Focus Issue on Coronar Artery Disease
Issue @ A Glance
Novel therapeutic concepts
Coronary artery disease
Coronary artery disease
EHJ Brief Communication
Acute coronary syndromes
Prevention and epidemiology
Circulating microRNAs strongly predict cardiovascular death in patients with coronary artery disease—results from the large AtheroGene study
Stratification for coronary events among patients with coronary artery disease is of considerable interest because of the potential to guide secondary preventive therapies. Our study proofs, that circulating miRNAs have the potential to improve risk stratification for secondary clinical events. In the future, these findings may result in risk stratification tools based on the prognostic value of miRNAs.
Coronary microcirculatory pathophysiology: can we afford it to remain a black box?
Axel R. Pries1,2* and Bettina Reglin1
1Department of Physiology, Center for Cardiovascular Research, Charité, Charitéplatz 1, D-10117 Berlin, Germany; and 2Deutsches Herzzentrum Berlin, Augustenburger Platz 1, D-13353 Berlin, Germany
*Corresponding author. Tel: +49 30 450 570 521, Fax: +49 30 450 570 952, Email: firstname.lastname@example.org
Coronary microvascular networks play the key role in determining blood flow distribution in the heart. Matching local blood supply to tissue metabolic demand entails continuous adaptation of coronary vessels via regulation of smooth muscle tone and structural dilated vessel diameter. The importance of coronary microcirculation for relevant pathological conditions including angina in patients with normal or near-normal coronary angiograms [microvascular angina (MVA)] and heart failure with preserved ejection fraction (HFpEF) is increasingly recognized. For MVA, clinical studies have shown a prevalence of up to 40% in patients with suspected coronary artery disease and a relevant impact on adverse cardiovascular events including cardiac death, stroke, and heart failure. Despite a continuously increasing number of corresponding clinical studies, the knowledge on pathophysiological cause–effect relations involving coronary microcirculation is, however, still very limited. A number of pathophysiological hypotheses for MVA and HFpEF have been suggested but are not established to a degree, which would allow definition of nosological entities, stratification of affected patients, or development of effective therapeutic strategies. This may be related to a steep decline in experimental (animal) pathophysiological studies in this area during the last 15 years. Since technology to experimentally investigate microvascular pathophysiology in the beating heart is increasingly, in principle, available, a concerted effort to build ‘coronary microcirculatory observatories’ to close this gap and to accelerate clinical progress in this area is suggested.
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