Abstract
To the Editor: Tofler et al. suggest that morning increases in plasma epinephrine and norepinephrine may contribute to increased platelet aggregation (June 11 issue).1 There is no doubt that by themselves (high concentrations) or in synergistic association with other agonists (low concentrations), catecholamines promote platelet aggregation in vitro.2 3 4 5 However, we think that in vivo not only plasma catecholamines but also platelet catecholamines may have a role in the development of coronary heart disease. Thus, the likelihood of having a myocardial infarction may also depend on a patient's platelet catecholamine levels. Indeed, in studies in patients with pheochromocytoma, Zweifler and Romero…
Original language | English (US) |
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Pages (from-to) | 1736-1737 |
Number of pages | 2 |
Journal | New England Journal of Medicine |
Volume | 317 |
Issue number | 27 |
DOIs | |
State | Published - Dec 31 1987 |
ASJC Scopus subject areas
- Medicine(all)