Topic
Psychotropic drug
About: Psychotropic drug is a research topic. Over the lifetime, 2309 publications have been published within this topic receiving 54070 citations.
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TL;DR: Based on experimental data, it can be shown that failure to include a placebo control condition in exploratory neuroendocrine challenge studies may result in both Type I and Type II errors of inference.
Abstract: Neuroendocrine challenge studies are frequently used to make inferences about the pathophysiology of psychiatric illness or about the effects of chronic psychotropic drug treatment on brain monoamine function. The outcome of these exploratory neuroendocrine tests, however, may be influenced by the effects of confounding variables, such as specific stress effects and variations in basal hormone levels. The inclusion of a placebo control condition minimizes the variability due to these variables. A number of recent neuroendocrine studies have omitted the placebo control condition. Based on experimental data, it can be shown that failure to include a placebo control condition may result in both Type I and Type II errors of inference. These results suggest a placebo control condition should be included in exploratory neuroendocrine challenge studies.
20 citations
TL;DR: The extensive use of drugs for off-label indications in children and adolescents suggests that prospective post-marketing studies should be carried out to evaluate efficacy and safety.
Abstract: Objective The aim of this study was to investigate the use of psychotropic medication in children and adolescents hospitalised in a psychiatric ward. Methods A prospective analysis of psychotropic drug prescriptions was conducted for all patients hospitalised in two acute psychiatric hospitalisation units of a paediatric teaching hospital in Paris, France. The study group consisted of 187 patients and was characterised in terms of age, sex, prior psychiatric hospitalisation and DSM-IV-Tr diagnosis. All prescriptions were assessed for off-label use. Results Overall, 46% of patients received at least one dose of psychotropic medication. Antipsychotic drugs were the most frequently prescribed drugs (44%), regardless of diagnosis. Ninety percent of patients who received antipsychotic drugs did not have psychosis. We found that 69% of the 421 prescriptions written were for off-label uses. The percentage distribution of off-label prescriptions by medication class was as follows: antipsychotic drugs, 90%; anxiolytics, 28%; stimulants, 26%; antidepressants, 89%; antiepileptic drugs, 89% and antiparkinsonian drugs, 91%. Conclusion The extensive use of drugs for off-label indications in children and adolescents suggests that prospective post-marketing studies should be carried out to evaluate efficacy and safety.
20 citations
TL;DR: In this paper, an LD50 QRAR model was developed for psychotropic drugs from their retention data in BMC, and the model's ability to predict new psychotropic drug toxicity was statistically proved.
Abstract: The LD50 determination is the main way to measure the acute toxicity of all types of substances. At the present time, however, there is increasing opposition to the use of living animals in research and testing activities from animal rights groups as well as some scientists. Nevertheless, the need to have a tool for estimating the potential toxicity of new compounds for human consumption has encouraged the development of alternative methods. Under adequate conditions, the partitioning in micellar liquid chromatography can describe the drug biopartitioning. We have named this chromatographic system biopartitioning micellar chromatography (BMC). In this paper, an LD50 QRAR model developed for psychotropic drugs from their retention data in BMC, is described. The model's ability to predict new psychotropic drug toxicity is statistically proved.
20 citations
TL;DR: The T allele of the ABCB1 C3435T genotype should be considered in future diagnostic development efforts for RIS-associated QT, as it prolongs the QTc interval and may cause fatal arrhythmia.
Abstract: Risperidone (RIS) is a frequently used efficacious psychotropic drug. However, it prolongs the QTc interval and may cause fatal arrhythmia. Little is known on the determinants of this RIS side effect. RIS is metabolized by CYP2D6, and is subject to drug efflux by P-glycoprotein (P-gp) encoded by the ATP-binding cassette subfamily B member 1 (ABCB1) gene. P-gp removes both RIS and its metabolite 9-OH-RIS from cardiac tissue. To investigate the effect of RIS metabolism and ABCB1 gene polymorphisms on QTc, steady-state plasma RIS and 9-OH-RIS levels, and QTc were measured. CYP2D6, ABCB1 C3435T and G2677T/A genotypes were determined in 66 schizophrenia patients on RIS. QTc was significantly longer in patients with ABCB1 3435CT+3435 TT than in those with 3435CC (P=0.006). ABCB1 G2677T/A genotype did not affect QTc. Multiple regression analysis showed that C/T or T/T genotypes at the ABCB1 C3435T locus, lower weight, and older age prolonged QTc. In summary, the T allele of the ABCB1 C3435T genotype should be considered in future diagnostic development efforts for RIS-associated QT.
20 citations
TL;DR: Para-methoxymethamphetamine treatment resulted in phosphorylation of protein kinase Cδ (PKCδ) and subsequent mitochondrial translocation of cleaved PKCδ, which mediates PMMA-induced neurotoxicity by facilitating oxidative stress, mitochondrial dysfunction, microglial activation, and pro-apoptotic signaling.
20 citations