title: [ACUTE CORONARY SYNDROME WITHOUT ST SEGMENT ELEVATION: POSSIBILITIES FOR PREDICTING THE CLINICAL COURSE AT THE POST-HOSPITAL (6 AND 12 MONTHS) STAGE].
abstract: OBJECTIVE
  To measure blood IL-6, IL-10, creatinine levels, calcium, sodium and potassium in blood and saliva, melatonin in urine of patients with acute coronary syndrome without ST segment elevation for the prediction of the clinical course at the post-hospital stage.
  
  
  METHODS
  The study included 93 patients with complicated (n = 46) and uncomplicated (n = 47) coronary syndrome without ST segment elevation. Blood IL-6, IL-1, creatinine levels, calcium, sodium and potassium in blood and saliva, melatoni n in urine were determined on days 1-3 after hospitalization. 6-hydroxymelatonin was measured by HPLC in urine collected between 23 p.m. and 8 a.m., melatonin i in urine collected between 8 a.m. and 23 p.m.
  
  
  RESULTS
  Complicated coronary syndrome was associated with increased levels of melatonin (night), blood IL-10 and Na, salivary, Na and Ca while the uncomplicated condition with increased blood melatonin (daytime), IL-6, creatinine, Ca, Na, K, and salivary K. 90 patients were followed up within 12 months after discharge. End-points developed in 36 (40%) of them. Logistic analysis yielded variables and 2 logistic regression equations The data on night melatonin +5 and +4 were included in ROC analysis. The night melatonin +5 values over 0.7453 were associated with increased risk of complications in the post-hospital period (6 months) and values of 0.7453 or lower with the enhanced probability of uncomplicated clinical course. Prognostic sensitivity was estimated at 90%, specificity at -54.39%. The night melatonin +4 values over 0.2903 were associated with increased risk of complications in the post-hospital period (12 months) and values of 0.2903 or lower with the enhanced probability of uncomplicated clinical course. Prognostic sensitivity was estimated at 77.8%, specificity at -59.26%.
  
  
  CONCLUSIONS
  The night melatonin +5 and +4 models can be used to predict the clinical course of acute coronary syndrome during 6 and 12 months of the post-hospitalization period.
mesh_terms: D054058:Acute Coronary Syndrome / Q000150:complications / Q000175:diagnosis / Q000378:metabolism / Q000401:mortality; D000368:Aged; D002118:Calcium / Q000097:blood; D003404:Creatinine / Q000097:blood; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D016753:Interleukin-10 / Q000097:blood*; D015850:Interleukin-6 / Q000097:blood*; D008297:Male; D008550:Melatonin / Q000031:analogs & derivatives* / Q000652:urine; D008875:Middle Aged; D009203:Myocardial Infarction / Q000453:epidemiology / Q000209:etiology; D011188:Potassium / Q000097:blood; D011237:Predictive Value of Tests; D011379:Prognosis; D018570:Risk Assessment; D012426:Russia / Q000453:epidemiology; D012964:Sodium / Q000378:metabolism
chemical_list: D015850:Interleukin-6; D016753:Interleukin-10; D012964:Sodium; D003404:Creatinine; D008550:Melatonin; D011188:Potassium; D002118:Calcium; C012365:6-hydroxymelatonin