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      Empagliflozin and Progression of Kidney Disease in Type 2 Diabetes

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          Abstract

          Diabetes confers an increased risk of adverse cardiovascular and renal events. In the EMPA-REG OUTCOME trial, empagliflozin, a sodium-glucose cotransporter 2 inhibitor, reduced the risk of major adverse cardiovascular events in patients with type 2 diabetes at high risk for cardiovascular events. We wanted to determine the long-term renal effects of empagliflozin, an analysis that was a prespecified component of the secondary microvascular outcome of that trial.

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          Most cited references16

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          Multifactorial intervention and cardiovascular disease in patients with type 2 diabetes.

          Cardiovascular morbidity is a major burden in patients with type 2 diabetes. In the Steno-2 Study, we compared the effect of a targeted, intensified, multifactorial intervention with that of conventional treatment on modifiable risk factors for cardiovascular disease in patients with type 2 diabetes and microalbuminuria. The primary end point of this open, parallel trial was a composite of death from cardiovascular causes, nonfatal myocardial infarction, nonfatal stroke, revascularization, and amputation. Eighty patients were randomly assigned to receive conventional treatment in accordance with national guidelines and 80 to receive intensive treatment, with a stepwise implementation of behavior modification and pharmacologic therapy that targeted hyperglycemia, hypertension, dyslipidemia, and microalbuminuria, along with secondary prevention of cardiovascular disease with aspirin. The mean age of the patients was 55.1 years, and the mean follow-up was 7.8 years. The decline in glycosylated hemoglobin values, systolic and diastolic blood pressure, serum cholesterol and triglyceride levels measured after an overnight fast, and urinary albumin excretion rate were all significantly greater in the intensive-therapy group than in the conventional-therapy group. Patients receiving intensive therapy also had a significantly lower risk of cardiovascular disease (hazard ratio, 0.47; 95 percent confidence interval, 0.24 to 0.73), nephropathy (hazard ratio, 0.39; 95 percent confidence interval, 0.17 to 0.87), retinopathy (hazard ratio, 0.42; 95 percent confidence interval, 0.21 to 0.86), and autonomic neuropathy (hazard ratio, 0.37; 95 percent confidence interval, 0.18 to 0.79). A target-driven, long-term, intensified intervention aimed at multiple risk factors in patients with type 2 diabetes and microalbuminuria reduces the risk of cardiovascular and microvascular events by about 50 percent. Copyright 2003 Massachusetts Medical Society
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            The intrarenal renin-angiotensin system: from physiology to the pathobiology of hypertension and kidney disease.

            In recent years, the focus of interest on the role of the renin-angiotensin system (RAS) in the pathophysiology of hypertension and organ injury has changed to a major emphasis on the role of the local RAS in specific tissues. In the kidney, all of the RAS components are present and intrarenal angiotensin II (Ang II) is formed by independent multiple mechanisms. Proximal tubular angiotensinogen, collecting duct renin, and tubular angiotensin II type 1 (AT1) receptors are positively augmented by intrarenal Ang II. In addition to the classic RAS pathways, prorenin receptors and chymase are also involved in local Ang II formation in the kidney. Moreover, circulating Ang II is actively internalized into proximal tubular cells by AT1 receptor-dependent mechanisms. Consequently, Ang II is compartmentalized in the renal interstitial fluid and the proximal tubular compartments with much higher concentrations than those existing in the circulation. Recent evidence has also revealed that inappropriate activation of the intrarenal RAS is an important contributor to the pathogenesis of hypertension and renal injury. Thus, it is necessary to understand the mechanisms responsible for independent regulation of the intrarenal RAS. In this review, we will briefly summarize our current understanding of independent regulation of the intrarenal RAS and discuss how inappropriate activation of this system contributes to the development and maintenance of hypertension and renal injury. We will also discuss the impact of antihypertensive agents in preventing the progressive increases in the intrarenal RAS during the development of hypertension and renal injury.
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              Empagliflozin monotherapy with sitagliptin as an active comparator in patients with type 2 diabetes: a randomised, double-blind, placebo-controlled, phase 3 trial.

              We aimed to investigate the efficacy and tolerability of empagliflozin, an oral, potent, and selective inhibitor of sodium-glucose co-transporter 2, in patients with type 2 diabetes who had not received drug treatment in the preceding 12 weeks. In our multicentre, randomised, placebo-controlled, phase 3 trial, we enrolled adults (aged ≥18 years) who had not received oral or injected anti-diabetes treatment in the previous 12 weeks. Eligible patients had HbA1c concentrations of 7-10%. We randomly allocated patients (1:1:1:1) with a computer-generated random sequence, stratified by region, HbA1c, and estimated glomerular filtration rate at screening, to placebo, empagliflozin 10 mg, empagliflozin 25 mg, or sitagliptin 100 mg once daily for 24 weeks. Patients and investigators were masked to treatment assignment. The primary endpoint was change from baseline in HbA1c at week 24 by ANCOVA in all randomly allocated patients who were treated with at least one dose of study drug and had a baseline HbA1c value. This study is completed and registered with ClinicalTrials.gov, number NCT01177813. Between Aug 12, 2010, and March 19, 2012, we randomly allocated 228 patients to receive placebo, 224 to receive empagliflozin 10 mg, 224 to receive empagliflozin 25 mg, and 223 to receive sitagliptin. Compared with placebo, adjusted mean differences in change from baseline HbA1c at week 24 were -0·74% (95% CI -0·88 to -0·59; p<0·0001) for empagliflozin 10 mg, -0·85% (-0·99 to -0·71; p<0·0001) for empagliflozin 25 mg, and -0·73% (-0·88 to -0·59; p<0·0001) for sitagliptin. 140 (61%) patients in the placebo group reported adverse events (four [2%] severe and six [3%] serious), as did 123 (55%) patients in the empagliflozin 10 mg group (eight [4%] severe and eight [4%] serious), 135 (60%) patients in the empagliflozin 25 mg group (seven [3%] severe and five [2%] serious), and 119 (53%) patients in the sitagliptin group (five [2%] severe and six [3%] serious). Empagliflozin provides a tolerable and efficacious strategy to reduce HbA1c in patients with type 2 diabetes who had not previously received drug treatment. Boehringer Ingelheim and Eli Lilly. Copyright © 2013 Elsevier Ltd. All rights reserved.
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                Author and article information

                Journal
                New England Journal of Medicine
                N Engl J Med
                Massachusetts Medical Society
                0028-4793
                1533-4406
                July 28 2016
                July 28 2016
                : 375
                : 4
                : 323-334
                Article
                10.1056/NEJMoa1515920
                27299675
                d6103548-3d55-4c57-aa07-4edc93f3b7fa
                © 2016
                History

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