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  • Title: Cardiovascular effects of non-insulin glucose-lowering agents: a comprehensive review of trial evidence and potential cardioprotective mechanisms.
    Author: Savarese G, Butler J, Lund LH, Bhatt DL, Anker SD.
    Journal: Cardiovasc Res; 2022 Jul 27; 118(10):2231-2252. PubMed ID: 34390570.
    Abstract:
    Type 2 diabetes mellitus (T2DM) is highly prevalent and associated with a two-fold increased mortality, mostly explained by cardiovascular diseases. Trial evidence on older glucose-lowering agents such as metformin and sulfonylureas is limited in terms of cardiovascular efficacy. Since 2008, after rosiglitazone was observed to increase the risk of myocardial infarction and heart failure (HF), cardiovascular outcome trials (CVOTs) have been required by regulators for licensing new glucose-lowering agents. In the following CVOTs, dipeptidyl peptidase 4 inhibitors (DPP4i) have been shown to be safe but not to improve mortality/morbidity, except for saxagliptin which increased the risk of HF. Several glucagon-like peptide-1 receptor agonists (GLP1-Ra) and sodium-glucose cotransporter-2 inhibitors (SGLT2i) have been demonstrated to reduce the risk of cardiovascular mortality and morbidity. SGLT2i have shown a class effect for the reduction in risk of HF events in patients with T2DM, leading to trials testing their efficacy/safety in HF regardless of T2DM. In the DAPA-HF and the EMPEROR-Reduced trials dapagliflozin and empagliflozin, respectively, improved cardiovascular mortality/morbidity in patients with HF with reduced ejection fraction (HFrEF), with and without T2DM. Therefore, these drugs are now key part of HFrEF pharmacotherapy. In the SOLOIST-WHF, sotagliflozin reduced cardiovascular mortality/morbidity in patients with T2DM and a recent acute episode of HF regardless of ejection fraction (EF). In the EMPEROR-Preserved, empagliflozin reduced CV mortality/morbidity in patients with heart failure with mildly reduced (HFmrEF) and preserved (HFpEF) EF regardless of comorbid T2DM. The DELIVER is currently testing dapagliflozin in patients with HFmrEF and HFrEF. A strong renal protective role of SGLT2i has also emerged in trials enrolling patients with and without T2DM.
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