Fingolimod attenuates harmaline-induced pas­sive avoidance memory and motor impairments in a rat model of es­sential tremor

Anotace: Preclinical data suggest that fingolimod (FTY), a sphingosine-1-phosphate receptor modulator, could be beneficial for treating common neurological disorders, including Parkinson‘s disease, MS and epilepsy. In the current study, the effects of FTY on harmaline-induced motor and cognitive impairments were studied in male Wistar rats. Passive avoidance memory, exploratory, anxiety-related behaviours, tremor, and motor function were assessed. The memory impairments observed in harmaline-treated rats were somewhat reversed by administration of FTY. The results showed that FTY could recover step width, left and right step length, but failed to recuperate the mobility duration. FTY improved the time spent in the wire grip and rotarod. Results of our study shed light on the beneficial effects of FTY on cognition and motor function in a model of essential tremor (ET) and suggest that sphingosine-1-phosphate receptor modulators have a potential neuroprotective profile for the management of ET.