Abstract
The aim of the present study was to investigate the effect of morroniside against matrix metalloproteinase (MMP)2/9 and focal cerebral ischemia/reperfusion (I/R) injury in rats. A rat model of focal cerebral I/R injury rats was established and rats were administered with 30, 90 or 270 mg/kg/day morroniside for 7 days. The expression of MMP2/9 and neuronal apoptosis were assessed. In addition, the expression of active caspase-3, B-cell lymphoma 2 (Bcl-2) and Bcl-2-associated X protein (Bax) were measured. The results revealed that MMP2 and MMP9 expression was upregulated and the percentage of apoptotic neurons was increased in rats with focal cerebral I/R injury compared with the control. However, treatment with morroniside significantly inhibited I/R-induced MMP2/9 expression and neuron apoptosis compared with the untreated I/R injury group. Morroniside administration also decreased the expression of active caspase-3 and increased the Bcl-2/Bax ratio compared with untreated rats with focal cerebral I/R injury. The inhibitory effect of morroniside on MMP2/9 expression and neuron apoptosis was dose dependent. In summary, the results of the present study suggest that morroniside is able to protect against cerebral I/R injury in the brain and may have potential as a therapeutic treatment for patients who have suffered a stroke.
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