BL-1020, a novel antipsychotic candidate with GABA-enhancing effects: D(2) receptor occupancy study in humans. European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology [Eur Neuropsychopharmacol] Journal article | | Title | BL-1020, a novel antipsychotic candidate with GABA-enhancing effects: D(2) receptor occupancy study in humans. | | Author(s) | Appel L, Geffen Y, Heurling K, Eriksson C, Antoni G, Kapur S | | Institution | Uppsala Imanet AB, GE Healthcare, P.O. Box 967, Uppsala, Sweden. | | Source | Eur Neuropsychopharmacol 2009 Aug 28. | | Abstract | BL-1020 is a potentially novel antipsychotic, which comprises the typical antipsychotic perphenazine linked by an ester bound to gamma-aminobutyric acid (GABA), intending a simultaneous dopamine-2 (D(2)) receptor blockade and GABA facilitation in the brain. This positron emission tomography (PET) study, using [(11)C]raclopride, assessed the extent and duration of D(2) receptor occupancy (D(2) RO) and safety for single doses of BL-1020 in healthy male subjects. Overall, this study did not raise any safety concern. Single doses of 16-32 mg BL-1020 caused a dose dependent striatal D(2) RO. The 32 mg dose of BL-1020 resulted in an average D(2) RO of 44% at 4-6 h post dosing (pd), which declined to 33% at 24 h pd. Equimolar doses of BL-1020 and perphenazine resulted in similar D(2) RO at 24 h pd. Pharmacokinetic-pharmacodynamic analysis predicted that oral once daily administration of 32 mg BL-1020 would result in D(2) ROs ranging from 52 to 66% at a steady state. | | Language | ENG | | Pub Type(s) | JOURNAL ARTICLE
| | PubMed ID | 19717284 |
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