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Urban S, Fułek M, Błaziak M, Fułek K, Iwanek G, Jura M, Grzesiak M, Szymański O, Stańczykiewicz B, Ptaszkowski K, Zymlinski R, Ponikowski P, Biegus J. Role of dietary sodium restriction in chronic heart failure: systematic review and meta-analysis. Clin Res Cardiol 2024; 113:1331-1342. [PMID: 37389661 PMCID: PMC11371846 DOI: 10.1007/s00392-023-02256-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Accepted: 06/22/2023] [Indexed: 07/01/2023]
Abstract
BACKGROUND Dietary sodium restriction remains a guidelines-approved lifestyle recommendation for chronic heart failure (CHF) patients. However, its efficacy in clinical outcome improvement is dubious. OBJECTIVE The study evaluated whether dietary sodium restriction in CHF reduces clinical events. METHODS We performed a systematic review of the following databases: Academic Search Ultimate, ERIC, Health Source Nursing/Academic Edition, MEDLINE, Embase, Clinicaltrials.gov and Cochrane Library (trials) to find studies analysing the impact of sodium restriction in the adult CHF population. Both observational and interventional studies were included. Exclusion criteria included i.e.: sodium consumption assessment based only on natriuresis, in-hospital interventions or mixed interventions-e.g. sodium and fluid restriction in one arm only. The review was conducted following PRISMA guidelines. Meta-analysis was performed for the endpoints reported in at least 3 papers. Analyses were conducted in Review Manager (RevMan) Version 5.4.1. RESULTS Initially, we screened 9175 articles. Backward snowballing revealed 1050 additional articles. Eventually, 9 papers were evaluated in the meta-analysis. All-cause mortality, HF-related hospitalizations and the composite of mortality and hospitalisation were reported in 8, 6 and 3 articles, respectively. Sodium restriction was associated with a higher risk of the composite endpoint (OR 4.12 [95% CI 1.23-13.82]) and did not significantly affect the all-cause mortality (OR 1.38 [95% CI 0.76-2.49]) or HF hospitalisation (OR 1.63 [95% CI 0.69-3.88]). CONCLUSIONS In a meta-analysis, sodium restriction in CHF patients worsened the prognosis in terms of a composite of mortality and hospitalizations and did not influence all-cause mortality and HF hospitalisation rate.
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Affiliation(s)
- Szymon Urban
- Institute of Heart Diseases, Wroclaw Medical University, Wrocław, Poland
| | - Michał Fułek
- Department and Clinic of Internal Medicine, Occupational Diseases, Hypertension and Clinical Oncology, Wroclaw Medical University, Wroclaw, Poland
| | - Mikołaj Błaziak
- Institute of Heart Diseases, Wroclaw Medical University, Wrocław, Poland.
| | - Katarzyna Fułek
- Department and Clinic of Otolaryngology, Head and Neck Surgery, Wroclaw Medical University, Wroclaw, Poland
| | - Gracjan Iwanek
- Institute of Heart Diseases, Wroclaw Medical University, Wrocław, Poland
| | - Maksym Jura
- Department of Physiology and Pathophysiology, Wroclaw Medical University, Wroclaw, Poland
| | - Magdalena Grzesiak
- Student Scientific Organisation, Institute of Heart Disease, Wroclaw Medical University, Wroclaw, Poland
| | - Oskar Szymański
- Student Scientific Organisation, Institute of Heart Disease, Wroclaw Medical University, Wroclaw, Poland
| | - Bartłomiej Stańczykiewicz
- Division of Consultation Psychiatry and Neuroscience, Department of Psychiatry, Wroclaw Medical University, Wroclaw, Poland
| | - Kuba Ptaszkowski
- Department of Clinical Biomechanics and Physiotherapy in Motor System Disorders, Wroclaw Medical University, Wroclaw, Poland
| | - Robert Zymlinski
- Institute of Heart Diseases, Wroclaw Medical University, Wrocław, Poland
| | - Piotr Ponikowski
- Institute of Heart Diseases, Wroclaw Medical University, Wrocław, Poland
| | - Jan Biegus
- Institute of Heart Diseases, Wroclaw Medical University, Wrocław, Poland
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2
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Zhao Z, Wang Y, Jiang C, Yang Z, Zhang J, Lai Y, Wang J, Li S, Peng X, Li M, Li E, Guo H, Li J, Kong X, He L, Zuo S, Guo X, Li S, Liu N, Tang R, Sang C, Long D, Du X, He L, Dong J, Ma C. Impact of sodium-glucose cotransporter 2 inhibitor on recurrence and cardiovascular outcomes after catheter ablation for atrial fibrillation in patients with heart failure. Heart Rhythm 2024:S1547-5271(24)03153-9. [PMID: 39168296 DOI: 10.1016/j.hrthm.2024.08.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 07/30/2024] [Accepted: 08/12/2024] [Indexed: 08/23/2024]
Abstract
BACKGROUND The impact of sodium-glucose cotransporter 2 inhibitors (SGLT2i) on atrial fibrillation (AF) recurrence outcomes and adverse cardiovascular outcomes in heart failure (HF) patients after AF ablation is unknown. OBJECTIVE We investigated whether SGLT2i reduces the risk of AF recurrence and adverse cardiovascular outcomes in HF patients after AF ablation. METHODS HF patients with AF undergoing catheter ablation between January 2017 and December 2022 from the China-AF Registry were included. Patients were stratified into 2 groups on the basis of the use of SGLT2i at discharge and were 1:1 matched by propensity score, with SGLT2i using (n = 368) and non-SGLT2i using (n = 368) in each group. The primary outcome was AF recurrence after a 3-month blanking period. RESULTS During a total of 1315 person-years of follow-up, AF recurred in 83 patients (22.6%) in the SGLT2i group and 132 patients (35.8%) in the non-SGLT2i group. SGLT2i was associated with a lower risk of AF recurrence (adjusted hazard ratio, 0.56; 95% CI, 0.43-0.74; P < .001). The composite risk of cardiovascular death, thrombotic events, or cardiovascular hospitalization was significantly lower in the SGLT2i group compared with those without SGLT2i (adjusted hazard ratio, 0.58; 95% CI, 0.41-0.80; P = .001). Although there was a trend toward benefit, the differences in all-cause mortality, cardiovascular death, or thrombotic events were insignificant between the 2 groups. CONCLUSION The use of SGLT2i was associated with a lower risk of AF recurrence and the composite outcome of cardiovascular death, thrombotic events, or cardiovascular hospitalization after catheter ablation for AF in patients with HF.
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Affiliation(s)
- Zixu Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Yiping Wang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Chao Jiang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China.
| | - Zejun Yang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Jingrui Zhang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Yiwei Lai
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Jue Wang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Sitong Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Xiaodong Peng
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Mingxiao Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Enze Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Hang Guo
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Jiahe Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Xiangyi Kong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Liu He
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Song Zuo
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Xueyuan Guo
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Songnan Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Nian Liu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Ribo Tang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Caihua Sang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Deyong Long
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Xin Du
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China; Heart Health Research Center, Beijing, China
| | - Liping He
- Inner Mongolia Autonomous Region People's Hospital, Hohhot, Inner Mongolia, China.
| | - Jianzeng Dong
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China
| | - Changsheng Ma
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University and National Clinical Research Center for Cardiovascular Diseases, Beijing, China.
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Akamine MAV, Ferreira Soares BMA, Telles JPM, Cicupira Rodrigues de Assis A, Rodriguez GNV, Soares PR, Chalela WA, Scudeler TL. Role of Dapagliflozin in Ischemic Preconditioning in Patients with Symptomatic Coronary Artery Disease-DAPA-IP Study Protocol. Pharmaceuticals (Basel) 2024; 17:920. [PMID: 39065769 PMCID: PMC11280174 DOI: 10.3390/ph17070920] [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: 06/27/2024] [Revised: 07/05/2024] [Accepted: 07/07/2024] [Indexed: 07/28/2024] Open
Abstract
Background: Ischemic preconditioning (IP) is a powerful cellular protection mechanism. The cellular pathways underlying IP are extremely complex and involve the participation of cell triggers, intracellular signaling pathways, and end-effectors. Experimental studies have shown that sodium-glucose transport protein 2 (SGLT2) inhibitors promote activation of 5'-adenosine monophosphate (AMP)-activated protein kinase (AMPK), the main regulator of adenosine 5'-triphosphate homeostasis and energy metabolism in the body. Despite its cardioprotective profile demonstrated by numerous clinical trials, the results of studies on the action of SGLT2 inhibitors in IP are scarce. This study will investigate the effects of dapagliflozin on IP in patients with coronary artery disease (CAD). Methods: The study will include 50 patients with multivessel CAD, ischemia documented by stress testing, and preserved left ventricular ejection fraction (LVEF). Patients will undergo four exercise tests, the first two with a time interval of 30 min between them after washout of cardiovascular or hypoglycemic medications and the last two after 7 days of dapagliflozin 10 mg once a day, also with a time interval of 30 min between them. Discussion: The role of SGLT2 inhibitors on IP is not clearly established. Several clinical trials have shown that SGLT2 inhibitors reduce the occurrence cardiovascular events, notably heart failure. However, such studies have not shown beneficial metabolic effects of SGLT2 inhibitors, such as reducing myocardial infarction or stroke. On the other hand, experimental studies with animal models have shown the beneficial effects of SGLT2 inhibitors on IP, a mechanism that confers cardiac and vascular protection from subsequent ischemia-reperfusion (IR) injury. This is the first clinical study to evaluate the effects of SGLT2 inhibitors on IP, which could result in an important advance in the treatment of patients with stable CAD.
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Affiliation(s)
| | | | | | | | | | | | | | - Thiago Luis Scudeler
- Instituto do Coração (InCor), Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, Av. Dr. Enéas de Carvalho Aguiar, 44, Cerqueira César, São Paulo 05403-000, Brazil; (M.A.V.A.); (B.M.A.F.S.); (J.P.M.T.); (A.C.R.d.A.); (G.N.V.R.); (P.R.S.); (W.A.C.)
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Liao J, Ebrahimi R, Ling Z, Meyer C, Martinek M, Sommer P, Futyma P, Di Vece D, Schratter A, Acou WJ, Zhu L, Kiuchi MG, Liu S, Yin Y, Pürerfellner H, Templin C, Chen S. Effect of SGLT-2 inhibitors on arrhythmia events: insight from an updated secondary analysis of > 80,000 patients (the SGLT2i-Arrhythmias and Sudden Cardiac Death). Cardiovasc Diabetol 2024; 23:78. [PMID: 38402177 PMCID: PMC10893620 DOI: 10.1186/s12933-024-02137-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Accepted: 01/16/2024] [Indexed: 02/26/2024] Open
Abstract
OBJECTIVE We aimed to assess the effect of SGLT2i on arrhythmias by conducting a meta-analysis using data from randomized controlled trials(RCTs). BACKGROUND Sodium-glucose co-transporter 2 inhibitors (SGLT2i) have shown cardioprotective effects via multiple mechanisms that may also contribute to decrease arrhythmias risk. METHODS We searched in databases (PubMed, Embase, Cochrane Library, and clinicaltrials.gov) up to April 2023. RCTs comparing SGLT2i with placebo were included. The effects of SGLT2i on atrial fibrillation(AF), atrial flutter(AFL), composite AF/AFL, ventricular fibrillation(VF), ventricular tachycardia(VT), ventricular extrasystoles(VES), sudden cardiac death(SCD) and composite VF/VT/SCD were evaluated. RESULTS 33 placebo-controlled RCTs were included, comprising 88,098 patients (48,585 in SGLT2i vs. 39,513 in placebo). The mean age was 64.9 ± 9.4 years, 63.0% were male. The mean follow-up was 1.4 ± 1.1 years. The pooled-results showed that SGLT2i was associated with a significantly lower risk of AF [risk ratio(RR): 0.88, 95% confidence interval(CI) 0.78-1.00, P = 0.04] and composite AF/AFL (RR: 0.86, 95%CI 0.77-0.96, P = 0.01). This favorable effect appeared to be substantially pronounced in patients with HFrEF, male gender, dapagliflozin, and > 1 year follow-up. For SCD, only in heart failure patients, SGLT2i were found to be associated with a borderline lower risk of SCD (RR: 0.67, P = 0.05). No significant effects of SGLT2i on other ventricular arrhythmic outcomes were found. CONCLUSIONS SGLT2i lowers the risks of AF and AF/AFL, and this favorable effect appeared to be particularly pronounced in patients with HFrEF, male gender, dapagliflozin, and longer follow-up (> 1 year). SGLT2i lowers the risk of SCD only in heart failure patients.
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Affiliation(s)
- Jia Liao
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ramin Ebrahimi
- Heart Clinic Pratteln, Zentrum Für Kardiologie, Pratteln, Switzerland
| | - Zhiyu Ling
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
| | - Christian Meyer
- Department of Cardiology, Angiology, Intensive Care, cNEP, Cardiac Neuro- & Electrophysiology Research Consortium, EVK Düsseldorf, Düsseldorf, Germany
- DZHK (German Center for Cardiovascular Research), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany
- Institute of Neural and Sensory Physiology, Heinrich Heine University Düsseldorf, Düsseldorf, Germany
| | - Martin Martinek
- Department for Internal Medicine 2 - Cardiology, Angiology, and Intensive Care, Akademisches Lehrkrankenhaus, Ordensklinikum Linz Elisabethinen, Linz, Austria
| | - Philipp Sommer
- Klinik Für Elektrophysiologie/Rhythmologie, Herz- Und Diabeteszentrum Nordrhein-Westfalen, Universitätsklinik Der Ruhr-Universität Bochum, Bad Oeynhausen, Germany
| | - Piotr Futyma
- St. Joseph's Heart Rhythm Center, Medical College, University of Rzeszów, Rzeszów, Poland
| | - Davide Di Vece
- University Heart Center, Department of Cardiology, University Hospital Zurich, and University of Zurich, Zurich, Switzerland
| | | | | | - Lin Zhu
- Kardiologie, Frankfurt Rotkreuz Kliniken, Frankfurt am Main, Germany
| | - Márcio G Kiuchi
- School of Medicine-Royal Perth Hospital Unit, University of Western Australia, Perth, Australia
| | - Shaowen Liu
- Department of Cardiology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuehui Yin
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Helmut Pürerfellner
- Department for Internal Medicine 2 - Cardiology, Angiology, and Intensive Care, Akademisches Lehrkrankenhaus, Ordensklinikum Linz Elisabethinen, Linz, Austria
| | - Christian Templin
- University Heart Center, Department of Cardiology, University Hospital Zurich, and University of Zurich, Zurich, Switzerland
| | - Shaojie Chen
- Department of Cardiology, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, China.
- Department for Internal Medicine 2 - Cardiology, Angiology, and Intensive Care, Akademisches Lehrkrankenhaus, Ordensklinikum Linz Elisabethinen, Linz, Austria.
- Cardioangiologisches Centrum Bethanien (CCB), Kardiologie, Medizinische Klinik III, Agaplesion Markus Krankenhaus, Akademisches Lehrkrankenhaus der Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany.
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5
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Copur S, Yildiz AB, Covic A, Kanbay M. Is there any robust evidence showing that SGLT2 inhibitor predisposes to cancer? Eur J Clin Invest 2024; 54:e14131. [PMID: 38010034 DOI: 10.1111/eci.14131] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 05/07/2023] [Accepted: 06/08/2023] [Indexed: 11/29/2023]
Abstract
BACKGROUND The exact pathophysiological mechanisms of SGLT-2 inhibitors in the development, progression or treatment of malignancies are not fully understood, but multiple hypotheses have been proposed. SGLT-2 inhibitors have potential anti-proliferative roles due to several underlying pathophysiological mechanisms, such as inhibition of ATP production, activation of AMPK signalling, induction of apoptosis and ferroptosis, inhibition of glutamate dehydrogenase activity and inhibition of DNA and RNA synthesis. However, heterogeneity among tumour cells and SGLT-2 inhibitor drugs limit the generalizability of pre-clinical studies. METHODS This is a narrative review discussing the potential anti-cancer effects of SGLT-2 inhibitors, an oral glucose-lowering medication used in patients with type II diabetes mellitus. This review discusses underlying mechanisms, pre-clinical and clinical trial data, epidemiological data and future perspectives on the use of SGLT-2 inhibitors in cancer treatment. RESULTS Type II diabetes is linked to various comorbidities and malignancies, but some glucose-slowering medications may have a preventive role in cancer. The use of SGLT-2 inhibitors was associated with bladder cancer based on mice studies. However, meta-analyses showed no significant increase in overall malignancy incidence of any specific type, except for empagliflozin and bladder cancer association. SGLT-2 inhibitors can potentially reduce the heart damage caused by doxorubicin and sunitinib, while enhancing the anti-cancer effects of doxorubicin. Combining SGLT-2 inhibitors with doxorubicin may allow higher doses of chemotherapy use. Multiple ongoing clinical trials are investigating the potential therapeutic potential of SGLT-2 inhibitors in various types of cancer. CONCLUSION More large-scale pre-clinical and clinical studies are needed to explore their potential preventive and therapeutic roles of SGLT-2 inhibitors in cancer treatment. In this narrative review, our aim is to explore the pre-clinical and clinical data regarding the potential anti-cancer effects of SGLT-2 inhibitors including the hypothetical pathophysiological mechanisms.
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Affiliation(s)
- Sidar Copur
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Abdullah B Yildiz
- Department of Medicine, Koc University School of Medicine, Istanbul, Turkey
| | - Adrian Covic
- Department of Nephrology, Faculty of Medicine, Grigore T. Popa University of Medicine and Pharmacy of Iasi, Iasi, Romania
| | - Mehmet Kanbay
- Department of Medicine, Section of Nephrology, Koc University School of Medicine, Istanbul, Turkey
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Li N, Chelu MG, Birnbaum Y. Dapagliflozin for Atrial Fibrillation. Cardiovasc Drugs Ther 2024; 38:1-3. [PMID: 38319469 PMCID: PMC11428186 DOI: 10.1007/s10557-024-07543-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/02/2024] [Indexed: 02/07/2024]
Affiliation(s)
- Na Li
- Department of Medicine (Section of Cardiovascular Research), Baylor College of Medicine, Houston, USA
| | - Mihail G Chelu
- Department of Medicine (Section of Cardiology), Baylor College of Medicine, 7200 Cambridge Street, MS BCM620, Houston, TX, 77030, USA
| | - Yochai Birnbaum
- Department of Medicine (Section of Cardiology), Baylor College of Medicine, 7200 Cambridge Street, MS BCM620, Houston, TX, 77030, USA.
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Elsayed M, Moustafa YM, Mehanna ET, Elrayess RA, El-Sayed NM, Hazem RM. Empagliflozin protects against isoprenaline-induced fibrosis in rat heart through modulation of TGF-β/SMAD pathway. Life Sci 2024; 337:122354. [PMID: 38110076 DOI: 10.1016/j.lfs.2023.122354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 12/09/2023] [Accepted: 12/12/2023] [Indexed: 12/20/2023]
Abstract
AIM Cardiac fibrosis is characterized by excessive accumulation of fibrous tissue, particularly collagens, in the myocardium. Accumulated fibrous tissue renders myocardium stiffer and reduces its contractility. Empagliflozin is an oral hypoglycemic agent with extra-diabetic functional profile toward maintaining cardiac functions. The present study aimed to examine protective effect of empagliflozin against an in-vivo model of cardiac fibrosis induced by isoprenaline and targeting TGF-β/SMAD signaling as a possible pathway responsible for such effect. MAIN METHODS Sixty animals were divided into six groups; the first was normal, and the second was treated with isoprenaline only (5 mg/kg/day I.P.) as a control. The third received pirfenidone (500 mg/kg/day P.O.), and the remaining groups received graded doses (5, 10, 20 mg/kg respectively) of empagliflozin for 14 days before fibrosis induction by isoprenaline (5 mg/kg/day) for 30 days. KEY FINDINGS Isoprenaline increased cardiac enzymes, and cardiac tissues revealed elevated concentrations of transforming growth factor β (TGF-β1), monocyte chemoattractant protein 1 (MCP-1), tumor necrosis factor α (TNF-α), and c-jun N-terminal kinase (JNK) proteins. Expression of nuclear factor kappa B (NF-κB), alpha smooth muscle actin (α-SMA), collagens, suppressor of mothers against decapentaplegic (SMADs), connective tissue growth factor (CTGF), and fibronectin was upregulated. Empagliflozin improved the histological picture of heart tissue in comparison to fibrosis developed in controls, and protected against fibrosis through significant modulation of all mentioned parameters' concentrations and expressions. SIGNIFICANCE Empagliflozin demonstrated a promising protective approach against biological model of cardiac fibrosis through an anti-fibrotic effect through targeting TGF-β signaling pathways.
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Affiliation(s)
- Mohammed Elsayed
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Yasser M Moustafa
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; Department of Pharmacology & Toxicology, Faculty of Pharmacy, Badr University in Cairo, Cairo 11829, Egypt
| | - Eman T Mehanna
- Department of Biochemistry, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt; Department of Biochemistry, Faculty of Pharmacy, Galala University, New Galala 43713, Egypt.
| | - Ranwa A Elrayess
- Department of Zoology, Faculty of Science, Suez Canal University, Ismailia 41522, Egypt
| | - Norhan M El-Sayed
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
| | - Reem M Hazem
- Department of Pharmacology & Toxicology, Faculty of Pharmacy, Suez Canal University, Ismailia 41522, Egypt
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8
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Zhang Q, Deng Z, Li T, Chen K, Zeng Z. SGLT2 inhibitor improves the prognosis of patients with coronary heart disease and prevents in-stent restenosis. Front Cardiovasc Med 2024; 10:1280547. [PMID: 38274313 PMCID: PMC10808651 DOI: 10.3389/fcvm.2023.1280547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2023] [Accepted: 12/27/2023] [Indexed: 01/27/2024] Open
Abstract
Coronary heart disease is a narrowing or obstruction of the vascular cavity caused by atherosclerosis of the coronary arteries, which leads to myocardial ischemia and hypoxia. At present, percutaneous coronary intervention (PCI) is an effective treatment for coronary atherosclerotic heart disease. Restenosis is the main limiting factor of the long-term success of PCI, and it is also a difficult problem in the field of intervention. Sodium-glucose cotransporter 2 (SGLT2) inhibitor is a new oral glucose-lowering agent used in the treatment of diabetes in recent years. Recent studies have shown that SGLT2 inhibitors can effectively improve the prognosis of patients after PCI and reduce the occurrence of restenosis. This review provides an overview of the clinical studies and mechanisms of SGLT2 inhibitors in the prevention of restenosis, providing a new option for improving the clinical prognosis of patients after PCI.
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Affiliation(s)
| | | | | | | | - Zhihuan Zeng
- Department of Cardiovascular Diseases, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong Province, China
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9
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Saha S, Fang X, Green CD, Das A. mTORC1 and SGLT2 Inhibitors-A Therapeutic Perspective for Diabetic Cardiomyopathy. Int J Mol Sci 2023; 24:15078. [PMID: 37894760 PMCID: PMC10606418 DOI: 10.3390/ijms242015078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/27/2023] [Accepted: 10/04/2023] [Indexed: 10/29/2023] Open
Abstract
Diabetic cardiomyopathy is a critical diabetes-mediated co-morbidity characterized by cardiac dysfunction and heart failure, without predisposing hypertensive or atherosclerotic conditions. Metabolic insulin resistance, promoting hyperglycemia and hyperlipidemia, is the primary cause of diabetes-related disorders, but ambiguous tissue-specific insulin sensitivity has shed light on the importance of identifying a unified target paradigm for both the glycemic and non-glycemic context of type 2 diabetes (T2D). Several studies have indicated hyperactivation of the mammalian target of rapamycin (mTOR), specifically complex 1 (mTORC1), as a critical mediator of T2D pathophysiology by promoting insulin resistance, hyperlipidemia, inflammation, vasoconstriction, and stress. Moreover, mTORC1 inhibitors like rapamycin and their analogs have shown significant benefits in diabetes and related cardiac dysfunction. Recently, FDA-approved anti-hyperglycemic sodium-glucose co-transporter 2 inhibitors (SGLT2is) have gained therapeutic popularity for T2D and diabetic cardiomyopathy, even acknowledging the absence of SGLT2 channels in the heart. Recent studies have proposed SGLT2-independent drug mechanisms to ascertain their cardioprotective benefits by regulating sodium homeostasis and mimicking energy deprivation. In this review, we systematically discuss the role of mTORC1 as a unified, eminent target to treat T2D-mediated cardiac dysfunction and scrutinize whether SGLT2is can target mTORC1 signaling to benefit patients with diabetic cardiomyopathy. Further studies are warranted to establish the underlying cardioprotective mechanisms of SGLT2is under diabetic conditions, with selective inhibition of cardiac mTORC1 but the concomitant activation of mTORC2 (mTOR complex 2) signaling.
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Affiliation(s)
- Sumit Saha
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298, USA; (S.S.); (X.F.); (C.D.G.)
| | - Xianjun Fang
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298, USA; (S.S.); (X.F.); (C.D.G.)
| | - Christopher D. Green
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298, USA; (S.S.); (X.F.); (C.D.G.)
| | - Anindita Das
- Division of Cardiology, Pauley Heart Center, Department of Internal Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
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10
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Han X, Liu X, Zhao X, Wang X, Sun Y, Qu C, Liang J, Yang B. Dapagliflozin ameliorates sepsis-induced heart injury by inhibiting cardiomyocyte apoptosis and electrical remodeling through the PI3K/Akt pathway. Eur J Pharmacol 2023; 955:175930. [PMID: 37479014 DOI: 10.1016/j.ejphar.2023.175930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 07/19/2023] [Accepted: 07/19/2023] [Indexed: 07/23/2023]
Abstract
BACKGROUND Sepsis-induced heart injury is one of the leading causes of circulation disorders worldwide. Dapagliflozin, a sodium-glucose cotransporter 2 inhibitor mainly used for controlling blood glucose, has been shown to exert a protective effect on cardiomyocytes. However, the protective effect of dapagliflozin against sepsis-induced cardiac injury and the underlying mechanism needs to be studied. AIM This study aims to investigate the effect of dapagliflozin on sepsis-induced cardiomyopathy and the potential mechanisms involved. METHODS The rat model of sepsis was constructed by intraperitoneal injection of lipopolysaccharide. Echocardiography and electrophysiological studies were performed to detect changes in cardiac function and electrical activity. Cardiac pathological alternation and cardiomyocyte apoptosis were measured by H&E staining, serological analysis, immunohistochemical, immunofluorescence, and TUNEL assays. Western blot and qRT-PCR were performed to elucidate the underlying mechanism of dapagliflozin. Additionally, corresponding experiments in H9c2 cells were performed to further validate the mechanisms in vitro. RESULTS Dapagliflozin improved cardiac dysfunction and reduced the susceptibility to ventricular arrhythmias in sepsis rats by ameliorating cardiac inflammation, suppressing cardiomyocyte apoptosis, and alleviating ventricular electrical remodeling. The PI3K/Akt signaling pathway inhibitor inhibited the anti-apoptotic effect of dapagliflozin, indicating that the protective effect was related to the activation of the PI3K/Akt pathway. CONCLUSION Dapagliflozin ameliorated sepsis-induced cardiac injury by suppressing electrical remodeling and cardiomyocyte apoptosis, which could be attributed to the PI3K/Akt pathway.
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Affiliation(s)
- Xueyu Han
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Xin Liu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Xin Zhao
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Xiukun Wang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Yazhou Sun
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Chuan Qu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Jinjun Liang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
| | - Bo Yang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan, 430060, PR China; Cardiovascular Research Institute, Wuhan University, Wuhan, 430060, PR China; Hubei Key Laboratory of Cardiology, Wuhan, 430060, PR China.
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11
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Imre E, Gunhan HG, Erel P, Ustay O. SGLT2 inhibitors improve plasma atherogenic biomarkers in patients with type 2 diabetes: a real-world retrospective observational study. Minerva Endocrinol (Torino) 2023; 48:295-304. [PMID: 33979071 DOI: 10.23736/s2724-6507.21.03465-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND There are cost-effective, non-invasive, and predictive tools used to predict the CVD risk in patients with diabetes such as the "atherogenic index of plasma (AIP)" which is defined as the logarithm to the base 10 of the ratio of fasting plasma TG (mg/dL) to HDL-C [log (TG/HDL-C)], triglyceride to high density lipoprotein (TG-to-HDL-C) ratio and the triglyceride glucose (TyG) index which is calculated as Ln (fasting TG [mg/dL] × fasting blood glucose (mg/dL)/2). These tools are indirect markers of atherosclerosis. Dapagliflozin and empagliflozin have exhibited cardiovascular beneficial effects and this study evaluated the effects of sodium glucose cotransporter 2 inhibitors (SGLT2i) on AIP, TyG index and TG-to-HDL-C ratio in patients with type 2 diabetes. METHODS This single center, retrospective, observational study involved patients with type 2 diabetic patients who were prescribed SGLT2i in the endocrinology outpatient clinic between January 2017 and June 2019. Demographic and clinical data were collected from patient files. AIP, TyG index and TG-to-HDL-C ratio were calculated obtained at the first visit and the sixth month visit. RESULTS Overall, 143 patients with T2DM (75 women, 68 men) were recruited in this study. Sixty-six patients were prescribed dapagliflozin (46.2%), and 77 were prescribed empagliflozin (53.8%). SGLT2i treatment did not alter the lipid profile except the serum triglyceride (TG) levels. Serum TG levels were significantly reduced after 6 months of SGLT2i therapy (P=0.045). All patients had significant reductions in AIP at 6-month follow-up (P<0.001), accompanied by a significant reduction in TyG index (P<0.001). Both empagliflozin and dapagliflozin caused significant decrease in AIP (P=0.043 and P<0.001, respectively) and TyG index (P=0.010 and P<0.001, respectively). CONCLUSIONS Both dapagliflozin and empagliflozin were noted to significantly affect AIP and TyG indexes, which indicate atherosclerotic cardiovascular risk, with or without statin treatment regardless of lipid parameters.
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Affiliation(s)
- Eren Imre
- Department of Endocrinology and Metabolism, Dr Ersin Arslan Training and Research Hospital, Gaziantep, Türkiye
| | - Hatice G Gunhan
- Department of Internal Medicine, Marmara University Training and Research Hospital, Istanbul, Türkiye
| | - Pinar Erel
- Department of Internal Medicine, Suhut State Hospital, Afyon, Türkiye
| | - Ozlem Ustay
- School of Medicine, Department of Endocrinology and Metabolism, Marmara University, Istanbul, Türkiye -
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Zhang T, Wang X, Wang Z, Zhai J, He L, Wang Y, Zuo Q, Ma S, Zhang G, Guo Y. Canagliflozin Ameliorates Ventricular Remodeling through Apelin/Angiotensin-Converting Enzyme 2 Signaling in Heart Failure with Preserved Ejection Fraction Rats. Pharmacology 2023; 108:478-491. [PMID: 37611563 DOI: 10.1159/000533277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 07/24/2023] [Indexed: 08/25/2023]
Abstract
INTRODUCTION The aim of this study was to investigate the effect of canagliflozin (CANA) on ventricular remodeling in patients with preserved ejection fraction (HFpEF) heart failure and to further investigate its possible molecular mechanisms. METHODS A high-salt diet was used to induce the formation of HFpEF model in salt-sensitive rats. The rats were fed with CANA and irbesartan, respectively. The mice were divided into control group, model group, CANA group, irbesartan group, and combined drug group. After 12 weeks of feeding, the rats were evaluated by measuring the relevant indexes and echocardiography for cardiac function. Histological analysis was performed using Masson trichrome staining and immunohistochemical staining. RT-qPCR and Western blot were used to quantify the relevant genes and proteins. RESULTS In this study, CANA exhibited diuresis, decreased blood pressure, weight loss, and increased food and water intake. Following a high-salt diet, Dahl salt-sensitive rats developed hypertension followed by left ventricular diastolic dysfunction, myocardial fibrosis, and left ventricular remodeling. Myocardial hypertrophy and fibrosis were reduced, and left ventricular diastolic function and ventricular remodeling improved after CANA treatment. The combination of CANA and irbesartan was superior to monotherapy in reducing blood pressure and improving cardiac insufficiency and left ventricular diastolic dysfunction in rats. CANA improves myocardial fibrosis, left ventricular diastolic dysfunction, and ventricular remodeling by upregulating apelin, activating angiotensin-converting enzyme 2 (ACE2), and increasing ACE2/Ang (1-7)/MASR axis levels. CONCLUSION CANA improves myocardial fibrosis, left ventricular diastolic dysfunction, and ventricular remodeling in HFpEF rats through upregulation of apelin/ACE2 signaling.
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Affiliation(s)
- Tingting Zhang
- Department of Internal Medicine, Hebei Medical University, Shijiazhuang, China,
- Department of Geriatric Cardiology, Hebei General Hospital, Shijiazhuang, China,
| | - Xinyu Wang
- College of Postgraduate, Hebei North University, Zhangjiakou, China
| | - Zhongli Wang
- Department of Physical Examination Center, Hebei General Hospital, Shijiazhuang, China
| | - Jianlong Zhai
- Department of Cardiology, Hebei General Hospital, Shijiazhuang, China
| | - Lili He
- Department of Geriatric Cardiology, Hebei General Hospital, Shijiazhuang, China
| | - Yan Wang
- Department of Geriatric Cardiology, Hebei General Hospital, Shijiazhuang, China
| | - Qingjuan Zuo
- Department of Geriatric Cardiology, Hebei General Hospital, Shijiazhuang, China
| | - Sai Ma
- Department of Internal Medicine, Hebei General Hospital, Shijiazhuang, China
| | - Guorui Zhang
- Department of Cardiology, The Third Hospital of Shijiazhuang City Affiliated to Hebei Medical University, Shijiazhuang, China
| | - Yifang Guo
- Department of Internal Medicine, Hebei Medical University, Shijiazhuang, China
- Department of Geriatric Cardiology, Hebei General Hospital, Shijiazhuang, China
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13
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Feng B, Yu P, Yu H, Qian B, Li Y, Sun K, Shi B, Zhang N, Xu G. Therapeutic effects on the development of heart failure with preserved ejection fraction by the sodium-glucose cotransporter 2 inhibitor dapagliflozin in type 2 diabetes. Diabetol Metab Syndr 2023; 15:141. [PMID: 37386620 DOI: 10.1186/s13098-023-01116-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Accepted: 06/17/2023] [Indexed: 07/01/2023] Open
Abstract
BACKGROUND Heart failure with preserved ejection fraction (HFpEF) is a common disease with high morbidity and lacks effective treatment. We investigated the protective effects of the long-term application of the sodium-glucose cotransporter 2 inhibitor (SGLT2i) dapagliflozin on diabetes-associated HFpEF in a rat model. Serum proteomics and metabolomics analysis were also conducted in type 2 diabetic patients with HFpEF treated with dapagliflozin. METHODS Male Zucker diabetic fatty (ZDF) rats were used as a model of diabetic cardiomyopathy. From weeks 16 to 28, animals were given a vehicle or dapagliflozin (1 mg/kg) once daily. Primary blood biochemistry indices, echocardiography, histopathology, and cardiac hemodynamics were determined during the study period. The key markers of myocardial fibrosis, nitro-oxidative stress, inflammation, apoptosis, autophagy, and AMPK/mTOR signaling were examined. Additionally, healthy controls and individuals with type 2 diabetes were enrolled and 16 serum samples from 4 groups were randomly selected. Serum proteome and metabolome changes after dapagliflozin treatment were analyzed in diabetic individuals with HFpEF. RESULTS Dapagliflozin effectively prevented the development of HFpEF in rats with diabetes by mitigating nitro-oxidative stress, pro-inflammatory cytokines, myocardial hypertrophy, and fibrosis, reducing apoptosis, and restoring autophagy through AMPK activating and mTOR pathway repressing. Proteomics and metabolomics revealed that cholesterol and high-density lipoprotein particle metabolism, nicotinate and nicotinamide metabolism, arginine biosynthesis, and cAMP and peroxisome proliferator-activated receptor (PPAR) signaling are the major disturbed pathways in HFpEF patients treated with dapagliflozin. CONCLUSION Long-term treatment with dapagliflozin significantly prevented the development of HFpEF in diabetic rats. Dapagliflozin could be a promising therapeutic strategy in managing HFpEF individuals with type 2 diabetes.
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Affiliation(s)
- Bin Feng
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Peiran Yu
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Hao Yu
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Buyun Qian
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Yuan Li
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Kangyun Sun
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China
| | - Bimin Shi
- Department of Endocrinology and Metabolism, The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, People's Republic of China
| | - Nannan Zhang
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China.
| | - Guidong Xu
- Department of Cardiology, The Affiliated Suzhou Hospital of Nanjing Medical University, 242 Guangji Road, Suzhou, 215008, Jiangsu, People's Republic of China.
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14
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Croteau D, Baka T, Young S, He H, Chambers JM, Qin F, Panagia M, Pimentel DR, Balschi JA, Colucci WS, Luptak I. SGLT2 inhibitor ertugliflozin decreases elevated intracellular sodium, and improves energetics and contractile function in diabetic cardiomyopathy. Biomed Pharmacother 2023; 160:114310. [PMID: 36731341 PMCID: PMC9992115 DOI: 10.1016/j.biopha.2023.114310] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/17/2023] [Accepted: 01/26/2023] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Elevated myocardial intracellular sodium ([Na+]i) was shown to decrease mitochondrial calcium ([Ca2+]MITO) via mitochondrial sodium/calcium exchanger (NCXMITO), resulting in decreased mitochondrial ATP synthesis. The sodium-glucose co-transporter 2 inhibitor (SGLT2i) ertugliflozin (ERTU) improved energetic deficit and contractile dysfunction in a mouse model of high fat, high sucrose (HFHS) diet-induced diabetic cardiomyopathy (DCMP). As SGLT2is were shown to lower [Na+]i in isolated cardiomyocytes, we hypothesized that energetic improvement in DCMP is at least partially mediated by a decrease in abnormally elevated myocardial [Na+]i. METHODS Forty-two eight-week-old male C57BL/6J mice were fed a control or HFHS diet for six months. In the last month, a subgroup of HFHS-fed mice was treated with ERTU. At the end of the study, left ventricular contractile function and energetics were measured simultaneously in isolated beating hearts by 31P NMR (Nuclear Magnetic Resonance) spectroscopy. A subset of untreated HFHS hearts was perfused with vehicle vs. CGP 37157, an NCXMITO inhibitor. Myocardial [Na+]i was measured by 23Na NMR spectroscopy. RESULTS HFHS hearts showed diastolic dysfunction, decreased contractile reserve, and impaired energetics as reflected by decreased phosphocreatine (PCr) and PCr/ATP ratio. Myocardial [Na+]i was elevated > 2-fold in HFHS (vs. control diet). ERTU reversed the impairments in HFHS hearts to levels similar to or better than control diet and decreased myocardial [Na+]i to control levels. CGP 37157 normalized the PCr/ATP ratio in HFHS hearts. CONCLUSIONS Elevated myocardial [Na+]i contributes to mitochondrial and contractile dysfunction in DCMP. Targeting myocardial [Na+]i and/or NCXMITO may be an effective strategy in DCMP and other forms of heart disease associated with elevated myocardial [Na+]i.
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Affiliation(s)
- Dominique Croteau
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - Tomas Baka
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - Sara Young
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - Huamei He
- Physiological NMR Core Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Jordan M Chambers
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - Fuzhong Qin
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - Marcello Panagia
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - David R Pimentel
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - James A Balschi
- Physiological NMR Core Laboratory, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Wilson S Colucci
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA
| | - Ivan Luptak
- Myocardial Biology Unit, Boston University School of Medicine, Boston, MA, USA.
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15
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Erdem S, Titus A, Patel D, Patel NN, Sattar Y, Glazier J, Alraies MC. Sodium-Glucose Cotransporter 2 Inhibitors: A Scoping Review of the Positive Implications on Cardiovascular and Renal Health and Dynamics for Clinical Practice. Cureus 2023; 15:e37310. [PMID: 37182087 PMCID: PMC10166724 DOI: 10.7759/cureus.37310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2023] [Indexed: 05/16/2023] Open
Abstract
Cardiorenal benefits of sodium-glucose cotransporter 2 inhibitors (SGLT2is) have been demonstrated in patients with type 2 diabetes in multiple trials. We aim to provide a comprehensive review of the role of SGLT2i in cardiovascular disease. Reducing blood glucose to provide more effective vascular function, lowering the circulating volume, reducing cardiac stress, and preventing pathological cardiac re-modeling and function are the mechanisms implicated in the beneficial cardiovascular effects of SGLT2 inhibitors. Treatment with SGLT2i was associated with a decrease in cardiovascular and all-cause mortality, acute heart failure exacerbation hospitalization, and composite adverse renal outcomes. Improved symptoms, better functional status, and quality of life were also seen in heart failure with reduced ejection fraction (HFrEF), heart failure and mildly reduced ejection fraction (HFmrEF), and heart failure with preserved ejection fraction (HFpEF) patients. Recent trials have shown a notable therapeutic benefit of SGLT2is in acute heart failure and also suggest that SGLT2is have the potential to strengthen recovery after acute myocardial infarction (AMI) in percutaneous coronary Intervention (PCI) patients. The mechanism behind the cardio-metabolic and renal-protective effects of SGLT2i is multifactorial. Adverse events may occur with their usage including increased risk of genital infections, diabetic ketoacidosis, and perhaps limited amputations; however, all of them are preventable. Overall, SGLT2i clearly has many beneficial effects, and the benefits of using SGLT2i by far outweigh the risks.
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Affiliation(s)
- Saliha Erdem
- Internal Medicine, Wayne State University School of Medicine, Detroit, USA
| | - Anoop Titus
- Internal Medicine, Saint Vincent Hospital, Worcester, USA
- Medicine, Government Medical College Thrissur, Thrissur, IND
| | - Dhruvil Patel
- Internal Medicine, Wayne State University School of Medicine, Detroit, USA
| | - Neel N Patel
- Internal Medicine, New York Medical College/Landmark Medical Center, Woonsocket, USA
- Medicine, B. J. (Byramjee Jeejeebhoy) Medical College, Ahmedabad, IND
| | - Yasar Sattar
- Cardiology, West Virginia University, Morgantown, USA
- Internal Medicine, Icahn School of Medicine at Mount Sinai, New York City, USA
| | - James Glazier
- Cardiology, Wayne State University/Detroit Medical Center, Detroit, USA
| | - M Chadi Alraies
- Cardiology, Wayne State University/Detroit Medical Center, Detroit, USA
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16
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Velliou M, Polyzogopoulou E, Ventoulis I, Parissis J. Clinical pharmacology of SGLT-2 inhibitors in heart failure. Expert Rev Clin Pharmacol 2023; 16:149-160. [PMID: 36701817 DOI: 10.1080/17512433.2023.2173574] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
INTRODUCTION Sodium-glucose cotransporter 2 (SGLT2) inhibitors constitute a class of oral antiglycemic agents that have emerged as a new therapeutic strategy for heart failure (HF) with reduced ejection fraction (HFrEF) and, potentially, for HF with preserved ejection fraction (HFpEF). AREAS COVERED Ongoing efforts to clarify the exact mechanisms of action of SGLT2 inhibitors (SGLT2i) reveal that glycosuria and osmotic diuresis, resulting from the blockade of renal receptors, is not the sole pathophysiological mechanism. Nevertheless, the underlying mechanisms, accounting for their cardiovascular beneficial effects which have been clearly demonstrated in clinical trials, remain unclear. The aim of this review is to summarize the primary outcomes of large-scale studies regarding the use of SGLT2i in HF and provide an overview of the potential pathways involved in the SGLT2i-mediated cardioprotection. EXPERT OPINION SGLT2i exhibit favorable pleiotropic effects, which extend beyond their primary indication as pharmaceutical agents intended for glycemic control. Given their unique pathophysiological profile, these agents have revolutionized the management of HF, while in the near future, it is possible that evolving research in the field may unfold further perspectives on their potential use in the treatment of other chronic conditions.
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Affiliation(s)
- Maria Velliou
- Emergency Medicine Department, Attikon University Hospital, Athens, Greece
| | | | - Ioannis Ventoulis
- Department of Occupational Therapy, University of Western Macedonia, Ptolemaida, Greece
| | - John Parissis
- Emergency Medicine Department, Attikon University Hospital, Athens, Greece.,Heart Failure Clinic, Attikon University Hospital, Athens, Greece
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17
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Gao Z, Bao J, Hu Y, Tu J, Ye L, Wang L. Sodium-glucose Cotransporter 2 Inhibitors and Pathological Myocardial Hypertrophy. Curr Drug Targets 2023; 24:1009-1022. [PMID: 37691190 PMCID: PMC10879742 DOI: 10.2174/1389450124666230907115831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 08/18/2023] [Accepted: 08/23/2023] [Indexed: 09/12/2023]
Abstract
Sodium-glucose cotransporter 2 (SGLT2) inhibitors are a new type of oral hypoglycemic drugs that exert a hypoglycemic effect by blocking the reabsorption of glucose in the proximal renal tubules, thus promoting the excretion of glucose from urine. Their hypoglycemic effect is not dependent on insulin. Increasing data shows that SGLT2 inhibitors improve cardiovascular outcomes in patients with type 2 diabetes. Previous studies have demonstrated that SGLT2 inhibitors can reduce pathological myocardial hypertrophy with or without diabetes, but the exact mechanism remains to be elucidated. To clarify the relationship between SGLT2 inhibitors and pathological myocardial hypertrophy, with a view to providing a reference for the future treatment thereof, this study reviewed the possible mechanisms of SGLT2 inhibitors in attenuating pathological myocardial hypertrophy. We focused specifically on the mechanisms in terms of inflammation, oxidative stress, myocardial fibrosis, mitochondrial function, epicardial lipids, endothelial function, insulin resistance, cardiac hydrogen and sodium exchange, and autophagy.
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Affiliation(s)
- Zhicheng Gao
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Jiaqi Bao
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Yilan Hu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Junjie Tu
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
| | - Lifang Ye
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
| | - Lihong Wang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, People’s Republic of China
- Heart Center, Department of Cardiovascular Medicine, Zhejiang Provincial People’s Hospital (Affiliated People’s Hospital), Hangzhou Medical College, Hangzhou, Zhejiang, China
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18
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SGLT-2 Inhibitors in Cancer Treatment-Mechanisms of Action and Emerging New Perspectives. Cancers (Basel) 2022; 14:cancers14235811. [PMID: 36497303 PMCID: PMC9738342 DOI: 10.3390/cancers14235811] [Citation(s) in RCA: 46] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 11/11/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
A new group of antidiabetic drugs, sodium-glucose cotransporter 2 inhibitors (SGLT-2 inhibitors), have recently been shown to have anticancer effects and their expression has been confirmed in many cancer cell lines. Given the metabolic reprogramming of these cells in a glucose-based model, the ability of SGLT-2 inhibitors to block the glucose uptake by cancer cells appears to be an attractive therapeutic approach. In addition to tumour cells, SGLT-2s are only found in the proximal tubules in the kidneys. Furthermore, as numerous clinical trials have shown, the use of SGLT-2 inhibitors is well-tolerated and safe in patients with diabetes and/or heart failure. In vitro cell culture studies and preclinical in vivo studies have confirmed that SGLT-2 inhibitors exhibit antiproliferative effects on certain types of cancer. However, the mechanisms of this action remain unclear. Even in those tumour cell types in which SGLT-2 is present, there is sometimes an SGLT-2-independent mechanism of anticancer action of this group of drugs. This article presents the current state of knowledge of the potential mechanisms of the anticancer action of SGLT-2 inhibitors and their possible future application in clinical oncology.
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19
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Tian L, Ai S, zheng H, Yang H, Zhou M, Tang J, Liu W, Zhao W, Wang Y. Cardiovascular and renal outcomes with sodium glucose co-transporter 2 inhibitors in patients with type 2 diabetes mellitus: A system review and network meta-analysis. Front Pharmacol 2022; 13:986186. [PMID: 36506550 PMCID: PMC9731650 DOI: 10.3389/fphar.2022.986186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Accepted: 11/02/2022] [Indexed: 11/25/2022] Open
Abstract
Cardiovascular and renal impairment are the most common complications of type 2 diabetes mellitus (T2DM). As an emerging class of glucose-lowing agents sodium glucose co-transporter 2 (SGLT2), possesses beneficial effects on cardiovascular and renal outcomes in patients with T2DM. The aim of this study is to assess the efficacy of different SGLT2 inhibitors for cardiovascular and renal outcomes for patients with T2DM when compared with placebo. We performed a systematic search of PubMed, Embase, and the Cochrane library from inception through November 2021. Randomized clinical trials enrolling participants with T2DM were included, in which SGLT2 inhibitors were compared with each other or placebo. The primary outcomes including all-caused mortality, Cardiovascular outcomes (cardiovascular mortality, hospitalization for heart failure), and the renal composite outcomes (worsening persistent microalbuminuria or macroalbuminuria, new or worsening chronic kidney disease, doubling of serum creatinine, end-stage renal disease, renal transplant, or renal death). The data for the outcomes were pooled and recorded as Hazard rations (HRs) with 95% confidence intervals (CLs). Two researcher independently screened the trials and drawn the data. Ten trials enrolling 68,723 patients were included. Compared with placebo groups, Canagliflozin [HR, 0.85 (95%CI, 0.75-0.98)], ertugliflozin [HR, 0.93 (95%CI, 0.78-1.11)], and sotagliflozin [HR, 0.94 (95%CI, 0.79-1.12)] were associated with a reduction in all-cause mortality. Canagliflozin [HR, 0.84 (95%CI, 0.72-0.97)], dapagliflozin [HR, 0.88 (95%CI, 0.79-0.99)], empagliflozin [HR, 0.62 (95%CI, 0.49-0.78)], ertugliflozin [HR, 0.92 (95%CI, 0.77-1.10)], and sotagliflozin [HR, 0.88 (95%CI, 0.73-1.06)] were associated with a reduction in cardiovascular mortality; Canagliflozin [HR, 0.64 (95%CI, 0.53-0.77)], dapagliflozin [HR, 0.71 (95%CI, 0.63-0.81)], empagliflozin [HR, 0.65 (95%CI, 0.50-0.85)], ertugliflozin [HR, 0.70 (95%CI, 0.54-0.90)], and sotagliflozin [HR, 0.66 (95%CI, 0.56-0.77)] were associated with a reduction in hospitalization for heart failure. Dapagliflozin [HR, 0.55 (95%CI, 0.47-0.63)], Empagliflozin [HR, 0.54 (95%CI, 0.39-0.74)], canagliflozin [HR, 0.64 (95%CI, 0.54-0.75)], sotagliflozin [HR, 0.71 (95%CI, 0.46-1.09)], and ertugliflozin [HR, 0.81 (95%CI, 0.63-1.04)] were associated with a reduction in the renal composite outcome. All SGLT2 inhibitors showed a reduction in cardiovascular mortality, hospitalization for heart failure, renal composite outcomes and all-cause mortality. Canagliflozin and empagliflozin seemed to have the same efficacy in reducing hospitalization for heart failure, but empagliflozin had advantage in reducing cardiovascular mortality, whereas dapagliflozin most likely showed the best renal composite outcomes.
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Affiliation(s)
- Lei Tian
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Sinan Ai
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Huijuan zheng
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Hanwen Yang
- China-Japan Friendship Hospital, Beijing, China
| | - Mengqi Zhou
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Jingyi Tang
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China
| | - Weijing Liu
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China,*Correspondence: Weijing Liu, ; Wenjing Zhao, ; Yaoxian Wang,
| | - Wenjing Zhao
- Department of Nephrology, Beijing Hospital of Traditional Chinese Medicine, Capital Medical University, Beijing, China,*Correspondence: Weijing Liu, ; Wenjing Zhao, ; Yaoxian Wang,
| | - Yaoxian Wang
- Renal Research Institution of Beijing University of Chinese Medicine, Key Laboratory of Chinese Internal Medicine of Ministry of Education and Beijing, Dongzhimen Hospital Affiliated to Beijing University of Chinese Medicine, Beijing, China,*Correspondence: Weijing Liu, ; Wenjing Zhao, ; Yaoxian Wang,
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Gao J, Xue G, Zhan G, Wang X, Li J, Yang X, Xia Y. Benefits of SGLT2 inhibitors in arrhythmias. Front Cardiovasc Med 2022; 9:1011429. [PMID: 36337862 PMCID: PMC9631490 DOI: 10.3389/fcvm.2022.1011429] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 10/04/2022] [Indexed: 09/25/2023] Open
Abstract
Some studies have shown that sodium-glucose cotransporter (SGLT) 2 inhibitors can definitively attenuate the occurrence of cardiovascular diseases such as heart failure (HF), dilated cardiomyopathy (DCM), and myocardial infarction. With the development of research, SGLT2 inhibitors can also reduce the risk of arrhythmias. So in this review, how SGLT2 inhibitors play a role in reducing the risk of arrhythmia from the perspective of electrical remodeling and structural remodeling are explored and then the possible mechanisms are discussed. Specifically, we focus on the role of SGLT2 inhibitors in Na+ and Ca2 + homeostasis and the transients of Na+ and Ca2 +, which could affect electrical remodeling and then lead to arrythmia. We also discuss the protective role of SGLT2 inhibitors in structural remodeling from the perspective of fibrosis, inflammation, oxidative stress, and apoptosis. Ultimately, it is clear that SGLT2 inhibitors have significant benefits on cardiovascular diseases such as HF, myocardial hypertrophy and myocardial infarction. It can be expected that SGLT2 inhibitors can reduce the risk of arrhythmia.
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Affiliation(s)
| | | | | | | | | | | | - Yunlong Xia
- Department of Cardiology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, China
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21
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Elrakaybi A, Laubner K, Zhou Q, Hug MJ, Seufert J. Cardiovascular protection by SGLT2 inhibitors - Do anti-inflammatory mechanisms play a role? Mol Metab 2022; 64:101549. [PMID: 35863639 PMCID: PMC9352970 DOI: 10.1016/j.molmet.2022.101549] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/04/2022] [Accepted: 07/12/2022] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Metabolic syndrome and related metabolic disturbances represent a state of low-grade inflammation, which accelerates insulin resistance, type 2 diabetes (T2D) and cardiovascular disease (CVD) progression. Among antidiabetic medications, sodium glucose co-transporter (SGLT) 2 inhibitors are the only agents which showed remarkable reductions in heart failure (HF) hospitalizations and major cardiovascular endpoints (MACE) as well as renal endpoints regardless of diabetes status in large randomized clinical outcome trials (RCTs). Although the exact mechanisms underlying these benefits are yet to be established, growing evidence suggests that modulating inflammation by SGLT2 inhibitors may play a key role. SCOPE OF REVIEW In this manuscript, we summarize the current knowledge on anti-inflammatory effects of SGLT2 inhibitors as one of the mechanisms potentially mediating their cardiovascular (CV) benefits. We introduce the different metabolic and systemic actions mediated by these agents which could mitigate inflammation, and further present the signalling pathways potentially responsible for their proposed direct anti-inflammatory effects. We also discuss controversies surrounding some of these mechanisms. MAJOR CONCLUSIONS SGLT2 inhibitors are promising anti-inflammatory agents by acting either indirectly via improving metabolism and reducing stress conditions or via direct modulation of inflammatory signalling pathways. These effects were achieved, to a great extent, in a glucose-independent manner which established their clinical use in HF patients with and without diabetes.
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Affiliation(s)
- Asmaa Elrakaybi
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Centre - University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; Department of Clinical Pharmacy, Ain Shams University, 11566 Cairo, Egypt
| | - Katharina Laubner
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Centre - University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany
| | - Qian Zhou
- Department of Cardiology and Angiology I, Heart Centre, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany; Department of Cardiology, University Hospital Basel, 4031 Basel, Switzerland
| | - Martin J Hug
- Pharmacy, Medical Centre - University of Freiburg, 79106 Freiburg, Germany
| | - Jochen Seufert
- Division of Endocrinology and Diabetology, Department of Medicine II, Medical Centre - University of Freiburg, Faculty of Medicine, University of Freiburg, 79106 Freiburg, Germany.
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22
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Gao YM, Feng ST, Wen Y, Tang TT, Wang B, Liu BC. Cardiorenal protection of SGLT2 inhibitors—Perspectives from metabolic reprogramming. EBioMedicine 2022; 83:104215. [PMID: 35973390 PMCID: PMC9396537 DOI: 10.1016/j.ebiom.2022.104215] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 07/12/2022] [Accepted: 07/29/2022] [Indexed: 11/23/2022] Open
Abstract
Sodium-glucose co-transporter 2 (SGLT2) inhibitors, initially developed as a novel class of anti-hyperglycaemic drugs, have been shown to significantly improve metabolic indicators and protect the kidneys and heart of patients with or without type 2 diabetes mellitus. The possible mechanisms mediating these unexpected cardiorenal benefits are being extensively investigated because they cannot solely be attributed to improvements in glycaemic control. Notably, emerging data indicate that metabolic reprogramming is involved in the progression of cardiorenal metabolic diseases. SGLT2 inhibitors reprogram systemic metabolism to a fasting-like metabolic paradigm, involving the metabolic switch from carbohydrates to other energetic substrates and regulation of the related nutrient-sensing pathways, which might explain some of their cardiorenal protective effects. In this review, we will focus on the current understanding of cardiorenal protection by SGLT2 inhibitors, specifically its relevance to metabolic reprogramming.
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23
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KHAKDE S, JAWAID H, YASMIN F, BINTE ALI M, REHMAN A. Is there a paradigm shift in preventing diabetic heart failure? A review of SGLT2 inhibitors. Minerva Endocrinol (Torino) 2022; 47:344-357. [DOI: 10.23736/s2724-6507.20.03221-6] [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: 11/08/2022]
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24
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Wu J, Liu Y, Wei X, Zhang X, Ye Y, Li W, Su X. Antiarrhythmic effects and mechanisms of sodium-glucose cotransporter 2 inhibitors: A mini review. Front Cardiovasc Med 2022; 9:915455. [PMID: 36003915 PMCID: PMC9393294 DOI: 10.3389/fcvm.2022.915455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 07/14/2022] [Indexed: 11/13/2022] Open
Abstract
Sodium-glucose cotransporter 2 inhibitors (SGLT2i) are a new type of oral hypoglycaemic agent with good cardiovascular protective effects. There are several lines of clinical evidence suggest that SGLT2i can significantly reduce the risks of heart failure, cardiovascular death, and delay the progression of chronic kidney disease. In addition, recent basic and clinical studies have also reported that SGLT2i also has good anti-arrhythmic effects. However, the exact mechanism is poorly understood. The aim of this review is to summarize recent clinical findings, studies of laboratory animals, and related study about this aspect of the antiarrhythmic effects of SGLT2i, to further explore its underlying mechanisms, safety, and prospects for clinical applications of it.
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Affiliation(s)
- Jinchun Wu
- Department of Cardiology, Qinghai Provincial People's Hospital, Xining, China
- *Correspondence: Jinchun Wu
| | - Yanmin Liu
- Department of Cardiology, Qinghai Provincial People's Hospital, Xining, China
| | - Xiaojuan Wei
- Department of Cardiology, Qinghai Provincial People's Hospital, Xining, China
| | - Xiaofei Zhang
- Department of Cardiology, Qinghai Provincial People's Hospital, Xining, China
| | - Yi Ye
- Graduate School of Qinghai University, Qinghai University, Xining, China
| | - Wei Li
- Department of Cardiology, Qinghai Provincial People's Hospital, Xining, China
| | - Xiaoling Su
- Department of Cardiology, Qinghai Provincial People's Hospital, Xining, China
- Xiaoling Su
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25
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Voorrips SN, Saucedo-Orozco H, Sánchez-Aguilera PI, De Boer RA, Van der Meer P, Westenbrink BD. Could SGLT2 Inhibitors Improve Exercise Intolerance in Chronic Heart Failure? Int J Mol Sci 2022; 23:8631. [PMID: 35955784 PMCID: PMC9369142 DOI: 10.3390/ijms23158631] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 12/04/2022] Open
Abstract
Despite the constant improvement of therapeutical options, heart failure (HF) remains associated with high mortality and morbidity. While new developments in guideline-recommended therapies can prolong survival and postpone HF hospitalizations, impaired exercise capacity remains one of the most debilitating symptoms of HF. Exercise intolerance in HF is multifactorial in origin, as the underlying cardiovascular pathology and reactive changes in skeletal muscle composition and metabolism both contribute. Recently, sodium-related glucose transporter 2 (SGLT2) inhibitors were found to improve cardiovascular outcomes significantly. Whilst much effort has been devoted to untangling the mechanisms responsible for these cardiovascular benefits of SGLT2 inhibitors, little is known about the effect of SGLT2 inhibitors on exercise performance in HF. This review provides an overview of the pathophysiological mechanisms that are responsible for exercise intolerance in HF, elaborates on the potential SGLT2-inhibitor-mediated effects on these phenomena, and provides an up-to-date overview of existing studies on the effect of SGLT2 inhibitors on clinical outcome parameters that are relevant to the assessment of exercise capacity. Finally, current gaps in the evidence and potential future perspectives on the effects of SGLT2 inhibitors on exercise intolerance in chronic HF are discussed.
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Affiliation(s)
- Suzanne N. Voorrips
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (H.S.-O.); (P.I.S.-A.); (R.A.D.B.); (P.V.d.M.)
| | | | | | | | | | - B. Daan Westenbrink
- Department of Cardiology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; (H.S.-O.); (P.I.S.-A.); (R.A.D.B.); (P.V.d.M.)
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26
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Yin Z, Zheng H, Guo Z. Effect of Sodium-Glucose Co-transporter Protein 2 Inhibitors on Arrhythmia in Heart Failure Patients With or Without Type 2 Diabetes: A Meta-Analysis of Randomized Controlled Trials. Front Cardiovasc Med 2022; 9:902923. [PMID: 35665272 PMCID: PMC9157597 DOI: 10.3389/fcvm.2022.902923] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 05/04/2022] [Indexed: 01/10/2023] Open
Abstract
Aim Arrhythmic events such as atrial fibrillation (AF) are tightly associated with an increased risk of heart failure (HF). Previous studies have shown inconsistent results regarding the association between sodium-glucose co-transporter 2 inhibitors (SGLT2i) and the risk of arrhythmia. The purpose of this study was to investigate the association of SGLT2i treatment with arrhythmia outcomes in clinical trials of patients with HF. Methods We searched Embase, PubMed, Web of Science, Medline, The Cochrane Library, and JAMA databases to identify appropriate randomized controlled trials (RCTs) of SGLT2i interventions. Endpoint outcomes included AF, atrial flutter (AFL), AF/AFL, ventricular fibrillation (VF), ventricular tachycardia (VT), VF/VT, and bradycardia. A random-effects model was used for the meta-analysis of all outcomes. The risk of bias and quality of evidence was assessed by using the Cochrane tool and assessment framework. Results Out of 1,725 citations, 9 trials were included in this study, with follow-up from 4 weeks to 52 weeks for 10,344 participants (mean age 68.27 years; 69.62% of participants were men). Compared with placebo, SGLT2i reduced the incidence of AF by 37% [ratio risk (RR) 0.63; 95% confidence interval (CI) 0.45–0.87; p < 0.05] and AF/AFL by 34% (RR 0.66; 95% CI 0.49–0.90; p < 0.05). Conclusions SGLT2i can reduce the risk of cardiac arrhythmias, particularly the AF. Our study provides strong evidence for recommending the use of SGLT2i in patients with HF. Systematic Review Registration PROSPERO, identifier: CRD42022296696.
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Affiliation(s)
- Ziwei Yin
- Department of Cardiology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Huizhen Zheng
- Department of Cardiology, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, China
| | - Zhihua Guo
- College of Chinese Medicine, Hunan University of Chinese Medicine, Changsha, China
- *Correspondence: Zhihua Guo
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27
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Nikolaou PE, Mylonas N, Makridakis M, Makrecka-Kuka M, Iliou A, Zerikiotis S, Efentakis P, Kampoukos S, Kostomitsopoulos N, Vilskersts R, Ikonomidis I, Lambadiari V, Zuurbier CJ, Latosinska A, Vlahou A, Dimitriadis G, Iliodromitis EK, Andreadou I. Cardioprotection by selective SGLT-2 inhibitors in a non-diabetic mouse model of myocardial ischemia/reperfusion injury: a class or a drug effect? Basic Res Cardiol 2022; 117:27. [PMID: 35581445 DOI: 10.1007/s00395-022-00934-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 05/04/2022] [Accepted: 05/04/2022] [Indexed: 02/08/2023]
Abstract
Major clinical trials with sodium glucose co-transporter-2 inhibitors (SGLT-2i) exhibit protective effects against heart failure events, whereas inconsistencies regarding the cardiovascular death outcomes are observed. Therefore, we aimed to compare the selective SGLT-2i empagliflozin (EMPA), dapagliflozin (DAPA) and ertugliflozin (ERTU) in terms of infarct size (IS) reduction and to reveal the cardioprotective mechanism in healthy non-diabetic mice. C57BL/6 mice randomly received vehicle, EMPA (10 mg/kg/day) and DAPA or ERTU orally at the stoichiometrically equivalent dose (SED) for 7 days. 24 h-glucose urinary excretion was determined to verify SGLT-2 inhibition. IS of the region at risk was measured after 30 min ischemia (I), and 120 min reperfusion (R). In a second series, the ischemic myocardium was collected (10th min of R) for shotgun proteomics and evaluation of the cardioprotective signaling. In a third series, we evaluated the oxidative phosphorylation capacity (OXPHOS) and the mitochondrial fatty acid oxidation capacity by measuring the respiratory rates. Finally, Stattic, the STAT-3 inhibitor and wortmannin were administered in both EMPA and DAPA groups to establish causal relationships in the mechanism of protection. EMPA, DAPA and ERTU at the SED led to similar SGLT-2 inhibition as inferred by the significant increase in glucose excretion. EMPA and DAPA but not ERTU reduced IS. EMPA preserved mitochondrial functionality in complex I&II linked oxidative phosphorylation. EMPA and DAPA treatment led to NF-kB, RISK, STAT-3 activation and the downstream apoptosis reduction coinciding with IS reduction. Stattic and wortmannin attenuated the cardioprotection afforded by EMPA and DAPA. Among several upstream mediators, fibroblast growth factor-2 (FGF-2) and caveolin-3 were increased by EMPA and DAPA treatment. ERTU reduced IS only when given at the double dose of the SED (20 mg/kg/day). Short-term EMPA and DAPA, but not ERTU administration at the SED reduce IS in healthy non-diabetic mice. Cardioprotection is not correlated to SGLT-2 inhibition, is STAT-3 and PI3K dependent and associated with increased FGF-2 and Cav-3 expression.
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Affiliation(s)
- Panagiota Efstathia Nikolaou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15771, Athens, Greece
| | - Nikolaos Mylonas
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15771, Athens, Greece
| | - Manousos Makridakis
- Centre of Systems Biology, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
| | | | - Aikaterini Iliou
- Faculty of Pharmacy, Section of Pharmaceutical Chemistry, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Stelios Zerikiotis
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15771, Athens, Greece
| | - Panagiotis Efentakis
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15771, Athens, Greece
| | - Stavros Kampoukos
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15771, Athens, Greece
| | - Nikolaos Kostomitsopoulos
- Centre of Clinical Experimental Surgery and Translational Research, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
| | | | - Ignatios Ikonomidis
- Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Vaia Lambadiari
- 2nd Department of Internal Medicine, Research Institute and Diabetes Center, National and Kapodistrian University of Athens, "Attikon" University Hospital, Athens, Greece
| | - Coert J Zuurbier
- Laboratory of Experimental Intensive Care and Anesthesiology, Department of Anesthesiology, Amsterdam Cardiovascular Sciences, Amsterdam Infection and Immunity, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | | | - Antonia Vlahou
- Centre of Systems Biology, Biomedical Research Foundation of the Academy of Athens (BRFAA), Athens, Greece
| | - George Dimitriadis
- 2nd Department of Internal Medicine, Research Institute and Diabetes Center, National and Kapodistrian University of Athens, "Attikon" University Hospital, Athens, Greece
| | | | - Ioanna Andreadou
- Laboratory of Pharmacology, Faculty of Pharmacy, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, 15771, Athens, Greece.
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28
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Li X, Flynn ER, do Carmo JM, Wang Z, da Silva AA, Mouton AJ, Omoto ACM, Hall ME, Hall JE. Direct Cardiac Actions of Sodium-Glucose Cotransporter 2 Inhibition Improve Mitochondrial Function and Attenuate Oxidative Stress in Pressure Overload-Induced Heart Failure. Front Cardiovasc Med 2022; 9:859253. [PMID: 35647080 PMCID: PMC9135142 DOI: 10.3389/fcvm.2022.859253] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 04/15/2022] [Indexed: 12/21/2022] Open
Abstract
Clinical trials showed that sodium-glucose cotransporter 2 (SGLT2) inhibitors, a class of drugs developed for treating diabetes mellitus, improve prognosis of patients with heart failure (HF). However, the mechanisms for cardioprotection by SGLT2 inhibitors are still unclear. Mitochondrial dysfunction and oxidative stress play important roles in progression of HF. This study tested the hypothesis that empagliflozin (EMPA), a highly selective SGLT2 inhibitor, improves mitochondrial function and reduces reactive oxygen species (ROS) while enhancing cardiac performance through direct effects on the heart in a non-diabetic mouse model of HF induced by transverse aortic constriction (TAC). EMPA or vehicle was administered orally for 4 weeks starting 2 weeks post-TAC. EMPA treatment did not alter blood glucose or body weight but significantly attenuated TAC-induced cardiac dysfunction and ventricular remodeling. Impaired mitochondrial oxidative phosphorylation (OXPHOS) in failing hearts was significantly improved by EMPA. EMPA treatment also enhanced mitochondrial biogenesis and restored normal mitochondria morphology. Although TAC increased mitochondrial ROS and decreased endogenous antioxidants, EMPA markedly inhibited cardiac ROS production and upregulated expression of endogenous antioxidants. In addition, EMPA enhanced autophagy and decreased cardiac apoptosis in TAC-induced HF. Importantly, mitochondrial respiration significantly increased in ex vivo cardiac fibers after direct treatment with EMPA. Our results indicate that EMPA has direct effects on the heart, independently of reductions in blood glucose, to enhance mitochondrial function by upregulating mitochondrial biogenesis, enhancing OXPHOS, reducing ROS production, attenuating apoptosis, and increasing autophagy to improve overall cardiac function in a non-diabetic model of pressure overload-induced HF.
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Affiliation(s)
- Xuan Li
- Department of Physiology and Biophysics, Mississippi Center for Obesity Research, Mississippi Center for Heart Research, University of Mississippi Medical Center, Jackson, MS, United States
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Chang WT, Shih JY, Lin YW, Chen ZC, Kan WC, Lin TH, Hong CS. Dapagliflozin protects against doxorubicin-induced cardiotoxicity by restoring STAT3. Arch Toxicol 2022; 96:2021-2032. [PMID: 35438302 DOI: 10.1007/s00204-022-03298-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 03/31/2022] [Indexed: 01/02/2023]
Abstract
Doxorubicin (Dox), an effective therapy in different types of cancer, is known to exhibit cardiotoxic effects. Despite previous studies indicating the benefits of dapagliflozin (DAPA) in patients experiencing heart failure, it remains uncertain whether DAPA exerts a protective effect on Dox-induced cardiac dysfunction. Signal transducer and activator of transcription 3 (STAT3) participates in various mechanisms of cardioprotection. Herein, we aimed to investigate the effects of DAPA on Dox-induced cardiotoxicity and the role of STAT3. Sprague-Dawley rats were pretreated with oral DAPA for 6 weeks followed by Dox for 4 weeks. Sequential echocardiography was applied to assess cardiac function. For in vitro analysis, cardiomyocytes were treated with 10 μM DAPA and subsequently exposed to 1 μM Dox. The expression of reactive oxygen species- and apoptosis-related proteins was measured. Using STAT3 siRNA, we further examined the effects of STAT3 effect on DAPA-associated protection against Dox-induced apoptosis. In rats treated with Dox, DAPA significantly reduced cardiac fibrosis and improved cardiac function and hemodynamics. Additionally, DAPA effectively inhibited Dox-induced apoptosis and reactive oxygen species (ROS) in cardiomyocytes. Mechanistically, we showed that DAPA decreased cardiac expression of Bax and cleaved caspase 3 but increased Bcl-2 expression. DAPA also significantly rescued Dox-suppressed STAT3 expression. Conversely, knocking down STAT3 in cardiomyocytes reversed the DAPA-related protective effects on Dox-induced cell apoptosis and ROS. Collectively, our findings indicate that DAPA could be useful for preventing Dox-induced cardiotoxicity by restoring STAT3.
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Affiliation(s)
- Wei-Ting Chang
- Institute of Clinical Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan
- Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center, Tainan, Taiwan
- Department of Biotechnology, Southern Taiwan University of Science and Technology, Tainan, Taiwan
| | - Jhih-Yuan Shih
- Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center, Tainan, Taiwan
- Department of Health and Nutrition, Chia Nan University of Pharmacy and Science, Tainan, Taiwan
| | - Yu-Wen Lin
- Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center, Tainan, Taiwan
| | - Zhih-Cherng Chen
- Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center, Tainan, Taiwan
| | - Wei-Chih Kan
- Division of Nephrology, Department of Internal Medicine, Chi Mei Medical Center, 901, Zhonghua Road, Yongkang District, Tainan, Taiwan ROC.
- Department of Biological Science and Technology, Chung Hwa University of Medical Technology, Tainan, Taiwan.
| | - Tsung-Hsien Lin
- Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
- Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Chon-Seng Hong
- Division of Cardiology, Department of Internal Medicine, Chi-Mei Medical Center, Tainan, Taiwan
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Hernandez M, Sullivan RD, McCune ME, Reed GL, Gladysheva IP. Sodium-Glucose Cotransporter-2 Inhibitors Improve Heart Failure with Reduced Ejection Fraction Outcomes by Reducing Edema and Congestion. Diagnostics (Basel) 2022; 12:989. [PMID: 35454037 PMCID: PMC9024630 DOI: 10.3390/diagnostics12040989] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2022] [Revised: 03/30/2022] [Accepted: 04/12/2022] [Indexed: 02/07/2023] Open
Abstract
Pathological sodium-water retention or edema/congestion is a primary cause of heart failure (HF) decompensation, clinical symptoms, hospitalization, reduced quality of life, and premature mortality. Sodium-glucose cotransporter-2 inhibitors (SGLT-2i) based therapies reduce hospitalization due to HF, improve functional status, quality, and duration of life in patients with HF with reduced ejection fraction (HFrEF) independently of their glycemic status. The pathophysiologic mechanisms and molecular pathways responsible for the benefits of SGLT-2i in HFrEF remain inconclusive, but SGLT-2i may help HFrEF by normalizing salt-water homeostasis to prevent clinical edema/congestion. In HFrEF, edema and congestion are related to compromised cardiac function. Edema and congestion are further aggravated by renal and pulmonary abnormalities. Treatment of HFrEF patients with SGLT-2i enhances natriuresis/diuresis, improves cardiac function, and reduces natriuretic peptide plasma levels. In this review, we summarize current clinical research studies related to outcomes of SGLT-2i treatment in HFrEF with a specific focus on their contribution to relieving or preventing edema and congestion, slowing HF progression, and decreasing the rate of rehospitalization and cardiovascular mortality.
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Affiliation(s)
- Michelle Hernandez
- Department of Medicine, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ 85004, USA; (M.H.); (R.D.S.); (M.E.M.); (G.L.R.)
- School of Medicine, Universidad Autónoma de Guadalajara, Zapopan 45129, Mexico
| | - Ryan D. Sullivan
- Department of Medicine, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ 85004, USA; (M.H.); (R.D.S.); (M.E.M.); (G.L.R.)
| | - Mariana E. McCune
- Department of Medicine, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ 85004, USA; (M.H.); (R.D.S.); (M.E.M.); (G.L.R.)
| | - Guy L. Reed
- Department of Medicine, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ 85004, USA; (M.H.); (R.D.S.); (M.E.M.); (G.L.R.)
| | - Inna P. Gladysheva
- Department of Medicine, College of Medicine-Phoenix, University of Arizona, Phoenix, AZ 85004, USA; (M.H.); (R.D.S.); (M.E.M.); (G.L.R.)
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Salvatore T, Galiero R, Caturano A, Rinaldi L, Di Martino A, Albanese G, Di Salvo J, Epifani R, Marfella R, Docimo G, Lettieri M, Sardu C, Sasso FC. An Overview of the Cardiorenal Protective Mechanisms of SGLT2 Inhibitors. Int J Mol Sci 2022; 23:3651. [PMID: 35409011 PMCID: PMC8998569 DOI: 10.3390/ijms23073651] [Citation(s) in RCA: 92] [Impact Index Per Article: 46.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 02/04/2023] Open
Abstract
Sodium-glucose co-transporter 2 (SGLT2) inhibitors block glucose reabsorption in the renal proximal tubule, an insulin-independent mechanism that plays a critical role in glycemic regulation in diabetes. In addition to their glucose-lowering effects, SGLT2 inhibitors prevent both renal damage and the onset of chronic kidney disease and cardiovascular events, in particular heart failure with both reduced and preserved ejection fraction. These unexpected benefits prompted changes in treatment guidelines and scientific interest in the underlying mechanisms. Aside from the target effects of SGLT2 inhibition, a wide spectrum of beneficial actions is described for the kidney and the heart, even though the cardiac tissue does not express SGLT2 channels. Correction of cardiorenal risk factors, metabolic adjustments ameliorating myocardial substrate utilization, and optimization of ventricular loading conditions through effects on diuresis, natriuresis, and vascular function appear to be the main underlying mechanisms for the observed cardiorenal protection. Additional clinical advantages associated with using SGLT2 inhibitors are antifibrotic effects due to correction of inflammation and oxidative stress, modulation of mitochondrial function, and autophagy. Much research is required to understand the numerous and complex pathways involved in SGLT2 inhibition. This review summarizes the current known mechanisms of SGLT2-mediated cardiorenal protection.
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Affiliation(s)
- Teresa Salvatore
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, Via De Crecchio 7, 80138 Naples, Italy
| | - Raffaele Galiero
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Alfredo Caturano
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Luca Rinaldi
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Anna Di Martino
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Gaetana Albanese
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Jessica Di Salvo
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Raffaella Epifani
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Raffaele Marfella
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
- Mediterrannea Cardiocentro, 80122 Napoli, Italy
| | - Giovanni Docimo
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Miriam Lettieri
- Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, 3.31 Core Technology Facility, 46 Grafton Street, Manchester M13 9NT, UK
| | - Celestino Sardu
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
| | - Ferdinando Carlo Sasso
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, 80138 Naples, Italy
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Chrysant SG, Chrysant GS. Beneficial cardiovascular and remodeling effects of SGLT2 inhibitors: pathophysiologic mechanisms. Expert Rev Cardiovasc Ther 2022; 20:223-232. [PMID: 35320057 DOI: 10.1080/14779072.2022.2057949] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
INTRODUCTION The intent of this paper is to review the data regarding the multipotential effects of the sodium-glucose cotransporter 2 (SGLT 2) inhibitors, their cardiovascular protective effects, and their mechanism of action. AREAS COVERED The SGLT2 inhibitors exert their beneficial antidiabetic and cardioprotective effects through increased glucose excretion from the kidneys, blood pressure and weight lowering, vasodilation and other potential beneficial effects. They have been used for the treatment of patients with type 2 diabetes mellitus (T2DM) as well as in patients with cardiovascular disease (CVD), coronary artery disease (CAD),and heart failure with reduced ejection fraction (HFrEF) and heart failure with preserved ejection fraction (HFpEF). In order to get a better understanding of their mechanism of action for their multiple cardiovascular protective effects, a Medline search of the English language literature was conducted between 2015 and February 2022 and 46 pertinent papers were selected. EXPERT OPINION The analysis of data clearly demonstrated that the use of the SGLT2 inhibitors besides their antidiabetic effects, provide additional protection against CVD, CAD, and HFrEF and HFpEF, and death, but not stroke, in both diabetic and non-diabetic patients. Therefore, they should be preferably used for the treatment of patients with T2DM with preexisting CVD, CAD, and HFrEF and HFpEF.
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Affiliation(s)
- Steven G Chrysant
- Department of Cardiology, University of Oklahoma Health Sciences Center, Oklahoma City, USA
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Abstract
Sodium-glucose cotransporter-2 (SGLT-2) inhibitors (empagliflozin, canagliflozin, dapagliflozin, and ertugliflozin) are a new class of heart failure medications that have previously been exclusively utilized in the management of type 2 diabetes mellitus (T2DM). The rationale for using SGLT-2 inhibitors in patients with heart failure has stemmed from recent landmark clinical trials in T2DM in which reductions in mortality and hospitalization for heart failure were first observed. On the basis of these robust outcomes, empagliflozin has further been evaluated in heart failure with reduced ejection fraction (HFrEF) and preserved ejection fraction and dapagliflozin solely in the management of HFrEF. While cardiovascular outcomes among each agent vary depending on the patient population, updates among both the American and European guidelines have included SGLT-2 inhibitors as pillars of therapy. The exact mechanisms for how SGLT-2 inhibitors are beneficial in heart failure are unknown, but current hypotheses include multiple metabolic and hemodynamic mechanisms. The purpose of this review is to summarize available literature focusing on the use of the SGLT-2 inhibitors as adjunctive therapy in heart failure, as well as evaluate mechanisms for heart failure benefit, adverse effects, and practical considerations for using these agents in the clinical setting.
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Wichaiyo S, Saengklub N. Alterations of sodium-hydrogen exchanger 1 function in response to SGLT2 inhibitors: what is the evidence? Heart Fail Rev 2022; 27:1973-1990. [PMID: 35179683 DOI: 10.1007/s10741-022-10220-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 02/07/2023]
Abstract
This review summarizes and describes the current evidence addressing how sodium-glucose cotransporter 2 (SGLT2) inhibitors alter the function of sodium-hydrogen exchanger 1 (NHE-1), in association with their protective effects against adverse cardiovascular events. In the heart, SGLT2 inhibitors modulate the function of NHE-1 (either by direct inhibition or indirect attenuation of protein expression), which promotes cardiac contraction and an enhanced energy supply, in association with improved mitochondrial function, reduced inflammation/oxidative/endoplasmic reticulum stress, and attenuated fibrosis and apoptotic/autophagic cell death. The vasodilating effect of SGLT2 inhibitors has also been proposed due to NHE-1 inhibition. Moreover, platelet-expressed NHE-1 might serve as a target for SGLT2 inhibitors, since these drugs and selective NHE-1 inhibitors produce comparable activity against adenosine diphosphate-stimulated platelet activation. Overall, it is promising that the modulation of the functions of NHE-1 on the heart, blood vessels, and platelets may act as a contributing pathway for the cardiovascular benefits of SGLT2 inhibitors in diabetes and heart failure.
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Affiliation(s)
- Surasak Wichaiyo
- Department of Pharmacology, Faculty of Pharmacy, Mahidol University, 447 Sri-Ayuthaya Road, Rajathevi, Bangkok, 10400, Thailand. .,Centre of Biopharmaceutical Science for Healthy Ageing, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.
| | - Nakkawee Saengklub
- Centre of Biopharmaceutical Science for Healthy Ageing, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand.,Department of Physiology, Faculty of Pharmacy, Mahidol University, Bangkok, Thailand
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Chung YJ, Park KC, Tokar S, Eykyn TR, Fuller W, Pavlovic D, Swietach P, Shattock MJ. Off-target effects of sodium-glucose co-transporter 2 blockers: empagliflozin does not inhibit Na+/H+ exchanger-1 or lower [Na+]i in the heart. Cardiovasc Res 2021; 117:2794-2806. [PMID: 33135077 PMCID: PMC8683707 DOI: 10.1093/cvr/cvaa323] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/28/2020] [Accepted: 11/02/2020] [Indexed: 12/17/2022] Open
Abstract
AIMS Emipagliflozin (EMPA) is a potent inhibitor of the renal sodium-glucose co-transporter 2 (SGLT2) and an effective treatment for type-2 diabetes. In patients with diabetes and heart failure, EMPA has cardioprotective effects independent of improved glycaemic control, despite SGLT2 not being expressed in the heart. A number of non-canonical mechanisms have been proposed to explain these cardiac effects, most notably an inhibitory action on cardiac Na+/H+ exchanger 1 (NHE1), causing a reduction in intracellular [Na+] ([Na+]i). However, at resting intracellular pH (pHi), NHE1 activity is very low and its pharmacological inhibition is not expected to meaningfully alter steady-state [Na+]i. We re-evaluate this putative EMPA target by measuring cardiac NHE1 activity. METHODS AND RESULTS The effect of EMPA on NHE1 activity was tested in isolated rat ventricular cardiomyocytes from measurements of pHi recovery following an ammonium pre-pulse manoeuvre, using cSNARF1 fluorescence imaging. Whereas 10 µM cariporide produced near-complete inhibition, there was no evidence for NHE1 inhibition with EMPA treatment (1, 3, 10, or 30 µM). Intracellular acidification by acetate-superfusion evoked NHE1 activity and raised [Na+]i, reported by sodium binding benzofuran isophthalate (SBFI) fluorescence, but EMPA did not ablate this rise. EMPA (10 µM) also had no significant effect on the rate of cytoplasmic [Na+]i rise upon superfusion of Na+-depleted cells with Na+-containing buffers. In Langendorff-perfused mouse, rat and guinea pig hearts, EMPA did not affect [Na+]i at baseline nor pHi recovery following acute acidosis, as measured by 23Na triple quantum filtered NMR and 31P NMR, respectively. CONCLUSIONS Our findings indicate that cardiac NHE1 activity is not inhibited by EMPA (or other SGLT2i's) and EMPA has no effect on [Na+]i over a wide range of concentrations, including the therapeutic dose. Thus, the beneficial effects of SGLT2i's in failing hearts should not be interpreted in terms of actions on myocardial NHE1 or intracellular [Na+].
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Affiliation(s)
- Yu Jin Chung
- British Heart Foundation Centre of Research Excellence, King’s College London, The Rayne Institute, St Thomas’ Hospital, Lambeth Palace Road, London SE1 7EH, UK
| | - Kyung Chan Park
- Department of Physiology, Anatomy and Genetics, Parks Road, Oxford, OX1 3PT, UK
| | - Sergiy Tokar
- British Heart Foundation Centre of Research Excellence, King’s College London, The Rayne Institute, St Thomas’ Hospital, Lambeth Palace Road, London SE1 7EH, UK
| | - Thomas R Eykyn
- British Heart Foundation Centre of Research Excellence, King’s College London, The Rayne Institute, St Thomas’ Hospital, Lambeth Palace Road, London SE1 7EH, UK
- School of Biomedical Engineering and Imaging Sciences, King’s College London, The Rayne Institute, St Thomas' Hospital, Lambeth Palace Road, London SE1 7EH, UK
| | - William Fuller
- Institute of Cardiovascular & Medical Sciences, Sir James Black Building, University of Glasgow, University Avenue, Glasgow G12 8QQ, UK
| | - Davor Pavlovic
- Institute for Cardiovascular Sciences, University of Birmingham, Wolfson Drive, Birmingham B15 2TT, UK
| | - Pawel Swietach
- Department of Physiology, Anatomy and Genetics, Parks Road, Oxford, OX1 3PT, UK
| | - Michael J Shattock
- British Heart Foundation Centre of Research Excellence, King’s College London, The Rayne Institute, St Thomas’ Hospital, Lambeth Palace Road, London SE1 7EH, UK
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Bao L, Gao X, Xie K, Li Y. Is There a Diabetes-Kidney-Heart Continuum? Perspectives From the Results of the Cardiovascular and Renal Outcome Clinical Trials With SGLT2 Inhibitors. Front Cardiovasc Med 2021; 8:716083. [PMID: 34631819 PMCID: PMC8494970 DOI: 10.3389/fcvm.2021.716083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/23/2021] [Indexed: 01/10/2023] Open
Abstract
Heart failure is associated with a substantial risk of mortality and morbidity. Findings from recent cardiovascular outcome trials have shown promise for sodium-glucose cotransporter-2 (SGLT2) inhibitors in preventing heart failure in patients with type 2 diabetes mellitus (T2DM). Notably, the benefits of SGLT2 inhibitors were consistent despite the presence of risk factors like atherosclerosis. Increasing evidence suggests that SGLT2 inhibitors may confer their cardioprotective effects through multiple mechanisms, ranging from improving cardiac and vascular performance to metabolism. The reduction of heart failure risk by SGLT2 inhibitors may also be attributed to the preservation of renal function. Indeed, renal insufficiency is a frequent comorbidity of patients with heart failure and T2DM; hence, the natriuretic and kidney protective effects offered by SGLT2 inhibitors may contribute to limiting adverse cardiac outcomes. In this article, we discuss the latest findings from the cardiovascular and renal outcome trials, paying special attention to the interlink between heart and kidney function, and how effective treatment of heart failure-irrespective of T2DM diagnosis-may require agents that offer both cardiac and renal protection.
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Affiliation(s)
- Liwen Bao
- Department of Cardiology, Fuden University Affiliated Huashan Hospital, Shanghai, China
| | - Xiufang Gao
- Department of Cardiology, Fuden University Affiliated Huashan Hospital, Shanghai, China
| | - Kun Xie
- Department of Cardiology, Fuden University Affiliated Huashan Hospital, Shanghai, China
| | - Yong Li
- Department of Cardiology, Fuden University Affiliated Huashan Hospital, Shanghai, China
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Pabel S, Hamdani N, Luedde M, Sossalla S. SGLT2 Inhibitors and Their Mode of Action in Heart Failure-Has the Mystery Been Unravelled? Curr Heart Fail Rep 2021; 18:315-328. [PMID: 34523061 PMCID: PMC8484236 DOI: 10.1007/s11897-021-00529-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/09/2021] [Indexed: 12/12/2022]
Abstract
PURPOSE OF REVIEW SGLT2 inhibitors (SGLT2i) are new drugs for patients with heart failure (HF) irrespective of diabetes. However, the mechanisms of SGLT2i in HF remain elusive. This article discusses the current clinical evidence for using SGLT2i in different types of heart failure and provides an overview about the possible underlying mechanisms. RECENT FINDINGS Clinical and basic data strongly support and extend the use of SGLT2i in HF. Improvement of conventional secondary risk factors is unlikely to explain the prognostic benefits of these drugs in HF. However, different multidirectional mechanisms of SGLT2i could improve HF status including volume regulation, cardiorenal mechanisms, metabolic effects, improved cardiac remodelling, direct effects on cardiac contractility and ion-homeostasis, reduction of inflammation and oxidative stress as well as an impact on autophagy and adipokines. Further translational studies are needed to determine the mechanisms of SGLT2i in HF. However, basic and clinical evidence encourage the use of SGLT2i in HFrEF and possibly HFpEF.
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Affiliation(s)
- Steffen Pabel
- Department of Internal Medicine II, University Medical Centre Regensburg, Regensburg, Germany
| | - Nazha Hamdani
- Department of Molecular and Experimental Cardiology and Department of Cardiology, St. Josef-Hospital, Ruhr University Bochum, Bochum, Germany
| | - Mark Luedde
- Department of Cardiology and Angiology, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Samuel Sossalla
- Department of Internal Medicine II, University Medical Centre Regensburg, Regensburg, Germany. .,Clinic for Cardiology and Pneumology, Georg-August University Göttingen, and DZHK (German Centre for Cardiovascular Research), partner site Göttingen, Göttingen, Germany.
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Sayour AA, Ruppert M, Oláh A, Benke K, Barta BA, Zsáry E, Merkely B, Radovits T. Effects of SGLT2 Inhibitors beyond Glycemic Control-Focus on Myocardial SGLT1. Int J Mol Sci 2021; 22:9852. [PMID: 34576016 PMCID: PMC8468664 DOI: 10.3390/ijms22189852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 12/26/2022] Open
Abstract
Selective sodium-glucose cotransporter 2 (SGLT2) inhibitors reduced the risk of hospitalization for heart failure in patients with or without type 2 diabetes (T2DM) in large-scale clinical trials. The exact mechanism of action is currently unclear. The dual SGLT1/2 inhibitor sotagliflozin not only reduced hospitalization for HF in patients with T2DM, but also lowered the risk of myocardial infarction and stroke, suggesting a possible additional benefit related to SGLT1 inhibition. In fact, several preclinical studies suggest that SGLT1 plays an important role in cardiac pathophysiological processes. In this review, our aim is to establish the clinical significance of myocardial SGLT1 inhibition through reviewing basic research studies in the context of SGLT2 inhibitor trials.
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Affiliation(s)
- Alex Ali Sayour
- Heart and Vascular Center, Department of Cardiology, Semmelweis University, Városmajor str. 68, H-1122 Budapest, Hungary; (M.R.); (A.O.); (K.B.); (B.A.B.); (E.Z.); (B.M.); (T.R.)
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Trum M, Riechel J, Wagner S. Cardioprotection by SGLT2 Inhibitors-Does It All Come Down to Na +? Int J Mol Sci 2021; 22:ijms22157976. [PMID: 34360742 PMCID: PMC8347698 DOI: 10.3390/ijms22157976] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 07/22/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022] Open
Abstract
Sodium-glucose co-transporter 2 inhibitors (SGLT2i) are emerging as a new treatment strategy for heart failure with reduced ejection fraction (HFrEF) and—depending on the wistfully awaited results of two clinical trials (DELIVER and EMPEROR-Preserved)—may be the first drug class to improve cardiovascular outcomes in patients suffering from heart failure with preserved ejection fraction (HFpEF). Proposed mechanisms of action of this class of drugs are diverse and include metabolic and hemodynamic effects as well as effects on inflammation, neurohumoral activation, and intracellular ion homeostasis. In this review we focus on the growing body of evidence for SGLT2i-mediated effects on cardiac intracellular Na+ as an upstream mechanism. Therefore, we will first give a short overview of physiological cardiomyocyte Na+ handling and its deterioration in heart failure. On this basis we discuss the salutary effects of SGLT2i on Na+ homeostasis by influencing NHE1 activity, late INa as well as CaMKII activity. Finally, we highlight the potential relevance of these effects for systolic and diastolic dysfunction as well as arrhythmogenesis.
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Liu J, Tian J, Sodhi K, Shapiro JI. The Na/K-ATPase Signaling and SGLT2 Inhibitor-Mediated Cardiorenal Protection: A Crossed Road? J Membr Biol 2021; 254:513-529. [PMID: 34297135 PMCID: PMC8595165 DOI: 10.1007/s00232-021-00192-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 07/06/2021] [Indexed: 12/17/2022]
Abstract
In different large-scale clinic outcome trials, sodium (Na+)/glucose co-transporter 2 (SGLT2) inhibitors showed profound cardiac- and renal-protective effects, making them revolutionary treatments for heart failure and kidney disease. Different theories are proposed according to the emerging protective effects other than the original purpose of glucose-lowering in diabetic patients. As the ATP-dependent primary ion transporter providing the Na+ gradient to drive other Na+-dependent transporters, the possible role of the sodium–potassium adenosine triphosphatase (Na/K-ATPase) as the primary ion transporter and its signaling function is not explored.
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Affiliation(s)
- Jiang Liu
- Department of Biomedical Sciences, JCE School of Medicine, Marshall University, Huntington, WV, USA.
| | - Jiang Tian
- Department of Biomedical Sciences, JCE School of Medicine, Marshall University, Huntington, WV, USA
| | - Komal Sodhi
- Department of Surgery, JCE School of Medicine, Marshall University, Huntington, WV, USA
| | - Joseph I Shapiro
- Departments of Medicine, JCE School of Medicine, Marshall University, Huntington, WV, USA
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Sympatholytic Mechanisms for the Beneficial Cardiovascular Effects of SGLT2 Inhibitors: A Research Hypothesis for Dapagliflozin's Effects in the Adrenal Gland. Int J Mol Sci 2021; 22:ijms22147684. [PMID: 34299304 PMCID: PMC8305388 DOI: 10.3390/ijms22147684] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2021] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 12/31/2022] Open
Abstract
Heart failure (HF) remains the leading cause of morbidity and death in the western world, and new therapeutic modalities are urgently needed to improve the lifespan and quality of life of HF patients. The sodium-glucose co-transporter-2 (SGLT2) inhibitors, originally developed and mainly indicated for diabetes mellitus treatment, have been increasingly shown to ameliorate heart disease, and specifically HF, in humans, regardless of diabetes co-existence. Indeed, dapagliflozin has been reported to reduce cardiovascular mortality and hospitalizations in patients with HF and reduced ejection fraction (HFrEF). This SGLT2 inhibitor demonstrates these benefits also in non-diabetic subjects, indicating that dapagliflozin's efficacy in HF is independent of blood glucose control. Evidence for the effectiveness of various SGLT2 inhibitors in providing cardiovascular benefits irrespective of their effects on blood glucose regulation have spurred the use of these agents in HFrEF treatment and resulted in FDA approvals for cardiovascular indications. The obvious question arising from all these studies is, of course, which molecular/pharmacological mechanisms underlie these cardiovascular benefits of the drugs in diabetics and non-diabetics alike. The fact that SGLT2 is not significantly expressed in cardiac myocytes (SGLT1 appears to be the dominant isoform) adds even greater perplexity to this answer. A variety of mechanisms have been proposed over the past few years and tested in cell and animal models and prominent among those is the potential for sympatholysis, i.e., reduction in sympathetic nervous system activity. The latter is known to be high in HF patients, contributing significantly to the morbidity and mortality of the disease. The present minireview first summarizes the current evidence in the literature supporting the notion that SGLT2 inhibitors, such as dapagliflozin and empagliflozin, exert sympatholysis, and also outlines the main putative underlying mechanisms for these sympatholytic effects. Then, we propose a novel hypothesis, centered on the adrenal medulla, for the sympatholytic effects specifically of dapagliflozin. Adrenal medulla is responsible for the production and secretion of almost the entire amount of circulating epinephrine and of a significant percentage of circulating norepinephrine in the human body. If proven true experimentally, this hypothesis, along with other emerging experimental evidence for sympatholytic effects in neurons, will shed new light on the pharmacological effects that mediate the cardiovascular benefits of SGLT2 inhibitor drugs, independently of their blood glucose-lowering effects.
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Shepard BD. The Sniffing Kidney: Roles for Renal Olfactory Receptors in Health and Disease. KIDNEY360 2021; 2:1056-1062. [PMID: 35373087 PMCID: PMC8791376 DOI: 10.34067/kid.0000712021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Accepted: 04/19/2021] [Indexed: 12/17/2022]
Abstract
AbstractOlfactory receptors (ORs) represent the largest gene family in the human genome. Despite their name, functions exist for these receptors outside of the nose. Among the tissues known to take advantage of OR signaling is the kidney. From mouse to man, the list of renal ORs continues to expand, and they have now been linked to a variety of processes involved in the maintenance of renal homeostasis, including the modulation of blood pressure, response to acidemia, and the development of diabetes. In this review, we highlight the recent progress made on the growing appreciation for renal ORs in physiology and pathophysiology.
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Correale M, Petroni R, Coiro S, Antohi EL, Monitillo F, Leone M, Triggiani M, Ishihara S, Dungen HD, Sarwar CMS, Memo M, Sabbah HN, Metra M, Butler J, Nodari S. Paradigm shift in heart failure treatment: are cardiologists ready to use gliflozins? Heart Fail Rev 2021; 27:1147-1163. [PMID: 34097173 DOI: 10.1007/s10741-021-10107-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/07/2021] [Indexed: 11/26/2022]
Abstract
Despite recent advances in chronic heart failure (HF) therapy, the prognosis of HF patients remains poor, with high rates of HF rehospitalizations and death in the early months after discharge. This emphasizes the need for incorporating novel HF drugs, beyond the current approach (that of modulating the neurohumoral response). Recently, new antidiabetic oral medications (sodium-glucose cotransporter 2 inhibitors (SGLT2i)) have been shown to improve prognosis in diabetic patients with previous cardiovascular (CV) events or high CV risk profile. Data from DAPA-HF study showed that dapaglifozin is associated with a significant reduction in mortality and HF hospitalization as compared with placebo regardless of diabetes status. Recently, results from EMPEROR-Reduced HF trial were consistent with DAPA-HF trial findings, showing significant beneficial effect associated with empagliflozin use in a high-risk HF population with markedly reduced ejection fraction. Results from the HF with preserved ejection fraction trials using these same agents are eagerly awaited. This review summarizes the evidence for the use of gliflozins in HF treatment.
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Affiliation(s)
- Michele Correale
- Cardiology Department, University Hospital Ospedali Riuniti, Foggia, Italy.
| | - Renata Petroni
- Department of Medicine, Di Lorenzo Clinic, Avezzano, Italy
- Cardiology, Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Stefano Coiro
- Cardiology Department, Santa Maria della Misericordia University Hospital, Perugia, Italy
| | - Elena-Laura Antohi
- ICCU, Emergency Institute for Cardiovascular Diseases "C.C. Iliescu", Bucharest, Romania
- The University for Medicine and Pharmacy "Carol Davila", Bucharest, Romania
| | - Francesco Monitillo
- Cardiology, Emergency Cardiology Unit, University Hospital Policlinico Bari, Bari, Italy
| | - Marta Leone
- Cardiology Department, Santissima Annunziata Hospital, Taranto, Italy
| | - Marco Triggiani
- Division of Cardiology, La Memoria" Hospital, Gavardo (Bs), Italy
| | - Shiro Ishihara
- Internal Medicine, Cardiology, and Intensive Care Unit, Nippon Medical School Musashi-Kosugi Hospital, Kawasaky, Japan
| | - Hans-Dirk Dungen
- Department of Internal Medicine-Cardiology, Charite' Universitäts Medizin, Berlin, Germany
| | - Chaudhry M S Sarwar
- Pulse Heart Institute, Spokane, WA, 99204, USA
- Stony Brook University, Stony Brook, NY, 11794, USA
| | - Maurizio Memo
- Section of Pharmacology, Department of Molecular and Translational Medicine, University of Brescia, Brescia, Italy
| | - Hani N Sabbah
- Department of Medicine, Division of Cardiovascular Medicine, Henry Ford Hospital, Detroit, MI, USA
| | - Marco Metra
- Cardiology Section, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
| | - Javed Butler
- Department of Medicine, University of Mississippi, Jackson, MS, USA
| | - Savina Nodari
- Cardiology Section, Department of Medical and Surgical Specialties, Radiological Sciences and Public Health, University of Brescia, Brescia, Italy
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Effects of SGLT2 Inhibitor on Ischemic Events Stemming From Atherosclerotic Coronary Diseases: A Systematic Review and Meta-analysis With Trial Sequential Analysis of Randomized Controlled Trials. J Cardiovasc Pharmacol 2021; 77:787-795. [PMID: 33843765 DOI: 10.1097/fjc.0000000000001018] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 03/04/2021] [Indexed: 12/18/2022]
Abstract
ABSTRACT Sodium-glucose cotransporter 2 (SGLT2) inhibitors have been shown to reduce cardiovascular complications of type-2 diabetes mellitus. However, the beneficial effects of SGLT2 inhibition are mainly associated with decline in hospitalization and death of heart failure. This systematic review will focus on the effect of SGLT2 inhibitors on ischemic events stemming from atherosclerotic coronary diseases, including angina pectoris, angina unstable, and myocardial infarction. We searched PubMed, Scopus, Embase, and Web of Science for relevant publications before October 2020. Twenty-two clinical trials consisting of 56,064 participants were included in the analysis. Cardiovascular effects following treatment with SGLT2 inhibitors were observed for angina pectoris, angina unstable, and myocardial infarction. A random-effects model was chosen, and after analysis of the P values and I2 statistic indices, we concluded that SGLT2 inhibitor treatment did not result in any significant differences in the incidence rate of angina pectoris [relative risk (RR), 0.98; 95% confidence interval (CI), 0.83-1.14; P = 0.92], angina unstable (RR, 0.95; 95% CI, 0.84-1.07; P = 0.84), or myocardial infarction (RR, 0.94; 95% CI, 0.79-1.11; P = 0.98) between the experimental and control groups with firm evidence from sensitivity and trial sequential analyses. This meta-analysis provides evidence that SGLT2 inhibitors have no significant effects on ischemic events stemming from atherosclerotic coronary diseases in patients with type-2 diabetes mellitus.
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Nusca A, Tuccinardi D, Pieralice S, Giannone S, Carpenito M, Monte L, Watanabe M, Cavallari I, Maddaloni E, Ussia GP, Manfrini S, Grigioni F. Platelet Effects of Anti-diabetic Therapies: New Perspectives in the Management of Patients with Diabetes and Cardiovascular Disease. Front Pharmacol 2021; 12:670155. [PMID: 34054542 PMCID: PMC8149960 DOI: 10.3389/fphar.2021.670155] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 04/16/2021] [Indexed: 12/14/2022] Open
Abstract
In type 2 diabetes, anti-thrombotic management is challenging, and current anti-platelet agents have demonstrated reduced efficacy. Old and new anti-diabetic drugs exhibited—besides lowering blood glucose levels—direct and indirect effects on platelet function and on thrombotic milieu, eventually conditioning cardiovascular outcomes. The present review summarizes existing evidence on the effects of glucose-lowering agents on platelet properties, addressing pre-clinical and clinical research, as well as drug–drug interactions with anti-platelet agents. We aimed at expanding clinicians’ understanding by highlighting new opportunities for an optimal management of patients with diabetes and cardiovascular disease. We suggest how an improvement of the thrombotic risk in this large population of patients may be achieved by a careful and tailored combination of anti-diabetic and anti-platelet therapies.
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Affiliation(s)
- Annunziata Nusca
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Dario Tuccinardi
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Silvia Pieralice
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Sara Giannone
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Myriam Carpenito
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Lavinia Monte
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Mikiko Watanabe
- Department of Experimental Medicine, Section of Medical Pathophysiology, Food Science and Endocrinology, Sapienza University of Rome, Rome, Italy
| | - Ilaria Cavallari
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Ernesto Maddaloni
- Department of Experimental Medicine, Sapienza University of Rome, Rome, Italy
| | - Gian Paolo Ussia
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Silvia Manfrini
- Unit of Endocrinology and Diabetes, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Francesco Grigioni
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
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46
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Garla VV, Butler J, Lien LF. SGLT-2 Inhibitors in Heart Failure: Guide for Prescribing and Future Perspectives. Curr Cardiol Rep 2021; 23:59. [PMID: 33961133 DOI: 10.1007/s11886-021-01486-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/09/2021] [Indexed: 01/11/2023]
Abstract
PURPOSE OF REVIEW Heart failure is responsible for a significant part of diabetes-associated cardiovascular mortality and morbidity. Sodium-glucose cotransporter-2 (SGLT-2) inhibitors are novel agents approved for the treatment of diabetes mellitus; in recent clinical trials, these agents have shown a significant reduction in cardiovascular death and hospitalization secondary to heart failure. RECENT FINDINGS Clinical trials with specific heart failure outcomes have shown the benefit of SGLT-2 inhibitors in reducing the mortality and morbidity associated with heart failure. The guidelines for the management of diabetes mellitus recommend the preferential use of SGLT-2 inhibitors in patients with a history of cardiovascular disease. SGLT-2 inhibitors are potential game changers in the treatment of heart failure. Guidelines for prescription of these agents help assess risk-benefit analysis and personalize treatment for maximal benefit.
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Affiliation(s)
- Vishnu Vardhan Garla
- Endocrinology, Metabolism and Diabetes, Dept. of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, USA. .,Mississippi Center for Clinical and Translational Research, University of Mississippi Medical Center, Jackson, MS, USA. .,, Jackson, USA.
| | - Javed Butler
- Dept. of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, USA
| | - Lillian F Lien
- Endocrinology, Metabolism and Diabetes, Dept. of Internal Medicine, University of Mississippi Medical Center, Jackson, MS, USA
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Li HL, Lip GYH, Feng Q, Fei Y, Tse YK, Wu MZ, Ren QW, Tse HF, Cheung BMY, Yiu KH. Sodium-glucose cotransporter 2 inhibitors (SGLT2i) and cardiac arrhythmias: a systematic review and meta-analysis. Cardiovasc Diabetol 2021; 20:100. [PMID: 33962654 PMCID: PMC8106208 DOI: 10.1186/s12933-021-01293-8] [Citation(s) in RCA: 97] [Impact Index Per Article: 32.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 04/27/2021] [Indexed: 02/06/2023] Open
Abstract
Background Cardiac arrhythmias are associated with poorer outcomes in patients with heart failure (HF), diabetes mellitus (DM), and chronic kidney disease (CKD). Previous studies have shown inconsistent conclusions regarding the association between sodium-glucose cotransporter 2 inhibitors (SGLT2i) and the risk of developing arrhythmias. This study aims to investigate the association of SGLT2i treatment with arrhythmia outcomes in clinical trials of patients with HF, DM, or CKD. Methods MEDLINE, EMBASE, and ClinicalTrials.gov were searched from inception up to 27 August 2020. Randomized controlled trials that randomized patients with DM, CKD, or HF to SGLT2i or placebo were included. The outcomes of interest include atrial fibrillation (AF), embolic stroke, atrial flutter (AFL), AF/AFL, ventricular tachycardia (VT), and cardiac arrest. Relative risks (RRs) and 95% confidence intervals (CI) were pooled using a random-effects model. Results Out of 4,532 citations, 22 trials with altogether 52,115 patients were included (mean age 63.2 years; 33,747 [64.8%] of participants were men). SGLT2i were associated with a lower risk of AF (RR 0.82, 95% CI 0.70–0.96), embolic stroke (RR 0.32, 95% CI 0.12–0.85), AF/AFL (RR 0.82, 95% CI 0.71–0.95), and VT (RR 0.73, 95% CI 0.53–0.99), while the risk reductions in AFL (RR 0.83, 95% CI 0.58–1.17) and cardiac arrest (RR 0.83, 95% CI 0.61–1.14) did not reach statistical significance. The associations appeared to be consistent across different baseline conditions (DM vs CKD vs HF; atherosclerotic cardiovascular disease [ASCVD] vs no ASCVD) and the SGLT2i used. Conclusions SGLT2i reduced the risk of cardiac arrhythmias. Our study provides further evidence for recommending the use of SGLT2i in patients with DM, CKD, and HF. Further research is needed to fully elucidate the mechanism by which SGLT2i protect against arrhythmias. Supplementary Information The online version contains supplementary material available at 10.1186/s12933-021-01293-8.
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Affiliation(s)
- Hang-Long Li
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Room 1929B/K1931, Block K, Hong Kong, China.,Division of Cardiology, Department of Medicine, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Gregory Y H Lip
- Liverpool Centre for Cardiovascular Science, University of Liverpool and Liverpool Heart & Chest Hospital, Liverpool, UK.,Aalborg Thrombosis Research Unit, Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
| | - Qi Feng
- Jockey Club School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China
| | - Yue Fei
- Division of Clinical Pharmacology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Yi-Kei Tse
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Room 1929B/K1931, Block K, Hong Kong, China
| | - Mei-Zhen Wu
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Room 1929B/K1931, Block K, Hong Kong, China.,Division of Cardiology, Department of Medicine, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Qing-Wen Ren
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Room 1929B/K1931, Block K, Hong Kong, China.,Division of Cardiology, Department of Medicine, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Hung-Fat Tse
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Room 1929B/K1931, Block K, Hong Kong, China.,Division of Cardiology, Department of Medicine, The University of Hong Kong Shenzhen Hospital, Shenzhen, China
| | - Bernard-M Y Cheung
- Division of Clinical Pharmacology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Hong Kong, China
| | - Kai-Hang Yiu
- Division of Cardiology, Department of Medicine, The University of Hong Kong, Queen Mary Hospital, Room 1929B/K1931, Block K, Hong Kong, China. .,Division of Cardiology, Department of Medicine, The University of Hong Kong Shenzhen Hospital, Shenzhen, China.
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Zheng XD, Qu Q, Jiang XY, Wang ZY, Tang C, Sun JY. Effects of Dapagliflozin on Cardiovascular Events, Death, and Safety Outcomes in Patients with Heart Failure: A Meta-Analysis. Am J Cardiovasc Drugs 2021; 21:321-330. [PMID: 33001355 DOI: 10.1007/s40256-020-00441-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/05/2020] [Indexed: 12/28/2022]
Abstract
BACKGROUND Several clinical trials of dapagliflozin in patients with type 2 diabetes mellitus (T2DM) at elevated cardiovascular risk have observed reduced hospitalization for heart failure (HHF). Several studies have also suggested cardiovascular benefits for patients with HF regardless of whether or not they have T2DM. OBJECTIVE This meta-analysis was conducted to evaluate the therapeutic effects of dapagliflozin in patients with HF. METHODS The PubMed, Embase, Cochrane Library, and Web of Science databases were systematically searched from database inception to 15 February 2020. Clinical studies of dapagliflozin use in patients with HF were included. Data on HHF, all-cause mortality, cardiovascular death, major adverse cardiovascular events (MACE), systolic blood pressure, body weight, glycated hemoglobin (HbA1c), and adverse events were collected for analysis. RESULTS Four randomized controlled trials involving 6738 patients with HF were included in this meta-analysis. Patients receiving dapagliflozin showed a significantly lower incidence of HHF [risk ratio (RR) 0.72; P < 0.00001], all-cause mortality (RR 0.83; P = 0.004), cardiovascular death (RR 0.86; P = 0.03), and MACE (RR 0.88; P = 0.03). Moreover, patients receiving dapagliflozin also showed significant improvements in systolic blood pressure and body weight. However, no statistical difference was observed in HbA1c. In addition, hypoglycemia, volume depletion, and renal impairment was not more frequent with dapagliflozin than with placebo. CONCLUSION This meta-analysis suggests that dapagliflozin could be a therapeutic strategy for patients with HF regardless of the presence or absence of T2DM.
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Cardiovascular benefits of sodium-glucose cotransporter 2 inhibitors in diabetic and nondiabetic patients. Cardiovasc Diabetol 2021; 20:78. [PMID: 33827579 PMCID: PMC8028072 DOI: 10.1186/s12933-021-01266-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 03/19/2021] [Indexed: 12/25/2022] Open
Abstract
Sodium-glucose cotransporter 2 inhibitors (SGLT2i) were developed as antidiabetic agents, but accumulating evidence has shown their beneficial effects on the cardiovascular system. Analyses of the EMPA-REG OUTCOME trial (Empagliflozin Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients) suggested that these benefits are independent of glycemic control. Several large-scale outcome trials of SGLT2i also showed cardiovascular benefits in nondiabetic patients, strengthening this perspective. Extensive animal and clinical studies have likewise shown that mechanisms other than the antihyperglycemic effect underlie the cardiovascular benefits. Recent clinical guidelines recommend the use of SGLT2i in patients with type 2 diabetes mellitus and cardiovascular diseases because of the proven cardiovascular protective effects. Since the cardiovascular benefits are independent of glycemic control, the therapeutic spectrum of SGLT2i will likely be extended to nondiabetic patients.
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50
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Azam MA, Chakraborty P, Si D, Du B, Massé S, Lai PFH, Ha ACT, Nanthakumar K. Anti-arrhythmic and inotropic effects of empagliflozin following myocardial ischemia. Life Sci 2021; 276:119440. [PMID: 33781832 DOI: 10.1016/j.lfs.2021.119440] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/10/2021] [Accepted: 03/17/2021] [Indexed: 12/26/2022]
Abstract
BACKGROUND Empagliflozin (EMPA) reduces heart failure hospitalization and mortality. The benefit in terms of ventricular arrhythmia and contractility has not been explored. OBJECTIVE To determine the direct effects of EMPA on ventricular arrhythmia and cardiac contractility in an ex-vivo model of global ischemia-reperfusion (I/R). METHODS Langendorff-perfused rabbit hearts were subjected to 30 min of complete perfusion arrest and reperfusion. Either EMPA (1 μM) or normal saline (controls) was then infused into the perfusate in a randomized fashion. Ten minutes following drug infusion, calcium imaging was performed. At the end of each experiment, the heart was electrically stimulated 5 times to assess the inducibility of ventricular fibrillation (VF). In a separate series of experiments, left ventricular (LV) pressure and epicardial NADH fluorescence were simultaneously recorded. LV specimens were then collected for western blotting. RESULTS Post-ischemia, EMPA treatment was associated with reduction in the induction of VF >10s (rate of induction: 16.7 ± 3.3% vs. 60 ± 8.7% in control hearts, p = 0.003), improvement of LV developed pressure (LVDP; 68.10 ± 9.02% vs. 47.61 ± 5.15% in controls, p = 0.03) and reduction of NADH fluorescence (87.42 ± 2.79% vs. 112.88 ± 2.27% in control hearts, p = 0.04) along with an increase in NAD+/NADH ratio (2.75 ± 0.55 vs. 1.09 ± 0.32 in the control group, p = 0.04) A higher calcium amplitude alternans threshold was also observed with EMPA-treatment (5.42 ± 0.1 Hz vs. 4.75 ± 0.1 Hz in controls, p = 0.006). Sodium-glucose co-transporter-2 (SGLT2) expression was not detected in LV tissues. CONCLUSIONS EMPA treatment reduced ventricular arrhythmia vulnerability and mitigated contractile dysfunction in the global I/R model while improving calcium cycling and mitochondrial redox by SGLT2-independent mechanisms.
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Affiliation(s)
- Mohammed Ali Azam
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada
| | - Praloy Chakraborty
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada
| | - Daoyuan Si
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada
| | - BeiBei Du
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada
| | - Stéphane Massé
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada
| | - Patrick F H Lai
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada
| | - Andrew C T Ha
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada; Toronto General Hospital, Canada
| | - Kumaraswamy Nanthakumar
- The Hull Family Cardiac Fibrillation Management Laboratory, Toronto General Hospital, Canada.
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