Disease-Modifying Symptomatic Treatment (DMST) Potential of Cannabinoids in Patients with Multiple Sclerosis.

With the recent introduction of a number of highly effective disease-modifying treatments (DMTs) and the resulting almost complete prevention of acute relapses in many patients with multiple sclerosis (MS), the interest of MS clinicians has gradually shifted from relapse prevention to counteraction of disease progression and the treatment of residual symptoms. Targeting the cannabinoid system with nabiximols is an approved and effective strategy for the treatment of spasticity secondary to MS. Recently, the concept of spasticity plus syndrome (SPS) was introduced to account for the evidence that spasticity often appears in MS patients in clusters with other symptoms (such as pain, bladder dysfunction, sleep, and mood disorders), where cannabinoids can also be effective due to their broader action on many immune and neuronal functions. Interestingly, outside these symptomatic benefits, extensive pre-clinical and clinical research indicated how the modulation of the cannabinoid system results in significant anti-inflammatory and neuroprotective effects, all potentially relevant for MS disease control. This evidence makes nabiximols a potential disease modifying symptomatic treatment (DMST), a concept introduced in an attempt to overcome the often artificial distinction between DMTs and symptomatic therapies (STs).
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