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Nature Reviews. Cardiology

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https://www.readbyqxmd.com/read/28447664/efficient-design-of-clinical-trials-and-epidemiological-research-is-it-possible
#1
REVIEW
Michael S Lauer, David Gordon, Gina Wei, Gail Pearson
Randomized clinical trials and large-scale, cohort studies continue to have a critical role in generating evidence in cardiovascular medicine; however, the increasing concern is that ballooning costs threaten the clinical trial enterprise. In this Perspectives article, we discuss the changing landscape of clinical research, and clinical trials in particular, focusing on reasons for the increasing costs and inefficiencies. These reasons include excessively complex design, overly restrictive inclusion and exclusion criteria, burdensome regulations, excessive source-data verification, and concerns about the effect of clinical research conduct on workflow...
April 27, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28447663/basic-research-kidneys-and-cardiac-stress
#2
Karina Huynh
No abstract text is available yet for this article.
April 27, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28447662/expert-consensus-document-echocardiography-and-lung-ultrasonography-for-the-assessment-and-management-of-acute-heart-failure
#3
REVIEW
Susanna Price, Elke Platz, Louise Cullen, Guido Tavazzi, Michael Christ, Martin R Cowie, Alan S Maisel, Josep Masip, Oscar Miro, John J McMurray, W Frank Peacock, F Javier Martin-Sanchez, Salvatore Di Somma, Hector Bueno, Uwe Zeymer, Christian Mueller
Echocardiography is increasingly recommended for the diagnosis and assessment of patients with severe cardiac disease, including acute heart failure. Although previously considered to be within the realm of cardiologists, the development of ultrasonography technology has led to the adoption of echocardiography by acute care clinicians across a range of specialties. Data from echocardiography and lung ultrasonography can be used to improve diagnostic accuracy, guide and monitor the response to interventions, and communicate important prognostic information in patients with acute heart failure...
April 27, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28436489/hypertension-very-low-achieved-sbp-increases-risk-of-cardiovascular-death
#4
Karina Huynh
No abstract text is available yet for this article.
April 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28436488/pathology-imaging-and-treatment-of-cardiac-tumours
#5
REVIEW
Joseph J Maleszewski, Nandan S Anavekar, Timothy J Moynihan, Kyle W Klarich
Cardiac tumours are a rare, but often devastating, clinical diagnosis. They encompass a broad set of lesions that include both neoplastic and non-neoplastic conditions. Cardiac tumours are often diagnosed incidentally during work-up for other conditions, or during ultrasound, CT, or MRI scans for unusual or nonspecific symptoms. In the past decade, important changes have been made in the nomenclature and the recommendations for diagnosis of cardiac tumours, as highlighted by the WHO's 2015 revision of the classification of cardiac tumours...
April 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28436487/redefining-the-identity-of-cardiac-fibroblasts
#6
REVIEW
Michelle D Tallquist, Jeffery D Molkentin
Cardiac fibroblasts deposit and maintain extracellular matrix during organogenesis and under physiological conditions. In the adult heart, activated cardiac fibroblasts also participate in the healing response after acute myocardial infarction and during chronic disease states characterized by augmented interstitial fibrosis and ventricular remodelling. However, delineation of the characteristics, plasticity, and origins of cardiac fibroblasts is an area of ongoing investigation and controversy. A set of genetic mouse models has been developed that specifically addresses the nature of these cells, in terms of both their origins and their response during cardiac disease and ventricular remodelling...
April 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28436486/muscle-wasting-and-cachexia-in-heart-failure-mechanisms-and-therapies
#7
REVIEW
Stephan von Haehling, Nicole Ebner, Marcelo R Dos Santos, Jochen Springer, Stefan D Anker
Body wasting is a serious complication that affects a large proportion of patients with heart failure. Muscle wasting, also known as sarcopenia, is the loss of muscle mass and strength, whereas cachexia describes loss of weight. After reaching guideline-recommended doses of heart failure therapies, the most promising approach to treating body wasting seems to be combined therapy that includes exercise, nutritional counselling, and drug treatment. Nutritional considerations include avoiding excessive salt and fluid intake, and replenishment of deficiencies in trace elements...
April 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28436485/dyslipidaemia-hypertriglyceridaemia-caused-by-gpihbp1-autoantibodies
#8
Gregory B Lim
No abstract text is available yet for this article.
April 24, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28406184/monocytes-and-macrophages-in-abdominal-aortic-aneurysm
#9
REVIEW
Juliette Raffort, Fabien Lareyre, Marc Clément, Réda Hassen-Khodja, Giulia Chinetti, Ziad Mallat
Abdominal aortic aneurysm (AAA) is a life-threatening disease associated with high morbidity, and high mortality in the event of aortic rupture. Major advances in open surgical and endovascular repair of AAA have been achieved during the past 2 decades. However, drug-based therapies are still lacking, highlighting a real need for better understanding of the molecular and cellular mechanisms involved in AAA formation and progression. The main pathological features of AAA include extracellular matrix remodelling associated with degeneration and loss of vascular smooth muscle cells and accumulation and activation of inflammatory cells...
April 13, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28406183/interventional-cardiology-increased-risk-of-stent-thrombosis-with-bioresorbable-scaffolds
#10
Gregory B Lim
No abstract text is available yet for this article.
April 13, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28406182/valvular-disease-transcatheter-repair-of-severe-tricuspid-regurgitation
#11
Karina Huynh
No abstract text is available yet for this article.
April 13, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28383023/demystifying-rotors-and-their-place-in-clinical-translation-of-atrial-fibrillation-mechanisms
#12
REVIEW
Stanley Nattel, Feng Xiong, Martin Aguilar
Treatment of atrial fibrillation (AF), the most common arrhythmia in clinical practice, remains challenging. Improved understanding of underlying mechanisms is needed to improve therapy. Functional re-entry is central to AF maintenance. The first detailed, quantitative theory of functional re-entry, the 'leading circle' model, was developed 40 years ago. Subsequently, an alternative paradigm based on 'spiral waves' has evolved. Spiral-wave generators, or 'rotors', have been identified using advanced mapping methods in experimental and clinical AF...
April 6, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28383022/high-sensitivity-assays-for-troponin-in-patients-with-cardiac-disease
#13
REVIEW
Dirk Westermann, Johannes Tobias Neumann, Nils Arne Sörensen, Stefan Blankenberg
Troponin is a widely used biomarker in patients with cardiac disease. The use of troponin is well established in patients with suspected acute myocardial infarction (AMI), but troponin measurement is also used in other acute and nonacute settings. In patients with suspected AMI, early decision-making is crucial to allow rapid treatment and further diagnostic evaluation. Current guidelines recommend serial measurements of troponin with a cut-off concentration at the 99th percentile to triage patients in the emergency department...
April 6, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28361977/myocardial-stress-and-autophagy-mechanisms-and-potential-therapies
#14
REVIEW
Lea M D Delbridge, Kimberley M Mellor, David J Taylor, Roberta A Gottlieb
Autophagy is a ubiquitous cellular catabolic process responsive to energy stress. Research over the past decade has revealed that cardiomyocyte autophagy is a prominent homeostatic pathway, important in adaptation to altered myocardial metabolic demand. The cellular machinery of autophagy involves targeted direction of macromolecules and organelles for lysosomal degradation. Activation of autophagy has been identified as cardioprotective in some settings (that is, ischaemia and ischaemic preconditioning). In other situations, sustained autophagy has been linked with cardiopathology (for example, sustained pressure overload and heart failure)...
March 31, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28332500/cardiovascular-effects-of-electronic-cigarettes
#15
REVIEW
Neal L Benowitz, Joseph B Fraiman
Cardiovascular safety is an important consideration in the debate on the benefits versus the risks of electronic cigarette (EC) use. EC emissions that might have adverse effects on cardiovascular health include nicotine, oxidants, aldehydes, particulates, and flavourants. To date, most of the cardiovascular effects of ECs demonstrated in humans are consistent with the known effects of nicotine. Pharmacological and toxicological studies support the biological plausibility that nicotine contributes to acute cardiovascular events and accelerated atherogenesis...
March 23, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28300081/effects-of-dyslipidaemia-on-monocyte-production-and-function-in-cardiovascular-disease
#16
REVIEW
Mohammed Shamim Rahman, Andrew J Murphy, Kevin J Woollard
Monocytes are heterogeneous effector cells involved in the maintenance and restoration of tissue integrity. Monocytes and macrophages are involved in cardiovascular disease progression, and are associated with the development of unstable atherosclerotic plaques. Hyperlipidaemia can accelerate cardiovascular disease progression. However, monocyte responses to hyperlipidaemia are poorly understood. In the past decade, accumulating data describe the relationship between the dynamic blood lipid environment and the heterogeneous circulating monocyte pool, which might have profound consequences for cardiovascular disease...
March 16, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28300080/hypertriglyceridaemia-and-risk-of-coronary-artery-disease
#17
REVIEW
Željko Reiner
An elevated serum level of LDL cholesterol is a well-known risk factor for cardiovascular disease (CVD), but the role of elevated triglyceride levels is debated. Controversies regarding hypertriglyceridaemia as an independent risk factor for CVD have occurred partly because elevated triglyceride levels are often a component of atherogenic dyslipidaemia - they are associated with decreased levels of HDL cholesterol and increased levels of small dense LDL particles, which are highly atherogenic. Findings from several large studies indicate that elevated levels of triglycerides (either fasting or nonfasting) or, more specifically, triglyceride-rich lipoproteins and their remnants, are independently associated with increased risk of CVD...
March 16, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28275246/sarcoplasmic-reticulum-mitochondria-communication-in-cardiovascular-pathophysiology
#18
REVIEW
Camila Lopez-Crisosto, Christian Pennanen, Cesar Vasquez-Trincado, Pablo E Morales, Roberto Bravo-Sagua, Andrew F G Quest, Mario Chiong, Sergio Lavandero
Repetitive, calcium-mediated contractile activity renders cardiomyocytes critically dependent on a sustained energy supply and adequate calcium buffering, both of which are provided by mitochondria. Moreover, in vascular smooth muscle cells, mitochondrial metabolism modulates cell growth and proliferation, whereas cytosolic calcium levels regulate the arterial vascular tone. Physical and functional communication between mitochondria and sarco/endoplasmic reticulum and balanced mitochondrial dynamics seem to have a critical role for optimal calcium transfer to mitochondria, which is crucial in calcium homeostasis and mitochondrial metabolism in both types of muscle cells...
March 9, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28230176/antithrombotic-therapy-for-patients-with-stemi-undergoing-primary-pci
#19
REVIEW
Francesco Franchi, Fabiana Rollini, Dominick J Angiolillo
Antithrombotic therapy, including antiplatelet and anticoagulant agents, is the cornerstone of pharmacological treatment to optimize clinical outcomes in patients with ST-segment elevation myocardial infarction (STEMI) undergoing primary percutaneous coronary intervention (PPCI). Intravenous anticoagulant drugs available for PPCI include the indirect thrombin inhibitors unfractionated heparin and low-molecular-weight heparin, and the direct thrombin inhibitor bivalirudin. Intravenous antiplatelet drugs mainly include glycoprotein IIb/IIIa inhibitors and the P2Y12-receptor inhibitor cangrelor...
February 23, 2017: Nature Reviews. Cardiology
https://www.readbyqxmd.com/read/28150806/dyslipidaemia-small-triumph-for-fenofibrate-therapy-in-dyslipidaemia
#20
Robert S Rosenson
No abstract text is available yet for this article.
February 2, 2017: Nature Reviews. Cardiology
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