The effect of pre-condition cerebella fastigial nucleus electrical stimulation within and beyond the time window of thrombolytic on ischemic stroke in the rats

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Abstract

© 2015 Tang et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Objective To investigate the effect of neurogenic neuroprotection conferred by cerebellar fastigial nucleus stimulation (FNS) and the role of PPARγ- mediated inflammation in a rat model of cerebral ischemia reperfusion. Methods After a continuous 1 hour fastigial nucleus electric stimulation, the male Sprague Dawley (SD) rats were given middle cerebral artery occlusion (MCAO) for 1, 3, 6, 9, 12 and 15 hours undergoing reperfusion with intravenous recombinant tissue plasminogen activator (rt-PA), while the control group received without FNS. After 72h of reperfusion, the neurological deficits, infarct volume and brain edema were evaluated. The brain tissue in ischemic penumbra was determined the myeloperoxidase (MPO) activity by a spectrophotometer and expression of PPARγ was measured by Rt-PCR and Western blotting. Results Our findings showed that FNS group had signific antly reduced infarct volume and brain edema, and improved neurological deficits compared with the control group, especially in 6h and 9h reperfusion subgroups(p < 0.05). The expression levels of PPARγ increased gradually and the peak may be before and after 9h reperfusion, the 3h, 6h, 9h, 12h and 15h reperfusion subgroups were higher than each control group(p < 0.05). The MPO activity of 6h, 12h and 15h reperfusion subgroups were higher than each control group(p < 0.05). Conclusions The neuroprotective effects of FNS have been shown to prolong the therapeutic window in cerebral ischemia/reperfusion, which might be related to the PPARγ mediated-inflammation in penumbral region.

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Tang, W., Dong, W., Xie, P., Cheng, P., Bai, S., Ren, Y., … Huang, W. (2015). The effect of pre-condition cerebella fastigial nucleus electrical stimulation within and beyond the time window of thrombolytic on ischemic stroke in the rats. PLoS ONE, 10(5). https://doi.org/10.1371/journal.pone.0128447

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