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1.
BMC Geriatr ; 24(1): 218, 2024 Mar 04.
Artigo em Inglês | MEDLINE | ID: mdl-38438996

RESUMO

BACKGROUND: Polypharmacy and the use of potentially inappropriate medications are common among nursing home residents and are associated with negative outcomes. Although deprescribing has been proposed as a way to curtail these problems, the best way to implement multidisciplinary comprehensive medication review and deprescribing and its real impact in specific high-risk populations, such as nursing home residents, is still unclear. This multicenter randomized controlled clinical trial aims to assess the effects of a multidisciplinary mediation management program on medication use and health problems. METHODS: A total of 1,672 residents aged ≥ 65 years from 22 nursing homes in South Korea who meet the targeted criteria, such as the use of ≥ 10 medications, are eligible to participate. The experimental group will receive a comprehensive medication review, deprescription, and multidisciplinary case conference with the help of platform. Outcomes will be measured at baseline, at the end of the intervention, as well as at 3, 6, 9, and 12 months after the end of the intervention. The primary endpoints will be the rate of adverse drug events, number of potentially inappropriate medications/potentially inappropriate medication users/two or more central nervous system drug/ central nervous system drug users, delirium, emergency department visits, hospitalization, and falls. The secondary endpoint will be the number of medications taken and polypharmacy users. DISCUSSION: Our trial design is unique in that it aims to introduce a structured operationalized clinical program focused on reducing polypharmacy and potentially inappropriate medications in a nursing home setting with large samples. TRIAL REGISTRATION: Ethical approval was granted by the public institutional review board of the Ministry of Health and Welfare (2022-1092-009). The study is also registered with the Clinical Research Information Service (Identifier: KCT0008157, Development and evaluation of a multidisciplinary medication management program in long-term care facility residents Status: Approved First Submitted Date: 2023/01/18 Registered Date: 2023/02/03 Last Updated Date: 2023/01/18 (nih.go.kr) https://cris.nih.go.kr/ ), which includes all items from the World Health Organization Trial Registration Dataset.


Assuntos
Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Conduta do Tratamento Medicamentoso , Humanos , Casas de Saúde , Instituições de Cuidados Especializados de Enfermagem , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/epidemiologia , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos/prevenção & controle , Fármacos do Sistema Nervoso Central , Ensaios Clínicos Controlados Aleatórios como Assunto , Estudos Multicêntricos como Assunto
2.
J Pharm Biomed Anal ; 243: 116100, 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38513500

RESUMO

In 2019, the Italian National Institute of Health established an external quality assessment (EQA) program to evaluate the performance of laboratories of collaborative centres participating in the National Early Warning System in hair testing for classical and new psychoactive substances (NPS). The results obtained in the four rounds (2019-2023) and the evolution in hair testing performance for classic drugs of abuse and new psychoactive substances are presented. A total of 11 hair specimens, including 3 blank samples, were prepared by adding different classes of classical and NPS at known concentrations to pre-screened drug-free hair. False negative and false positive results were calculated for the qualitative data evaluation. The quantitative evaluation included the imprecision (as % coefficient of variation, CV%) and the accuracy (as % error, ERR%) of the results with respect to a mean value obtained by reference laboratories and Z-score values were assessed. Over the years, an improvement in false negative results (from 52.4% in the first year to 34.3% in the last one) and false positive results (from 55.0% in the first year to 30.8.% in the last one) was observed. In the first round, the mean ERR% ranged from 6.2% to 112.8% due to NPS determination. However, in the subsequent three rounds, the mean ERR% ranged from 10.4% to 22.4%, The mean CV% in the four rounds was approximately 41.5% (ranging from 44.3% to 53.3%). Between 12.0% and 56.6% of the reported results in all rounds should be considered satisfactory. EQA programs help laboratories to identify and correct problems within their processes by highlighting errors and variations. This ensures that the results produced are accurate and reproducible.


Assuntos
Fármacos do Sistema Nervoso Central , Cabelo , Itália
3.
J Pharm Biomed Anal ; 243: 116084, 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38452420

RESUMO

In 2019, Italian National Institute of Health established an external quality assessment program (EQA) to evaluate the performance of oral fluid testing for classical and new psychoactive substances by laboratories participating in the National Early Warning System collaborative centres. This report presents the results of four rounds between 2019 and 2023. Eleven oral fluid specimens, including 3 blank samples, were prepared by adding different classes of and new psychoactive drugs at known concentrations to pre-screened drug-free oral fluid. False-negative and false-positive results were calculated for the qualitative data evaluation. The quantitative evaluation measured the imprecision and accuracy of the results, in terms of coefficient of variation (CV%) and percent error (ERR%), respectively, with respect to a mean value obtained by reference laboratories. Z-score values were then calculated. Over the years, there has been a significant improvement in false-negative results (from 42.7% in the first year to 19.4% in the last year), but not in false-positive results (from 33.3% in the first year to 22.2% in the last one). In addition to the classic drugs of abuse (e.g. cocaine, amphetamine, methadone), the substances found in false positive samples belonged to the class of synthetic cannabinoids (e.g 5-fluoro CUMYL-PINACA and 5-fluoro-EDMB-PICA), synthetic opioids (e.g butyrylfentanyl) and tryptamines (e.g. 5-methoxy-N-methyl-N-isopropyltryptamine). The four rounds yielded a mean ERR% of approximately 22.1% and a mean CV% of around 41.5%. The participating laboratories demonstrated variable performances in relation to the class of analysed psychoactive substances, as evidenced by the calculated Z-scores. Between 25% and 60% of the reported results in all rounds should be considered satisfactory. EQA is a crucial element of laboratory quality management systems. It promotes continuous improvement and maintains high standards in the field of forensic and clinical drug testing.


Assuntos
Canabinoides , Cocaína , Fármacos do Sistema Nervoso Central , Itália , Cocaína/análise , Canabinoides/análise , Triptaminas
4.
Sci Total Environ ; 926: 171788, 2024 May 20.
Artigo em Inglês | MEDLINE | ID: mdl-38499097

RESUMO

Psychoactive substances (PSs) represent a subset of emerging contaminants. Their widespread production and utilization contribute to a growing ecological burden and risk on a global scale. Conventional wastewater treatment methods have proven insufficient in adequately removing psychoactive substances, leading to their occurrence in surface water ecosystems worldwide. As of present, however, a thorough understanding of their geographical prevalence and distribution patterns remains elusive. Further, in the existing literature, there is a scarcity of comprehensive overviews that systematically summarize the toxicity of various psychoactive substances towards aquatic organisms. Through summarizing almost 140 articles, the present study provides an overview of the sources, pollution status, and biotoxicity of psychoactive substances in surface waters, as well as an assessment of their ecological risks. Concentrations of several psychoactive substances in surface waters were found to be as high as hundreds or even thousands of ng·L-1. In parallel, accumulation of psychoactive substances in the tissues or organs of aquatic organisms was found to potentially cause certain adverse effects, including behavioral disorders, organ damage, and DNA changes. Oxidative stress was found to be a significant factor in the toxic effects of psychoactive substances on organisms. The application of the risk quotient approach indicated that psychoactive substances posed a medium to high risk in certain surface water bodies, as well as the need for sustained long-term attention and management strategies.


Assuntos
Ecossistema , Poluentes Químicos da Água , Poluentes Químicos da Água/toxicidade , Poluentes Químicos da Água/análise , Fármacos do Sistema Nervoso Central , Águas Residuárias , Água , Monitoramento Ambiental/métodos , Medição de Risco
5.
Bioorg Med Chem Lett ; 101: 129654, 2024 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-38360418

RESUMO

The use of privileged scaffolds in medicinal chemistry is an effective way to accelerate the drug discovery process, especially at the hit/lead optimization stage. 2-Phenylcyclopropylmethylamine (PCPMA) is a less commonly used chemical scaffold in medicinal chemistry, but many PCPMA-containing compounds exert therapeutic effects for various diseases, in particular central nervous system (CNS) diseases such as depression, schizophrenia, sleep disorder, and Parkinson's disease. The backbone of the PCPMA scaffold enables a unique structure of an amino group linked to a benzene ring through an alkyl linker, making it a useful template for the design of bioactive compounds especially for CNS drug targets including aminergic GPCRs and transporters. This review summarizes the medicinal chemistry studies of PCPMA-containing drugs and drug-like molecules, their mechanisms of action, and biological activities. We conclude that PCPMA is a unique and useful privileged scaffold for CNS drug design.


Assuntos
Fármacos do Sistema Nervoso Central , Descoberta de Drogas , Proteínas de Membrana Transportadoras , Química Farmacêutica , Desenho de Fármacos
6.
Expert Opin Drug Deliv ; 21(1): 71-89, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38217410

RESUMO

INTRODUCTION: Successful neuropharmacology requires optimization of CNS drug delivery and, by extension, free drug concentrations at brain molecular targets. Detailed assessment of blood-brain barrier (BBB) physiological characteristics is necessary to achieve this goal. The 'next frontier' in CNS drug delivery is targeting BBB uptake transporters, an approach that requires evaluation of brain endothelial cell transport processes so that effective drug accumulation and improved therapeutic efficacy can occur. AREAS COVERED: BBB permeability of drugs is governed by tight junction protein complexes (i.e., physical barrier) and transporters/enzymes (i.e., biochemical barrier). For most therapeutics, a component of blood-to-brain transport involves passive transcellular diffusion. Small molecule drugs that do not possess acceptable physicochemical characteristics for passive permeability may utilize putative membrane transporters for CNS uptake. While both uptake and efflux transport mechanisms are expressed at the brain microvascular endothelium, uptake transporters can be targeted for optimization of brain drug delivery and improved treatment of neurological disease states. EXPERT OPINION: Uptake transporters represent a unique opportunity to optimize brain drug delivery by leveraging the endogenous biology of the BBB. A rigorous understanding of these transporters is required to improve translation from the bench to clinical trials and stimulate the development of new treatment paradigms for neurological diseases.


Assuntos
Barreira Hematoencefálica , Encéfalo , Barreira Hematoencefálica/metabolismo , Encéfalo/metabolismo , Proteínas de Membrana Transportadoras/metabolismo , Transporte Biológico/fisiologia , Preparações Farmacêuticas/metabolismo , Fármacos do Sistema Nervoso Central
7.
N Engl J Med ; 390(5): 421-431, 2024 Feb 01.
Artigo em Inglês | MEDLINE | ID: mdl-38294974

RESUMO

BACKGROUND: Niemann-Pick disease type C is a rare lysosomal storage disorder. We evaluated the safety and efficacy of N-acetyl-l-leucine (NALL), an agent that potentially ameliorates lysosomal and metabolic dysfunction, for the treatment of Niemann-Pick disease type C. METHODS: In this double-blind, placebo-controlled, crossover trial, we randomly assigned patients 4 years of age or older with genetically confirmed Niemann-Pick disease type C in a 1:1 ratio to receive NALL for 12 weeks, followed by placebo for 12 weeks, or to receive placebo for 12 weeks, followed by NALL for 12 weeks. NALL or matching placebo was administered orally two to three times per day, with patients 4 to 12 years of age receiving weight-based doses (2 to 4 g per day) and those 13 years of age or older receiving a dose of 4 g per day. The primary end point was the total score on the Scale for the Assessment and Rating of Ataxia (SARA; range, 0 to 40, with lower scores indicating better neurologic status). Secondary end points included scores on the Clinical Global Impression of Improvement, the Spinocerebellar Ataxia Functional Index, and the Modified Disability Rating Scale. Crossover data from the two 12-week periods in each group were included in the comparisons of NALL with placebo. RESULTS: A total of 60 patients 5 to 67 years of age were enrolled. The mean baseline SARA total scores used in the primary analysis were 15.88 before receipt of the first dose of NALL (60 patients) and 15.68 before receipt of the first dose of placebo (59 patients; 1 patient never received placebo). The mean (±SD) change from baseline in the SARA total score was -1.97±2.43 points after 12 weeks of receiving NALL and -0.60±2.39 points after 12 weeks of receiving placebo (least-squares mean difference, -1.28 points; 95% confidence interval, -1.91 to -0.65; P<0.001). The results for the secondary end points were generally supportive of the findings in the primary analysis, but these were not adjusted for multiple comparisons. The incidence of adverse events was similar with NALL and placebo, and no treatment-related serious adverse events occurred. CONCLUSIONS: Among patients with Niemann-Pick disease type C, treatment with NALL for 12 weeks led to better neurologic status than placebo. A longer period is needed to determine the long-term effects of this agent in patients with Niemann-Pick disease type C. (Funded by IntraBio; ClinicalTrials.gov number, NCT05163288; EudraCT number, 2021-005356-10.).


Assuntos
Fármacos do Sistema Nervoso Central , Doença de Niemann-Pick Tipo C , Humanos , Coleta de Dados , Método Duplo-Cego , Leucina/análogos & derivados , Leucina/uso terapêutico , Doença de Niemann-Pick Tipo C/complicações , Doença de Niemann-Pick Tipo C/diagnóstico , Doença de Niemann-Pick Tipo C/tratamento farmacológico , Doença de Niemann-Pick Tipo C/genética , Resultado do Tratamento , Estudos Cross-Over , Pré-Escolar , Criança , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Fármacos do Sistema Nervoso Central/administração & dosagem , Fármacos do Sistema Nervoso Central/uso terapêutico
9.
ACS Chem Neurosci ; 15(3): 394-399, 2024 Feb 07.
Artigo em Inglês | MEDLINE | ID: mdl-38237559

RESUMO

The discovery and development of drugs to treat diseases of the nervous system remains challenging. There is a higher attrition rate in the clinical stage for nervous system experimental drugs compared to other disease areas. In the preclinical stage, additional challenges arise from the considerable effort required to find molecules that penetrate the blood-brain barrier (BBB) coupled with the poor predictive value of many preclinical models of nervous system diseases. In the era of target-based drug discovery, the critical first step of drug discovery projects is the selection of a therapeutic target which is largely driven by its presumed pathogenic involvement. For nervous system diseases, however, the feasibility of identifying potent molecules within the stringent range of molecular properties necessary for BBB penetration should represent another important factor in target selection. To address the latter, the present review analyzes the distribution of human protein targets of FDA-approved drugs for nervous system disorders and compares it with drugs for other disease areas. We observed a substantial difference in the distribution of therapeutic targets across the two clusters. We expanded on this finding by analyzing the physicochemical properties of nervous and non-nervous system drugs in each target class by using the central nervous system multiparameter optimization (CNS MPO) algorithm. These data may serve as useful guidance in making more informed decisions when selecting therapeutic targets for nervous system disorders.


Assuntos
Doenças do Sistema Nervoso Central , Doenças do Sistema Nervoso , Humanos , Fármacos do Sistema Nervoso Central/química , Sistema Nervoso Central/metabolismo , Barreira Hematoencefálica/metabolismo , Descoberta de Drogas , Doenças do Sistema Nervoso/metabolismo , Doenças do Sistema Nervoso Central/tratamento farmacológico
10.
Int J Mol Sci ; 25(2)2024 Jan 11.
Artigo em Inglês | MEDLINE | ID: mdl-38255986

RESUMO

The accumulation of ginsenosides (triterpenic saponins) was determined in Panax quinquefolium hairy root cultures subjected to an elicitation process using carvacrol at 5, 10, 25, 50, 100, 250, and 500 µM concentrations during 24 and 72 h exposure. This study was the first one in which carvacrol was applied as an elicitor. The content of eight ginsenosides, Rb1, Rb2, Rb3, Rc, Rd, Rg1, Rg2, and Re, was determined using HPLC analysis. Moreover, the quantitative RT-PCR method was applied to assess the relative expression level of farnesyl diphosphate synthase, squalene synthase, and dammarenediol synthase genes in the studied cultures. The addition of carvacrol (100 µM) was an effective approach to increase the production of ginsenosides. The highest content and productivity of all detected saponins were, respectively, 20.01 mg∙g-1 d.w. and 5.74 mg∙L-1∙day-1 after 72 h elicitation. The production profile of individual metabolites in P. quinquefolium cultures changed under the influence of carvacrol. The biosynthesis of most examined protopanaxadiol derivatives was reduced under carvacrol treatment. In contrast, the levels of ginsenosides belonging to the Rg group increased. The strongest effect of carvacrol was noticed for Re metabolites, achieving a 7.72-fold increase in comparison to the control. Saponin Rg2, not detected in untreated samples, was accumulated after carvacrol stimulation, reaching its maximum concentration after 72 h exposure to 10 µM elicitor.


Assuntos
Ginsenosídeos , Panax , Saponinas , Panax/genética , Saponinas/farmacologia , Cimenos , Fármacos do Sistema Nervoso Central
11.
Eur J Pharm Sci ; 192: 106623, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-37890640

RESUMO

Central nervous system (CNS) diseases are among the major health problems. However, blood-brain barrier (BBB) makes traditional oral and intravenous delivery of CNS drugs inefficient. The unique direct connection between the nose and the brain makes nasal administration a great potential advantage in CNS drugs delivery. However, nasal mucociliary clearance (NMCC) limits the development of drug delivery systems. Appropriate nasal gel viscosity alleviates NMCC to a certain extent, gels based on gellan gum, chitosan, carbomer, cellulose and poloxamer have been widely reported. However, nasal gel formulation design and key properties for alleviating NMCC have not been clearly discussed. This article summarizes gel formulations of different polymers in existing nasal gel systems, and attempts to provide a basis for researchers to conduct in-depth research on the key characteristics of gel matrix against NMCC.


Assuntos
Sistemas de Liberação de Medicamentos , Mucosa Nasal , Administração Intranasal , Encéfalo , Fármacos do Sistema Nervoso Central , Géis
12.
Expert Opin Drug Discov ; 19(2): 173-187, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37850233

RESUMO

INTRODUCTION: Introduced about 50 years ago, the model of Xenopus oocytes for the expression of recombinant proteins has gained a broad spectrum of applications. The authors herein review the benefits brought from using this model system, with a focus on modeling neurological disease mechanisms and application to drug discovery. AREAS COVERED: Using multiple examples spanning from ligand gated ion channels to transporters, this review presents, in the light of the latest publications, the benefits offered from using Xenopus oocytes. Studies range from the characterization of gene mutations to the discovery of novel treatments for disorders of the central nervous system (CNS). EXPERT OPINION: Development of new drugs targeting CNS disorders has been marked by failures in the translation from preclinical to clinical studies. As progress in genetics and molecular biology highlights large functional differences arising from a single to a few amino acid exchanges, the need for drug screening and functional testing against human proteins is increasing. The use of Xenopus oocytes to enable precise modeling and characterization of clinically relevant genetic variants constitutes a powerful model system that can be used to inform various aspects of CNS drug discovery and development.


Assuntos
Doenças do Sistema Nervoso Central , Receptores Nicotínicos , Animais , Humanos , Xenopus laevis , Oócitos , Fármacos do Sistema Nervoso Central , Descoberta de Drogas , Receptores Nicotínicos/metabolismo
13.
Stroke ; 55(1): 190-202, 2024 01.
Artigo em Inglês | MEDLINE | ID: mdl-38134249

RESUMO

Drug development for ischemic stroke is challenging as evidenced by the paucity of therapeutics that have advanced beyond a phase III trial. There are many reasons for this lack of clinical translation including factors related to the experimental design of preclinical studies. Often overlooked in therapeutic development for ischemic stroke is the requirement of effective drug delivery to the brain, which is critical for neuroprotective efficacy of several small and large molecule drugs. Advancing central nervous system drug delivery technologies implies a need for detailed comprehension of the blood-brain barrier (BBB) and neurovascular unit. Such knowledge will permit the innate biology of the BBB/neurovascular unit to be leveraged for improved bench-to-bedside translation of novel stroke therapeutics. In this review, we will highlight key aspects of BBB/neurovascular unit pathophysiology and describe state-of-the-art approaches for optimization of central nervous system drug delivery (ie, passive diffusion, mechanical opening of the BBB, liposomes/nanoparticles, transcytosis, intranasal drug administration). Additionally, we will discuss how endogenous BBB transporters represent the next frontier of drug delivery strategies for stroke. Overall, this review will provide cutting edge perspective on how central nervous system drug delivery must be considered for the advancement of new stroke drugs toward human trials.


Assuntos
AVC Isquêmico , Acidente Vascular Cerebral , Humanos , Sistemas de Liberação de Medicamentos , Acidente Vascular Cerebral/tratamento farmacológico , Fármacos do Sistema Nervoso Central/farmacologia , Barreira Hematoencefálica
14.
Behav Brain Res ; 460: 114816, 2024 Mar 05.
Artigo em Inglês | MEDLINE | ID: mdl-38122902

RESUMO

BACKGROUND: The dopaminergic (DA) system is an important neural system for the modulation of time perception and the timing of motor actions. Dysregulation of the DA system is related to chronic use of stimulant drugs, which lead, among others, to executive dysfunctions. Little is known instead about the potential deficiencies in temporal processing of stimulant-dependent individuals. The present study aimed to investigate temporal processing using a time bisection task with different temporal intervals in chronic cocaine users undergoing repetitive transcranial magnetic stimulation (rTMS). METHOD: Study 1: A time bisection task with short temporal intervals range (480/1920 ms) was administered to 18 cocaine use disorder (CocUD) patients and 20 healthy control before and after the intensive phase of rTMS treatment (5 days apart). Study 2: 22 CocUD participants and 23 control participants completed two temporal tasks (time bisection and time reproduction) with long temporal intervals range (1200/2640 ms) at baseline and immediately after the intensive phase of rTMS treatment. RESULTS: Study 1: A shift in the psychometric function consistent with temporal overestimation in CocUD patients compared to controls was observed. However, no temporal impairment in CocUD patients at test session was found. Study 2: The analysis of temporal variability indices showed a significant difference between groups at baseline but not at Day 5 due to a significant difference between time points only in the CocUD group. CONCLUSIONS: This study report a temporal overestimation in CocUD patients and a temporal variability reduction after an rTMS protocol in CocUD patients.


Assuntos
Cocaína , Percepção do Tempo , Humanos , Estimulação Magnética Transcraniana/métodos , Percepção do Tempo/fisiologia , Lobo Temporal , Córtex Pré-Frontal/fisiologia , Fármacos do Sistema Nervoso Central
15.
Eur J Pharmacol ; 961: 176161, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-37939990

RESUMO

A decline in microglia in the dentate gyrus of the hippocampus has recently been described as an important mechanism for the progression of depression. Reversal of this decline by innate immune system stimulants may represent a novel strategy to ameliorate the depressive phenotype in chronically stressed animals. ß-glucan is a polysaccharide from Saccharomyces cerevisiae. It can efficiently stimulate microglia without inducing the production of pro-inflammatory cytokines. Therefore, ß-glucan could be an ideal drug to ameliorate depressive phenotypes. In the present study, we found that a single injection of ß-glucan reversed depression-like behaviors in mice induced by chronic unpredictable stress (CUS) in a dose-dependent manner, which was accompanied by a reversal of the CUS-induced decrease in brain-derived neurotrophic factor (BDNF) protein levels in the dentate gyrus. The crucial role of BDNF signaling in the antidepressant effect of ß-glucan was demonstrated by experiments showing that infusion of an anti-BDNF antibody into dentate gyrus, construction of BDNF-Val68Met allele knock-in mice, or treatment with the BDNF receptor antagonist K252a abolished the antidepressant effect of ß-glucan. The increased BDNF signaling induced by ß-glucan was mediated by extracellular signal-regulated kinase1/2 (ERK1/2)-mediated BDNF synthesis, and inhibition of ERK1/2 by SL327 was able to abolish the antidepressant effect of ß-glucan. Moreover, inhibition or depletion of microglia by minocycline or PLX3397 abolished the reversal effect of ß-glucan on CUS-induced depression-like behaviors and CUS-induced impairment of ERK1/2-BDNF signaling. These results suggest that ß-glucan exhibits antidepressant effects by stimulating microglia-mediated activation of ERK1/2 and synthesis of BDNF in the hippocampus.


Assuntos
Fator Neurotrófico Derivado do Encéfalo , Sistema de Sinalização das MAP Quinases , Camundongos , Animais , Fator Neurotrófico Derivado do Encéfalo/metabolismo , Antidepressivos/farmacologia , Antidepressivos/uso terapêutico , Antidepressivos/metabolismo , Hipocampo , Fármacos do Sistema Nervoso Central/farmacologia , Depressão/tratamento farmacológico , Depressão/metabolismo , Estresse Psicológico/metabolismo , Modelos Animais de Doenças
16.
Expert Opin Drug Deliv ; 20(12): 1789-1800, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38007619

RESUMO

INTRODUCTION: Numerous therapeutics for neurological diseases have been developed, but many have failed in clinical trials in part due to limited brain bioavailability, mainly stemming from inefficient transport through the blood-brain barrier (BBB). One potential approach to noninvasive, BBB-targeted drug delivery to the brain is the use of engineered antibodies as delivery vehicles that can transport conjugated drug cargo across the BBB and into the brain via receptor-mediated transcytosis (RMT). Effective development of these RMT targeting systems includes novel target discovery, along with antibody engineering and subsequent validation. AREAS COVERED: This review focuses on both known and emerging RMT systems, targeting antibody properties in relation to BBB trafficking, and antibody validation strategies. EXPERT OPINION: Clinical development of known RMT targeting systems and identification of novel BBB RMT targets will be complementary strategies for overcoming the BBB in central nervous system (CNS) disease treatment. The search for new RMT targets with higher brain specificity and enriched expression in the brain has given rise to some new targets which may offer unique benefits. It is our opinion that the expansion of BBB RMT system identification, along with targeting molecule engineering and validation strategies, will substantially contribute to the treatment of a wide range of neurological diseases.


Assuntos
Barreira Hematoencefálica , Doenças do Sistema Nervoso Central , Humanos , Barreira Hematoencefálica/metabolismo , Encéfalo/metabolismo , Transporte Biológico , Transcitose , Anticorpos , Fármacos do Sistema Nervoso Central , Sistemas de Liberação de Medicamentos
17.
J Anal Toxicol ; 47(8): 762-769, 2023 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-37930844

RESUMO

Flualprazolam and flubromazolam are synthetic benzodiazepines that have not been approved for use in humans. They are categorized as novel psychoactive substances (NPS), and have been increasingly encountered in forensic case work. This report examines information from cases analyzed for flualprazolam and flubromazolam between July 1 and December 31, 2021 to identify the prevalence, trends and demographic data associated with these novel drugs in Ontario, Canada. Flualprazolam was identified in blood, serum or liver in 395 death investigations, 108 impaired driving and five sexual assault cases. Among all case types, blood concentrations were determined in 123 individuals aged 19-66 years. In impaired driving and sexual assault cases, flualprazolam blood concentrations ranged from <1.3 to 227 ng/mL (median 11.0 ng/mL), whereas a range of 3-59 ng/mL (median 6.8 ng/mL) was reported in death investigations. Flubromazolam was identified in blood, serum or liver in 137 death investigations, 55 impaired driving and one sexual assault case. Blood concentrations ranged from <1.3 to 323 ng/mL in 65 individuals, aged 14-61 years. In impaired driving and sexual assault cases, flubromazolam blood concentrations ranged from <1.3 to 323 ng/mL (median 7.7 ng/mL), which overlapped with the range of 2-220 ng/mL (median 8.0 ng/mL) reported in death investigations. Other drugs were frequently detected with flualprazolam and flubromazolam with opioids identified in more than 89% of positive flualprazolam and flubromazolam cases. These results demonstrated the prevalence of flualprazolam and flubromazolam in Ontario, Canada. Trends showed that over the 6-month period, as the number of flubromazolam cases decreased, the incidences of flualprazolam increased. An overlap in concentrations of these drugs was observed in both death investigations and cases involving living individuals. These data provide valuable information for the scientific community regarding the use of these drugs in antemortem and postmortem casework.


Assuntos
Drogas Desenhadas , Humanos , Ontário , Prevalência , Detecção do Abuso de Substâncias/métodos , Benzodiazepinas , Fármacos do Sistema Nervoso Central
18.
J Addict Med ; 17(5): 580-586, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37788613

RESUMO

BACKGROUND: Hospitals struggle to engage patients with stimulant use disorders, and little is known about how to adapt evidence-based behavioral interventions, such as contingency management (CM), for hospital settings. Our study is the first step in informing the design of a hospital CM intervention. METHODS: We performed a qualitative study at a quaternary referral academic medical center in Portland, Oregon. We conducted semistructured qualitative interviews with CM experts, hospital staff, and hospitalized patients, eliciting input about hospital CM adaptations, anticipated challenges, and potential opportunities. We performed a reflexive thematic analysis at a semantic level and shared results for respondent validation. RESULTS: We interviewed 8 CM experts (researchers and clinicians), 5 hospital staff, and 8 patients. Participants felt CM could benefit hospitalized patients by supporting patient substance use disorder and physical health goals, especially by addressing the boredom, sadness, and loneliness of hospitalization. Participants emphasized that in-person interactions could improve patient-staff relationships by using "super positive" experiences to improve rapport. For successful hospital CM, participants emphasized CM core concepts and potential hospital adaptations, including identifying hospital-specific high-yield target behaviors, ensuring staff training, and using CM to support the hospital discharge transition. Participants also encouraged considering novel mobile app interventions, which may offer more flexibility in the hospital, recommending that such interventions include an in-person CM facilitator. CONCLUSIONS: Contingency management has potential to support hospitalized patients and improve patient and staff experience. Our findings can inform CM interventions for hospital systems seeking to expand access to CM and stimulant use disorder treatment.


Assuntos
Terapia Comportamental , Transtornos Relacionados ao Uso de Substâncias , Humanos , Terapia Comportamental/métodos , Transtornos Relacionados ao Uso de Substâncias/terapia , Hospitalização , Alta do Paciente , Pesquisa Qualitativa , Fármacos do Sistema Nervoso Central
20.
Sci Rep ; 13(1): 18634, 2023 10 30.
Artigo em Inglês | MEDLINE | ID: mdl-37903846

RESUMO

The global drug market has been significantly impacted by the emergence of new psychoactive substances, leading to challenges in creating effective legislative controls and their use within recreational drug consumption. This research explores the prevalence of new psychoactive substances and non-medicinal and medicinal compounds within a prison facility in Northern Ireland. Wastewater samples collected from seven different manholes within the prison were analysed for 37 target compounds including the two most found illicit substances: benzoylecgonine (primary metabolite of cocaine) and cannabis. Using solid phase extraction with Oasis HLB and liquid-chromatography-time-of-flight-mass spectrometry across a gradient of 9 min, our analysis revealed that benzoylecgonine was the sole compound consistently present in all collected samples. Following this finding, our target compound selection was broadened to encompass medicinal compounds and employing qualitative analysis we re-evaluated the samples and discovered the presence of buprenorphine, benzodiazepines, methadone, morphine, and codeine. Finally, the study explored the application of enzymatic beta-glucuronidase hydrolysis to the samples. This final phase yielded significant findings, indicating the presence of codeine and nordiazepam at higher peak intensities, thereby shedding light on the potential implications of this enzymatic process.


Assuntos
Cannabis , Cocaína , Alucinógenos , Poluentes Químicos da Água , Águas Residuárias , Irlanda do Norte/epidemiologia , Prisões , Fármacos do Sistema Nervoso Central , Codeína , Poluentes Químicos da Água/análise , Detecção do Abuso de Substâncias/métodos
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