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BACKGROUND Obesity is a major risk factor for cardiovascular disease, but the most predictive measure for different ethnic populations is not clear. We aimed to assess whether markers of obesity, especially waist-to-hip ratio, would be stronger indicators of myocardial infarction than body-mass index (BMI), the conventional measure. METHODS We did a(More)
BACKGROUND Patients with chronic heart failure (CHF) are frequently anemic. An increase in hemoglobin could enhance exercise performance by increasing oxygen delivery. We investigated the effect of erythropoietin (EPO) on exercise performance in anemic patients with CHF. METHODS AND RESULTS Twenty-six anemic patients aged 57+/-11 years were randomized to(More)
SLCO1B1 gene variants are associated with severe statin-induced myopathy. We examined whether these variants are also associated with general statin intolerance in a large population of patients with type 2 diabetes receiving statins as part of routine clinical care. A total of 4,196 individuals were genotyped for rs4149056 (Val174Ala) and rs2306283(More)
BACKGROUND We wished to determine the prevalence of, potential mechanistic associations of, and clinical outcomes related to anemia in patients with heart failure and a broad spectrum of left ventricular ejection fraction (LVEF). METHODS AND RESULTS In multivariable analyses, we examined the associations between hemoglobin and baseline characteristics,(More)
BACKGROUND Experimental evidence suggests that xanthine oxidase inhibitors can reduce myocardial oxygen consumption for a particular stroke volume. If such an effect also occurs in man, this class of inhibitors could become a new treatment for ischaemia in patients with angina pectoris. We ascertained whether high-dose allopurinol prolongs exercise(More)
BACKGROUND Many patients with heart failure remain symptomatic and have a poor prognosis despite existing treatments. Decreases in myocardial contractility and shortening of ventricular systole are characteristic of systolic heart failure and might be improved by a new therapeutic class, cardiac myosin activators. We report the first study of the cardiac(More)
Sulfonylureas are metabolized mainly by the cytochrome p450 2C9 (CYP2C9) enzyme. Two CYP2C9 variants--*2 (Arg144Cys) and *3 (Ile359Leu)--are associated with reduced enzyme activity and impaired substrate metabolism. We identified 1,073 incident users of sulfonylureas in Tayside, Scotland, and assessed the impact of the combined CYP2C9*2 and CYP2C9*3(More)
OBJECTIVES This study sought to determine the prevalence of lipid and lipoprotein abnormalities and their association with the risk of a first acute myocardial infarction (AMI) among Asians. BACKGROUND Patterns of lipid abnormalities among Asians and their relative impact on cardiovascular risk have not been well characterized. METHODS In a case-control(More)
BACKGROUND Low vitamin D levels are common, and are associated with a higher incidence of future vascular events. We tested whether vitamin D supplementation could improve endothelial function and other markers of vascular function in patients with a history of myocardial infarction. METHODS Parallel group, placebo-controlled, double-blind randomised(More)
There is increasing evidence to suggest that chronic heart failure (CHF) is an insulin resistant (IR) state and that the degree of IR correlates with the severity and mortality of CHF. The pathophysiology of IR in CHF has yet to be fully defined. Additionally, it remains to be determined if IR is merely a marker reflecting the severity of CHF or whether it(More)