Objective To observe the changes of brain function in patients with trigeminal neuralgia after administration of flurbiprofen axetil by using the resting-state functional magnetic resonance imaging(fMRI)and based on the amplitude of low-frequency fluctuation(ALFF). Methods Resting fMRI data of 20 patients with trigeminal neuralgia before and after treatment with flurbiprofen axetil were collected by 1.5T magnetic resonance imaging system.The resting fMRI data were pretreated by Statistical Parametric Mapping and DPABI(a toolbox for Data Processing and Analysis for Brain Imaging)software,and the difference of low-frequency oscillation amplitude of brain spontaneous activity before and after treatment with flurbiprofen axetil was analyzed by ALFF. Results The Visual Analogue Scale of pain intensity after flurbiprofen axetil injection was significantly lower than that before administration,and the pain relieved significantly(P=0.000).The ALFF values of right dorsolateral prefrontal lobe,bilateral medial prefrontal lobe,and right middle cingulate gyrus in patients treated with flurbiprofen axetil at rest were significantly lower than those before administration(P=0.000). Conclusions The analgesic effect of flurbiprofen axetil is exerted on the central system.This agent can inhibit the abnormal brain function caused by chronic pain stimulation and thus reduce pain.However,the specific mechanism needs further investigations.
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