title: Serum S100B, brain edema, and hematoma formation in a rat model of collagenase-induced hemorrhagic stroke.
abstract: S100B, a 21-kD Ca(2+) binding protein expressed in Schwann cells and astroglia, has often been reported as a promising biomarker for ischemic stroke. In addition to ischemic stroke, the peripheral S100B level may also be useful as a biomarker for intracerebral hemorrhage (ICH). However, the kinetics and characterization of peripheral S100B in patients or experimental animal models with ICH have not been carefully examined. The present study investigated the kinetics and characteristics of the serum S100B level in a rat collagenase-induced ICH model. The serum S100B kinetics and the time-course of brain edema and hematoma formation were examined. Then, the correlations between the elevated serum S100B level and brain edema or hematoma formation were investigated. A transient elevation of serum S100B that peaked at 6 h after ICH induction was observed. The single measurement of serum S100B at 6 h after ICH induction was significantly correlated with brain edema formation and the maximal extent of the hematoma volumes. These results suggest the significance of serum S100B as a biomarker of brain damage resulting from ICH.
authors.affiliation: Molecular Function and Pharmacology Laboratories, Taisho Pharmaceutical Co., Ltd., 1-403 Yoshino-cho, Kita-ku, Saitama-shi, Saitama 331-9530, Japan. yu.tanaka@po.rd.taisho.co.jp
authors.forename: Yu
authors.initials: Y
authors.lastname: Tanaka
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Marumo
authors.forename: Hiromi
authors.initials: H
authors.lastname: Shibuta
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Omura
authors.forename: Shigeru
authors.initials: S
authors.lastname: Yoshida
mesh_terms: D000818:Animals; D015415:Biomarkers / Q000097:blood; D001929:Brain Edema / Q000473:pathology*; D002543:Cerebral Hemorrhage / Q000097:blood / Q000139:chemically induced / Q000473:pathology*; D017364:Collagenases; D004195:Disease Models, Animal; D006406:Hematoma / Q000473:pathology*; D008297:Male; D009414:Nerve Growth Factors / Q000097:blood*; D051381:Rats; D017208:Rats, Wistar; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins / Q000097:blood*; D020521:Stroke / Q000097:blood / Q000139:chemically induced / Q000473:pathology*; D013997:Time Factors
chemical_list: D015415:Biomarkers; D009414:Nerve Growth Factors; D064568:S100 Calcium Binding Protein beta Subunit; D009418:S100 Proteins; C579158:S100b protein, rat; D017364:Collagenases