title: Elevated white blood cell count is associated with arterial stiffness.
abstract: OBJECTIVE
  White blood cell (WBC) count, a usual marker of systemic inflammation, is known to be associated with atherosclerotic cardiovascular disease. The aim of the present study was to determine the association of WBC count with arterial stiffness measured by brachial-ankle pulse wave velocity (baPWV).
  
  
  RESULTS
  We examined the association between WBC count and baPWV in 788 Korean adults (375 men, 413 women) in a health examination program. The odds ratios for a high baPWV were calculated using multivariate logistic regression analysis after adjusting for confounding variables across WBC count quartiles (Q1: <or=5190, Q2: 5200-6080, Q3: 6090-7310, and Q4: >or=7320 cells/mm(3)). A high baPWV was defined as more than 1440 cm/s (>75th percentile). Age-adjusted baPWV mean values gradually increased with WBC quartiles (Q1=1294, Q2=1322, Q3=1347, and Q4=1367 cm/s). The odds ratios (95% CI) for a high baPWV in each WBC count quartile were 1.00, 1.34 (0.61-3.00), 2.20 (0.96-5.06), and 2.69 (1.15-6.47) after adjusting for age, sex, cigarette smoking, alcohol intake, regular exercise, body mass index (BMI), mean arterial blood pressure, fasting plasma glucose, triglyceride, HDL-cholesterol, gamma-glutamyltransferase (GGT), and uric acid.
  
  
  CONCLUSIONS
  These findings indicate that elevated WBC count is associated with arterial stiffness. Accordingly, early detection of an elevated WBC count is important for arterial function and the assessment of cardiovascular risk.
authors.affiliation: Department of Family Medicine, Yonsei University, College of Medicine, Seoul, South Korea.
authors.forename: Yong-Jae
authors.initials: YJ
authors.lastname: Lee
authors.forename: Ji-Won
authors.initials: JW
authors.lastname: Lee
authors.forename: Jong-Koo
authors.initials: JK
authors.lastname: Kim
authors.forename: Jung-Hyun
authors.initials: JH
authors.lastname: Lee
authors.forename: Jin-Hyun
authors.initials: JH
authors.lastname: Kim
authors.forename: Kil-Young
authors.initials: KY
authors.lastname: Kwon
authors.forename: Hye-Ree
authors.initials: HR
authors.lastname: Lee
authors.forename: Duk-Chul
authors.initials: DC
authors.lastname: Lee
authors.forename: Jae-Yong
authors.initials: JY
authors.lastname: Shim
mesh_terms: D000328:Adult; D000368:Aged; D000842:Ankle / Q000098:blood supply; D001158:Arteries / Q000503:physiopathology*; D001696:Biomechanical Phenomena; D001794:Blood Pressure; D001916:Brachial Artery; D002318:Cardiovascular Diseases / Q000503:physiopathology; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007958:Leukocyte Count; D008297:Male; D008875:Middle Aged; D010991:Plethysmography; D012044:Regression Analysis