Alterações sistêmicas e bucais em pacientes usuários de cocaína: uma revisão integrativa da literatura / Cambios sistémicos y orales em pacientes consumidores de cocaína: una revisión bibliográfica integradora / Systemic and oral changes in cocaína-using patients: an integrative literature review

Introdução: A utilização de cocaína é bastante associada ao surgimento de algumas manifestações sistêmicas e também de algumas alterações orais. Objetivo: Identificaras alterações sistêmicas e bucais mais comuns a pacientes usuários de cocaína. Metodologia: Trata-se de uma revisão sistemática da literatura, considerando artigos com texto completo, com restrição de idioma em Português ou Inglês e que tenham sido publicados entre os anos de 2017 a 2022. Usou-se as bases de dados LiLaCS, MedLine e BBO, por via portal Biblioteca Virtual de Saúde, e SciELO. Os artigos excluídosf oram aqueles que não apresentaram relação explícita do uso de cocaína com alguma manifestação sistêmica e/ou bucal. Resultados: Após o processo de triagem,10 artigos foram salvos para serem analisados e 111 foram descartados por não atenderem aos critérios de inclusão. Dos 10 artigosselecionados,40% deles (n=4) trouxeram informações identificando possíveis riscos de desenvolvimento de doenças cardiovasculares sofridas pelos usuários de cocaína, 10%(n=1) identificou problemas cognitivos associados ao uso da cocaína,30% dos artigos (n=3) mostrou as alterações bucais associadas à utilização abusiva de cocaína. Conclusões: Houve a predominância de algumas manifestações sistêmicas e bucais nos indivíduos usuários de cocaína, como doenças cardiovasculares, xerostomia, perfurações no palato, etc. A partir disso, há algumas alterações sistêmicas e bucais provocadas por esse uso. Mediante o risco considerável, faz-se necessário que o Cirurgião-Dentista se atualize sobre essas alterações em pacientes usuários de cocaína visando promover um trabalho transdisciplinare multiprofissional para atender adequadamente às suas necessidades (AU).

Introduction: The use of cocaine is closely associated with the appearance of some systemic manifestations and also some oral alterations.Objective: To identify the most common systemic and oral alterations in cocaine-using patients.Methodology:This is a systematic review of the literature, considering full-text articles, with a language restriction of "Portuguese" or "English" and published between 2017 and 2022. We used the LiLaCS, MedLine and BBO databases, via the Virtual Health Library (VHL) portal, and SciELO.The articles excluded were those that did not explicitly relate cocaine use to some systemic and/or oral manifestation.Results: After the screening process, 10 articles were saved for analysis and 111 were discarded because they did not meet the inclusion criteria. Of the 10 articles selected, 40% (n=4) provided information identifying possible risks of developing cardiovascular diseases suffered by cocaine users, 10% (n=1)identified cognitive problems associated with cocaine use, 30% of the articles (n=3) showed oral alterations associated with cocaine abuse.Conclusions: There has been a predominance of some systemic and oral manifestations in cocaine users, such as cardiovascular diseases, xerostomia, perforations in the palate, etc. Based on this, there are some systemic and oral alterations caused by this use. Given the considerable risk, it is necessary for dentists to be up-to-date on these alterations in cocaine-using patients in order to promote transdisciplinary and multi-professional work to adequately meet their needs (AU).

Introducción: El consumo de cocaína está estrechamente asociado a la aparición de algunas manifestaciones sistémicas y también de algunas alteraciones orales. Objetivo:Identificar las alteraciones sistémicas y bucales más frecuentes en los consumidores de cocaína. Metodología: Se trata de una revisión sistemática de la literatura, considerando artículos a texto completo, con restricción de idioma en "portugués" o "inglés" y publicados entre 2017 y 2022. Se utilizaron las bases de datos LiLaCS, MedLine y BBO, a través del portal Biblioteca Virtual en Salud (BVS) y SciELO. Los artículos excluidos fueron aquellos que no mostraban una relación explícita entre el consumo de cocaína y alguna manifestación sistémica y/o oral. Resultados: Tras el proceso de cribado, se guardaron10 artículos para el análisis y se descartaron 111 por no cumplir los criterios de inclusión. De los 10 artículos seleccionados, el 40% (n=4) proporcionaba información que identificaba posibles riesgos de desarrollar enfermedades cardiovasculares sufridaspor consumidores de cocaína, el 10% (n=1) identificaba problemas cognitivos asociados al consumo de cocaína, el 30% de los artículos (n=3) mostraban alteraciones orales asociadas al abuso de cocaína.Conclusiones:Ha habido un predominio de algunas manifestaciones sistémicas y orales en los consumidores de cocaína, como enfermedades cardiovasculares, xerostomía, perforaciones en el paladar, etc. De acuerdo con esto, existen algunas alteraciones sistémicas y orales causadas por este uso. Dado el considerable riesgo, es necesario que los odontólogos estén al día sobre estas alteraciones en los pacientes consumidores de cocaína, con el fin de promover el trabajo transdisciplinar y multiprofesional para atender adecuadamente sus necesidades (AU).

Cuidado em saúde mental com gestantes usuárias de crack / Mental health care with pregnant crack users / Cuidadode salud mental con mujeres embarazadas que utilizan crack

Neste manuscrito, apresentamos uma pesquisa cujo objetivo foi o de compreender como vem sendo produzidas as práticas de cuidado às gestantes usuárias de crack nos serviços de saúde de um município do interior do Rio Grande do Sul. Este estudo de abordagem qualitativa, foi realizado junto a dois serviços públicos, o Programa de Redução de Danos (PRD) e o Centro de Atenção Psicossocial para Álcool e outras Drogas (CAPSad III), com cinco mulheres voluntárias para a pesquisa. As histórias de vida foram reconstruídas a partir de suas narrativas e também de profissionais da saúde que proveram algum tipo de cuidado às participantes. Após a exposição das histórias, refletimos sobre três pistas importantes para pensarmos as práticas de cuidado às gestantes usuárias de crack: saúde mental, uso de drogas e interseccionalidade; direitos humanos, hierarquias reprodutivas e concepções de maternidade; e as práticas de cuidado em saúde. Observamos que as concepções dos profissionais acerca da maternidade direcionam as práticas de cuidado em saúde, caracterizando-se como um cuidado no espectro da saúde materno-infantil, e não um cuidado direcionado à saúde da mulher. Conhecer as demandas de cuidado dessas mulheres é essencial para que possamos pensar em práticas de saúde pautadas pela clínica ampliada. (AU)

In this manuscript, we present a research whose objective was to understand how the practicesof care to the pregnant women users of crack have been being produced in the services of health in a town of Rio Grande do Sul. This study of qualitative approach it was developed jointly to two public services, the Program of Reduction of Harms (PRH) andPsychosocial Care Centers Alcohol and other Drugs (CAPSad), with five voluntary women for the research. The life histories were rebuilt starting from their narratives and also of health's professionals that provided some care to the participants.After exposing the stories, we reflected on three important clues to think about care practices for pregnant women who use crack: mental health, drug use and intersectionality; human rights, reproductive hierarchies and conceptions of motherhood; and health care practices. We observed that the professionals' conceptions about maternity guide health care practices, characterized as care in the spectrum of maternal and child health, and not care directed at women's health.Knowing the care demands of these women is essential for us to think about health practices guided by the expanded clinic. (AU)

En este manuscrito presentamos una investigación cuyoobjetivo fue comprender cómo se ha producidolas prácticas de atención a las embarazadas usuarias de crack en los servicios de salud de una ciudad del interior de Rio Grande do Sul. Este estudio cualitativo se realizó con dos servicios públicos, el Programa de Reducción de Daños (PRD) y el Centro de Atención Psicosocial de Alcohol y Otras Drogas (CAPSad III), con cinco mujeres voluntarias para la investigación. Las historias de vida fueron reconstruidas a partir de sus narrativas y también de profesionalesde la salud que brindaron algún tipo de atención a los participantes. Luego de exponer las historias, reflexionamos sobre tres claves importantes para pensar en las prácticas de cuidado de las embarazadas que consumen crack: salud mental, consumo de drogas y interseccionalidad; derechos humanos, jerarquías reproductivas y concepciones de la maternidad; y prácticas de atención de la salud.Observamos que las concepciones de los profesionales sobre la maternidad orientan las prácticas de atención de la salud, caracterizadas como cuidados en el espectro de la salud maternoinfantil, y no cuidados dirigidos a la salud de la mujer. Conocer las demandas de atención de estas mujeres es fundamental para que pensemos en las prácticas de salud guiadas por la clínica ampliada. (AU)

Hierarchical cue control of cocaine seeking in the face of cost.

RATIONALE: Addiction is characterized by intermittent drug seeking despite rising costs. This behavior is heavily influenced by environmental stimuli that signal drug availability and reinforce drug seeking. OBJECTIVE: To establish the relationship between three key aspects of human drug use in rats: the intermittent, binge nature of drug intake, the motivational conflict of drug seeking in the face of escalating negative costs, and the ability of different drug cues to interact to modulate relapse. METHODS: Male and female rats were trained to self-administer cocaine on an intermittent access schedule, where brief drug-availability states were signaled by a shift in the ambient lighting of the environment, and cocaine infusions were signaled by a separate proximal discrete cue. Rats then went through a conflict procedure, where foot shock intensity associated with cocaine seeking was escalated until intake was suppressed. We then completed relapse tests where the drug-delivery cue was noncontingently presented alone, or in the context of dynamic drug-availability state transitions. RESULTS: Intermittent access spurred psychomotor sensitization and binge-like cocaine intake. The intensity of binge-like drug taking during training was predictive of later drug seeking despite escalating costs during conflict. In relapse tests, the ability of a proximal discrete drug cue to trigger relapse was gated by the presence of a global cue signaling drug-availability state transitions. CONCLUSIONS: Our results suggest that the pattern of drug intake plays a role in many features of addiction, including modifying an individual's willingness to endure high costs associated with drug seeking. Furthermore, our studies indicate that drug-related sensory information can be hierarchically organized to exert a dynamic modulating influence on drug-seeking motivation.

Demand and cross-price elasticity of cocaine and social contact in a free-operant procedure of nonexclusive choice.

Research examining the social determinants of addiction has advanced significantly with the recent development of preclinical models of drug use and the social environment. These models reveal that drug use and social contact compete with one another for behavioral expression in discrete-trial choice procedures using concurrent schedules of reinforcement. The purpose of this study was to determine how concurrent access to cocaine and a social partner influences the demand for each alternative under free-operant conditions in which responding maintained by each reinforcer is independent and nonexclusive of the other. To this end, male rats were trained under a free-operant, concurrent schedule of reinforcement in which responding maintained by cocaine and access to a social partner operated independently of one another. Measures of economic demand (e.g., intensity, Omax, cross-price elasticity) were determined by manipulating the response requirement (i.e., fixed ratio value) across sessions. Tests were conducted in which the social partner was either treated or not treated with cocaine to determine whether the intoxication state of the partner influenced demand. The principal findings of this study are (1) demand for a cocaine-treated partner is greater than demand for a cocaine-free partner, (2) demand for cocaine is greater in the presence of a cocaine-treated partner than a cocaine-free partner, and (3) concurrent access to cocaine decreases demand for social contact. Notably, measures of cross-price elasticity indicated that social contact is a robust economic substitute for cocaine.

Hormonal milieu drives economic demand for cocaine in female rats.

There are substantial sex differences in drug abuse, and a key feature of cocaine addiction is pathologically high motivation for drug. We investigated the role of ovarian hormones on cocaine demand in female rats using a within-session threshold behavioral economics (BE) procedure, which allows us to compare motivation for drug across hormonal states and sex while controlling for differences in dose and intake. This approach quantifies demand elasticity (α) and free consumption (Q0, consumption at null effort) to determine motivation for cocaine. Overall, female rats showed greater motivation for cocaine compared to males. However, this difference was cycle phase-dependent - motivation for cocaine when females were in proestrus was lower compared to the same animals across cycle phases, and overall similar to that of males. Hormonal cycle phase accounted for 70% of the within-subject variance in demand elasticity, obscuring other individual differences in female demand. High serum progesterone (P4; e.g., in proestrus) predicted decreased cocaine motivation (high demand elasticity), whereas serum estradiol (E2) correlated to greater intake at null effort (Q0). However, individual differences were revealed across OVX females, who displayed a range of demand elasticity, as seen in males. E2 replacement in OVX females increased motivation for cocaine, whereas P4 replacement decreased motivation. We also found that as few as 4 weeks of cocaine self-administration accelerated estropause in female rats as young as 12 weeks old. By 13 weeks of self-administration, proestrus epochs were no longer observed, and cocaine demand was potentiated by persistent estrus in all females. Thus, P4 signaling is a key modulator of cocaine demand in females that may underlie previously observed sex differences in addiction phenotypes.

Modafinil reduces smoked cocaine self-administration in humans: effects vary as a function of cocaine 'priming' and cost.

BACKGROUND: The absence of an FDA-approved medication for the treatment of cocaine use disorder (CUD) may, in part, reflect the varying conditions present when the decision to use cocaine is made, with one medication unlikely to work under all conditions. The objective of this double-blind, placebo-controlled, human laboratory study was to test the effects of modafinil, a medication with mixed efficacy for the treatment of CUD, using a novel self-administration procedure designed to model distinct clinical scenarios. METHODS: During modafinil maintenance (0, 300 mg/day), participants chose to self-administer up to 7 doses of smoked cocaine (25 mg) under 9 conditions: immediately after exposure to: (a) cues associated with cocaine and a non-contingent cocaine administration, i.e. 'prime' (25 mg), (b) only cocaine cues, and (c) neither cues nor cocaine. Each condition was tested when self-administered cocaine cost $5, $10 and $15/dose. RESULTS: Nontreatment-seeking cocaine smokers (3 F,13 M), spending $388 ± 218/week on cocaine and with no history of alcohol use disorder, completed the study. Relative to placebo, modafinil robustly attenuated self-administration when cocaine was expensive ($10,$15/dose) and when there was no 'prime.' Modafinil had no effect on self-administration when cocaine was inexpensive ($5/dose) or when participants received a 'prime.' CONCLUSIONS: Modafinil's effects on cocaine-taking varied substantially as a function of recent cocaine exposure and cost, which may help explain the mixed clinical findings. Modafinil may be most effective for preventing relapse in abstinent patients, particularly under conditions in which cocaine is costly, rather than initiating abstinence for those continuing to use cocaine.

Initial development of a brief assessment of cocaine demand.

Cocaine demand is a behavioral economic measure assessing drug reward value and motivation to use drug. The purpose of the current study was to develop a brief assessment of cocaine demand (BACD). Results from the BACD were compared with self-report measures of cocaine use. Participants consisted of treatment-seeking individuals with cocaine use disorder (N = 22). Results revealed that indices of brief demand were significantly associated with various self-report measures of cocaine use. Overall, these results support the utility of a BACD for assessing cocaine demand.

Randomized trial of methadone treatment of arrestees: 24-month post-release outcomes.

BACKGROUND: We report on the 24-month post-release outcomes of arrestees with opioid use disorder (OUD) enrolled in a randomized trial comparing three treatment approaches initiated in jail. METHODS: Adults (N = 225) receiving medically supervised withdrawal from opioids in the Baltimore Detention Center within a few days of arrest were randomly assigned to: (1) interim methadone treatment plus patient navigation (IM + PN) started in the Detention Center; (2) IM; or (3) Enhanced Treatment-as-Usual (ETAU) consisting of detoxification with methadone and referral to treatment in the community. Participants in both methadone conditions could transfer to standard methadone treatment following release. Participants were interviewed at baseline, and 1, 3, 6, 12, and 24 months post-release. Urine was drug tested at follow-up and official arrest records were obtained. RESULTS: On an intention-to-treat basis, there were no significant differences among the three conditions over the 24-month post-release period in terms of opioid- or cocaine-positive urine test results or self-reported opioid or cocaine use, meeting opioid or cocaine use disorder criteria, self-reported criminal behavior, or the number of official arrests. There were 9 fatal overdoses, none occurring during methadone treatment, and 109 hospitalizations unrelated to the study. CONCLUSIONS: Given the high morbidity and mortality found in this population of arrestees and costs to society associated with their health care utilization and continued crime and arrests, research aimed at finding more effective interventions should be continued. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov: NCT02334215.

Behavioral economics of cocaine self-administration in male and female rats.

There are sex differences in the development of cocaine addiction. For example, the time that it takes for women from initial use to addiction is significantly shorter than for men. Thus, understanding why females are more vulnerable to cocaine addiction will provide insights into sex differences in the mechanisms underlying cocaine addiction. This study aimed to determine how cocaine demand intensity and elasticity might differ between sexes. In addition, the impact of estrous cycle and cocaine intake on demand was investigated. Male and female rats were trained to self-administer 0.125 mg of cocaine intravenously under a chained schedule in daily 2-h sessions for 2 weeks, and then, the cocaine demand function was determined with a modified within-session threshold procedure. Following the test, the rats began to self-administer a higher dose of cocaine (0.25 mg) to increase the cocaine intake. The demand function was then similarly determined in the same rats after 2 weeks of cocaine self-administration of the higher dose. No sex differences were found in either demand intensity or elasticity. Neither did the level of cocaine intake have an impact on demand. The demand elasticity, but not intensity, was significantly lower during proestrus/estrus compared with diestrus. These data suggest that the faster transition to cocaine addiction in women cannot be explained by sex differences in the demand for cocaine and such a demand may change during different phases of estrus cycle.

Suicide mortality risk in a cohort of individuals treated for alcohol, heroin or cocaine abuse: Results of a follow-up study.

Cohort study. This follow-up study (from 1975 to 2016) was aimed to estimate the mortality risk for suicide in a cohort of patients presenting to a public treatment centre for addiction (SERD) with Alcohol Use Disorder (AUD), Heroin Use Disorder - HUD or Cocaine Use Disorder (CUD), also relating to their access to a Mental Heath Service. Crude Mortality Rates for suicide were higher for patients with AUDs, for men and subjects 45-64 years old. Hanging was the main cause of suicide death. We highlight an increase in mortality in the period 2009-2012, which coincides with the economic recession, and in the year of first contact with a SERD. The Standardized Mortality Ratios (SMRs) were 4.9, higher among females than males. From the multivariate analysis, a higher risk for patients that were separated or divorced was observed. The results of our study provide some guidance on the features of subjects at greatest risk of death from suicide, which may be useful in reducing and preventing suicide and gaining a better clinical management of patients with SUDs.

Atenção à saúde no território como prática democrática: ações em cenas de uso de drogas como analisadores da democracia brasileira / Health care as a democratic practice: actions in drug use settings to analyze democracy in Brazil / Atención de la salud en el territorio como práctica democrática: acciones en escenas de uso de drogas como analizadores de la democracia brasileña

Propomos articular democracia, produção de saúde e cuidado com grupos vulnerabilizados. Utilizamos como analisadores ações estatais em cenas de uso de drogas ilícitas em São Paulo e no Rio de Janeiro, que coadunam com estratégias de intervenções sobre regiões tornadas negócios e sobre grupos que habitam tais regiões e, por isso, precisam ser removidos, que podem ser consideradas intervenções próprias ao neoliberalismo e seu correlato jurídico, o Estado de Exceção permanente. Entendemos que políticas de governo que pautam suas ações pela abstinência e internação dos usuários classificados como dependentes químicos estão em sinergia com a chamada guerra às drogas. Nosso objetivo é sinalizar que a atenção ao uso de substâncias psicoativas como preconizado pela estratégia da redução de danos tem potencial para capilarizar as diretrizes do Sistema Único de Saúde (SUS), da Reforma Psiquiátrica Brasileira e, desse modo, do escopo democrático nos territórios de maior vulnerabilidade social. (AU)

This article articulates democracy, health and health care among vulnerable groups. We use state actions in drug use settings in São Paulo and Rio de Janeiro carried out in conjunction with interventions to evict drug users living in districts that have become commercial areas to analyze democracy in Brazil; typical interventions associated with neoliberalism and its legal counterpart, the State of Permanent exception. We understand that government policies based on abstinence and internment of drug addicts are in tune with the so-called war on drugs. We highlight that the approach to the use of psychoactive substances embodied in harm reduction strategies has the potential to increase the capillarity of the guiding principles of the Brazilian National Health System (SUS), Mental Health Reform and, therefore, democracy in socially vulnerable areas. (AU)

Proponemos articular democracia, producción de salud y cuidado con grupos en situación de vulnerabilidad. Como analizadores utilizamos acciones estatales en escenas de uso de drogas ilícitas en São Paulo y Río de Janeiro, juntamente con intervenciones estratégicas sobre regiones convertidas en negocios y grupos que habitan tales regiones y que por eso tienen que ser retirados. Intervenciones propias del neoliberalismo y su correlación jurídica, el Estado de Excepción Permanente. Entendemos que políticas de gobierno que rigen sus acciones por la abstinencia e internación de los usuarios clasificados como dependientes químicos están en sinergia con la denominada guerra a las drogas. Nuestro objetivo es señalizar que la atención al uso de substancias psicoactivas conforme determinado por la estrategia de la reducción de daños tiene potencial para capilarizar las directrices del Sistema Brasileño de Salud (SUS), de la Reforma Psiquiátrica Brasileña y, de ese modo, del alcance democrático en los territorios de mayor vulnerabilidad social. (AU)

The Hang Up.

Over the past year, our ethics service has had numerous consultations involving patients who use the emergency department for regular dialysis. Sometimes, they have access to outpatient hemodialysis that they forgo; other times, they've been "fired" from this kind of outpatient facility, and so the ED is their last option. In most of these cases, we're called because the patient is disruptive once admitted to the ICU and behavior plans haven't helped. But the call from a resident this March 2020 morning was different, the patient had end-stage renal disease and often missed hemodialysis, but he wasn't disruptive. "It's just that he comes in after using cocaine, and given scarcity with the coronavirus and ICU beds…." I have come to think that this is one of the more insidious effects of the pandemic: that there will be a resurgence of the view that some patients deserve health care by virtue of their compliant behavior and that those who are nonadherent don't.

Mortality Risk among Cocaine Users before and after the Economic Recession: Results of a Longitudinal Study.

BACKGROUND: Studies have highlighted 2 different groups of cocaine users (CUs): "socially integrated" (stable living conditions, regular employment, use cocaine alone or in combination with other psychoactive substances) and "socially marginalized" (socioeconomic and health problems, former or current heroin users, many injecting cocaine). These differences are also found in the elevated mortality risk for CUs, higher among subjects with cocaine and heroin use. This study targeted residents in Northern Italy who turned to a public treatment center for drug addiction following problems caused by primary cocaine use between 1982 and 2016. OBJECTIVES: To estimate mortality risk for subjects who have never used heroin (CUs) compared to that of subjects who have used heroin (HCUs). METHOD: Retrospective cohort study. We selected 1,993 subjects; 18,015 Person Years (PY). RESULTS: Over time, the quota of subjects injecting cocaine and using heroin decreased, while patients not using heroin increased. Both new patients and crude mortality rates (CMR) decreased during the years 2009-2012 and increased in the following period. CMRs were 5.55 per 1,000 PY, higher for HCUs, men and subjects aged over 44 years. Standardized mortality rates were 3.49, higher for women, injecting cocaine and HCUS. Among CUs, most of the deaths were from injury excluding drug related and tumors; among HCUs, from drug-related causes and diseases of the cardiovascular system. CONCLUSION: The study results show a change in the characteristics of SERD clients being treated for primary cocaine use, which are reflected both in mortality risk and causes of death. After a long period of a decrease, mortality risk increased in the period after the economic recession. Aspects concerning the effects of the economic recession on the problematic consumption of cocaine and on the risk of death are discussed.

The number of lateral hypothalamus orexin/hypocretin neurons contributes to individual differences in cocaine demand.

Lateral hypothalamus (LH) orexin neuron signaling has been implicated in the motivation to seek and take drugs of abuse. The number of LH orexin neurons has been shown to be upregulated with exposure to drugs of abuse. We sought to determine if the number of LH orexin neurons related to individual differences in motivation (demand) for cocaine in our behavioral economics (BE) paradigm, and whether knockdown of these cells predicted changes in economic demand. We quantified LH orexin cell numbers in animals immediately following our BE paradigm, as well as after a 2-week period of abstinence, to relate the number of LH orexin cells to economic demand for cocaine. We also knocked down LH orexin expression with an orexin morpholino antisense to determine how reduced orexin numbers impacted cocaine demand. We found that animals with greater baseline motivation for cocaine (lower demand elasticity) had more LH orexin neurons. Following a 2-week abstinence from cocaine, the number of LH orexin neurons predicted economic demand for cocaine prior to abstinence, indicating that orexin expression is a persistent marker for demand. Reducing LH orexin cell numbers with antisense decreased motivation for cocaine (increased demand elasticity) without affecting baseline consumption. In addition, the number of spared LH orexin neurons after antisense treatment correlated with individual motivation for cocaine. These studies point to a role for the endogenous number of LH orexin neurons in individual differences in motivation for cocaine.

Baseline cocaine demand predicts contingency management treatment outcomes for cocaine-use disorder.

Cocaine use disorder (CUD) is a significant public health issue. Behavioral interventions such as contingency management (CM) have been demonstrated to be highly effective in promoting cocaine abstinence. However, identifying individual characteristics associated with cocaine relapse may help improve treatment outcomes. Cocaine demand is a behavioral economic measure that shares a scientific foundation with CM. In the current study, we assessed baseline cocaine demand using a hypothetical cocaine purchasing task. Participants (N = 58) consisted of treatment-seeking individuals with CUD. All participants received 1 month of CM treatment for cocaine abstinence, and treatment responders were defined as presenting 6 consecutive cocaine negative urine samples from thrice weekly clinic visits. Demand data were well described by the exponentiated demand model. Indices of demand (intensity of demand [Q0], elasticity [α]) were significantly associated with recent (last 30 days) cocaine use. Importantly, linear regression revealed that CM treatment nonresponders presented significantly higher Q0 (p = .025). Subsequent quantile regression analyses examining the relationship between CM treatment response and Q0 revealed statistically reliable effects of being a nonresponder across 3 of the lower percentiles (i.e., 15, 25, and 30). Overall, these findings provide further support for the utility of exponentiated demand model. To our knowledge, this is the first study to demonstrate an association between baseline demand and contingency management response and systematically extend the findings of prior demand research to a novel drug class, cocaine. (PsycINFO Database Record (c) 2020 APA, all rights reserved).

The impact of cocaine and heroin drug history on motivation and cue sensitivity in a rat model of polydrug abuse.

RATIONALE: Comorbid use of heroin and cocaine is highly prevalent among drug users and can greatly increase addiction risk. Nonetheless, little is known regarding how a multi-drug history impacts motivation and cue responsivity to individual drugs. OBJECTIVE: We used behavioral-economic procedures to examine motivation to maintain drug consumption and tests of drug-seeking to drug-associated cues to assess sensitivity to heroin and cocaine-associated cues in rats that had a self-administration history of heroin, cocaine, or both drugs. RESULTS: Unexpectedly, we found that groups with a polydrug history of heroin and cocaine did not have higher levels of motivation or cue-induced reinstatement of drug-seeking for either cocaine or heroin compared to single drug groups. Nonetheless, we did find drug-specific differences in both economic price and cue sensitivity. Specifically, demand elasticity was lower for cocaine compared to heroin in animals with a single drug history, but not with polydrug groups. In addition, cocaine demand was predictive of the degree of cue-induced reinstatement of drug-seeking for cocaine following extinction, whereas heroin demand was predictive of the degree of reactivity to a heroin-associated cue. Furthermore, although cue reactivity following the initial self-administration phase did not differ across cues and drug history, reactivity to both heroin and cocaine cues was greater during subsequent heroin use compared to cocaine use, and this enhanced reactivity to heroin cues persisted during forced abstinence. CONCLUSIONS: These results indicate that there is a greater motivation to maintain cocaine consumption, but higher sensitivity to drug-associated cues with a history of heroin use, suggesting that cocaine and heroin may drive continued drug use through different behavioral processes.

Pilot Randomized Controlled Trial of a Syndemics Intervention with HIV-Positive, Cocaine-Using Women.

This pilot randomized controlled trial examined the feasibility and acceptability of a Syndemics intervention targeting the intersection of stimulant use, trauma, and difficulties with HIV disease management in cocaine-using women. All participants received contingency management (CM) for 3 months with financial incentives for stimulant abstinence during thrice-weekly urine screening and refilling antiretroviral medications monthly. Sixteen participants were randomized to complete four expressive writing (n = 9) or four neutral writing (n = 7) sessions delivered during the CM intervention period. Completion rates for writing sessions were high (15 of 16 women completed all four sessions) and engagement in CM urine screening was moderate with women randomized to expressive writing providing a median of 11 non-reactive urine samples for stimulants. There were non-significant trends for those randomized to expressive writing to provide more CM urine samples that were non-reactive for stimulants, report greater decreases in severity of cocaine use, and display reductions in log10 HIV viral load at 6 months. Although the Syndemics intervention was feasible and acceptable to many women, qualitative interviews with eligible participants who were not randomized identified structural and psychological barriers to engagement. Further clinical research is needed to test the efficacy of Syndemics interventions with HIV-positive, cocaine-using women.

At-a-glance - Supervised Injection Services: a community-based response to the opioid crisis in the City of Ottawa, Canada. / Aperçu - Services d'injection supervisée : mesure d'intervention communautaire en réponse à la crise des opioïdes à Ottawa (Canada).

In response to the current opioid crisis in Canada, establishing safe injection services (SIS) in high risk communities has become more prevalent. In November 2017, The Trailer opened in Ottawa, Canada and tracks client use, overdose treatment and overdoses reversed. We analyzed data collected between November 2017 and August 2018. During peak hours, demand for services consistently exceeded The Trailer's capacity. Overdoses treated and reversed in this facility increased substantially during this period. Results suggest The Trailer provided an important though not optimal (due to space restrictions) harm reduction service to this high-risk community.

The Trailer (supervised injection service) was established as a response to the opioid crisis in Ottawa, Canada. The Trailer offers a 24-hour service to clients. Overdose reversals during the tracking period increased significantly. The demand for services has consistently exceeded capacity.

La Roulotte (service d'injection supervisée) a été établie en réponse à la crise des opioïdes à Ottawa, Canada. La Roulotte offre un service 24 heures sur 24 aux clients. Le nombre d'inversions des effets d'une surdose effectuées a augmenté considérablement au cours de la période de suivi. La demande de services a constamment dépassé la capacité de La Roulotte.