Publications by authors named "Darren McGuire"

Chronic kidney disease (CKD) is a prevalent and progressive condition associated with significant mortality and morbidity. Diabetes is a common cause of CKD, and both diabetes and CKD increase the risk of cardiovascular disease (CVD), the leading cause of death in individuals with CKD. This review will discuss the importance of early detection of CKD and prompt pharmacological intervention to slow CKD progression and delay the development of CVD for improving outcomes.

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Aims: Sodium-glucose co-transporter-2 (SGLT2) inhibitors improve health status and outcomes in the setting of heart failure (HF) across the range of ejection fraction (EF). Baseline kidney disease is common in HF, complicates HF management and is strongly linked to worse health status. This study aimed to assess whether the treatment effects of dapagliflozin on health status vary based on estimated glomerular filtration rate (eGFR).

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SGLT-2i and GLP-1RA are recommended for persons with type 2 diabetes and atherosclerotic cardiovascular disease (ASCVD) but are underused in clinical practice. The COORDINATE-Diabetes randomized clincal trial evaluated a multi-faceted intervention to increase the use of evidence-based therapies for reducing cardiovascular risk among participants with diabetes and atherosclerotic cardiovascular disease. This analysis reports the discontinuation rate of SGLT-2i and GLP-1RA in follow up and summarises the clinician-reported reasons underlying these decisions.

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Heart transplant (HT) recipients experience high rates of cardiometabolic disease. Novel therapies targeting hyperlipidemia, diabetes, and obesity, including proprotein convertase subtilisin/kexin inhibitors (PCSK9i), sodium-glucose cotransporter-2 (SGLT2) inhibitors, and glucagon-like peptide-1 (GLP-1) agonists are increasingly used for cardiometabolic risk mitigation in the general population. However, limited data exist to support the use of these agents in patients who have undergone heart transplantation.

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Article Synopsis
  • The study investigates how SGLT2 inhibitors, particularly dapagliflozin, affect metabolism in patients with heart failure (HF) differing by ejection fraction (EF), focusing on ketone and fatty acid changes.
  • It analyzed data from two trials involving 527 participants, using metabolomic profiling to identify the effects of dapagliflozin on various metabolites over 12 weeks.
  • The findings revealed that dapagliflozin increased certain metabolites associated with ketosis and acylcarnitines but had less effect on amino acids, showing varying impacts depending on the patient's left ventricular ejection fraction.
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  • SGLT2 inhibitors like sotagliflozin show promise in improving health status for heart failure patients, but effects of SGLT1/SGLT2 inhibition remain unclear.* -
  • In the SOLOIST-WHF trial, patients taking sotagliflozin after a heart failure episode experienced a significant improvement in their Kansas City Cardiomyopathy Questionnaire-12 (KCCQ-12) scores compared to those on placebo.* -
  • Overall, sotagliflozin not only reduced hospitalizations and cardiovascular deaths but also led to improved symptoms and quality of life within four months, benefiting patients regardless of their left ventricular ejection fraction.*
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Aim: To conduct post hoc analyses of the VERTIS CV (NCT01986881) trial to explore the effects of ertugliflozin on serum uric acid (UA) and gout-related outcomes.

Materials And Methods: Participants with type 2 diabetes and atherosclerotic cardiovascular disease were randomised (1:1:1) to placebo, ertugliflozin 5 mg or ertugliflozin 15 mg. Mean UA over time (260 weeks) was evaluated for pooled ertugliflozin versus placebo overall, and by baseline quintile of UA (≤4.

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Article Synopsis
  • SGLT2 inhibitors and GLP-1 receptor agonists both have positive effects on cardiovascular and kidney health in patients with type 2 diabetes, leading to a study comparing their benefits when used together or separately.
  • A meta-analysis from various trials showed that SGLT2 inhibitors effectively reduced risks of major cardiovascular events and kidney disease progression for patients whether or not they were taking GLP-1 receptor agonists.
  • The consistency of these benefits across different outcomes indicates that SGLT2 inhibitors can be beneficial for all diabetic patients, regardless of GLP-1 receptor agonist usage.
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Background: Results from the COORDINATE-Diabetes trial (Coordinating Cardiology Clinics Randomized Trial of Interventions to Improve Outcomes - Diabetes) demonstrated that a multifaceted, clinic-based intervention increased prescription of evidence-based medical therapies to participants with type 2 diabetes and atherosclerotic cardiovascular disease. This secondary analysis assessed whether intervention success was consistent across sex, race, and ethnicity.

Methods: COORDINATE-Diabetes, a cluster randomized trial, recruited participants from 43 US cardiology clinics (20 randomized to intervention and 23 randomized to usual care).

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Following the publication of results from multiple landmark cardiovascular outcome trials of antihyperglycemic medications over the past 8 years, there has been a major shift in the focus of care for people with type 2 diabetes, from control of hyperglycemia to managing cardiovascular risk. Multiple international cardiology and diabetes society guidelines and recommendations now endorse sodium-glucose cotransporter-2 inhibitors and glucagon-like protein-1 receptor agonists as first-line therapies to mitigate cardiovascular risk. The most recent publication is the 2023 European Society of Cardiology guideline on the management of cardiovascular disease in those with type 2 diabetes that, for the first time, recommends use of both classes of medications for the mitigation of cardiovascular risk for those with or at high risk for atherosclerotic cardiovascular disease, heart failure, and chronic kidney disease.

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Article Synopsis
  • The study investigates long-term trends and risk factors for peripheral arterial complications in individuals with type 2 diabetes compared to the general population, using data from the Swedish National Diabetes Register from 2001 to 2019.
  • It includes a large sample size of 655,250 people with diabetes, analyzing the incidence rates of various complications over the years, such as lower extremity artery disease and diabetic foot disease.
  • Key findings reveal that risk factors like hemoglobin A1c levels, systolic blood pressure, smoking, and lipid levels significantly influence these complications, with higher risk for those not meeting target levels.
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  • This study analyzed long-term trends and risk factors for non-coronary complications in individuals with type 1 diabetes compared to matched controls using a large dataset from the Swedish National Diabetes Register.
  • Between 2001 and 2019, the incidence rates of complications like large artery disease and diabetic foot syndrome decreased significantly in those with type 1 diabetes, while certain risk factors like education and blood sugar levels had a substantial impact on these outcomes.
  • Interestingly, people with type 1 diabetes who maintained cardiometabolic risk factors at target levels showed lower risks for some complications, but had a significantly higher risk for diabetic foot disease if all risk factors were present.
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Sodium-glucose cotransporter 2 inhibitors (SGLT2is) improve clinical outcomes in persons with heart failure (HF). This class of agents has been consistently associated with an increased risk of mycotic genital infections (MGIs), and in some, but not all trials, urinary tract infections (UTIs). Other medications widely used for cardiac conditions do not cause MGIs and UTIs, so cardiologists and their supporting teams will be encountering clinical questions that they previously did not have to address.

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  • Ticagrelor, when added to aspirin, was found to reduce major adverse cardiovascular events (MACE) but also increased the risk of bleeding in patients with type 2 diabetes mellitus (T2DM) and coronary artery disease.
  • In a study involving 19,220 patients over a median of 3 years, those with peripheral artery disease (PAD) who received the placebo had significantly higher risks of both MACE and limb events compared to those on ticagrelor.
  • While ticagrelor demonstrated a reducing effect on limb events such as revascularization and acute limb ischemia, the overall bleeding risk also increased; further studies are necessary to explore the balance of benefits and risks in various patient groups.
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Purpose Of Review: To review ongoing and planned clinical trials of weight loss among individuals with or at high risk of heart failure.

Recent Findings: Intentional weight loss via semaglutide among persons with heart failure and preserved ejection fraction and obesity significantly improves weight loss and health status as assessed by the KCCQ-CSS score and is associated with improvements in 6-min walk test. Ongoing and planned trials will explore the role of intentional weight loss with treatments such as semaglutide or tirzepatide for individuals with heart failure across the entire ejection fraction spectrum.

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Article Synopsis
  • * A meta-analysis included 78,607 patients from 11 trials, revealing that SGLT2i reduced MACE by 9%, primarily due to lower rates of cardiovascular death rather than incidents of myocardial infarction or stroke.
  • * Results showed consistent benefits from SGLT2i in patients with diabetes, heart failure, and chronic kidney disease, suggesting wide applicability for improving heart-related outcomes among these populations.
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Purpose Of Review: Obesity is associated with cardiovascular (CV) conditions, including but not limited to atherosclerotic disease, heart failure, and atrial fibrillation. Despite this, the impact of intentional weight loss on CV outcomes for persons with obesity and established CV conditions remains poorly studied. New and emerging pharmacologic therapies for weight loss primarily targeting the incretin/nutrient sensing axes induce substantial and sustained weight loss.

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In high-income countries, rates of atherosclerotic complications in type 2 diabetes have declined markedly over time due to better management of traditional risk factors including lipids, blood pressure, and glycemia levels. Population-wide reductions in smoking have also helped lower atherosclerotic complications and so reduce premature mortality in type 2 diabetes. However, as excess adiposity is a stronger driver for heart failure (HF), and obesity levels have remained largely unchanged, HF risks have not declined as much and may even be rising in the increasing number of people developing type 2 diabetes at younger ages.

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Article Synopsis
  • South Asian individuals have a higher prevalence of cardiometabolic diseases compared to White Europeans, prompting a study on their vascular regenerative cell content.
  • The study included 60 South Asians and 60 White Europeans, revealing that South Asians had lower levels of key regenerative cells and exhibited more severe diabetes symptoms.
  • Findings suggest that South Asians possess compromised vascular repair capabilities, which may explain why they face greater cardiovascular risks.
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