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Wang H, Shen M, Shu X, Guo B, Jia T, Feng J, Lu Z, Chen Y, Lin J, Liu Y, Zhang J, Zhang X, Sun D. Cardiac Metabolism, Reprogramming, and Diseases. J Cardiovasc Transl Res 2024; 17:71-84. [PMID: 37668897 DOI: 10.1007/s12265-023-10432-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 08/22/2023] [Indexed: 09/06/2023]
Abstract
Cardiovascular diseases (CVD) account for the largest bulk of deaths worldwide, posing a massive burden on societies and the global healthcare system. Besides, the incidence and prevalence of these diseases are on the rise, demanding imminent action to revert this trend. Cardiovascular pathogenesis harbors a variety of molecular and cellular mechanisms among which dysregulated metabolism is of significant importance and may even proceed other mechanisms. The healthy heart metabolism primarily relies on fatty acids for the ultimate production of energy through oxidative phosphorylation in mitochondria. Other metabolites such as glucose, amino acids, and ketone bodies come next. Under pathological conditions, there is a shift in metabolic pathways and the preference of metabolites, termed metabolic remodeling or reprogramming. In this review, we aim to summarize cardiovascular metabolism and remodeling in different subsets of CVD to come up with a new paradigm for understanding and treatment of these diseases.
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Affiliation(s)
- Haichang Wang
- Heart Hospital, Xi'an International Medical Center, Xi'an, China
| | - Min Shen
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Xiaofei Shu
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Baolin Guo
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Tengfei Jia
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Jiaxu Feng
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Zuocheng Lu
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Yanyan Chen
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Jie Lin
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Yue Liu
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Jiye Zhang
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Xuan Zhang
- Institute for Hospital Management Research, Chinese PLA General Hospital, Beijing, China.
| | - Dongdong Sun
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, 127 West Changle Road, Xi'an, 710032, Shaanxi, China.
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Yang Z, Liu H, Lu D, Cao S, Xu F, Li C. Effects of high-dose glucose-insulin-potassium on acute coronary syndrome patients receiving reperfusion therapy: a meta-analysis. World J Emerg Med 2024; 15:181-189. [PMID: 38855366 PMCID: PMC11153375 DOI: 10.5847/wjem.j.1920-8642.2024.048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Accepted: 03/20/2024] [Indexed: 06/11/2024] Open
Abstract
BACKGROUND This meta-analysis aimed to assess the efficacy of high-dose glucose-insulin-potassium (GIK) therapy on clinical outcomes in acute coronary syndrome (ACS) patients receiving reperfusion therapy. METHODS We searched the PubMed, Web of Science, MEDLINE, Embase, and Cochrane Library databases from inception to April 26, 2022, for randomized controlled trials (RCTs) that compared high-dose GIK and placebos in ACS patients receiving reperfusion therapy. The primary endpoint was major adverse cardiovascular events (MACEs). RESULTS Eleven RCTs with 884 patients were ultimately included. Compared with placebos, high-dose GIK markedly reduced MACEs (risk ratio [RR] 0.57, 95% confidence interval [95% CI]: 0.35 to 0.94, P=0.03) and the risk of heart failure (RR 0.48, 95% CI: 0.25 to 0.95, P=0.04) and improved the left ventricular ejection fraction (LVEF) (mean difference [MD] 2.12, 95% CI: 0.40 to 3.92, P=0.02) at 6 months. However, no difference was observed in all-cause mortality at 30 d or 1 year. Additionally, high-dose GIK was significantly associated with increased incidences of phlebitis (RR 4.78, 95% CI: 1.36 to 16.76, P=0.01), hyperglycemia (RR 9.06, 95% CI: 1.74 to 47.29, P=0.009) and hypoglycemia (RR 6.50, 95% CI: 1.28 to 33.01, P=0.02) but not reinfarction, hyperkalemia or secondary reperfusion. In terms of oxidative stress-lowering function, high-dose GIK markedly reduced superoxide dismutase (SOD) activity but not glutathione peroxidase (GSH-Px) or catalase (CAT) activity. CONCLUSION Patients with ACS receiving reperfusion therapy exhibited a reduction in MACEs and good oxidative stress-lowering efficacy in response to high-dose GIK. Moreover, with a higher incidence of complications such as phlebitis, hyperglycemia, and hypoglycemia. Furthermore, there were no observed survival benefits associated with high-dose GIK. More trials with long-term follow-up are still needed.
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Affiliation(s)
- Zeyu Yang
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University, Jinan 250012, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary- Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Qilu Hospital of Shandong University, Jinan 250012, China
- National Medical Products Administration (NMPA) Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Huiruo Liu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University, Jinan 250012, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary- Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Qilu Hospital of Shandong University, Jinan 250012, China
- National Medical Products Administration (NMPA) Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Dazhou Lu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University, Jinan 250012, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary- Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Qilu Hospital of Shandong University, Jinan 250012, China
- National Medical Products Administration (NMPA) Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Shengchuan Cao
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University, Jinan 250012, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary- Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Qilu Hospital of Shandong University, Jinan 250012, China
- National Medical Products Administration (NMPA) Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Feng Xu
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University, Jinan 250012, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary- Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Qilu Hospital of Shandong University, Jinan 250012, China
- National Medical Products Administration (NMPA) Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Chuanbao Li
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Provincial Clinical Research Center for Emergency and Critical Care Medicine, Institute of Emergency and Critical Care Medicine of Shandong University, Chest Pain Center, Qilu Hospital of Shandong University, Jinan 250012, China
- Key Laboratory of Emergency and Critical Care Medicine of Shandong Province, Key Laboratory of Cardiopulmonary- Cerebral Resuscitation Research of Shandong Province, Shandong Provincial Engineering Laboratory for Emergency and Critical Care Medicine, Qilu Hospital of Shandong University, Jinan 250012, China
- Shandong Key Laboratory: Magnetic Field-free Medicine & Functional Imaging (MF), Qilu Hospital of Shandong University, Jinan 250012, China
- National Medical Products Administration (NMPA) Key Laboratory for Clinical Research and Evaluation of Innovative Drug, Qilu Hospital of Shandong University, Jinan 250012, China
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de Paula LJC, Uchida AH, Rezende PC, Soares P, Scudeler TL. Protective or Inhibitory Effect of Pharmacological Therapy on Cardiac Ischemic Preconditioning: A Literature Review. Curr Vasc Pharmacol 2022; 20:409-428. [PMID: 35986546 DOI: 10.2174/1570161120666220819163025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/23/2022] [Accepted: 05/31/2022] [Indexed: 01/25/2023]
Abstract
Ischemic preconditioning (IP) is an innate phenomenon, triggered by brief, non-lethal cycles of ischemia/reperfusion applied to a tissue or organ that confers tolerance to a subsequent more prolonged ischemic event. Once started, it can reduce the severity of myocardial ischemia associated with some clinical situations, such as percutaneous coronary intervention (PCI) and intermittent aortic clamping during coronary artery bypass graft surgery (CABG). Although the mechanisms underlying IP have not been completely elucidated, several studies have shown that this phenomenon involves the participation of cell triggers, intracellular signaling pathways, and end-effectors. Understanding this mechanism enables the development of preconditioning mimetic agents. It is known that a range of medications that activate the signaling cascades at different cellular levels can interfere with both the stimulation and the blockade of IP. Investigations of signaling pathways underlying ischemic conditioning have identified a number of therapeutic targets for pharmacological manipulation. This review aims to present and discuss the effects of several medications on myocardial IP.
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Affiliation(s)
| | | | - Paulo Cury Rezende
- Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Paulo Soares
- Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Thiago Luis Scudeler
- Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
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Myocardial preservation during primary percutaneous intervention: It's time to rethink? Indian Heart J 2021; 73:395-403. [PMID: 34474749 PMCID: PMC8424360 DOI: 10.1016/j.ihj.2021.07.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Whyte MB, Vas PRJ, Umpleby AM. Could Exogenous Insulin Ameliorate the Metabolic Dysfunction Induced by Glucocorticoids and COVID-19? Front Endocrinol (Lausanne) 2021; 12:649405. [PMID: 34220705 PMCID: PMC8249851 DOI: 10.3389/fendo.2021.649405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 06/02/2021] [Indexed: 01/08/2023] Open
Abstract
The finding that high-dose dexamethasone improves survival in those requiring critical care due to COVID-19 will mean much greater usage of glucocorticoids in the subsequent waves of coronavirus infection. Furthermore, the consistent finding of adverse outcomes from COVID-19 in individuals with obesity, hypertension and diabetes has focussed attention on the metabolic dysfunction that may arise with critical illness. The SARS coronavirus itself may promote relative insulin deficiency, ketogenesis and hyperglycaemia in susceptible individuals. In conjunction with prolonged critical care, these components will promote a catabolic state. Insulin infusion is the mainstay of therapy for treatment of hyperglycaemia in acute illness but what is the effect of insulin on the admixture of glucocorticoids and COVID-19? This article reviews the evidence for the effect of insulin on clinical outcomes and intermediary metabolism in critical illness.
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Affiliation(s)
- Martin Brunel Whyte
- Faculty of Health Sciences, University of Surrey, Guildford, United Kingdom
- King’s College Hospital NHS Foundation Trust, London, United Kingdom
| | | | - Anne M. Umpleby
- Faculty of Health Sciences, University of Surrey, Guildford, United Kingdom
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Hoffman M, Palioura D, Kyriazis ID, Cimini M, Badolia R, Rajan S, Gao E, Nikolaidis N, Schulze PC, Goldberg IJ, Kishore R, Yang VW, Bannister TD, Bialkowska AB, Selzman CH, Drakos SG, Drosatos K. Cardiomyocyte Krüppel-Like Factor 5 Promotes De Novo Ceramide Biosynthesis and Contributes to Eccentric Remodeling in Ischemic Cardiomyopathy. Circulation 2021; 143:1139-1156. [PMID: 33430631 PMCID: PMC7965352 DOI: 10.1161/circulationaha.120.047420] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 12/11/2020] [Indexed: 01/02/2023]
Abstract
BACKGROUND We previously showed that cardiomyocyte Krϋppel-like factor (KLF) 5 regulates cardiac fatty acid oxidation. As heart failure has been associated with altered fatty acid oxidation, we investigated the role of cardiomyocyte KLF5 in lipid metabolism and pathophysiology of ischemic heart failure. METHODS Using real-time polymerase chain reaction and Western blot, we investigated the KLF5 expression changes in a myocardial infarction (MI) mouse model and heart tissue from patients with ischemic heart failure. Using 2D echocardiography, we evaluated the effect of KLF5 inhibition after MI using pharmacological KLF5 inhibitor ML264 and mice with cardiomyocyte-specific KLF5 deletion (αMHC [α-myosin heavy chain]-KLF5-/-). We identified the involvement of KLF5 in regulating lipid metabolism and ceramide accumulation after MI using liquid chromatography-tandem mass spectrometry, and Western blot and real-time polymerase chain reaction analysis of ceramide metabolism-related genes. We lastly evaluated the effect of cardiomyocyte-specific KLF5 overexpression (αMHC-rtTA [reverse tetracycline-controlled transactivator]-KLF5) on cardiac function and ceramide metabolism, and rescued the phenotype using myriocin to inhibit ceramide biosynthesis. RESULTS KLF5 mRNA and protein levels were higher in human ischemic heart failure samples and in rodent models at 24 hours, 2 weeks, and 4 weeks post-permanent left coronary artery ligation. αMHC-KLF5-/- mice and mice treated with ML264 had higher ejection fraction and lower ventricular volume and heart weight after MI. Lipidomic analysis showed that αMHC-KLF5-/- mice with MI had lower myocardial ceramide levels compared with littermate control mice with MI, although basal ceramide content of αMHC-KLF5-/- mice was not different in control mice. KLF5 ablation suppressed the expression of SPTLC1 and SPTLC2 (serine palmitoyltransferase [SPT] long-chain base subunit ()1 2, respectively), which regulate de novo ceramide biosynthesis. We confirmed our previous findings that myocardial SPTLC1 and SPTLC2 levels are increased in heart failure patients. Consistently, αMHC-rtTA-KLF5 mice showed increased SPTLC1 and SPTLC2 expression, higher myocardial ceramide levels, and systolic dysfunction beginning 2 weeks after KLF5 induction. Treatment of αMHC-rtTA-KLF5 mice with myriocin that inhibits SPT, suppressed myocardial ceramide levels and alleviated systolic dysfunction. CONCLUSIONS KLF5 is induced during the development of ischemic heart failure in humans and mice and stimulates ceramide biosynthesis. Genetic or pharmacological inhibition of KLF5 in mice with MI prevents ceramide accumulation, alleviates eccentric remodeling, and increases ejection fraction. Thus, KLF5 emerges as a novel therapeutic target for the treatment of ischemic heart failure.
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Affiliation(s)
- Matthew Hoffman
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Dimitra Palioura
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
- Department of Biology, School of Basic Sciences, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Ioannis D. Kyriazis
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Maria Cimini
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Rachit Badolia
- University of Utah, Nora Eccles Harrison Cardiovascular Research and Training Institute (CVRTI), Division of Cardiovascular Medicine, Salt Lake City, UT, USA
| | - Sudarsan Rajan
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Erhe Gao
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Nikolas Nikolaidis
- Department of Biological Science, Center for Applied Biotechnology Studies, and Center for Computational and Applied Mathematics, College of Natural Sciences and Mathematics, California State University Fullerton, Fullerton, CA, USA
| | - P. Christian Schulze
- Department of Internal Medicine, Division of Cardiology, Angiology, Intensive Medical Care and Pneumology, University Hospital Jena, Jena, Germany
| | - Ira J. Goldberg
- Division of Endocrinology, Diabetes and Metabolism, New York University School of Medicine, New York, NY, USA
| | - Raj Kishore
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Vincent W. Yang
- School of Medicine, Stony Brook University, Stony Brook, NY, USA
| | | | | | - Craig H. Selzman
- University of Utah, Division of Cardiothoracic Surgery, Salt Lake City, UT, USA
| | - Stavros G. Drakos
- University of Utah, Nora Eccles Harrison Cardiovascular Research and Training Institute (CVRTI), Division of Cardiovascular Medicine, Salt Lake City, UT, USA
| | - Konstantinos Drosatos
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
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Bellis A, Mauro C, Barbato E, Ceriello A, Cittadini A, Morisco C. Stress-Induced Hyperglycaemia in Non-Diabetic Patients with Acute Coronary Syndrome: From Molecular Mechanisms to New Therapeutic Perspectives. Int J Mol Sci 2021; 22:E775. [PMID: 33466656 PMCID: PMC7828822 DOI: 10.3390/ijms22020775] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Revised: 01/08/2021] [Accepted: 01/10/2021] [Indexed: 01/08/2023] Open
Abstract
Stress-induced hyperglycaemia (SIH) at hospital admission for acute coronary syndrome is associated with poor outcome, especially in patients without known diabetes. Nevertheless, insulin treatment in these subjects was not correlated with the reduction of mortality. This is likely due to the fact that SIH in the context of an acute coronary syndrome, compared to that in known diabetes, represents an epiphenomenon of other pathological conditions, such as adrenergic and renin-angiotensin system over-activity, hyperglucagonaemia, increase of circulating free fatty acids and pancreatic beta-cell dysfunction, which are not completely reversed by insulin therapy and so worsen the prognosis. Thus, SIH may be considered not only as a biomarker of organ damage, but also as an indicator of a more complex therapeutic strategy in these subjects. The aim of this review is to analyse the molecular mechanisms by which SIH may favour a worse prognosis in non-diabetic patients with acute coronary syndrome and identify new therapeutic strategies, in addition to insulin therapy, for a more appropriate treatment and improved outcomes.
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Affiliation(s)
- Alessandro Bellis
- Unità Operativa Complessa Cardiologia con UTIC ed Emodinamica-Dipartimento Emergenza Accettazione, Azienda Ospedaliera “Antonio Cardarelli”, 80131 Napoli, Italy; (A.B.); (C.M.)
| | - Ciro Mauro
- Unità Operativa Complessa Cardiologia con UTIC ed Emodinamica-Dipartimento Emergenza Accettazione, Azienda Ospedaliera “Antonio Cardarelli”, 80131 Napoli, Italy; (A.B.); (C.M.)
| | - Emanuele Barbato
- Dipartimento di Scienze Biomediche Avanzate, Università Federico II, 80131 Napoli, Italy;
| | - Antonio Ceriello
- Department of Cardiovascular and Metabolic Diseases, IRCCS Multimedica, Sesto San Giovanni, 20099 Milan, Italy;
| | - Antonio Cittadini
- Dipartimento di Scienze Mediche Traslazionali, Università Federico II, 80131 Napoli, Italy;
| | - Carmine Morisco
- Dipartimento di Scienze Biomediche Avanzate, Università Federico II, 80131 Napoli, Italy;
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Zhao J, Conklin DJ, Guo Y, Zhang X, Obal D, Guo L, Jagatheesan G, Katragadda K, He L, Yin X, Prodhan MAI, Shah J, Hoetker D, Kumar A, Kumar V, Wempe MF, Bhatnagar A, Baba SP. Cardiospecific Overexpression of ATPGD1 (Carnosine Synthase) Increases Histidine Dipeptide Levels and Prevents Myocardial Ischemia Reperfusion Injury. J Am Heart Assoc 2020; 9:e015222. [PMID: 32515247 PMCID: PMC7429021 DOI: 10.1161/jaha.119.015222] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND Myocardial ischemia reperfusion (I/R) injury is associated with complex pathophysiological changes characterized by pH imbalance, the accumulation of lipid peroxidation products acrolein and 4-hydroxy trans-2-nonenal, and the depletion of ATP levels. Cardioprotective interventions, designed to address individual mediators of I/R injury, have shown limited efficacy. The recently identified enzyme ATPGD1 (Carnosine Synthase), which synthesizes histidyl dipeptides such as carnosine, has the potential to counteract multiple effectors of I/R injury by buffering intracellular pH and quenching lipid peroxidation products and may protect against I/R injury. METHODS AND RESULTS We report here that β-alanine and carnosine feeding enhanced myocardial carnosine levels and protected the heart against I/R injury. Cardiospecific overexpression of ATPGD1 increased myocardial histidyl dipeptides levels and protected the heart from I/R injury. Isolated cardiac myocytes from ATPGD1-transgenic hearts were protected against hypoxia reoxygenation injury. The overexpression of ATPGD1 prevented the accumulation of acrolein and 4-hydroxy trans-2-nonenal-protein adducts in ischemic hearts and delayed acrolein or 4-hydroxy trans-2-nonenal-induced hypercontracture in isolated cardiac myocytes. Changes in the levels of ATP, high-energy phosphates, intracellular pH, and glycolysis during low-flow ischemia in the wild-type mice hearts were attenuated in the ATPGD1-transgenic hearts. Two natural dipeptide analogs (anserine and balenine) that can either quench aldehydes or buffer intracellular pH, but not both, failed to protect against I/R injury. CONCLUSIONS Either exogenous administration or enhanced endogenous formation of histidyl dipeptides prevents I/R injury by attenuating changes in intracellular pH and preventing the accumulation of lipid peroxidation derived aldehydes.
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Affiliation(s)
- Jingjing Zhao
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Daniel J. Conklin
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Yiru Guo
- Division of Cardiovascular MedicineDepartment of MedicineUniversity of LouisvilleKY
| | - Xiang Zhang
- Department of ChemistryUniversity of LouisvilleKY
| | - Detlef Obal
- Department of Anesthesiology and Perioperative and Pain MedicineStanford UniversityPalo AltoCA
| | - Luping Guo
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Ganapathy Jagatheesan
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Kartik Katragadda
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Liqing He
- Department of ChemistryUniversity of LouisvilleKY
| | - Xinmin Yin
- Department of ChemistryUniversity of LouisvilleKY
| | | | - Jasmit Shah
- Department of MedicineThe Aga Khan UniversityMedical CollegeNairobiKenya
| | - David Hoetker
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Amit Kumar
- Department of Pharmaceutical SciencesUniversity of ColoradoDenverCO
| | - Vijay Kumar
- Department of Pharmaceutical SciencesUniversity of ColoradoDenverCO
| | - Michael F. Wempe
- Department of Pharmaceutical SciencesUniversity of ColoradoDenverCO
| | - Aruni Bhatnagar
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
| | - Shahid P. Baba
- Diabetes and Obesity CenterUniversity of LouisvilleKY
- Christina Lee Brown Envirome InstituteUniversity of LouisvilleKY
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Vecchié A, Montecucco F, Carbone F, Dallegri F, Bonaventura A. Diabetes and Vascular Disease: Is It All About Glycemia? Curr Pharm Des 2020; 25:3112-3127. [PMID: 31470783 DOI: 10.2174/1381612825666190830181944] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 08/24/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Diabetes is increasing over time, mainly driven by obesity, aging, and urbanization. Classical macro- and microvascular complications represent the final result of a complex interplay involving atherosclerosis at all stages. METHODS In this review, we aim at focusing on current updates in the pathophysiology of vascular disease in diabetes and discussing how new therapies might influence the management of these patients at high cardiovascular risk. Diabetes shows accelerated atherosclerosis with a larger inflammatory cell infiltrate, thus favoring the development of heart failure. 'Diabetic cardiomyopathy' perfectly describes a specific ischemia- and hypertension- independent entity due to diabetes-related metabolic alterations on myocardial function. Moreover, platelets from subjects with diabetes display a typical hyperreactivity explaining the stronger adhesion, activation, and aggregation. Additionally, diabetes provokes an exaggerated stimulation of the endothelium, with an increased release of reactive oxygen species and a reduced release of nitric oxide, both key elements of the endothelial dysfunction. Also, the coagulation cascade and leukocytes activate contributing to this pro-thrombotic environment. Neutrophils have been recently recognized to play a pivotal role by releasing neutrophil extracellular traps. Finally, microparticles from platelets, neutrophils or monocytes are detrimental effectors on the vessel wall and are involved both in vascular dysfunction and in thrombotic complications. CONCLUSION In light of these findings, the therapeutic management of diabetes needs to be mostly focused on limiting the progression of complications by targeting precise pathophysiological mechanisms rather than the mere glycemic control, which failed to markedly reduce the risk for macrovascular complications and mortality.
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Affiliation(s)
- Alessandra Vecchié
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy.,Virginia Commonwealth University, Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Richmond, Virginia, United States of America
| | - Fabrizio Montecucco
- First Clinic of Internal Medicine, Department of Internal Medicine and Centre of Excellence for Biomedical Research (CEBR), University of Genoa, 6 Viale Benedetto XV, 16132 Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genova - Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy
| | - Federico Carbone
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genova - Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy
| | - Franco Dallegri
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy.,IRCCS Ospedale Policlinico San Martino Genova - Italian Cardiovascular Network, 10 Largo Benzi, 16132 Genoa, Italy
| | - Aldo Bonaventura
- First Clinic of Internal Medicine, Department of Internal Medicine, University of Genoa, 6 viale Benedetto XV, 16132 Genoa, Italy.,Virginia Commonwealth University, Pauley Heart Center, Division of Cardiology, Department of Internal Medicine, Richmond, Virginia, United States of America
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10
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Buchalter DB, Kirby DJ, Egol KA, Leucht P, Konda SR. Can lessons learned about preventing cardiac muscle death be applied to prevent skeletal muscle death? Bone Joint Res 2020; 9:268-271. [PMID: 32728425 PMCID: PMC7376282 DOI: 10.1302/2046-3758.96.bjr-2019-0241.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
| | - David J Kirby
- NYU Langone Orthopedic Hospital, New York, New York, USA
| | - Kenneth A Egol
- NYU Langone Orthopedic Hospital, New York, New York, USA
| | - Philipp Leucht
- NYU Langone Orthopedic Hospital, New York, New York, USA
| | - Sanjit R Konda
- NYU Langone Orthopedic Hospital, New York, New York, USA
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11
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van Lavieren MA, Bax M, Stegehuis VE, van de Hoef TP, Wijntjens GWM, de Winter RJ, Koch KT, Henriques JPS, Meuwissen M, Sjauw KD, Piek JJ. Acute alterations in glucose homeostasis impact coronary microvascular function in patients presenting with ST-segment elevation myocardial infarction. Neth Heart J 2020; 28:161-170. [PMID: 31953778 PMCID: PMC7052118 DOI: 10.1007/s12471-020-01366-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Microvascular dysfunction in the setting of ST-segment myocardial infarction (STEMI) is thought to be related to stress-related metabolic changes, including acute glucose intolerance. The aim of this study was to assess the relationship between admission glucose levels and microvascular function in non-diabetic STEMI patients. Methods 92 consecutive patients with a first anterior-wall STEMI treated with primary percutaneous coronary intervention (PPCI) were enrolled. Blood glucose levels were determined immediately prior to PPCI. After successful PPCI, at 1‑week and 6‑month follow-up, Doppler flow was measured in culprit and reference coronary arteries to calculate coronary flow velocity reserve (CFVR), baseline (BMR) and hyperaemic (HMR) microvascular resistance. Results The median admission glucose was 8.3 (7.2–9.6) mmol/l respectively 149.4 mg/dl [129.6–172.8] and was significantly associated with peak troponin T (standardised beta coefficient [std beta] = 0.281; p = 0.043). Multivariate analysis revealed that increasing glucose levels were significantly associated with a decrease in reference vessel CFVR (std beta = −0.313; p = 0.002), dictated by an increase in rest average peak velocity (APV) (std beta = 0.216; p = 0.033), due to a decreasing BMR (std beta = −0.225; p = 0.038) in the acute setting after PPCI. These associations disappeared at follow-up. These associations were not found for the infarct-related artery. Conclusion Elevated admission glucose levels are associated with impaired microvascular function assessed directly after PPCI in first anterior-wall STEMI. This influence of glucose levels is an acute phenomenon and contributes to microvascular dysfunction through alterations in resting flow and baseline microvascular resistance.
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Affiliation(s)
- M A van Lavieren
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - M Bax
- Department of Cardiology, Haga Teaching Hospital, The Hague, The Netherlands
| | - V E Stegehuis
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - T P van de Hoef
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - G W M Wijntjens
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - R J de Winter
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - K T Koch
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - J P S Henriques
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands
| | - M Meuwissen
- Department of Cardiology, Amphia Hospital, Breda, The Netherlands
| | - K D Sjauw
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands.,Heart Center, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - J J Piek
- Amsterdam UMC, Heart Center, Department of Interventional Cardiology, Amsterdam Cardiovascular Sciences, University of Amsterdam, Amsterdam, The Netherlands.
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12
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Affiliation(s)
- Diem H Tran
- 1 Division of Cardiology Department of Internal Medicine University of Texas Southwestern Medical Center Dallas TX
| | - Zhao V Wang
- 1 Division of Cardiology Department of Internal Medicine University of Texas Southwestern Medical Center Dallas TX
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13
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Cardioprotective effects of insulin on carbon monoxide-induced toxicity in male rats. Hum Exp Toxicol 2018; 38:148-154. [DOI: 10.1177/0960327118788134] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Carbon monoxide (CO) poisoning is a significant cause of death especially in developing countries. The current study investigated cardioprotective effects of insulin in CO-poisoned rats. Male rats were exposed to 3000 ppm CO for 1 h. Insulin (100 and 120 U/kg intraperitoneally) was immediately administered after CO exposure and on the next 4 days, on a daily basis (a total of 5 doses). On day 5, animals were euthanized, and the hearts were harvested for Western blotting and histopathological studies. The electrocardiograms (ECG) were recorded postexposure to CO and after the completion of insulin treatment period. Histopathological evaluations showed reduction of myocardial necrosis in insulin-treated animals compared to controls. BAX/BCL2 ratio, as a proapoptotic index, was significantly reduced in treatment groups ( p < 0.01). The ECG findings showed no differences among groups; also, compared to control animals, myocardial Akt levels were not markedly affected by insulin. The current study showed that insulin significantly reduces myocardial necrotic and apoptotic indices in CO-poisoned rats.
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14
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Mert H, Yılmaz H, Irak K, Yıldırım S, Mert N. Investigation of the Protective Effect of Kefir against Isoproterenol Induced Myocardial Infarction in Rats. Korean J Food Sci Anim Resour 2018; 38:259-272. [PMID: 29805276 PMCID: PMC5960824 DOI: 10.5851/kosfa.2018.38.2.259] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 01/26/2018] [Accepted: 01/26/2018] [Indexed: 12/20/2022] Open
Abstract
This study aims to investigate the protective effects of kefir against myocardial infarction induced by isoproterenol (ISO). The rats were randomly divided into 4 groups, each group consisting of 8 rats. The control group, the kefir group (5 mL/kg/d kefir administered to rats as intra-gastric gavage for 60 d), the ISO group (100 mg/kg ISO was administered to rats, s.c. on 61. and 62. d), and kefir+ISO group (5 mL/kg/d kefir was administered to rats intra gastric gavage for 60 days prior to ISO, 100 mg/kg in two doses on day 61 and 62). 12 h after the last ISO dose, all rats were decapitated and their blood samples were collected. Cardiac tissue was reserved for histopathological examination. creatine kinase (CK), alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), triglycerides, total cholesterol,very low density lipoprotein (VLDL), low density lipoprotein (LDL), high density lipoprotein (HDL) and glucose were measured by autoanalyzer, whole blood malondialdehyde (MDA), glutathione (GSH) and plasma advanced oxidation protein products (AOPP) levels were measured spectrophotometrically. It was determined that in the group of kefir+ISO, the levels of AST (p<0.001), CK (p<0.001), LDH (p<0.001), MDA (p<0.001) and AOPP (p<0.001) were decreased, while the GSH (p<0.05) increased, compared to ISO group. There were no significant changes in lipid profile and glucose levels between these two groups. In conclusion, by examining cardiac enzymes and histopathological changes in cardiac tissue, it can be concluded that the administration of kefir in myocardial infarction induced by ISO can protect the heart with its antioxidant characteristic and minimize the toxic damage created by ISO.
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Affiliation(s)
- Handan Mert
- Department of Biochemistry, Yuzuncu Yil University, Faculty of Veterinary Medicine, Van 65090, Turkey
| | - Hikmet Yılmaz
- Department of Biochemistry, Yuzuncu Yil University, Faculty of Veterinary Medicine, Van 65090, Turkey
| | - Kıvanç Irak
- Department of Biochemistry, Siirt University, Faculty of Veterinary Medicine, Siirt, 56100, Turkey
| | - Serkan Yıldırım
- Department of Pathology, Ataturk University, Faculty of Veterinary Medicine, Erzurum, 25030, Turkey
| | - Nihat Mert
- Department of Biochemistry, Yuzuncu Yil University, Faculty of Veterinary Medicine, Van 65090, Turkey
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15
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El Ouazzani J, Ghalem A, El Ouazzani G, Ismaili N, El Ouafi N. Management of hyperglycemia during and in the immediate follow-up of acute coronary syndrome. J Saudi Heart Assoc 2018; 30:113-121. [PMID: 29910582 PMCID: PMC6000893 DOI: 10.1016/j.jsha.2017.08.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Revised: 07/20/2017] [Accepted: 08/21/2017] [Indexed: 12/16/2022] Open
Abstract
Diabetes is a serious, frequent, and insidious morbidity and mortality risk factor in patients with coronary artery disease. It has been shown that carbohydrate metabolism disorders are common in acute coronary syndromes (ACSs): 30-40% of patients have diabetes, 25-36% have an intolerance to carbohydrates, and only 30-40% have a normal carbohydrate profile. Hyperglycemia occurring either in diabetic or nondiabetic patients is strongly associated with a poor prognosis. It increases the extent of myocardial necrosis, and the risk of recurrence acute coronary syndrome and hemodynamic complications, particularly heart failure and cardiogenic shock, reflecting the importance of optimal management of glucose metabolism abnormalities. The objective of this article is to suggest a screening and management guide for carbohydrate metabolism disorders during and in the immediate follow-up of ACS in diabetic and nondiabetic patients. Screening must be systematic in any patient admitted for ACS, and based on hemoglobin A1c and oral glucose tolerance testing. Treatment of hyperglycemia in the cardiology intensive care unit is recommended in any patient admitted with hyperglycemia >1.80 g/L or postfeeding blood glucose level >1.40 g/L, and should be based on intravenous insulin with concomitant infusion of glucose solution under strict monitoring. Once the patient is no longer in intensive care, intravenous insulin therapy is no longer recommended, and the passage to a fixed insulin therapy regimen or to oral antidiabetics should be considered in consultation with diabetologists. During the rehabilitation phase, good glycemic control improves both prognosis and survival.
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Affiliation(s)
- Jamal El Ouazzani
- Department of Cardiology, Mohammed VI University Hospital Center, BP 4806 Oujda Université, 60049 Oujda, Morocco
| | - Amine Ghalem
- Department of Cardiology, Mohammed VI University Hospital Center, BP 4806 Oujda Université, 60049 Oujda, Morocco
| | - Ghizlane El Ouazzani
- Department of Cardiology, Mohammed VI University Hospital Center, BP 4806 Oujda Université, 60049 Oujda, Morocco
| | - Nabila Ismaili
- Department of Cardiology, Mohammed VI University Hospital Center, BP 4806 Oujda Université, 60049 Oujda, Morocco
| | - Noha El Ouafi
- Department of Cardiology, Mohammed VI University Hospital Center, BP 4806 Oujda Université, 60049 Oujda, Morocco
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16
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Pittas AG, Siegel RD, Lau J. Insulin Therapy and In-Hospital Mortality in Critically Ill Patients: Systematic Review and Meta-analysis of Randomized Controlled Trials. JPEN J Parenter Enteral Nutr 2017; 30:164-72. [PMID: 16517961 DOI: 10.1177/0148607106030002164] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Hyperglycemia is common in critically ill hospitalized patients and has been associated with adverse outcomes, including increased mortality. In this review, we examine the effect of insulin therapy on mortality in critically ill patients. METHODS We updated our previous systematic review and meta-analysis to include recently published trials that report data on the effect of insulin therapy initiated during hospitalization on mortality in adult patients with a critical illness. We also include a short primer on the methods of systematic reviews and meta-analyses, outlining the specific steps and challenges of this methodology. We performed an electronic search in the English language of MEDLINE and the Cochrane Controlled Clinical Trials Register and a hand search of key journals and relevant review articles for randomized controlled trials that reported mortality data on critically ill hospitalized adult patients treated with insulin (regardless of method of administration). RESULTS We identified 38 relevant studies that entered the analysis. We found that therapy with insulin in adult patients hospitalized for a critical illness, other than hyperglycemic crises, may decrease mortality in certain groups of patients. The beneficial effect of insulin was evident in the surgical intensive care unit (relative risk [RR], 0.58; confidence interval [CI], 0.22-0.62) and in patients with diabetes (RR, 0.76; CI, 0.62-0.92). There was a trend toward benefit in patients with acute myocardial infarction (RR, 0.89; CI, 0.76-1.03). Targeting euglycemia appears to be the main determinant of the benefit of insulin therapy (RR, 0.73; CI, 0.57-0.94). CONCLUSIONS Insulin therapy in adult patients hospitalized for a critical illness, other than hyperglycemic crises, may decrease mortality in certain groups of patients.
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Affiliation(s)
- Anastassios G Pittas
- Division of Endocrinology, Diabetes and Metabolism and Institute for Clinical Research and Health Policy Studies, Tufts-New England Medical Center, 750 Washington Street #268, Boston, MA 02111, USA.
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17
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Williams IL, Noronha B, Zaman AG. Review: The management of acute myocardial infarction in patients with diabetes mellitus. ACTA ACUST UNITED AC 2016. [DOI: 10.1177/14746514030030050201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Diabetic subjects are more likely to experience a myocardial infarction and have worse outcomes compared to non-diabetic subjects. The underlying pathophysiology of the atherosclerotic process is not significantly different in diabetic subjects, but the prothrombotic and procoagulant state with which diabetes is associated is thought to contribute to the higher incidence of and worse prognosis after myocardial infarction. Difficulties of re-establishing vessel patency by thrombolytic or mechanical means contribute to the high morbidity and mortality. The diffuse nature of arterial disease with accompanying metabolic derangement contribute to impaired compensatory mechanisms, increased infarct size and a disproportionately more substantial impairment of left ventricular function. The newer adjuvant antithrombotic and anticoagulant agents have particular roles in management therefore and careful modulation of glucose metabolism in the acute and follow-up phase of an infarct may favourably influence outcome.
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Affiliation(s)
- Ian L Williams
- Department of Cardiology, Guy's, King's and St Thomas' School of Medicine, London, UK,
| | - Brian Noronha
- Department of Cardiology, Guy's, King's and St Thomas' School of Medicine, London, UK
| | - Azfar G Zaman
- Department of Cardiology, Freeman Hospital, Newcastle upon Tyne, UK
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18
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Van Wezel HB. Glucose-Insulin-Potassium Techniques in Cardiac Surgery: Historical Overview and Future Perspectives. Semin Cardiothorac Vasc Anesth 2016; 10:224-7. [PMID: 16959755 DOI: 10.1177/1089253206291146] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Since the days of the first cardiac surgical operations in the previous century, myocardial preservation has been an essential component of the successful outcome of these procedures. Although many different techniques to achieve myocardial preservation and modulation have been described in the past 50 years, this review focuses on the use of glucose, insulin, and potassium (GIK) and its effect on ischemic and postischemic myocardium.
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Affiliation(s)
- Harry B Van Wezel
- Department of Anesthesiology, Academic Medical Center, Amsterdam, AZ Amsterdam, The Netherlands.
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19
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Quinn DW, Pagano D, Bonser RS. Glucose and Insulin Influences on Heart and Brain in Cardiac Surgery. Semin Cardiothorac Vasc Anesth 2016; 9:173-8. [PMID: 15920645 DOI: 10.1177/108925320500900213] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The elective global ischemia of on-pump coronary artery bypass surgery contributes to the incidence of postoperative mortality, complications, and use of resources. In addition to cardiopulmonary bypass and techniques for myocardial protection such as aortic cross clamp, ventricular fibrillation, and cardioplegia, the administration of systemic glucose-insulinpotassium (GIK) in the perioperative period may act as both a metabolic modulator and potential inodilator. GIK may therefore serve to protect the myocardium and promote adequate cardiac and hemodynamic performance that would improve patient recovery. Cell, tissue, and animal experiments have determined a number of mechanisms of action by which this may be achieved, with increasing focus on insulin as the key component. The original concepts centered on GIK during or after ischemia switching metabolism away from that based on nonesterified fatty acids toward a more favorable glucose-based metabolism and thus improving the efficiency of adenosine triphosphate production and glycogen preservation. Insulin's ability to reduce intracellular fatty acid metabolism may also reduce cellular membrane damage. More recently other mechanisms have also been suggested, including osmotic, oxygen free radical scavenging, and antiapoptotic and anti-inflammatory effects. However, trials that have examined the role of GIK in cardiac surgery have been small, open label, and involved a wide variety of regimens. They have demonstrated improved glycogen preservation, reduced infarct size, reduced incidences of dysrhythmias, need for inotropic agents, and low cardiac output state, and overall reduced lengths of stay. The perceived need to achieve strict blood glucose control to reduce neurologic injury and improve overall mortality have conflicted with its practical difficulties, particularly during cold cardiopulmonary bypass, and the exact role of supplemental glucose administration and resulting hyperglycemia require re-examination.
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Affiliation(s)
- David W Quinn
- Department of Cardiothoracic Surgery, Queen Elizabeth Hospital, University Hospital Birmingham NHS Trust, Edgbaston, United Kingdom
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20
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Affiliation(s)
- J. G. Bovill
- Department of Anesthesiology, Leiden University Medical Centre, Albinusdreef 2 (PO Box 9600), 2300 RC Leiden, The Netherlands
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21
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Nam MCY, Byrne CD, Kaski JC, Greaves K. Insulin in Acute Coronary Syndrome: a Narrative Review with Contemporary Perspectives. Cardiovasc Drugs Ther 2016; 30:493-504. [DOI: 10.1007/s10557-016-6679-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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22
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Effect of glucose-insulin-potassium on hyperlactataemia in patients undergoing valvular heart surgery: A randomised controlled study. Eur J Anaesthesiol 2016; 32:555-62. [PMID: 25760680 DOI: 10.1097/eja.0000000000000250] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
BACKGROUND Hyperlactataemia represents oxygen imbalance in the tissues and its occurrence during cardiac surgery is associated with adverse outcomes. Glucose-insulin-potassium (GIK) infusion confers myocardial protection against ischaemia-reperfusion injury and has the potential to reduce lactate release while improving its clearance. OBJECTIVES The objective of this study is to compare the effect of GIK on the incidence of hyperlactataemia in patients undergoing valvular heart surgery. DESIGN A randomised controlled study. SETTING Single university teaching hospital. PATIENTS One hundred and six patients scheduled for elective valvular heart surgery with at least two of the known risk factors for hyperlactataemia. INTERVENTION Patients were randomly allocated to receive either GIK solution (insulin 0.1 IU kg(-1) h(-1) and an infusion of 30% dextrose and 80 mmol l(-1) potassium at 0.5 ml kg(-1) h(-1)) or 0.9% saline (control) throughout surgery. MAIN OUTCOME MEASURES The primary outcome was the incidence of hyperlactataemia (lactate ≥ 4 mmol l(-1)) during the operation and until 24 h after the operation. Secondary outcomes included haemodynamic parameters, use of vasopressor or inotropic drugs, and fluid balance until 24 h postoperatively. Postoperative morbidity endpoints were also assessed. RESULTS The incidences of hyperlactataemia were similar in the groups (32/53 patients in each of the control and GIK groups, P > 0.999). There were no intergroup differences in haemodynamic parameters, use of vasopressor and inotropic drugs, or fluid balance. The incidences of postoperative morbidity endpoints were similar in both groups. CONCLUSION Despite its theoretical advantage, GIK did not provide beneficial effects in terms of the incidence of hyperlactataemia or outcome in patients undergoing valvular heart surgery. TRIAL REGISTRATION Clinicaltrials.gov identifier: NCT01825720.
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Taegtmeyer H, Young ME, Lopaschuk GD, Abel ED, Brunengraber H, Darley-Usmar V, Des Rosiers C, Gerszten R, Glatz JF, Griffin JL, Gropler RJ, Holzhuetter HG, Kizer JR, Lewandowski ED, Malloy CR, Neubauer S, Peterson LR, Portman MA, Recchia FA, Van Eyk JE, Wang TJ. Assessing Cardiac Metabolism: A Scientific Statement From the American Heart Association. Circ Res 2016; 118:1659-701. [PMID: 27012580 DOI: 10.1161/res.0000000000000097] [Citation(s) in RCA: 185] [Impact Index Per Article: 23.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In a complex system of interrelated reactions, the heart converts chemical energy to mechanical energy. Energy transfer is achieved through coordinated activation of enzymes, ion channels, and contractile elements, as well as structural and membrane proteins. The heart's needs for energy are difficult to overestimate. At a time when the cardiovascular research community is discovering a plethora of new molecular methods to assess cardiac metabolism, the methods remain scattered in the literature. The present statement on "Assessing Cardiac Metabolism" seeks to provide a collective and curated resource on methods and models used to investigate established and emerging aspects of cardiac metabolism. Some of those methods are refinements of classic biochemical tools, whereas most others are recent additions from the powerful tools of molecular biology. The aim of this statement is to be useful to many and to do justice to a dynamic field of great complexity.
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24
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Gero D, Szabo C. Salvage of nicotinamide adenine dinucleotide plays a critical role in the bioenergetic recovery of post-hypoxic cardiomyocytes. Br J Pharmacol 2015. [PMID: 26218637 DOI: 10.1111/bph.13252] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND AND PURPOSE Ischaemic heart disease can lead to serious, life-threatening complications. Traditional therapies for ischaemia aim to increase oxygen delivery and reduce the myocardial ATP consumption by increasing the coronary perfusion and by suppressing cardiac contractility, heart rate or blood pressure. An adjunctive treatment option for ischaemia is to improve or optimize myocardial metabolism. EXPERIMENTAL APPROACH Metabolic suppression in the ischaemic heart is characterized by reduced levels of high-energy molecules: ATP and NAD(+) . Because NAD(+) is required for most metabolic processes that generate ATP, we hypothesized that restoration of NAD(+) would be a prerequisite for ATP regeneration and examined the role of the major NAD(+) anabolic and catabolic pathways in the bioenergetic restoration process following oxygen-glucose deprivation injury in a cardiomyocyte cell line (H9c2 cells). KEY RESULTS Salvage of NAD(+) via nicotinamide phosphoribosyl transferase was essential for bioenergetic recovery in cardiomyocytes. Blockade of nicotinamide phosphoribosyl transferase prevented the restoration of the cellular ATP pool following oxygen-glucose deprivation injury by inhibiting both the aerobic and anaerobic metabolism in the cardiomyocytes. NAD(+) consumption by PARP-1 also undermined the recovery processes, and PARP inhibition significantly improved the metabolism and increased cellular ATP levels in cardiomyocytes. CONCLUSIONS AND IMPLICATIONS We conclude that the NAD(+) salvage pathway is essential for bioenergetic recovery in post-hypoxic cardiomyocytes and PARP inhibition may represent a potential future therapeutic intervention in ischaemic heart disease.
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Affiliation(s)
- Domokos Gero
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, TX, USA
| | - Csaba Szabo
- Department of Anesthesiology, University of Texas Medical Branch, Galveston, TX, USA
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25
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Ali-Hassan-Sayegh S, Mirhosseini SJ, Zeriouh M, Dehghan AM, Shahidzadeh A, Karimi-Bondarabadi AA, Sabashnikov A, Popov AF. Safety and efficacy of glucose–insulin–potassium treatment in coronary artery bypass graft surgery and percutaneous coronary intervention. Interact Cardiovasc Thorac Surg 2015; 21:667-76. [DOI: 10.1093/icvts/ivv222] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 07/09/2015] [Indexed: 11/13/2022] Open
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Soliman M. Insulin treatment before resuscitation following hemorrhagic shock improves cardiac contractility and protects the myocardium in the isolated rat heart. J Emerg Trauma Shock 2015; 8:144-8. [PMID: 26229297 PMCID: PMC4520027 DOI: 10.4103/0974-2700.160714] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2014] [Indexed: 01/04/2023] Open
Abstract
Background: Insulin has been shown to exert positive inotropic effects in several in vivoex vivo models and in human hearts. Resuscitation following hemorrhagic shock results in myocardial contractile dysfunction. However, the optimal timing for treatment with insulin for the cardioprotection effects is unclear. Objectives: The objective of this study was to test the hypothesis that treatment with insulin before resuscitation provides better cardioprotection than treatment with insulin after resuscitation. Materials and Methods: Rats were assigned to 3 experimental groups (n = 6 per group): (1) Hemorrhagic shock and resuscitation, (2) hemorrhagic shock resuscitated then treated with insulin and (3) hemorrhagic shock treated with insulin before resuscitation. Rats were hemorrhaged for 60 min to rach mean arterial blood pressure of 40 mmHg. Rats were resuscitated in vivo by reinfusion of the shedded blood to restore normotension and monitored for 60 min. Rats were treated or not with insulin 200 μU/g body weight intramuscularly either before or after resuscitation. The maximum of the left ventricular developed pressure (+dP/dt) was measured for 60 min in the isolated perfused hearts using the Langendorff method. Blood samples were obtained for measurements of tumor necrosis factor-alpha (TNF-α). Results: Treatment with insulin before resuscitation following hemorrhagic shock significantly elevated max dP/dt compared with insulin treatment after resuscitation and the untreated group. TNF-α levels were lower in the insulin treatment before resuscitation compared to the treatment after resuscitation and the untreated group. Conclusion: Insulin treatment before resuscitation following hemorrhagic shock provides better cardiac protection than treatment with insulin after resuscitation, as evidenced by the improved myocardial contractility, preservation of myocardial structure. The mechanism of cardiac protection involves decrease in the inflammatory response to shock by lowering the levels of TNF.
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Affiliation(s)
- Mona Soliman
- Department of Physiology, College of Medicine, King Saud University, Riyadh, Saudi Arabia
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Shi YF, Liu N, Li YX, Song CL, Song XJ, Zhao Z, Liu B. Insulin protects H9c2 rat cardiomyoblast cells against hydrogen peroxide-induced injury through upregulation of microRNA-210. Free Radic Res 2015; 49:1147-55. [PMID: 25968948 DOI: 10.3109/10715762.2015.1050588] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Insulin protects cardiomyocytes from reactive oxygen species (ROS)-induced apoptosis after ischemic/reperfusion injury, but the mechanism is not clear. This study investigated the protective mechanism of insulin in preventing cardiomyocyte apoptosis from ROS injury. METHODS Rat cardiomyoblast H9c2 cells were treated with hydrogen peroxide (H2O2) or insulin at various concentrations for various periods of time, or with insulin and H2O2 for various periods of time. Cell viability was measured by the methylthiazolydiphenyl-tetrazolium bromide method. Cellular miR-210 levels were quantified using real-time RT-PCR. MiR-210 expression was also manipulated through lentivirus-mediated transfection. LY294002 was used to investigate involvement of the phosphatidylinositol 3-kinase (PI3K)/Akt pathway. RESULTS The percentage of viable cells was significantly and inversely associated with H2O2 concentration, an effect that was seemingly attenuated by insulin pretreatment. Treatments with H2O2 or insulin were associated with a significant increase in miR-210 levels. Manipulation of miR-210 expression by gene transfection showed that miR-210 could attenuate H2O2-induced cellular injury. Inhibition of the PI3K/Akt pathway by the Akt inhibitor LY294002 was associated with a decrease in miR-210 expression. CONCLUSION Insulin stimulated the expression of miR-210 through the PI3K/Akt pathway, resulting in a protective effect against cardiomyocyte injury that had been induced by H2O2/oxygen species. Our results provide novel evidence regarding the mechanism underlying the protective effect of insulin.
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Affiliation(s)
- Y-F Shi
- Department of Cardiology, The Second Hospital of Jilin University, Jilin University , Changchun , China
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28
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George S, Dale J, Stanisstreet D. A guideline for the use of variable rate intravenous insulin infusion in medical inpatients. Diabet Med 2015; 32:706-13. [PMID: 25980646 DOI: 10.1111/dme.12756] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/19/2015] [Indexed: 12/12/2022]
Abstract
The present paper summarizes the key recommendations in a recent publication produced by the Joint British Diabetes Societies for Inpatient Care on the use of variable rate i.v. insulin infusion in 'medical' inpatients. The full guideline is available at http://www.diabetologists-abcd.org.uk/JBDS/JBDS_IP_VRIII.pdf and is designed to be a practical guide that can used by any healthcare professional who manages medical inpatients with hyperglycaemia. Its main aim is to allow variable rate i.v. insulin infusion to be used safely, effectively and efficiently for this specific group of inpatients.
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Affiliation(s)
- S George
- Department of Diabetes and Endocrinology, East and North Herts NHS Trust, Lister Hospital, Stevenage, UK
| | - J Dale
- Dudley Group NHS Foundation Trust, Dudley, UK
| | - D Stanisstreet
- Department of Diabetes and Endocrinology, East and North Herts NHS Trust, Lister Hospital, Stevenage, UK
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Obesity induced by high fat diet attenuates postinfarct myocardial remodeling and dysfunction in adult B6D2F1 mice. J Mol Cell Cardiol 2015; 84:154-61. [PMID: 25953257 DOI: 10.1016/j.yjmcc.2015.04.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 04/27/2015] [Accepted: 04/28/2015] [Indexed: 01/09/2023]
Abstract
Obesity is a major risk factor for cardiovascular morbidity and mortality. However, some studies suggest that among patients with established cardiovascular disease, obesity is associated with better prognosis, a phenomenon described as the obesity paradox. In this study we tested the hypothesis that obesity with hyperinsulinemia and without hyperglycemia attenuates the impact of transient coronary occlusion on left ventricular remodeling and function. B6D2F1 mice from both genders fed with a high fat diet (HFD) or control diet for 6 months were subjected to 45 min of coronary occlusion and 28 days of reperfusion. Left ventricular dimensions and function were assessed by serial echocardiography, and infarct size was determined by Picrosirius red staining. HFD mice developed obesity with hypercholesterolemia and hyperinsulinemia in the absence of hyperglycemia or hypertension. During the period of feeding, no changes were observed in ventricular mass, volume or function, or in vascular reactivity. HFD attenuated the consequences of transient coronary occlusion as shown by a marked reduction in infarct size (51%, P = 0.021) and cardiac dilation, as well as improved left ventricular function as compared to control diet animals. These effects were associated with enhanced reperfusion injury salvage kinases (RISK) pathway function in HFD hearts shown as increased Akt and GSK3β phosphorylation. These results demonstrate that dietary obesity without hyperglycemia or hypertension attenuates the impact of ischemia/reperfusion injury in association with increased insulin signaling and RISK activation. This study provides experimental support to the controversial concept of the obesity paradox in humans.
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Inserte J, Garcia-Dorado D. The cGMP/PKG pathway as a common mediator of cardioprotection: translatability and mechanism. Br J Pharmacol 2015; 172:1996-2009. [PMID: 25297462 DOI: 10.1111/bph.12959] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 09/16/2014] [Accepted: 09/26/2014] [Indexed: 12/24/2022] Open
Abstract
Cardiomyocyte cell death occurring during myocardial reperfusion (reperfusion injury) contributes to final infarct size after transient coronary occlusion. Different interrelated mechanisms of reperfusion injury have been identified, including alterations in cytosolic Ca(2+) handling, sarcoplasmic reticulum-mediated Ca(2+) oscillations and hypercontracture, proteolysis secondary to calpain activation and mitochondrial permeability transition. All these mechanisms occur during the initial minutes of reperfusion and are inhibited by intracellular acidosis. The cGMP/PKG pathway modulates the rate of recovery of intracellular pH, but has also direct effect on Ca(2+) oscillations and mitochondrial permeability transition. The cGMP/PKG pathway is depressed in cardiomyocytes by ischaemia/reperfusion and preserved by ischaemic postconditioning, which importantly contributes to postconditioning protection. The present article reviews the mechanisms and consequences of the effect of ischaemic postconditioning on the cGMP/PKG pathway, the different pharmacological strategies aimed to stimulate it during myocardial reperfusion and the evidence, limitations and promise of translation of these strategies to the clinical practice. Overall, the preclinical and clinical evidence suggests that modulation of the cGMP/PKG pathway may be a therapeutic target in the context of myocardial infarction.
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Affiliation(s)
- Javier Inserte
- Cardiology Department, Vall d'Hebron University Hospital and Research Institute, Universitat Autònoma de Barcelona, Barcelona, Spain
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31
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Jin PY, Zhang HS, Guo XY, Liang WF, Han QF. Glucose-insulin-potassium therapy in patients with acute coronary syndrome: a meta-analysis of randomized controlled trials. BMC Cardiovasc Disord 2014; 14:169. [PMID: 25425404 PMCID: PMC4256054 DOI: 10.1186/1471-2261-14-169] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 11/18/2014] [Indexed: 01/08/2023] Open
Abstract
Background Glucose-insulin-potassium (GIK) has been advocated in the setting of acute coronary syndrome (ACS) to reduce ischemia-related arrhythmias and myocardial injury. We conducted a meta-analysis of randomized controlled trials (RCTs) to assess whether the use of GIK infusions >3 or <3 hours after the onset of symptoms reduce mortality or cardiac arrest. Methods Electronic databases (Medline, EMBASE, and Cochrane Central Register of Controlled Trials) and references of retrieved articles were searched for RCTs evaluating the effect of GIK infusions, <3 hours or >3 hours after the onset of symptoms, on mortality and/or cardiac arrest. Pooled odds ratios (ORs) with 95% confidence intervals (CIs) were calculated for each outcome. Results Nine trials were identified and eligible for review. The summary OR for in-hospital mortality was 1.01 (95% CI 0.94 to 1.09), based on 2,542 deaths among 27,294 patients. The subgroup analysis according to the study enrollment time (within 3 hours [OR, 0.77, 95% CI 0.50-1.16], vs. >3 hours [OR, 0.90; 95% CI, 0.67-1.21]) did not reveal any difference in mortality. Conclusions Administration of GIK in ACS patients does not significantly reduce mortality whether or not GIK administration >3 or <3 hours after the onset of symptoms. Electronic supplementary material The online version of this article (doi:10.1186/1471-2261-14-169) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pei-Yin Jin
- Department of Cardiovascular Medicine, The People's Hospital of Anyang, Anyang, Henan, China.
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32
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Selker HP, Udelson JE, Massaro JM, Ruthazer R, D'Agostino RB, Griffith JL, Sheehan PR, Desvigne-Nickens P, Rosenberg Y, Tian X, Vickery EM, Atkins JM, Aufderheide TP, Sayah AJ, Pirrallo RG, Levy MK, Richards ME, Braude DA, Doyle DD, Frascone RJ, Kosiak DJ, Leaming JM, Van Gelder CM, Walter GP, Wayne MA, Woolard RH, Beshansky JR. One-year outcomes of out-of-hospital administration of intravenous glucose, insulin, and potassium (GIK) in patients with suspected acute coronary syndromes (from the IMMEDIATE [Immediate Myocardial Metabolic Enhancement During Initial Assessment and Treatment in Emergency Care] Trial). Am J Cardiol 2014; 113:1599-605. [PMID: 24792735 DOI: 10.1016/j.amjcard.2014.02.010] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/21/2014] [Accepted: 02/21/2014] [Indexed: 01/04/2023]
Abstract
The Immediate Myocardial Metabolic Enhancement During Initial Assessment and Treatment in Emergency care Trial of very early intravenous glucose-insulin-potassium (GIK) for acute coronary syndromes (ACS) in out-of-hospital emergency medical service (EMS) settings showed 80% reduction in infarct size at 30 days, suggesting potential longer-term benefits. Here we report 1-year outcomes. Prespecified 1-year end points of this randomized, placebo-controlled, double-blind, effectiveness trial included all-cause mortality and composites including cardiac arrest, mortality, or hospitalization for heart failure (HF). Of 871 participants randomized to GIK versus placebo, death occurred within 1 year in 11.6% versus 13.5%, respectively (unadjusted hazard ratio [HR] 0.83, 95% confidence interval [CI] 0.57 to 1.23, p = 0.36). The composite of cardiac arrest or 1-year mortality was 12.8% versus 17.0% (HR 0.71, 95% CI 0.50 to 1.02, p = 0.06). The composite of hospitalization for HF or mortality within 1 year was 17.2% versus 17.2% (HR 0.98, 95% CI 0.70 to 1.37, p = 0.92). The composite of mortality, cardiac arrest, or HF hospitalization within 1 year was 18.1% versus 20.4% (HR 0.85, 95% CI 0.62 to 1.16, p = 0.30). In patients presenting with suspected ST elevation myocardial infarction, HRs for 1-year mortality and the 3 composites were, respectively, 0.65 (95% CI 0.33 to 1.27, p = 0.21), 0.52 (95% CI 0.30 to 0.92, p = 0.03), 0.63 (95% CI 0.35 to 1.16, p = 0.14), and 0.51 (95% CI 0.30 to 0.87, p = 0.01). In patients with suspected acute coronary syndromes, serious end points generally were lower with GIK than placebo, but the differences were not statistically significant. However, in those with ST elevation myocardial infarction, the composites of cardiac arrest or 1-year mortality, and of cardiac arrest, mortality, or HF hospitalization within 1 year, were significantly reduced.
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Garcia-Dorado D, Rodríguez-Sinovas A, Ruiz-Meana M, Inserte J. Protección contra el daño miocárdico por isquemia-reperfusión en la práctica clínica. Rev Esp Cardiol 2014. [DOI: 10.1016/j.recesp.2014.01.011] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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Sun Q, Li J, Gao F. New insights into insulin: The anti-inflammatory effect and its clinical relevance. World J Diabetes 2014; 5:89-96. [PMID: 24765237 PMCID: PMC3992527 DOI: 10.4239/wjd.v5.i2.89] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 03/04/2014] [Indexed: 02/05/2023] Open
Abstract
Hyperglycemia, a commonly exhibited metabolic disorder in critically ill patients, activates the body’s inflammatory defense mechanism, causing the waterfall release of numerous inflammatory mediators and cytokines, and eventually leads to organ damage. As the only glucose-lowering hormone in the body, insulin not only alleviates the detrimental effects of hyperglycemia through its metabolic regulation, but also directly modulates inflammatory mediators and acts upon immune cells to enhance immunocompetence. In this sense, hyperglycemia is pro-inflammatory whereas insulin is anti-inflammatory. Therefore, during the past 50 years, insulin has not only been used in the treatment of diabetes, but has also been put into practical use in dealing with cardiovascular diseases and critical illnesses. This review summarizes the recent advances regarding the anti-inflammatory effects of insulin in both basic research and clinical trials, with the hope of aiding in the design of further experimental research and promoting effective insulin administration in clinical practice.
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Garcia-Dorado D, Rodríguez-Sinovas A, Ruiz-Meana M, Inserte J. Protection against myocardial ischemia-reperfusion injury in clinical practice. ACTA ACUST UNITED AC 2014; 67:394-404. [PMID: 24774733 DOI: 10.1016/j.rec.2014.01.010] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 01/22/2014] [Indexed: 12/28/2022]
Abstract
Even when reperfusion therapy is applied as early as possible, survival and quality of life are compromised in a considerable number of patients with ST-segment elevation acute myocardial infarction. Some cell death following transient coronary occlusion occurs during reperfusion, due to poor handling of calcium in the sarcoplasmic reticulum-mitochondria system, calpain activation, oxidative stress, and mitochondrial failure, all promoted by rapid normalization of intracellular pH. Various clinical trials have shown that infarct size can be limited by nonpharmacological strategies--such as ischemic postconditioning and remote ischemic conditioning--or by drugs--such as cyclosporine, insulin, glucagon-like peptide-1 agonists, beta-blockers, or stimulation of cyclic guanosine monophosphate synthesis. However, some clinical studies have yielded negative results, largely due to a lack of consistent preclinical data or a poor design, especially delayed administration. Large-scale clinical trials are therefore necessary, particularly those with primary clinical variables and combined therapies that consider age, sex, and comorbidities, to convert protection against reperfusion injury into a standard treatment for patients with ST-segment elevation acute myocardial infarction.
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Affiliation(s)
- David Garcia-Dorado
- Hospital Universitario e Institut de Recerca Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain.
| | - Antonio Rodríguez-Sinovas
- Hospital Universitario e Institut de Recerca Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Marisol Ruiz-Meana
- Hospital Universitario e Institut de Recerca Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Javier Inserte
- Hospital Universitario e Institut de Recerca Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
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36
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Wang W, Lopaschuk GD. Metabolic therapy for the treatment of ischemic heart disease: reality and expectations. Expert Rev Cardiovasc Ther 2014; 5:1123-34. [DOI: 10.1586/14779072.5.6.1123] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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37
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Progression in attenuating myocardial reperfusion injury: An overview. Int J Cardiol 2014; 170:261-9. [DOI: 10.1016/j.ijcard.2013.11.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 09/21/2013] [Accepted: 11/02/2013] [Indexed: 12/16/2022]
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38
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Grossman AN, Opie LH, Beshansky JR, Ingwall JS, Rackley CE, Selker HP. Glucose-insulin-potassium revived: current status in acute coronary syndromes and the energy-depleted heart. Circulation 2013; 127:1040-8. [PMID: 23459576 DOI: 10.1161/circulationaha.112.130625] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Kalra BS, Roy V. Efficacy of Metabolic Modulators in Ischemic Heart Disease: An Overview. J Clin Pharmacol 2013; 52:292-305. [DOI: 10.1177/0091270010396042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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40
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van den Brom CE, Bulte CS, Loer SA, Bouwman RA, Boer C. Diabetes, perioperative ischaemia and volatile anaesthetics: consequences of derangements in myocardial substrate metabolism. Cardiovasc Diabetol 2013; 12:42. [PMID: 23452502 PMCID: PMC3599199 DOI: 10.1186/1475-2840-12-42] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Accepted: 02/21/2013] [Indexed: 12/18/2022] Open
Abstract
Volatile anaesthetics exert protective effects on the heart against perioperative ischaemic injury. However, there is growing evidence that these cardioprotective properties are reduced in case of type 2 diabetes mellitus. A strong predictor of postoperative cardiac function is myocardial substrate metabolism. In the type 2 diabetic heart, substrate metabolism is shifted from glucose utilisation to fatty acid oxidation, resulting in metabolic inflexibility and cardiac dysfunction. The ischaemic heart also loses its metabolic flexibility and can switch to glucose or fatty acid oxidation as its preferential state, which may deteriorate cardiac function even further in case of type 2 diabetes mellitus.Recent experimental studies suggest that the cardioprotective properties of volatile anaesthetics partly rely on changing myocardial substrate metabolism. Interventions that target at restoration of metabolic derangements, like lifestyle and pharmacological interventions, may therefore be an interesting candidate to reduce perioperative complications. This review will focus on the current knowledge regarding myocardial substrate metabolism during volatile anaesthesia in the obese and type 2 diabetic heart during perioperative ischaemia.
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Affiliation(s)
- Charissa E van den Brom
- Department of Anesthesiology, Experimental Laboratory for VItal Signs, VU University Medical Center, De Boelelaan 1117, Amsterdam, the Netherlands.
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41
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Vivas D, Bernardo E, Palacios-Rubio J, Fernández-Ortiz A. How to Manage Hyperglycemia in an Acute Coronary Syndrome Patient. CURRENT TREATMENT OPTIONS IN CARDIOVASCULAR MEDICINE 2013; 15:93-103. [DOI: 10.1007/s11936-012-0215-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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42
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Ray U, Khan GA, Chakraborty K, Basuroy S, Patra SC, Girish G, Bhattacharya G, Sinha AK. Isolation and study of insulin activated nitric oxide synthase inhibitory protein in acute myocardial infarction subjects. J Thromb Thrombolysis 2012; 33:218-29. [PMID: 22238031 DOI: 10.1007/s11239-011-0672-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Insulin inhibits platelet aggregation through nitric oxide synthesis by stimulating platelet insulin activated nitric oxide synthase. Impaired platelet insulin activated nitric oxide synthase in acute myocardial infarction (AMI) patients had been reported and thus our aim was to identify and isolate the factors impairing insulin activated nitric oxide in acute myocardial infarction patients' plasma and study its effect on platelets aggregation in vitro. The insulin activated nitric oxide synthase inhibitor was identified as a protein and was purified from the plasma of AMI subjects using DEAE cellulose and Sephadex G-50 column, molecular weight determined by SDS-PAGE, nitric oxide quantified by methaemoglobin method, inhibitor protein quantified in plasma by immunoblot and ELISA, platelet aggregation studies done using an aggregometer, thromboxane-A2 in the platelets determined by radioimmunoassay, (125)I-insulin radioligand binding studies done using normal subject platelets. The purified nitric oxide synthase inhibitor protein was ~66 kDa, concentration in AMI subjects' plasma varied from 114 to 9,090 μM and was undetected in normal subjects' plasma. The inhibitor protein competes with insulin for insulin receptor binding sites. The Incubation of the normal subject PRP with 5.0 μM inhibitor for 30 min followed by 0.4 μM ADP addition caused platelet aggregation in vitro, 130 μM aspirin or 400 μU insulin/ml addition was able to abrogate 0.4 μM ADP induced platelet aggregation even in the presence of 5.0 μM inhibitor. A potent inhibitory protein against insulin activated nitric oxide synthase in platelets appears in circulation of AMI subjects impairing nitric oxide production, potentiating ADP induced platelet aggregation and increasing the thromboxane-A2 level in platelets.
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Affiliation(s)
- Udayan Ray
- Department of Pathology, Royal Hobart Hospital, G.P.O.BOX 1061L, Hobart, TAS 7001, Australia.
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Suranadi IW, Demaison L, Chaté V, Peltier S, Richardson M, Leverve X. An increase in the redox state during reperfusion contributes to the cardioprotective effect of GIK solution. J Appl Physiol (1985) 2012; 113:775-84. [PMID: 22797310 DOI: 10.1152/japplphysiol.01153.2011] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
This study aimed at determining whether glucose-insulin-potassium (GIK) solutions modify the NADH/NAD(+) ratio during postischemic reperfusion and whether their cardioprotective effect can be attributed to this change in part through reduction of the mitochondrial reactive oxygen species (ROS) production. The hearts of 72 rats were perfused with a buffer containing glucose (5.5 mM) and hexanoate (0.5 mM). They were maintained in normoxia for 30 min and then subjected to low-flow ischemia (0.5% of the preischemic coronary flow for 20 min) followed by reperfusion (45 min). From the beginning of ischemia, the perfusate was subjected to various changes: enrichment with GIK solution, enrichment with lactate (2 mM), enrichment with pyruvate (2 mM), enrichment with pyruvate (2 mM) plus ethanol (2 mM), or no change for the control group. Left ventricular developed pressure, heart rate, coronary flow, and oxygen consumption were monitored throughout. The lactate/pyruvate ratio of the coronary effluent, known to reflect the cytosolic NADH/NAD(+) ratio and the fructose-6-phosphate/dihydroxyacetone-phosphate (F6P/DHAP) ratio of the reperfused myocardium, were evaluated. Mitochondrial ROS production was also estimated. The GIK solution improved the recovery of mechanical function during reperfusion. This was associated with an enhanced cytosolic NADH/NAD(+) ratio and reduced mitochondrial ROS production. The cardioprotection was also observed when the hearts were perfused with fluids known to increase the cytosolic NADH/NAD(+) ratio (lactate, pyruvate plus ethanol) compared with the other fluids (control and pyruvate groups). The hearts with a high mechanical recovery also displayed a low F6P/DHAP ratio, suggesting that an accelerated glycolysis rate may be responsible for increased cytosolic NADH production. In conclusion, the cardioprotection induced by GIK solutions could occur through an increase in the cytosolic NADH/NAD(+) ratio, leading to a decrease in mitochondrial ROS production.
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Affiliation(s)
- I W Suranadi
- Faculty of Medicine, Udayana University, Denpasar, Bali, Indonesia
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44
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Hirsch IB, O'Brien KD. How to best manage glycemia and non-glycemia during the time of acute myocardial infarction. Diabetes Technol Ther 2012; 14 Suppl 1:S22-32. [PMID: 22650221 PMCID: PMC3388496 DOI: 10.1089/dia.2012.0095] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Acute myocardial infarction (AMI) is common in patients with diabetes. Reasons for this are multifactorial, but all relate to a variety of maladaptive responses to acute hyperglycemia. Persistent hyperglycemia is associated with worse left ventricular function and higher mortality during AMI, but intervention data are far from clear. Although there is a theoretical basis for the use of glucose-insulin-potassium infusion during AMI, lack of outcome efficacy (and inability to reach glycemic targets) in recent randomized trials has resulted in little enthusiasm for this strategy. Based on the increasing understanding of the dangers of hypoglycemia, while at the same time appreciating the role of hyperglycemia in AMI patients, goal glucose levels of 140-180 mg/dL using an intravenous insulin infusion while not eating seem reasonable for most patients and hospital systems. Non-glycemic therapy for patients with diabetes and AMI has benefited from more conclusive data, as this population has greater morbidity and mortality than those without diabetes. For ST-elevation myocardial infarction (STEMI), reperfusion therapy with primary percutaneous coronary intervention or fibrinolysis, antithrombotic therapy to prevent acute stent thrombosis following percutaneous coronary intervention or rethrombosis following thrombolysis, and initiation of β-blocker therapy are the current standard of care. Emergency coronary artery bypass graft surgery is reserved for the most critically ill. For those with non-STEMI, initial reperfusion therapy or fibrinolysis is not routinely indicated. Overall, there have been dramatic advances for the treatment of people with AMI and diabetes. The use of continuous glucose monitoring in this population may allow better ability to safely reach glycemic targets, which it is hoped will improve glycemic control.
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Affiliation(s)
- Irl B Hirsch
- Division of Metabolism, University of Washington School of Medicine, Seattle, Washington, USA.
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Selker HP, Beshansky JR, Sheehan PR, Massaro JM, Griffith JL, D'Agostino RB, Ruthazer R, Atkins JM, Sayah AJ, Levy MK, Richards ME, Aufderheide TP, Braude DA, Pirrallo RG, Doyle DD, Frascone RJ, Kosiak DJ, Leaming JM, Van Gelder CM, Walter GP, Wayne MA, Woolard RH, Opie LH, Rackley CE, Apstein CS, Udelson JE. Out-of-hospital administration of intravenous glucose-insulin-potassium in patients with suspected acute coronary syndromes: the IMMEDIATE randomized controlled trial. JAMA 2012; 307:1925-33. [PMID: 22452807 PMCID: PMC4167391 DOI: 10.1001/jama.2012.426] [Citation(s) in RCA: 163] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
CONTEXT Laboratory studies suggest that in the setting of cardiac ischemia, immediate intravenous glucose-insulin-potassium (GIK) reduces ischemia-related arrhythmias and myocardial injury. Clinical trials have not consistently shown these benefits, possibly due to delayed administration. OBJECTIVE To test out-of hospital emergency medical service (EMS) administration of GIK in the first hours of suspected acute coronary syndromes (ACS). DESIGN, SETTING, AND PARTICIPANTS Randomized, placebo-controlled, double-blind effectiveness trial in 13 US cities (36 EMS agencies), from December 2006 through July 31, 2011, in which paramedics, aided by electrocardiograph (ECG)-based decision support, randomized 911 (871 enrolled) patients (mean age, 63.6 years; 71.0% men) with high probability of ACS. INTERVENTION Intravenous GIK solution (n = 411) or identical-appearing 5% glucose placebo (n = 460) administered by paramedics in the out-of-hospital setting and continued for 12 hours. MAIN OUTCOME MEASURES The prespecified primary end point was progression of ACS to myocardial infarction (MI) within 24 hours, as assessed by biomarkers and ECG evidence. Prespecified secondary end points included survival at 30 days and a composite of prehospital or in-hospital cardiac arrest or in-hospital mortality, analyzed by intent-to-treat and by presentation with ST-segment elevation. RESULTS There was no significant difference in the rate of progression to MI among patients who received GIK (n = 200; 48.7%) vs those who received placebo (n = 242; 52.6%) (odds ratio [OR], 0.88; 95% CI, 0.66-1.13; P = .28). Thirty-day mortality was 4.4% with GIK vs 6.1% with placebo (hazard ratio [HR], 0.72; 95% CI, 0.40-1.29; P = .27). The composite of cardiac arrest or in-hospital mortality occurred in 4.4% with GIK vs 8.7% with placebo (OR, 0.48; 95% CI, 0.27-0.85; P = .01). Among patients with ST-segment elevation (163 with GIK and 194 with placebo), progression to MI was 85.3% with GIK vs 88.7% with placebo (OR, 0.74; 95% CI, 0.40-1.38; P = .34); 30-day mortality was 4.9% with GIK vs 7.7% with placebo (HR, 0.63; 95% CI, 0.27-1.49; P = .29). The composite outcome of cardiac arrest or in-hospital mortality was 6.1% with GIK vs 14.4% with placebo (OR, 0.39; 95% CI, 0.18-0.82; P = .01). Serious adverse events occurred in 6.8% (n = 28) with GIK vs 8.9% (n = 41) with placebo (P = .26). CONCLUSIONS Among patients with suspected ACS, out-of-hospital administration of intravenous GIK, compared with glucose placebo, did not reduce progression to MI. Compared with placebo, GIK administration was not associated with improvement in 30-day survival but was associated with lower rates of the composite outcome of cardiac arrest or in-hospital mortality. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT00091507.
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Affiliation(s)
- Harry P Selker
- Institute for Clinical Research and Health Policy Studies, Tufts Medical Center and Tufts University School of Medicine, Boston, Massachusetts 02111, USA.
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Selker HP, Beshansky JR, Griffith JL, D'Agostino RB, Massaro JM, Udelson JE, Rashba EJ, Ruthazer R, Sheehan PR, Desvigne-Nickens P, Rosenberg YD, Atkins JM, Sayah AJ, Aufderheide TP, Rackley CE, Opie LH, Lambrew CT, Cobb LA, Macleod BA, Ingwall JS, Zalenski RJ, Apstein CS. Study design for the Immediate Myocardial Metabolic Enhancement During Initial Assessment and Treatment in Emergency Care (IMMEDIATE) Trial: A double-blind randomized controlled trial of intravenous glucose, insulin, and potassium for acute coronary syndromes in emergency medical services. Am Heart J 2012; 163:315-22. [PMID: 22424000 DOI: 10.1016/j.ahj.2012.02.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2011] [Accepted: 02/02/2012] [Indexed: 01/04/2023]
Abstract
BACKGROUND Experimental studies suggest that metabolic myocardial support by intravenous (IV) glucose, insulin, and potassium (GIK) reduces ischemia-induced arrhythmias, cardiac arrest, mortality, progression from unstable angina pectoris to acute myocardial infarction (AMI), and myocardial infarction size. However, trials of hospital administration of IV GIK to patients with ST-elevation myocardial infarction (STEMI) have generally not shown favorable effects possibly because of the GIK intervention taking place many hours after ischemic symptom onset. A trial of GIK used in the very first hours of ischemia has been needed, consistent with the timing of benefit seen in experimental studies. OBJECTIVE The IMMEDIATE Trial tested whether, if given very early, GIK could have the impact seen in experimental studies. Accordingly, distinct from prior trials, IMMEDIATE tested the impact of GIK (1) in patients with acute coronary syndromes (ACS), rather than only AMI or STEMI, and (2) administered in prehospital emergency medical service settings, rather than later, in hospitals, after emergency department evaluation. DESIGN The IMMEDIATE Trial was an emergency medical service-based randomized placebo-controlled clinical effectiveness trial conducted in 13 cities across the United States that enrolled 911 participants. Eligible were patients 30 years or older for whom a paramedic performed a 12-lead electrocardiogram to evaluate chest pain or other symptoms suggestive of ACS for whom electrocardiograph-based acute cardiac ischemia time-insensitive predictive instrument indicated a ≥75% probability of ACS, and/or the thrombolytic predictive instrument indicated the presence of a STEMI, or if local criteria for STEMI notification of receiving hospitals were met. Prehospital IV GIK or placebo was started immediately. Prespecified were the primary end point of progression of ACS to infarction and, as major secondary end points, the composite of cardiac arrest or in-hospital mortality, 30-day mortality, and the composite of cardiac arrest, 30-day mortality, or hospitalization for heart failure. Analyses were planned on an intent-to-treat basis, on a modified intent-to-treat group who were confirmed in emergency departments to have ACS, and for participants presenting with STEMI. CONCLUSION The IMMEDIATE Trial tested whether GIK, when administered as early as possible in the course of ACS by paramedics using acute cardiac ischemia time-insensitive predictive instrument and thrombolytic predictive instrument decision support, would reduce progression to AMI, mortality, cardiac arrest, and heart failure. It also tested whether it would provide clinical and pathophysiologic information on GIK's biological mechanisms.
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Affiliation(s)
- Harry P Selker
- Center for Cardiovascular Health Services Research, Institute for Clinical Research and Health Policy Studies, Tufts Medical Center, Tufts University School of Medicine, Boston, MA 02111, USA.
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Scholte M, Timmers L, Bernink FJ, Denham RN, Beek AM, Kamp O, Diamant M, Horrevoets AJ, Niessen HW, Chen WJ, van Rossum AC, van Royen N, Doevendans PA, Appelman Y. Effect of additional treatment with EXenatide in patients with an Acute Myocardial Infarction (EXAMI): study protocol for a randomized controlled trial. Trials 2011; 12:240. [PMID: 22067476 PMCID: PMC3235971 DOI: 10.1186/1745-6215-12-240] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2011] [Accepted: 11/08/2011] [Indexed: 01/04/2023] Open
Abstract
Background Myocardial infarction causes irreversible loss of cardiomyocytes and may lead to loss of ventricular function, morbidity and mortality. Infarct size is a major prognostic factor and reduction of infarct size has therefore been an important objective of strategies to improve outcomes. In experimental studies, glucagon-like peptide 1 and exenatide, a long acting glucagon-like peptide 1 receptor agonist, a novel drug introduced for the treatment of type 2 diabetes, reduced infarct size after myocardial infarction by activating pro-survival pathways and by increasing metabolic efficiency. Methods The EXAMI trial is a multi-center, prospective, randomized, placebo controlled trial, designed to evaluate clinical outcome of exenatide infusion on top of standard treatment, in patients with an acute myocardial infarction, successfully treated with primary percutaneous coronary intervention. A total of 108 patients will be randomized to exenatide (5 μg bolus in 30 minutes followed by continuous infusion of 20 μg/24 h for 72 h) or placebo treatment. The primary end point of the study is myocardial infarct size (measured using magnetic resonance imaging with delayed enhancement at 4 months) as a percentage of the area at risk (measured using T2 weighted images at 3-7 days). Discussion If the current study demonstrates cardioprotective effects, exenatide may constitute a novel therapeutic option to reduce infarct size and preserve cardiac function in adjunction to reperfusion therapy in patients with acute myocardial infarction. Trial registration ClinicalTrials.gov: NCT01254123
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Affiliation(s)
- Martijn Scholte
- Department of Cardiology, VU University Medical Center, De Boelelaan 11171081 HV Amsterdam, The Netherlands
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Pioglitazone attenuates acute cocaine toxicity in rat isolated heart: potential protection by metabolic modulation. Anesthesiology 2011; 114:1389-95. [PMID: 21487283 DOI: 10.1097/aln.0b013e318218a7f6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
BACKGROUND The authors tested whether cocaine depresses mitochondrial acylcarnitine exchange and if a drug that enhances glucose metabolism could protect against cocaine-induced cardiac dysfunction. METHODS Oxygen consumption with and without cocaine was compared in rat cardiac mitochondria using octanoylcarnitine (lipid) or pyruvate (nonlipid) substrates. Isolated hearts from rats with or without a pioglitazone-supplemented diet were exposed to cocaine. RESULTS The 0.5 mM cocaine inhibited respiration supported by octanoylcarnitine (82 ± 10.4 and 45.7 ± 4.24 ngatomO min⁻¹ · mg⁻¹ · protein ± SEM, for control and cocaine treatment, respectively; P < 0.02) but not pyruvate-supported respiration (281 ± 12.5 and 267 ± 12.7 ngatomO min⁻¹ · mg⁻¹ · protein ± SEM; P = 0.45). Cocaine altered contractility, lusitropy, coronary resistance, and lactate production in isolated heart. These effects were each blunted in pioglitazone-treated hearts. The pioglitazone diet attenuated the drop in the rate-pressure product (P = 0.002), cocaine-induced diastolic dysfunction (P = 0.04), and myocardial vascular resistance (P = 0.05) compared with that of controls. Lactate production was higher in pretreated hearts (P = 0.008) and in ventricular myocytes cultured with pioglitazone (P = 0.0001). CONCLUSIONS Cocaine inhibited octanoylcarnitine-supported mitochondrial respiration. A pioglitazone diet significantly attenuated the effects of cocaine on isolated heart. The authors postulate that inhibition of acylcarnitine exchange could contribute to cocaine-induced cardiac dysfunction and that metabolic modulation warrants additional study.
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Klein LJ, Visser FC. The effect of insulin on the heart: Part 2: Effects on function during and post myocardial ischaemia. Neth Heart J 2011; 18:255-9. [PMID: 20505799 DOI: 10.1007/bf03091772] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Insulin infusion has been advocated in the treatment of myocardial ischaemia and myocardial infarction. There is evidence from experimental animal studies for a protective effect of high-dose insulin administration in myocardial ischaemia and myocardial infarction. In some relatively small study populations a reduction in mortality was reported in those patients who received glucose-insulin-potassium (GIK) during myocardial infarction, which was confirmed in two meta-analyses. However, it has not been possible to reproduce these positive results in large randomised clinical trials. (Neth Heart J 2010;18:255-9.).
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Affiliation(s)
- L J Klein
- Department of Cardiology, VU Medical Centre, Amsterdam, the Netherlands
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Li Y, Zhang L, Zhang L, Zhang H, Zhang N, Yang Z, Gao M, Yang X, Cui L. High-dose glucose-insulin-potassium has hemodynamic benefits and can improve cardiac remodeling in acute myocardial infarction treated with primary percutaneous coronary intervention: From a randomized controlled study. J Cardiovasc Dis Res 2011; 1:104-9. [PMID: 21187862 PMCID: PMC2982196 DOI: 10.4103/0975-3583.70899] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Objective: To evaluate the effects of high-dose glucose–insulin–potassium (GIK) solution on hemodynamics and cardiac remodeling in patients with acute myocardial infarction (AMI) treated with primary percutaneous coronary intervention (PCI). Patients and Methods: We observed the changes in the hemodynamic parameters in 26 patients with AMI. All patients received primary PCI before entering the study. All patients in the study were randomized into the GIK group (n = 14) or the control group (n = 12). Patients in the GIK group received high-dose GIK solution (25% glucose, 80 mmol/L KCl and 50 IU/L insulin; 1.5 ml/kg/h) over 24 h. Patients in the control group received standard therapy. We monitored the hemodynamic parameters at baseline and after 6 h, 12 h, 18 h and 24 h, respectively. Then, we followed-up the cardiac function with echocardiography after 7 days, 1 month and 6 months. Results: The basic clinical data was similar between the groups. Primary PCI was performed successfully in 25 patients. The two groups were indistinguishable in all factors measured. GIK solution did not have a deleterious effect on the hemodynamic parameters. The pulmonary capillary wedge pressure increased during the first 12-h period and then decreased smoothly (F = 3.75, P = 0.02). The trends were similar between the two groups. The system vascular resistance index (SVRI) and pulmonary vascular resistance index (PVRI) decreased during the first 12 h in the GIK group but increased in the control group. The GIK solution significantly influenced SVRI (F = 4.71, P = 0.02). GIK solution improved the cardiac function measured by stroke volume (F = 4.11, P = 0.03) and cardiac index (F = 4.40, P = 0.02). In the 6-month follow-up, GIK improved cardiac remodeling (left ventricular diastolic diameter: 49.2 ± 2.89 vs. 53.9 ± 2.48, P < 0.001; left ventricular systolic diameter: 32.9 ± 2.24 vs. 35.9 ± 2.78, P < 0.01). Conclusion: High-dose GIK solution had no adverse effects on the hemodynamics in AMI patients treated with primary PCI. It can improve cardiac function by lowering SVRI. In the 6-month follow-up, it improved cardiac remodeling.
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Affiliation(s)
- Yanhui Li
- Heart Center, Beijing Chaoyang Hospital and Institute of Cardiovascular Disease, Capital Medical University, Beijing - 100020, P. R. China
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