Drug-Induced Hypothermia as Beneficial Treatment before and after Cerebral Ischemia
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Drug-Induced Hypothermia as Beneficial Treatment before and after Cerebral Ischemia. / Johansen, Flemming F; Hasseldam, Henrik; Rasmussen, Rune Skovgaard; Bisgård, Anne Sofie; Bonfils, Peter Kramshøj; Poulsen, Steen Seier; Hansen-Schwartz, Jacob.
I: Pathobiology, Bind 81, Nr. 1, 2014, s. 42-52.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Drug-Induced Hypothermia as Beneficial Treatment before and after Cerebral Ischemia
AU - Johansen, Flemming F
AU - Hasseldam, Henrik
AU - Rasmussen, Rune Skovgaard
AU - Bisgård, Anne Sofie
AU - Bonfils, Peter Kramshøj
AU - Poulsen, Steen Seier
AU - Hansen-Schwartz, Jacob
N1 - Copyright © 2013 S. Karger AG, Basel.
PY - 2014
Y1 - 2014
N2 - Objectives: Hypothermia is still unproven as beneficial treatment in human stroke, although in animal models, conditioning the brain with hypothermia has induced tolerance to insults. Here, we delineate the feasibility of drug-induced mild hypothermia in reducing ischemic brain damage when conditioning before (preconditioning) and after (postconditioning) experimental stroke. Methods: Hypothermia was induced in rats with a bolus of 6 mg/kg talipexole followed by 20 h continuous talipexole infusion of 6 mg/kg in total. Controls received similar treatment with saline. The core body temperature was continuously monitored. In preconditioning, hypothermia was terminated before either reversible occlusion of the middle cerebral artery (MCAO) for 60 min or global ischemia for 10 min with 2-vessel occlusion and hypotension. In postconditioning, rats experienced 60 min of MCAO before hypothermia was induced either immediately or with 3 h delay. Rats survived ischemia for 2, 7 or 90 days. Infarct volumes were quantified by stereology. Additional experiments of methodological relevance were included in the study. Results: Talipexole induced mild hypothermia (35.1 ± 1.1 to 36.0 ± 0.5°C) for
AB - Objectives: Hypothermia is still unproven as beneficial treatment in human stroke, although in animal models, conditioning the brain with hypothermia has induced tolerance to insults. Here, we delineate the feasibility of drug-induced mild hypothermia in reducing ischemic brain damage when conditioning before (preconditioning) and after (postconditioning) experimental stroke. Methods: Hypothermia was induced in rats with a bolus of 6 mg/kg talipexole followed by 20 h continuous talipexole infusion of 6 mg/kg in total. Controls received similar treatment with saline. The core body temperature was continuously monitored. In preconditioning, hypothermia was terminated before either reversible occlusion of the middle cerebral artery (MCAO) for 60 min or global ischemia for 10 min with 2-vessel occlusion and hypotension. In postconditioning, rats experienced 60 min of MCAO before hypothermia was induced either immediately or with 3 h delay. Rats survived ischemia for 2, 7 or 90 days. Infarct volumes were quantified by stereology. Additional experiments of methodological relevance were included in the study. Results: Talipexole induced mild hypothermia (35.1 ± 1.1 to 36.0 ± 0.5°C) for
U2 - 10.1159/000352026
DO - 10.1159/000352026
M3 - Journal article
C2 - 23989388
VL - 81
SP - 42
EP - 52
JO - Pathobiology
JF - Pathobiology
SN - 1015-2008
IS - 1
ER -
ID: 57755122