Clinical Trial of Dipyridamole in Schizophrenia

Summary

This is a 6-week, randomized, double blind, parallel groups designed, olanzapine-controlled trial of oral dipyridamole in symptomatic patients with a (DSM IV) diagnosis of schizophrenia, schizoaffective or schizophreniform disorder. This pilot study aims to provide preliminary estimates of whether the effect sizes of dipyridamole on positive symptoms, negative symptoms, and cognitive deficits differ between schizophrenia patients treated with dipyridamole, and schizophrenia patients treated with olanzapine. A total of 30 subjects will be recruited locally.

Timeline

Start

2001-05

Primary completion

2008-09

Completion

2011-09

Publications

• Results Akhondzadeh S, Shasavand E, Jamilian H, Shabestari O, Kamalipour A. Dipyridamole in the treatment of schizophrenia: adenosine-dopamine receptor interactions. J Clin Pharm Ther. 2000 Apr;25(2):131-7. doi: 10.1046/j.1365-2710.2000.00273.x.
• Results Dixon DA, Fenix LA, Kim DM, Raffa RB. Indirect modulation of dopamine D2 receptors as potential pharmacotherapy for schizophrenia: I. Adenosine agonists. Ann Pharmacother. 1999 Apr;33(4):480-8. doi: 10.1345/aph.18215.
• Results Ferre S. Adenosine-dopamine interactions in the ventral striatum. Implications for the treatment of schizophrenia. Psychopharmacology (Berl). 1997 Sep;133(2):107-20. doi: 10.1007/s002130050380.

Drugs

Indications