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Research progress of new drug Opicapone for Parkinson′s disease |
CHEN Xinjie1 LUO Enli2 CHEN Yafang1 LUO Xiaodong2 ZHENG Chunye2 |
1.The Second Clinical Medical School, Guangzhou University of Chinese Medicine, Guangdong Province, Guangzhou 510405, China; 2.Department of Neurology, Fangcun Hospital, Guangdong Provincial Hospital of Traditional Chinese Medicine, Guangdong Province, Guangzhou 510370, China
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Abstract Parkinson′s disease (PD) is the second most common neurodegenerative disease after Alzheimer′s disease. At present, the main way to treat PD is still Levodopa therapy. However, long-term use of Levodopa can lead to a series of side effects, such as dyskinesia, decreased efficacy, "on-off" phenomena, end of dose phenomena, and soon. The catechol-O-methyltransferase (COMT) inhibitor can inhibit the metabolism of surrounding Levodopa and increase the transmission amount of Levodopa, so it is used in Levodopa additional therapy to enhance the efficacy of Levodopa. As a new third-generation COMT inhibitor, Opicapone can be used in Levodopa addition therapy to improve the motor fluctuations and end of dose phenomena. Opicapone has sustained activity in vivo for a long time. The current recommended dose is 50 mg per day taken orally before bedtime. The half-life of opicapone-induced COMT inhibitors is longer than that of the previous two generations of Opicapone inhibitors, and can significantly increase Levodopa systemic exposure, with more effective, safer and more lasting properties.
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