Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.

<h4>Aims</h4>Metabolic syndrome induces cardiac dysfunction associated with mitochondria abnormalities. As low levels of carbon monoxide (CO) may improve myocardial and mitochondrial activities, we tested whether a CO-releasing molecule (CORM-3) reverses metabolic syndrome-induced cardia...

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Autores principales: Steve Lancel, David Montaigne, Xavier Marechal, Camille Marciniak, Sidi Mohamed Hassoun, Brigitte Decoster, Caroline Ballot, Caroline Blazejewski, Delphine Corseaux, Bernadette Lescure, Roberto Motterlini, Remi Neviere
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Publicado: Public Library of Science (PLoS) 2012
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spelling oai:doaj.org-article:ca19a66aa21b4018a36778a16e2763d12021-11-18T07:10:07ZCarbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.1932-620310.1371/journal.pone.0041836https://doaj.org/article/ca19a66aa21b4018a36778a16e2763d12012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22870253/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Aims</h4>Metabolic syndrome induces cardiac dysfunction associated with mitochondria abnormalities. As low levels of carbon monoxide (CO) may improve myocardial and mitochondrial activities, we tested whether a CO-releasing molecule (CORM-3) reverses metabolic syndrome-induced cardiac alteration through changes in mitochondrial biogenesis, dynamics and autophagy.<h4>Methods and results</h4>Mice were fed with normal diet (ND) or high-fat diet (HFD) for twelve weeks. Then, mice received two intraperitoneal injections of CORM-3 (10 mg x kg(-1)), with the second one given 16 hours after the first. Contractile function in isolated hearts and mitochondrial parameters were evaluated 24 hours after the last injection. Mitochondrial population was explored by electron microscopy. Changes in mitochondrial dynamics, biogenesis and autophagy were assessed by western-blot and RT-qPCR. Left ventricular developed pressure was reduced in HFD hearts. Mitochondria from HFD hearts presented reduced membrane potential and diminished ADP-coupled respiration. CORM-3 restored both cardiac and mitochondrial functions. Size and number of mitochondria increased in the HFD hearts but not in the CORM-3-treated HFD group. CORM-3 modulated HFD-activated mitochondrial fusion and biogenesis signalling. While autophagy was not activated in the HFD group, CORM-3 increased the autophagy marker LC3-II. Finally, ex vivo experiments demonstrated that autophagy inhibition by 3-methyladenine abolished the cardioprotective effects of CORM-3.<h4>Conclusion</h4>CORM-3 may modulate pathways controlling mitochondrial quality, thus leading to improvements of mitochondrial efficiency and HFD-induced cardiac dysfunction.Steve LancelDavid MontaigneXavier MarechalCamille MarciniakSidi Mohamed HassounBrigitte DecosterCaroline BallotCaroline BlazejewskiDelphine CorseauxBernadette LescureRoberto MotterliniRemi NevierePublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 8, p e41836 (2012)
institution DOAJ
collection DOAJ
language EN
topic Medicine
R
Science
Q
spellingShingle Medicine
R
Science
Q
Steve Lancel
David Montaigne
Xavier Marechal
Camille Marciniak
Sidi Mohamed Hassoun
Brigitte Decoster
Caroline Ballot
Caroline Blazejewski
Delphine Corseaux
Bernadette Lescure
Roberto Motterlini
Remi Neviere
Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
description <h4>Aims</h4>Metabolic syndrome induces cardiac dysfunction associated with mitochondria abnormalities. As low levels of carbon monoxide (CO) may improve myocardial and mitochondrial activities, we tested whether a CO-releasing molecule (CORM-3) reverses metabolic syndrome-induced cardiac alteration through changes in mitochondrial biogenesis, dynamics and autophagy.<h4>Methods and results</h4>Mice were fed with normal diet (ND) or high-fat diet (HFD) for twelve weeks. Then, mice received two intraperitoneal injections of CORM-3 (10 mg x kg(-1)), with the second one given 16 hours after the first. Contractile function in isolated hearts and mitochondrial parameters were evaluated 24 hours after the last injection. Mitochondrial population was explored by electron microscopy. Changes in mitochondrial dynamics, biogenesis and autophagy were assessed by western-blot and RT-qPCR. Left ventricular developed pressure was reduced in HFD hearts. Mitochondria from HFD hearts presented reduced membrane potential and diminished ADP-coupled respiration. CORM-3 restored both cardiac and mitochondrial functions. Size and number of mitochondria increased in the HFD hearts but not in the CORM-3-treated HFD group. CORM-3 modulated HFD-activated mitochondrial fusion and biogenesis signalling. While autophagy was not activated in the HFD group, CORM-3 increased the autophagy marker LC3-II. Finally, ex vivo experiments demonstrated that autophagy inhibition by 3-methyladenine abolished the cardioprotective effects of CORM-3.<h4>Conclusion</h4>CORM-3 may modulate pathways controlling mitochondrial quality, thus leading to improvements of mitochondrial efficiency and HFD-induced cardiac dysfunction.
format article
author Steve Lancel
David Montaigne
Xavier Marechal
Camille Marciniak
Sidi Mohamed Hassoun
Brigitte Decoster
Caroline Ballot
Caroline Blazejewski
Delphine Corseaux
Bernadette Lescure
Roberto Motterlini
Remi Neviere
author_facet Steve Lancel
David Montaigne
Xavier Marechal
Camille Marciniak
Sidi Mohamed Hassoun
Brigitte Decoster
Caroline Ballot
Caroline Blazejewski
Delphine Corseaux
Bernadette Lescure
Roberto Motterlini
Remi Neviere
author_sort Steve Lancel
title Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
title_short Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
title_full Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
title_fullStr Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
title_full_unstemmed Carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
title_sort carbon monoxide improves cardiac function and mitochondrial population quality in a mouse model of metabolic syndrome.
publisher Public Library of Science (PLoS)
publishDate 2012
url https://doaj.org/article/ca19a66aa21b4018a36778a16e2763d1
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