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Quan N, Li X, Zhang J, Han Y, Sun W, Ren D, Tong Q, Li J. Substrate metabolism regulated by Sestrin2-mTORC1 alleviates pressure overload-induced cardiac hypertrophy in aged heart. Redox Biol 2020; 36:101637. [PMID: 32863202 PMCID: PMC7363709 DOI: 10.1016/j.redox.2020.101637] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/29/2020] [Accepted: 07/03/2020] [Indexed: 01/12/2023] Open
Abstract
Sestrin2 (Sesn2) is a stress sensor for the mammalian target of rapamycin complex 1 (mTORC1) pathway. Aging impairs cardiac mTORC1 activation, thereby sensitizing the heart to hypertrophy. C57BL/6 J young wild-type (young WT; 4-6 months), aged WT (24-26 months), and young Sestrin2 knockout mice (Y-Sesn2 KO; 4-6 months) underwent transverse aortic constriction (TAC) for pressure overload. Cardiac expression of Sesn2 decreased with age. At 4 weeks after TAC, aged WT and Y-Sesn2 KO exhibited larger hearts and impaired cardiac function, compared with young WT mice. Augmented phosphorylation of mTOR and downstream effectors; damaged mitochondria and elevated redox markers, as well as and impaired glucose and fatty acid oxidation were observed in aged WT and Y-Sesn2 KO hearts. A pressure overload-induced interaction between Sesn2 and GTPase-activating protein activity toward Rags 2 (GATOR2), which positively regulates mTORC1, was impaired in aged WT hearts. Adeno-associated virus 9-Sesn2 treatment rescued Sesn2 expression, attenuated mTORC1 activation, and increased pressure overload tolerance in aged WT and Y-Sesn2 KO hearts. These results indicated that cardiac Sesn2 acts as a pressure overload sensor for mTORC1. Furthermore, Sesn2 deficiency may cause increased sensitivity to hypertrophy in elderly individuals.
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Affiliation(s)
- Nanhu Quan
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, 130021, China,Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, 39216, USA,Corresponding author. Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, 130021, China. Tel.: +86 13844803504.
| | - Xuan Li
- Department of Physiology and Biophysics, University of Mississippi Medical Center, Jackson, MS, 39216, USA
| | - Jingwen Zhang
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Ying Han
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Weiju Sun
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Di Ren
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
| | - Qian Tong
- Department of Cardiovascular Center, The First Hospital of Jilin University, Changchun, 130021, China,Corresponding author. Tel.: +86 15804300981.
| | - Ji Li
- Department of Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL, 33612, USA
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Tiotiu A, Novakova P, Kowal K, Emelyanov A, Chong-Neto H, Novakova S, Labor M. Beta-blockers in asthma: myth and reality. Expert Rev Respir Med 2019; 13:815-822. [PMID: 31352857 DOI: 10.1080/17476348.2019.1649147] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Introduction: Patients with asthma often have important co-morbidities which reduce the likelihood of gaining optimal asthma control. Beta2-blockers are commonly prescribed for the treatment of different clinical indications, including coronary artery disease, cardiac arrhythmia, arterial hypertension, heart failure and glaucoma. Areas covered: The aim of this reviw is to summarize current evidence on the effect of systemic and local β-blockers on asthma outcomes based on their pharmacologic properties,and to help clinicians when prescribing for patients with asthma and co-morbidities. Current data suggest that risk of asthma worsening from systemic and local use of non-selective β-blockers outweighs any potential benefits for their clinical indications. Recent studies confirm that topical and systemic prescription of cardio-selective β-blockers is not associated with a significant increased risk of moderate or severe asthma exacerbations. Expert opinion: Non-selective β-blockers should not be prescribed for the management of comorbidities in patients with asthma while cardio-selective β-blockers, preferably in low doses, may be used when strongly indicated and other therapeutic options are not available. More prospective real-life studies are needed to evaluate the risk of long-term use of β-blockers in patients with asthma.
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Affiliation(s)
- Angelica Tiotiu
- Department of Pulmonology, University Hospital of Nancy , Nancy , France.,Cardio-respiratory regulation, EA3450 DevAH - Development, Adaptation and Disadvantage. Cardio-respiratory regulations and motor control. University of Lorraine , Nancy , France.,Airways Disease Section, National Heart and Lung Institute, Imperial College London , London , UK
| | - Plamena Novakova
- Clinic of Clinical Allergy, Medical University Sofia , Sofia , Bulgaria
| | - Krzysztof Kowal
- Department of Allergology and Internal Medicine , Bialystok , Poland.,Department of Experimental Allergology and Immunology, Medical University of Bialystok , Bialystok , Poland
| | - Alexander Emelyanov
- Department of Respiratory Medicine, North-Western Medical University , Saint-Petersburg , Russian Federation
| | - Herberto Chong-Neto
- Division of Allergy and Immunology, Department of Pediatrics, Federal University of Paraná , Curitiba , Brazil
| | - Silviya Novakova
- Allergy Unit, Internal Consulting Department, University Hospital "St. George" , Plovdiv , Bulgaria
| | - Marina Labor
- Department of Pulmonology, University Hospital Centre Osijek , Osijek , Croatia.,Medical Faculty Osijek, J.J. Strossmayer University , Osijek , Croatia
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Jain D. Cardiac adrenergic neuronal activity, sleep apnea, and potential therapeutic role of nocturnal ventilatory assistance in patients with heart failure. J Nucl Cardiol 2019; 26:1090-1092. [PMID: 29468470 DOI: 10.1007/s12350-018-1234-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 02/06/2018] [Indexed: 10/18/2022]
Affiliation(s)
- Diwakar Jain
- Section of Cardiovascular Medicine, New York Medical College and Westchester Medical Center, 100 Woods Road, Valhalla, NY, USA.
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Wu J, Thiyagarajan S, Fonseca Guerra C, Eduard P, Lutz M, Noordover BAJ, Koning CE, van Es DS. Isohexide Dinitriles: A Versatile Family of Renewable Platform Chemicals. CHEMSUSCHEM 2017; 10:3202-3211. [PMID: 28590079 DOI: 10.1002/cssc.201700617] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Indexed: 06/07/2023]
Abstract
Building blocks of isohexides extended by one carbon atom at the 2- or 5-positions are now synthetically accessible by a convenient, selective, base-catalyzed epimerization of the corresponding dinitriles. Kinetic experiments using the strong organic base 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) show that all three possible isohexide dinitrile isomers exist within a dynamic equilibrium. An epimerization mechanism based on density functional theory (DFT) calculations is proposed. Structural identification of all three possible isomers is based on NMR analysis and single crystal x-ray crystallography. DFT calculations confirm that the observed crystal structures are indeed the lowest energy conformers of these isohexide derivatives.
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Affiliation(s)
- Jing Wu
- Co-Innovation Center of Textile Industry, Donghua University, Northern Renmin Road 2999, Shanghai, P.R. China
- Food & Biobased Research, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5600, MB, Eindhoven, The Netherlands
| | - Shanmugam Thiyagarajan
- Food & Biobased Research, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
| | - Célia Fonseca Guerra
- Department of Theoretical Chemistry and Amsterdam Center for multiscale Modeling (ACMM), Vrije Universiteit Amsterdam, De Boelelaan 1083, 1081, HV, Amsterdam, The Netherlands
- Leiden Institut of Chemistry, Gorlaeus Laboratories, Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands
| | - Pieter Eduard
- Food & Biobased Research, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
| | - Martin Lutz
- Bijvoet Center for Biomolecular Research, Crystal and Structural Chemistry, Utrecht University, Padualaan 8, 3584, CH, Utrecht, The Netherlands
| | - Bart A J Noordover
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5600, MB, Eindhoven, The Netherlands
| | - Cor E Koning
- Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, Den Dolech 2, 5600, MB, Eindhoven, The Netherlands
| | - Daan S van Es
- Food & Biobased Research, Wageningen University, Bornse Weilanden 9, 6708, WG, Wageningen, The Netherlands
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Sica DA, Gehr TW, Frishman WH. Use of Diuretics in the Treatment of Heart Failure in Older Adults. Heart Fail Clin 2017; 13:503-512. [DOI: 10.1016/j.hfc.2017.02.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Altara R, Giordano M, Nordén ES, Cataliotti A, Kurdi M, Bajestani SN, Booz GW. Targeting Obesity and Diabetes to Treat Heart Failure with Preserved Ejection Fraction. Front Endocrinol (Lausanne) 2017; 8:160. [PMID: 28769873 PMCID: PMC5512012 DOI: 10.3389/fendo.2017.00160] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 06/23/2017] [Indexed: 12/12/2022] Open
Abstract
Heart failure with preserved ejection fraction (HFpEF) is a major unmet medical need that is characterized by the presence of multiple cardiovascular and non-cardiovascular comorbidities. Foremost among these comorbidities are obesity and diabetes, which are not only risk factors for the development of HFpEF, but worsen symptoms and outcome. Coronary microvascular inflammation with endothelial dysfunction is a common denominator among HFpEF, obesity, and diabetes that likely explains at least in part the etiology of HFpEF and its synergistic relationship with obesity and diabetes. Thus, pharmacological strategies to supplement nitric oxide and subsequent cyclic guanosine monophosphate (cGMP)-protein kinase G (PKG) signaling may have therapeutic promise. Other potential approaches include exercise and lifestyle modifications, as well as targeting endothelial cell mineralocorticoid receptors, non-coding RNAs, sodium glucose transporter 2 inhibitors, and enhancers of natriuretic peptide protective NO-independent cGMP-initiated and alternative signaling, such as LCZ696 and phosphodiesterase-9 inhibitors. Additionally, understanding the role of adipokines in HFpEF may lead to new treatments. Identifying novel drug targets based on the shared underlying microvascular disease process may improve the quality of life and lifespan of those afflicted with both HFpEF and obesity or diabetes, or even prevent its occurrence.
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Affiliation(s)
- Raffaele Altara
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, Oslo, Norway
- Department of Pathology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
- *Correspondence: Raffaele Altara,
| | - Mauro Giordano
- Department of Medical, Surgical, Neurological, Metabolic and Geriatrics Sciences, University of Campania “L. Vanvitelli”, Caserta, Italy
| | - Einar S. Nordén
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, Oslo, Norway
- Bjørknes College, Oslo, Norway
| | - Alessandro Cataliotti
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, Oslo, Norway
| | - Mazen Kurdi
- Faculty of Sciences, Department of Chemistry and Biochemistry, Lebanese University, Hadath, Lebanon
| | - Saeed N. Bajestani
- Department of Pathology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
- Department of Ophthalmology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
| | - George W. Booz
- Department of Pharmacology and Toxicology, School of Medicine, University of Mississippi Medical Center, Jackson, MS, United States
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