Cited by 119Transplantation: Methods and OutcomesCardiac Ischemia and ReperfusionOrgan Transplantation Techniques and Outcomes

The mitochondria-targeted anti-oxidant MitoQ decreases ischemia-reperfusion injury in a murine syngeneic heart transplant model

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Dare, Anna J., Logan, Angela, Prime, Tracy A., Rogatti, Sebastian, Goddard, Martin, Bolton, Eleanor M., Bradley, J. Andrew, Pettigrew, Gavin J. +2 more·2015·The Journal of Heart and Lung Transplantation

Abstract

BACKGROUND: Free radical production and mitochondrial dysfunction during cardiac graft reperfusion is a major factor in post-transplant ischemia-reperfusion (IR) injury, an important underlying cause of primary graft dysfunction. We therefore assessed the efficacy of the mitochondria-targeted anti-oxidant MitoQ in reducing IR injury in a murine heterotopic cardiac transplant model. METHODS: Hearts from C57BL/6 donor mice were flushed with storage solution alone, solution containing the anti-oxidant MitoQ, or solution containing the non-anti-oxidant decyltriphenylphosphonium control and exposed to short (30 minutes) or prolonged (4 hour) cold preservation before transplantation. Grafts were transplanted into C57BL/6 recipients and analyzed for mitochondrial reactive oxygen species production, oxidative damage, serum troponin, beating score, and inflammatory markers 120 minutes or 24 hours post-transplant. RESULTS: MitoQ was taken up by the heart during cold storage. Prolonged cold preservation of donor hearts before IR increased IR injury (troponin I, beating score) and mitochondrial reactive oxygen species, mitochondrial DNA damage, protein carbonyls, and pro-inflammatory cytokine release 24 hours after transplant. Administration of MitoQ to the donor heart in the storage solution protected against this IR injury by blocking graft oxidative damage and dampening the early pro-inflammatory response in the recipient. CONCLUSIONS: IR after heart transplantation results in mitochondrial oxidative damage that is potentiated by cold ischemia. Supplementing donor graft perfusion with the anti-oxidant MitoQ before transplantation should be studied further to reduce IR-related free radical production, the innate immune response to IR injury, and subsequent donor cardiac injury.

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Crossref · 10.1016/j.healun.2015.05.007

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  • MitoQ has been shown to be protective against ischemia/reperfusion injury, cardiac hypertrophy, and hypertension in animal models.

    “MitoQ has been used extensively in animal models of disease and been shown to be protective against ischemia/reperfusion injury, cardiac hypertrophy, and hypertension (210, 211) among other pathologies.”

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Authors
Dare, A. J., Logan, A., Prime, T. A., Rogatti, S., Goddard, M., Bolton, E. M., Bradley, J. A., Pettigrew, G. J., Murphy, M. P., & Saeb-Parsy, K.
Affiliations
  • University of Cambridge (GB)
  • National Health Service (GB)
Corresponding author
Murphy, Michael P.
Venue
The Journal of Heart and Lung Transplantation
Publisher
Elsevier BV
Published
2015-11
Volume
34
Issue
11
Pages
1471-1480
ISSN
1053-2498 (ISSN-L)
OpenAlex
W1788023720
Cited by
119
References
48
Citations by year
2026: 10 · 2025: 19 · 2024: 13 · 2023: 8 · 2022: 7 · 2021: 14 · 2020: 13 · 2019: 7 · 2018: 11 · 2017: 8 · 2016: 9
FWCI
9.41
Type
journal article
Language
en
Open access
Locations
  • The Journal of Heart and Lung Transplantation (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Surgery › Transplantation: Methods and Outcomes
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Cardiac Ischemia and Reperfusion
  • Health Sciences › Medicine › Surgery › Organ Transplantation Techniques and Outcomes
Keywords
MitoQ, mitochondria-targeted antioxidants, ischemia-reperfusion injury, heart transplantation, primary graft dysfunction, oxidative stress, mitochondrial reactive oxygen species, cold ischemia, donor heart preservation, mitochondrial DNA damage, inflammatory cytokines
MeSH terms
Animals, Antioxidants, Disease Models, Animal, Female, Male, Mice, Inbred C57BL, Mitochondria, Heart, Organ Preservation, Organophosphorus Compounds, Ubiquinone, Reperfusion Injury, Heart Transplantation, Free Radical Scavengers, Rats, Wistar, Reactive Oxygen Species, Oxidative Stress, Micronutrients, Mice, Rats, Primary Graft Dysfunction

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