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Preclinical models of muscle spasticity: valuable tools in the development of novel treatment for neurological diseases and conditions

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Abstract

Poor validity of preclinical animal models is one of the most commonly discussed explanations for the failures to develop novel drugs in general and in neuroscience in particular. However, there are several areas of neuroscience such as injury-induced spasticity where etiological factor can be adequately recreated and models can focus on specific pathophysiological mechanisms that likely contribute to spasticity syndrome in humans (such as motoneuron hyperexcitability and spinal hyperreflexia). Methods used to study spasticity in preclinical models are expected to have a high translational value (e.g., electromyogram (EMG)-based electrophysiological tools) and can efficiently assist clinical development programs. However, validation of these models is not complete yet. First, true predictive validity of these models is not established as clinically efficacious drugs have been used to reverse validate preclinical models while newly discovered mechanisms effective in preclinical models are yet to be fully explored in humans (e.g., 5-HT2C receptor inverse agonists, fatty acid amid hydrolase inhibitors). Second, further efforts need to be invested into cross-laboratory validation of study protocols and tools, adherence to the highest quality standards (blinding, randomization, pre-specified study endpoints, etc.), and systematic efforts to replicate key sets of data. These appear to be readily achievable tasks that will enable development not only of symptomatic but also of disease-modifying therapy of spasticity, an area that seems to be currently not in focus of research efforts.

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This work has been supported by a grant from the Russian Ministry of Health.

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  1. Institute of Pharmacology, Pavlov Medical University, St. Petersburg, Russia

    Anton Bespalov, Liudmila Mus & Edwin Zvartau

  2. Partnership for Assessment and Accreditation of Scientific Practice, Heidelberg, Germany

    Anton Bespalov

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Bespalov, A., Mus, L. & Zvartau, E. Preclinical models of muscle spasticity: valuable tools in the development of novel treatment for neurological diseases and conditions. Naunyn-Schmiedeberg's Arch Pharmacol 389, 457–466 (2016). https://doi.org/10.1007/s00210-016-1215-9

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