ischemia and 3 h of reperfusion. Preconditioning decreased cell death from 47 +/- 3% to 14 +/- 2%. Return of contraction was observed in 3/3 preconditioned versus 0/6 non-preconditioned experiments. During induction, ROS oxidation of the probe dichlorofluorescin (sensitive to H2O2) increased approximately 2.5-fold. As a substitute for hypoxia, the addition of H2O2 (15 micromol/liter) during normoxia also induced preconditioning-like protection. Conversely, the ROS signal during hypoxia was attenuated with the thiol reductant 2-mercaptopropionyl glycine, the cytosolic Cu,Zn-superoxide dismutase inhibitor diethyldithiocarbamic acid, and the anion channel inhibitor 4,4'-diisothiocyanato-stilbene-2,2'-disulfonate, all of which also abrogated protection. ROS generation during hypoxia was attenuated by myxothiazol, but not by diphenyleneiodonium or the nitric-oxide synthase inhibitor L-nitroarginine. We conclude that hypoxia increases mitochondrial superoxide generation which initiates preconditioning protection. Furthermore, mitochondrial anion channels and cytosolic dismutation to H2O2 may be important steps for oxidant induction of hypoxic preconditioning.

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  1. Xia, Y., Dawson, V. L., Dawson, T. M., Snyder, S. H., and Zweier, J. L. (1996) Proc. Natl. Acad. Sci. U. S. A. 93, 6770 -6774
  2. Gopalakrishna, R., and Anderson, W. B. (1989) Proc. Natl. Acad. Sci. U. S. A. 86, 6758 -6762
  3. Downey, J. M., and Cohen, M. V. (1996) in Ischaemia: Preconditioning and Adaptation (Marber, M. M., and Yellon, D. M., eds) pp. 21-34, UCL Molec- ular Pathology Series, BIOS Scientific Publishers Ltd., Oxford, United Kingdom
  4. Duranteau, J., Chandel, N. S., Kulisz, A., Shao, Z., and Schumacker, P. T. (1998) J. Biol. Chem. 273, in press

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Authors
Vanden Hoek, T. L., Becker, L. B., Shao, Z., Li, C., & Schumacker, P. T.
Affiliations
University of Chicago (US)
Corresponding author
Schumacker, Paul T.
Venue
Journal of Biological Chemistry
Publisher
Elsevier BV
Published
1998-07
Volume
273
Issue
29
Pages
18092-18098
ISSN
0021-9258 (ISSN-L)
OpenAlex
W2145047965
Cited by
721
References
40
Citations by year
2026: 5 · 2025: 5 · 2024: 7 · 2023: 4 · 2022: 4 · 2021: 15 · 2020: 10 · 2019: 8 · 2018: 11 · 2017: 8 · 2016: 29 · 2015: 16 · 2014: 31 · 2013: 33 · 2012: 26
FWCI
20.19
Type
journal article
Language
en
Open access
Locations
  • Journal of Biological Chemistry (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (5k08hl003779-02, HL35440)
  • National Heart, Lung, and Blood Institute (HL 32646, HL-03779, R01HL035440, HL35440)
Topics
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Mitochondrial Function and Pathology
Keywords
reactive oxygen species, mitochondrial superoxide, hypoxia, cardioprotection, preconditioning, cardiomyocytes, ischemia-reperfusion injury, hydrogen peroxide, superoxide dismutase, DIDS, myxothiazol, nitric oxide synthase, cell death
MeSH terms
Animals, Cells, Cultured, Chick Embryo, Cytosol, Ditiocarb, Enzyme Inhibitors, Hydrogen Peroxide, Tiopronin, Methacrylates, Mitochondria, Heart, Myocardial Contraction, Onium Compounds, Superoxide Dismutase, Thiazoles, Cell Hypoxia, Cell Death, Reactive Oxygen Species, Nitric Oxide Synthase, Ischemic Preconditioning, Myocardial

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