Publications by authors named "Keech A"

Introduction: This analysis aimed to investigate diabetes-specific psychological outcomes among adults with type 1 diabetes (T1D) using hybrid closed-loop (HCL) versus standard therapy.

Research Design And Methods: In this multicenter, open-label, randomized, controlled, parallel-group clinical trial, adults with T1D were allocated to 26 weeks of HCL (MiniMed™ 670G) or standard therapy (insulin pump or multiple daily injections without real-time continuous glucose monitoring). Psychological outcomes (awareness and fear of hypoglycemia; and diabetes-specific positive well-being, diabetes distress, diabetes treatment satisfaction, and diabetes-specific quality of life (QoL)) were measured at enrollment, mid-trial and end-trial.

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Objective: We have shown that men aged 50 years+ at high risk of type 2 diabetes treated with testosterone together with a lifestyle program reduced the risk of type 2 diabetes at 2 years by 40% compared to a lifestyle program alone. To develop a personalized approach to treatment, we aimed to explore a prognostic model for incident type 2 diabetes at 2 years and investigate biomarkers predictive of the testosterone effect.

Design: Model development in 783 men with impaired glucose tolerance but not type 2 diabetes from Testosterone for Prevention of Type 2 Diabetes; a multicenter, 2-year trial of Testosterone vs placebo.

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Background: Concerns persist regarding the cognitive safety of achieving very low levels of low-density lipoprotein (LDL) cholesterol. Although short-term studies are reassuring, the long-term cognitive effects of sustained exposure to very low LDL cholesterol levels through combined proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibition and statin therapy remain unknown.

Methods: This prospective study enrolled a subset of adults with atherosclerotic cardiovascular disease who had completed a neurocognitive substudy (EBBINGHAUS) of a placebo-controlled randomized trial of evolocumab (FOURIER) and were eligible for a long-term open-label extension.

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Background: Cardiovascular disease has declined but remains a major disease burden across developed countries.

Objective: To assess the effectiveness and cost-effectiveness of statin therapy across United Kingdom population categories.

Design: The cardiovascular disease microsimulation model, developed using Cholesterol Treatment Trialists' Collaboration data and the United Kingdom Biobank cohort, projected cardiovascular events, mortality, quality of life and healthcare costs using participant characteristics.

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Less than 20% of Australians with type 1 diabetes (T1D) meet recommended glucose targets. Technology use is associated with better glycaemia, with the most advanced being automated insulin delivery (AID) systems, which are now recommended as gold-standard T1D care. Our Australian AID trial shows a wide spectrum of adults with T1D can achieve recommended targets.

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Background: Heart failure (HF) is a complex syndrome associated with high morbidity and mortality and increased health care use. Patient education is key to improving health outcomes, achieved by promoting self-management to optimize medical management. Newer digital tools like SMS text messaging and smartphone apps provide novel patient education approaches.

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Background: Protein biomarkers that reflect different pathophysiological pathways have been associated with the risk of adverse cardiovascular events. However, it is uncertain whether these associations are sustained with increasing years after the biomarkers are measured.

Methods And Results: In this cohort study, 7745 patients with coronary heart disease who participated in the LIPID (Long-Term Intervention With Pravastatin in Ischemic Disease) trial, BNP (B-type natriuretic peptide), troponin I, cystatin-C, C-reactive protein, d-dimer and midregional proadrenomedullin were measured at baseline and after 1 year.

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Background: Heart failure (HF) is a complex syndrome associated with high morbidity and mortality and increased healthcare utilisation. Patient education is key to improving health outcomes, achieved by promoting self-management to optimise medical management. Newer digital tools like text messaging and smartphone applications provide novel patient education approaches.

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Background: Cardiovascular disease (CVD) risk increases with age. Statins reduce cardiovascular risk but their effects are less certain at older ages. We assessed the long-term effects and cost-effectiveness of statin therapy for older people in the contemporary UK population using a recent meta-analysis of randomised evidence of statin effects in older people and a new validated CVD model.

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Aims/hypothesis: In diabetes haptoglobin (Hp) 2 vs Hp 1 allelic product is associated with cardiac and renal complications. Few studies report both Hp phenotype and Hp levels. In a Fenofibrate Intervention and Event Lowering in Diabetes (FIELD) trial substudy we evaluated the Hp phenotype, Hp levels, and fenofibrate effects.

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Article Synopsis
  • In patients with acute ST-elevation myocardial infarction (STEMI), while restoring blood flow is crucial, many still experience poor microcirculatory perfusion, leading to worse outcomes.
  • * A meta-analysis of 12 studies involving 1915 patients found that adjunctive intracoronary (IC) thrombolytic therapy during primary angioplasty significantly reduced major adverse cardiac events (MACE) and improved heart function, particularly with certain types of thrombolytic agents.
  • * The therapy did not increase the risk of mortality or bleeding, suggesting it could be a safe and effective treatment option in STEMI cases.
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Background: Cardiovascular disease incidence and mortality have declined across developed economies and granular up-to-date cost-effectiveness evidence is required for treatments targeting large populations. To assess the health benefits and cost-effectiveness of standard and higher intensity statin therapy in the contemporary UK population 40-70 years old.

Methods: A cardiovascular disease microsimulation model, developed using the Cholesterol Treatment Trialists' Collaboration data (117,896 participants; 5 years follow-up), and calibrated in the UK Biobank cohort (501,854 participants; 9 years follow-up), projected risks of myocardial infarction, stroke, coronary revascularization, diabetes, cancer and vascular and nonvascular death for all UK Biobank participants without and with statin treatment.

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Globally ≈10% of adults have diabetes, with 80% in disadvantaged regions, hence low-cost renoprotective agents are desirable. Fenofibrate demonstrated microvascular benefits in several cardiovascular end-point diabetes trials, but knowledge of effects in late-stage kidney disease is limited. We report new FIELD substudy data and call for further kidney outcomes data.

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Background: UK cardiovascular disease (CVD) incidence and mortality have declined in recent decades but socioeconomic inequalities persist.

Aim: To present a new CVD model, and project health outcomes and the impact of guideline-recommended statin treatment across quintiles of socioeconomic deprivation in the UK.

Design And Setting: A lifetime microsimulation model was developed using 117 896 participants in 16 statin trials, 501 854 UK Biobank (UKB) participants, and quality-of-life data from national health surveys.

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Inflammation has a direct role in the development of atherosclerotic vascular disease, and oral colchicine displays broad anti-inflammatory properties. Several large, randomised controlled trials (RCTs) have evaluated colchicine's impact on cardiovascular outcomes. Results from a meta-analysis of these trials demonstrate that colchicine reduces the risk of recurrent major adverse cardiovascular events (MACEs) by 25%, leading to its recent approval by the Food and Drug Administration for the treatment and prevention of cardiovascular disease.

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Background: In FOURIER (Further Cardiovascular Outcomes Research with PCSK9 Inhibition in Subjects with Elevated Risk), during a median follow-up of 2.2 years, risk reduction for major adverse cardiovascular event with evolocumab was greater in patients with multivessel disease (MVD). The FOURIER Open-Label Extension (FOURIER-OLE) provides an additional median follow-up of 5 years.

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Article Synopsis
  • - The study examined the link between fibroblast growth factor 21 (FGF21) levels and mortality in over 5,500 participants without existing cardiovascular disease (CVD), revealing that higher FGF21 levels were correlated with increased all-cause mortality during an average follow-up of 17.7 years.
  • - While baseline FGF21 was associated with both CVD and non-CVD deaths, only the connection with non-CVD mortality remained significant after adjusting for traditional risk factors like age and health conditions.
  • - The findings suggest a need for further research on the role of FGF21 in predicting mortality, particularly its strong association with non-CVD deaths in individuals free of clinically evident CVD.
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In 6002 Australian adults with type 2 diabetes and a median 5-year follow-up in the FIELD (Fenofibrate Intervention and Event Lowering in Diabetes) trial, baseline socioeconomic status (SES) and self-reported education level were not related to development of on-trial sight-threatening diabetic retinopathy. Similarly, in a retinal photography substudy (n = 549), two-step diabetic retinopathy progression was not related to SES or education.

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Summary: Technologies identifying single nucleotide polymorphisms () in DNA sequencing yield an avalanche of data requiring analysis and interpretation. Standard methods may require many weeks of processing time. The use of statistical methods requiring data sorting, matrix inversions of a high-dimension and replication in subsets of the data on multiple outcomes exacerbate these times.

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Article Synopsis
  • The study focuses on evaluating the survival rates of adult patients experiencing refractory out-of-hospital cardiac arrest (r-OHCA) when treated with either expedited transport to the hospital or ongoing advanced life support (ALS) at the scene.
  • The hypothesis suggests that quicker transport from the scene will lead to better survival outcomes with favorable neurological status.
  • The clinical trial, conducted in two urban areas in Australia, will randomly assign 200 participants to one of the two treatment approaches, with various outcome measures including survival, safety, and quality of life being assessed.
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Article Synopsis
  • - The study aimed to determine whether faster transport to hospitals for out-of-hospital cardiac arrest (OHCA) patients is better than extended resuscitation on-site.
  • - A systematic review was conducted, analyzing nine relevant studies, which found that expedited transport did not significantly improve survival rates or neurological outcomes for patients.
  • - Overall, the evidence was deemed very low in certainty, indicating no strong conclusion can be made about the effectiveness of rapid transport versus on-scene resuscitation for OHCA patients.
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Article Synopsis
  • Reducing standard modifiable cardiovascular risk factors (SMuRFs) is essential for addressing coronary artery disease (CAD), but some patients develop CAD without any SMuRFs.
  • Patients without SMuRFs who have a heart attack tend to have higher early mortality rates compared to those with at least one SMuRF.
  • An international team has created a clinical pathway for managing SMuRFless CAD patients, focusing on confirming their condition, ensuring proper secondary prevention, and identifying other risk factors to improve their healthcare outcomes.
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Objective: In this study we aim to unravel genetic determinants of coronary heart disease (CHD) in type 2 diabetes (T2D) and explore their applications.

Research Design And Methods: We performed a two-stage genome-wide association study for CHD in Chinese patients with T2D (3,596 case and 8,898 control subjects), followed by replications in European patients with T2D (764 case and 4,276 control subjects) and general populations (n = 51,442-547,261). Each identified variant was examined for its association with a wide range of phenotypes and its interactions with glycemic, blood pressure (BP), and lipid controls in incident cardiovascular diseases.

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Aims: Fracture risk is elevated in some type 2 diabetes patients. Bone fragility may be associated with more clinically severe type 2 diabetes, although prospective studies are lacking. It is unknown which diabetes-related characteristics are independently associated with fracture risk.

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