Abstract:
:Quetiapine (Seroquel, ICI 204,636) is an atypical antipsychotic that is effective in the treatment of both positive and negative symptoms of schizophrenia, and has a low propensity to cause extrapyramidal symptoms. The compound has a relatively short plasma elimination half-life (approximately 7 h). However, since dopamine D2 receptor occupancies correlate poorly with plasma concentrations of antipsychotics, plasma elimination half-life may not predict either duration of clinical effect or dosing frequency. Accordingly, the efficacy and tolerability of three dosing regimens (450 mg/day given in two or three divided doses daily, and 50 mg/day given twice daily) were compared in a 6-week, double-blind, randomized, multicentre, parallel-group study. The study recruited hospitalized men and women aged 18-65 years meeting DSM-IIIR criteria for acute exacerbation of chronic or subchronic schizophrenia. Six hundred and eighteen patients were randomly assigned to treatment with quetiapine 150 mg tid (n = 209), 225 mg bd (n = 200), or a comparator dose of 25 mg bd (n = 209). At day 42, the last day of randomized treatment and the primary timepoint for efficacy, quetiapine 450 mg/day was more effective than 50 mg/day: 225 mg bd was consistently superior to 25 mg bd in all measures of efficacy (total BPRS, P = 0.006; CGI severity, CGI improvement and SANS, P < 0.03), and 150 mg tid was statistically significantly superior to 25 mg bd with respect to BPRS total score (P = 0.05). The 225 mg bd and 150 mg tid groups were not significantly different from each other with respect to any efficacy measure. Quetiapine was generally well tolerated. Extrapyramidal symptom (EPS) adverse events were generally rare, and occurred with similar frequencies in the two 450 mg/day groups. Quetiapine was not associated with sustained increases in plasma prolactin at any dose. These data support the atypical profile developed from preclinical studies and show that quetiapine is an effective, well tolerated antipsychotic that can be given twice daily.
journal_name
Psychopharmacology (Berl)journal_title
Psychopharmacologyauthors
King DJ,Link CG,Kowalcyk Bdoi
10.1007/s002130050603subject
Has Abstractpub_date
1998-05-01 00:00:00pages
139-46issue
2eissn
0033-3158issn
1432-2072journal_volume
137pub_type
临床试验,杂志文章,多中心研究,随机对照试验abstract:RATIONALE:Buprenorphine is an opioid agonist-antagonist under development in the United States as a sublingual medication for treatment of opioid dependence. Buprenorphine may be abused; therefore, tablets combining buprenorphine with naloxone have been developed with the intent of reducing the abuse risk in people phy...
journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章
doi:10.1007/s002130050066
更新日期:2000-03-01 00:00:00
abstract::The administration of trycyclic antidepressants followed by reserpine-like drugs elicits a pattern of stereotyped locomotor activity. Using desmethylimipramine (DMI) followed by tetrabenazine (TBZ), activity could be reliably elicited only in young rats, and only by using very high doses of TBZ. The latency of onset o...
journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00426790
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journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF00179198
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journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02244656
更新日期:1993-01-01 00:00:00
abstract:RATIONALE:Little is known about the smoking topography characteristics of heavy cannabis users. Such measures may be able to predict cannabis use-related outcomes and could be used to validate self-reported measures of cannabis use. OBJECTIVES:The current study was conducted to measure cannabis smoking topography char...
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pub_type: 临床试验,杂志文章
doi:10.1007/s00213-011-2480-4
更新日期:2012-03-01 00:00:00
abstract:RATIONALE:The characterization of self-administration (SA) under extended access conditions is necessary for the development of addiction models. OBJECTIVE:The purposes of this experiment were to investigate: (1) dose effects on the initiation of cocaine SA under extended access conditions; (2) predictable individual ...
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更新日期:2001-08-01 00:00:00
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pub_type: 杂志文章
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更新日期:1996-07-01 00:00:00
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pub_type: 杂志文章
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pub_type: 临床试验,杂志文章,随机对照试验
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abstract:RATIONALE:The efficacy of methadone for treating heroin dependence derives, in part, from suppression of opiate withdrawal and attenuation of the effects of heroin. OBJECTIVES:The purpose of this double-blind, within-subject, inpatient study was to determine whether larger doses of methadone, which are more effective ...
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journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1993-01-01 00:00:00
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pub_type: 杂志文章
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更新日期:2016-01-01 00:00:00
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journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02246450
更新日期:1996-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/BF02316862
更新日期:1991-01-01 00:00:00
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journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02244368
更新日期:1991-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1007/s00213-018-5096-0
更新日期:2019-02-01 00:00:00
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journal_title:Psychopharmacology
pub_type: 杂志文章
doi:10.1007/BF02247479
更新日期:1994-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:1990-01-01 00:00:00
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更新日期:2018-04-01 00:00:00
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更新日期:2001-01-01 00:00:00
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journal_title:Psychopharmacology
pub_type: 杂志文章,多中心研究,随机对照试验
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更新日期:2016-04-01 00:00:00
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更新日期:2002-05-01 00:00:00
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pub_type: 杂志文章
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更新日期:1980-01-01 00:00:00
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journal_title:Psychopharmacology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1998-11-01 00:00:00
abstract:RATIONALE:Second-generation antipsychotics are the first-line medications prescribed for schizophrenic patients; however, some of them, such as olanzapine and risperidone, may induce metabolic dysfunctions during short-term treatment. Metformin is an effective adjuvant that attenuates antipsychotic-induced metabolic dy...
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更新日期:2020-08-01 00:00:00
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更新日期:1984-01-01 00:00:00
abstract:RATIONALE:Non-contingent chronic nicotine exposure procedures have evolved rapidly in recent years, culminating in electronic nicotine delivery systems (ENDS or e-cigarettes) to deliver vaporized drugs to rodents in standard housing chambers. OBJECTIVES:The aim of the current work was to use ENDS to test concentration...
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更新日期:2020-03-01 00:00:00
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更新日期:2015-06-01 00:00:00
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journal_title:Psychopharmacology
pub_type: 杂志文章
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更新日期:1986-01-01 00:00:00
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