title: Effect of hemoglobin vesicle, a cellular-type artificial oxygen carrier, on middle cerebral artery occlusion- and arachidonic acid-induced stroke models in rats.
abstract: Hemoglobin vesicle (HbV), which is also called liposome-encapsulated hemoglobin, functions as a hemoglobin-based oxygen carrier and is expected to be utilized in emergency situations including hemorrhagic shock and several kinds of ischemic diseases. In the present study, we evaluated the efficacy of HbV for improving stroke-related symptoms induced by middle cerebral artery (MCA) occlusion/reperfusion and an intra-internal carotid arterial injection of arachidonic acid (AA) in rats. When HbV (10 mL/kg, i.v.) was administered to rats immediately after the MCA occlusion, it reduced the cerebral infarct volumes of the cortex and total of the cortex plus sub-cortex significantly as compared with saline as a vehicle. In AA-induced stroke model, HbV (10 mL/kg, i.v.) improved the motor dysfunction score and inhibited the increase in cerebral water content suggesting it could suppress cerebral edema. These results strongly suggest that HbV would provide a novel beneficial option for the treatment of stroke, especially acute ischemic stroke.
authors.affiliation: Yokohama Research Center, Oxygenix Co. Ltd., Leading Venture Plaza 2-401, Yokohama 230-0046, Japan. komatsu@oxy-genix.com
authors.forename: Hirotsugu
authors.initials: H
authors.lastname: Komatsu
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Furuya
authors.forename: Natsue
authors.initials: N
authors.lastname: Sato
authors.forename: Katsuji
authors.initials: K
authors.lastname: Ohta
authors.forename: Akihiro
authors.initials: A
authors.lastname: Matsuura
authors.forename: Takao
authors.initials: T
authors.lastname: Ohmura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Takagi
authors.forename: Masaki
authors.initials: M
authors.lastname: Matsuura
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Yamashita
authors.forename: Makiko
authors.initials: M
authors.lastname: Itoda
authors.forename: Jiro
authors.initials: J
authors.lastname: Itoh
authors.forename: Hirohisa
authors.initials: H
authors.lastname: Horinouchi
authors.forename: Koichi
authors.initials: K
authors.lastname: Kobayashi
mesh_terms: D000818:Animals; D016718:Arachidonic Acid; D001522:Behavior, Animal; D020520:Brain Infarction / Q000209:etiology / Q000517:prevention & control; D004195:Disease Models, Animal; D016503:Drug Delivery Systems / Q000379:methods*; D007839:Functional Laterality / Q000187:drug effects; D006454:Hemoglobins / Q000008:administration & dosage*; D020244:Infarction, Middle Cerebral Artery / Q000473:pathology / Q000503:physiopathology / Q000628:therapy*; D008081:Liposomes / Q000008:administration & dosage*; D008297:Male; D009043:Motor Activity / Q000187:drug effects; D011597:Psychomotor Performance / Q000187:drug effects; D051381:Rats; D017208:Rats, Wistar; D020521:Stroke / Q000139:chemically induced / Q000473:pathology / Q000503:physiopathology / Q000628:therapy*
chemical_list: D006454:Hemoglobins; D008081:Liposomes; D016718:Arachidonic Acid