Previous studies have reported that 3-n-butylphthalide (NBP) had beneficial effects on stroke through multiple aspects, including decreasing the area of cerebral infarct, improving energy metabolism , inhibiting the inflammatory response and improving cerebral microvessels . Although the positive effects of NBP on cerebral ischemia and cerebral infarct have been verified in ischemic patients and animal models, the effects of NBP in aquaporin-4 (AQP-4) are still unclear. Recently, ultra-high diffusion weighted imaging was reported to be able to reflect AQP-4 changes . This study would like to evaluate the effect of 3-n-butylphthalide on expression of aquaporin-4 by ultra-high b value diffusion weighted imaging in animal model of focal cerebral ischemia at different time points.
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