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Defining a role for laquinimod in multiple sclerosis
1Department of Neurology, Heinrich-Heine-University, Moorenstraße 5, 40225 Düsseldorf, Germany.
Abstract:
Multiple sclerosis (MS), an inflammatory disease affecting the central nervous system, is considered to exhibit an important neurodegenerative component as well. Laquinimod is an orally administered quinoline-3-carboxamide under development for the treatment of MS. In vitro and animal studies have revealed various mechanisms by which laquinimod may exert its effects on the immune and nervous systems. These include effects on the innate immune system that promote the differentiation of anti-inflammatory/regulatory T cells, the activation of microglia cells, an increase in the expression of brain-derived neurotrophic factor, as well as the prevention of inflammation-induced excitotoxicity. Two phase III studies revealed the clinical benefits of laquinimod in patients with relapsing-remitting MS and exhibited a benign safety profile for this drug. Ongoing clinical trials will help to define the optimal dose and indication for laquinimod in MS. This article reviews current experimental and clinical evidence on the role of laquinimod in patients with this disabling disease.
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