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Acute statin treatment improves recovery after experimental intracerebral hemorrhage

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DOI: 10.4236/wjns.2013.32010    2,845 Downloads   5,173 Views   Citations

ABSTRACT

Background and Purpose: We have previously demonstrated that 2-week treatment of experimental intracerebral hemorrhage (ICH) with a daily dose of 2 mg/kg statin starting 24 hours post-injury exerts a neuroprotective effect. The present study extends our previous investigation and tests the effect of acute high-dose (within 24 hours) statin therapy on experimental ICH. Material and Methods: Fifty-six male wistar rats were subjected to ICHby stereotactic injection of 100 μl of autologous blood into the striatum. Rats were divided randomly into seven groups: saline control group (n = 8); 10, 20 and 40 mg/kg simvastatin-treated groups (n = 8); and 10, 20 and 40 mg/kg atorvastatin-treated groups (n = 8). Simvastatin or atorvastatin were administered orally at 3 and 24 hours after ICH. Neurological functional outcome was evaluated using behavioral tests (mNSS and corner turn test) at multiple time points afterICH. Animals were sacrificed at 28 days after treatment, and histological studies were completed. Results: Acute treatment with simvastatin or atorvastatin at doses of 10 and 20 mg/kg, but not at 40 mg/kg, significantly enhanced recovery of neurological function starting from 2 weeks post-ICH and persisting for up to 4 weeks postICH. In addition, at doses of 10 mg/kg and 20 mg/kg, histological evaluations revealed that simvastatin or atorvastatin reduced tissue loss, increased cell proliferation in the subventricular zone and enhanced vascular density and synaptogenesis in the hematoma boundary zone when compared to salinetreated rats. Conclusions: Treatment with simvastatin or atorvastatin at doses of 10 and 20 mg/kg significantly improves neurological recovery after administration during the first 24 hours after ICH. Decreased tissue loss, increased cell proliferation and vascularity likely contribute to improved functional recovery in rats treated with statins after ICH.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Yang, D. , Zhang, J. , Han, Y. , James, E. , Chopp, M. and Seyfried, D. (2013) Acute statin treatment improves recovery after experimental intracerebral hemorrhage. World Journal of Neuroscience, 3, 69-75. doi: 10.4236/wjns.2013.32010.

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