1
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Hinton A, Katti P, Mungai M, Hall DD, Koval O, Shao J, Vue Z, Lopez EG, Rostami R, Neikirk K, Ponce J, Streeter J, Schickling B, Bacevac S, Grueter C, Marshall A, Beasley HK, Do Koo Y, Bodine SC, Nava NGR, Quintana AM, Song LS, Grumbach IM, Pereira RO, Glancy B, Abel ED. ATF4-dependent increase in mitochondrial-endoplasmic reticulum tethering following OPA1 deletion in skeletal muscle. J Cell Physiol 2024; 239:e31204. [PMID: 38419397 DOI: 10.1002/jcp.31204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Revised: 12/15/2023] [Accepted: 01/16/2024] [Indexed: 03/02/2024]
Abstract
Mitochondria and endoplasmic reticulum (ER) contact sites (MERCs) are protein- and lipid-enriched hubs that mediate interorganellar communication by contributing to the dynamic transfer of Ca2+, lipid, and other metabolites between these organelles. Defective MERCs are associated with cellular oxidative stress, neurodegenerative disease, and cardiac and skeletal muscle pathology via mechanisms that are poorly understood. We previously demonstrated that skeletal muscle-specific knockdown (KD) of the mitochondrial fusion mediator optic atrophy 1 (OPA1) induced ER stress and correlated with an induction of Mitofusin-2, a known MERC protein. In the present study, we tested the hypothesis that Opa1 downregulation in skeletal muscle cells alters MERC formation by evaluating multiple myocyte systems, including from mice and Drosophila, and in primary myotubes. Our results revealed that OPA1 deficiency induced tighter and more frequent MERCs in concert with a greater abundance of MERC proteins involved in calcium exchange. Additionally, loss of OPA1 increased the expression of activating transcription factor 4 (ATF4), an integrated stress response (ISR) pathway effector. Reducing Atf4 expression prevented the OPA1-loss-induced tightening of MERC structures. OPA1 reduction was associated with decreased mitochondrial and sarcoplasmic reticulum, a specialized form of ER, calcium, which was reversed following ATF4 repression. These data suggest that mitochondrial stress, induced by OPA1 deficiency, regulates skeletal muscle MERC formation in an ATF4-dependent manner.
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Affiliation(s)
- Antentor Hinton
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Prasanna Katti
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Margaret Mungai
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Duane D Hall
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Olha Koval
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Jianqiang Shao
- Central Microscopy Research Facility, Iowa City, Iowa, USA
| | - Zer Vue
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Edgar Garza Lopez
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
| | - Rahmati Rostami
- Department of Genetic Medicine, Joan & Sanford I. Weill Medical College of Cornell University, New York, New York, USA
| | - Kit Neikirk
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Jessica Ponce
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Jennifer Streeter
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Brandon Schickling
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Department of Medicine, Duke University, Durham, North Carolina, USA
| | - Serif Bacevac
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Chad Grueter
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Andrea Marshall
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Heather K Beasley
- Department of Molecular Physiology and Biophysics, Vanderbilt University, Nashville, Tennessee, USA
| | - Young Do Koo
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Sue C Bodine
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
- Oklahoma Medical Research Foundation, Oklahoma City, Oklahoma, USA
| | - Nayeli G Reyes Nava
- Department of Biological Sciences, Border Biomedical Research Center, The University of Texas at El Paso, El Paso, Texas, USA
| | - Anita M Quintana
- Department of Biological Sciences, Border Biomedical Research Center, The University of Texas at El Paso, El Paso, Texas, USA
| | - Long-Sheng Song
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Isabella M Grumbach
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Renata O Pereira
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
| | - Brian Glancy
- National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
- National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, Maryland, USA
| | - E Dale Abel
- Department of Internal Medicine, Division of Endocrinology and Metabolism, Carver College of Medicine, University of Iowa, Iowa City, Iowa, USA
- Fraternal Order of Eagles Diabetes Research Center, Iowa City, Iowa, USA
- Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
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McLendon JM, zhang X, Matasic D, Kumar M, Koval O, Grumbach IM, Sadayappan S, London B, Boudreau RL. Abstract P2010: Cardiomyocyte Knockout Of Sorbs2 Rewires Cytoskeleton And Causes Dilated Cardiomyopathy. Circ Res 2022. [DOI: 10.1161/res.131.suppl_1.p2010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Sorbs2 is a cardiomyocyte-enriched, cytoskeletal adaptor protein and there is growing interest in understanding its roles in cardiac biology and disease. While Sorbs2 global knockout mice display lethal cardiomyopathy with severe arrhythmias, the underlying mechanisms remain unclear, and if this results from intrinsic loss of Sorbs2 in cardiomyocytes (CM) is unknown, as Sorbs2 is also well-expressed in the nervous system and vasculature. Thus, the potential relevance of Sorbs2 in human cardiomyopathy is underexplored. We aim to characterize the effects and potential mechanisms of CM-specific deletion of Sorbs2 on cardiac structure and function in mice, and to further examine Sorbs2 dysregulation in failing hearts and explore potential links between Sorbs2 genetic variations and human cardiovascular disease phenotypes. We report that heart Sorbs2 expression is consistently upregulated in humans with ischemic and idiopathic cardiomyopathies, and in animal models of heart failure (HF). We generated mice with CM-specific loss of Sorbs2 (Sorbs2-cKO) and found early atrial and ventricular conduction anomalies, despite unaltered expression of primary action potential ion channels and gap junction proteins. At mid-life, Sorbs2-cKO mice exhibit impaired cardiac contractility with cardiomyofibers failing to maintain adequate mechanical tension. These mice develop progressive diastolic and systolic dysfunction, enlarged cardiac chambers, and die with congestive HF at ~1 year of age. Comprehensive survey of potential underlying mechanisms show that Sorbs2-cKO hearts have defective microtubule polymerization and compensatory upregulation of desmin, vinculin, and tubulins. Finally, consistent with our mouse observations, we identified suggestive links between Sorbs2 genetic variants and human cardiac phenotypes, including conduction abnormalities, atrial enlargement, and dilated cardiomyopathy. In conclusion, our studies show that Sorbs2 is essential for maintaining cytoskeletal structural integrity in CM, likely through strengthening the interactions between microtubules and other structural proteins at crosslink sites, and highlights its potential clinical relevance to cardiomyopathy.
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3
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Zhu Z, Gao Z, Chen B, Hall DD, Minerath R, Koval O, Sierra A, Subbotina E, Zhu X, Kim YR, Yang J, Grumbach I, Irani K, Grueter C, Song LS, Hodgson-Zingman DM, Zingman LV. Atrial-paced, exercise-similar heart rate envelope induces myocardial protection from ischaemic injury. Europace 2022; 24:1025-1035. [PMID: 34792112 PMCID: PMC9282913 DOI: 10.1093/europace/euab273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Accepted: 10/19/2021] [Indexed: 11/14/2022] Open
Abstract
AIMS The study investigates the role and mechanisms of clinically translatable exercise heart rate (HR) envelope effects, without dyssynchrony, on myocardial ischaemia tolerance compared to standard preconditioning methods. Since the magnitude and duration of exercise HR acceleration are tightly correlated with beneficial cardiac outcomes, it is hypothesized that a paced exercise-similar HR envelope, delivered in a maximally physiologic way that avoids the toxic effects of chamber dyssynchrony, may be more than simply a readout, but rather also a significant trigger of myocardial conditioning and stress resistance. METHODS AND RESULTS For 8 days over 2 weeks, sedated mice were atrial-paced once daily via an oesophageal electrode to deliver an exercise-similar HR pattern with preserved atrioventricular and interventricular synchrony. Effects on cardiac calcium handling, protein expression/modification, and tolerance to ischaemia-reperfusion (IR) injury were assessed and compared to those in sham-paced mice and to the effects of exercise and ischaemic preconditioning (IPC). The paced cohort displayed improved myocardial IR injury tolerance vs. sham controls with an effect size similar to that afforded by treadmill exercise or IPC. Hearts from paced mice displayed changes in Ca2+ handling, coupled with changes in phosphorylation of calcium/calmodulin protein kinase II, phospholamban and ryanodine receptor channel, and transcriptional remodelling associated with a cardioprotective paradigm. CONCLUSIONS The HR pattern of exercise, delivered by atrial pacing that preserves intracardiac synchrony, induces cardiac conditioning and enhances ischaemic stress resistance. This identifies the HR pattern as a signal for conditioning and suggests the potential to repurpose atrial pacing for cardioprotection.
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Affiliation(s)
- Zhiyong Zhu
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
- Department of Medicine, Veterans Affairs Medical Center, 601 Hwy 6 West, Iowa City, IA 52246, USA
| | - Zhan Gao
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Biyi Chen
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Duane D Hall
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Rachel Minerath
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Olha Koval
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Ana Sierra
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Ekaterina Subbotina
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Xiaoyi Zhu
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Young Rae Kim
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Jun Yang
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Isabella Grumbach
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Kaikobad Irani
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Chad Grueter
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Long Sheng Song
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Denice M Hodgson-Zingman
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
| | - Leonid V Zingman
- Department of Medicine, University of Iowa, 200 Hawkins Drive, CBRB 2270B, Iowa City, IA 52242, USA
- Department of Medicine, Veterans Affairs Medical Center, 601 Hwy 6 West, Iowa City, IA 52246, USA
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Ait-Aissa K, Koval O, Lindsey NR, Broadhurst K, Grumbach IM. Abstract 119: Mitochondrial Redox Mechanisms Leading To Sustained Radiation-induced Endothelial Injury. Arterioscler Thromb Vasc Biol 2021. [DOI: 10.1161/atvb.41.suppl_1.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Rationale:
Radiation therapy strongly increases the risk of developing atherosclerotic vascular disease, such as coronary and carotid artery disease. Recently, we found that
in vitro
inhibition of the mitochondrial Ca
2+
uniporter (MCU) protects from endothelial barrier breakdown following irradiation.
Objective:
To determine the mechanisms by which irradiation initiates vascular wall injury and test potential mitigators.
Methods and Results:
At 24 and 240 h After head and neck irradiation with 12 Gy x-ray, decreased endothelium-dependent vasodilation was seen in carotid arteries of C57Bl/6 mice. This was prevented by pre-infusion of the mitochondrial superoxide scavenger mitoTEMPO. Altered dilation correlated with increased mitochondrial ROS, loss of NO production and mitochondrial, but not nuclear DNA damage in human coronary endothelial cells
in vitro.
Enhancing mitochondrial in contrast to nuclear base excision repair by overexpression of subcellular targeted 8-Oxoguanine glycosylase blocked mitochondrial ROS and maintained NO production at all time points. Similarly, treatment with pravastatin, knockdown of MCU or its pharmacologic inhibition blocked irradiation-induced mitochondrial DNA damage and excess oxidative stress while maintaining NO production. These findings were recapitulated in vivo in a transgenic model of endothelial MCU knockout and in mice pretreated with pravastatin at 24 and 240 h after irradiation. Irradiation hyperpolarized the mitochondrial membrane potential (αψ
mito
) and increased baseline matrix Ca
2+
levels ([Ca
2+
]
m
) as well as Ca
2+
transients. MCU knockdown decreased αψ
mito
,
[Ca
2+
]
m
and Ca
2+
transients as did mitoTEMPO, whereas pravastatin pretreatment hyperpolarized αψ
mito
despite lowering [Ca
2+
]
m
.
Conclusion:
These findings demonstrate that mitochondrial DNA damage after irradiation drives a feed-forward circuit with ROS production and is sufficient to maintain endothelial dysfunction. Irradiation hyperpolarizes αψ
mito
and blocking this or its sequela, increased [Ca
2+
]
m
, prevents irradiation-induced endothelial injury. These findings also suggest additional mechanisms of statins in mitochondria and MCU as a new approach to mitigate irradiation-induced vascular disease.
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5
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Koval O, Oliynichuk S, Lysak T. THE COMPARATIVE STUDY ON TWO COMMERCIAL STRAINS OF SACCHAROMYCES CEREVISIAE FOR ETHANOL PRODUCTION FROM HARD-TO-FERMENT SUGAR-CONTAINING RAW MATERIALS. FST 2021. [DOI: 10.15673/fst.v15i1.1960] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The growth of bioethanol production in Ukraine is practical for both environmental and economic reasons. To reduce the cost of bioethanol production from sugar-containing raw materials, in particular, sugar beet molasses, it is effective to use high gravity wort and osmotolerant yeasts strains. Due to long exposure to high temperatures during sugar production and because of changes in the composition during storage, molasses accumulates compounds that adversely affect the function of yeast cells. For this type of raw material, a yeast strain should be found that will not only withstand high concentrations of sugars or the finished product, but will also be more resistant to inhibitors. The use of two industrial yeast strains (Deltaferm® AL-18 and Y 5007 (K-7)) for fermentation of high gravity molasses wort has been considered. It has been determined that sugar beet molasses, which is hard-to-ferment, can be used to produce ethanol from high gravity wort if some corrective measures are taken, in particular, resistant producer strains are used. It has been found that the yeast Deltaferm® AL-18 has a longer lag phase and consumes 50–60% of carbohydrates from the medium by 24 hours later than the yeast strain Y 5007 (K-7) does. It has been established how the parameters of the wash change depending on what yeast strains ferment high gravity wort based on hard-to-ferment molasses. It has been found that when using high gravity wort obtained from low-quality molasses, the yeast strain of foreign selective breeding does not allow achieving the calculated alcohol content in the fermented wash. According to the research results, under the same fermentation conditions, the distiller’s yeast strain Y 5007 (K-7) is more effective in fermenting high gravity wort based on hard-to-ferment molasses. Unlike it is with dry yeast, the industrial use of this strain according to the classical two-stream fermentation scheme does not require additional investments.
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6
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Sokolenko A, Shevchenko O, Koval O, Vasylkivskyi K, Maksymenko I, Shevchenko A. Phase transitions in food production technologies. Ukr food j 2020. [DOI: 10.24263/2304-974x-2020-9-4-13] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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7
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Nguyen EK, Koval O, Grumbach I. Abstract 687: CaMKII in Mitochondria of Smooth Muscle Cells Controls Mitochondrial Mobility, Migration and Neointimal Hyperplasia. Arterioscler Thromb Vasc Biol 2018. [DOI: 10.1161/atvb.38.suppl_1.687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective:
To define the mechanisms by which mitochondria control VSMC migration and impact neointimal hyperplasia.
Approach and Results:
The multifunctional Ca
2+
/calmodulin-dependent kinase II (CaMKII) in the mitochondrial matrix of VSMC drove a feed-forward circuit with the mitochondrial Ca
2+
uniporter (MCU) to promote matrix Ca
2+
influx. MCU was necessary for the activation of mitochondrial CaMKII (mtCaMKII), whereas mtCaMKII phosphorylated MCU at the regulatory site S92 that promotes Ca
2+
entry. mtCaMKII was necessary and sufficient for PDGF-induced mitochondrial Ca
2+
uptake. This effect was dependent on MCU. mtCaMKII and MCU inhibition abrogated VSMC migration and mitochondrial translocation to the leading edge. Overexpression of WT MCU, but not MCU S92A mutant in MCU
-/-
VSMC rescued migration and mitochondrial mobility. The outer mitochondrial membrane GTPase Miro-1 promotes mitochondrial mobility, but arrests it in subcellular domains of high Ca
2+
concentrations. In Miro-1
-/-
VSMC, mitochondrial mobility and VSMC migration were abolished, overexpression of mtCaMKII nor a CaMKII inhibitory peptide in mitochondria (mtCaMKIIN) had no effect. Consistently, inhibition of mtCaMKII increased and prolonged cytosolic Ca
2+
transients. MtCaMKII inhibition diminished phosphorylation of focal adhesion kinase and myosin light chain, leading to reduced focal adhesion turnover and cytoskeletal remodeling. In a transgenic model of selective mitochondrial CaMKII inhibition in VSMC, neointimal hyperplasia was significantly reduced after vascular injury.
Conclusions:
These findings identify mitochondrial CaMKII as a key regulator of mitochondrial Ca
2+
uptake via MCU, thereby controlling mitochondrial translocation and VSMC migration following vascular injury.
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8
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Eikelboom JW, Kozek-Langenecker S, Exadaktylos A, Batorova A, Boda Z, Christory F, Gornik I, Kėkštas G, Kher A, Komadina R, Koval O, Mitic G, Novikova T, Pazvanska E, Ratobilska S, Sütt J, Winder A, Zateyshchikov D. Emergency care of patients receiving non-vitamin K antagonist oral anticoagulants. Br J Anaesth 2017; 120:645-656. [PMID: 29576106 DOI: 10.1016/j.bja.2017.11.082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 09/06/2017] [Accepted: 09/15/2017] [Indexed: 01/19/2023] Open
Abstract
Non-vitamin K antagonist oral anticoagulants (NOACs), which inhibit thrombin (dabigatran) and factor Xa (rivaroxaban, apixaban, edoxaban) have been introduced in several clinical indications. Although NOACs have a favourable benefit-risk profile and can be used without routine laboratory monitoring, they are associated-as any anticoagulant-with a risk of bleeding. In addition, treatment may need to be interrupted in patients who need surgery or other procedures. The objective of this article, developed by a multidisciplinary panel of experts in thrombosis and haemostasis, is to provide an update on the management of NOAC-treated patients who experience a bleeding episode or require an urgent procedure. Recent advances in the development of targeted reversal agents are expected to help streamline the management of NOAC-treated patients in whom rapid reversal of anticoagulation is required.
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Affiliation(s)
- J W Eikelboom
- Population Health Research Institute, McMaster University and Hamilton Health Sciences, Hamilton, ON, Canada.
| | - S Kozek-Langenecker
- Department of Anaesthesia and Intensive Care, Evangelical Hospital Vienna, Vienna, Austria
| | - A Exadaktylos
- Department of Emergency Medicine, Inselspital, Bern University Hospital, Bern, Switzerland
| | - A Batorova
- Department of Haematology and Transfusion Medicine, Faculty of Medicine of Comenius University, and University Hospital, Bratislava, Slovakia
| | - Z Boda
- Department of Internal Medicine, Thrombosis and Haemostasis Centre, University of Debrecen, Debrecen, Hungary
| | - F Christory
- Medical Education Global Solutions, Paris, France
| | - I Gornik
- Intensive Care Unit, Department of Medicine, University Hospital Centre Zagreb, Zagreb, Croatia; University of Zagreb School of Medicine, Zagreb, Croatia
| | - G Kėkštas
- Department of Anaesthesiology and Intensive Care, Vilnius University Hospital Santariškių Klinikos, Vilnius, Lithuania
| | - A Kher
- Laboratory of Biological Hematology, Hôtel-Dieu University Hospital, Paris, France
| | - R Komadina
- Department of Traumatology, General and Teaching Hospital Celje, Celje, Slovenia
| | - O Koval
- Department of Hospital Therapy No. 2, Dnipropetrovsk State Medical Academy, Dnipropetrovsk, Ukraine
| | - G Mitic
- Thrombosis and Haemostasis Unit, Centre of Laboratory Medicine, Clinical Centre of Vojvodina, and Faculty of Medicine, University of Novi Sad, Novi Sad, Serbia
| | - T Novikova
- Department of Cardiology, Northwestern Medical University I. I. Mechnikov, and Vascular Centre, Pokrovskaya City Hospital, Saint Petersburg, Russian Federation
| | - E Pazvanska
- Department Anaesthesia and Intensive Care, 4th City Hospital, Sofia, Bulgaria
| | - S Ratobilska
- Intensive Care Unit, Pauls Stradins Clinical University Hospital, Riga, Latvia
| | - J Sütt
- Anaesthesiology and Intensive Care Clinic, Tartu University Hospital, Tartu, Estonia
| | - A Winder
- Department of Hematology, Thrombosis and Hemostasis Unit, Wolfson Medical Center, Holon, Israel
| | - D Zateyshchikov
- Primary Vascular Department, City Clinical Hospital No. 51, Moscow, Russia
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9
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Koval O, Volkova O, Kulemzin S, Gorchakov A, Tkachenko A, Nushtaeva A, Kuligina E, Richter V, Taranin A. NK-cell based delivery of anticancer therapeutics. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx711.050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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10
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Koval O, Mokryk I, Mukvich O, Dubova G. PS263 Dependence on CHD Variant of Toxic Substances Content in Children Cardiovascular Tissue. Glob Heart 2016. [DOI: 10.1016/j.gheart.2016.03.202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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11
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Koval O, Mokryk I, Mukvich O, Dubova G. PM261 Age, Sex and Residence Features of Children With CHD and Different Toxic Substances Content in Cardiovascular Tissue. Glob Heart 2016. [DOI: 10.1016/j.gheart.2016.03.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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12
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Nguyen E, Koval O, Grumbach I. Abstract 374: Inhibition of Mitochondrial CaMKII Reduces Vascular Smooth Muscle Migration and Neointima Formation and Halts Mitochondrial Mobility. Arterioscler Thromb Vasc Biol 2016. [DOI: 10.1161/atvb.36.suppl_1.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Restenosis after angioplasty for coronary vascular disease remains a critical problem in cardiovascular medicine. Vascular smooth muscle cell (VSMC) migration and proliferation cause restenosis through neointima formation. Mitochondrial motility is likely necessary for cell proliferation and migration, and is inhibited in microdomains with increased Ca
2+
. The Ca
2+
/calmodulin-dependent kinase II (CaMKII) in mitochondria (mtCaMKII) is proposed to control mitochondrial matrix Ca
2+
uptake through mitochondrial Ca
2+
uniporter (MCU). Thus, we hypothesized that blocking mtCaMKII decreases VSMC migration and neointima formation by decreasing mitochondrial motility.
Methods:
mtCaMKII was inhibited by expression of the mitochondria-targeted CaMKII inhibitor peptide (CaMKIIN) in a novel transgenic mouse model in smooth muscle only (SM-mtCaMKIIN) or delivered by adenoviral transduction (Ad-mtCaMKIIN).
Results:
In our models, mtCaMKIIN was detected selectively in mitochondria of VSMC. mtCaMKIIN significantly reduced mitochondrial Ca
2+
current and Ca
2+
content compared to WT in vivo and in vitro. SM-mtCaMKIIN mice showed significantly reduced neointimal area 28 days after endothelial injury (n=8, p<0.05) and fewer proliferating neointimal cells by PCNA staining. In vitro, Ad-mtCaMKIIN mildly reduced VSMC proliferation and mitochondrial ROS production without altering maximal respiration after PDGF treatment. Ad-mtCaMKIIN abolished VSMC migration, as did mitoTEMPO and MCU inhibitor Ru360. Ad-mtCaMKIIN blocked mitochondrial mobility towards the leading edge, while relocation of mitochondria was seen in WT cells 6 h after PDGF treatment. Mitochondrial redistribution was also inhibited by Ru360, but not by mitoTEMPO or cytoplasmic CaMKII inhibition. Mitochondrial fission promotes cell migration. Accordingly, PDGF increased mitochondrial particles in WT VSMC, while mitochondria in Ad-mtCaMKIIN cells were fragmented and unresponsive to PDGF treatment.
Conclusions:
mtCaMKIIN prevents mitochondrial distribution to the leading edge and reduces VSMC migration and neointima formation. These data suggest mitochondrial Ca
2+
regulation plays an important role in VSMC migration by altering mitochondrial location.
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Affiliation(s)
| | - Olha Koval
- Internal Medicine, Univ of Iowa, Iowa City, IA
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13
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Winters CJ, Koval O, Murthy S, Allamargot C, Sebag SC, Paschke JD, Jaffer OA, Carter AB, Grumbach IM. CaMKII inhibition in type II pneumocytes protects from bleomycin-induced pulmonary fibrosis by preventing Ca2+-dependent apoptosis. Am J Physiol Lung Cell Mol Physiol 2015; 310:L86-94. [PMID: 26545899 DOI: 10.1152/ajplung.00132.2015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 10/22/2015] [Indexed: 01/25/2023] Open
Abstract
The calcium and calmodulin-dependent kinase II (CaMKII) translates increases in intracellular Ca(2+) into downstream signaling events. Its function in pulmonary pathologies remains largely unknown. CaMKII is a well-known mediator of apoptosis and regulator of endoplasmic reticulum (ER) Ca(2+). ER stress and apoptosis of type II pneumocytes lead to aberrant tissue repair and progressive collagen deposition in pulmonary fibrosis. Thus we hypothesized that CaMKII inhibition alleviates fibrosis in response to bleomycin by attenuating apoptosis and ER stress of type II pneumocytes. We first established that CaMKII was strongly expressed in the distal respiratory epithelium, in particular in surfactant protein-C-positive type II pneumocytes, and activated after bleomycin instillation. We generated a novel transgenic model of inducible expression of the CaMKII inhibitor peptide AC3-I limited to type II pneumocytes (Tg SPC-AC3-I). Tg SPC-AC3-I mice were protected from development of pulmonary fibrosis after bleomycin exposure compared with wild-type mice. CaMKII inhibition also provided protection from apoptosis in type II pneumocytes in vitro and in vivo. Moreover, intracellular Ca(2+) levels and ER stress were increased by bleomycin and significantly blunted with CaMKII inhibition in vitro. These data demonstrate that CaMKII inhibition prevents type II pneumocyte apoptosis and development of pulmonary fibrosis in response to bleomycin. CaMKII inhibition may therefore be a promising approach to prevent or ameliorate the progression of pulmonary fibrosis.
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Affiliation(s)
| | - Olha Koval
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa
| | - Shubha Murthy
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa
| | - Chantal Allamargot
- Central Microscopy Research Facility, University of Iowa, Iowa City, Iowa
| | - Sara C Sebag
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa
| | - John D Paschke
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa
| | - Omar A Jaffer
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa
| | - A Brent Carter
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa; Free Radical and Radiation Biology Graduate Program, University of Iowa, Iowa City, Iowa; Iowa City Veterans Affairs Healthcare System, Iowa City, Iowa; and Department of Medicine, University of Alabama at Birmingham, Birmingham, Alabama
| | - Isabella M Grumbach
- Department of Internal Medicine, University of Iowa, Iowa City, Iowa; Iowa City Veterans Affairs Healthcare System, Iowa City, Iowa; and
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14
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Koval O, Mokryk I, Nagorna N, Dubova G, Dudchak O, Volodyn V, Usenko N, Muzychyn O, Nechiporchuk A, Novak A. Toxic chemical element barium content in different biosubstrates of children with congenital heart diseases. J Cardiothorac Surg 2013. [PMCID: PMC3844540 DOI: 10.1186/1749-8090-8-s1-o140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
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15
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Koval O, Mokryk I, Nagorna N, Dubova G, Bordyugova O, Novack A, Pshenychnaya O, Klymanskiy R, Kartashova O, Konov V. Toxic substances in hearts of children with cardiovascular malformations. J Cardiothorac Surg 2013. [PMCID: PMC3844549 DOI: 10.1186/1749-8090-8-s1-o139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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16
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Mokryk I, Koval O, Novack A, Kartashova O, Muzychin O, Bordyugova O, Volodyn V, Nechyporchuk A, Klymanskiy R, Konov V. Cardiac surgical aspects of Down syndrome. J Cardiothorac Surg 2013. [PMCID: PMC3846104 DOI: 10.1186/1749-8090-8-s1-p96] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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17
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DeGrande S, Nixon D, Koval O, Curran JW, Wright P, Wang Q, Kashef F, Chiang D, Li N, Wehrens XHT, Anderson ME, Hund TJ, Mohler PJ. CaMKII inhibition rescues proarrhythmic phenotypes in the model of human ankyrin-B syndrome. Heart Rhythm 2012; 9:2034-41. [PMID: 23059182 DOI: 10.1016/j.hrthm.2012.08.026] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/04/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cardiovascular disease is a leading cause of death worldwide. Arrhythmias are associated with significant morbidity and mortality related to cardiovascular disease. Recent work illustrates that many cardiac arrhythmias are initiated by a pathologic imbalance between kinase and phosphatase activities in excitable cardiomyocytes. OBJECTIVE To test the relationship between myocyte kinase/phosphatase imbalance and cellular and whole animal arrhythmia phenotypes associated with ankyrin-B cardiac syndrome. METHODS By using a combination of biochemical, electrophysiological, and in vivo approaches, we tested the ability of calcium/calmodulin-dependent kinase (CaMKII) inhibition to rescue imbalance in kinase/phosphatase pathways associated with human ankyrin-B-associated cardiac arrhythmia. RESULTS The cardiac ryanodine receptor (RyR(2)), a validated target of kinase/phosphatase regulation in myocytes, displays abnormal CaMKII-dependent phosphorylation (pS2814 hyperphosphorylation) in ankyrin-B(+/-) heart. Notably, RyR(2) dysregulation is rescued in myocytes from ankyrin-B(+/-) mice overexpressing a potent CaMKII-inhibitory peptide (AC3I), and aberrant RyR(2) open probability observed in ankyrin-B(+/-) hearts is normalized by treatment with the CaMKII inhibitor KN-93. CaMKII inhibition is sufficient to rescue abnormalities in ankyrin-B(+/-) myocyte electrical dysfunction including cellular afterdepolarizations, and significantly blunts whole animal cardiac arrhythmias and sudden death in response to elevated sympathetic tone. CONCLUSIONS These findings illustrate the complexity of the molecular components involved in human arrhythmia and define regulatory elements of the ankyrin-B pathway in pathophysiology. Furthermore, the findings illustrate the potential impact of CaMKII inhibition in the treatment of a congenital form of human cardiac arrhythmia.
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Affiliation(s)
- Sean DeGrande
- Dorothy M. Davis Heart and Lung Research Institute, College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio 43210, USA
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18
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Cunha SR, Hund TJ, Hashemi S, Voigt N, Li N, Wright P, Koval O, Li J, Gudmundsson H, Gumina RJ, Karck M, Schott JJ, Probst V, Le Marec H, Anderson ME, Dobrev D, Wehrens XHT, Mohler PJ. Defects in ankyrin-based membrane protein targeting pathways underlie atrial fibrillation. Circulation 2011; 124:1212-22. [PMID: 21859974 DOI: 10.1161/circulationaha.111.023986] [Citation(s) in RCA: 82] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Atrial fibrillation (AF) is the most common cardiac arrhythmia, affecting >2 million patients in the United States alone. Despite decades of research, surprisingly little is known regarding the molecular pathways underlying the pathogenesis of AF. ANK2 encodes ankyrin-B, a multifunctional adapter molecule implicated in membrane targeting of ion channels, transporters, and signaling molecules in excitable cells. METHODS AND RESULTS In the present study, we report early-onset AF in patients harboring loss-of-function mutations in ANK2. In mice, we show that ankyrin-B deficiency results in atrial electrophysiological dysfunction and increased susceptibility to AF. Moreover, ankyrin-B(+/-) atrial myocytes display shortened action potentials, consistent with human AF. Ankyrin-B is expressed in atrial myocytes, and we demonstrate its requirement for the membrane targeting and function of a subgroup of voltage-gated Ca(2+) channels (Ca(v)1.3) responsible for low voltage-activated L-type Ca(2+) current. Ankyrin-B is associated directly with Ca(v)1.3, and this interaction is regulated by a short, highly conserved motif specific to Ca(v)1.3. Moreover, loss of ankyrin-B in atrial myocytes results in decreased Ca(v)1.3 expression, membrane localization, and function sufficient to produce shortened atrial action potentials and arrhythmias. Finally, we demonstrate reduced ankyrin-B expression in atrial samples of patients with documented AF, further supporting an association between ankyrin-B and AF. CONCLUSIONS These findings support that reduced ankyrin-B expression or mutations in ANK2 are associated with AF. Additionally, our data demonstrate a novel pathway for ankyrin-B-dependent regulation of Ca(v)1.3 channel membrane targeting and regulation in atrial myocytes.
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Affiliation(s)
- Shane R Cunha
- Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Medical Center, Columbus, 43210, USA
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19
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Li J, Marionneau C, Koval O, Zingman L, Mohler PJ, Nerbonne JM, Anderson ME. Calmodulin kinase II inhibition enhances ischemic preconditioning by augmenting ATP-sensitive K+ current. Channels (Austin) 2007; 1:387-94. [PMID: 18690039 DOI: 10.4161/chan.5449] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Mice with genetic inhibition (AC3-I) of the multifunctional Ca(2+)/calmodulin dependent protein kinase II (CaMKII) have improved cardiomyocyte survival after ischemia. Some K(+) currents are up-regulated in AC3-I hearts, but it is unknown if CaMKII inhibition increases the ATP sensitive K(+) current (I(KATP)) that underlies ischemic preconditioning (IP) and confers resistance to ischemia. We hypothesized increased I(KATP) was part of the mechanism for improved ventricular myocyte survival during ischemia in AC3-I mice. AC3-I hearts were protected against global ischemia due to enhanced IP compared to wild type (WT) and transgenic control (AC3-C) hearts. IKATP was significantly increased, while the negative regulatory dose-dependence of ATP was unchanged in AC3-I compared to WT and AC3-C ventricular myocytes, suggesting that CaMKII inhibition increased the number of functional I(KATP) channels available for IP. We measured increased sarcolemmal Kir6.2, a pore-forming I(KATP) subunit, but not a change in total Kir6.2 in cell lysates or single channel I(KATP) opening probability from AC3-I compared to WT and AC3-C ventricles, showing CaMKII inhibition increased sarcolemmal I(KATP) channel expression. There were no differences in mRNA for genes encoding I(KATP) channel subunits in AC3-I, WT and AC3-C ventricles. The I(KATP) opener pinacidil (100 microM) reduced MI area in WT to match AC3-I hearts, while the I(KATP) antagonist HMR1098 (30 microM) increased MI area to an equivalent level in all groups, indicating that increased I(KATP) and augmented IP are important for reduced ischemic cell death in AC3-I hearts. Our study results show CaMKII inhibition enhances beneficial effects of IP by increasing I(KATP).
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Affiliation(s)
- Jingdong Li
- Departments of Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242-1081, USA
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