title: Changes in plasma homocyst(e)ine in the acute phase after stroke.
abstract: OBJECTIVE
  Elevated plasma homocyst(e)ine [H(e)] concentration has been associated with an increased risk of stroke. Although the literature suggests that H(e) increases from the acute to the convalescent phase after a stroke, it is not known whether H(e) changes within the acute period.
  
  
  METHODS
  A prospective, multicenter study was conducted to examine changes in H(e) during the 2 weeks after an incident stroke. Blood samples were collected at days 1, 3, 5, 7, and between 10 and 14 days after the stroke.
  
  
  RESULTS
  Seventy-six participants (51 men) were enrolled from 9 sites from February 1997 through June 1998. Mean age was 65.6 years, and subjects had at least two H(e) measurements. The estimated mean H(e) level at baseline was 11.3+/-0.5 micromol/L, which increased consistently to a mean of 12.0+/-0.05, 12.4+/-0.5, 13.3+/-0.5, and 13.7+/-0.7 micromol/L at days 3, 5, 7, and 10 to 14, respectively. The magnitude of the change in H(e) was not affected by age, sex, smoking status, alcohol use, history of hypertension or diabetes, or Rankin Scale Score.
  
  
  CONCLUSIONS
  ; These data suggest that the clinical interpretation of H(e) after stroke and the eligibility for clinical trials assessing treatment for elevated H(e) levels require an adjustment in time since stroke to properly interpret the observed H(e) levels.
authors.affiliation: Department of Epidemiology and International Health, University of Alabama at Birmingham, Birmingham, Ala 35294-0022, USA. vjhoward@uab.edu.
authors.forename: Virginia J
authors.initials: VJ
authors.lastname: Howard
authors.forename: Elizabeth G
authors.initials: EG
authors.lastname: Sides
authors.forename: George C
authors.initials: GC
authors.lastname: Newman
authors.forename: Stanley N
authors.initials: SN
authors.lastname: Cohen
authors.forename: George
authors.initials: G
authors.lastname: Howard
authors.forename: M Rene
authors.initials: MR
authors.lastname: Malinow
authors.forename: James F
authors.initials: JF
authors.lastname: Toole
mesh_terms: D000208:Acute Disease; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003710:Demography; D005260:Female; D006710:Homocysteine / Q000097:blood*; D006711:Homocystine / Q000097:blood*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D012307:Risk Factors; D018401:Sample Size; D020521:Stroke / Q000097:blood* / Q000175:diagnosis; D013997:Time Factors; D014057:Tomography, X-Ray Computed
chemical_list: D006710:Homocysteine; D006711:Homocystine