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• W4301395599 abstract "Abstract Background. Stroke is one of the major diseases that endangers human health. It is widely reported that enriched environment (EE) can improve the neurological function in different brain injury models. Recently, relevant researches have indicated that MAPK pathway is closely related to the inflammatory response in nervous system related diseases. However, whether pre exposure to EE (EE pretreatment) has a preventive effect, and its mechanism are not clear. Therefore, this study aimed to determine the possible benefits and related mechanisms of EE in preventing brain injury after ischemia-reperfusion. Methods. Adult Sprague Dawley rats were kept in enriched or standardized environments for 21 days. Then the middle cerebral artery of rats was occluded for one hour and 30 minutes, and then reperfusion was performed. Then their neurological deficit score was evaluated. Cerebral edema, along with ELISA and protein quantities of p38MAPK, JNK, ERK, IL-1β, TNF-α, and co-localization of Iba1 were assessed. Changes in neuroinflammation and apoptosis were also detected in the penumbra cortex. Results. Our research showed that EE pretreatment significantly alleviated cerebral ischemia-reperfusion injury in rats. Including the reduction of brain edema and apoptosis, and the improvement of neurological scores. In addition, the protein level of p38MAPK was significantly down regulated in EE pretreatment group, and the downstream protein STAT1 had the same trend. In addition, immunofluorescence results showed that Iba1 in EE pretreatment group decreased, the ELISA results showed that the classical proinflammatory cytokines increased significantly, while anti-inflammatory cytokines in EE pretreatment group increased, and the same results were obtained by Western blot analysis. Conclusion. On the whole, our research demonstrated that EE pretreatment can have a protective effect on the organism by inhibiting the p38 MAPK / STAT1 pathway. Thus, EE can be one of the most promising means of disease prevention. Secondly, p38MAPK / STAT1 pathway may be a latent target for the prevention of ischemic stroke." @default.
• W4301395599 created "2022-10-05" @default.
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• W4301395599 date "2022-10-04" @default.
• W4301395599 modified "2023-10-16" @default.
• W4301395599 title "Pre Exposure to Enriched Environment Alleviates Brain Injury after Ischemia-Reperfusion by inhibiting p38MAPK/STAT1 pathway" @default.
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• W4301395599 doi "https://doi.org/10.21203/rs.3.rs-2102538/v1" @default.
• W4301395599 hasPublicationYear "2022" @default.
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