Light/dark patterns of soluble vascular cell adhesion molecule-1 in relation to melatonin in patients with ST-segment elevation myocardial infarction

Alberto Dominguez-Rodriguez, Pedro Abreu-Gonzalez, Martín J. Garcia-Gonzalez, Sima Samimi-Fard, Juan Carlos Kaski, Russel J. Reiter

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

Elevated levels of soluble cellular adhesion molecules have been reported in patients with acute coronary syndromes. Likewise, a relation between decreased nocturnal melatonin levels and coronary artery disease has been suggested. The aim of the present study was to investigate the day-night variations in the concentration of soluble vascular cell adhesion molecule-1 (sVCAM-1) in patients with ST-segment elevation myocardial infarction (STEMI) in relation to the light/dark melatonin pattern. Ninety consecutive patients with STEMI who were admitted to the Coronary Care Unit of our institution were studied. We also recruited 70 age- and gender-matched healthy normal subjects. Blood samples were drawn at 09:00 and 02:00 hr, while patients were at rest, for the assessment of sVCAM-1 and melatonin, which were measured using commercially available ELISA. In STEMI patients, melatonin concentrations maintained a diurnal variation, but the difference between nocturnal and diurnal levels was less than that in healthy subjects (P < 0.0001). In contrast to findings with melatonin, sVCAM-1 levels showed no diurnal variations in control subjects. In the STEMI group, however, sVCAM-1 concentration at 02:00 hr was significantly higher than that during the light phase (09:00 hr; 1391 ± 38 versus 1200 ± 43 ng/mL, P < 0.05). The results suggest that diurnal variations in endogenous sVCAM-1 production in STEMI patients might be related to an attenuated circadian secretion of melatonin.

Original languageEnglish (US)
Pages (from-to)65-69
Number of pages5
JournalJournal of pineal research
Volume44
Issue number1
DOIs
StatePublished - Jan 1 2008

Keywords

  • Acute coronary syndrome
  • Acute myocardial infarction
  • Diurnal variation
  • Endothelial activation
  • Melatonin
  • ST-segment elevation myocardial infarction
  • Soluble vascular cell adhesion molecule

ASJC Scopus subject areas

  • Endocrinology

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