title: Intraischemic hypothermia during pretreatment with sublethal ischemia reduces the induction of ischemic tolerance in the gerbil hippocampus.
abstract: We examined whether mild brain hypothermia during pretreatment with sublethal 2-min ischemia affected the tolerance to subsequent lethal 5-min ischemia. The neuronal densities in the hippocampal CA1 sector of gerbils preconditioned at mild brain hypothermia (32% of normal) were significantly lower than those in gerbils preconditioned at brain normothermia (70% of normal). 72-kDa heat-shock protein immunoreactivity in the CA1 sector preconditioned at mild hypothermia was reduced. These results suggest that mild brain hypothermia during pretreatment with sublethal ischemia reduces the tolerance to subsequent lethal ischemia.
authors.affiliation: Department of Neurosurgery, National Defense Medical College, Saitama, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Wada
authors.forename: T
authors.initials: T
authors.lastname: Miyazawa
authors.forename: H
authors.initials: H
authors.lastname: Kato
authors.forename: N
authors.initials: N
authors.lastname: Nomura
authors.forename: A
authors.initials: A
authors.lastname: Yano
authors.forename: K
authors.initials: K
authors.lastname: Shima
authors.forename: H
authors.initials: H
authors.lastname: Chigasaki
mesh_terms: D000818:Animals; D002452:Cell Count; D005849:Gerbillinae; D006624:Hippocampus / Q000098:blood supply* / Q000166:cytology; D007036:Hypothermia, Induced; D019194:Ischemic Preconditioning / Q000379:methods*; D008297:Male; D009474:Neurons / Q000166:cytology