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- W96331954 abstract "Exposure to acute emotional stress can occur at any time; indeed, some of us buy tickets to it.(1) Regardless of how people are exposed to acute emotional stress, elevated risk of acute coronary syndrome (ACS) can follow.(2–4) The role of acute stress in the triggering of cardiovascular events is no longer disputed, thanks to carefully conducted prospective cohort studies.(3,5,6) Specific behaviors (eg, cocaine use and intense physical activity), environmental events (eg, natural disasters), and emotional reactions (eg, anger and sadness) have been identified that increase the risk of ACS for a distinct hazard period.(2,3) While exposure to acute stress and its emotional concomitants can trigger ACS, until now the underlying pathophysiologic characteristics have not been well defined.In the latest contribution to this literature, Wilbert-Lampen and colleagues(7) presented findings from a substudy of their previous report on ACS events triggered during World Cup soccer matches. In the original study,(1) a higher incidence of ACS was found on match days when the outcome of the match was uncertain or of great portent for German fans, compared with days when the German team did not play or when the outcome did not matter. The authors instructed local coronary care units to obtain blood samples from patients presenting to the hospital with possible ACS during the World Cup soccer.(1) This approach allowed for a comparison between patients with stress-triggered ACS and both patients with non–stress-triggered ACS (matched on age, sex, and type of ACS) and healthy volunteers (matched on age and sex).(7)The authors found increased levels of endothelin-1 (ET-1, a potent vasoconstrictor) and monocyte chemotactic protein-1, a member of the small inducible gene family involved in the recruitment of monocytes to sites of injury and infection, to be specific and sensitive indicators of the patients with stress-induced ACS. They also found additional differences of note between the cases and controls. Levels of tumor necrosis factor α, known to be regulated in part by a vagal, cholinergic anti-inflammatory pathway(8) and implicated in dysregulated sympathovagal balance during and immediately after acute emotional stress,(9) were also higher in the stress-triggered ACS group, while levels of high-sensitivity C-reactive protein, thought to be a risk marker for ACS,(10) were not increased.This study has some exciting features. The majority of studies concerning pathways linking acute stress to ischemic syndromes have been conducted in the laboratory setting with participants far removed from the natural environment. Laboratory mental stress can cause epicardial and coronary microvascular vasoconstriction among patients with coronary artery disease (CAD).(11) Even among healthy individuals, peripheral ET-1–mediated endothelial dysfunction can last for longer than 90 minutes after the laboratory stress is terminated.(12) The processes by which stress might modulate ET-1 release of inflammatory processes are not fully understood, yet the study’s demonstration that ET-1 is implicated in stress-triggered ACS in the real world provides evidence for the importance of this pathway.Only certain soccer fans were vulnerable to an acute stress-triggered ACS. Can we identify who might be at risk? There has been considerable interest in identifying individual differences in vulnerability to the potential pathogenic effects of stress, with emphasis on genetic as well as psychological factors.(13) Soccer fans with a history of CAD were the most vulnerable to a stress-triggered ACS.(1) Among patients with CAD, trait anger increased the risk for emotional stress-provoked myocardial ischemia,(14) while a tendency to ruminate about past anger-inducing events was associated with a stress-provoked increase in ET-1 levels in the laboratory.(15) Other factors that might determine who is vulnerable to acute stress-induced ACS need to be explored." @default.
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- W96331954 date "2010-02-01" @default.
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- W96331954 title "Endothelin-1 Release and Stimulation of the Inflammatory Cascade" @default.
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- W96331954 doi "https://doi.org/10.1016/j.jacc.2009.08.079" @default.
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