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Guillot M, Charles AL, Lejay A, Pottecher J, Meyer A, Georg I, Goupilleau F, Diemunsch P, Geny B. Deleterious Effects of Remote Ischaemic Per-conditioning During Lower Limb Ischaemia-Reperfusion in Mice. Eur J Vasc Endovasc Surg 2021; 62:953-959. [PMID: 34364768 DOI: 10.1016/j.ejvs.2021.06.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 06/15/2021] [Accepted: 06/23/2021] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The aim of this study was to investigate whether remote ischaemic per-conditioning might protect skeletal muscle during lower limb ischaemia-reperfusion (IR). METHODS Twenty-three male C57BL/6 mice were randomised into three groups: sham group (n = 7), IR group (unilateral tourniquet induced three hours of ischaemia followed by 24 hours of reperfusion, n = 8), and remote ischaemic per-conditioning group (RIPerC) (three cycles of 10 minute IR episodes on the non-ischaemic contralateral hindlimb, n = 8). Oxygraphy, spectrofluorometry, and electron paramagnetic resonance spectroscopy were performed in order to determine mitochondrial respiratory chain complexes activities, mitochondrial calcium retention capacity (CRC) and reactive oxygen species (ROS) production in skeletal muscle. RESULTS IR impaired mitochondrial respiration (3.66 ± 0.98 vs. 7.31 ± 0. 54 μmol/min/g in ischaemic and sham muscles, p = .009 and p = .003 respectively) and tended to impair CRC (2.53 ± 0.32 vs. 3.64 ± 0.66 μmol/mg in ischaemic and sham muscles respectively, p = .066). IR did not modify ROS production (0.082 ± 0.004 vs. 0.070 ± 0.004 μmol/min/mg in ischaemic and sham muscles respectively, p = .74). RIPerC failed to restore mitochondrial respiration (3.82 ± 0.40 vs. 3.66 ± 0.98 μmol/min/g in ischaemic muscles from the RIPerC group and the IR group respectively, p = .45) and CRC (2.76 ± 0.3 vs. 2.53 ± 0.32 μmol/mg in ischaemic muscles from the RIPerC group and the IR group respectively, p = .25). RIPerC even impaired contralateral limb mitochondrial respiration (3.85 ± 0.34 vs. 7.31 ± 0. 54 μmol/min/g in contralateral muscles and sham muscles respectively, -47.3%, p = .009). CONCLUSION RIPerC failed to protect ischaemic muscles and induced deleterious effects on the contralateral non-ischaemic muscles. These data do not support the concept of RIPerC.
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Affiliation(s)
- Max Guillot
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Reanimation, University Hospital of Strasbourg, France
| | - Anne-Laure Charles
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Physiology, University Hospital of Strasbourg, France
| | - Anne Lejay
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Vascular Surgery and Kidney Transplantation, University Hospital of Strasbourg, France.
| | - Julien Pottecher
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Anaesthesiology, Critical Care and Peri-operative Medicine, University Hospital of Strasbourg, France
| | - Alain Meyer
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Physiology, University Hospital of Strasbourg, France
| | - Isabelle Georg
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France
| | - Fabienne Goupilleau
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France
| | - Pierre Diemunsch
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Vascular Surgery and Kidney Transplantation, University Hospital of Strasbourg, France
| | - Bernard Geny
- University of Strasbourg, FMTS, Research Unit 3072, Mitochondria, Oxidative Stress and Muscular Protection, Strasbourg, France; Department of Physiology, University Hospital of Strasbourg, France
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