title: Ischemic pretreatment delays ischemic brain vasospasm injury in gerbils.
abstract: Three experiments were conducted for the present study. First, to elucidate the mechanism and functional significance underlying ischemic vasoconstriction, we investigated the relationship between arteriolar constriction and tissue energy metabolism during bilateral common carotid artery occlusion in gerbils. Second, to identify differences in the postischemic recovery of physiologic parameters between short and prolonged brain ischemia, we measured changes in regional cerebral blood flow, microvessel diameter, brain temperature, and electrophysiologic response. Third, to explore the physiological mechanism of ischemic tolerance, we studied vascular response and intracerebral oxygenation states after acute global ischemia with and without pretreatment by mild ischemic stress. Here, we identify one of the physiologic mechanisms of the ischemic tolerance caused by brief ischemic pretreatment.
authors.affiliation: Division of Medical Devices for Diagnoses, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan. seiyama.akitoshi.7x@kyoto-u.ac.jp.
authors.forename: Akitoshi
authors.initials: A
authors.lastname: Seiyama
authors.affiliation: Division of Medical Devices for Diagnoses, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
authors.forename: Nao
authors.initials: N
authors.lastname: Yoshikawa
authors.affiliation: Division of Medical Devices for Diagnoses, Human Health Sciences, Graduate School of Medicine, Kyoto University, 53 Shogoin, Kawahara-cho, Sakyo-ku, Kyoto, 606-8507, Japan.
authors.forename: Yukio
authors.initials: Y
authors.lastname: Imamura
mesh_terms: D000818:Animals; D002545:Brain Ischemia / Q000503:physiopathology*; D005849:Gerbillinae; D019194:Ischemic Preconditioning; D020301:Vasospasm, Intracranial / Q000517:prevention & control*