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- W1975895958 abstract "Intracerebral hemorrhage (ICH) is a devastating form of stroke. Misoprostol, a synthetic prostaglandin E1 (PGE1) analog and PGE2 receptor agonist, has shown protection against cerebral ischemia. In this study, we tested the efficacy of misoprostol in the 12-month-old mice subjected to 1 of 2 complementary ICH models, the collagenase model (primary study) and blood model (secondary study, performed in an independent laboratory). We also investigated its potential mechanism of action. Misoprostol posttreatment decreased brain lesion volume, edema, and brain atrophy and improved long-term functional outcomes. In the collagenase-induced ICH model, misoprostol decreased cellular inflammatory response; attenuated oxidative brain damage and gelatinolytic activity; and decreased high-mobility group box 1 (HMGB1) expression, Src kinase activity, and interleukin-1β expression without affecting cyclooxygenase-2 expression. Furthermore, HMGB1 inhibition with glycyrrhizin decreased Src kinase activity, gelatinolytic activity, neuronal death, and brain lesion volume. Src kinase inhibition with 4-amino-5-(4-chlorophenyl)-7-(t-butyl)pyrazolo[3,4-d]pyrimidine (PP2) decreased gelatinolytic activity and brain edema and improved neurologic function but did not decrease HMGB1 protein level. These results indicate that misoprostol protects brain against ICH injury through mechanisms that may involve the HMGB1, Src kinase, and matrix metalloproteinase-2/9 pathways." @default.
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- W1975895958 date "2015-03-01" @default.
- W1975895958 modified "2023-10-12" @default.
- W1975895958 title "PGE2 receptor agonist misoprostol protects brain against intracerebral hemorrhage in mice" @default.
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- W1975895958 doi "https://doi.org/10.1016/j.neurobiolaging.2014.12.029" @default.
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