REPORT FROM THE AMERICAN ACADEMY OF NEUROLOGY (AAN) 63RD ANNUAL MEETING, HONOLULU, HAWAII, APRIL 9-16, 2011 – Canadian researchers have conducted a meta-analysis of 11 trials (n=253) of N-methyl-D-aspartate (NMDA) antagonists for peak-dose levodopa-induced dyskinesias in Parkinson’s disease (AAN 2011; abstract P05.098). NMDA receptors are involved in dopamine-glutamate interactions.
The rationale for the use of anti-glutamatergic agents in levodopa-induced dyskinesias is that receptor structure and function are altered by dopamine depletion and pharmacological treatments (Hallett & Standaert. Pharmacol Ther 2004; 102: 155-174).