title: Advanced age is associated with endothelial dysfunction in healthy elderly subjects.
abstract: BACKGROUND
  Aging is associated with an increased risk for atherosclerosis in which endothelial dysfunction is an early marker.
  
  
  OBJECTIVE
  The purpose of this study was to determine if endothelial function is altered with increasing age in healthy subjects.
  
  
  METHODS
  The study population consisted of 30 elderly and 36 younger subjects free from major cardiovascular risk factors. Transthoracic echocardiography was performed for each subject to rule out structural heart disease. Endothelial function was evaluated by flow-mediated dilation (FMD) of the brachial artery via ultrasound.
  
  
  RESULTS
  Baseline characteristics of the elderly and the younger group were similar, except for age (mean age: 71.3 +/- 5.8 vs. 26.5 +/- 7.2). Transthoracic echocardiography was normal in all subjects. FMD of the elderly group was significantly lower than the younger group (7.9 +/- 3.1 in the elderly, 10.8 +/- 1.9 in the younger group, p < 0.001). A negative relationship was found between FMD and age (r = -0.528, p < 0.001).
  
  
  CONCLUSIONS
  It can be concluded that endothelial function detected by FMD declines with increasing age in healthy human subjects. Advanced age is a predictor of impaired endothelial function.
authors.affiliation: Division of Geriatric Medicine, Hacettepe University, Faculty of Medicine, Ankara, Turkey. bbyavuz@hacettepe.edu.tr
authors.forename: B B
authors.initials: BB
authors.lastname: Yavuz
authors.forename: B
authors.initials: B
authors.lastname: Yavuz
authors.forename: Dede D
authors.initials: DD
authors.lastname: Sener
authors.forename: M
authors.initials: M
authors.lastname: Cankurtaran
authors.forename: M
authors.initials: M
authors.lastname: Halil
authors.forename: Z
authors.initials: Z
authors.lastname: Ulger
authors.forename: N
authors.initials: N
authors.lastname: Nazli
authors.forename: G
authors.initials: G
authors.lastname: Kabakci
authors.forename: K
authors.initials: K
authors.lastname: Aytemir
authors.forename: L
authors.initials: L
authors.lastname: Tokgozoglu
authors.forename: A
authors.initials: A
authors.lastname: Oto
authors.forename: S
authors.initials: S
authors.lastname: Ariogul
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001916:Brachial Artery / Q000502:physiology*; D004452:Echocardiography; D004730:Endothelium, Vascular / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012016:Reference Values; D012039:Regional Blood Flow / Q000502:physiology; D013318:Stroke Volume / Q000502:physiology; D014664:Vasodilation / Q000502:physiology*