Dopaminergic Effects on Cortical Function in Tourette's (Levodopa Protocol)

Summary

Dr. Kevin J. Black at Washington University is conducting a study to learn whether we can use MRI scans to test dopamine function in the brain and to determine whether the brain performs memory tasks differently in Tourette Syndrome (TS). TS is a movement disorder characterized by vocal tics (sounds) and motor tics (movements). We will measure how and where brain activity changes using magnetic resonance imaging (MRI) scans during memory tasks and after taking levodopa. Levodopa is a drug commonly used for the treatment of Parkinson's disease (PD), a very different movement disorder.

Timeline

Start

2006-02

Primary completion

2010-10

Completion

2010-10

Publications

• Background Hershey T, Black KJ, Hartlein JM, Barch DM, Braver TS, Carl JL, Perlmutter JS. Cognitive-pharmacologic functional magnetic resonance imaging in tourette syndrome: a pilot study. Biol Psychiatry. 2004 May 1;55(9):916-25. doi: 10.1016/j.biopsych.2004.01.003.
• Background Black KJ, Carl JL, Hartlein JM, Warren SL, Hershey T, Perlmutter JS. Rapid intravenous loading of levodopa for human research: clinical results. J Neurosci Methods. 2003 Jul 15;127(1):19-29. doi: 10.1016/s0165-0270(03)00096-7.
• Results Campbell M, Koller J, Shipley E, Creech M, Hershey T, Black K. Dopaminergic modulation of working memory in Tourette's syndrome [abstract]. J Neuropsychiatry Clin Neurosci 20(2):232, 2008. http://neuro.psychiatryonline.org/article.aspx?articleid=103362
• Results Black KJ, Campbell MC, Koller JM, Schneider B, Hershey T. Dopaminergic modulation of working-memory-related cortical activity in Tourette syndrome. Annual meeting, Society for Neuroscience, Chicago, 20 Oct 2009. http://www.sfn.org/
• Results Siddiqi SH, Creech ML, Black KJ. Orthostatic stability with intravenous levodopa. PeerJ. 2015 Aug 27;3:e1198. doi: 10.7717/peerj.1198. eCollection 2015.

Drugs

Indications