Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies
Introduction: Mammalian hibernation is a natural molecular adaptation to extreme environmental conditions with important applications for perioperative organ protection. We conducted an integrated proteomic analysis to identify species and season-specific correlates of the cardioprotective phenotype...
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Ovid Technologies (Wolters Kluwer Health)
2014
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Online Access: | http://dx.doi.org/10.1161/circ.130.suppl_2.18884 http://journals.lww.com/00003017-201411251-03613 |
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crovidcr:10.1161/circ.130.suppl_2.18884 2023-05-15T14:59:26+02:00 Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies Quinones, Quintin J Ma, Qing Zhang, Zhiquan Henao, Ricardo Soderblom, Erik Moseley, Martin A Newgard, Christopher Drew, Kelly Barnes, Brian M Podgoreanu, Mihai V 2014 http://dx.doi.org/10.1161/circ.130.suppl_2.18884 http://journals.lww.com/00003017-201411251-03613 en eng Ovid Technologies (Wolters Kluwer Health) Circulation volume 130, issue suppl_2 ISSN 0009-7322 1524-4539 Physiology (medical) Cardiology and Cardiovascular Medicine journal-article 2014 crovidcr https://doi.org/10.1161/circ.130.suppl_2.18884 2022-05-29T06:49:31Z Introduction: Mammalian hibernation is a natural molecular adaptation to extreme environmental conditions with important applications for perioperative organ protection. We conducted an integrated proteomic analysis to identify species and season-specific correlates of the cardioprotective phenotype. Methods: Quantitative 2D-LC/LC-MS/MS was used in the myocardium of summer active arctic ground squirrels (AGS), winter hibernating AGS, and rats subjected to deep hypothermic cardiac arrest and reperfusion. Results: Hibernating AGS display robust cardioprotection in our model of I/R compared with rats using both biomarker (Fig 1) and echocardiographic assessment of cardiac injury. Proteomic analysis revealed significant reduction in subunits of all five electron transport chain (ETC) complexes in hibernating AGS compared with rats, only complex 5 showed increased expression of some subunits after I/R.Fig 2 Conclusions: Proteomic profiling revealed dichotomy in the cardioprotective adaptations employed by hibernating AGS and rat. The proteomic profile of hibernating AGS resembles that of myocardial hibernation in other mammals, with significant downregulation of mitochondrial ETC complexes. However, unlike myocardial hibernation in non-hibernators, AGS demonstrated downregulation of glycolytic and other myocardial energetic pathways with the exception of fatty acid oxidation. Sirtuin 3 - a key regulator of mitochondrial bioenergetics - was robustly upregulated in AGS, suggesting that preventing hyperacetylation of key metabolic enzymes may be a cardioprotective strategy employed by hibernators. Article in Journal/Newspaper Arctic Ovid (via Crossref) Arctic Circulation 130 suppl_2 |
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English |
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Physiology (medical) Cardiology and Cardiovascular Medicine |
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Physiology (medical) Cardiology and Cardiovascular Medicine Quinones, Quintin J Ma, Qing Zhang, Zhiquan Henao, Ricardo Soderblom, Erik Moseley, Martin A Newgard, Christopher Drew, Kelly Barnes, Brian M Podgoreanu, Mihai V Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies |
topic_facet |
Physiology (medical) Cardiology and Cardiovascular Medicine |
description |
Introduction: Mammalian hibernation is a natural molecular adaptation to extreme environmental conditions with important applications for perioperative organ protection. We conducted an integrated proteomic analysis to identify species and season-specific correlates of the cardioprotective phenotype. Methods: Quantitative 2D-LC/LC-MS/MS was used in the myocardium of summer active arctic ground squirrels (AGS), winter hibernating AGS, and rats subjected to deep hypothermic cardiac arrest and reperfusion. Results: Hibernating AGS display robust cardioprotection in our model of I/R compared with rats using both biomarker (Fig 1) and echocardiographic assessment of cardiac injury. Proteomic analysis revealed significant reduction in subunits of all five electron transport chain (ETC) complexes in hibernating AGS compared with rats, only complex 5 showed increased expression of some subunits after I/R.Fig 2 Conclusions: Proteomic profiling revealed dichotomy in the cardioprotective adaptations employed by hibernating AGS and rat. The proteomic profile of hibernating AGS resembles that of myocardial hibernation in other mammals, with significant downregulation of mitochondrial ETC complexes. However, unlike myocardial hibernation in non-hibernators, AGS demonstrated downregulation of glycolytic and other myocardial energetic pathways with the exception of fatty acid oxidation. Sirtuin 3 - a key regulator of mitochondrial bioenergetics - was robustly upregulated in AGS, suggesting that preventing hyperacetylation of key metabolic enzymes may be a cardioprotective strategy employed by hibernators. |
format |
Article in Journal/Newspaper |
author |
Quinones, Quintin J Ma, Qing Zhang, Zhiquan Henao, Ricardo Soderblom, Erik Moseley, Martin A Newgard, Christopher Drew, Kelly Barnes, Brian M Podgoreanu, Mihai V |
author_facet |
Quinones, Quintin J Ma, Qing Zhang, Zhiquan Henao, Ricardo Soderblom, Erik Moseley, Martin A Newgard, Christopher Drew, Kelly Barnes, Brian M Podgoreanu, Mihai V |
author_sort |
Quinones, Quintin J |
title |
Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies |
title_short |
Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies |
title_full |
Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies |
title_fullStr |
Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies |
title_full_unstemmed |
Abstract 18884: Proteomic Profiling Reveals Reduction in Electron Transport Chain Proteins in the Hearts of Hibernating Arctic Ground Squirrels Compared with Rats after Surgical Ischemia and Reperfusion: A Convergence of Mammalian Cardio-protective Strategies |
title_sort |
abstract 18884: proteomic profiling reveals reduction in electron transport chain proteins in the hearts of hibernating arctic ground squirrels compared with rats after surgical ischemia and reperfusion: a convergence of mammalian cardio-protective strategies |
publisher |
Ovid Technologies (Wolters Kluwer Health) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1161/circ.130.suppl_2.18884 http://journals.lww.com/00003017-201411251-03613 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Circulation volume 130, issue suppl_2 ISSN 0009-7322 1524-4539 |
op_doi |
https://doi.org/10.1161/circ.130.suppl_2.18884 |
container_title |
Circulation |
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130 |
container_issue |
suppl_2 |
_version_ |
1766331545220546560 |