alexa An endocannabinoid tone limits excitotoxicity in vitro and in a model of multiple sclerosis.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Lora F, Petrosino S, Hernangmez M, Mestre L, Spagnolo A,

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Abstract The aim of this study was to evaluate how endocannabinoids interact with excitotoxic processes both in vitro, using primary neural cell cultures, and in vivo, in the TMEV-IDD model of multiple sclerosis. First, we observed that neuronal cells respond to excitotoxic challenges by the production of endocannabinoid molecules which in turn exerted neuroprotective effects against excitotoxicity. The inhibitor of endocannabinoid uptake, UCM707, protected specifically against AMPA-induced excitotoxicity, by activating CB(1) and CB(2) cannabinoid receptors, as well as the nuclear factor, PPARgamma. This neuroprotective effect was reverted by blocking the glial glutamate transporter, GLT-1. Mice subjected to the model of multiple sclerosis showed a decrease in the expression of GLT-1. UCM707 reversed this loss of GLT-1 and induced a therapeutic effect. Our data indicate that the enhancement of the endocannabinoid tone leads to neuroprotection against AMPA-induced excitotoxicity and provides therapeutic effects in this model of multiple sclerosis. This article was published in Neurobiol Dis and referenced in Pharmaceutica Analytica Acta

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