title: Circulating serum adiponectin levels in patients with coronary artery disease: relationship to atherosclerotic burden and cardiac function.
abstract: BACKGROUND
  Abnormal adipocyte function is implicated in both the pathophysiology of coronary heart disease (CHD) and cardiac function, where adiponectin provides a putative link. However, the utility of adiponectin as a discriminator of CHD severity is unclear and may be confounded by cardiac function. We hypothesized that plasma adiponectin would relate to indices of coronary artery disease severity (coronary atheroma scores, CAS), ejection fraction (EF) and regional wall motion abnormalities (RWMA) therein.
  
  
  METHODS
  We measured adiponectin using a cross-sectional approach, we measured plasma adiponectin enzyme-linked immunosorbent assay in 204 consecutive patients (aged 34-81 years) undergoing elective coronary angiography.
  
  
  RESULTS
  Levels of adiponectin decreased in an ordinal fashion across tertiles of increasing CAS (P = 0.047), but were nonsignificantly correlated to absolute values of CAS (P = 0.06). Adiponectin levels were unrelated to left ventricular dysfunction related measures of RWMA or EF. On multivariate analysis, (including factors relating to CHD risk, history and medication) adiponectin levels were independently inversely associated with triglycerides (P = 0.001), CAS tertiles (P = 0.01) and positively with age (P < 0.001).
  
  
  CONCLUSIONS
  Levels of adiponectin decreased with coronary artery disease severity, without impact from systolic dysfunction, but levels may be moderated through established CHD risk factors such as smoking and triglycerides. Further work is warranted as to the clinical prognostic utility of this marker amongst CHD patients.
authors.affiliation: Haemostasis Thrombosis and Vascular Biology Unit, University Department of Medicine, City Hospital, Birmingham, UK.
authors.forename: J V
authors.initials: JV
authors.lastname: Patel
authors.forename: A
authors.initials: A
authors.lastname: Abraheem
authors.forename: O
authors.initials: O
authors.lastname: Dotsenko
authors.forename: J
authors.initials: J
authors.lastname: Creamer
authors.forename: M
authors.initials: M
authors.lastname: Gunning
authors.forename: E A
authors.initials: EA
authors.lastname: Hughes
authors.forename: G Y H
authors.initials: GY
authors.lastname: Lip
mesh_terms: D052242:Adiponectin / Q000097:blood*; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000704:Analysis of Variance; D050197:Atherosclerosis / Q000097:blood* / Q000000981:diagnostic imaging; D015415:Biomarkers / Q000097:blood; D003324:Coronary Artery Disease / Q000097:blood* / Q000000981:diagnostic imaging; D003430:Cross-Sectional Studies; D003920:Diabetes Mellitus / Q000097:blood / Q000000981:diagnostic imaging; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011859:Radiography; D012737:Sex Factors; D012907:Smoking; D018709:Statistics, Nonparametric; D013318:Stroke Volume; D014280:Triglycerides / Q000097:blood
chemical_list: D052242:Adiponectin; D015415:Biomarkers; D014280:Triglycerides