Selective D1- and D2-dopamine Receptor Blockade Both Induces Akathisia in Humans--a PET Study with [11C]SCH 23390 and [11C]raclopride
Overview
Authors
Affiliations
Pharmacological effects were recorded and time course for receptor binding in brain was followed by positron emission tomography after IV injection of the selective D1-dopamine receptor antagonist SCH 23390 in four healthy subjects in doses of 310-810 micrograms. Akathisia, the syndrome of motor restlessness, appeared after the three highest doses. The akathisia was transient and occurred only when [11C]SCH 23390 binding in the basal ganglia was at a high level with a central D1-dopamine receptor occupancy of 45-59%. The D2-dopamine receptor antagonist [11C]raclopride was injected IV into 20 healthy subjects and 13 schizophrenic patients. Akathisia appeared in 14 healthy subjects and 7 patients and coincided with maximal [11C]raclopride binding in the basal ganglia. The findings for [11C]raclopride and [11C]SCH 23390 are the first demonstration of a relationship between time courses for radioligand binding in the human brain and simultaneously induced pharmacological effects.
D1-Dopamine Receptor Availability in First-Episode Neuroleptic Naive Psychosis Patients.
Stenkrona P, Matheson G, Halldin C, Cervenka S, Farde L Int J Neuropsychopharmacol. 2019; 22(7):415-425.
PMID: 30958880 PMC: 6600463. DOI: 10.1093/ijnp/pyz017.
Earley C, Uhl G, Clemens S, Ferre S Sleep Med. 2016; 31:71-77.
PMID: 27539027 PMC: 5191980. DOI: 10.1016/j.sleep.2016.06.003.
PET molecular imaging in stem cell therapy for neurological diseases.
Wang J, Tian M, Zhang H Eur J Nucl Med Mol Imaging. 2011; 38(10):1926-38.
PMID: 21698414 DOI: 10.1007/s00259-011-1860-7.
Antidepressant and Antipsychotic Drugs.
Krystal A Sleep Med Clin. 2011; 5(4):571-589.
PMID: 21499530 PMC: 3076958. DOI: 10.1016/j.jsmc.2010.08.010.
Talvik M, Nordstrom A, Larsen N, Jucaite A, Cervenka S, Halldin C Psychopharmacology (Berl). 2004; 175(2):148-53.
PMID: 15007534 DOI: 10.1007/s00213-004-1802-1.