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Russell T, Gangotia D, Barry G. Assessing the potential of repurposing ion channel inhibitors to treat emerging viral diseases and the role of this host factor in virus replication. Biomed Pharmacother 2022; 156:113850. [DOI: 10.1016/j.biopha.2022.113850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/25/2022] [Accepted: 10/06/2022] [Indexed: 12/03/2022] Open
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Malyutina S, Mazurenko E, Mazdorova E, Shapkina M, Avdeeva E, Mustafina S, Simonova G, Ryabikov A. The Profile of Glucose Lowering Therapy in Persons with Type 2 Diabetes Mellitus in an Aging Russian Population. J Pers Med 2022; 12:1689. [PMID: 36294828 PMCID: PMC9604909 DOI: 10.3390/jpm12101689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 09/21/2022] [Accepted: 10/06/2022] [Indexed: 12/02/2022] Open
Abstract
We aimed to analyze the profile of glucose lowering therapy (GLT) in persons with diabetes mellitus type 2 (DM2) in an aging Russian population. A random population sample (n = 3898, men/women, 55−84) was examined in Novosibirsk, during 2015−2018 (HAPIEE Project). The design of the present work is a cross-sectional study. DM2 was defined in those with a history of DM2 receiving GLT, or at a level of fasting plasma glucose (FPG) ≥7.0 mmol/L. The entire DM2 group was included in the analysis (n = 803); of these, 476 persons were taking GLT and were included in the analysis at stage 2. Regular GLT medication intake for 12 months was coded with ATC. In studied sample, the prevalence of DM2 was 20.8%. Among subjects with DM2, 59% of individuals received GLT, 32% did not. Glycemic control (FPG < 7.0 mmol/L) was achieved in every fifth participant with DM2 (35% in those receiving GLT). In frequency of GLT use, biguanides ranked in first place (75%), sulfonylurea derivatives in second (35%), insulins in third (12%), and iDPP-4 in fourth (5%). Among those receiving GLT, 24% used combined oral therapy, and 6% used insulin-combined therapy. In conclusion, in a population sample aged 55−84 examined in 2015−2018, glycemic control was achieved in every fifth participant with DM2, and in every third participant receiving GLT. The proportion of participants using new GLT drugs was small, and there was a lack of HbA1c monitoring for intensive glycemic control.
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Affiliation(s)
- Sofia Malyutina
- Research Institute of Internal and Preventive Medicine—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630089 Novosibirsk, Russia
| | - Elena Mazurenko
- Research Institute of Internal and Preventive Medicine—Branch of the Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences, 630089 Novosibirsk, Russia
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Wu PY, Lai SY, Su YT, Yang KC, Chau YP, Don MJ, Lu KH, Shy HT, Lai SM, Kung HN. β-Lapachone, an NQO1 activator, alleviates diabetic cardiomyopathy by regulating antioxidant ability and mitochondrial function. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2022; 104:154255. [PMID: 35738116 DOI: 10.1016/j.phymed.2022.154255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 05/29/2022] [Accepted: 06/06/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Diabetic cardiomyopathy (DC) is one of the major lethal complications in patients with diabetes mellitus (DM); however, no specific strategy for preventing or treating DC has been identified. PURPOSE This study aimed to investigate the effects of β-lapachone (Lap), a natural compound that increases antioxidant activity in various tissues, on DC and explore the underlying mechanisms. STUDY DESIGN AND METHODS As an in vivo model, C57BL/6 mice were fed with the high-fat diet (HF) for 10 weeks to induce type 2 DM. Mice were fed Lap with the HF or after 5 weeks of HF treatment to investigate the protective effects of Lap against DC. RESULTS In the two in vivo models, Lap decreased heart weight, increased heart function, reduced oxidative stress, and elevated mitochondrial content under the HF. In the in vitro model, palmitic acid (PA) was used to mimic the effects of an HF on the differentiated-cardiomyoblast cell line H9c2. The results demonstrated that Lap reduced PA-induced ROS production by increasing the expression of antioxidant regulators and enzymes, inhibiting inflammation, increasing mitochondrial activity, and thus reducing cell damage. Via the use of specific inhibitors and siRNA, the protective effects of Lap were determined to be mediated mainly by NQO1, Sirt1 and mitochondrial activity. CONCLUSION Heart damage in DM is usually caused by excessive oxidative stress. This study showed that Lap can protect the heart from DC by upregulating antioxidant ability and mitochondrial activity in cardiomyocytes. Lap has the potential to serve as a novel therapeutic agent for both the prevention and treatment of DC.
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Affiliation(s)
- Pei-Yu Wu
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University
| | - Shin-Yu Lai
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University
| | - Yi-Ting Su
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University
| | - Kai-Chien Yang
- Graduate Institute of Pharmacology, College of Medicine, National Taiwan University
| | | | | | - Kai-Hsi Lu
- Department of Medical Research and Education, Cheng-Hsin General Hospital
| | - Horng-Tzer Shy
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University
| | - Shu-Mei Lai
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University
| | - Hsiu-Ni Kung
- Graduate Institute of Anatomy and Cell Biology, College of Medicine, National Taiwan University.
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Li T, Providencia R, Jiang W, Liu M, Yu L, Gu C, Chang ACY, Ma H. Association of Metformin with the Mortality and Incidence of Cardiovascular Events in Patients with Pre-existing Cardiovascular Diseases. Drugs 2022; 82:311-322. [PMID: 35032305 DOI: 10.1007/s40265-021-01665-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/17/2021] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Whether metformin reduces all-cause cardiovascular mortality and the incidence of cardiovascular events in patients with pre-existing cardiovascular diseases (CVD) remains inconclusive. Some randomised controlled trials (RCTs) and cohort studies have shown that metformin is associated with an increased risk of mortality and cardiovascular events. METHODS We conducted a pooling synthesis to assess the effects of metformin in all-cause cardiovascular mortality and incidence of cardiovascular events in patients with CVD. Studies published up to October 2021 in PubMed or Embase with a registration in PROSPERO (CRD42020189905) were collected. Both RCT and cohort studies were included. Hazard ratios (HR) with 95% CI were pooled across various trials using the random-effects model. RESULTS This study enrolled 35 published studies (in 14 publications) for qualitative synthesis and identified 33 studies (published in 26 publications) for quantitative analysis. We analysed a total of 61,704 patients, among them 58,271 patients were used to calculate all-cause mortality while 12,814 patients were used to calculate cardiovascular mortality. Compared with non-metformin control, metformin usage is associated with a reduction in all-cause mortality (HR: 0.90; 95% CI 0.83, 0.98; p = 0.01), cardiovascular mortality (HR: 0.89; 95% CI 0.85, 0.94; p < 0.0001), incidence of coronary revascularisation (HR: 0.79; 95% CI 0.64, 0.98; p = 0.03), and heart failure (HR: 0.90; 95% CI 0.87, 0.94; p < 0.0001) in patients with pre-existing cardiovascular diseases. CONCLUSION Metformin use is associated with a reduction in all-cause mortality, cardiovascular mortality, incidence of coronary revascularisation, and heart failure in patients with CVD; however, metformin usage was not associated with reduction in the incidence of myocardial infarction, angina, or stroke.
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Affiliation(s)
- Tian Li
- Department of Physiology and Pathophysiology, Fourth Military Medical University, No. 169 Changle West Rd, Xi'an, 710032, China
| | | | - Wenhua Jiang
- Department of Physiology and Pathophysiology, Fourth Military Medical University, No. 169 Changle West Rd, Xi'an, 710032, China
| | - Manling Liu
- Department of Physiology and Pathophysiology, Fourth Military Medical University, No. 169 Changle West Rd, Xi'an, 710032, China
| | - Lu Yu
- Department of Pathology, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Chunhu Gu
- Department of Cardiovascular Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China
| | - Alex Chia Yu Chang
- Department of Cardiology and Shanghai Institute of Precision Medicine, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 211125, China.
| | - Heng Ma
- Department of Physiology and Pathophysiology, Fourth Military Medical University, No. 169 Changle West Rd, Xi'an, 710032, China.
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Salvatore T, Pafundi PC, Galiero R, Rinaldi L, Caturano A, Vetrano E, Aprea C, Albanese G, Di Martino A, Ricozzi C, Imbriani S, Sasso FC. Can Metformin Exert as an Active Drug on Endothelial Dysfunction in Diabetic Subjects? Biomedicines 2020; 9:biomedicines9010003. [PMID: 33375185 PMCID: PMC7822116 DOI: 10.3390/biomedicines9010003] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/18/2020] [Accepted: 12/21/2020] [Indexed: 12/12/2022] Open
Abstract
Cardiovascular mortality is a major cause of death among in type 2 diabetes (T2DM). Endothelial dysfunction (ED) is a well-known important risk factor for the development of diabetes cardiovascular complications. Therefore, the prevention of diabetic macroangiopathies by preserving endothelial function represents a major therapeutic concern for all National Health Systems. Several complex mechanisms support ED in diabetic patients, frequently cross-talking each other: uncoupling of eNOS with impaired endothelium-dependent vascular response, increased ROS production, mitochondrial dysfunction, activation of polyol pathway, generation of advanced glycation end-products (AGEs), activation of protein kinase C (PKC), endothelial inflammation, endothelial apoptosis and senescence, and dysregulation of microRNAs (miRNAs). Metformin is a milestone in T2DM treatment. To date, according to most recent EASD/ADA guidelines, it still represents the first-choice drug in these patients. Intriguingly, several extraglycemic effects of metformin have been recently observed, among which large preclinical and clinical evidence support metformin’s efficacy against ED in T2DM. Metformin seems effective thanks to its favorable action on all the aforementioned pathophysiological ED mechanisms. AMPK pharmacological activation plays a key role, with metformin inhibiting inflammation and improving ED. Therefore, aim of this review is to assess metformin’s beneficial effects on endothelial dysfunction in T2DM, which could preempt development of atherosclerosis.
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Affiliation(s)
- Teresa Salvatore
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, Via De Crecchio 7, I-80138 Naples, Italy;
| | - Pia Clara Pafundi
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Raffaele Galiero
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Luca Rinaldi
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Alfredo Caturano
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Erica Vetrano
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Concetta Aprea
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Gaetana Albanese
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Anna Di Martino
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Carmen Ricozzi
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Simona Imbriani
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
| | - Ferdinando Carlo Sasso
- Department of Advanced Medical and Surgical Sciences, University of Campania Luigi Vanvitelli, Piazza Luigi Miraglia 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (L.R.); (A.C.); (E.V.); (C.A.); (G.A.); (A.D.M.); (C.R.); (S.I.)
- Correspondence: ; Tel.: +39-081-566-5010
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Avogaro A, Bonora E, Consoli A, Del Prato S, Genovese S, Giorgino F. Glucose-lowering therapy and cardiovascular outcomes in patients with type 2 diabetes mellitus and acute coronary syndrome. Diab Vasc Dis Res 2019; 16:399-414. [PMID: 31044622 DOI: 10.1177/1479164119845612] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Diabetes is a common comorbidity in patients hospitalized for an acute coronary syndrome event, and prevalence is increasing. Among patients hospitalized with acute myocardial infarction, diabetes can be an independent predictor of mortality and new cardiovascular events; both short- and long-term outcomes are worse for patients with diabetes relative to those without, and undiagnosed diabetes is associated with greater mortality. The impact of glycemic control on cardiovascular outcomes and the best approach to treat hyperglycemia upon hospital admission for acute coronary syndrome in patients with or without known diabetes remain open questions. This review assesses available evidence for hyperglycemia management at the time of admission for acute coronary syndrome and, thereafter, finds that (1) admission plasma glucose plays a role in predicting adverse events, especially in patients with unknown diabetes; (2) glycated haemoglobin is a likely predictor of events in patients with unknown diabetes; and (3) hypoglycemia at the time of acute myocardial infarction hospital admission is an important predictor for mortality in patients with and without diabetes. Whether glucose-targeted insulin and glucose infusion have advantages over glucose-insulin-potassium infusion remains controversial. Evidence for the effect of novel glucose-lowering agents used at the time of an acute cardiovascular event is limited and requires more dedicated studies.
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Affiliation(s)
- Angelo Avogaro
- 1 Unit of Metabolic Diseases, Department of Medicine, University of Padova, Padova, Italy
| | - Enzo Bonora
- 2 Division of Endocrinology, Diabetes and Metabolism, Department of Medicine, University and Hospital Trust of Verona, Verona, Italy
| | | | - Stefano Del Prato
- 4 Department of Clinical and Experimental Medicine, Section of Diabetes and Metabolic Diseases, University of Pisa, Pisa, Italy
| | - Stefano Genovese
- 5 Diabetes Endocrine and Metabolic Diseases Unit, Centro Cardiologico Monzino, Milan, Italy
| | - Francesco Giorgino
- 6 Department of Emergency and Organ Transplantation, Section of Internal Medicine, Endocrinology, Andrology and Metabolic Diseases, University of Bari Aldo Moro, Bari, Italy
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Athyros VG, Imprialos K, Stavropoulos K, Sahinidis A, Doumas M. Understanding the cardiovascular risk with non-insulin antidiabetic drugs. Expert Opin Drug Saf 2019; 18:241-251. [DOI: 10.1080/14740338.2019.1586881] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Vasilios G. Athyros
- Second Propedeutic Department of Internal Medicine, Aristotle University, Thessaloniki, Greece
| | - Konstantinos Imprialos
- Second Propedeutic Department of Internal Medicine, Aristotle University, Thessaloniki, Greece
| | | | - Alexandros Sahinidis
- Second Propedeutic Department of Internal Medicine, Aristotle University, Thessaloniki, Greece
| | - Michael Doumas
- Second Propedeutic Department of Internal Medicine, Aristotle University, Thessaloniki, Greece
- Department of Internal Medicine, George Washington University, Washington, DC, USA
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Ioacara S, Guja C, Reghina A, Martin S, Sirbu A, Fica S. All-cause and cardiovascular mortality associated with sulphonylurea and metformin therapy in type 2 diabetes. Endocr Res 2018; 43:97-105. [PMID: 29308936 DOI: 10.1080/07435800.2017.1422745] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
PURPOSE To test the hypothesis that cumulative exposure to sulphonylurea (SU) or metformin (MET) have different effects on mortality when taken as a replacement or add-on of one for the other. METHODS All consecutive diabetes patients aged over 20 years were screened at their first diabetes outpatient visit between 2001 and 2008 (n = 79869). Only patients on MET (n = 11374) or SU (n = 18502) monotherapy were retained. All patients were followed up for death until December 31, 2011, but censored at first exposure to anything else besides MET/SU. Adjusted time-dependent Cox regression and competing risk regression analysis, with daily updates of treatment modalities were performed. RESULTS Mean age was 62.1 ± 11.2 years and follow-up was 4.6 ± 3.2 years (138496 person-years). Adjusted all-cause and cardiovascular mortality rates were significantly higher in MET as compared with SU group. All-cause mortality hazard ratios (HR) for cumulative time exposure were as follows: HR 0.956 (95%CI 0.951-0.962, p < 0.001) for SU added to MET, HR 1.092 (95%CI 1.087-1.096, p < 0.001) for SU replacing MET, HR 0.979 (95%CI 0.975-0.983, p < 0.001) for MET added to SU, and HR 1.127 (95%CI 1.118-1.136, p < 0.001) for MET replacing SU. CONCLUSION(S) The effect on all-cause mortality was beneficial for MET+SU combined therapy, but deleterious for either SU replacing MET, or MET replacing SU. There were no major outcome differences when analyzing individual SU, or specific mortality.
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Affiliation(s)
- Sorin Ioacara
- a Department of Endocrinology and diabetes , "Carol Davila" University of Medicine and Pharmacy , Bucharest , Romania
- b Department of Endocrinology and diabetes , "Elias" University Emergency Hospital , Bucharest , Romania
| | - Cristian Guja
- a Department of Endocrinology and diabetes , "Carol Davila" University of Medicine and Pharmacy , Bucharest , Romania
- c "I. Pavel" Outpatient clinic , Bucharest , Romania
| | - Aura Reghina
- a Department of Endocrinology and diabetes , "Carol Davila" University of Medicine and Pharmacy , Bucharest , Romania
- b Department of Endocrinology and diabetes , "Elias" University Emergency Hospital , Bucharest , Romania
- d "Victor Babes" National Research and Development Institute of Pathology and Biomedical Sciences , Bucharest , Romania
| | - Sorina Martin
- a Department of Endocrinology and diabetes , "Carol Davila" University of Medicine and Pharmacy , Bucharest , Romania
- b Department of Endocrinology and diabetes , "Elias" University Emergency Hospital , Bucharest , Romania
| | - Anca Sirbu
- a Department of Endocrinology and diabetes , "Carol Davila" University of Medicine and Pharmacy , Bucharest , Romania
- b Department of Endocrinology and diabetes , "Elias" University Emergency Hospital , Bucharest , Romania
| | - Simona Fica
- a Department of Endocrinology and diabetes , "Carol Davila" University of Medicine and Pharmacy , Bucharest , Romania
- b Department of Endocrinology and diabetes , "Elias" University Emergency Hospital , Bucharest , Romania
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Gao Z, Wang B, Gong X, Yao C, Ren D, Shao L, Pang Y, Liu J. Effect of gastric bypass combined with ileal transportation on type 2 diabetes mellitus. Exp Ther Med 2018; 15:4571-4577. [PMID: 29725390 DOI: 10.3892/etm.2018.5928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2017] [Accepted: 12/08/2017] [Indexed: 01/14/2023] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a chronic progressive disease, which manifests as an endocrine disorder. Among the different methods of surgery available to treat patients with T2DM, Roux-en-Y gastric bypass (RYGBP) and ileal transposition (IT) are the most commonly performed. The aim of the present study was to investigate the effects of RYGBP combined with IT on rats with T2DM. A total of 8 healthy male rats were used as a control group and 40 GK rats were randomly divided into 5 groups: A diabetes mellitus (DM) group, a sham operative group (SO), a RYGBP group, an IT group and a RYGBP+IT group. The results demonstrated that fasting blood glucose, triglyceride, total cholesterol and gastric inhibitory polypeptide levels in all treatment groups were significantly lower than those of the SO and DM groups. Furthermore, levels TC and TG in the RYGBP+IT group were significantly lower than in the RYGBP and IT groups. Levels of phosphoenolpyruvate carboxykinase and glucose-6-phosphatase mRNA and IRS-2 protein in all treatment groups were also significantly lower than those of the SO group; and they were significantly lower in the RYGBP+IT group compared with the RYGBP and IT groups. The expression of phosphorylated Akt in the treatment groups was significantly higher than the SO group and was significantly higher in the RYGBP+IT group compared with the RYGBP and IT groups. These results indicate that RYGBP and IT surgical treatment can induce T2DM remission by mediating the expression of insulin-related factors to reverse insulin resistance. The current study also indicated that the effect of RYGBP combined with IT may be developed as a novel first-line method of treating T2DM.
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Affiliation(s)
- Zhaoxia Gao
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Bin Wang
- Department of Ear-Nose-Throat, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Xiaojun Gong
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Chun Yao
- Department of Endocrinology, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Defa Ren
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Liwei Shao
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Yan Pang
- Department of Clinical Laboratory, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
| | - Jinxiu Liu
- Department of General Surgery, The Fifth Hospital of Wuhan, Wuhan, Hubei 430050, P.R. China
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Alemi H, Khaloo P, Mansournia MA, Rabizadeh S, Salehi SS, Mirmiranpour H, Meftah N, Esteghamati A, Nakhjavani M. Pulse pressure and diabetes treatments: Blood pressure and pulse pressure difference among glucose lowering modality groups in type 2 diabetes. Medicine (Baltimore) 2018; 97:e9791. [PMID: 29419672 PMCID: PMC5944681 DOI: 10.1097/md.0000000000009791] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Type 2 diabetes is associated with higher pulse pressure. In this study, we assessed and compared effects of classic diabetes treatments on pulse pressure (PP), systolic blood pressure (SBP), and diastolic blood pressure (DBP) in patients with type 2 diabetes.In a retrospective cohort study, 718 non-hypertensive patients with type 2 diabetes were selected and divided into 4 groups including metformin, insulin, glibenclamide+metformin, and metformin+insulin. They were followed for 4 consecutive visits lasting about 45.5 months. Effects of drug regimens on pulse and blood pressure over time were assessed separately and compared in regression models with generalized estimating equation method and were adjusted for age, duration of diabetes, sex, smoking, and body mass index (BMI).Studied groups had no significant change in PP, SBP, and DBP over time. No significant difference in PP and DBP among studied groups was observed (PP:P = 0.090; DBP:P = 0.063). Pairwise comparisons of PP, SBP, and DBP showed no statistically significant contrast between any 2 studied groups. Interactions of time and treatment were not different among groups.Our results demonstrate patients using metformin got higher PP and SBP over time. Averagely, pulse and blood pressure among groups were not different. Trends of variation in pulse and blood pressure were not different among studied diabetes treatments.
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Affiliation(s)
- Hamid Alemi
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Pegah Khaloo
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Mohammad Ali Mansournia
- Department of Epidemiology and Biostatistics, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Soghra Rabizadeh
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Salome Sadat Salehi
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Hossein Mirmiranpour
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Neda Meftah
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Alireza Esteghamati
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
| | - Manouchehr Nakhjavani
- Endocrinology and Metabolism Research Center (EMRC), Vali-Asr Hospital, School of Medicine
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Nazer RI, Alburikan KA. Metformin is not associated with lactic acidosis in patients with diabetes undergoing coronary artery bypass graft surgery: a case control study. BMC Pharmacol Toxicol 2017; 18:38. [PMID: 28558845 PMCID: PMC5450408 DOI: 10.1186/s40360-017-0145-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Accepted: 05/16/2017] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Metformin associated lactic acidosis (MALA) is a rare but lethal complication. There is no consensus regarding when to stop and resume metformin in patients who undergo coronary artery bypass grafting (CABG). This study aimed to determine if uninterrupted metformin administration in patients with diabetes undergoing CABG increases the risk of lactic acidosis. METHODS Over a span of 12 months (2015-2016), 127 patients with type 2 diabetes underwent isolated CABG. Of those, 41 patients (32%) continued taking metformin and 86 patients (68%) took other antidiabetic agents. Patients taking metformin took the drug until the day of surgery and resumed taking it 3 h after extubation. RESULTS There were no differences in clinical outcomes or complications between groups. Serial measurement of cardiac, liver, and kidney biomarkers were similar between groups. The mean peak lactic acid level was significantly higher in the non-metformin users (5.4 ± 2.6 vs. 7.4 ± 4.1 mmol/l; P = 0.001). Multivariable logistic regression analysis identified the need for vasopressor administration as an independent predictor of lactic acidosis (odds ratio: 7.3, 95% confidence interval: 2.5-20.6; P < 0.001). CONCLUSION In the absence of risk factors associated with persistent lactic acidosis, such as shock or acute kidney or liver injury, continued peri-operative metformin administration was not associated with the occurrence of lactic acidosis in patients undergoing CABG. Elevated lactic acid levels seem to be directly related to tissue anoxia caused by escalating vasopressor support after surgery.
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Affiliation(s)
- Rakan I. Nazer
- Department of Cardiac Science, King Fahad Cardiac Center, College of Medicine, King Saud University, KSU 3642, Riyadh, 12372-7143 Kingdom of Saudi Arabia
| | - Khalid A. Alburikan
- Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Kingdom of Saudi Arabia
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12
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Azoulay L, Suissa S. Sulfonylureas and the Risks of Cardiovascular Events and Death: A Methodological Meta-Regression Analysis of the Observational Studies. Diabetes Care 2017; 40:706-714. [PMID: 28428321 DOI: 10.2337/dc16-1943] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 01/07/2017] [Indexed: 02/03/2023]
Abstract
Recent randomized trials have compared the newer antidiabetic agents to treatments involving sulfonylureas, drugs associated with increased cardiovascular risks and mortality in some observational studies with conflicting results. We reviewed the methodology of these observational studies by searching MEDLINE from inception to December 2015 for all studies of the association between sulfonylureas and cardiovascular events or mortality. Each study was appraised with respect to the comparator, the outcome, and study design-related sources of bias. A meta-regression analysis was used to evaluate heterogeneity. A total of 19 studies were identified, of which six had no major design-related biases. Sulfonylureas were associated with an increased risk of cardiovascular events and mortality in five of these studies (relative risks 1.16-1.55). Overall, the 19 studies resulted in 36 relative risks as some studies assessed multiple outcomes or comparators. Of the 36 analyses, metformin was the comparator in 27 (75%) and death was the outcome in 24 (67%). The relative risk was higher by 13% when the comparator was metformin, by 20% when death was the outcome, and by 7% when the studies had design-related biases. The lowest predicted relative risk was for studies with no major bias, comparator other than metformin, and cardiovascular outcome (1.06 [95% CI 0.92-1.23]), whereas the highest was for studies with bias, metformin comparator, and mortality outcome (1.53 [95% CI 1.43-1.65]). In summary, sulfonylureas were associated with an increased risk of cardiovascular events and mortality in the majority of studies with no major design-related biases. Among studies with important biases, the association varied significantly with respect to the comparator, the outcome, and the type of bias. With the introduction of new antidiabetic drugs, the use of appropriate design and analytical tools will provide their more accurate cardiovascular safety assessment in the real-world setting.
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Affiliation(s)
- Laurent Azoulay
- Center for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Canada .,Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada.,Gerald Bronfman Department of Oncology, McGill University, Montreal, Canada
| | - Samy Suissa
- Center for Clinical Epidemiology, Lady Davis Institute, Jewish General Hospital, Montreal, Canada.,Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Canada
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13
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Huang CJ, Hsieh HM, Chiu HC, Wang PW, Lee MH, Li CY, Lin CH. Impact of Anxiety Disorders on Mortality for Persons With Diabetes: A National Population-Based Cohort Study. PSYCHOSOMATICS 2016; 58:266-273. [PMID: 28189286 DOI: 10.1016/j.psym.2016.11.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 11/12/2016] [Accepted: 11/14/2016] [Indexed: 10/20/2022]
Abstract
BACKGROUND Most studies of the relationship between psychiatric disorders and mortality in patients with diabetes mellitus (DM) have focused on the role of depression. OBJECTIVE The aim of this study was to investigate the impact of anxiety disorders (ADs) on mortality in persons with DM in Taiwan. METHODS We used Taiwan׳s National Health Insurance claims database interlinked externally with Taiwan׳s Death Registry to study mortality in diabetic patients with and without ADs during the study period 2000-2004. Five-year survival cures were calculated using the Kaplan-Meier method for DM with ADs and DM without ADs. Cox regression analysis was used to analyze the predictive factors for DM mortality. RESULTS We identified 5685 persons with DM, including 732 (12.88%) who also had ADs. The 5-year survival was longer for diabetic patients with ADs than those without it. A higher risk of mortality was found in diabetic patients who were male. It was also higher for those who were 45-64 years old and ≥65 years old, those who resided in rural areas, those who had incomes <US$ 666 (NT$ 20,000) or were living on dependent incomes. ADs were found to confer a lower risk of mortality regardless of diabetes type. CONCLUSIONS ADs confer some protection from mortality in patients with DM. Our findings add valuable epidemiological information from a different ethnic population.
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Affiliation(s)
- Chun-Jen Huang
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Psychiatry, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hui-Min Hsieh
- Department of Public Health, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Herng-Chia Chiu
- Department of Healthcare Administration and Medical Informatics, College of Health Science, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Peng-Wei Wang
- Department of Psychiatry, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Psychiatry, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Mei-Hsuan Lee
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chih-Yi Li
- Division of Secretary, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ching-Hua Lin
- Department of Psychiatry, Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan; Kaohsiung Municipal Kai-Syuan Psychiatric Hospital, Kaohsiung, Taiwan.
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14
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Marín-Peñalver JJ, Martín-Timón I, Sevillano-Collantes C, del Cañizo-Gómez FJ. Update on the treatment of type 2 diabetes mellitus. World J Diabetes 2016; 7:354-95. [PMID: 27660695 PMCID: PMC5027002 DOI: 10.4239/wjd.v7.i17.354] [Citation(s) in RCA: 339] [Impact Index Per Article: 42.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 07/02/2016] [Accepted: 07/20/2016] [Indexed: 02/05/2023] Open
Abstract
To achieve good metabolic control in diabetes and keep long term, a combination of changes in lifestyle and pharmacological treatment is necessary. Achieving near-normal glycated hemoglobin significantly, decreases risk of macrovascular and microvascular complications. At present there are different treatments, both oral and injectable, available for the treatment of type 2 diabetes mellitus (T2DM). Treatment algorithms designed to reduce the development or progression of the complications of diabetes emphasizes the need for good glycaemic control. The aim of this review is to perform an update on the benefits and limitations of different drugs, both current and future, for the treatment of T2DM. Initial intervention should focus on lifestyle changes. Moreover, changes in lifestyle have proven to be beneficial, but for many patients is a complication keep long term. Physicians should be familiar with the different types of existing drugs for the treatment of diabetes and select the most effective, safe and better tolerated by patients. Metformin remains the first choice of treatment for most patients. Other alternative or second-line treatment options should be individualized depending on the characteristics of each patient. This article reviews the treatments available for patients with T2DM, with an emphasis on agents introduced within the last decade.
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15
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Comparative Impact of Hypoglycemic Agents on Severity and Extent of Myocardial Ischemia in Patients With Type 2 Diabetes Mellitus Undergoing Myocardial Perfusion Scintigraphy. J Cardiovasc Pharmacol 2016; 68:162-70. [PMID: 27074768 DOI: 10.1097/fjc.0000000000000399] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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16
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Ou HT, Chen YT, Liu YM, Wu JS. Comparative cost-effectiveness of metformin-based dual therapies associated with risk of cardiovascular diseases among Chinese patients with type 2 diabetes: Evidence from a population-based national cohort in Taiwan. Diabetes Res Clin Pract 2016; 116:14-25. [PMID: 27321311 DOI: 10.1016/j.diabres.2016.03.013] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 01/18/2016] [Accepted: 03/19/2016] [Indexed: 01/21/2023]
Abstract
OBJECTIVE To assess the cost-effectiveness of metformin-based dual therapies associated with cardiovascular disease (CVD) risk in a Chinese population with type 2 diabetes. METHODS We utilized Taiwan's National Health Insurance Research Database (NHIRD) 1997-2011, which is derived from the claims of National Health Insurance, a mandatory-enrollment single-payer system that covers over 99% of Taiwan's population. Four metformin-based dual therapy cohorts were used, namely a reference group of metformin plus sulfonylureas (Metformin-SU) and metformin plus acarbose, metformin plus thiazolidinediones (Metformin-TZD), and metformin plus glinides (Metformin-glinides). Using propensity scores, each subject in a comparison cohort was 1:1 matched to a referent. The effectiveness outcome was CVD risk. Only direct medical costs were included. The Markov chain model was applied to project lifetime outcomes, discounted at 3% per annum. The bootstrapping technique was performed to assess uncertainty in analysis. RESULTS Metformin-glinides was most cost-effective in the base-case analysis; Metformin-glinides saved $194 USD for one percentage point of reduction in CVD risk, as compared to Metformin-SU. However, for the elderly or those with severe diabetic complications, Metformin-TZD, especially pioglitazone, was more suitable; as compared to Metformin-SU, Metformin-TZD saved $840.1 USD per percentage point of reduction in CVD risk. Among TZDs, Metformin-pioglitazone saved $1831.5 USD per percentage point of associated CVD risk reduction, as compared to Metformin-rosiglitazone. CONCLUSIONS When CVD is considered an important clinical outcome, Metformin-pioglitazone is cost-effective, in particular for the elderly and those with severe diabetic complications.
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Affiliation(s)
- Huang-Tz Ou
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | - Yen-Ting Chen
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ya-Ming Liu
- Department of Economics, National Cheng Kung University, Tainan, Taiwan
| | - Jin-Shang Wu
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Family Medicine, National Cheng Kung University Hospital, Tainan, Taiwan
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17
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Tamblyn R, Girard N, Dixon WG, Haas J, Bates DW, Sheppard T, Eguale T, Buckeridge D, Abrahamowicz M, Forster A. Pharmacosurveillance without borders: electronic health records in different countries can be used to address important methodological issues in estimating the risk of adverse events. J Clin Epidemiol 2016; 77:101-111. [PMID: 27212138 DOI: 10.1016/j.jclinepi.2016.03.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 02/19/2016] [Accepted: 03/11/2016] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Evaluate methodological advantages and limitations of an international pharmacosurveillance system based on electronic health records (EHRs). STUDY DESIGN AND SETTINGS Type 2 diabetes was used as an exemplar. Cohorts of newly treated diabetics were followed in each country (Quebec, Canada; Massachusetts, United States; Manchester, UK) from 2009 to 2012 using local EHR systems. Cox proportional hazards models were used to assess the risk of cardiovascular events. RESULTS A total of 44,913 newly treated diabetics were identified; 82.6% (United States) to 93.1% (Canada) were started on biguanides; 13% of patients failed to fill initial prescriptions. An increased risk of cardiovascular events with sulfonylureas was observed when dispensing [hazard ratio (HR): 2.83] vs. EHR prescribing (HR: 2.47) data were used. The addition of clinical data produced a threefold to 10-fold increase in comorbidity for obesity and renal disease, but had no impact on the risk of different hypoglycemic therapies. The risk of cardiovascular events with sulfonylureas was higher in the United States [HR: 3.4; 95% confidence interval (CI): 2.1, 5.5] compared to England (HR: 1.3; 95% CI: 1.1, 1.6). CONCLUSION An international surveillance system based on EHRs may provide more timely information about drug safety and new opportunities to estimate potential sources of bias and health system effects on drug-related outcomes.
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Affiliation(s)
- Robyn Tamblyn
- Department of Epidemiology, Biostatistics and Occupational Health, Purvis Hall, McGill University, 1020 Pine Avenue West, Montreal, Quebec H3A 1A2, Canada; Department of Medicine, McGill University Health Center, 1001 Decarie Boulevard, Montreal, Quebec H4A 3J1, Canada; Clinical and Health Informatics Research Group, McGill University, 1140 Pine Avenue, Montreal, Quebec H3A 1A3, Canada.
| | - Nadyne Girard
- Clinical and Health Informatics Research Group, McGill University, 1140 Pine Avenue, Montreal, Quebec H3A 1A3, Canada
| | - William G Dixon
- Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Institute of Inflammation and Repair, Manchester Academic Health Science Centre, The University of Manchester, 2nd Floor, Stopford Building, Oxford Road, Manchester M13 9PT, UK
| | - Jennifer Haas
- Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
| | - David W Bates
- Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
| | - Thérèse Sheppard
- Arthritis Research UK Centre for Epidemiology, Centre for Musculoskeletal Research, Institute of Inflammation and Repair, Manchester Academic Health Science Centre, The University of Manchester, 2nd Floor, Stopford Building, Oxford Road, Manchester M13 9PT, UK
| | - Tewodros Eguale
- Department of Epidemiology, Biostatistics and Occupational Health, Purvis Hall, McGill University, 1020 Pine Avenue West, Montreal, Quebec H3A 1A2, Canada
| | - David Buckeridge
- Department of Epidemiology, Biostatistics and Occupational Health, Purvis Hall, McGill University, 1020 Pine Avenue West, Montreal, Quebec H3A 1A2, Canada
| | - Michal Abrahamowicz
- Department of Epidemiology, Biostatistics and Occupational Health, Purvis Hall, McGill University, 1020 Pine Avenue West, Montreal, Quebec H3A 1A2, Canada
| | - Alan Forster
- The Ottawa Hospital, 501 Smyth Road, Ottawa, Ontario K1H 8L6, Canada
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Shin S, Kim H. The effect of sitagliptin on cardiovascular risk profile in Korean patients with type 2 diabetes mellitus: a retrospective cohort study. Ther Clin Risk Manag 2016; 12:435-44. [PMID: 27042085 PMCID: PMC4801131 DOI: 10.2147/tcrm.s105285] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND A 2013 postmarketing study suggested a possible link between saxagliptin use and hospital admission for heart failure. Cardiovascular (CV) effects of sitagliptin, the most commonly prescribed antidiabetic in the same class as saxagliptin, have not been evaluated much in Asian patients with type 2 diabetes. This study sought to ascertain the CV safety of sitagliptin in Korean patients. METHODS A retrospective cohort study of 4,860 patients who were classified into the sitagliptin and metformin groups was conducted using electronic patient data retrieved from a major tertiary care medical center in Korea. Primary composite end points included CV death, myocardial infarction, and ischemic stroke. Secondary composite end points included the aforementioned individual primary outcomes plus hospitalization due to unstable angina, heart failure, or coronary revascularization. A Cox proportional-hazards model was used to compare CV risk associated with drug exposure. RESULTS Following propensity score (PS) matching in a 1:2 ratio, 1,620 patients in the sitagliptin group and 3,240 patients in the metformin group were identified for cohort entry. The PS-matched hazard ratio (HR) and 95% confidence interval (CI) for sitagliptin relative to metformin were, respectively, 0.831 and 0.536-1.289 (P=0.408) for primary end point and 1.140 and 0.958-1.356 (P=0.139) for secondary end point. Heart failure hospitalization rates did not differ significantly between the two groups, with the PS-matched HR of 0.762 and 95% CI of 0.389-1.495 (P=0.430). When only those patients at high risk of ischemic heart disease were included for analysis, no excess CV risk was observed with sitagliptin compared with metformin. Overall, there were no substantial between-group differences in rates of adverse events, such as hypoglycemia and incident pancreatic disease. CONCLUSION Sitagliptin was not associated with elevated risk of CV complications including myocardial infarction, ischemic stroke, heart failure, and coronary revascularization, compared to metformin therapy among Korean patients with type 2 diabetes.
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Affiliation(s)
- Sooyoung Shin
- College of Pharmacy, Ajou University, Suwon, Republic of Korea
| | - Hyunah Kim
- College of Pharmacy, Sookmyung Women's University, Seoul, Republic of Korea
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Abstract
Sulfonylureas (SUs) remain the most commonly prescribed drug after metformin in the treatment of type 2 diabetes (T2DM), despite the availability of several newer agents. The primary reason of SUs being most popular is their quick glycemic response, time-tested experience and least cost. Although SUs are one amongst the several other second line agents after metformin in all major guidelines, the new Dutch type 2 guidelines specifically advise gliclazide as the preferred second line drug instead of SUs as a class. The World Health Organization (WHO) has also included gliclazide in their Model List of Essential Medicines 2013 motivated by its safety data in elderly patients. Specifically advising gliclazide may have been based on emerging evidence suggesting cardiovascular neutrality of gliclazide over other SUs. This prompted us to do a literature review of gliclazide efficacy and safety data compared to other SUs as well as oral anti-diabetic drugs.
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Affiliation(s)
| | - Ritu Singh
- a G.D Hospital & Diabetes Institute , Kolkata , West Bengal , India
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20
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Ou HT, Chang KC, Li CY, Wu JS. Risks of cardiovascular diseases associated with dipeptidyl peptidase-4 inhibitors and other antidiabetic drugs in patients with type 2 diabetes: a nation-wide longitudinal study. Cardiovasc Diabetol 2016; 15:41. [PMID: 26932742 PMCID: PMC4774127 DOI: 10.1186/s12933-016-0350-4] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 02/03/2016] [Indexed: 01/21/2023] Open
Abstract
Background Several antidiabetic drugs (i.e., sulfonylureas; SU, rosiglitazone) have been reported to be associated with increased risks of cardiovascular diseases (CVD) in patients with type 2 diabetes mellitus (T2DM). Dipeptidyl peptidase-4 inhibitors (DPP4i) are newly available antidiabetic drugs. Most studies only compared DPP4i with a placebo or SU, or targeted a specific CVD event of interest (i.e., heart failure; HF). Comparative research of CVD risks of DPP4i with other antidiabetic drugs (i.e., metformin, thiazolidinediones, meglitinides, acarbose, and insulin) remains scarce. This study was aimed to assess comparative risks of CVD, including ischemic stroke, myocardial infarction (MI) and HF, and hypoglycemia of DPP4i with other antidiabetic drugs. Methods We utilized Taiwan’s National Health Insurance Research Database. A total of 123,050 T2DM patients newly prescribed oral antidiabetic treatments were identified in 2009–2010 and followed until 2013. Outcome endpoints included a composite of CVD events: hospitalizations for ischemic stroke, MI and HF, and hypoglycemia. Time-varying Cox proportional hazards regression was applied to assess the time to event hazards of various antidiabetic drugs, adjusted for patients’ demographics, comorbidity, diabetic complications, and co-medications. Additional analyses were performed for the patients with and without CVD history, respectively. Results DPP4i users had significantly lower CVD risks as compared to that of non-DPP4i users (adjusted hazard ratio [aHR]: 0.83, 95 % confidence interval [CI]: 0.76–0.91). Compared to DPP4i users, meglitinides (aHR 1.3, 95 % CI 1.20–1.43) and insulin users (aHR 3.73, 95 % CI 3.35, 4.14) had significantly higher risks for composite CVD, as well as those for stroke, MI, HF, and hypoglycemia. Additionally, metformin users had significantly lower risks for composite CVD risk (aHR 0.87, 95 % CI 0.79–0.94), as well as those for MI, HF, and hypoglycemia, as compared to those of DPP4i users. Although there was a trend toward low CVD risks in pioglitazone users, the role of potential confounding by indication cannot be excluded. Conclusions DPP4i-treated T2DM patients had lower risks for CVD as compared to those for non-DPP4i users, except metformin users. Electronic supplementary material The online version of this article (doi:10.1186/s12933-016-0350-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Huang-Tz Ou
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, 1 University Road, Tainan, 7010, Taiwan.
| | - Kai-Cheng Chang
- Institute of Clinical Pharmacy and Pharmaceutical Sciences, College of Medicine, National Cheng Kung University, 1 University Road, Tainan, 7010, Taiwan.
| | - Chung-Yi Li
- Department of Public Health, College of Medicine, National Cheng Kung University, Tainan, Taiwan. .,Department of Public Health, China Medical University, Taichung, Taiwan.
| | - Jin-Shang Wu
- Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan. .,Department of Family Medicine, National Cheng Kung University Hospital, Tainan, Taiwan.
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21
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Kedia R, Kulkarni S, Ross M, Shivaswamy V. Spotlight on empagliflozin/metformin fixed-dose combination for the treatment of type 2 diabetes: a systematic review. Patient Prefer Adherence 2016; 10:1999-2006. [PMID: 27757020 PMCID: PMC5053375 DOI: 10.2147/ppa.s85748] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The dramatic rise in the prevalence of obesity and diabetes is associated with increased morbidity, mortality, and public health care costs worldwide. The need for new, effective, and long-lasting drugs is urgent. Recent research has focused on the role of the inhibitors of sodium- glucose co-transporter 2 (SGLT-2). Clinical trials have shown that SGLT-2 inhibitors have glycemic efficacy and weight-lowering potential. Dual drug therapy is a recommended therapy for patients with new-onset type 2 diabetes who need significant glycemic control. Fixed-dose combination therapy represents a particularly attractive option as it may reduce pill burden and improve adherence. The combination of metformin and empagliflozin was approved by the US Food and Drug Administration in 2014 and represents a safe and effective means to combat glycemic control and weight gain. The purpose of this systematic review is to summarize the background of the SGLT-2 inhibitors, particularly empagliflozin, and focus on the safety and efficacy of the fixed-dose combination of empagliflozin and metformin.
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Affiliation(s)
- Rohit Kedia
- Division of Diabetes, Endocrinology, and Metabolism, Department of Internal Medicine, University of Nebraska Medical Center
| | - Supriya Kulkarni
- Division of Diabetes, Endocrinology, and Metabolism, Department of Internal Medicine, University of Nebraska Medical Center
| | - Meredith Ross
- Division of Diabetes, Endocrinology, and Metabolism, Department of Internal Medicine, University of Nebraska Medical Center
| | - Vijay Shivaswamy
- Division of Diabetes, Endocrinology, and Metabolism, Department of Internal Medicine, University of Nebraska Medical Center
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, USA
- Correspondence: Vijay Shivaswamy, Division of Diabetes, Endocrinology, and Metabolism, Department of Internal Medicine, University of Nebraska Medical Center, 984130 Nebraska Medical Center, Omaha, NE 68198-4130, USA, Tel +1 402 559 6208, Fax +1 402 559 9504, Email
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Ferrannini E, DeFronzo RA. Impact of glucose-lowering drugs on cardiovascular disease in type 2 diabetes. Eur Heart J 2015; 36:2288-96. [PMID: 26063450 DOI: 10.1093/eurheartj/ehv239] [Citation(s) in RCA: 182] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Accepted: 05/16/2015] [Indexed: 12/11/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is characterized by multiple pathophysiologic abnormalities. With time, multiple glucose-lowering medications are commonly required to reduce and maintain plasma glucose concentrations within the normal range. Type 2 diabetes mellitus individuals also are at a very high risk for microvascular complications and the incidence of heart attack and stroke is increased two- to three-fold compared with non-diabetic individuals. Therefore, when selecting medications to normalize glucose levels in T2DM patients, it is important that the agent not aggravate, and ideally even improve, cardiovascular risk factors (CVRFs) and reduce cardiovascular morbidity and mortality. In this review, we examine the effect of oral (metformin, sulfonylureas, meglitinides, thiazolidinediones, DPP4 inhibitors, SGLT2 inhibitors, and α-glucosidase inhibitors) and injectable (glucagon-like peptide-1 receptor agonists and insulin) glucose-lowering drugs on established CVRFs and long-term studies of cardiovascular outcomes. Firm evidence that in T2DM cardiovascular disease can be reversed or prevented by improving glycaemic control is still incomplete and must await large, long-term clinical trials in patients at low risk using modern treatment strategies, i.e., drug combinations designed to maximize HbA1c reduction while minimizing hypoglycaemia and excessive weight gain.
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Affiliation(s)
- Ele Ferrannini
- Institute of Clinical Physiology, National Research Council (CNR), Pisa, Italy
| | - Ralph A DeFronzo
- Diabetes Division, University of Texas Health Science Center, San Antonio, TX, USA
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Jabbour SA, Whaley JM, Tirmenstein M, Poucher SM, Reilly TP, Boulton DW, Saye J, List JF, Parikh S. Targeting Renal Glucose Reabsorption for the Treatment of Type 2 Diabetes Mellitus Using the SGLT2 Inhibitor Dapagliflozin. Postgrad Med 2015; 124:62-73. [DOI: 10.3810/pgm.2012.07.2569] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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Patorno E, Garry EM, Patrick AR, Schneeweiss S, Gillet VG, Zorina O, Bartels DB, Seeger JD. Addressing Limitations in Observational Studies of the Association Between Glucose-Lowering Medications and All-Cause Mortality: A Review. Drug Saf 2015; 38:295-310. [DOI: 10.1007/s40264-015-0280-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Huang Y, Abdelmoneim AS, Light P, Qiu W, Simpson SH. Comparative cardiovascular safety of insulin secretagogues following hospitalization for ischemic heart disease among type 2 diabetes patients: a cohort study. J Diabetes Complications 2015; 29:196-202. [PMID: 25534984 DOI: 10.1016/j.jdiacomp.2014.11.012] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Revised: 11/20/2014] [Accepted: 11/21/2014] [Indexed: 12/25/2022]
Abstract
AIM To evaluate the association between insulin secretagogues and adverse cardiovascular sequelae in type 2 diabetes patients hospitalized for ischemic heart disease (IHD). METHODS Administrative health records from Alberta, Canada between 1998 and 2010 were used to identify 2,254 gliclazide, 3,289 glyburide and 740 repaglinide users prior to an IHD-related hospitalization. Multivariable Cox regression models were used to compare the 30-day risk of a composite outcome of all-cause mortality or new onset of atrial fibrillation, stroke, heart failure or myocardial infarction according to insulin secretagogue use. RESULTS Mean (SD) age was 76.1 (6.9) years, and 60.7% were men. The composite outcome occurred in 322 (30.2%) gliclazide users, 455 (28.1%) glyburide users and 81 (23.4%) repaglinide users within 30 days of IHD hospitalization. There were no differences in risk for glyburide use (adjusted hazard ratio [aHR] 0.91; 95% confidence interval [CI] 0.78-1.05) or repaglinide use (aHR 0.80; 95% CI 0.63-1.03) compared to gliclazide. Similar results were observed in analyses for each element of the composite outcome. CONCLUSIONS In older patients with type 2 diabetes hospitalized for IHD, prior use of gliclazide, glyburide, or repaglinide appears to be associated with a similar risk of adverse cardiovascular sequelae.
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Affiliation(s)
- Yuhao Huang
- Department of Biochemistry, Faculty of Medicine and Dentistry, University of Alberta, 8440 122St. NW, Edmonton, Alberta, Canada, T6G 2R7.
| | - Ahmed S Abdelmoneim
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 11405 87 Ave. NW,St. Edmonton, Alberta, Canada, T6G 1C9.
| | - Peter Light
- Department of Pharmacology, Faculty of Medicine and Dentistry, University of Alberta, 8440 122St. NW, Edmonton, Alberta, Canada, T6G 2R7.
| | - Weiyu Qiu
- School of Public Health, University of Alberta, 11405-87 Ave, Edmonton, Alberta, Canada, T6G 1C9.
| | - Scot H Simpson
- Faculty of Pharmacy and Pharmaceutical Sciences, University of Alberta, 11405 87 Ave. NW,St. Edmonton, Alberta, Canada, T6G 1C9.
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Mogensen UM, Andersson C, Fosbøl EL, Schramm TK, Vaag A, Scheller NM, Torp-Pedersen C, Gislason G, Køber L. Metformin in combination with various insulin secretagogues in type 2 diabetes and associated risk of cardiovascular morbidity and mortality--a retrospective nationwide study. Diabetes Res Clin Pract 2015; 107:104-12. [PMID: 25458330 DOI: 10.1016/j.diabres.2014.09.047] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 08/21/2014] [Accepted: 09/15/2014] [Indexed: 01/13/2023]
Abstract
AIMS Metformin is the first-line treatment for most patients with type 2 diabetes but many patients need additional treatment with insulin secretagogues (IS) to achieve glycemic control. We aimed to compare mortality and cardiovascular risk among users of metformin in combination with pharmacologically different ISs. METHODS Using nationwide administrative Danish registries, we followed all individuals without prior stroke or myocardial infarction who initiated metformin and an IS from 1997 through 2009. Rate ratios (RR) of all-cause mortality, cardiovascular death, and a composite of myocardial infarction, stroke, or cardiovascular death were compared between user groups using time-dependent multivariable Poisson regression models. The most common combination, glimepiride+metformin, was used as reference. RESULTS A total of 56,827 patients were included, 56% male, the mean age was 61 ± 12.5 years, and median duration of prior monotherapy was 2.2 (inter quartile range 0.5-4.5) years. Crude incidence rates of mortality for combinations of ISs with metformin were; 15.4 (repaglinide), 28.1 (glipizide), 23.7 (glibenclamide), 21.1 (gliclazide), 20.7 (glimepiride), 27.7 (tolbutamide) deaths per 1000 person years. In adjusted analysis, the associated mortality risk was similar for users of gliclazide+metformin (RR=1.01 [0.88-1.15]), repaglinide+metformin (RR=0.81 [0.62-1.05]), glibenclamide+metformin (RR=0.98 [0.87-1.10]), and tolbutamide+metformin (RR=1.04 [0.85-1.28]). Users of glipizide+metformin was associated with increased all-cause mortality (RR=1.16 [1.02-1.32], p=0.02), cardiovascular death (RR=1.21 [1.01-1.46], p=0.04), and the combined endpoint (RR=1.20 [1.06-1.36, p=0.005). CONCLUSION Most ISs in combination with metformin were associated with similar mortality and cardiovascular risk. Whether glipizide is associated with increased risk compared with other ISs when used in combinations with metformin warrants further study.
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Affiliation(s)
| | | | - Emil Loldrup Fosbøl
- Department of Cardiology, University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Tina Ken Schramm
- Department of Cardiology, University Hospital Frederiksberg, Copenhagen, Denmark
| | - Allan Vaag
- Department of Endocrinology, University Hospital Rigshospitalet, Copenhagen, Denmark
| | | | | | - Gunnar Gislason
- Department of Cardiology, University Hospital Gentofte, Copenhagen, Denmark; Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; National Institute of Public Health, University of Southern Denmark, Odense, Denmark
| | - Lars Køber
- Department of Cardiology, University Hospital Rigshospitalet, Copenhagen, Denmark
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Patorno E, Patrick AR, Garry EM, Schneeweiss S, Gillet VG, Bartels DB, Masso-Gonzalez E, Seeger JD. Observational studies of the association between glucose-lowering medications and cardiovascular outcomes: addressing methodological limitations. Diabetologia 2014; 57:2237-50. [PMID: 25212258 DOI: 10.1007/s00125-014-3364-z] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 08/06/2014] [Indexed: 12/13/2022]
Abstract
BACKGROUND Recent years have witnessed a growing body of observational literature on the association between glucose-lowering treatments and cardiovascular disease. However, many of the studies are based on designs or analyses that inadequately address the methodological challenges involved. METHODS We reviewed recent observational literature on the association between glucose-lowering medications and cardiovascular outcomes and assessed the design and analysis methods used, with a focus on their ability to address specific methodological challenges. We describe and illustrate these methodological issues and their impact on observed associations, providing examples from the reviewed literature. We suggest approaches that may be employed to manage these methodological challenges. RESULTS From the evaluation of 81 publications of observational investigations assessing the association between glucose-lowering treatments and cardiovascular outcomes, we identified the following methodological challenges: 1) handling of temporality in administrative databases; 2) handling of risks that vary with time and treatment duration; 3) definitions of the exposure risk window; 4) handling of exposures that change over time; and 5) handling of confounding by indication. Most of these methodological challenges may be suitably addressed through application of appropriate methods. CONCLUSIONS/INTERPRETATION Observational research plays an increasingly important role in the evaluation of the clinical effects of diabetes treatment. Implementation of appropriate research methods holds the promise of reducing the potential for spurious findings and the risk that the spurious findings will mislead the medical community about risks and benefits of diabetes medications.
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Affiliation(s)
- Elisabetta Patorno
- Division of Pharmacoepidemiology and Pharmacoeconomics, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, 1620 Tremont Street (Suite 3030), Boston, MA, 02120, USA,
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Rahmi Garcia RM, Rezende PC, Hueb W. Impact of hypoglycemic agents on myocardial ischemic preconditioning. World J Diabetes 2014; 5:258-266. [PMID: 24936247 PMCID: PMC4058730 DOI: 10.4239/wjd.v5.i3.258] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Accepted: 03/18/2014] [Indexed: 02/05/2023] Open
Abstract
Murry et al in 1986 discovered the intrinsic mechanism of profound protection called ischemic preconditioning. The complex cellular signaling cascades underlying this phenomenon remain controversial and are only partially understood. However, evidence suggests that adenosine, released during the initial ischemic insult, activates a variety of G protein-coupled agonists, such as opioids, bradykinin, and catecholamines, resulting in the activation of protein kinases, especially protein kinase C (PKC). This leads to the translocation of PKC from the cytoplasm to the sarcolemma, where it stimulates the opening of the ATP-sensitive K+ channel, which confers resistance to ischemia. It is known that a range of different hypoglycemic agents that activate the same signaling cascades at various cellular levels can interfere with protection from ischemic preconditioning. This review examines the effects of several hypoglycemic agents on myocardial ischemic preconditioning in animal studies and clinical trials.
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El Messaoudi S, Schreuder TH, Kengen RD, Rongen GA, van den Broek PH, Thijssen DHJ, Riksen NP. Impact of metformin on endothelial ischemia-reperfusion injury in humans in vivo: a prospective randomized open, blinded-endpoint study. PLoS One 2014; 9:e96062. [PMID: 24755906 PMCID: PMC3996005 DOI: 10.1371/journal.pone.0096062] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 04/01/2014] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Large prospective studies in patients with type 2 diabetes mellitus have demonstrated that metformin treatment improves cardiovascular prognosis, independent of glycemic control. Administration of metformin potently limits infarct size in murine models of myocardial infarction. This study examined, for the first time in humans, whether metformin limits ischemia-reperfusion (IR) injury in vivo using a well-validated forearm model of endothelial IR-injury. METHODS Twenty-eight healthy volunteers (age 41±6 years, 10 male/16 female) were randomized between pretreatment with metformin (500 mg three times a day for 3 days) or no treatment in a Prospective Randomized Open Blinded Endpoint study. Brachial artery flow mediated dilation (FMD) was measured before and after 20 minutes of forearm ischemia and 20 minutes of reperfusion. FMD analysis was performed offline by investigators blinded for the treatment arm. RESULTS Baseline FMD did not differ between metformin pretreatment and no pretreatment (6.9±3.6% and 6.1±3.5%, respectively, p = 0.27, n = 26). FMD was significantly lower after forearm IR in both treatment arms (4.4±3.3% and 4.3±2.8%, respectively, P<0.001 in both conditions). A linear mixed model analysis revealed that metformin treatment did not prevent the decrease in FMD by IR. CONCLUSION A 3 day treatment with metformin in healthy, middle-aged subjects does not protect against endothelial IR-injury, measured with brachial artery FMD after forearm ischemia. Further studies are needed to clarify what mechanism underlies the cardiovascular benefit of metformin treatment. TRIAL REGISTRATION ClinicalTrials.gov NCT01610401.
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Affiliation(s)
- Saloua El Messaoudi
- Department of Pharmacology-Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Tim H. Schreuder
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Roel D. Kengen
- Department of Pharmacology-Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Gerard A. Rongen
- Department of Pharmacology-Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of General Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Petra H. van den Broek
- Department of Pharmacology-Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Dick H. J. Thijssen
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
- Research Institute for Sports and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Niels P. Riksen
- Department of Pharmacology-Toxicology, Radboud University Medical Center, Nijmegen, The Netherlands
- Department of General Internal Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
- * E-mail:
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Landman GWD, de Bock GH, van Hateren KJJ, van Dijk PR, Groenier KH, Gans ROB, Houweling ST, Bilo HJG, Kleefstra N. Safety and efficacy of gliclazide as treatment for type 2 diabetes: a systematic review and meta-analysis of randomized trials. PLoS One 2014; 9:e82880. [PMID: 24533045 PMCID: PMC3922704 DOI: 10.1371/journal.pone.0082880] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Accepted: 10/28/2013] [Indexed: 11/23/2022] Open
Abstract
Objective and Design Gliclazide has been associated with a low risk of hypoglycemic episodes and beneficial long-term cardiovascular safety in observational cohorts. The aim of this study was to assess in a systematic review and meta-analysis of randomized controlled trials the safety and efficacy of gliclazide compared to other oral glucose-lowering agents (PROSPERO2013:CRD42013004156) Data Sources Medline, EMBASE, Clinicaltrials.gov, Trialregister.nl, Clinicaltrialsregister.eu and the Cochrane database. Selection Included were randomized studies of at least 12 weeks duration with the following outcomes: HbA1c change, incidence of severe hypoglycemia, weight change, cardiovascular events and/or mortality when comparing gliclazide with other oral blood glucose lowering drugs. Bias was assessed with the Cochrane risk of bias tool. The inverse variance random effects model was used. Results Nineteen trials were included; 3,083 patients treated with gliclazide and 3,155 patients treated with other oral blood glucose lowering drugs. There was a considerable amount of heterogeneity between and bias in studies. Compared to other glucose lowering agents except metformin, gliclazide was slightly more effective (−0.13% (95%CI: −0.25, −0.02, I2 55%)). One out of 2,387 gliclazide users experienced a severe hypoglycemic event, whilst also using insulin. There were 25 confirmed non-severe hypoglycemic events (2.2%) in 1,152 gliclazide users and 22 events (1.8%) in 1,163 patients in the comparator group (risk ratio 1.09 (95% CI: 0.20, 5.78, I2 77%)). Few studies reported differences in weight and none were designed to evaluate cardiovascular outcomes. Conclusions The methodological quality of randomized trials comparing gliclazide to other oral glucose lowering agents was poor and effect estimates on weight were limited by publication bias. The number of severe hypoglycemic episodes was extremely low, and gliclazide appears at least equally effective compared to other glucose lowering agents. None of the trials were designed for evaluating cardiovascular outcomes, which warrants attention in future randomized trials.
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Affiliation(s)
| | - Geertruide H. de Bock
- Department of Epidemiology, University Medical Centre Groningen, Groningen, The Netherlands
| | | | | | - Klaas H. Groenier
- Department of General Practice, University Medical Centre Groningen, Groningen, The Netherlands
| | - Rijk O. B. Gans
- Department Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
| | | | - Henk J. G. Bilo
- Diabetes Centre Zwolle, Zwolle, The Netherlands
- Department Internal Medicine, University Medical Centre Groningen, Groningen, The Netherlands
- Department of Internal Medicine, Isala Clinics, Zwolle, The Netherlands
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Weidman-Evans E, Metz SM, Evans JD. Cardiovascular risks and benefits with oral drugs for Type 2 diabetes mellitus. Expert Rev Clin Pharmacol 2014; 7:225-33. [PMID: 24490745 DOI: 10.1586/17512433.2014.885836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Type 2 diabetes mellitus affects approximately 321 million people worldwide. It is estimated that about half of these patients will die from cardiovascular complications. In spite of these statistics, medications for diabetes are approved based not on outcomes, but on surrogate markers such as blood glucose or glycosylated hemoglobin. In recent years, however, the safety of diabetes medications has come under scrutiny, and more studies are being undertaken to determine the effect(s) of the medications on actual outcomes. In this review the authors review available study results for all of the currently approved classes of oral medications for Type 2 diabetes, and discuss the possible mechanisms for the findings. More studies are necessary for many of these classes, however, to make definitive recommendations regarding their cardiovascular effects.
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Affiliation(s)
- Emily Weidman-Evans
- Department of Clinical and Administrative Sciences, University of Louisiana at Monroe College of Pharmacy, Louisiana 71201, LA, USA
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Ghotbi AA, Køber L, Finer N, James WPT, Sharma AM, Caterson I, Coutinho W, Van Gaal LF, Torp-Pedersen C, Andersson C. Association of hypoglycemic treatment regimens with cardiovascular outcomes in overweight and obese subjects with type 2 diabetes: a substudy of the SCOUT trial. Diabetes Care 2013; 36:3746-53. [PMID: 24089540 PMCID: PMC3816850 DOI: 10.2337/dc13-0027] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE To assess the association of hypoglycemic treatment regimens with cardiovascular adverse events and mortality in a large population of type 2 diabetic patients at increased cardiovascular risk. RESEARCH DESIGN AND METHODS This analysis included 8,192 overweight patients with type 2 diabetes from the Sibutramine Cardiovascular Outcomes (SCOUT) trial randomized to lifestyle intervention with or without sibutramine for up to 6 years. Patients were grouped according to hypoglycemic treatment at baseline. The primary end point was the time from randomization to the first occurrence of a primary outcome event (POE), nonfatal myocardial infarction, nonfatal stroke, resuscitation after cardiac arrest, or cardiovascular death. Multivariable Cox proportional hazards regression models were used to assess the impact of antiglycemic treatment on POE and all-cause mortality. RESULTS Treatments for type 2 diabetes were as follows: diet alone (n = 1,394 subjects), metformin monotherapy (n = 1,631), insulin monotherapy (n = 1,116), sulfonylurea monotherapy (n = 1,083), metformin plus sulfonylurea (n = 1,565), and metformin plus insulin (n = 1,000); 905 subjects experienced a POE and 708 died. Metformin monotherapy was associated with lower risk of POE than insulin (hazard ratio [HR], 0.74; 95% CI, 0.57-0.95; P = 0.02). Diet alone also was associated with lower risk of POE (HR, 0.65; 95% CI, 0.48-0.87; P = 0.004). Metformin monotherapy also was associated with lower mortality (HR, 0.73; 95% CI, 0.54-0.99; P < 0.05), whereas no other monotherapies or combination therapies were significantly associated with POE or all-cause mortality compared with insulin as monotherapy. CONCLUSIONS In obese patients with type 2 diabetes and high risk of cardiovascular disease, monotherapy with metformin or diet-only treatment was associated with lower risk of cardiovascular events than treatment with insulin.
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Nagendran J, Oudit GY, Bakal JA, Light PE, Dyck JRB, McAlister FA. Are users of sulphonylureas at the time of an acute coronary syndrome at risk of poorer outcomes? Diabetes Obes Metab 2013; 15:1022-8. [PMID: 23668425 DOI: 10.1111/dom.12126] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Revised: 03/24/2013] [Accepted: 05/07/2013] [Indexed: 01/08/2023]
Abstract
AIMS Adenosine triphosphate sensitive potassium (K(ATP)) channel activity is cardioprotective during ischaemia. One of the purported mechanisms for sulphonylurea adverse effects is through inhibition of these channels. The purpose of this study is to examine whether patients using K(ATP) channel inhibitors at the time of an acute coronary syndrome are at greater risk of death or heart failure (HF) than those not exposed. METHODS Using linked administrative databases we identified all adults who had an acute coronary syndrome between April 2002 and October 2006 (n = 21 023). RESULTS Within 30 days of acute coronary syndrome, 5.3% of our cohort died and 15.6% were diagnosed with HF. Individuals with diabetes exhibited significantly higher risk of death (adjusted OR: 1.20, 95% CI: 1.03-1.40) and death or HF (aOR: 1.73, 95% CI: 1.59-1.89) than individuals without diabetes. However, there was no significantly increased risk of death (aOR: 1.00, 95% CI: 0.76-1.33) or death/HF (aOR: 1.06, 95% CI: 0.89-1.26) in patients exposed to K(ATP) channel inhibitors versus patients not exposed to K(ATP) channel inhibitors prior to their acute coronary syndrome. CONCLUSIONS Diabetes is associated with an increased risk of death or HF within 30 days of an acute coronary syndrome. However, we did not find any excess risk of death or HF associated with use of K(ATP) channel inhibitors at the time of an acute coronary syndrome, raising doubts about the hypothesis that sulphonylureas inhibit the cardioprotective effects of myocardial K(ATP) channels.
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Affiliation(s)
- J Nagendran
- Division of Cardiac Surgery, Department of Surgery, Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada; Cardiovascular Research Centre, Faculty of Medicine and Dentistry, Mazankowski Alberta Heart Institute, University of Alberta, Edmonton, Alberta, Canada
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von Websky K, Reichetzeder C, Hocher B. Linagliptin as add-on therapy to insulin for patients with type 2 diabetes. Vasc Health Risk Manag 2013; 9:681-94. [PMID: 24204157 PMCID: PMC3818026 DOI: 10.2147/vhrm.s40035] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Type 2 diabetes mellitus (T2DM) is a highly prevalent, progressive disease that often is poorly controlled. The combination of an incretin-based therapy and insulin is a promising approach to optimize the management of glycemic control without hypoglycemia and weight gain. Linagliptin, a recently approved oral dipeptidyl peptidase-4 inhibitor, has a unique pharmacological profile. The convenient, once-daily dosing does not need adjustment in patients with hepatic and/or renal impairment. In clinical studies linagliptin shows an important reduction of blood glucose with an overall safety profile similar to that of placebo. So far, the combination of linagliptin and insulin has been tested in three major clinical studies in different populations. It has been shown that linagliptin is an effective and safe add-on therapy to insulin in patients with T2DM. The efficacy and safety of this combination was also shown in vulnerable, elderly T2DM patients and in patients with T2DM and renal impairment. Favorable effects regarding the counteraction of hypoglycemia make linagliptin especially interesting as an add-on therapy to insulin. This review aims to present the existing clinical studies on the efficacy and safety of linagliptin as add-on therapy to insulin in patients with T2DM in the context of current literature. Additionally, the possible advantages of linagliptin as an add-on therapy to insulin in relation to cardiovascular safety, patient-centered therapy and the prevention of hypoglycemia, are discussed.
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Affiliation(s)
- Karoline von Websky
- Institute of Nutritional Science, University of Potsdam, Potsdam-Rehbrücke, Germany
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Phung OJ, Schwartzman E, Allen RW, Engel SS, Rajpathak SN. Sulphonylureas and risk of cardiovascular disease: systematic review and meta-analysis. Diabet Med 2013; 30:1160-71. [PMID: 23663156 DOI: 10.1111/dme.12232] [Citation(s) in RCA: 106] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/08/2013] [Indexed: 12/13/2022]
Abstract
AIMS Sulphonylurea use has been linked with increased cardiovascular disease risk; however, previous studies have been inconsistent. Type 2 diabetes independently increases risk for cardiovascular disease, so understanding the link between longer-term use of anti-diabetic medications and cardiovascular disease has important clinical implications. METHODS Literature search in MEDLINE and CENTRAL was conducted throughout December 2011 for clinical and observational studies that reported the association between sulphonylurea and cardiovascular disease events. Ratios (relative risk, odds ratios or hazard ratios) adjusted for potential confounders (concomitant medications, baseline cardiovascular risk, diabetes severity) were pooled using a random-effects model to yield relative risks and associated 95% confidence intervals. RESULTS This meta-analysis included 33 studies (n = 1,325,446 patients), followed for a range of 0.46-10.4 years. In all studies, compared with other oral diabetes drugs, sulphonylurea use was associated with a significantly increased risk of cardiovascular death (relative risk 1.27, 95% confidence interval 1.18-1.34, n = 27 comparisons) and composite cardiovascular event (including myocardial infarction, stroke, cardiovascular-related hospitalization or cardiovascular death) (relative risk 1.10, 95% confidence interval 1.04-1.16, n = 43 comparisons). In studies comparing sulphonylurea vs. metformin, these relative risks were 1.26 (95% confidence interval 1.17-1.35, n = 17 comparisons) and 1.18 (95%confidence interval 1.13-1.24, n = 16 comparisons), respectively. CONCLUSIONS Results suggest that sulphonylurea use may elevate the risk of cardiovascular disease among patients with diabetes. This meta-analysis expands the pool of studies evaluating cardiovascular mortality compared with prior observations while using adjusted estimates, and assessing an additional outcome of a composite cardiovascular event. This finding warrants consideration in clinical practice when other treatment options may be available.
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Affiliation(s)
- O J Phung
- Western University of Health Sciences, College of Pharmacy, Pomona; Western Diabetes Institute, Pomona, CA
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Forst T, Hanefeld M, Jacob S, Moeser G, Schwenk G, Pfützner A, Haupt A. Association of sulphonylurea treatment with all-cause and cardiovascular mortality: a systematic review and meta-analysis of observational studies. Diab Vasc Dis Res 2013; 10:302-14. [PMID: 23291340 DOI: 10.1177/1479164112465442] [Citation(s) in RCA: 70] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
We conducted a meta-analysis of cohort and case-control studies to evaluate all-cause and cardiovascular (CV) mortality of patients with type 2 diabetes mellitus (T2DM) who received sulphonylurea (SU) treatment, when compared to any other diabetes treatment. Only studies reporting raw data on mortality during SU treatment were included. Data were combined using random-effects (RE) models. Unadjusted odds ratios (ORs) are presented. Of 4991 publication titles and abstracts reviewed, 20 studies (n = 551,912 patients) were included. For cohort studies (n = 276,050), patients receiving SU monotherapy or combination treatment had significantly higher all-cause and CV mortality risks compared to any non-SU treatment [all-cause, 13 studies: OR = 1.92, 95% confidence interval (CI) = 1.48-2.49; CV, 5 studies: OR = 2.72, 95% CI = 1.95-3.79]. Validity was limited by the high treatment group heterogeneity (I (2) > 90%) and study-inherent biases/design differences. In conclusion, patients receiving SU treatment had increased all-cause and CV mortality risks. However, the meta-analysis was limited by the high heterogeneity of non-randomized studies.
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Affiliation(s)
- Thomas Forst
- Institute for Clinical Research and Development (IKFE), Mainz, Germany.
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Hong J, Zhang Y, Lai S, Lv A, Su Q, Dong Y, Zhou Z, Tang W, Zhao J, Cui L, Zou D, Wang D, Li H, Liu C, Wu G, Shen J, Zhu D, Wang W, Shen W, Ning G. Effects of metformin versus glipizide on cardiovascular outcomes in patients with type 2 diabetes and coronary artery disease. Diabetes Care 2013; 36:1304-11. [PMID: 23230096 PMCID: PMC3631843 DOI: 10.2337/dc12-0719] [Citation(s) in RCA: 241] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The two major classes of antidiabetic drugs, sulfonylureas and metformin, may differentially affect macrovascular complications and mortality in diabetic patients. We compared the long-term effects of glipizide and metformin on the major cardiovascular events in type 2 diabetic patients who had a history of coronary artery disease (CAD). RESEARCH DESIGN AND METHODS This study is a multicenter, randomized, double-blind, placebo-controlled clinical trial. A total of 304 type 2 diabetic patients with CAD, mean age = 63.3 years (range, 36-80 years), were enrolled. Participants were randomly assigned to receive either glipizide (30 mg daily) or metformin (1.5 g daily) for 3 years. The primary end points were times to the composite of recurrent cardiovascular events, including death from a cardiovascular cause, death from any cause, nonfatal myocardial infarction, nonfatal stroke, or arterial revascularization. RESULTS At the end of study drug administration, both groups achieved a significant decrease in the level of glycated hemoglobin (7.1% in the glipizide group and 7.0% in the metformin group). At a median follow-up of 5.0 years, 91 participants had developed 103 primary end points. Intention-to-treat analysis showed an adjusted hazard ratio (HR) of 0.54 (95% CI 0.30-0.90; P = 0.026) for the composites of cardiovascular events among the patients that received metformin, compared with glipizide. The secondary end points and adverse events were not significantly different between the two groups. CONCLUSIONS Treatment with metformin for 3 years substantially reduced major cardiovascular events in a median follow-up of 5.0 years compared with glipizide. Our results indicated a potential benefit of metformin therapy on cardiovascular outcomes in high-risk patients.
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Affiliation(s)
- Jie Hong
- Shanghai Jiao Tong University School of Medicine, Shanghai, China
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English P. Insulin: standard therapy following oral hypoglycaemic failure in type 2 diabetes? Br J Hosp Med (Lond) 2013; 74:192-7. [PMID: 23571388 DOI: 10.12968/hmed.2013.74.4.192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The cost burden of managing type 2 diabetes and its complications could overwhelm the NHS in the next 20 years. The available therapies should be used wisely to conserve resource and maintain health. This article outlines a strategy for use of the available treatments.
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Affiliation(s)
- Patrick English
- Department of Diabetes and Endocrinology, Derriford Hospital, Plymouth, UK.
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Scheen AJ, Paquot N. Metformin revisited: a critical review of the benefit-risk balance in at-risk patients with type 2 diabetes. DIABETES & METABOLISM 2013; 39:179-90. [PMID: 23528671 DOI: 10.1016/j.diabet.2013.02.006] [Citation(s) in RCA: 110] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Accepted: 02/12/2013] [Indexed: 12/18/2022]
Abstract
Metformin is unanimously considered a first-line glucose-lowering agent. Theoretically, however, it cannot be prescribed in a large proportion of patients with type 2 diabetes because of numerous contraindications that could lead to an increased risk of lactic acidosis. Various observational data from real-life have shown that many diabetic patients considered to be at risk still receive metformin and often without appropriate dose adjustment, yet apparently with no harm done and particularly no increased risk of lactic acidosis. More interestingly, recent data have suggested that type 2 diabetes patients considered at risk because of the presence of traditional contraindications may still derive benefit from metformin therapy with reductions in morbidity and mortality compared with other glucose-lowering agents, especially sulphonylureas. The present review analyzes the benefit-risk balance of metformin therapy in special populations, namely, patients with stable coronary artery disease, acute coronary syndrome or myocardial infarction, congestive heart failure, renal impairment or chronic kidney disease, hepatic dysfunction and chronic respiratory insufficiency, all conditions that could in theory increase the risk of lactic acidosis. Special attention is also paid to elderly patients with type 2 diabetes, a population that is growing rapidly, as older patients can accumulate several comorbidities classically considered contraindications to the use of metformin. A review of the recent scientific literature suggests that reassessment of the contraindications of metformin is now urgently needed to prevent physicians from prescribing the most popular glucose-lowering therapy in everyday clinical practice outside of the official recommendations.
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Affiliation(s)
- A J Scheen
- Division of Diabetes, Nutrition and Metabolic Disorders and Division of Clinical Pharmacology, Department of Medicine, CHU Sart-Tilman (B35), University of Liège, 4000 Liège, Belgium.
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El Messaoudi S, Rongen GA, Riksen NP. Metformin Therapy in Diabetes: The Role of Cardioprotection. Curr Atheroscler Rep 2013; 15:314. [DOI: 10.1007/s11883-013-0314-z] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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Engel SS, Golm GT, Shapiro D, Davies MJ, Kaufman KD, Goldstein BJ. Cardiovascular safety of sitagliptin in patients with type 2 diabetes mellitus: a pooled analysis. Cardiovasc Diabetol 2013; 12:3. [PMID: 23286208 PMCID: PMC3585887 DOI: 10.1186/1475-2840-12-3] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 12/06/2012] [Indexed: 01/09/2023] Open
Abstract
Objective To compare the incidence of cardiovascular events and mortality in patients with type 2 diabetes mellitus treated with sitagliptin or non-sitagliptin comparators. Methods A post hoc assessment of cardiovascular safety in 14,611 patients was performed by pooling data from 25 double-blind studies, which randomised patients at baseline to sitagliptin 100 mg/day or a non-sitagliptin comparator (i.e., non-exposed). Included studies were limited to those at least 12 weeks in duration (range: 12 to 104 weeks). Patient-level data were used in this analysis of major adverse cardiovascular events (MACE) including ischaemic events and cardiovascular deaths. Analyses were performed in three cohorts: the entire 25-study cohort, the cohort from placebo-controlled portions of studies (n=19), and the cohort from studies comparing sitagliptin to a sulphonylurea (n=3). Results In the entire cohort analysis, 78 patients had at least 1 reported MACE-related event, with 40 in the sitagliptin group and 38 in the non-exposed group. The exposure-adjusted incidence rate was 0.65 per 100 patient-years in the sitagliptin group and 0.74 in the non-exposed group (incidence rate ratio = 0.83 [95% confidence interval (CI): 0.53, 1.30]). In the analysis comparing sitagliptin to placebo, the exposure-adjusted incidence rate was 0.80 per 100-patient-years with sitagliptin and 0.76 with placebo (incidence rate ratio = 1.01 [95% CI: 0.55, 1.86]). In the analysis comparing sitagliptin to sulphonylurea, the exposure-adjusted incidence rate was 0.00 per 100 patient-years with sitagliptin and 0.86 with sulphonylurea (incidence rate ratio = 0.00 [95% CI: 0.00, 0.31]). Conclusion A pooled analysis of 25 randomised clinical trials does not indicate that treatment with sitagliptin increases cardiovascular risk in patients with type 2 diabetes mellitus. In a subanalysis, a higher rate of cardiovascular-related events was associated with sulphonylurea relative to sitagliptin.
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Jarrard RE, Wang Y, Salyer AE, Pratt EPS, Soderling IM, Guerra ML, Lange AM, Broderick HJ, Hockerman GH. Potentiation of sulfonylurea action by an EPAC-selective cAMP analog in INS-1 cells: comparison of tolbutamide and gliclazide and a potential role for EPAC activation of a 2-APB-sensitive Ca2+ influx. Mol Pharmacol 2012; 83:191-205. [PMID: 23071106 DOI: 10.1124/mol.112.081943] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Tolbutamide and gliclazide block the K(ATP) channel K(ir)6.2/Sur1, causing membrane depolarization and stimulating insulin secretion in pancreatic beta cells. We examined the ability of the EPAC-selective cAMP analog 8-pCPT-2'-O-Me-cAMP-AM to potentiate the action of these drugs and the mechanism that might account for it. Insulin secretion stimulated by both 200 μM tolbutamide and 20 μM gliclazide, concentrations that had equivalent effects on membrane potential, was inhibited by thapsigargin (1 μM) or the L-type Ca(2+) channel blocker nicardipine (2 μM) and was potentiated by 8-pCPT-2'-O-Me-cAMP-AM at concentrations ≥2 μM in INS-1 cells. Ca(2+) transients stimulated by either tolbutamide or gliclazide were inhibited by thapsigargin or nicardipine and were significantly potentiated by 8-pCPT-2'-O-Me-cAMP-AM at 5 μM but not 1 μM. Both tolbutamide and gliclazide stimulated phospholipase C activity; however, only gliclazide did so independently of its activity at K(ATP) channels, and this activity was partially inhibited by pertussis toxin. 8-pCPT-2'-O-Me-cAMP-AM alone (5 μM) did not stimulate insulin secretion, but did increase intracellular Ca(2+) concentration significantly, and this activity was inhibited by 25 μM 2-aminoethoxydiphenylborate (2-APB) or the removal of extracellular Ca(2+). 8-pCPT-2'-O-Me-cAMP-AM potentiation of insulin secretion stimulated by tolbutamide was markedly inhibited by 2-APB (25 μM) and enhanced by the PKC inhibitor bisindolylmaleimide I (1 μM). Our data demonstrate that the actions of both tolbutamide and gliclazide are strongly potentiated by 8-pCPT-2'-O-Me-cAMP-AM, that gliclazide can stimulate phospholipase C activity via a partially pertussis toxin-sensitive mechanism, and that 8-pCPT-2'-O-Me-cAMP-AM potentiation of tolbutamide action may involve activation of a 2-APB-sensitive Ca(2+) influx.
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Affiliation(s)
- Rachel E Jarrard
- Department of Medicinal Chemistry and Molecular Pharmacology, Purdue University, West Lafayette, Indiana, USA
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Miki T, Itoh T, Sunaga D, Miura T. Effects of diabetes on myocardial infarct size and cardioprotection by preconditioning and postconditioning. Cardiovasc Diabetol 2012; 11:67. [PMID: 22694800 PMCID: PMC3461466 DOI: 10.1186/1475-2840-11-67] [Citation(s) in RCA: 121] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Accepted: 06/06/2012] [Indexed: 01/25/2023] Open
Abstract
In spite of the current optimal therapy, the mortality of patients with ischemic heart disease (IHD) remains high, particularly in cases with diabetes mellitus (DM) as a co-morbidity. Myocardial infarct size is a major determinant of prognosis in IHD patients, and development of a novel strategy to limit infarction is of great clinical importance. Ischemic preconditioning (PC), postconditioning (PostC) and their mimetic agents have been shown to reduce infarct size in experiments using healthy animals. However, a variety of pharmacological agents have failed to demonstrate infarct size limitation in clinical trials. One of the possible reasons for the discrepancy between the results of animal experiments and clinical trials is that co-morbidities, including DM, modified myocardial responses to ischemia/reperfusion and to cardioprotective agents. Here we summarize observations of the effects of DM on myocardial infarct size and ischemic PC and PostC and discuss perspectives for protection of DM hearts.
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Affiliation(s)
- Takayuki Miki
- Second Department of Internal Medicine, Sapporo Medical University School of Medicine, South-1 West-16, Sapporo 060-8543, Japan.
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Cobble ME, Frederich R. Saxagliptin for the treatment of type 2 diabetes mellitus: assessing cardiovascular data. Cardiovasc Diabetol 2012; 11:6. [PMID: 22248301 PMCID: PMC3277488 DOI: 10.1186/1475-2840-11-6] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2011] [Accepted: 01/16/2012] [Indexed: 12/13/2022] Open
Abstract
Patients with type 2 diabetes mellitus (T2DM) are at high risk for cardiovascular (CV) disease; however, conclusive evidence that glycemic control leads to improved cardiovascular outcomes is lacking. Saxagliptin is a potent, selective dipeptidyl peptidase-4 inhibitor approved as an adjunct to diet and exercise to improve glycemic control in adults with T2DM. Saxagliptin was evaluated in a series of phase III trials as monotherapy; add-on therapy to metformin, a sulfonylurea, or a thiazolidinedione; and as initial therapy in combination with metformin. Saxagliptin consistently improved glycemic control (as reflected by significant decreases in glycated hemoglobin, fasting plasma glucose, and postprandial glucose compared with controls) and was generally well tolerated. In these analyses, saxagliptin had clinically neutral effects on body weight, blood pressure, lipid levels, and other markers of CV risk compared with controls. A retrospective meta-analysis of 8 phase II and phase III trials found no evidence that saxagliptin increases CV risk in patients with T2DM (Cox proportional hazard ratio, 0.43; 95% CI, 0.23-0.80 for major adverse cardiovascular events retrospectively adjudicated). Instead, it raised the hypothesis that saxagliptin may reduce the risk of major adverse CV events. A long-term CV outcome trial, Saxagliptin Assessment of Vascular Outcomes Recorded in Patients with Diabetes Mellitus-THrombolysis in Myocardial Infarction 53 (SAVOR-TIMI 53) is currently ongoing to determine whether saxagliptin reduces CV risk in T2DM.
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Apovian CM. Management of diabetes across the course of disease: minimizing obesity-associated complications. Diabetes Metab Syndr Obes 2011; 4:353-69. [PMID: 22135499 PMCID: PMC3224657 DOI: 10.2147/dmso.s24022] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Obesity increases the risk for developing type 2 diabetes mellitus (T2DM) and this in turn correlates with an elevated probability of long-term diabetes complications once diabetes is established. Interventions aimed at lowering weight via changes in diet and lifestyle have repeatedly been shown to improve glycemic control in patients with T2DM and even to reverse early disease. Weight gain, a potential side effect of treatment for patients with T2DM, is also an important concern, and it has been noted that weight increases associated with antidiabetes therapy may blunt cardiovascular risk reductions achieved by decreasing blood glucose. Among older agents, metformin and acarbose have the lowest risk for weight gain, while sulfonylureas, meglitinides, and thiazolidinediones are all associated with weight increases. Clinical trial results have also consistently demonstrated that treatment with glucagon-like peptide-1 receptor agonists and amylin lowers weight, and that dipeptidyl peptidase-4 inhibitors are weight neutral in patients with T2DM. Conventional human insulin formulations are known to increase weight in patients with T2DM. However, some insulin analogs, particularly insulin detemir, have lower liability for this adverse event. The use of both pharmacologic and surgical therapies aimed at treating obesity rather than lowering blood glucose have the potential to improve glycemic control and even resolve T2DM in some patients.
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Affiliation(s)
- Caroline M Apovian
- Medicine and Pediatrics, Boston University School of Medicine; Nutrition and Weight Management Center; and Section of Endocrinology, Diabetes and Nutrition, Department of Medicine, Boston Medical Center, Boston, MA, USA
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Andersson C, Gislason GH, Jørgensen CH, Hansen PR, Vaag A, Sørensen R, Mérie C, Olesen JB, Weeke P, Schmiegelow M, Norgaard ML, Køber L, Torp-Pedersen C. Comparable long-term mortality risk associated with individual sulfonylureas in diabetes patients with heart failure. Diabetes Res Clin Pract 2011; 94:119-25. [PMID: 21831467 DOI: 10.1016/j.diabres.2011.07.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2011] [Revised: 06/29/2011] [Accepted: 07/07/2011] [Indexed: 12/25/2022]
Abstract
AIMS The aim was to investigate the outcomes of individual sulfonylureas in patients with heart failure (HF). METHODS All patients hospitalized with HF for the first time in 1997-2006, alive 30 days after discharge, and who received anti-diabetic monotherapy with glimepiride (n=1097), glibenclamide (glyburide) (n=1031), glipizide (n=557), gliclazide (n=251), or tolbutamide (n=541) were identified from nationwide registers. Risk of all-cause mortality was assessed by multivariable Cox regression models. RESULTS Over the median observational time of 744 (Inter Quartile Range 268-1451) days, 2242 patients (64%) died. The analysis demonstrated similar hazard ratio (HR) for mortality for treatment with glimepiride (1.10 [95% confidence interval 0.92-1.33]), glibenclamide (1.12 [0.93-1.34]), glipizide (1.14 [0.93-1.38]), tolbutamide (1.04 [0.85-1.26]), and gliclazide (reference). Grouped according to pancreatic specificity, i.e., with tolbutamide, glipizide, and gliclazide as specific, and glibenclamide, and glimepiride as non-specific agents, no differential prognosis was found between the two groups (HR 1.04 [0.96-1.14], for non-specific, compared to pancreas specific agents). The prognosis was not dependent on prior acute myocardial infarction or ischemic heart disease (p for interactions >0.3). CONCLUSIONS In current clinical practice, it is unlikely that there are considerable differences in risk of mortality associated with individual sulfonylureas in patients with heart failure.
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Affiliation(s)
- Charlotte Andersson
- Department of Cardiology, Copenhagen University Hospital, Gentofte, Hellerup, Denmark.
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Tschöpe D, Bramlage P, Binz C, Krekler M, Plate T, Deeg E, Gitt AK. Antidiabetic pharmacotherapy and anamnestic hypoglycemia in a large cohort of type 2 diabetic patients--an analysis of the DiaRegis registry. Cardiovasc Diabetol 2011; 10:66. [PMID: 21756359 PMCID: PMC3162488 DOI: 10.1186/1475-2840-10-66] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 07/14/2011] [Indexed: 01/07/2023] Open
Abstract
Background We aimed to identify predictors of anamnestic hypoglycaemia in type-2 diabetic patients on oral mono- or dual oral combination antidiabetic pharmacotherapy. Methods DiaRegis is a prospective registry in type-2 diabetic patients in primary care. Odds ratios (OR) with 95% confidence intervals were determined from univariate logistic regression. Using multivariate logistic regression analysis with stepwise backward selection at an alpha of 0.05 independent predictors of hypoglycaemia were determined. Results 3,808 patients had data on hypoglycaemia available (median age 65.9 years, 46.6% female). 10.8% had at least one anamnestic hypoglycaemic episode within the previous 12 months. Patients with hypoglycaemia received more sulfonylureas (OR 2.16; 95%CI 1.75-2.67) and less metformin (OR 0.64; 95%CI 0.50-0.82). On top of metformin, patients with thiazolidine (OR 0.50; 95%CI 0.28-0.89) and DPP-4 inhibitor use (OR 0.34; 95%CI 0.16-0.70) had a decreased risk for hypoglycaemia while it was again increased with sulfonylureas (OR 2.08; 95%CI 1.44-2.99). Age < 65 years was an independent predictor of a reduced hypoglycaemia incidence (OR 0.76; 95%CI 0.59-0.96), low HbA1c (OR 1.68; 95%CI 1.31-2.14), stroke/TIA (OR 1.72; 95%CI 1.08-2.72), heart failure (OR 1.77; 95%CI 1.28-2.45), and the use of sulfonylureas (OR 2.58; 95%CI 2.03-3.29) were independent predictors of increased risk. Conclusions The results indicate that the risk of hypoglycaemia might be substantially reduced by carefully selecting antidiabetic pharmacotherapy in patients with type-2 diabets in primary care.
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Affiliation(s)
- Diethelm Tschöpe
- Herz- und Diabeteszentrum Nordrhein-Westfalen in Bad Oeynhausen, Universitätsklinik der Ruhr Universität, Bochum, Germany.
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Norgaard ML, Andersson C, Hansen PR, Andersen SS, Vaag A, Schramm TK, Folke F, Køber L, Torp-Pedersen C, Gislason GH. Temporal trends in the initiation of glucose-lowering medications after a first-time myocardial infarction - a nationwide study between 1997 and 2006. Cardiovasc Diabetol 2011; 10:5. [PMID: 21247456 PMCID: PMC3031215 DOI: 10.1186/1475-2840-10-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2010] [Accepted: 01/19/2011] [Indexed: 02/02/2023] Open
Abstract
Background Type 2 diabetes is a well-established risk factor for cardiovascular disease and is common among patients with acute myocardial infarction (MI). The extent to which patients with first-time MI develop diabetes requiring glucose-lowering medications (GLM) is largely unknown. The aim of the study was to investigate temporal trends in the initiation of GLM among patients discharged after first-time MI. Methods All Danish residents aged ≥ 30 years without prior diabetes hospitalized with first-time MI between 1997 and 2006 were identified by individual-level-linkage of nationwide registers. Initiation of GLM during follow-up was assessed by claimed prescriptions from pharmacies. Temporal trends in initiation of GLM were assessed by incidence rate calculations in the MI population as in the general population. Multivariable Cox proportional-hazard models were used to investigate the likelihood of initiating GLM within a year post-MI. Results The population comprised 66,788 patients. Among these patients 3962 patients initiated GLM, of whom 1567 started within one year post-MI. An increase in incidence rates of GLM initiation in the MI population from 19.6 per 1000 person years in 1997 to approximately 27.6 in 2001 was demonstrated. After 2001 the incidence rates stabilized. A similar trend was observed in the general population where the incidence rates increased from 2.8 in 1997 to 4.0 in 2004 and then stabilized. Conclusion Our study demonstrated an increase in incidence rates of GLM initiation within the first year post- MI. A similar trend was observed in the general population suggesting that the increase in GLM among MI patients was primarily the effect of a general increased awareness of diabetes. From a public heath perspective, this study underscores a continuous need for diagnostic and therapeutic improvement in the care of MI patients that develop diabetes.
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Affiliation(s)
- Mette L Norgaard
- Department of Cardiology, University Hospital of Copenhagen, Gentofte, Denmark.
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