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Kurth, M.C., Adler, C.H., Saint-Hilaire, M., Singer, C., Waters, C., LeWitt, P., et al. (1997) Tolcapone improves motor function and reduces levodopa requirement in patients with Parkinson’s disease experiencing motor fluctuations: A multicenter, double-blind, randomized, place-bo-controlled trial. Tolcapone Fluctuator Study Group I. Neurology, 48, 81-87. doi:10.1212/WNL.48.1.81

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• TITLE: Association of adverse effects with monoamine oxidase type B inhibitor and catechol-o-methyl transferase inhibitor combination therapy in Parkinson’s disease patients

  AUTHORS: Rui Zhang, Danielle C. Spengler, Marie-Helene Saint-Hilaire, Anna D. Hohler

  KEYWORDS: Catechol-O-Methyl Transferase Inhibitors; Dementia; Monoamine Oxidase Type B Inhibitors; Motor Fluctuations; Parkinson’s Disease

  JOURNAL NAME: Advances in Parkinson's Disease, Vol.1 No.1, August 28, 2012

  ABSTRACT: Currently, levodopa is the most effective and commonly used medication to control motor symptoms in Parkinson’s disease (PD). However, its long-term use is associated with adverse effects (AEs). Combination therapy of a monoamine oxidase type B inhibitor (MAOBI) with levodopa or a catechol-O-methyl transferase inhibitor (COMTI) with levodopa provides benefits to PD patients. Direct comparison of efficacy and side effect profiles is complex. The aim of this study is to investigate the different AE profiles of MAOBI and COMTI combination therapies. Data used to analyze the AEs of different PD medications were retrieved from “The Boston University Medical Center’s Parkinson’s Disease and Movement Disorder Database”. Ten categories of AEs were compared between patients receiving MAOBI and COMTI combination treatment. In total, 87 subjects were included in the analysis. Out of ten AEs, the presence of dementia was signifi- cantly different between the MAOBI and COMTI groups with an OR of 6.9 (COMTI vs MAOBI, 95% CI 1.3 - 37.0). Motor fluctuations were also found to be differently distributed in the two medication groups with an OR of 3.1 (COMTI vs MAOBI, 95% CI 1.0 - 9.8). In this retrospective database analysis of patients treated with combination treatment for PD, combination therapy of a COMTI with levodopa was more likely to be associated with dementia and motor fluctuations than a MAOBI with levodopa.