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Canna~Fangled Abstracts

Cannabinoid Effect and Safety in Spasticity Following Stroke: A Double-Blind Randomized Placebo-Controlled Study

By June 23, 2022July 12th, 2022No Comments

. 2022 Jun 23;13:892165.

doi: 10.3389/fneur.2022.892165. eCollection 2022.

Lucio Marinelli 1 2, Luca Puce 1, Laura Mori 1 3, Massimo Leandri 1, Gian Marco Rosa 4 5, Antonio Currà 6, Francesco Fattapposta 7, Carlo Trompetto 1 3
Affiliations 

Abstract

Background: Nabiximols is a cannabis-based drug to treat spasticity-associated symptoms currently approved for patients with multiple sclerosis only. Cannabinoids are useful in an increasing number of medical conditions but may bear an increased risk for cardiovascular events. SativexStroke is a double-blind randomized placebo-controlled crossover monocentric clinical trial investigating the efficacy and safety of nabiximols in patients with spasticity following stroke.

Methods: Patients were treated with nabiximols oromucosal spray or placebo and assessed before and after two phases of 1-month duration each. Cardiovascular safety was assessed before and during the trial. Primary endpoints were changes in spasticity numeric rating scale scores and electromyographic recording of the stretch reflex in affected wrist flexors. Secondary outcome measures were numeric rating scale scores for pain, sleep and bladder function, the number of daily spasms and clinical assessment of spasticity with the modified Ashworth scale. The study was registered with the EudraCT number 2016-001034-10.

Results: Between May 2, 2018, and February 20, 2020, 41 patients entered the study. Seven patients did not complete the study, so 34 were included in the analysis. Two serious adverse events occurred, but none related to cardiovascular function. Primary and secondary efficacy outcome measures did not change from baseline during nabiximols treatment relative to placebo.

Conclusion: This study suggests that nabiximols use is probably safe in stroke patients, therefore cannabinoid usefulness may be further investigated. The lack of nabiximols effect could be related to low pain levels in recruited patients or different spasticity mechanisms between post-stroke and multiple sclerosis patients. Similarly, a beneficial effect of nabiximols could have emerged if more patients with a higher level of spasticity at baseline were recruited.

Clinical trial registration: https://www.clinicaltrialsregister.eu/ctr-search/trial/2016-001034-10/IT.

Keywords: CBD, Sativex, THC, blood pressure, cannabinoid, cerebrovascular disorders, nabiximols, pain

Conflict of interest statement

Unrelated to this project, Almirall Italia provided research funding to CT. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

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References

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