期刊
CURRENT OPINION IN NEUROLOGY
卷 16, 期 -, 页码 S3-S7出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/00019052-200312001-00002
关键词
dopamine agonists; levodopa; dyskinesia; dopamine receptors
Levodopa and the dopamine agonists are effective symptomatic treatments for Parkinson's disease, and all patients receive at least one of these agents during their illness. Long-term use of levodopa is commonly associated with motor complications such as dyskinesia, and both the dosing frequency and total daily dose of levodopa determine the rate of onset and severity. Dopamine agonists have gained popularity as first-line monotherapy in Parkinson's disease, as they effectively reverse motor deficits and reduce the risk of motor complications. Long-acting dopamine agonists providing continuous, rather than pulsatile, dopaminergic stimulation appear able to avoid dyskinesia induction. Current treatments act predominantly on D-2 receptors, but drugs acting on both the D-1 and D-2 receptor families may produce an additive motor response, although this remains to be proven in patients with Parkinson's disease. Most currently used dopamine agonists are selective for D-2-like receptors, with only pergolide and apomorphine potentially interacting with D-1 receptor populations.
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