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Ganoderma lucidum is a traditional Chinese medicine, which has been shown to have both an-ti-oxidative and anti-inlfammatory effects, and noticeably decreases both the infarct area and neuronal apoptosis of the ischemic cortex. This study aimed to investigate the protective effects and mechanisms of pretreatment with ganoderma lucidum (by intragastric administration) in cerebral ischemia/reperfusion injury in rats. Our results showed that pretreatment with ganoder-ma lucidum for 3 and 7 days reduced neuronal loss in the hippocampus, diminished the content of malondialdehyde in the hippocampus and serum, decreased the levels of tumor necrosis fac-tor-αand interleukin-8 in the hippocampus, and increased the activity of superoxide dismutase in the hippocampus and serum. hTese results suggest that pretreatment with ganoderma lucidum was protective against cerebral ischemia/reperfusion injury through its anti-oxidative and an-ti-inlfammatory actions.