Brain proteomics identifies potential simvastatin targets in acute phase of stroke in a rat embolic model

Mireia Campos-Martorell, Nelida Salvador, Marta Monge, Francesc Canals, Lidia García-Bonilla, Mar Hernández-Guillamon, María Irene Ayuso, Pilar Chacõn, Anna Rosell, Alberto Alcazar, Joan Montaner

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    15 Citations (Scopus)

    Abstract

    Finding an efficient neuroprotectant is of urgent need in the field of stroke research. The goal of this study was to test the effect of acute simvastatin administration after stroke in a rat embolic model and to explore its mechanism of action through brain proteomics. To that end, male Wistar rats were subjected to a Middle Cerebral Arteria Occlusion and simvastatin (20 mg/kg s.c) (n = 11) or vehicle (n = 9) were administered 15 min after. To evaluate the neuroprotective mechanisms of simvastatin, brain homogenates after 48 h were analyzed by two-dimensional fluorescence Difference in Gel Electrophoresis (DIGE) technology. We confirmed that simvastatin reduced the infarct volume and improved neurological impairment at 48 h after the stroke in this model. Considering our proteomics analysis, 66 spots, which revealed significant differences between groups, were analyzed by matrix-assisted laser desorption/ionization-time of flight mass spectrometry allowing the identification of 27 proteins. From these results, we suggest that simvastatin protective effect can be partly explained by the attenuation of the oxidative and stress response at blood-brain barrier level after cerebral ischemia. Interestingly, analyzing one of the proteins (HSP75) in plasma from stroke patients who had received simvastatin during the acute phase, we confirmed the results found in the pre-clinical model. © 2014 International Society for Neurochemistry.
    Original languageEnglish
    Pages (from-to)301-312
    JournalJournal of Neurochemistry
    Volume130
    Issue number2
    DOIs
    Publication statusPublished - 1 Jan 2014

    Keywords

    • acute phase treatment
    • embolic cerebral ischemia
    • proteomics
    • rat
    • simvastatin
    • stroke

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