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Dermody SS, Uhrig A, Wardell JD, Tellez C, Raessi T, Kovacek K, Hart TA, Hendershot CS, Abramovich A. Daily and Momentary Associations Between Gender Minority Stress and Resilience With Alcohol Outcomes. Ann Behav Med 2024:kaae015. [PMID: 38582074 DOI: 10.1093/abm/kaae015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2024] Open
Abstract
BACKGROUND AND PURPOSE Minority stressors have been linked with alcohol use among transgender and gender diverse (TGD); however, no ecological momentary assessment studies have examined daily links between minority stress and alcohol use specifically among TGD. This study examined gender minority stressors and resilience as predictors of same-day or momentary alcohol-related outcomes. Feasibility and acceptability of procedures were evaluated. METHODS Twenty-five TGD adults (mean age = 32.60, SD = 10.82; 88% White) were recruited Canada-wide and participated remotely. They completed 21 days of ecological momentary assessment with daily morning and random surveys (assessing alcohol outcomes, risk processes, gender minority stressors, resilience), and an exit interview eliciting feedback. RESULTS Gender minority stress had significant and positive within-person relationships with same-day alcohol use (incidence risk ratio (IRR) = 1.12, 95% confidence interval [CI] [1.02, 1.23]), alcohol-related harms (IRR = 1.14, 95% CI [1.02, 1.28]), and coping motives (IRR = 1.06, 95% CI [1.03, 1.08]), as well as momentary (past 30-min) alcohol craving (IRR = 1.32, 95% CI [1.18, 1.47]), coping motives (IRR = 1.35, 95% CI [1.21, 1.51]), and negative affect (IRR = 1.28, 95% CI [1.20, 1.36]). Gender minority stress indirectly predicted same-day drinking via coping motives (ab = 0.04, 95% CI [0.02, 0.08]). Resilience was positively associated with same-day alcohol use (IRR = 1.25, 95% CI [1.03, 1.51]) but not harms. CONCLUSIONS TGD adults may use alcohol to cope with gender minority stress, which can increase the risk for alcohol-related harms. Interventions are needed to eliminate gender minority stressors and support adaptive coping strategies.
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Affiliation(s)
- Sarah S Dermody
- Department of Psychology, Toronto Metropolitan University, Toronto, ON, Canada
| | - Alexandra Uhrig
- Department of Psychology, Toronto Metropolitan University, Toronto, ON, Canada
| | - Jeffrey D Wardell
- Department of Psychology, York University, Toronto, ON, Canada
- Centre for Addiction and Mental Health, Institute for Mental Health Policy Research, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Carmina Tellez
- Department of Psychology, Toronto Metropolitan University, Toronto, ON, Canada
| | - Tara Raessi
- Department of Psychology, Toronto Metropolitan University, Toronto, ON, Canada
| | - Karla Kovacek
- Department of Psychology, Toronto Metropolitan University, Toronto, ON, Canada
| | - Trevor A Hart
- Department of Psychology, Toronto Metropolitan University, Toronto, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Christian S Hendershot
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Bowles Center for Alcohol Studies, School of Medicine, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Alex Abramovich
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
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Wardell JD, Coelho SG, Farrelly KN, Fox N, Cunningham JA, O'Connor RM, Hendershot CS. Interactive effects of alcohol and cannabis quantities in the prediction of same-day negative consequences among young adults. Alcohol Clin Exp Res (Hoboken) 2024. [PMID: 38575530 DOI: 10.1111/acer.15309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 03/05/2024] [Accepted: 03/08/2024] [Indexed: 04/06/2024]
Abstract
BACKGROUND Simultaneous alcohol and cannabis use is common, but observational studies examining negative consequences of simultaneous use have rarely considered dose-related interactions between alcohol and cannabis. This study examined interactions between quantities of cannabis and alcohol consumed in predicting negative consequences on simultaneous use days. METHODS Young adults (N = 151; 64% female; 62% White) reporting recent simultaneous use and at least weekly alcohol and cannabis use completed 21 daily, smartphone-based surveys assessing previous day quantities of cannabis and alcohol used, types of cannabis used (flower, concentrates, edibles), and negative substance-related consequences. Multilevel models examined: (1) whether negative consequences differed within-person across simultaneous use days and single-substance use days; and (2) whether quantities of alcohol and cannabis consumed on simultaneous use days interacted, within-person, to predict negative consequences. We focused on quantities of cannabis flower (grams) in primary analyses and explored quantities of other forms of cannabis (concentrates, edibles) in supplementary analyses. RESULTS Participants reported fewer negative consequences on alcohol-only (243 observations) and cannabis-only (713 observations) days than they did on simultaneous use days (429 observations). On simultaneous use days involving cannabis flower use (313 observations across 81 participants), the within-person association between number of standard drinks and negative consequences was weaker on days during which larger (vs. smaller) amounts of cannabis flower were consumed. Inspection of simple slopes revealed that decreased alcohol use was associated with less of a decline in negative consequences when combined with relatively greater amounts of cannabis flower. CONCLUSIONS Although simultaneous use was associated with more negative consequences than alcohol-only and cannabis-only use, negative consequences on simultaneous use days varied as a function of the interaction between alcohol and cannabis quantities. As findings suggest that using larger amounts of cannabis may attenuate declines in negative consequences associated with lighter drinking, interventions for higher-risk simultaneous use patterns may benefit from a focus on quantities of both alcohol and cannabis.
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Affiliation(s)
- Jeffrey D Wardell
- Department of Psychology, York University, Toronto, Ontario, Canada
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Sophie G Coelho
- Department of Psychology, York University, Toronto, Ontario, Canada
| | - Kyra N Farrelly
- Department of Psychology, York University, Toronto, Ontario, Canada
| | - Nicolle Fox
- Department of Psychology, York University, Toronto, Ontario, Canada
| | - John A Cunningham
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Addictions, Kings College London, London, UK
| | - Roisin M O'Connor
- Department of Psychology, Concordia University, Montreal, Quebec, Canada
| | - Christian S Hendershot
- Bowles Center for Alcohol Studies, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA
- Department of Psychiatry, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina, USA
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Das A, Hendershot CS, Husain MI, Knyahnytska Y, Elsaid S, Le Foll B, Kloiber S. Perceptions, Experiences, and Patterns of Cannabis Use in Individuals with Mood and Anxiety Disorders in the Context of Cannabis Legalization and Medical Cannabis Program in Canada - A Qualitative Study. Pharmacopsychiatry 2024. [PMID: 38467156 DOI: 10.1055/a-2264-1047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
INTRODUCTION Perceptions of cannabis as a potential medical treatment for mood and anxiety disorders have been increasing in the context of legalizations, availability, and medical cannabis programs, though current evidence predominately indicates risks and negative effects of cannabis use (CU) on mental health outcomes. This study aims to understand motivations, perceptions, effects, and patterns of CU in individuals with mood and anxiety disorders. METHODS Thirty-six adult patients diagnosed with mood or anxiety disorders, obsessive-compulsive disorder, or posttraumatic stress disorder who were currently using cannabis completed an in-depth qualitative interview on individual motivations, perceptions, experiences, effects, and patterns of their CU. The thematic analysis focused on phases of CU and sources of cannabis products and information. RESULTS Reported motivations for initiation of CU included curiosity, peer pressure, and dissatisfaction with conventional treatments. Factors such as psychotropic effects and coping with mental health symptoms and insomnia contributed to the continuation of CU. More negative effects, including cognitive dysfunction, worsening of mood, and anxiety symptoms, were acknowledged with ongoing CU. Concerning findings included common initiation of CU before age 18, combined medical and recreational CU, rare consultation of medical professionals on CU, and potential effects and harms. DISCUSSION Findings indicate individual complexity of motivations, perceptions, and patterns of CU in the study population. The reported potential beneficial effects of specific cannabis products should be further investigated. Findings emphasize patient-provider dialogue on both CU and conventional treatments. Information from this study can contribute to and inform the development of education, prevention, and intervention strategies.
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Affiliation(s)
- Ankita Das
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
| | - Christian S Hendershot
- Department of Psychiatry and Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, NC, USA
| | - M Ishrat Husain
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
| | - Yuliya Knyahnytska
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
| | - Sonja Elsaid
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
| | - Bernard Le Foll
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, Canada
- Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, Canada
| | - Stefan Kloiber
- Institute of Medical Sciences, University of Toronto, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
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Bremmer MP, Campbell AM, Xia K, Tarran R, Girdler SS, Hendershot CS. Effects of Nicotine Content and Preferred Flavor on Subjective Responses to E-cigarettes: A Randomized, Placebo-controlled Laboratory Study. Nicotine Tob Res 2024; 26:307-315. [PMID: 37539752 DOI: 10.1093/ntr/ntad143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 07/18/2023] [Accepted: 08/02/2023] [Indexed: 08/05/2023]
Abstract
INTRODUCTION Evidence suggests that e-liquid flavor and nicotine concentration are important factors in the initiation and maintenance of e-cigarette use (vaping). Flavors may increase the initiation and maintenance of vaping, and nicotine content is a factor in e-cigarette dependence and the efficacy of e-cigarettes for cigarette smoking cessation. Few human laboratory studies have assessed the joint and interactive effects of flavor and nicotine on subjective responses to e-cigarettes. METHODS Regular e-cigarette users (N = 89) completed a multi-session study involving a paced vaping procedure with e-liquid cartridges containing their preferred flavor (berry, menthol, or tobacco) or no flavor, with or without nicotine (18 mg). Subjective effects of vaping (satisfaction, reward, aversion, airway sensations, and craving relief) were assessed. RESULTS Nicotine significantly increased psychological reward and craving relief, whereas flavor significantly increased vaping satisfaction and taste. Nicotine dependence severity moderated the effect of nicotine on reward, such that those with the greatest dependence severity reported the greatest reward. CONCLUSIONS These findings support differential and noninteractive effects of e-liquid nicotine content and flavor on reinforcing effects of e-cigarettes. IMPLICATIONS E-liquid flavor and nicotine content have independent, non-interactive effects on subjective responses to vaping under controlled laboratory conditions. Among regular e-cigarette users, vaping a preferred flavor increased taste and satisfaction, but did not interact with nicotine to alter reward or craving. Further research on the ways in which these subjective effects may motivate vaping behavior among different populations of e-cigarette users would be useful to inform regulatory policy of ENDS products.
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Affiliation(s)
- Michael P Bremmer
- Department of Psychology & Neuroscience, Chapel Hill, NC, USA
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Alana M Campbell
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Kai Xia
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Robert Tarran
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, NC, USA
| | - Susan S Girdler
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Christian S Hendershot
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Coelho SG, Hendershot CS, Fox N, Wardell JD. How much THC is in that joint? A daily diary study of young adults' knowledge of the cannabinoid content of cannabis products. J Stud Alcohol Drugs 2024. [PMID: 38319080 DOI: 10.15288/jsad.23-00228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2024] Open
Abstract
OBJECTIVE Many young adults report frequent cannabis use and are at risk for cannabis harms. Knowledge of the tetrahydrocannabinol (THC) and cannabidiol (CBD) concentrations of cannabis products may promote harm reduction, but few studies have characterized cannabinoid concentration knowledge in this population. This study used day-level data to examine predictors of cannabinoid concentration knowledge and associations of cannabinoid concentration knowledge with substance-related consequences among young adults. METHOD Participants (N=131; mean age 22.11 years, 64.12% female) from a larger study of cannabis and alcohol co-use completed daily surveys over 21 days assessing knowledge of the cannabinoid concentrations of cannabis used, forms of cannabis used, motives for cannabis use (medicinal, nonmedicinal, both), and substance-related consequences. RESULTS On average, participants reported at least some knowledge of the THC and CBD concentrations of their cannabis on a respective 48% and 32% of their cannabis days. Generalized linear mixed models revealed that participants with a greater propensity to use non-flower (relative to flower) cannabis products and to report medicinal (relative to exclusively non-medicinal) motives for cannabis use reported greater cannabinoid concentration knowledge overall across days, controlling for sociodemographic factors and level of cannabis involvement. Participants with greater overall cannabinoid concentration knowledge reported positive substance-related consequences more often. In addition, participants were more likely to report negative substance-related consequences on days during which cannabinoid concentrations were known versus unknown. CONCLUSIONS Findings suggest that cannabinoid concentration knowledge may be higher among young adults who report primarily non-flower and medicinally-motivated cannabis use, although cannabinoid concentration knowledge, alone, may not protect against negative substance-related consequences at the day level.
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Affiliation(s)
- Sophie G Coelho
- Department of Psychology, York University, Toronto, ON Canada
| | - Christian S Hendershot
- Bowles Center for Alcohol Studies, University of North Carolina - Chapel Hill, Chapel Hill, NC, United States
- Department of Psychiatry, University of North Carolina - Chapel Hill, Chapel Hill, NC, United States
| | - Nicolle Fox
- Department of Psychology, York University, Toronto, ON Canada
| | - Jeffrey D Wardell
- Department of Psychology, York University, Toronto, ON Canada
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
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Bremmer MP, Hendershot CS. Social Media as Pharmacovigilance: The Potential for Patient Reports to Inform Clinical Research on Glucagon-Like Peptide 1 (GLP-1) Receptor Agonists for Substance Use Disorders. J Stud Alcohol Drugs 2024; 85:5-11. [PMID: 37917019 PMCID: PMC10846600 DOI: 10.15288/jsad.23-00318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 10/18/2023] [Indexed: 11/03/2023] Open
Abstract
The surge in popularity of semaglutide (Ozempic, Wegovy, Rybelsus) and other glucagon-like-peptide 1 (GLP-1) receptor agonists has been accompanied by widespread reports of unintended reductions in alcohol use (and other addictive behaviors) during treatment. With clinical trials of GLP-1 receptor agonists for substance use only recently under way, anecdotal reports (including via social media) are now a primary reason for interest in potential effects of GLP-1 receptor agonists on alcohol use in patient populations. The nature and volume of these reports raises the prospect that social media data can potentially be leveraged to inform the study of novel addiction treatments and the prioritization of behavioral or neurobiological targets for mechanistic research. This approach, which aligns with recent efforts to apply social media data to pharmacovigilance, may be particularly relevant for drug repurposing efforts. This possibility is illustrated by a thematic analysis of anonymous online reports concerning changes in alcohol use or alcohol-related effects during treatment with GLP-1 receptor agonists. These reports not only support the rationale for clinical trials but also point to potential neurobehavioral mechanisms (e.g., satiety, craving/preoccupation, aversion, altered subjective response) that might inform hypotheses for human laboratory and neuroscience studies. Refined methods for capturing patient reports of incidental medication effects on addictive behaviors at large scale could potentially lead to novel, pharmacovigilance-based approaches to identify candidate therapies for drug repurposing efforts.
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Affiliation(s)
- Michael P. Bremmer
- Department of Psychology & Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Christian S. Hendershot
- Department of Psychology & Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
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7
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Coelho SG, Hendershot CS, Quilty LC, Wardell JD. Screening for cannabis use disorder among young adults: Sensitivity, specificity, and item-level performance of the Cannabis Use Disorders Identification Test - Revised. Addict Behav 2024; 148:107859. [PMID: 37717499 DOI: 10.1016/j.addbeh.2023.107859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/15/2023] [Accepted: 09/07/2023] [Indexed: 09/19/2023]
Abstract
The Cannabis Use Disorders Identification Test Revised (CUDIT-R) is a widely used screening tool. However, its utility in screening for cannabis use disorder (CUD) among young adults requires further investigation. The current study evaluated the accuracy of the CUDIT-R in distinguishing between young adults with and without CUD. We also examined the individual item properties of the CUDIT-R in this sample. A community sample of young adults (N = 153, ages 19-26 years) who reported at least one lifetime period of regular cannabis use (i.e., twice or more per month for at least six months) completed the CUDIT-R and the Structured Clinical Interview for DSM-5 (SCID-5) Substance Use Module. The CUDIT-R showed good accuracy in distinguishing between young adults with and without CUD as determined by the SCID-5 (area under the receiver operating characteristic curve = 0.84). A cut-point of nine yielded 87.80 % sensitivity and 70.42 % specificity, with positive and negative predictive values of 77.42 % and 83.33 %, respectively. Item response theory analyses revealed that CUDIT-R items assessing impaired control, failure to meet expectations, time devoted to use, and memory and concentration problems displayed high discrimination and were relatively difficult, whereas items assessing frequency of use and attempts to reduce use showed moderate discrimination and relatively low difficulty. Items assessing hours high and use with potential for physical hazard displayed poor discrimination. The CUDIT-R appears to validly distinguish between young adults with and without CUD and may be useful in screening for CUD in this high-risk population. Further research considering individual item properties is needed to refine the CUDIT-R for use among young adults.
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Affiliation(s)
| | - Christian S Hendershot
- Bowles Center for Alcohol Studies, University of North Carolina-Chapel Hill, Chapel Hill, NC, United States; Department of Psychiatry, University of North Carolina-Chapel Hill, Chapel Hill, NC, United States
| | - Lena C Quilty
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada; Department of Psychiatry, University of Toronto, Canada
| | - Jeffrey D Wardell
- Department of Psychology, York University, Canada; Department of Psychiatry, University of Toronto, Canada; Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Canada.
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Leggio L, Hendershot CS, Farokhnia M, Fink-Jensen A, Klausen MK, Schacht JP, Simmons WK. GLP-1 receptor agonists are promising but unproven treatments for alcohol and substance use disorders. Nat Med 2023; 29:2993-2995. [PMID: 38001271 DOI: 10.1038/s41591-023-02634-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2023]
Affiliation(s)
- Lorenzo Leggio
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, MD, USA.
| | - Christian S Hendershot
- Bowles Center for Alcohol Studies and Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Mehdi Farokhnia
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, MD, USA
| | - Anders Fink-Jensen
- Psychiatric Centre Copenhagen, Mental Health Services in the Capitol Region of Denmark, Copenhagen, Denmark
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Mette Kruse Klausen
- Psychiatric Centre Copenhagen, Mental Health Services in the Capitol Region of Denmark, Copenhagen, Denmark
| | - Joseph P Schacht
- Department of Psychiatry, University of Colorado School of Medicine, Aurora, CO, USA
| | - W Kyle Simmons
- Department of Pharmacology & Physiology, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA
- OSU Biomedical Imaging Center, Oklahoma State University Center for Health Sciences, Tulsa, OK, USA
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Coelho SG, Hendershot CS, Rueda S, Wardell JD. Daily associations between cannabis use and alcohol use among people who use cannabis for both medicinal and nonmedicinal reasons: Substitution or complementarity? Psychol Addict Behav 2023; 37:1006-1018. [PMID: 37079804 DOI: 10.1037/adb0000930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
OBJECTIVE People who use cannabis for medicinal (vs. nonmedicinal) reasons report greater cannabis use and lower alcohol use, which may reflect a cannabis-alcohol substitution effect in this population. However, it is unclear whether cannabis is used as a substitute or complement to alcohol at the day level among people who use cannabis for both medicinal and nonmedicinal reasons. This study used ecological momentary assessment to examine this question. METHOD Participants (N = 66; 53.1% men; mean age 33 years) completed daily surveys assessing previous-day reasons for cannabis use (medicinal vs. nonmedicinal), cannabis consumption (both number of different types of cannabis used and grams of cannabis flower used), and number of standard drinks consumed. RESULTS Multilevel models revealed that, in general, greater cannabis consumption on a given day was associated with greater same-day alcohol use. Further, days during which cannabis was used for medicinal (vs. exclusively nonmedicinal) reasons were associated with reduced consumption of both cannabis and alcohol. The day-level association between medicinal reasons for cannabis use and lower alcohol consumption was mediated by using fewer grams of cannabis on medicinal cannabis use days. CONCLUSIONS Day-level cannabis-alcohol associations may be complementary rather than substitutive among people who use cannabis for both medicinal and nonmedicinal reasons, and lower (rather than greater) cannabis consumption on medicinal use days may explain the link between medicinal reasons for cannabis use and reduced alcohol use. Still, these individuals may use greater amounts of both cannabis and alcohol when using cannabis for exclusively nonmedicinal reasons. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | | | - Sergio Rueda
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health
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10
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Coelho SG, Rueda S, Costiniuk CT, Jenabian MA, Margolese S, Mandarino E, Shuper PA, Hendershot CS, Cunningham JA, Arbess G, Singer J, Wardell JD. Knowledge of Cannabinoid Content Among People Living with HIV Who Use Cannabis: a Daily Diary Study. Int J Behav Med 2023:10.1007/s12529-023-10221-x. [PMID: 37794278 DOI: 10.1007/s12529-023-10221-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/07/2023] [Indexed: 10/06/2023]
Abstract
BACKGROUND Many people living with HIV (PLWH) use cannabis for medicinal reasons. Patients' knowledge of the tetrahydrocannabinol (THC) and cannabidiol (CBD) concentrations of the cannabis products they use may be important in helping patients achieve symptom relief while guarding against potential risks of cannabis use. However, no studies have examined cannabinoid concentration knowledge among PLWH. METHOD PLWH (N = 29; 76% men, mean age 47 years) reporting cannabis use for both medicinal and nonmedicinal reasons completed daily surveys over 14 days assessing cannabis products used, knowledge of cannabinoid concentrations of cannabis products used, cannabis use motives (medicinal, nonmedicinal, both), and positive and negative cannabis-related consequences. Across the 361 cannabis use days captured on the daily surveys, at least some knowledge of cannabinoid concentrations was reported on an average of 43.1% (for THC) and 26.6% (for CBD) of the days. RESULTS Generalized linear mixed models revealed that participants were more likely to report knowing THC and CBD concentrations on days when they used non-flower forms of cannabis relative to days when they used cannabis flower only. Participants who used cannabis for medicinal reasons on a greater proportion of days had greater knowledge of cannabinoid concentration overall across days. Further, greater overall knowledge of cannabinoid concentrations was associated with fewer reported negative cannabis-related consequences. CONCLUSIONS Findings suggest that among PLWH, knowledge of cannabinoid concentrations may be higher when using non-flower cannabis products and among those reporting primarily medicinal cannabis use. Moreover, knowledge of cannabinoid concentration may protect against negative cannabis-related consequences in this population.
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Affiliation(s)
- Sophie G Coelho
- Department of Psychology, York University, 277 Behavioural Sciences Building, 4700 Keele St., Toronto, ON, Canada
| | - Sergio Rueda
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
- CIHR Canadian HIV Trials Network, Vancouver, BC, Canada
| | - Cecilia T Costiniuk
- CIHR Canadian HIV Trials Network, Vancouver, BC, Canada
- Chronic Viral Illness Service and Division of Infectious Diseases, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
- Infection and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Mohammad-Ali Jenabian
- CIHR Canadian HIV Trials Network, Vancouver, BC, Canada
- Department of Biological Sciences, Université du Québec á Montréal, Montreal, QC, Canada
| | | | | | - Paul A Shuper
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Christian S Hendershot
- Department of Psychiatry, University of North Carolina - Chapel Hill, Chapel Hill, NC, USA
- Bowles Centre for Alcohol Studies, University of North Carolina - Chapel Hill, Chapel Hill, NC, USA
| | - John A Cunningham
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
- Department of Addictions, Kings College London, London, UK
| | - Gordon Arbess
- Unity Health Toronto, St. Michael's Hospital, Toronto, ON, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
| | - Joel Singer
- CIHR Canadian HIV Trials Network, Vancouver, BC, Canada
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
| | - Jeffrey D Wardell
- Department of Psychology, York University, 277 Behavioural Sciences Building, 4700 Keele St., Toronto, ON, Canada.
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
- CIHR Canadian HIV Trials Network, Vancouver, BC, Canada.
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Coelho SG, Hendershot CS, Aston ER, Ruocco AC, Quilty LC, Tyndale RF, Wardell JD. Executive functions and behavioral economic demand for cannabis among young adults: Indirect associations with cannabis consumption and cannabis use disorder. Exp Clin Psychopharmacol 2023:2024-10185-001. [PMID: 37732960 PMCID: PMC10954585 DOI: 10.1037/pha0000678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Behavioral economic demand for cannabis is robustly associated with cannabis consumption and cannabis use disorder (CUD). However, few studies have examined the processes underlying individual differences in the relative valuation of cannabis (i.e., demand). This study examined associations between executive functions and cannabis demand among young adults who use cannabis. We also examined indirect associations of executive functions with cannabis consumption and CUD symptoms through cannabis demand. Young adults (N = 113; 58.4% female; mean age 22 years) completed a Marijuana Purchase Task. Participants also completed cognitive tasks assessing executive functions (set shifting, inhibitory control, working memory) and semistructured interviews assessing past 90-day cannabis consumption (number of grams used) and number of CUD symptoms. Poorer inhibitory control was significantly associated with greater Omax (peak expenditure on cannabis) and greater intensity (cannabis consumption at zero cost). Poorer working memory was significantly associated with lower elasticity (sensitivity of consumption to escalating cost). Lower inhibitory control was indirectly associated with greater cannabis consumption and CUD symptoms through greater Omax and intensity, and poorer working memory was indirectly associated with greater cannabis consumption and CUD symptoms through reduced elasticity. This study provides novel evidence that executive functions are associated with individual differences in cannabis demand. Moreover, these results suggest that cannabis demand could be a mechanism linking poorer executive functioning with heavier cannabis use and CUD, which should be confirmed in future longitudinal studies. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
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Affiliation(s)
| | - Christian S. Hendershot
- Bowles Center for Alcohol Studies, University of North Carolina–Chapel Hill, Chapel Hill, NC
- Department of Psychiatry, University of North Carolina–Chapel Hill, Chapel Hill, NC
| | - Elizabeth R. Aston
- Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, Brown University School of Public Health
| | - Anthony C. Ruocco
- Department of Psychological Clinical Science, University of Toronto
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto
| | - Lena C. Quilty
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto
| | - Rachel F. Tyndale
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto
- Department of Pharmacology and Toxicology, University of Toronto
| | - Jeffrey D. Wardell
- Department of Psychology, York University
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Canada
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12
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McPhee MD, Hendershot CS. Meta-analysis of acute alcohol effects on response inhibition. Neurosci Biobehav Rev 2023; 152:105274. [PMID: 37277010 DOI: 10.1016/j.neubiorev.2023.105274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 05/11/2023] [Accepted: 06/02/2023] [Indexed: 06/07/2023]
Abstract
Alcohol intoxication impairs response inhibition; however, discrepant findings have been reported regarding the magnitude and moderators of this effect. This meta-analysis of human laboratory studies aimed to quantify acute effects of alcohol on response inhibition and evaluate moderators of this effect. Eligible studies examined alcohol's effects on response inhibition with the Go/No-Go (GNG) task (n = 1616 participants) or Stop Signal Task (SST) (n = 1310 participants). Results revealed a detrimental effect of acute alcohol on response inhibition overall (g = 0.411, 95 % CI [0.350, 0.471]), with similar effects in studies using GNG (g = 0.431, SE = 0.031) and SST (g = 0.366, SE = 0.063). Effect sizes were larger in studies involving higher breath alcohol concentration levels and under GNG conditions that established a prepotent response set. These findings establish the magnitude, precision, and potential moderators of alcohol's effects on inhibitory control, furthering understanding of a key neurobehavioral mechanism proposed to underlie alcohol-related impulsivity and impaired control over consumption.
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Affiliation(s)
- Matthew D McPhee
- Rotman Research Institute, Baycrest Academy for Research and Education, 3560 Bathurst Street, Toronto M6A2E1, Ontario, Canada.
| | - Christian S Hendershot
- Bowles Center for Alcohol Studies, 104 Manning Drive, Chapel Hill, NC 27599-7178, USA; Department of Psychiatry, University of North Carolina at Chapel Hill, 104 Manning Drive, Chapel Hill, NC 27599-7178, USA
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13
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Best LM, Hendershot CS, Buckman JF, Jagasar S, McPhee MD, Muzumdar N, Tyndale RF, Houle S, Logan R, Sanches M, Kish SJ, Le Foll B, Boileau I. Association Between Fatty Acid Amide Hydrolase and Alcohol Response Phenotypes: A Positron Emission Tomography Imaging Study With [ 11C]CURB in Heavy-Drinking Youth. Biol Psychiatry 2023; 94:405-415. [PMID: 36868890 DOI: 10.1016/j.biopsych.2022.11.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 11/18/2022] [Accepted: 11/30/2022] [Indexed: 12/12/2022]
Abstract
BACKGROUND Reductions in fatty acid amide hydrolase (FAAH), the catabolic enzyme for the endocannabinoid anandamide, may play a role in drinking behavior and risk for alcohol use disorder. We tested the hypotheses that lower brain FAAH levels in heavy-drinking youth are related to increased alcohol intake, hazardous drinking, and differential response to alcohol. METHODS FAAH levels in the striatum, prefrontal cortex, and whole brain were determined using positron emission tomography imaging of [11C]CURB in heavy-drinking youth (N = 31; 19-25 years of age). C385A FAAH genotype (rs324420) was determined. Behavioral (n = 29) and cardiovascular (n = 22) responses to alcohol were measured during a controlled intravenous alcohol infusion. RESULTS Lower [11C]CURB binding was not significantly related to frequency of use but was positively associated with hazardous drinking and reduced sensitivity to the negative effects of alcohol. During alcohol infusion, lower [11C]CURB binding related to greater self-reported stimulation and urges and lower sedation (p < .05). Lower heart rate variability was related to both greater alcohol-induced stimulation and lower [11C]CURB binding (p < .05). Family history of alcohol use disorder (n = 14) did not relate to [11C]CURB binding. CONCLUSIONS In line with preclinical studies, lower FAAH in the brain was related to a dampened response to the negative, impairing effects of alcohol, increased drinking urges, and alcohol-induced arousal. Lower FAAH might alter positive or negative effects of alcohol and increase urges to drink, thereby contributing to the addiction process. Determining whether FAAH influences motivation to drink through increased positive/arousing effects of alcohol or greater tolerance should be investigated.
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Affiliation(s)
- Laura M Best
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Christian S Hendershot
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina
| | - Jennifer F Buckman
- Department of Kinesiology and Health, Rutgers University, New Brunswick, New Jersey; Center of Alcohol and Substance Use Studies, Rutgers University, New Brunswick, New Jersey
| | - Samantha Jagasar
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Matthew D McPhee
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychological Clinical Science, University of Toronto, Toronto, Ontario, Canada
| | - Neel Muzumdar
- Department of Kinesiology and Health, Rutgers University, New Brunswick, New Jersey
| | - Rachel F Tyndale
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - Sylvain Houle
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Renee Logan
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Marcos Sanches
- Biostatistics Core, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Stephen J Kish
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada; Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Bernard Le Foll
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada; Department of Community and Family Medicine, University of Toronto, Toronto, Ontario, Canada; Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, Ontario, Canada
| | - Isabelle Boileau
- Brain Health Imaging Centre, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada; Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada; Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada.
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14
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Xiao KB, Grennell E, Ngoy A, George TP, Le Foll B, Hendershot CS, Sloan ME. Cannabis self-administration in the human laboratory: a scoping review of ad libitum studies. Psychopharmacology (Berl) 2023:10.1007/s00213-023-06360-4. [PMID: 37157001 DOI: 10.1007/s00213-023-06360-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 03/26/2023] [Indexed: 05/10/2023]
Abstract
Cannabis self-administration studies may be helpful for identifying factors that influence cannabis consumption and subjective response to cannabis. Additionally, these paradigms could be useful for testing novel pharmacotherapies for cannabis use disorder. This scoping review aims to summarize the findings from existing ad libitum cannabis self-administration studies to determine what has been learned from these studies as well as their limitations. We examined studies that specifically examined cannabis smoking, focusing on subjective response and self-administration behavior (e.g., smoking topography). A systematic search was conducted using PubMed and Embase from inception to October 22, 2022. Our search strategy identified 26 studies (total N = 662, 79% male) that met our eligibility criteria. We found that tetrahydrocannabinol (THC) concentration significantly affected subjective response to cannabis in some but not all studies. In general, cannabis self-administration tended to be most intense at the beginning of the laboratory session and decreased in later parts of the session. There was limited data on cannabis self-administration in adults older than 55. Data on external validity and test-retest reliability were also limited. Addressing these limitations in future ad libitum cannabis self-administration studies could lead to more valid and generalizable paradigms, which in turn could be used to improve our understanding of cannabis use patterns and to help guide medication development for cannabis use disorder.
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Affiliation(s)
- Ke Bin Xiao
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - Erin Grennell
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - Anthony Ngoy
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - Tony P George
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Biobehavioural Addictions and Concurrent Disorders Research Laboratory (BACDRL), Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Bernard Le Foll
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
- Translational Addiction Research Laboratory, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, Ontario, Canada
- Waypoint Research Institute, Waypoint Centre for Mental Health Care, Penetanguishene, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Christian S Hendershot
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Matthew E Sloan
- Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
- Department of Pharmacology & Toxicology, University of Toronto, Toronto, Ontario, Canada.
- Department of Psychiatry, Temerty Faculty of Medicine, University of Toronto, Toronto, Ontario, Canada.
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada.
- Department of Psychological Clinical Science, University of Toronto Scarborough, Toronto, Ontario, Canada.
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15
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Wardell JD, Rueda S, Fox N, Costiniuk CT, Jenabian MA, Margolese S, Mandarino E, Shuper P, Hendershot CS, Cunningham JA, Arbess G, Singer J. Disentangling Medicinal and Recreational cannabis Use Among People Living with HIV: An Ecological Momentary Assessment Study. AIDS Behav 2023; 27:1350-1363. [PMID: 36342567 DOI: 10.1007/s10461-022-03871-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/16/2022] [Indexed: 11/09/2022]
Abstract
This study examined the feasibility of using ecological momentary assessment (EMA) to disentangle medicinal cannabis use (MCU) from recreational cannabis use (RCU) among people living HIV (PLWH). Over a 14-day period, PLWH (N = 29) who engaged in both MCU and RCU completed a smartphone-based survey before and after every cannabis use event assessing general motivation for cannabis use (MCU-only, RCU-only, or mixed MCU/RCU), cannabis use behavior, and several antecedents and outcomes of cannabis use. A total of 739 pre-cannabis surveys were completed; 590 (80%) of the prompted post-cannabis surveys were completed. Motives for cannabis use were reported as MCU-only on 24%, RCU-only on 30%, and mixed MCU/RCU on 46% of pre-cannabis surveys. Mixed effects models examined within-person differences across MCU-only, RCU-only, and mixed MCU/RCU events. Results showed that relative to RCU-only events, MCU-only events were more likely to involve symptom management and drug substitution motives, physical and sleep-related symptoms, solitary cannabis use, and use of cannabis oils and sprays; MCU-only events were less likely to involve relaxation, happiness, and wellness motives, cannabis flower use, and positive cannabis consequences. Differences between mixed MCU/RCU and RCU-only events were similar, except that mixed MCU/RCU events were additionally associated with stress reduction motives and symptoms of anxiety and depression. Findings support the feasibility of partially disentangling MCU and RCU behavior among PLWH who engage in concurrent MCU and RCU. This study highlights the need for more EMA studies isolating MCU from RCU to inform ongoing changes to cannabis policies.
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Affiliation(s)
- Jeffrey D Wardell
- Department of Psychology, York University, 101 Behavioural Sciences Building, 4700 Keele St, M3J 1P0, Toronto, ON, Canada.
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada.
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada.
| | - Sergio Rueda
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada
| | - Nicolle Fox
- Department of Psychology, York University, 101 Behavioural Sciences Building, 4700 Keele St, M3J 1P0, Toronto, ON, Canada
| | - Cecilia T Costiniuk
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada
- Chronic Viral Illness Service and Division of Infectious Diseases, Department of Medicine, McGill University Health Centre, Montreal, QC, Canada
- Infection and Immunity in Global Health Program, Research Institute of the McGill University Health Centre, Montreal, QC, Canada
| | - Mohammad-Ali Jenabian
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada
- Department of Biological Sciences, Université du Québec à Montréal, Montreal, QC, Canada
| | - Shari Margolese
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada
| | - Enrico Mandarino
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada
| | - Paul Shuper
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
| | - Christian S Hendershot
- Bowles Centre for Alcohol Studies, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
- Department of Psychiatry, University of North Carolina-Chapel Hill, Chapel Hill, NC, USA
| | - John A Cunningham
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
- Department of Addictions, Kings College London, London, UK
| | - Gordon Arbess
- Unity Health Toronto, St. Michael's Hospital, Toronto, ON, Canada
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada
| | - Joel Singer
- Canadian Institutes of Health Research Canadian HIV Trials Network, Vancouver, BC, Canada
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
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16
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Corran C, Hendershot CS, O'Connor RM. Explanatory pathways linking anxiety sensitivity and alcohol (mis)use: A prospective state–trait analysis among emerging adults. Psychology of Addictive Behaviors 2022:2023-28999-001. [DOI: 10.1037/adb0000903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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17
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Zaso MJ, Hendershot CS. Effects of varenicline and bupropion on laboratory smoking outcomes: Meta-analysis of randomized, placebo-controlled human laboratory studies. Addict Biol 2022; 27:e13218. [PMID: 36001439 PMCID: PMC9413474 DOI: 10.1111/adb.13218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 07/14/2022] [Accepted: 07/17/2022] [Indexed: 11/30/2022]
Abstract
Human laboratory studies are widely used to evaluate behavioural mechanisms of pharmacotherapy effects. Results from human laboratory studies examining smoking cessation pharmacotherapies have not been examined in aggregate. The current meta-analysis aimed to synthesize data from randomized, placebo-controlled human laboratory studies on the effects of non-nicotine pharmacotherapies on outcomes relevant for smoking cessation. Literature searches identified 15 human laboratory studies of varenicline (n = 697) and 9 studies of bupropion (n = 313) with sufficient data for inclusion. Studies involved acute or subacute pharmacotherapy treatment with administration durations ranging from a single dose to 8 weeks. Primary outcomes examined were craving, withdrawal and behavioural indices of smoking. Varenicline significantly reduced craving (Hedge's g = -0.36[-0.54,-0.17], p < 0.001), withdrawal (g = -0.25[-0.41,-0.09], p = 0.003) and behavioural indices of smoking (g = -0.36[-0.63,-0.08], p = 0.01) relative to placebo. In contrast, results were inconclusive regarding bupropion's effects on craving (g = -0.13[-0.32,0.05], p = 0.15), withdrawal (g = -0.15[-0.44,0.14], p = 0.31) and behavioural indices of smoking (g = -0.05[-0.35,0.24], p = 0.73) relative to placebo. Findings provide meta-analytic support that short-term varenicline treatment decreases craving, withdrawal symptoms and smoking behaviour under controlled laboratory conditions. However, findings also suggest the ability of human laboratory paradigms to detect pharmacotherapy effects may differ by treatment type. Pharmacotherapy discovery and evaluation efforts utilizing human laboratory methods should aim to align study designs and laboratory procedures with presumed therapeutic mechanisms when possible.
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Affiliation(s)
- Michelle J. Zaso
- Clinical and Research Institute on Addictions, University at Buffalo – The State University of New York, Buffalo, NY USA
| | - Christian S. Hendershot
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
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Abstract
Substance use disorders are a leading cause of morbidity and mortality, and available pharmacological treatments are of modest efficacy. Histamine is a biogenic amine with four types of receptors. The histamine H3 receptor (H3R) is an autoreceptor and also an heteroreceptor. H3Rs are highly expressed in the basal ganglia, hippocampus and cortex, and regulate a number of neurotransmitters including acetylcholine, norepinephrine, GABA and dopamine. Its function and localization suggest that the H3R may be relevant to a number of psychiatric disorders and could represent a potential therapeutic target for substance use disorders. The purpose of the present review is to summarize preclinical studies investigating the effects of H3R agonists and antagonists on animal models of alcohol, nicotine and psychostimulant use. At present, the effects of H3R antagonists such as thioperamide, pitolisant or ciproxifan have been investigated in drug-induced locomotion, conditioned place preference, drug self-administration, reinstatement, sensitization and drug discrimination. For alcohol and nicotine, the effects of H3R ligands on two-bottle choice and memory tasks, respectively, have also been investigated. The results of these studies are inconsistent. For alcohol, H3R antagonists generally decreased the reward-related properties of ethanol, which suggests that H3R antagonists may be effective as a treatment option for alcohol use disorder. However, the effects of H3R antagonists on nicotine and psychostimulant motivation and reward are less clear. H3R antagonists potentiated the abuse-related properties of nicotine, but only a handful of studies have been conducted. For psychostimulants, evidence is mixed and suggests that more research is needed to establish whether H3R antagonists are a viable therapeutic option. The fact that different drugs of abuse have different brain targets may explain the differential effects of H3R ligands.
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Affiliation(s)
- Patricia Di Ciano
- Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
| | - Christian S Hendershot
- Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Bernard Le Foll
- Department of Pharmacology and Toxicology, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Translational Addiction Research Laboratory, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Department of Psychiatry, Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
- Addictions Division, Centre for Addiction and Mental Health, Toronto, ON, Canada.
- Department of Family and Community Medicine, University of Toronto, Toronto, ON, Canada.
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Cunningham JA, Godinho A, Hendershot CS, Kay-Lambkin F, Neighbors C, Griffiths KM, Schell C. Randomized controlled trial of online interventions for co-occurring depression and hazardous alcohol consumption: Primary outcome results. Internet Interv 2021; 26:100477. [PMID: 34786350 PMCID: PMC8579144 DOI: 10.1016/j.invent.2021.100477] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 10/30/2021] [Accepted: 11/01/2021] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND AND AIMS The current trial tested the benefits of offering a brief online intervention for hazardous alcohol consumption along with one for depression among people experiencing both conditions. METHODS Online advertisements were used to recruit people with persistent low mood. Those who also had current hazardous alcohol consumption were identified and invited to take part in the trial (those not eligible were offered access to the online depression intervention). Participants were randomized to an established intervention for depression (MoodGYM; M-only) or to receive MoodGYM plus a brief personalized feedback intervention for hazardous drinking (Check Your Drinking; M + CYD). Participants were followed-up at three and six months. RESULTS While levels of depression symptoms (p < .001) and hazardous alcohol consumption (p < .001) reduced in both the M-only and the M + CYD groups, there was no difference between groups on drinking (p = .374) or depression outcomes (p = .752). Further, participants who were provided both interventions logged into the intervention website less often (M = 4.1, SD = 3.9) compared to participants only offered the depression intervention (M = 4.9, SD = 5.2), t (986) = 2.47, p = .014. However, there was no significant difference (p > .05) in the number of MoodGYM modules completed between the two groups. DISCUSSION AND CONCLUSION The current trial found no benefit to providing a brief online intervention for hazardous alcohol consumption alongside one for depression among people experiencing these co-occurring disorders. Further, the finding that adding an online intervention for drinking to one for depression led to a small reduction in the number of times the interventions were accessed implies the need for caution when deciding how best to provide online help to those with co-occurring depression and hazardous alcohol consumption.Trial Registration: ClinicalTrials.govNCT03421080.
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Affiliation(s)
- John A. Cunningham
- National Addiction Centre, Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, United Kingdom
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Corresponding author at: National Addiction Centre, Institute of Psychiatry, Psychology and Neuroscience, Kings College London, London, United Kingdom.
| | | | - Christian S. Hendershot
- Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Department of Psychiatry and Bowles Center for Alcohol Studies, University of North Carolina, Chapel Hill, USA
| | | | | | - Kathleen M. Griffiths
- Research School of Public Health, Australian National University, Canberra, Australia
| | - Christina Schell
- Centre for Addiction and Mental Health, Toronto, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
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Chukwueke CC, Nona CN, McPhee MD, Mansouri E, Rubin-Kahana DS, Martinez D, Boileau I, Hendershot CS, Le Foll B. Exploring regulation and function of dopamine D3 receptors in alcohol use disorder. A PET [ 11C]-(+)-PHNO study. Neuropsychopharmacology 2021; 46:2112-2120. [PMID: 34349232 PMCID: PMC8336665 DOI: 10.1038/s41386-021-01095-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 06/24/2021] [Accepted: 07/07/2021] [Indexed: 02/07/2023]
Abstract
Preclinical studies support an important role of dopamine D3 receptors (DRD3s) in alcohol use disorder (AUD). In animals, voluntary alcohol consumption increases DRD3 expression, and pharmacological blockade of DRD3s attenuates alcohol self-administration and reinstatement of alcohol seeking. However, these findings have yet to be translated in humans. This study used positron emission tomography (PET) and [11C]-(+)-PHNO to compare receptor levels in several dopamine D2 receptor (DRD2) and DRD3 regions of interest between AUD subjects in early abstinence (n = 17; 6.59 ± 4.14 days of abstinence) and healthy controls (n = 18). We recruited non-treatment seeking subjects meeting DSM-5 criteria for AUD. We examined the relationship between DRD2/3 levels and both alcohol craving and alcohol motivation/wanting, using a cue reactivity procedure and an intravenous alcohol self-administration (IVASA) paradigm, respectively. [11C]-(+)-PHNO binding levels in AUD subjects were significantly lower than binding in HCs when looking at all DRD2/3 ROIs jointly (Wilk's Λ = .58, F(6,28) =3.33, p = 0.013, η2p = 0.42), however there were no region-specific differences. Binding values demonstrate -12.3% and -16.1% lower [11C]-(+)-PHNO binding in the SMST and SN respectively, though these differences did not withstand Bonferroni corrections. There was a positive association between [11C]-(+)-PHNO binding in the SN (almost exclusively reflective of DRD3) and alpha (lower values reflect higher alcohol demand) in the APT after Bonferroni corrections (r = 0.66, p = 0.0080). This demonstrates that AUD subjects with lower DRD3 levels in the SN exhibit increased demand for alcohol. These results replicate previous findings demonstrating reduced DRD2/3 levels while also supporting a lack of DRD3 upregulation and potential downregulation in early abstinent AUD. Furthermore, the finding that binding in the SN is associated with alcohol demand warrants further examination.
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Affiliation(s)
- Chidera C. Chukwueke
- grid.155956.b0000 0000 8793 5925Translational Addiction Research Laboratory, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON Canada
| | - Christina N. Nona
- grid.14709.3b0000 0004 1936 8649McGill University Faculty of Medicine, Montreal, QC Canada
| | - Matthew D. McPhee
- grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto, Toronto, Canada
| | - Esmaeil Mansouri
- grid.155956.b0000 0000 8793 5925Addiction Imaging Research Group, Centre for Addiction and Mental Health, Toronto, ON Canada
| | - Dafna S. Rubin-Kahana
- grid.155956.b0000 0000 8793 5925Translational Addiction Research Laboratory, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Diana Martinez
- grid.21729.3f0000000419368729Columbia University Irving Medical Center, New York, NY USA ,grid.413734.60000 0000 8499 1112New York State Psychiatric Institute, New York, NY USA
| | - Isabelle Boileau
- grid.155956.b0000 0000 8793 5925Addiction Imaging Research Group, Centre for Addiction and Mental Health, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Christian S. Hendershot
- grid.10698.360000000122483208Department of Psychiatry, University of North Carolina at Chapel Hill, Chapel Hill, USA ,grid.10698.360000000122483208Bowles Center for Alcohol Studies, University of North Carolina at Chapel Hill, Chapel Hill, USA
| | - Bernard Le Foll
- grid.155956.b0000 0000 8793 5925Translational Addiction Research Laboratory, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON Canada ,grid.17063.330000 0001 2157 2938Department of Psychology, University of Toronto, Toronto, Canada ,grid.17063.330000 0001 2157 2938Department of Psychiatry, University of Toronto, Toronto, Canada ,grid.155956.b0000 0000 8793 5925Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada ,grid.17063.330000 0001 2157 2938Department of Family and Community Medicine, University of Toronto, Toronto, Canada
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21
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Schlagintweit HE, Tyndale RF, Hendershot CS. Acute effects of a very low nicotine content cigarette on laboratory smoking lapse: Impacts of nicotine metabolism and nicotine dependence. Addict Biol 2021; 26:e12930. [PMID: 32573054 DOI: 10.1111/adb.12930] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 04/29/2020] [Accepted: 05/31/2020] [Indexed: 12/13/2022]
Abstract
Reducing cigarette nicotine content to nonaddictive levels facilitates smoking cessation; however, very low nicotine content cigarettes (VLNCs) may not be equally effective across heterogeneous smokers. We evaluated the impact of acute VLNC smoking versus control (sham puffs) on craving, withdrawal and smoking lapse behaviour and whether genetically influenced differences in nicotine metabolism and individual differences in nicotine dependence moderate observed effects. Thirty-three overnight-abstinent smokers (15 slow vs. 17 normal nicotine metabolizers; 17 low vs. 16 high nicotine dependence) smoked a 0.05-mg nicotine VLNC during one session and took sham VLNC puffs during another session, in a counterbalanced order. Craving and withdrawal were assessed before and after smoking and sham puffing. Next, participants completed the McKee Smoking Lapse Task, which measures ability to resist smoking and quantity of ad libitum smoking. VLNC (vs. sham) reduced craving and withdrawal, increased ability to resist smoking and reduced ad libitum smoking. VLNC-induced reduction in craving for positive reinforcement was greater in slow (vs. normal) metabolizers. Nicotine metabolism did not moderate any other VLNC responses. High-dependence (vs. low-dependence) participants engaged in greater ad lib smoking across VLNC and sham conditions. Nicotine dependence did not moderate VLNC responses. VLNC reduced craving, withdrawal and smoking lapse behaviour. Individual differences in nicotine metabolism and dependence had a minimal impact on VLNC responses; however, VLNCs were less effective at reducing craving for positive reinforcement among normal (vs. slow) metabolizers. These findings suggest that desirable VLNC effects may extend across heterogeneous groups of smokers.
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Affiliation(s)
- Hera E. Schlagintweit
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto Ontario Canada
| | - Rachel F. Tyndale
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto Ontario Canada
- Department of Pharmacology and Toxicology University of Toronto Toronto Ontario Canada
- Department of Psychiatry University of Toronto Toronto Ontario Canada
| | - Christian S. Hendershot
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto Ontario Canada
- Department of Pharmacology and Toxicology University of Toronto Toronto Ontario Canada
- Department of Psychiatry University of Toronto Toronto Ontario Canada
- Institute for Mental Health Policy Research Centre for Addiction and Mental Health Toronto Ontario Canada
- Department of Psychology University of Toronto Toronto Ontario Canada
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22
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Best LM, Wardell JD, Tyndale RF, McPhee MD, Le Foll B, Kish SJ, Boileau I, Hendershot CS. Association of the Fatty Acid Amide Hydrolase C385A Polymorphism With Alcohol Use Severity and Coping Motives in Heavy‐Drinking Youth. Alcohol Clin Exp Res 2021; 45:507-517. [DOI: 10.1111/acer.14552] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 01/07/2021] [Indexed: 12/13/2022]
Affiliation(s)
- Laura M. Best
- Brain Health Imaging Centre Centre for Addiction and Mental Health Toronto ON Canada
- Institute of Medical Sciences University of Toronto Toronto ON Canada
| | - Jeffrey D. Wardell
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto ON Canada
- Department of Psychiatry University of Toronto Toronto ON Canada
- Institute for Mental Health Policy Research Centre for Addiction and Mental Health Toronto ON Canada
- Department of Psychology York University Toronto ON Canada
| | - Rachel F. Tyndale
- Brain Health Imaging Centre Centre for Addiction and Mental Health Toronto ON Canada
- Institute of Medical Sciences University of Toronto Toronto ON Canada
- Department of Psychiatry University of Toronto Toronto ON Canada
- Department of Pharmacology and Toxicology University of Toronto Toronto ON Canada
| | | | - Bernard Le Foll
- Brain Health Imaging Centre Centre for Addiction and Mental Health Toronto ON Canada
- Institute of Medical Sciences University of Toronto Toronto ON Canada
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto ON Canada
- Department of Psychiatry University of Toronto Toronto ON Canada
- Department of Pharmacology and Toxicology University of Toronto Toronto ON Canada
| | - Stephen J. Kish
- Brain Health Imaging Centre Centre for Addiction and Mental Health Toronto ON Canada
- Institute of Medical Sciences University of Toronto Toronto ON Canada
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto ON Canada
- Department of Psychiatry University of Toronto Toronto ON Canada
- Department of Pharmacology and Toxicology University of Toronto Toronto ON Canada
| | - Isabelle Boileau
- Brain Health Imaging Centre Centre for Addiction and Mental Health Toronto ON Canada
- Institute of Medical Sciences University of Toronto Toronto ON Canada
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto ON Canada
- Department of Psychiatry University of Toronto Toronto ON Canada
| | - Christian S. Hendershot
- Campbell Family Mental Health Research Institute Centre for Addiction and Mental Health Toronto ON Canada
- Department of Psychiatry University of Toronto Toronto ON Canada
- Department of Pharmacology and Toxicology University of Toronto Toronto ON Canada
- Department of Psychology University of Toronto Toronto ON Canada
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23
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Rundle SM, Cunningham JA, Hendershot CS. Implications of addiction diagnosis and addiction beliefs for public stigma: A cross-national experimental study. Drug Alcohol Rev 2021; 40:842-846. [PMID: 33493359 DOI: 10.1111/dar.13244] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 12/04/2020] [Accepted: 12/15/2020] [Indexed: 01/24/2023]
Abstract
INTRODUCTION Stigmatisation of alcohol and other drug (AOD) use disorders poses a significant barrier to treatment access. A review by the World Health Organization concluded that addictive disorders were the most stigmatised health condition. Few studies have examined whether different etiological models of addiction (MOA) have implications for public stigma toward AOD disorders. The current study examined whether beliefs representative of five MOA predict public stigma levels and whether stigma differs for AOD use disorders relative to other health conditions. METHODS Survey data were collected from Canada, the USA and Australia using an online data collection platform. Participants were randomised to one of four vignette manipulations describing an individual with an alcohol use disorder and/or other disorder. Participants' stigma toward the vignette character and beliefs related to five MOA (disease, moral, psychological, sociological, nature) were measured. RESULTS Stigma ratings were significantly higher in the alcohol use disorder condition compared to other conditions. Two MOA accounted for significant variance in stigma ratings, where greater beliefs in the nature and psychological MOA predicted significantly lower levels of stigma toward alcohol use disorder. Contrary to predictions, beliefs in the disease MOA did not relate to lower stigma. Lastly, beliefs in the moral MOA partly accounted for geographical region differences (the USA vs. Canada) in public stigma. DISCUSSION AND CONCLUSIONS The current study provides further experimental support that AOD disorders are more stigmatised than others. Additionally, the findings suggest that MOA may relate differentially to perceived stigma, and that regional variability in such beliefs exists.
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Affiliation(s)
- Samantha M Rundle
- Department of Psychology, University of Toronto, Toronto, Canada.,Centre for Addiction and Mental Health, Toronto, Canada
| | - John A Cunningham
- Department of Psychology, University of Toronto, Toronto, Canada.,Centre for Addiction and Mental Health, Toronto, Canada
| | - Christian S Hendershot
- Department of Psychology, University of Toronto, Toronto, Canada.,Centre for Addiction and Mental Health, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada
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24
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Zaso MJ, Hendershot CS, Wardell JD, Bagby RM, Pollock BG, Quilty LC. Characterizing the role of impaired control over alcohol in associations of impulsive personality traits with alcohol use as a function of depressive disorder. Addict Behav 2021; 112:106633. [PMID: 32949836 DOI: 10.1016/j.addbeh.2020.106633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Revised: 08/24/2020] [Accepted: 08/26/2020] [Indexed: 11/25/2022]
Abstract
Impulsive personality traits have well-documented associations with at-risk drinking, although the role of impaired control over alcohol in these associations requires further study. Additionally, it remains unknown whether such relationships differ in the context of concurrent depressive disorder, which is a priority due to the high rates of mood dysregulation particularly in clinical samples. This project examined associations of impulsivity, impaired control over alcohol, and alcohol use within 201 adult general outpatients recruited from specialty mental health and addictions clinics at a psychiatric hospital. Outpatients completed the Structured Clinical Interview for DSM-IV Patient version (SCID) and assessments of impulsivity, impaired control over alcohol, and alcohol use. Over 35% of outpatients met criteria for a current depressive disorder. Path models supported associations of impulsivity with impaired control over alcohol and, in turn, at-risk drinking that differed significantly as a function of current depression. Among individuals with current depression, greater tendency to act rashly when experiencing negative affect (negative urgency) was associated with more frequent failures to control drinking (failed control) and, in turn, more at-risk drinking. In contrast, among individuals without current depression, greater positive urgency and lower sensation seeking were associated with greater failed control and, in turn, more at-risk drinking. Findings represent an important step toward clarifying the role of impaired control over alcohol in impulsivity and alcohol use associations and suggest divergent associations of negative urgency, positive urgency, and sensation seeking with at-risk drinking across clinical presentations.
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25
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McPhee MD, Keough MT, Rundle S, Heath LM, Wardell JD, Hendershot CS. Depression, Environmental Reward, Coping Motives and Alcohol Consumption During the COVID-19 Pandemic. Front Psychiatry 2020; 11:574676. [PMID: 33192708 PMCID: PMC7661794 DOI: 10.3389/fpsyt.2020.574676] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 09/28/2020] [Indexed: 12/21/2022] Open
Abstract
Background: Increases in the incidence of psychological distress and alcohol use during the COVID-19 pandemic have been predicted. Behavioral theories of depression and alcohol self-medication theories suggest that greater social/environmental constraints and increased psychological distress during COVID-19 could result in increases in depression and drinking to cope with negative affect. The current study had two goals: (1) to examine self-reported changes in alcohol use and related outcomes after the introduction of COVID-19 social distancing requirements, and; (2) to test hypothesized mediation models to explain individual differences in self-reported changes in depression and alcohol use during the early weeks of the COVID-19 pandemic. Methods: Participants (n = 833) were U.S. residents recruited for participation in a single online survey. The cross-sectional survey included questions assessing environmental reward, depression, COVID-19-related distress, drinking motives, and alcohol use outcomes. Outcomes were assessed via retrospective self-report for two timeframes in the single survey: the 30 days prior to state-mandated social distancing ("pre-social-distancing"), and the 30 days after the start of state-mandated social distancing ("post-social-distancing"). Results: Depression severity, coping motives, and some indices of alcohol consumption (e.g., frequency of binge drinking, and frequency of solitary drinking) were significantly greater post-social-distancing relative to pre-social-distancing. Conversely, environmental reward and other drinking motives (social, enhancement, and conformity) were significantly lower post-social distancing compared to pre-social-distancing. Behavioral economic indices (alcohol demand) were variable with regard to change. Mediation analyses suggested a significant indirect effect of reduced environmental reward with drinking quantity/frequency via increased depressive symptoms and coping motives, and a significant indirect effect of COVID-related distress with alcohol quantity/frequency via coping motives for drinking. Discussion: Results provide early cross-sectional evidence regarding the relation of environmental reward, depression, and COVID-19-related psychological distress with alcohol consumption and coping motives during the early weeks of the COVID-19 pandemic. Results are largely consistent with predictions from behavioral theories of depression and alcohol self-medication frameworks. Future research is needed to study prospective associations among these outcomes.
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Affiliation(s)
- Matthew D. McPhee
- Department of Psychology, University of Toronto, Toronto, ON, Canada
| | | | - Samantha Rundle
- Department of Psychology, University of Toronto, Toronto, ON, Canada
| | - Laura M. Heath
- Department of Psychology, University of Toronto, Toronto, ON, Canada
| | - Jeffrey D. Wardell
- Department of Psychology, York University, Toronto, ON, Canada
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Christian S. Hendershot
- Department of Psychology, University of Toronto, Toronto, ON, Canada
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON, Canada
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
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26
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Wardell JD, Kempe T, Rapinda KK, Single A, Bilevicius E, Frohlich JR, Hendershot CS, Keough MT. Drinking to Cope During COVID-19 Pandemic: The Role of External and Internal Factors in Coping Motive Pathways to Alcohol Use, Solitary Drinking, and Alcohol Problems. Alcohol Clin Exp Res 2020; 44:2073-2083. [PMID: 32870516 DOI: 10.1111/acer.14425] [Citation(s) in RCA: 155] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 07/24/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND The COVID-19 pandemic has resulted in massive disruptions to society, to the economy, and to daily life. Some people may turn to alcohol to cope with stress during the pandemic, which may put them at risk for heavy drinking and alcohol-related harms. Research is needed to identify factors that are relevant for coping-motivated drinking during these extraordinary circumstances to inform interventions. This study provides an empirical examination of coping motive pathways to alcohol problems during the early stages of the COVID-19 pandemic. METHODS Participants (N = 320; 54.7% male; mean age of 32 years) were Canadian adult drinkers who completed an online survey assessing work- and home-related factors, psychological factors, and alcohol-related outcomes over the past 30 days, covering a time period beginning within 1 month of the initiation of the COVID-19 emergency response. RESULTS The results of a theory-informed path model showed that having at least 1 child under the age of 18, greater depression, and lower social connectedness each predicted unique variance in past 30-day coping motives, which in turn predicted increased past 30-day alcohol use (controlling for pre-COVID-19 alcohol use reported retrospectively). Income loss was associated with increased alcohol use, and living alone was associated with increased solitary drinking (controlling for pre-COVID-19 levels), but these associations were not mediated by coping motives. Increased alcohol use, increased solitary drinking, and greater coping motives for drinking were all independently associated with past 30-day alcohol problems, and indirect paths to alcohol problems from having children at home, depression, social connectedness, income loss, and living alone were all supported. CONCLUSIONS Findings provide insight into coping-motivated drinking early in the COVID-19 pandemic and highlight the need for longitudinal research to establish longer term outcomes of drinking to cope during the pandemic.
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Affiliation(s)
- Jeffrey D Wardell
- From the Department of Psychology, York University, Toronto, ON, Canada.,Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Tyler Kempe
- Department of Psychology, University of Manitoba, Winnipeg, MB, Canada
| | - Karli K Rapinda
- Department of Psychology, University of Manitoba, Winnipeg, MB, Canada
| | - Alanna Single
- Department of Psychology, University of Manitoba, Winnipeg, MB, Canada
| | - Elena Bilevicius
- Department of Psychology, University of Manitoba, Winnipeg, MB, Canada
| | - Jona R Frohlich
- Department of Psychology, University of Manitoba, Winnipeg, MB, Canada
| | - Christian S Hendershot
- Institute for Mental Health Policy Research and Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Department of Psychology, University of Toronto, Toronto, ON, Canada.,Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Matthew T Keough
- From the Department of Psychology, York University, Toronto, ON, Canada
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27
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Dermody SS, Hendershot CS, Andrade AK, Novalen M, Tyndale RF. Changes in Nicotine Metabolite Ratio Among Daily Smokers Receiving Treatment for Alcohol Use Disorder. Nicotine Tob Res 2020; 22:256-263. [PMID: 30561731 DOI: 10.1093/ntr/nty265] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 12/13/2018] [Indexed: 01/06/2023]
Abstract
INTRODUCTION Alcohol may influence the nicotine metabolite ratio (NMR), an index of the rate of nicotine metabolism that is associated smoking level and lapses. We examined if NMR changes during alcohol use disorder (AUD) treatment and how changes in NMR relate to reductions in drinking. METHODS Using an observational design, 22 daily smokers [63.64% male, Mage = 46.77 (11.37)] receiving AUD treatment completed baseline and follow-up appointments 3 weeks apart. At each appointment, daily alcohol and cigarette use, salivary and urinary NMR, nicotine exposure via urinary total nicotine equivalents, and carbon monoxide were assessed. Multilevel models examined the change over time in NMR and its within-person relations with changes in drinks per week. Sex differences were evaluated. RESULTS There were significant reductions in both salivary and urinary NMR over time for men (p = .02; p = .01, respectively) but not for women (p = .54; p = .90, respectively). There were no changes over time in total nicotine equivalents (p = .09), carbon monoxide (p = .44), or cigarette use (p = .44) in either sex. Drinks per week were significantly reduced for men (29.12 drink reduction, p < .001) but not for women (2.28 drink reduction, p = .80); however, within-person changes in drinking were not associated with changes in salivary or urinary NMR (p = .99; p = .19). CONCLUSIONS The reduction in alcohol use and NMR in men provides indirect support for alcohol increasing NMR. In contrast, the low baseline drinking and lack of alcohol reduction likely underlie the lack of change in NMR in females. Reasons for NMR reductions during AUD treatment and its effects on smoking require further study. IMPLICATIONS Three weeks of alcohol use disorder treatment among daily smokers coincided with a significant reduction in both alcohol use and NMR for men; however, neither drinking level nor NMR changed for women. The findings indirectly support that heavy drinking increases NMR, which is reversed with reduced drinking. Additional research is needed to establish if these changes in NMR correlate with smoking and cessation outcomes.
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Affiliation(s)
- Sarah S Dermody
- School of Psychological Science, Oregon State University, Corvallis, OR
| | - Christian S Hendershot
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Allyson K Andrade
- Department of Psychology, University of Guelph, Guelph, Ontario, Canada
| | - Maria Novalen
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada
| | - Rachel F Tyndale
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada
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28
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Zawertailo L, Hendershot CS, Tyndale RF, Le Foll B, Samokhvalov AV, Thorpe KE, Pipe A, Reid RD, Selby P. Personalized dosing of nicotine replacement therapy versus standard dosing for the treatment of individuals with tobacco dependence: study protocol for a randomized placebo-controlled trial. Trials 2020; 21:592. [PMID: 32600406 PMCID: PMC7325031 DOI: 10.1186/s13063-020-04532-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 06/18/2020] [Indexed: 11/22/2022] Open
Abstract
Background Medications for smoking cessation are currently only effective in helping a minority of smokers quit. Drug development is slow and expensive; as such, there is much interest in optimizing the effectiveness of existing treatments and medications. Current standard doses of nicotine replacement therapy are not effective for many smokers, and in many cases, the amount of nicotine provided is much less than when a smoker is smoking their usual number of cigarettes. The proposed study will test if titrating the dose of the nicotine patch (up to 84 mg) will improve quitting success compared to those receiving a 21-mg nicotine patch with increasing doses of placebo patch. Methods This is a multicenter, pragmatic, two-arm, placebo-controlled, block randomized controlled trial. We will recruit participants who smoke at least 10 cigarettes daily and are interested in making a quit attempt. After 2 weeks of usual treatment with a 21-mg patch, participants who fail to quit smoking (target n = 400) will be randomized to receive escalating doses of a nicotine patch vs matching placebo patches for an additional 10 weeks or up to a maximum dose of 84 mg per day. Those who stop smoking during the first 2 weeks of usual treatment will continue with 21 mg patch treatment for 10 weeks and will form an additional comparison arm. In addition to the medication, participants will receive brief behavioral counseling at each study visit. The primary outcome will be biochemically confirmed continuous abstinence from smoking during the last 4 weeks of treatment (weeks 9 to 12). Discussion Research evidence supporting the effectiveness of personalized doses of nicotine replacement therapy could change current practice in a variety of healthcare settings. Given the evidence that quitting smoking at any age diminishes the risk of tobacco-related morbidity and mortality, even small increases in absolute quit rates can have a substantial population-level impact on reducing smoking-related disease, mortality rates, and associated healthcare costs. Trial registration ClinicalTrials.gov, NCT03000387. Registered on 22 December 2016.
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Affiliation(s)
- Laurie Zawertailo
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, Ontario, M5T 1P7, Canada.,Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Circle, Toronto, M5S 1A8, Canada
| | - Christian S Hendershot
- Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Circle, Toronto, M5S 1A8, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 100 Stokes St., Toronto, Ontario, M6J 1H4, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada.,Department of Psychology, University of Toronto, 100 St. George St., Toronto, Ontario, M5S 3G3, Canada
| | - Rachel F Tyndale
- Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Circle, Toronto, M5S 1A8, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 100 Stokes St., Toronto, Ontario, M6J 1H4, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada
| | - Bernard Le Foll
- Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Circle, Toronto, M5S 1A8, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 100 Stokes St., Toronto, Ontario, M6J 1H4, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada.,Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, Ontario, M5G 1V7, Canada
| | - Andriy V Samokhvalov
- Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada.,Addictions Division, Centre for Addiction and Mental Health, Toronto, Ontario, 100 Stokes St., Toronto, Ontario, M6J 1H4, Canada.,Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St, Toronto, Ontario, M5S 2S1, Canada.,Department of Psychiatry, McMaster University, 100 West 5th, Hamilton, Ontario, L8N 3K7, Canada
| | - Kevin E Thorpe
- Dalla Lana School of Public Health, 155 College St., Toronto, Ontario, M5T 3M7, Canada.,The Applied Health Research Centre, Li Ka Shing Knowledge Institute, St. Michael's Hospital, 250 Yonge St., Toronto, Ontario, M5G 1B1, Canada
| | - Andrew Pipe
- University of Ottawa Heart Institute, 40 Ruskin St., Ottawa, Ontario, K1Y 4W7, Canada
| | - Robert D Reid
- University of Ottawa Heart Institute, 40 Ruskin St., Ottawa, Ontario, K1Y 4W7, Canada
| | - Peter Selby
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, Ontario, M5T 1P7, Canada. .,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 100 Stokes St., Toronto, Ontario, M6J 1H4, Canada. .,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, Ontario, M5T 1R8, Canada. .,Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, Ontario, M5G 1V7, Canada. .,Dalla Lana School of Public Health, 155 College St., Toronto, Ontario, M5T 3M7, Canada.
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Kim J, Hendershot CS. A review of performance indicators of single-item alcohol screening questions in clinical and population settings. J Subst Abuse Treat 2020; 111:73-85. [DOI: 10.1016/j.jsat.2020.01.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 11/30/2022]
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Wardell JD, Cunningham JA, Quilty LC, Carter S, Hendershot CS. Can the AUDIT consumption items distinguish lower severity from high severity patients seeking treatment for alcohol use disorder? J Subst Abuse Treat 2020; 114:108001. [PMID: 32527505 DOI: 10.1016/j.jsat.2020.108001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2019] [Revised: 03/05/2020] [Accepted: 03/18/2020] [Indexed: 11/28/2022]
Abstract
Brief screening tools based on the Alcohol Use Disorders Identification Test (AUDIT) consumption items (e.g., AUDIT-C and AUDIT-3) are commonly used in general medical settings to identify at-risk drinkers who may benefit from alcohol interventions. Conversely, in specialty alcohol treatment settings with a high volume of self-referrals, there may be a need for brief screening tools that can help to identify patients who are unlikely to require intensive treatments, but there has been little research on the use of AUDIT-C or AUDIT-3 in this context. The current study examined the utility of brief screeners comprised of the AUDIT consumption items for distinguishing lower-severity patients from high severity patients in a cohort of individuals self-referring to specialty alcohol treatment. Participants were adults seeking treatment for alcohol problems (N = 853) at a large public psychiatric hospital in Toronto, Canada, who completed the full 10-item AUDIT as part of an initial telephone screening with hospital staff. Results of receiver operating characteristic curve analyses showed that both the AUDIT-C and the AUDIT-3 demonstrated adequate accuracy (area under the curve; AUC > 0.85) for distinguishing lower-severity patients (defined as those in AUDIT zones I, II, and III) from high-severity patients (defined as those in AUDIT zone IV). Exploratory analyses showed that the addition of AUDIT item 4 (impaired control) to the AUDIT-C and AUDIT-3 significantly improved classification accuracy (AUCs = 0.95; ps < .001), and the resulting brief screeners had cut-points with good sensitivity and specificity (i.e., >80%). Results support the potential utility of brief screeners comprised of the AUDIT consumption items for distinguishing lower-severity from high severity individuals seeking specialty alcohol treatment services, which may assist with the initial screening and triage process. The addition of AUDIT item 4 improved the performance of the AUDIT-C and AUDIT-3 in this context. Future research validating these findings against external criteria, including comprehensive diagnostic information, is required.
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Affiliation(s)
- Jeffrey D Wardell
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Department of Psychiatry, University of Toronto, 250 College St., Toronto, Ontario M5T 1R8, Canada
| | - John A Cunningham
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Department of Psychiatry, University of Toronto, 250 College St., Toronto, Ontario M5T 1R8, Canada; Department of Psychology, University of Toronto, 100 St. George Street, Toronto, ON M5S 3G3, Canada
| | - Lena C Quilty
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Department of Psychiatry, University of Toronto, 250 College St., Toronto, Ontario M5T 1R8, Canada
| | - Stephanie Carter
- Centre for Addiction and Mental Health, 1001 Queen St. West, Toronto, Ontario M6J 1H4, Canada
| | - Christian S Hendershot
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada; Department of Psychiatry, University of Toronto, 250 College St., Toronto, Ontario M5T 1R8, Canada; Department of Psychology, University of Toronto, 100 St. George Street, Toronto, ON M5S 3G3, Canada.
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Cunningham JA, Hodgins DC, Keough M, Hendershot CS, Schell C, Godinho A. Online interventions for problem gamblers with and without co-occurring unhealthy alcohol use: Randomized controlled trial. Internet Interv 2020; 19:100307. [PMID: 32042600 PMCID: PMC7000801 DOI: 10.1016/j.invent.2020.100307] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND AND AIMS Problem gambling and unhealthy alcohol use often co-occur. The current trial sought to establish whether adding a brief online intervention for unhealthy alcohol use to an online problem gambling intervention would lead to improvements in gambling and drinking among those with both of these concerns. METHODS Participants were recruited from across Canada using an advertisement targeting those concerned about their gambling who were interested in online help. No mention of unhealthy alcohol use was made in the advertisement. Participants meeting criteria for problem gambling were randomized to either receive just an online intervention for gambling (G-only) or to receive an online gambling intervention plus a brief personalized feedback intervention for unhealthy alcohol use (G + A). Participants were followed up at 3 and 6 months. RESULTS A total of 282 participants were recruited for the trial. Follow-up rates were good (80% and 84% at 3 and 6 months). There were significant reductions in gambling (p < .001) across time but no significant differences (p > .05) between those who received either the G-only or G + A interventions. Further, for those with unhealthy alcohol use (41% of the sample), there were no significant reductions in alcohol consumption (p > .05) across time or differences between condition. DISCUSSION AND CONCLUSION The addition of a brief intervention for unhealthy alcohol use to an online intervention for gambling did not appear to improve either gambling or drinking outcomes among people concerned about their gambling. Further research is merited to examine whether a combined intervention (with gambling and drinking components integrated) might result in improved outcomes and whether such an intervention might benefit the subgroup of participants who would specifically seek help for both gambling and alcohol concerns.Trial registration:ClinicalTrials.govNCT03323606; Registration date: October 24, 2017.
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Affiliation(s)
- John A. Cunningham
- Centre for Addiction and Mental Health, Toronto, Canada
- University of Toronto, Toronto, Canada
- Australian National University, Canberra, Australia
| | | | | | - Christian S. Hendershot
- Centre for Addiction and Mental Health, Toronto, Canada
- University of Toronto, Toronto, Canada
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Hendershot CS, Dermody SS, Wardell JD, Zaso MJ, Kennedy JL, Stoner SA. OPRM1 Moderates Daily Associations of Naltrexone Adherence With Alcohol Consumption: Preliminary Evidence From a Mobile Health Trial. Alcohol Clin Exp Res 2020; 44:983-991. [PMID: 32020635 DOI: 10.1111/acer.14300] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 01/25/2020] [Indexed: 12/30/2022]
Abstract
BACKGROUND Initial evidence that OPRM1 genotype moderates the clinical response to naltrexone has not been replicated in prospective clinical trials. However, the use of traditional statistical analyses and clinical endpoints might limit sensitivity for studying pharmacogenetic associations, whereas the use of intensive daily assessments and person-centered analytic methods might increase sensitivity. This study leveraged person-centered analyses and daily measures of alcohol use, craving, and medication adherence to investigate OPRM1 as a moderator of changes in clinical outcomes during naltrexone treatment. METHODS Treatment-seeking participants with alcohol use disorder (n = 58; Mage = 38 years; 71% male) provided daily cell phone reports of craving and consumption while taking naltrexone as part of a mobile health trial. Daily medication adherence was measured remotely using electronic pill cap recordings. Multilevel modeling and multilevel structural equation modeling analyses evaluated the hypotheses that OPRM1 genotype would moderate prospective reductions in daily alcohol use and craving, and would also moderate within-person associations of daily adherence with same-day craving and consumption. RESULTS OPRM1 genotype moderated the association of daily adherence with reduced same-day consumption (p = 0.007) and craving (p = 0.06), with these associations being stronger for participants with the 118G variant. OPRM1 genotype did not moderate changes in craving and consumption over time. CONCLUSIONS These findings suggest that high-density assessments and person-centered analytic approaches, including modeling within-person variation in medication adherence, could be advantageous for pharmacogenetic studies.
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Affiliation(s)
- Christian S Hendershot
- From the, Campbell Family Mental Health Research Institute, (CSH, JDW, JLK), Centre for Addiction and Mental Health, Toronto, ON, Canada.,Institute for Mental Health Policy Research, (CSH, JDW), Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, (CSH, JDW, JLK), University of Toronto, Toronto, ON, Canada.,Department of Psychology, (CSH), University of Toronto, Toronto, ON, Canada.,Department of Pharmacology and Toxicology, (CSH), University of Toronto, Toronto, ON, Canada
| | - Sarah S Dermody
- School of Psychological Science, (SSD), Oregon State University, Corvallis, Oregon
| | - Jeffrey D Wardell
- From the, Campbell Family Mental Health Research Institute, (CSH, JDW, JLK), Centre for Addiction and Mental Health, Toronto, ON, Canada.,Institute for Mental Health Policy Research, (CSH, JDW), Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, (CSH, JDW, JLK), University of Toronto, Toronto, ON, Canada
| | - Michelle J Zaso
- Clinical and Research Institute on Addictions, (MJZ), University at Buffalo, Buffalo, New York
| | - James L Kennedy
- From the, Campbell Family Mental Health Research Institute, (CSH, JDW, JLK), Centre for Addiction and Mental Health, Toronto, ON, Canada.,Department of Psychiatry, (CSH, JDW, JLK), University of Toronto, Toronto, ON, Canada
| | - Susan A Stoner
- Alcohol and Drug Abuse Institute, (SAS), University of Washington, Seattle, Washington
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Martínez-Loredo V, Hendershot CS, O’Connor RM, Wardell JD. The Prospective Association of Negative Urgency With Hazardous Drinking Via Impaired Control: A Moderating Role of Alcohol Sensitivity. J Stud Alcohol Drugs 2020. [DOI: 10.15288/jsad.2020.81.89] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Victor Martínez-Loredo
- Clinical Unit of Addictive Behaviors, Department of Psychology, University of Oviedo, Asturias, Spain
| | - Christian S. Hendershot
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Roisin M. O’Connor
- Department of Psychology, Concordia University, Montreal, Québec, Canada
| | - Jeffrey D. Wardell
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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Martínez-Loredo V, Hendershot CS, O'Connor RM, Wardell JD. The Prospective Association of Negative Urgency With Hazardous Drinking Via Impaired Control: A Moderating Role of Alcohol Sensitivity. J Stud Alcohol Drugs 2020; 81:89-94. [PMID: 32048606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023] Open
Abstract
OBJECTIVE Trait negative urgency is consistently associated with alcohol problems, and cross-sectional findings have suggested a mediational role of impaired control over alcohol. Initial evidence also suggests that individual differences in self-reported sensitivity to alcohol's effects may moderate the association between urgency and alcohol outcomes. The aim of this study was to replicate and extend these findings using prospective data. METHOD Young adult drinkers (N = 159, mean age = 18.87, SD = 1.16; 70.4% female) from Montreal, Quebec, Canada, completed an online survey at baseline and again 6 months later. Participants completed questionnaires measuring negative urgency, alcohol sensitivity, impaired control over alcohol, and hazardous drinking. RESULTS Moderated mediation analyses revealed that the prospective indirect association between negative urgency at baseline and hazardous drinking at follow-up (mediated via increased impaired control at follow-up) was significant only for young adults who reported relatively lower alcohol sensitivity at baseline. CONCLUSIONS Using prospective data from a unique sample of young adults, the present study partially replicates prior cross-sectional findings suggesting that the indirect association between urgency and hazardous drinking via impaired control over alcohol is moderated by alcohol sensitivity.
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Affiliation(s)
- Victor Martínez-Loredo
- Clinical Unit of Addictive Behaviors, Department of Psychology, University of Oviedo, Asturias, Spain
| | - Christian S Hendershot
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Roisin M O'Connor
- Department of Psychology, Concordia University, Montreal, Québec, Canada
| | - Jeffrey D Wardell
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
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Dermody SS, Wardell JD, Stoner SA, Hendershot CS. Predictors of Daily Adherence to Naltrexone for Alcohol Use Disorder Treatment During a Mobile Health Intervention. Ann Behav Med 2019; 52:787-797. [PMID: 30124761 DOI: 10.1093/abm/kax053] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background Adherence to medications for treating alcohol use disorder (AUD) is poor. To identify predictors of daily naltrexone adherence over time, a secondary data analysis was conducted of a trial evaluating a mobile health intervention to improve adherence. Methods Participants seeking treatment for AUD (n = 58; Mage = 38 years; 71% male) were prescribed naltrexone for 8 weeks. Adherence was tracked using the Medication Event Monitoring System (MEMS). In response to daily text messages, participants reported the previous day's alcohol use, craving, and naltrexone side effects. Using multilevel structural equation modeling (MSEM), we examined baseline dispositional factors and within-person, time-varying factors as predictors of daily adherence. Results Naltrexone adherence decreased over time. Adherence was higher on days when individuals completed daily mobile assessments relative to days when they did not (odds ratio [OR] = 2.53, 95% confidence interval [CI] 1.61 to 3.98), irrespective of intervention condition. Days when individuals drank more than their typical amount were related to lower next-day adherence (OR = 0.93, 95% CI 0.88 to 0.99). A similar pattern was supported for craving (OR = 0.88, 95% CI 0.79 to 0.98). Weekend days were associated with lower adherence than weekdays (OR = 0.71, 95% CI 0.58 to 0.86); this effect was partly mediated by heavier daily drinking (indirect effect = -0.02, 95% CI -0.04 to -0.003) and stronger-than-usual craving (indirect effect = -0.01, 95% CI -0.02 to 0.00) on weekend days. Conclusions The results further demonstrate the need to improve adherence to AUD pharmacotherapy. The present findings also support developing interventions that target daily-level risk factors for nonadherence. Mobile health interventions may be one means of developing tailored and adaptive adherence interventions.
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Affiliation(s)
- Sarah S Dermody
- School of Psychological Science, Oregon State University, Corvallis, USA.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Jeffery D Wardell
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Susan A Stoner
- Alcohol and Drug Abuse Institute, University of Washington, Seattle, WA, USA
| | - Christian S Hendershot
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
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Wardell JD, Shuper PA, Rourke SB, Hendershot CS. Stigma, Coping, and Alcohol Use Severity Among People Living With HIV: A Prospective Analysis of Bidirectional and Mediated Associations. Ann Behav Med 2019; 52:762-772. [PMID: 30124756 DOI: 10.1093/abm/kax050] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background HIV-related stigma is associated with health consequences among people living with HIV, including increased risk for alcohol problems. Theory suggests that maladaptive coping may mediate the relationship between HIV-related stigma and alcohol outcomes, and these variables may be bidirectionally associated over time. However, no studies have examined the temporal relationships among these variables in people living with HIV. Purpose This study examined prospective bidirectional and mediated associations among HIV-related stigma, maladaptive coping, and alcohol use severity in patients enrolled in the Ontario HIV Treatment Network Cohort study. Method Patients receiving care for HIV (N = 1,520) at one of several clinics completed self-report measures annually. Data were analyzed in a four-wave, cross-lagged panel model. Results Greater HIV-related stigma at each wave consistently predicted increased maladaptive coping 1 year later. Similarly, maladaptive coping consistently predicted greater subsequent HIV-related stigma. Further, we observed some evidence that maladaptive coping mediated the prospective associations between HIV-related stigma and alcohol use severity in both directions (i.e., stigma to subsequent alcohol use severity and vice versa) although these associations were not observed across all waves. Conclusion Results suggest that HIV-related stigma and maladaptive coping are bidirectionally associated with one another over time. This study also provides some evidence that coping may be a relevant mediator of these associations, although findings were less consistent for mediated pathways. Future research should examine whether interventions addressing stigma and coping among people living with HIV may help to minimize health risks such as hazardous drinking.
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Affiliation(s)
- Jeffrey D Wardell
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Paul A Shuper
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Sean B Rourke
- Centre for Urban Health Solutions, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, Ontario, Canada.,Ontario HIV Treatment Network, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Christian S Hendershot
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada
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Schlagintweit HE, Lynch MJ, Hendershot CS. A review of behavioral alcohol interventions for transplant candidates and recipients with alcohol-related liver disease. Am J Transplant 2019; 19:2678-2685. [PMID: 31419015 DOI: 10.1111/ajt.15569] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 07/16/2019] [Accepted: 08/06/2019] [Indexed: 01/25/2023]
Abstract
Alcohol-related liver disease (ALD) is a common indication for liver transplantation. Reflecting growing consensus that early transplant (ie, prior to sustained abstinence) can be a viable option for acute alcoholic hepatitis, access to liver transplantation for ALD patients has increased. Prevention of alcohol relapse is critical to pretransplant stabilization and posttransplant survival. Behavioral interventions are a fundamental component of alcohol use disorder treatment, but have rarely been studied in the transplant context. This scoping review summarizes published reports of behavioral and psychosocial alcohol interventions conducted with ALD patients who were liver transplant candidates and/or recipients. A structured review identified 11 eligible reports (3 original research studies, 8 descriptive papers). Intervention characteristics and clinical outcomes were summarized. Interventions varied significantly in orientation, content, delivery format, and timing/duration. Observational findings illustrate the importance of situating alcohol interventions within a multidisciplinary treatment context, and suggest the potential efficacy of cognitive-behavioral and motivational enhancement interventions. However, given extremely limited research evaluating behavioral alcohol interventions among ALD patients, the efficacy of behavioral interventions for pre- and posttransplant alcohol relapse remains to be established.
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Affiliation(s)
- Hera E Schlagintweit
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Marie-Josée Lynch
- Multi-Organ Transplant Program, University Health Network, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Christian S Hendershot
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychology, University of Toronto, Toronto, Ontario, Canada.,Department of Pharmacology and Toxicology, University of Toronto, Toronto, Ontario, Canada
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Minian N, Baliunas D, Noormohamed A, Zawertailo L, Giesbrecht N, Hendershot CS, Le Foll B, Rehm J, Samokhvalov AV, Selby PL. The effect of a clinical decision support system on prompting an intervention for risky alcohol use in a primary care smoking cessation program: a cluster randomized trial. Implement Sci 2019; 14:85. [PMID: 31443663 PMCID: PMC6708174 DOI: 10.1186/s13012-019-0935-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 08/15/2019] [Indexed: 01/31/2023] Open
Abstract
Background Clinical decision support systems (CDSSs) may promote practitioner adherence to evidence-based guidelines. This study examined if the addition of a CDSS influenced practitioner delivery of a brief intervention with treatment-seeking smokers who were drinking above recommended alcohol consumption guidelines, compared with practitioners who do not receive a CDSS prompt. Methods This was a cluster randomized controlled trial conducted in primary health care clinics across Ontario, Canada, implementing the Smoking Treatment for Ontario Patients (STOP) smoking cessation program. Clinics randomized to the intervention group received a prompt when a patient reported consuming alcohol above the Canadian Cancer Society (CCS) guidelines; the control group did not receive computer alerts. The primary outcome was an offer of an appropriate educational alcohol resource, an alcohol reduction workbook for patients drinking above the CCS guidelines, and an abstinence workbook to patients scoring above 20 points in the AUDIT screening tool; the secondary outcome was patient acceptance of the resource. The tertiary outcome was patient abstinence from smoking, and alcohol consumption within CCS guidelines, at 6-month follow-up. Results were analyzed using a generalized estimation approach for fitting logistic regression using a population-averaged method. Results Two hundred and twenty-one clinics across Ontario were randomized for this study; 110 to the intervention arm and 111 to the control arm. From the 15,222 patients that enrolled in the smoking cessation program, 15,150 (99.6% of patients) were screened for alcohol use and 5715 patients were identified as drinking above the CCS guidelines. No statistically significant difference between groups was seen in practitioner offer of an educational alcohol resource to appropriate patients (OR = 1.19, 95% CI 0.88–1.64, p = 0.261) or in patient abstinence from smoking and drinking within the CCS guidelines at 6-month follow-up (OR = 0.93, 95% CI 0.71–1.22, p = 0.594). However, a significantly greater proportion of patients in the intervention group accepted the alcohol resource offered to them by their practitioner (OR = 1.48, 95% CI 1.01–2.16, p = 0.045). Conclusion A CDSS may not increase the likelihood of practitioners offering an educational alcohol resource, though it may have influenced patients’ acceptance of the resource. Trial registration This trial is registered with ClinicalTrials.gov, number NCT03108144, registered on April 11, 2017, “retrospectively registered”. Electronic supplementary material The online version of this article (10.1186/s13012-019-0935-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Nadia Minian
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, ON, M5T1P7, Canada.,Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada
| | - Dolly Baliunas
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, ON, M5T1P7, Canada.,Dalla Lana School of Public Health, University of Toronto, 155 College, Toronto, ON, M5T 3M7, Canada
| | - Aliya Noormohamed
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, ON, M5T1P7, Canada
| | - Laurie Zawertailo
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, ON, M5T1P7, Canada.,Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada
| | - Norman Giesbrecht
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St, Toronto, ON, M5S 2S1, Canada
| | - Christian S Hendershot
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 60 White Squirrel Way, Toronto, ON, M6J 1H4, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada
| | - Bernard Le Foll
- Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada.,Department of Pharmacology and Toxicology, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 1A8, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 60 White Squirrel Way, Toronto, ON, M6J 1H4, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada
| | - Jürgen Rehm
- Dalla Lana School of Public Health, University of Toronto, 155 College, Toronto, ON, M5T 3M7, Canada.,Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St, Toronto, ON, M5S 2S1, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 60 White Squirrel Way, Toronto, ON, M6J 1H4, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada.,Institute of Medical Science, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 3K1, Canada.,Institute for Clinical Psychology and Psychotherapy, TU Dresden, Chemnitzer Str. 46, 01187, Dresden, Germany
| | - Andriy V Samokhvalov
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Russell St, Toronto, ON, M5S 2S1, Canada.,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada.,Institute of Medical Science, University of Toronto, 1 King's College Cir, Toronto, ON, M5S 3K1, Canada
| | - Peter L Selby
- Nicotine Dependence Services, Centre for Addiction and Mental Health, 175 College St, Toronto, ON, M5T1P7, Canada. .,Department of Family and Community Medicine, University of Toronto, 500 University Ave, Toronto, ON, M5G 1V7, Canada. .,Dalla Lana School of Public Health, University of Toronto, 155 College, Toronto, ON, M5T 3M7, Canada. .,Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON, M5T 1R8, Canada.
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Heath LM, Wardell JD, Hendershot CS. An Evaluation of Alcohol Sensitivity in the Context of the Acquired Preparedness Model. Addict Res Theory 2019; 28:335-344. [PMID: 33828442 PMCID: PMC8023335 DOI: 10.1080/16066359.2019.1653862] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 07/17/2019] [Accepted: 08/06/2019] [Indexed: 06/12/2023]
Abstract
BACKGROUND The acquired preparedness model (APM) posits that relationships between impulsivity-related traits and alcohol use are partly mediated by the biased acquisition of positive alcohol expectancies. Additionally, alcohol administration studies implicate associations between impulsivity-related traits and sensitivity to acute alcohol effects, suggesting that impulsivity-expectancy associations could be partly explained by individual differences in alcohol response. The present study assessed a theoretical extension of the APM by testing the prediction that self-reported sensitivity to alcohol would partly mediate impulsivity-expectancy relationships, and that the addition of alcohol sensitivity variables would account for increased variance in drinking quantity and problems relative to the traditional APM. METHOD Young adult heavy drinkers (N = 300, 53% women) completed the Alcohol Sensitivity Questionnaire, the UPPS-P Impulsive Behavior Scale, and measures of alcohol expectancies (Comprehensive Effects of Alcohol Questionnaire) and drinking quantity and related problems. Hypotheses were examined using path analysis. RESULTS Results supported significant indirect effects of sensation seeking on drinking quantity and problems via higher positive expectancies. Results also supported a significant indirect effect of negative urgency on drinking problems via negative expectancies. Although alcohol sensitivity variables showed unique associations with drinking outcomes, the addition of these variables did not improve model fit and hypothesized indirect paths involving impulsivity-related traits, alcohol sensitivity, and expectancies were not supported. CONCLUSIONS Future research is necessary to reconcile these results with laboratory findings suggesting that impulsive traits are frequently associated with sensitivity to alcohol's acute effects.
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Affiliation(s)
- Laura M. Heath
- Department of Psychology, University of Toronto, Toronto, Canada
| | - Jeffrey D. Wardell
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health (CAMH), Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Christian S. Hendershot
- Department of Psychology, University of Toronto, Toronto, Canada
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health (CAMH), Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Campbell Family Mental Health Research Institute, CAMH, Toronto, Canada
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Abstract
Increased access to medicinal and recreational cannabis will be accompanied by greater exposure to its chemical constituents, including Δ9-tetrahydrocannabinol (Δ9-THC) and cannabidiol (CBD), the primary nonpsychoactive compound. Increasing attention has focused on CBD, in part, due to its potential therapeutic properties. Relatively little is known about how CBD might interact with other commonly used drugs. While a number of studies have explored the influence of cannabis or Δ9-THC on alcohol consumption and treatment outcomes, few have examined the effects of CBD on alcohol-related outcomes. This article reviews preclinical and human studies examining the effects of CBD administration on alcohol responses. Preliminary preclinical results suggest that CBD can attenuate alcohol consumption and potentially protect against certain harmful effects of alcohol, such as liver and brain damage. Also reviewed herein are the few existing studies involving CBD and alcohol coadministration in humans. The paucity of such studies precludes any definitive conclusions relating to CBD-alcohol interactions. Effects of CBD on alcohol use and potential therapeutic implications for alcohol use disorder are discussed. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
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Affiliation(s)
- Christina N Nona
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health
| | - Christian S Hendershot
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health
| | - Bernard Le Foll
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health
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Vaughan CL, Stangl BL, Schwandt ML, Corey KM, Hendershot CS, Ramchandani VA. The relationship between impaired control, impulsivity, and alcohol self-administration in nondependent drinkers. Exp Clin Psychopharmacol 2019; 27:236-246. [PMID: 30688502 PMCID: PMC6776085 DOI: 10.1037/pha0000247] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Impaired control over drinking is a significant marker of alcohol use disorder (AUD), and a potential target of intervention (Heather, Tebbutt, Mattick, & Zamir, 1993; Leeman, Toll, Taylor, & Volpicelli, 2009). Impaired control may be related to, but conceptually distinct from, impulsivity (Leeman, Patock-Peckham, & Potenza, 2012; Leeman, Ralevski, et al., 2014). However, the relationship between impaired control, impulsivity, and alcohol consumption, particularly in nondependent drinkers is less clear. This study aimed to characterize these relationships using a free-access intravenous alcohol self-administration (IV-ASA) paradigm in nondependent drinkers (N = 48). Results showed individuals with higher self-reported impaired control achieved higher blood alcohol concentrations (BAC) during the IV-ASA session and reported greater hedonic subjective responses to alcohol. Higher impaired control was also associated with greater positive urgency and reward sensitivity. Moderated-mediation analysis showed that the relationship between positive urgency and peak BAC was mediated by impaired control, and partially moderated by subjective alcohol response. These findings highlight the critical role of impaired control over drinking on alcohol consumption and subjective responses in nondependent drinkers. (PsycINFO Database Record (c) 2019 APA, all rights reserved).
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Affiliation(s)
- Courtney L. Vaughan
- Section on Human Psychopharmacology, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD
| | - Bethany L. Stangl
- Section on Human Psychopharmacology, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD
| | - Melanie L. Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD
| | - Kristin M. Corey
- Section on Human Psychopharmacology, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD
| | - Christian S. Hendershot
- Centre for Addiction and Mental Health, Toronto, Canada,Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Vijay A. Ramchandani
- Section on Human Psychopharmacology, Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, Bethesda, MD
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Quilty LC, Wardell JD, Thiruchselvam T, Keough MT, Hendershot CS. Brief interventions for problem gambling: A meta-analysis. PLoS One 2019; 14:e0214502. [PMID: 30995229 PMCID: PMC6469774 DOI: 10.1371/journal.pone.0214502] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Accepted: 03/14/2019] [Indexed: 01/18/2023] Open
Abstract
Background Brief interventions have been increasingly investigated to promote early intervention in gambling problems; an accurate estimate of the impact of these interventions is required to justify their widespread implementation. The goal of the current investigation was to evaluate the efficacy of in-person brief interventions for reducing gambling behaviour and/or problems, by quantifying the aggregate effect size associated with these interventions in the published literature to date. Methods Randomized controlled trials including the following design features were identified via systematic review: an adult sample experiencing problems associated with gambling; an in-person individual psychosocial intervention of brief duration (≤3 sessions); a control/comparison group; and an outcome related to gambling behaviour and/or problems. Results Five records compared brief interventions to assessment only control; using a random effect model, brief interventions were associated with a small but statistically significant reduction in gambling behaviour across short-term follow-up periods versus assessment only control (g = -.19, 95% CI [-.37, -.01]). Aggregate effect sizes for gambling problems and long-term follow-up periods were not statistically significant. Five records compared brief interventions to longer active interventions; there was no significant difference between brief interventions and longer active interventions. Conclusions Results supported the efficacy of brief interventions for problem gambling compared to inactive control in the reduction of gambling behaviour; no differences were found across brief versus longer interventions for both gambling behaviour and problems. While these findings must be interpreted in the context of the limited number of studies and small magnitude of the combined effect sizes, the current meta-analysis supports the further investigation of the public health impact of these cost-effective interventions.
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Affiliation(s)
- Lena C. Quilty
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
- * E-mail:
| | - Jeffrey D. Wardell
- Department of Psychiatry, University of Toronto, Toronto, Canada
- Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Canada
| | - Thulasi Thiruchselvam
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
| | | | - Christian S. Hendershot
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada
- Department of Psychiatry, University of Toronto, Toronto, Canada
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Lindgren KP, Hendershot CS, Ramirez JJ, Bernat E, Rangel-Gomez M, Peterson KP, Murphy JG. A dual process perspective on advances in cognitive science and alcohol use disorder. Clin Psychol Rev 2019; 69:83-96. [PMID: 29680185 PMCID: PMC6181791 DOI: 10.1016/j.cpr.2018.04.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 04/04/2018] [Accepted: 04/05/2018] [Indexed: 10/17/2022]
Abstract
There is a tremendous global and national (US) burden associated with alcohol misuse and alcohol use disorder (AUD). Further, of the mental health disorders, AUD has the widest treatment gap. Thus, there is a critical need for improved understanding of the etiology, maintenance, and treatment of AUD. The application of cognitive science to the study of AUD has a longstanding history of attempting to meet this need. In this selective review, we identified and focused on four domains of recent (i.e., in the last decade) applications of cognitive science to the study of AUD: implicit cognitive biases, executive function, behavioral economic approaches to alcohol decision making, and functional connectivity neuroimaging. We highlighted advances within these four domains and considered them in the context of dual process models of addiction, which focus on the contribution and interplay of two complementary neurocognitive systems (impulsive and control systems). Findings across the domains were generally consistent with dual process models. They also suggest the need for further model refinements, including integrating behavioral economic approaches and findings from functional connectivity neuroimaging studies. Research evaluating candidate interventions associated with these domains is emergent but promising, suggesting important directions for future research.
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Affiliation(s)
- Kristen P Lindgren
- Department of Psychiatry & Behavioral Sciences, University of Washington, Seattle, WA, USA.
| | - Christian S Hendershot
- Centre for Addiction and Mental Health, Toronto, Ontario, Canada; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Jason J Ramirez
- Department of Psychiatry & Behavioral Sciences, University of Washington, Seattle, WA, USA
| | - Edward Bernat
- Department of Psychology, University of Maryland, College Park, MD, USA
| | | | - Kirsten P Peterson
- Department of Psychiatry & Behavioral Sciences, University of Washington, Seattle, WA, USA
| | - James G Murphy
- Department of Psychology, University of Memphis, Memphis, TN, USA
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44
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Cunningham JA, Hodgins DC, Mackenzie CS, Godinho A, Schell C, Kushnir V, Hendershot CS. Randomized controlled trial of an Internet intervention for problem gambling provided with or without access to an Internet intervention for co-occurring mental health distress. Internet Interv 2019; 17:100239. [PMID: 30906694 PMCID: PMC6411631 DOI: 10.1016/j.invent.2019.100239] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 02/24/2019] [Accepted: 03/01/2019] [Indexed: 11/06/2022] Open
Abstract
BACKGROUND AND AIMS The current randomized controlled trial tested whether there was benefit to providing an online gambling intervention and a separate self-help mental health intervention for anxiety and depression (i.e. MoodGYM) (G + MH), compared to only a gambling intervention (G only) among people with co-occurring gambling problems and mental health distress. The primary outcome of interest was improvement in gambling outcomes. Secondary analyses also tested for the impact of the combined intervention on depression and anxiety outcomes. METHODS Participants who were concerned about their gambling were recruited to help evaluate an online intervention for gamblers. Those who met criteria for problem gambling were randomized to receive either the G only or the G + MH intervention. Participants were also assessed for current mental health distress at baseline, with three quarters (n = 214) reporting significant current distress and form the sample for this study. Participants were followed-up at 3- and 6-months to assess changes in gambling status, and improvements in depression and anxiety. RESULTS Follow-up rates were poor (47% completed at least one follow-up). While there were significant reductions in gambling outcomes, as well as on measures of current depression and anxiety, there was no significant difference in outcomes between participants receiving the G only versus the G + MH intervention. DISCUSSION AND CONCLUSION There does not appear to be a benefit to providing access to an additional online mental health intervention to our online gambling intervention, at least among participants who are concerned about their gambling.Trial registration: ClinicalTrials.govNCT02800096; Registration date: June 14, 2016.
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Affiliation(s)
- John A. Cunningham
- Centre for Addiction and Mental Health, Toronto, Canada,Australian National University, Canberra, Australia,University of Toronto, Toronto, Canada,Corresponding author at: Centre for Addiction and Mental Health, 33 Russell St., Toronto, Ontario M5S 2S1, Canada.
| | | | | | | | | | | | - Christian S. Hendershot
- Centre for Addiction and Mental Health, Toronto, Canada,University of Toronto, Toronto, Canada
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45
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Hendershot CS, Wardell JD, Vandervoort J, McPhee MD, Keough MT, Quilty LC. Randomized trial of working memory training as an adjunct to inpatient substance use disorder treatment. Psychol Addict Behav 2018; 32:861-872. [PMID: 30475014 DOI: 10.1037/adb0000415] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Despite interest in computerized working memory training as a transdiagnostic intervention, little is known about its feasibility and efficacy in addiction treatment settings. This double-blind, randomized controlled trial examined the efficacy of working memory training for improving performance on standardized measures of executive function during inpatient substance use disorder treatment. Secondary outcomes included delay discounting, adherence to cognitive training, and posttreatment relapse. Adults (N = 110) entering inpatient alcohol or drug treatment were randomized to active (adaptive) or control (nonadaptive) training conditions, with up to 25 training sessions spanning inpatient and postdischarge phases. In generalized estimating equation (GEE) analyses, the experimental group showed relatively greater improvements on the primary outcome (digit span performance) based on Time × Treatment interactions in per-protocol (p < .05) and intent-to-treat (p = .07) models. Similar results were observed for one secondary outcome. Lower working memory performance at baseline predicted significantly greater delay discounting; however, no time or treatment effects on discounting were observed. Adherence to cognitive training was generally good during inpatient treatment, but suboptimal overall. These results suggest that implementing cognitive training is feasible in inpatient settings, and that adaptive working memory training can potentially lead to near-transfer effects for select cognitive outcomes. However, further work is necessary to establish training effects on clinical outcomes and to improve adherence in outpatient contexts. (PsycINFO Database Record (c) 2018 APA, all rights reserved).
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46
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McPhee MD, Claus ED, Boileau I, Lee ACH, Graff-Guerrero A, Hendershot CS. Does Family History of Alcohol Use Disorder Relate to Differences in Regional Brain Volumes? A Descriptive Review with New Data. Alcohol Clin Exp Res 2018; 42:2369-2384. [PMID: 30204241 DOI: 10.1111/acer.13882] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 08/28/2018] [Indexed: 01/30/2023]
Abstract
BACKGROUND Differences in regional brain volumes as a function of family history (FH) of alcohol use disorder (AUD) have been reported, and it has been suggested that these differences might index genetic risk for AUD. However, results have been inconsistent. The aims of the current study were (i) to provide an updated descriptive review of the existing literature and (ii) to examine the association of FH with indices of subcortical volumes and cortical thickness in a sample of youth recruited based on FH status. METHODS To address aim 1, a literature search located 15 published studies comprising 1,735 participants. Studies were characterized according to population, analytic methods, regions of interest, and primary findings. To address the second aim, we examined volumetric and cortical thickness in a sample of 69 youth (mean age = 19.71 years, SD = 0.79) recruited based on FH status and matched on drinking variables. Associations of sex and alcohol use with volumetric outcomes were also examined. RESULTS Our descriptive review revealed an inconsistent pattern of results with respect to the presence, direction, and regional specificity of volumetric differences across FH groups. The most consistent finding, significantly smaller amygdala volumes in FH+ participants, was not replicated in all studies. In the current sample of youth, measures of subcortical volumes and cortical thickness did not significantly differ as a function of FH, sex, or their interaction. CONCLUSIONS Evidence for FH group differences in regional brain volumes is inconsistent, and the current study failed to detect any group differences. Further research is needed to confirm the reproducibility of FH group differences and implications for AUD risk.
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Affiliation(s)
- Matthew D McPhee
- Department of Psychology, University of Toronto, Toronto, Canada
| | - Eric D Claus
- Mind Research Network and Lovelace Biomedical and Environmental Research Institute, Albuquerque, New Mexico
| | - Isabelle Boileau
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada
| | - Andy C H Lee
- Department of Psychology, University of Toronto, Toronto, Canada.,Rotman Research Institute, Baycrest Centre for Geriatric Care, Toronto, Canada
| | - Ariel Graff-Guerrero
- Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.,Multimodal Imaging Group, Research Imaging Centre, Centre for Addiction and Mental Health, Toronto, Canada.,Institute of Medical Science, University of Toronto, Toronto, Canada
| | - Christian S Hendershot
- Department of Psychology, University of Toronto, Toronto, Canada.,Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada
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47
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Nona CN, Hendershot CS, Lê AD. Behavioural sensitization to alcohol: Bridging the gap between preclinical research and human models. Pharmacol Biochem Behav 2018; 173:15-26. [DOI: 10.1016/j.pbb.2018.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 07/31/2018] [Accepted: 08/07/2018] [Indexed: 12/28/2022]
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Cunningham JA, Hendershot CS, Kay-Lambkin F, Neighbors C, Griffiths KM, Bennett K, Bennett A, Godinho A, Schell C. Does providing a brief internet intervention for hazardous alcohol use to people seeking online help for depression reduce both alcohol use and depression symptoms among participants with these co-occurring disorders? Study protocol for a randomised controlled trial. BMJ Open 2018; 8:e022412. [PMID: 30030322 PMCID: PMC6059322 DOI: 10.1136/bmjopen-2018-022412] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 05/16/2018] [Accepted: 06/20/2018] [Indexed: 01/26/2023] Open
Abstract
INTRODUCTION Hazardous alcohol consumption is common among people experiencing depression, often acting to exacerbate depressive symptoms. While many people with these co-occurring disorders do not seek face-to-face treatment, they do seek help online. There are effective internet interventions that target hazardous alcohol consumption or depression separately but none that combine these online interventions without the involvement of a therapist. In order to realise the potential of internet interventions, we need to develop an evidence base supporting the efficacy of internet interventions for co-occurring depression and hazardous alcohol use without any therapist involvement. This study aims to evaluate the effects on drinking, and on depressive symptoms, of combining an internet intervention targeting hazardous alcohol consumption with one for depression. METHODS AND ANALYSIS A double blinded, parallel group randomised controlled trial will be used. Participants with current depression who also drink in a hazardous fashion (n=986) will be recruited for a study to 'help improve an online intervention for depression'. Participants will be randomised either to receive an established online intervention for depression (MoodGYM) or to receive MoodGYM plus a brief internet intervention for hazardous alcohol consumption (Check Your Drinking; CYD). Participants will be contacted 3 and 6 months after receiving the interventions to assess changes in drinking and depression symptoms. It is predicted that participants receiving the CYD intervention in addition to MoodGYM will report greater postintervention reductions in alcohol consumption and depressive symptoms compared with those who received MoodGYM only. Hypothesised mediation and moderation effects will also be investigated. Using an intention-to-treat basis for the analyses, the hypotheses will be tested using a generalised linear hypothesis framework, and longitudinal analyses will use either generalised linear mixed modelling or generalised estimating equation approach where appropriate. ETHICS AND DISSEMINATION This research comprises the crucial first steps in developing lower-cost and efficacious internet interventions for people suffering from depression who also drink in a hazardous fashion-promoting the widespread availability of care for those in need. This study has been approved by the standing ethics review committee of the Centre for Addiction and Mental Health, and findings will be disseminated in the form of at least one peer-reviewed article and presentations at conferences. TRIAL REGISTRATION NUMBER NCT03421080; Pre-results.
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Affiliation(s)
- John A Cunningham
- Institute of Mental Health and Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
- Research School of Public Health, Austalian National University, Canberra, Australian Capital Territory, Australia
| | - Christian S Hendershot
- Institute of Mental Health and Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Frances Kay-Lambkin
- School of Medicine and Public Health, University of Newcastle, Newcastle, New South Wales, Australia
| | - Clayton Neighbors
- Department of Psychology, University of Houston, Houston, Texas, USA
| | - Kathleen M Griffiths
- Research School of Public Health, Austalian National University, Canberra, Australian Capital Territory, Australia
| | - Kylie Bennett
- eHub Health Pty Ltd, Canberra, Australian Capital Territory, Australia
| | - Anthony Bennett
- eHub Health Pty Ltd, Canberra, Australian Capital Territory, Australia
| | - Alexandra Godinho
- Institute of Mental Health and Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
- Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada
| | - Christina Schell
- Institute of Mental Health and Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
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Cunningham JA, Hodgins DC, Keough M, Hendershot CS, Bennett K, Bennett A, Godinho A. Online interventions for problem gamblers with and without co-occurring problem drinking: study protocol of a randomized controlled trial. Trials 2018; 19:295. [PMID: 29801520 PMCID: PMC5970494 DOI: 10.1186/s13063-018-2672-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 05/04/2018] [Indexed: 12/26/2022] Open
Abstract
Background The current randomized controlled trial seeks to evaluate whether providing access to an Internet intervention for problem drinking in addition to an Internet intervention for problem gambling is beneficial for participants with gambling problems who do or do not have co-occurring problem drinking. Methods Potential participants will be recruited online via a comprehensive advertisement strategy, if they meet the criteria for problem gambling. As part of the baseline measures, problem drinking will also be assessed. Eligible participants (N = 280) who agree to partake in the study and to be followed up for 6 months will be randomized into one of two versions of an Internet intervention for gamblers: an intervention that targets only gambling issues (G-only) and one that combines a gambling intervention with an intervention for problem drinking (G + A). For problem gamblers who exhibit co-occurring problem drinking, it is predicted that participants who are provided access to the G + A intervention will demonstrate a significantly greater level of reduction in gambling outcomes at 6 months compared to those provided access to the G-only intervention. Discussion This trial will expand upon the current research on Internet interventions for addictions and inform the development of treatments for those with co-occurring problem drinking and gambling. Trial Registration ClinicalTrials.gov, NCT03323606. Registered on 24 October 2017. Electronic supplementary material The online version of this article (10.1186/s13063-018-2672-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- John A Cunningham
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada. .,Department of Psychiatry, University of Toronto, Toronto, Canada. .,Austalian National University, Canberra, Australia.
| | - David C Hodgins
- Department of Psychology, University of Calgary, Calgary, Canada
| | - Matthew Keough
- Department of Psychology, University of Manitoba, Winnipeg, Canada
| | - Christian S Hendershot
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada.,Department of Psychiatry, University of Toronto, Toronto, Canada
| | | | | | - Alexandra Godinho
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada.,Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
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50
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Cunningham JA, Shorter GW, Murphy M, Kushnir V, Rehm J, Hendershot CS. Randomized Controlled Trial of a Brief Versus Extended Internet Intervention for Problem Drinkers. Int J Behav Med 2018; 24:760-767. [PMID: 27770293 PMCID: PMC5608868 DOI: 10.1007/s12529-016-9604-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Purpose Brief Internet interventions have been shown to reduce alcohol consumption. This trial intended to compare the effects of one such brief intervention to an extended Internet intervention for problem drinkers. Method Using online advertising, 490 participants, 18 years or older, were recruited and randomized to receive a brief (CheckYourDrinking.net) versus an extended (AlcoholHelpCentre.net) Internet intervention and were followed up at 6, 12, and 24 months. The per protocol primary analysis assessed difference between condition at the 12-month follow-up. Results The follow-up rate at 12 months was 83.3 %. ANCOVAs of the primary (Alcohol Use Disorder Identification Test (AUDIT)-C) and secondary outcome variables (drinks in a typical week, highest number of drinks on one occasion—baseline drinking as covariate) revealed no significant (p > 0.05) differences between the interventions. Similarly, combined analyses of the 6-, 12-, and 24-month follow-up revealed no significant differences between interventions at all time points. Conclusion The present study does not provide support for the added benefit of an extended Internet intervention for problem drinkers over a brief Internet intervention.
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Affiliation(s)
- John A Cunningham
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada.
- Australian National University, Canberra, Australia.
- University of Toronto, Toronto, ON, Canada.
| | - Gillian W Shorter
- Australian National University, Canberra, Australia
- Ulster University, Coleraine, UK
- Inspire, Belfast, UK
- Teesside University, Middlesbrough, UK
| | - Michelle Murphy
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada
| | - Vladyslav Kushnir
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada
- University of Toronto, Toronto, ON, Canada
| | - Jürgen Rehm
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada
- University of Toronto, Toronto, ON, Canada
- Technische Universität, Dresden, Germany
| | - Christian S Hendershot
- Centre for Addiction and Mental Health, 33 Russell St., Toronto, ON, M5S 2S1, Canada
- University of Toronto, Toronto, ON, Canada
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