title: Plasma S100B level after acute spontaneous intracerebral hemorrhage.
abstract: OBJECTIVE
  We sought to determine plasma S100B level after acute (<24 hours) spontaneous intracerebral hemorrhage (ICH) and to study its relation with neurological outcome.
  
  
  METHODS
  We determined S100B concentration on plasma samples from 78 ICH patients on admission. Clinical (Glasgow Coma Scale and National Institutes of Health Stroke Scale [NIHSS] scores) and radiological information (ICH and perihematomal edema volumes) were collected at baseline and follow-up visits. Early neurological deterioration, defined as the increase of >or=4 points in the NIHSS score at 48 hours, and unfavorable outcome (modified Rankin Scale >2) at 3 months were also recorded.
  
  
  RESULTS
  The median S100B level was higher than our laboratory reference values for healthy controls (103.6 versus 48.5 pg/mL; P<0.001) and a positive correlation was observed between S100B level and baseline ICH volume (r=0.45; P<0.0001). The median S100B level was higher in patients who deteriorated early (256.8 versus 89.7 pg/mL; P=0.001) and also in patients with an unfavorable outcome (136 versus 75.9 pg/mL; P=0.003). Multivariate analysis showed baseline ICH volume as the best predictor for both early neurological deterioration (odds ratio 15; 95% CI, 2.9 to 76.3) and unfavorable outcome at 3 months (odds ratio 17; 95% CI, 2.0 to 142).
  
  
  CONCLUSIONS
  Increased S100B level is found after acute spontaneous ICH, in association with a worse early and late evolution, and closely related to initial hematoma volume.
authors.affiliation: Neurovascular Research Laboratory, Stroke Unit, Departament de Medicina, Universitat Autònoma de Barcelona, Hospital General Vall d'Hebron, Barcelona, Spain. 35070pdm@comb.es
authors.forename: Pilar
authors.initials: P
authors.lastname: Delgado
authors.forename: Jose
authors.initials: J
authors.lastname: Alvarez Sabin
authors.forename: Esteban
authors.initials: E
authors.lastname: Santamarina
authors.forename: Carlos A
authors.initials: CA
authors.lastname: Molina
authors.forename: Manuel
authors.initials: M
authors.lastname: Quintana
authors.forename: Anna
authors.initials: A
authors.lastname: Rosell
authors.forename: Joan
authors.initials: J
authors.lastname: Montaner
mesh_terms: D000208:Acute Disease; D000368:Aged; D000369:Aged, 80 and over; D002543:Cerebral Hemorrhage / Q000097:blood* / Q000503:physiopathology; D005260:Female; D006406:Hematoma / Q000097:blood; D006801:Humans; D008297:Male; D008875:Middle Aged; D009414:Nerve Growth Factors / Q000097:blood*; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins / Q000097:blood*; D013997:Time Factors
chemical_list: D009414:Nerve Growth Factors; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins; C579160:S100B protein, human