title: Adiponectin and cardiac geometry and function in elderly: results from two community-based cohort studies.
abstract: OBJECTIVE
  Several smaller studies have indicated that adiponectin might be associated with left ventricular (LV) mass and function, but community-based studies with adequate sample size and adjustment for potential confounders are lacking. Our objective was to investigate such associations in two large community-based studies of elderly.
  
  
  METHODS
  Cross-sectional.
  
  
  METHODS
  We evaluated cross-sectional relations between serum adiponectin and echocardiographic measures of cardiac geometry and function (LV mass index, LV relative wall thickness, LV end-diastolic diameter, left atrial diameter, ejection fraction, LV isovolumic relaxation time, and E/A ratio) in 954 70-year-old participants (50% women) of the Prospective Investigation of the Vasculature in Uppsala Seniors (PIVUS), and in 427 71-year-old men from the Uppsala Longitudinal Study of Adult Men (ULSAM).
  
  
  RESULTS
  In models adjusted for age, sex, body mass index, systolic blood pressure, antihypertensive treatment, antidiabetic treatment, lipid-lowering medication, fasting blood glucose, total cholesterol, high-density lipoprotein cholesterol, creatinine, and smoking, adiponectin was inversely associated with ejection fraction in men (beta, -1.62; 95% confidence interval (CI), -2.50, -0.75 in PIVUS; beta, -1.35; 95% CI, -2.41, -0.29 in ULSAM), but not in women. After additional adjustment for N-terminal pro-brain natriuretic peptide (NT-proBNP), the association between adiponectin and ejection fraction was attenuated (beta, -0.98; 95% CI, -1.86, -0.10 in PIVUS; beta, -0.75; 95% CI, -1.84, 0.35 in ULSAM).
  
  
  CONCLUSIONS
  Serum adiponectin concentrations were associated with ejection fraction in men, and these associations were partially attenuated by NT-proBNP. Our results imply that adiponectin may be associated with systolic function through pathways that involve natriuretic peptides.
authors.affiliation: Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, PO Box 281, SE-171 77 Stockholm, Sweden.
authors.forename: Stefan
authors.initials: S
authors.lastname: Gustafsson
authors.forename: Lars
authors.initials: L
authors.lastname: Lind
authors.forename: Björn
authors.initials: B
authors.lastname: Zethelius
authors.forename: Per
authors.initials: P
authors.lastname: Venge
authors.forename: Allan
authors.initials: A
authors.lastname: Flyvbjerg
authors.forename: Stefan
authors.initials: S
authors.lastname: Söderberg
authors.forename: Erik
authors.initials: E
authors.lastname: Ingelsson
mesh_terms: D052242:Adiponectin / Q000097:blood*; D000367:Age Factors; D000368:Aged; D001794:Blood Pressure / Q000502:physiology; D015992:Body Mass Index; D015331:Cohort Studies; D003430:Cross-Sectional Studies; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000033:anatomy & histology* / Q000502:physiology*; D006334:Heart Function Tests; D006801:Humans; D008055:Lipids / Q000097:blood; D008137:Longitudinal Studies; D008297:Male; D020097:Natriuretic Peptide, Brain / Q000097:blood; D010446:Peptide Fragments / Q000097:blood; D012307:Risk Factors; D012737:Sex Factors; D013318:Stroke Volume / Q000502:physiology*; D055105:Waist Circumference
chemical_list: D052242:Adiponectin; D008055:Lipids; D010446:Peptide Fragments; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain