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描述 | Lurasidone (SM-13496) is an antagonist of both dopamine D2 and 5-HT7 with IC50s of 1.68 and 0.495 nM, respectively. Lurasidone (SM-13496) is also a partial agonist of 5-HT1A receptor with an IC50 of 6.75 nM. In vitro receptor binding experiments reveal that Lurasidone (SM-13496) demonstrates affinity for dopamine D2 and 5-HT2A receptors higher than other tested antipsychotics. Lurasidone (SM-13496) dose-dependently increases the ratio of DOPAC/dopamine in frontal cortex and striatum, but it shows a preferential effect on the frontal cortex compare with the striatum, especially at higher doses. Lurasidone (SM-13496) (ED50 values 2.3 to 5.0 mg/kg) shows a comparable potency with olanzapine (ED50 values 1.1 to 5.1 mg/kg), higher potency than clozapine (ED50 9.5 to 290 mg/kg), and slightly lower potency than haloperidol (ED50 values 0.44 to 1.7 mg/kg). Lurasidone (SM-13496) (1 to 10 mg/kg) dose-dependently inhibits conditioned avoidance response (CAR) in rats, and the ED50 values are 6.3 mg/kg. Lurasidone (SM-13496) dose-dependently inhibits tryptamine (TRY)-induced forepaw clonic seizure and p-chloroamphetamine (p-CAMP)-induced hyperthermia with ED50 values of 5.6 and 3.0 mg/kg, respectively. Lurasidone (SM-13496) (0.3 to 30 mg/kg) dose-dependently and significantly increases the number of shocks received by rats in the conflict test with MED of 10 mg/kg[1]. 80 mg/d lurasidone, an effective and tolerable dose for non-TRS (treatment-resistant schizophrenia) patients, was also effective in TRS patients but required longer duration of treatment[2]. In the ITT (intention-to-treat) (but not the mITT) population, treatment with lurasidone was associated with significant improvement in the PANSS (Positive and Negative Syndrome Scale) total score in patients with schizophrenia. Lurasidone was generally well tolerated with minimal impact on weight and metabolic parameters[3]. |
临床研究 | |||||
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NCT号 | 适应症或疾病 | 临床期 | 招募状态 | 预计完成时间 | 地点 |
NCT02181803 | Schizophrenia | Phase 1 | Completed | - | - |
NCT01431326 | - | Recruiting | February 2020 | - | |
NCT01364818 | - | Completed | - | United States, North Carolina ... 展开 >> University of North Carolina Chapel Hill Chapel Hill, North Carolina, United States, 27599 收起 << |
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1mg | 5mg | 10mg | |
1 mM 5 mM 10 mM |
2.03mL 0.41mL 0.20mL |
10.15mL 2.03mL 1.01mL |
20.30mL 4.06mL 2.03mL |
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