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2.
Drug Alcohol Depend ; 205: 107642, 2019 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-31683245

RESUMO

BACKGROUND AND AIMS: Cannabis use is frequent among individuals with cocaine use disorder. Despite recent non-controlled studies advocating a therapeutic role of smoked cannabis, there is a paucity of evidence-based data on potential therapeutic and cognitive side-effects of this association. METHODS: We examined 63 cocaine-addicted subjects who used cannabis more than 50 times in lifetime (COC + CAN), 24 cocaine-addicted patients who use cannabis less than 50 times (COC), and 36 controls (CON). Participants were evaluated with an extensive battery of neurocognitive tests after two weeks of supervised detoxification in an inpatient treatment program. Patients were followed up in one, three, and six months after discharge. RESULTS: Both groups of patients performed worse than CON on working memory, processing speed, inhibitory control, mental flexibility, and decision making. COC + CAN performed worse than COC on speed processing, inhibitory control and sustained attention, while COC performed worse than COC + CAN on mental flexibility. Concomitant cannabis use did not decrease relapses to cocaine use after one, three and six months. Among COC + CAN, earlier cocaine and cannabis use, and impaired executive functioning were predictive of relapse on cocaine after six months. CONCLUSION: Our results did not support the recommendation of smoked cannabis as a safe therapeutic approach for cocaine-addicted patients due to significant negative cognitive side-effects and absence of efficacy. Further studies investigating frontal brain morphology, neuromaturation, and prescription of the non-psychoactive constituent of cannabis sativa cannabidiol among cocaine-addicted patients who use cannabis are warranted.


Assuntos
Cannabis/efeitos adversos , Transtornos Relacionados ao Uso de Cocaína/psicologia , Cocaína/farmacologia , Uso da Maconha/psicologia , Adulto , Analgésicos/farmacologia , Atenção/efeitos dos fármacos , Estudos de Casos e Controles , Tomada de Decisões , Feminino , Seguimentos , Alucinógenos/farmacologia , Humanos , Inibição Psicológica , Masculino , Uso da Maconha/efeitos adversos , Memória de Curto Prazo/efeitos dos fármacos , Testes Neuropsicológicos , Tempo de Reação/efeitos dos fármacos , Adulto Jovem
3.
Drug Alcohol Depend ; 197: 255-261, 2019 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-30875646

RESUMO

BACKGROUND: The severity of substance use disorder (SUD) is currently defined by the sum of DSM-5 criteria. However, little is known about the validity of this framework or the role of additional severity indicators in relapse prediction. This study aimed to investigate the relationship between DSM-5 criteria, neurocognitive functioning, substance use variables and cocaine relapse among inpatients with cocaine use disorder (CUD). METHODS: 128 adults aged between 18 and 45 years were evaluated; 68 (59 males, 9 females) had CUD and 60 (52 males, 8 females) were healthy controls. For the group with CUD, the use of other substances was not an exclusion criterion. Participants were tested using a battery of neurocognitive tests. Cocaine relapse was evaluated 3 months after discharge. RESULTS: Scores for attention span and working memory were worse in patients compared to controls. Earlier onset and duration of cocaine use were related to poorer inhibitory control and global executive functioning, respectively; recent use was related to worse performance in inhibitory control, attention span and working memory. More DSM-5 criteria at baseline were significantly associated with relapse. CONCLUSIONS: Recent cocaine use was the most predictive variable for neurocognitive impairments, while DSM-5 criteria predicted cocaine relapse at three months post treatment. The integration of neurocognitive measures, DSM-5 criteria and cocaine use variables in CUD diagnosis could improve severity differentiation. Longitudinal studies using additional biomarkers are needed to disentangle the different roles of severity indicators in relapse prediction and to achieve more individualized and effective treatment strategies for these patients.


Assuntos
Transtornos Relacionados ao Uso de Cocaína/psicologia , Transtornos Neurocognitivos/induzido quimicamente , Índice de Gravidade de Doença , Adolescente , Adulto , Atenção/efeitos dos fármacos , Estudos de Casos e Controles , Manual Diagnóstico e Estatístico de Transtornos Mentais , Função Executiva/efeitos dos fármacos , Feminino , Humanos , Estudos Longitudinais , Masculino , Memória de Curto Prazo/efeitos dos fármacos , Pessoa de Meia-Idade , Testes Neuropsicológicos , Estudos Prospectivos , Recidiva , Adulto Jovem
4.
Psychol Addict Behav ; 32(7): 812-820, 2018 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-30451520

RESUMO

Studies have evidenced more severe health consequences in individuals who smoked crack cocaine as compared to intranasal cocaine users. Differential neurocognitive deficits between the crack and intranasal cocaine-addicted patients, associated with prefrontal cortex functions, have never been tested using complex cognitive tasks in humans. In this study, we examined possible distinct neurocognitive deficits in 43 crack-addicted patients (CrD) compared with 36 intranasal cocaine-addicted patients (CD) and 32 controls. CrD and CD were evaluated after 2 weeks of supervised detoxification in two inpatient treatment programs. All the subjects were evaluated using an extensive battery of neurocognitive tasks, including the Trail Making Test, the Stroop Color-Word Test, the Digits Forward and Digits Backward tasks, the Controlled Oral Word Association Test, the Wechsler Adult Intelligence Scale, and the Frontal Assessment Battery. Differences in performance in the neurocognitive tests between the three groups were investigated controlling for age, IQ, psychiatric symptoms, and years of education. Both intranasal and crack users were impaired on a variety of cognitive measures relative to controls. Crack users performed worse than intranasal cocaine users in inhibitory control (p < .05) and general executive functioning (p < .01). Crack use seems to be more deleterious to neurocognitive functions associated with the prefrontal cortex. This may predispose crack-addicted patients to more severe negative clinical outcomes. (PsycINFO Database Record (c) 2018 APA, all rights reserved).


Assuntos
Transtornos Relacionados ao Uso de Cocaína/psicologia , Cocaína Crack/administração & dosagem , Função Executiva/fisiologia , Córtex Pré-Frontal/fisiopatologia , Adulto , Transtornos Relacionados ao Uso de Cocaína/fisiopatologia , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Adulto Jovem
5.
Drug Alcohol Rev ; 37(2): 273-281, 2018 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-28485092

RESUMO

INTRODUCTION AND AIMS: Given a scenario of intense discussion about the legal situation of cannabis users worldwide, this paper aims to investigate the role of cannabis within a drug use sequencing pattern. DESIGN AND METHODS: Data came from a representative sample of college students from 27 Brazilian capitals (n = 12 711). We analysed the patterns of transition from/to the first use of cannabis to/from the first use of alcohol, tobacco and seven other illegal drugs. Survival analysis methods were used to analyse age of onset data on all potential drug pairs. Drugs that were not specified as the target drug pair tested in each survival model were included as time-varying covariates in all models. RESULTS: We found significant transitions from alcohol [adjusted hazard ratio (aHR) = 1.41, 95% confidence interval (CI) 1.15-1.73, P < 0.001] and inhalants (aHR = 1.56, 95% CI 1.26-1.93, P < 0.001) to cannabis. Moreover, we found significant transitions from cannabis to alcohol (aHR = 2.40, 95% CI 1.47-3.91, P < 0.001), cocaine (aHR = 7.47, 95% CI = 4.26-13.09, P < 0.001), prescription opioids (aHR = 2.16, 95% CI 1.29-3.63, P < 0.01) and tranquilisers (aHR = 1.51, 95% CI 1.11-2.06, P < 0.01). DISCUSSION AND CONCLUSIONS: Overall, our findings point to a strategic role of cannabis within drug first use sequence pattern. We had an important and unexpected finding-the bi-directional relationship between alcohol and cannabis. In addition, the first use of cannabis still precedes the first use of cocaine and non-medical use of tranquilisers and prescription opioids. [Castaldelli-Maia JM, Nicastri S, Cerdá M, Kim JH, Oliveira LG, Andrade AG, Martins, SS. In-transition culture of experimentation with cannabis in Latin American college students: A new role within a potential drug use sequencing pattern. Drug Alcohol Rev 2017;00:000-000].


Assuntos
Alcoolismo , Drogas Ilícitas , Uso da Maconha , Brasil , Feminino , Humanos , Masculino , Estudantes , Universidades , Adulto Jovem
6.
Int Rev Psychiatry ; 29(3): 254-262, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28587553

RESUMO

In recent years, several studies have been focused on the comorbidity of psychiatric disorders with alcohol and other substance dependence. In this context, the Brazilian Association of Studies on Alcohol and Other Drugs initiated a project to establish Brazilian Guidelines. The aim of this study was to review diagnostic and therapeutic criteria for the most prevalent psychiatric comorbidities. Randomized clinical trials, epidemiological studies, animal testing and other forms of research are reviewed herein. The main psychiatric comorbidities are investigated and data published in the literature are reviewed, based on guidelines adopted by other countries. Epidemiological aspects, diagnostic criteria, integrated treatment and the organization of specialized service, as well as details regarding psychotherapy and pharmacological treatment are discussed. The guidelines of the Brazilian Association of Studies on Alcohol and Other Drugs reinforce the importance of adequate diagnosis and treatment regarding alcoholic and drug dependent patients suffering of comorbid psychiatric disorders.


Assuntos
Transtornos Relacionados ao Uso de Álcool , Transtornos Mentais , Guias de Prática Clínica como Assunto , Sociedades Científicas/normas , Transtornos Relacionados ao Uso de Substâncias , Transtornos Relacionados ao Uso de Álcool/diagnóstico , Transtornos Relacionados ao Uso de Álcool/epidemiologia , Transtornos Relacionados ao Uso de Álcool/terapia , Brasil , Comorbidade , Humanos , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Transtornos Mentais/terapia , Transtornos Relacionados ao Uso de Substâncias/diagnóstico , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/terapia
7.
Addict Behav ; 73: 41-47, 2017 10.
Artigo em Inglês | MEDLINE | ID: mdl-28475942

RESUMO

INTRODUCTION: Adolescence is a crucial period for neurodevelopment, but few studies have investigated the impact of early cocaine use on cognitive performance and patterns of substance use. METHODS: We evaluated 103 cocaine dependent inpatients divided in two groups: early-onset users (EOG; n=52), late-onset users (LOG; n=51), and 63 healthy controls. Neuropsychological functioning was evaluated using Digits Forward (DF) and Backward (DB), Trail Making Test (TMT), Stroop Color Word Test (SCWT), Controlled Oral Word Association Test (COWAT), Wisconsin Card Sorting Test (WCST), Rey Osterrieth Complex Figure Test (ROCFT), Frontal Assessment Battery (FAB), and Iowa Gambling Test (IGT). Use of alcohol and other drugs was assessed with the Addiction Severity Index (ASI-6). RESULTS: Analyses of covariance controlling for age, IQ and years of education showed that EOG presented worse performance in attention span (DF, p=0.020), working memory (DB, p=0.001), sustained attention (WCST, p=0.030), declarative memory (ROCFT, p=0.031) and general executive functioning (FAB, p=0.003) when compared with the control group. LOG presented impairments on divided attention (TMT, p=0.003) and general executive functioning (FAB, p=0.001) in relation to the control group. EOG presented higher use of cannabis and alcohol than LOG (p≤0.001). CONCLUSION: Early-onset cocaine users display more pronounced neuropsychological alterations than controls, as well as a greater frequency of polydrug consumption than LOG. The prominent cognitive deficits in EOG probably reflect the deleterious interference of cocaine use with early stages of neurodevelopment. This may be related to more severe clinical characteristics of substance disorder in this subgroup, including polysubstance abuse.


Assuntos
Transtornos Relacionados ao Uso de Cocaína/complicações , Transtornos Cognitivos/etiologia , Adolescente , Adulto , Idade de Início , Análise de Variância , Feminino , Humanos , Masculino , Testes Neuropsicológicos , Córtex Pré-Frontal/efeitos dos fármacos , Adulto Jovem
8.
J Ment Health ; 24(1): 9-14, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-25188583

RESUMO

BACKGROUND: There has been considerable debate regarding what typically occurs after experimentation with drugs throughout the life of young people who used various drugs. AIMS: To evaluate the clinical importance of the most common sequence for the first use of a drug by two models (the "gateway model" and the "alternative model", which is the most popular sequence for Brazilian university students according to a previous study) regarding the problematic use of alcohol, tobacco, cannabis and other illegal drugs, assessed by ASSIST. METHOD: People who had already experimented with three or more drugs across different stages of the two models were selected from a representative sample of university students from 27 Brazilian capitals (n = 12 711). FINDINGS: There were no differences regarding the problematic use of the most consumed drugs in Brazil (alcohol, tobacco and cannabis) between the models. Multiple drug seekers and violators had more problematic use of illegal drugs other than cannabis than individuals in the model sequence. However, in the case of violators, this was only evident in the alternative model. CONCLUSIONS: Multiple drug seekers and violators deserve special attention due to their increased risk of problematic use of other illegal drugs.


Assuntos
Usuários de Drogas/psicologia , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Adulto , Alcoolismo/epidemiologia , Feminino , Humanos , Masculino , Abuso de Maconha/epidemiologia , Análise de Regressão , Tabagismo/epidemiologia , Adulto Jovem
9.
Exp Clin Psychopharmacol ; 22(6): 530-40, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25150538

RESUMO

The present study investigated the role of first use of inhalants within a first drug sequencing pattern. In a representative sample of university students from 27 Brazilian capitals (n = 12,711), we analyzed the patterns of transition from/to first use of inhalants to/from the first use of alcohol, tobacco, cannabis, cocaine, hallucinogens, ecstasy, amphetamines, prescription opioids, and tranquilizers. Cox proportional hazards models were used to analyze data. Drugs that were not specified as the pair of drugs tested in each model were included as time-varying covariates in all models. In this sample, first use of inhalants was preceded only by the first use of alcohol and tobacco. However, first use of inhalants preceded first use of cannabis, amphetamines, cocaine, and tranquilizers. First use of inhalants preceded the first use of prescription opioids, and vice versa. This study highlights the need to intervene early with youths who are at risk of or just beginning to use inhalants, because this class of drugs seems to be the first illegal drug in Brazil to be experimented by respondents in our sample. There is also a call for attention to individuals who have already first used inhalants because of their higher chance to experiment with other drugs such as cannabis, cocaine, and prescription drugs. All these findings show an in-transition culture of drug use, which should be tracked through time, because some classical models (i.e., gateway model) might be outdated and might also not fit within different settings.


Assuntos
Comportamento de Procura de Droga , Abuso de Inalantes/epidemiologia , Modelos Psicológicos , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Adulto , Intoxicação Alcoólica/epidemiologia , Brasil/epidemiologia , Comorbidade , Estudos Transversais , Feminino , Inquéritos Epidemiológicos , Humanos , Masculino , Modelos de Riscos Proporcionais , Índice de Gravidade de Doença , Fumar/epidemiologia , Estudantes , Universidades , Saúde da População Urbana , Adulto Jovem
10.
Drug Alcohol Depend ; 141: 79-84, 2014 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-24913200

RESUMO

BACKGROUND: In cocaine-dependent individuals, executive function (EF) deficits are associated with poor treatment outcomes. Psychological interventions and pharmacological approaches have produced only modest effect sizes. To date, studies of this topic have been few and limited. The aim of this study was to examine the effects of a new model of intervention, which integrates chess and Motivational Interviewing, Motivational Chess (MC) METHODS: We evaluated 46 cocaine-dependent inpatients (aged 18-45), in two groups-MC (n=26); and active comparison-AC (n=20). Using neuropsychological tests and an impulsivity scale, we assessed the subjects before and after the study period (one month of abstinence monitored by urine toxicology screening). RESULTS: The MC and AC groups did not differ at baseline. In the post-intervention assessment (after one month), both groups showed significant improvements in attention, mental flexibility, inhibitory control, abstraction abilities, and decision-making (p<0.01). In addition, the improvement in working memory was more significant in the MC group than in the AC group (group-by-time interaction, p=01). CONCLUSIONS: One month of abstinence was sufficient to improve various attentional and executive domains in cocaine-dependent subjects. The MC intervention was associated with greater improvements in EFs, especially working memory, suggesting that tailored interventions focusing on complex EFs accelerate the process of cognitive recovery during the initial period of abstinence.


Assuntos
Transtornos Relacionados ao Uso de Cocaína/psicologia , Tomada de Decisões/fisiologia , Função Executiva/fisiologia , Entrevista Motivacional , Resolução de Problemas/fisiologia , Adulto , Atenção/fisiologia , Feminino , Humanos , Masculino , Memória de Curto Prazo/fisiologia , Testes Neuropsicológicos , Estudos Prospectivos
11.
Soc Psychiatry Psychiatr Epidemiol ; 49(3): 385-94, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-23918195

RESUMO

PURPOSE: The aim of the present study was to test whether the first use of an illicit drug increases the chance of first use of other illicit drugs. METHOD: The transitions from the first use of a drug to the first use of another drug were analyzed. Comparisons were made between first drug users and non-users. Survival analysis methods were used to compare the cumulative probability of second drug use after adjusting for socio-demographic covariates and the intermediate use of alcohol and/or tobacco. A total of 12,721 Brazilian university students participated in this study. RESULTS: Inhalants and marijuana were used prior to the use of several other drugs, whereas the opposite pattern was not found. Ecstasy was used before other drugs in several instances. Other well-examined drugs, such as amphetamines, cocaine and hallucinogens, were used both before and after other illicit drugs without any marked predominance for either of the two roles. CONCLUSIONS: This study supports the role of the use of marijuana and inhalants almost exclusively before the use of other illicit drugs, whereas the use of ecstasy has an opposite role. These roles could be linked to the prevalence of lifetime use and whether individuals were at an earlier or later age during experimentation.


Assuntos
Usuários de Drogas/estatística & dados numéricos , Drogas Ilícitas , Estudantes/estatística & dados numéricos , Universidades/estatística & dados numéricos , Adolescente , Brasil/epidemiologia , Feminino , Humanos , Masculino , Prevalência , Estudantes/psicologia , Adulto Jovem
12.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 35(4): 338-346, Oct-Dec. 2013. tab
Artigo em Inglês | LILACS | ID: lil-697338

RESUMO

Objective: To analyze the predictors of smoking cessation treatment outcomes in a sample with a high rate of medical and psychiatric disorders and addictions. Methods: Analysis of predictors of success of a 6-week treatment provided by an addiction care unit (CAPS-AD) to 367 smokers in Brazil from 2007 to 2010. Forty variables were collected at baseline. Success was defined as abstinence from smoking for a period of at least 14 consecutive days, including the last day of treatment. Twenty variables were selected for the logistic regression model. Results: The only condition correlated with successful treatment after logistic regression was smoking one's first cigarette 5 minutes or more after waking (beta = 1.85, 95% confidence interval [95%CI] = 1.11-3.10, p = 0.018). Subjects with hypertension and alcohol use disorders and those who were undergoing psychiatric treatment showed success rates comparable to or greater than the average success rate of the sample (34.2-44.4%). Conclusions: These findings support the importance of the variable time to first cigarette in treatment outcomes for a sample with a high rate of clinical and psychiatric disorders. Good success rates were observed for pharmacological treatment, which was combined with group therapy based on cognitive-behavioral concepts and integrated into ongoing treatment of other addictions and psychiatric disorders. .


Assuntos
Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Abandono do Hábito de Fumar/estatística & dados numéricos , Fumar/terapia , Tabagismo/terapia , Brasil/epidemiologia , Modelos Logísticos , Inquéritos e Questionários , Fatores Socioeconômicos , Tabagismo/epidemiologia , Resultado do Tratamento
13.
Front Psychiatry ; 4: 126, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24155725

RESUMO

BACKGROUND: Cocaine-dependent individuals (CDI) present executive cognitive function (ECF) deficits, but the impact of psychiatric comorbidities such as Attention-Deficit Hyperactivity Disorder (ADHD) on neuropsychological functioning is still poorly understood. The aim of this study was to investigate if CDI with ADHD (CDI + ADHD) would have a distinct pattern of executive functioning when compared with CDI without ADHD (CDI). METHODS: We evaluated 101 adults, including 69 cocaine-dependent subjects (divided in CDI and CDI + ADHD) and 32 controls. ECF domains were assessed with Digits Forward (DF), Digits Backward (DB), Stroop Color Word Test (SCWT), the Wisconsin Card Sorting Test (WCST), and the Frontal Assessment Battery (FAB). DSM-IV criteria for ADHD were used for diagnosis and previous ADHD symptoms (in the childhood) were retrospectively assessed by the Wender-Utah Rating Scale (WURS). RESULTS: There were no significant differences between CDI + ADHD, CDI, and controls in estimated intellectual quotient (IQ), socioeconomic background, education (in years), and pre-morbid IQ (p > 0.05). SCWT and WCST scores did not differ across groups (p > 0.05). Nevertheless, CDI and CDI + ADHD performed more poorly than controls in total score of the FAB (p < 0.05). Also, CDI + ADHD did worse than CDI on DF (F = 4.756, p = 0.011), DB (F = 8.037, p = 0.001), Conceptualization/FAB (F = 4.635, p = 0.012), and Mental flexibility/FAB (F = 3.678, p = 0.029). We did not find correlations between cocaine-use variables and neuropsychological functioning, but previous ADHD symptoms assessed by WURS were negatively associated with DF (p = 0.016) and with the total score of the FAB (p = 0.017). CONCLUSION: CDI + ADHD presented more pronounced executive alterations than CDI and CDI exhibited poorer cognitive functioning than controls. Pre-existing ADHD symptoms may have a significant negative impact on executive dysfunction in CDI. It remains to be investigated by future studies if symptoms such as impulsivity or a pre-existing ECF dysfunction could represent underlying cognitive endophenotypes that would substantially increase the risk for acquiring addictive disorders.

14.
CNS Drugs ; 27(11): 921-41, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-23853032

RESUMO

BACKGROUND: Nicotine dependence is difficult to treat, and the biological mechanisms that are involved are not entirely clear. There is an urgent need to develop better drugs and more effective treatments for clinical practice. A critical step towards accelerating progress in medication development is to understand the neurobehavioral effects of pharmacotherapies on clinical characteristics associated with nicotine dependence. OBJECTIVES: This review sought to summarize the functional magnetic resonance imaging (fMRI) literature on smoking cessation with the aim to better understand the neural processes underlying the effects of nicotinic and non-nicotinic pharmacological smoking cessation treatments on specific symptoms of nicotine dependence and withdrawal. DATA SOURCES: We conducted a search in Pubmed, Web of Science and PsycINFO databases with the keywords 'fMRI' or 'functional magnetic resonance imaging' and 'tobacco' or 'nicotine' or 'smok*'. The date of the most recent search was May 2012. STUDY ELIGIBILITY CRITERIA, PARTICIPANTS AND INTERVENTIONS: The original studies that were included were those of smokers or nicotine-dependent individuals, published in the English language, with pharmacological treatment for nicotine dependence and use of fMRI with blood oxygen level-dependent (BOLD) imaging or continuous arterial spin labelling (CASL). No date limit was applied. STUDY APPRAISAL AND SYNTHESIS METHODS: Two of the authors read the abstracts of all studies found in the search (n = 1,260). The inclusion and exclusion criteria were applied, and 1,224 articles were excluded. In a second step, the same authors read the remaining 36 studies. Nineteen of the 36 articles were excluded. The results were tabulated by the number of individuals and their mean age, the main sample characteristics, smoking status, study type and methodology, and the main fMRI findings. RESULTS: Seventeen original fMRI studies involving pharmacological treatment of smokers were selected. The anterior and posterior cingulate cortex, medial and lateral orbitofrontal cortex, ventral striatum, amygdala, thalamus and insula are heavily involved in the maintenance of smoking and nicotine withdrawal. The effects of varenicline and bupropion in alleviating withdrawal symptoms and decreasing smoking correlated with modulation of the activities of these areas. Nicotine replacement therapy seems to improve cognitive symptoms related to withdrawal especially by modulating activities of the default-network regions; however, nicotine replacement does not necessarily alter the activities of neural circuits, such as the cingulate cortices, that are associated with nicotine addiction. LIMITATIONS: The risk of bias in individual studies, and across studies, was not assessed, and no method of handling data and combining results of studies was carried out. Most importantly, positron emission tomography (PET) studies were not included in this review. CONCLUSIONS AND IMPLICATION OF KEY FINDINGS: fMRI studies delineate brain systems that contribute to cognitive deficits and reactivity to stimuli that generate the desire to smoke. Nicotinic and non-nicotinic pharmacotherapy may reduce smoking via distinct neural mechanisms of action. These findings should contribute to the development of new medications and discovery of early markers of the therapeutic response of cigarette smokers.


Assuntos
Encéfalo/fisiopatologia , Imageamento por Ressonância Magnética , Abandono do Hábito de Fumar/psicologia , Síndrome de Abstinência a Substâncias , Tabagismo/tratamento farmacológico , Descoberta de Drogas , Humanos , Ensaios Clínicos Controlados Aleatórios como Assunto , Síndrome de Abstinência a Substâncias/fisiopatologia , Síndrome de Abstinência a Substâncias/psicologia , Tabagismo/fisiopatologia , Tabagismo/psicologia
15.
Braz J Psychiatry ; 35(4): 338-46, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24402207

RESUMO

OBJECTIVE: To analyze the predictors of smoking cessation treatment outcomes in a sample with a high rate of medical and psychiatric disorders and addictions. METHODS: Analysis of predictors of success of a 6-week treatment provided by an addiction care unit (CAPS-AD) to 367 smokers in Brazil from 2007 to 2010. Forty variables were collected at baseline. Success was defined as abstinence from smoking for a period of at least 14 consecutive days, including the last day of treatment. Twenty variables were selected for the logistic regression model. RESULTS: The only condition correlated with successful treatment after logistic regression was smoking one's first cigarette 5 minutes or more after waking (beta = 1.85, 95% confidence interval [95%CI] = 1.11-3.10, p = 0.018). Subjects with hypertension and alcohol use disorders and those who were undergoing psychiatric treatment showed success rates comparable to or greater than the average success rate of the sample (34.2-44.4%). CONCLUSIONS: These findings support the importance of the variable time to first cigarette in treatment outcomes for a sample with a high rate of clinical and psychiatric disorders. Good success rates were observed for pharmacological treatment, which was combined with group therapy based on cognitive-behavioral concepts and integrated into ongoing treatment of other addictions and psychiatric disorders.


Assuntos
Abandono do Hábito de Fumar/estatística & dados numéricos , Fumar/terapia , Tabagismo/terapia , Brasil/epidemiologia , Feminino , Humanos , Modelos Logísticos , Masculino , Pessoa de Meia-Idade , Fatores Socioeconômicos , Inquéritos e Questionários , Tabagismo/epidemiologia , Resultado do Tratamento
16.
Am J Addict ; 20(1): 78-86, 2011.
Artigo em Inglês | MEDLINE | ID: mdl-21175924

RESUMO

Crack cocaine-dependent individuals (CCDI) present abnormalities in both social adjustment and decision making, but few studies have examined this association. This study investigated cognitive and social performance of 30 subjects (CCDI × controls); CCDI were abstinent for 2 weeks. We used the Social Adjustment Scale (SAS), Wisconsin Card Sorting Test (WCST), and Iowa Gambling Task (IGT). Disadvantageous choices on the IGT were associated with higher levels of social dysfunction in CCDI, suggesting the ecological validity of the IGT. Social dysfunction and decision making may be linked to the same underlying prefrontal dysfunction, but the nature of this association should be further investigated.


Assuntos
Transtornos Relacionados ao Uso de Cocaína/psicologia , Transtornos Cognitivos/psicologia , Cocaína Crack/efeitos adversos , Tomada de Decisões/efeitos dos fármacos , Ajustamento Social , Adulto , Transtornos Relacionados ao Uso de Cocaína/complicações , Transtornos Cognitivos/complicações , Jogo de Azar/psicologia , Humanos , Masculino , Testes Neuropsicológicos , Escalas de Graduação Psiquiátrica , Índice de Gravidade de Doença , Transtornos Relacionados ao Uso de Substâncias/complicações , Transtornos Relacionados ao Uso de Substâncias/psicologia
17.
Addict Behav ; 35(10): 875-81, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20584570

RESUMO

Substance-dependence is highly associated with executive cognitive function (ECF) impairments. However, considering that it is difficult to assess ECF clinically, the aim of the present study was to examine the feasibility of a brief neuropsychological tool (the Frontal Assessment Battery - FAB) to detect specific ECF impairments in a sample of substance-dependent individuals (SDI). Sixty-two subjects participated in this study. Thirty DSM-IV-diagnosed SDI, after 2weeks of abstinence, and 32 healthy individuals (control group) were evaluated with FAB and other ECF-related tasks: digits forward (DF), digits backward (DB), Stroop Color Word Test (SCWT), and Wisconsin Card Sorting Test (WCST). SDI did not differ from the control group on sociodemographic variables or IQ. However, SDI performed below the controls in DF, DB, and FAB. The SDI were cognitively impaired in 3 of the 6 cognitive domains assessed by the FAB: abstract reasoning, motor programming, and cognitive flexibility. The FAB correlated with DF, SCWT, and WCST. In addition, some neuropsychological measures were correlated with the amount of alcohol, cannabis, and cocaine use. In conclusion, SDI performed more poorly than the comparison group on the FAB and the FAB's results were associated with other ECF-related tasks. The results suggested a negative impact of alcohol, cannabis, and cocaine use on the ECF. The FAB may be useful in assisting professionals as an instrument to screen for ECF-related deficits in SDI.


Assuntos
Transtornos Cognitivos/etiologia , Função Executiva/fisiologia , Testes Neuropsicológicos , Córtex Pré-Frontal/fisiologia , Índice de Gravidade de Doença , Transtornos Relacionados ao Uso de Substâncias/complicações , Adulto , Consumo de Bebidas Alcoólicas/efeitos adversos , Alcoolismo/complicações , Estudos de Casos e Controles , Transtornos Relacionados ao Uso de Cocaína/complicações , Transtornos Cognitivos/fisiopatologia , Estudos de Viabilidade , Humanos , Masculino , Abuso de Maconha/complicações , Inquéritos e Questionários , Adulto Jovem
18.
Braz J Psychiatry ; 28(2): 142-8, 2006 Jun.
Artigo em Português | MEDLINE | ID: mdl-16810399

RESUMO

Recently, several studies have focused on comorbity psychiatric disorders with alcohol and other substance dependence. The Brazilian Association of Studies on Alcohol and Other Drugs proposed the Brazilian Guidelines project. This study review diagnostic and therapeutic criteria to the most prevalent psychiatric comorbidities. Randomized clinical trials, epidemiological, animal studies and other forms of research are reviewed. The main psychiatric comorbidities are studied based on guidelines adopted by other countries and the literature data resumed. Epidemiological aspects, diagnoses, integrated treatment and service organization, as well as specific psychotherapic and pharmacological treatment are discussed. The Brazilian Association of Studies on Alcohol and Other Drugs Guidelines reassures the importance of adequate diagnoses and treatment regarding alcoholic and drug dependent patients suffering of comorbid psychiatric disorders.


Assuntos
Transtornos Mentais , Sociedades Científicas , Transtornos Relacionados ao Uso de Substâncias , Brasil/epidemiologia , Comorbidade , Diagnóstico Duplo (Psiquiatria)/métodos , Humanos , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Transtornos Mentais/terapia , Transtornos Relacionados ao Uso de Substâncias/diagnóstico , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/terapia
19.
Braz. J. Psychiatry (São Paulo, 1999, Impr.) ; 28(2): 142-148, jun. 2006. ilus
Artigo em Português | LILACS | ID: lil-430292

RESUMO

O diagnóstico e tratamento de comorbidade psiquiátrica e dependência de álcool e outras substâncias tem sido objeto de inúmeros estudos nos últimos anos. A Associação Brasileira de Estudos do Alcool e Outras Drogas desenvolveu o projeto Diretrizes. Este trabalho visa o desenvolvimento de critérios diagnósticos e terapêuticos atualizados para as comorbidades psiquiátricas mais prevalentes. Ensaios clínicos randomizados, estudos epidemiológicos, com animais e outros estudos são revisados. As principais comorbidades psiquiátricas são estudadas e os dados de literatura resumidos, tendo como referência diretrizes adotadas em outros países. São abordados aspectos epidemiológicos, critérios diagnósticos, tratamento integrado e organização de serviço especializado, assim como especificidades do tratamento psicoterápico e farmacológico. As Diretrizes da Associação Brasileira de Estudos do Alcool e Outras Drogas reforçam a importância da abordagem adequada do dependente químico portador de comorbidade psiquiátrica.


Assuntos
Humanos , Transtornos Mentais , Sociedades Científicas , Transtornos Relacionados ao Uso de Substâncias , Brasil/epidemiologia , Comorbidade , Diagnóstico Duplo (Psiquiatria)/métodos , Transtornos Mentais/diagnóstico , Transtornos Mentais/epidemiologia , Transtornos Mentais/terapia , Transtornos Relacionados ao Uso de Substâncias/diagnóstico , Transtornos Relacionados ao Uso de Substâncias/epidemiologia , Transtornos Relacionados ao Uso de Substâncias/terapia
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