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Title

Further evidence for the neuroprotective role of oleanolic acid in a model of focal brain hypoxia in rats

AuthorsCaltana, Laura; Rutolo, Damián; Nieto, María Luisa ; Brusco, Alicia
KeywordsNeuroprotection
Brain injury
Neuronal death
Hypoxia
Oleanolic acid
Issue Date2014
PublisherElsevier
CitationNeurochemistry International 79: 79-87 (2014)
AbstractIschemic brain injury is a dynamic process involving oxidative stress, inflammation, cell death and the activation of endogenous adaptive and regenerative mechanisms depending on the activation of transcription factors such as hypoxia-inducible factor 1-alpha. Accordingly, we have previously described a new focal hypoxia model by direct intracerebral cobalt chloride injection. In turn, oleanolic acid, a plantderived triterpenoid, has been extensively used in Asian countries for its anti-inflammatory and antitumor properties. A variety of novel pharmacological effects have been attributed to this triterpenoid, including beneficial effects on neurodegenerative disorders - including experimental autoimmune encephalomyelitis - due to its immunomodulatory activities at systemic level, as well as within the central nervous system. In this context, we hypothesize that this triterpenoid may be capable of exerting neuroprotective effects in ischemic brain, suppressing glial activities that contribute to neurotoxicity while promoting those that support neuronal survival. In order to test this hypothesis, we used the intraperitoneal administration of oleanoic acid in adult rats for seven days previous to focal cortical hypoxia induced by cobalt chloride brain injection. We analyzed the neuroprotective effect of oleanoic acid from a morphological point of view, focusing on neuronal survival and glial reaction.
URIhttp://hdl.handle.net/10261/116909
DOI10.1016/j.neuint.2014.09.011
Identifiersdoi: 10.1016/j.neuint.2014.09.011
issn: 0197-0186
e-issn: 1872-9754
Appears in Collections:(IBGM) Artículos
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