Hyperthermia-Induced Neuronal Protection against Ischemic Injury in Gerbils

Author:

Kitagawa Kazuo,Matsumoto Masayasu,Tagaya Masafumi,Kuwabara Keisuke,Hata Ryuji,Handa Nobuo,Fukunaga Ryuzo,Kimura Kazufumi1,Kamada Takenobu

Affiliation:

1. Biomedical Research Center, Osaka University Medical School, Osaka, Japan

Abstract

We investigated the effect of hyperthermic pretreatment before induction of ischemia using a gerbil model of 5-min forebrain ischemia. A single hyperthermic treatment 18 h before ischemia exhibited a partial protective effect, and repetitive hyperthermic pretreatments at 18-h intervals before ischemia showed clear protection against neuronal death in the CA1 area of the hippocampus, whereas single hyperthermic treatment 3, 6, 24, or 50 h before ischemia exhibited little protective effect. This transient and cumulative neuroprotective effect of hyperthermic pretreatment strongly suggested the involvement of stress reactions after hyperthermia in the protective mechanism against ischemic neuronal death.

Publisher

SAGE Publications

Subject

Cardiology and Cardiovascular Medicine,Clinical Neurology,Neurology

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