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Whitehurst LN, Morehouse A, Mednick SC. Can stimulants make you smarter, despite stealing your sleep? Trends Cogn Sci 2024:S1364-6613(24)00102-5. [PMID: 38763802 DOI: 10.1016/j.tics.2024.04.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 05/21/2024]
Abstract
Nonmedical use of psychostimulants for cognitive enhancement is widespread and growing in neurotypical individuals, despite mixed scientific evidence of their effectiveness. Sleep benefits cognition, yet the interaction between stimulants, sleep, and cognition in neurotypical adults has received little attention. We propose that one effect of psychostimulants, namely decreased sleep, may play an important and unconsidered role in the effect of stimulants on cognition. We discuss the role of sleep in cognition, the alerting effects of stimulants in the context of sleep loss, and the conflicting findings of stimulants for complex cognitive processes. Finally, we hypothesize that sleep may be one unconsidered factor in the mythology of stimulants as cognitive enhancers and propose a methodological approach to systematically assess this relation.
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Affiliation(s)
- Lauren N Whitehurst
- Department of Psychology, University of Kentucky, Lexington, KY, USA, 40508.
| | - Allison Morehouse
- Department of Cognitive Science, University of California, Irvine, Irvine, CA, USA, 92617
| | - Sara C Mednick
- Department of Cognitive Science, University of California, Irvine, Irvine, CA, USA, 92617.
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McCarthy DM, Spencer TJ, Bhide PG. Preclinical Models of Attention Deficit Hyperactivity Disorder: Neurobiology, Drug Discovery, and Beyond. J Atten Disord 2024; 28:880-894. [PMID: 38084074 DOI: 10.1177/10870547231215286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
OBJECTIVE We offer an overview of ADHD research using mouse models of nicotine exposure. METHOD Nicotine exposure of C57BL/6 or Swiss Webster mice occurred during prenatal period only or during the prenatal and the pre-weaning periods. Behavioral, neuroanatomical and neurotransmitter assays were used to investigate neurobiological mechanisms of ADHD and discover candidate ADHD medications. RESULTS Our studies show that norbinaltorphimine, a selective kappa opioid receptor antagonist is a candidate novel non-stimulant ADHD treatment and that a combination of methylphenidate and naltrexone has abuse deterrent potential with therapeutic benefits for ADHD. Other studies showed transgenerational transmission of ADHD-associated behavioral traits and demonstrated that interactions between untreated ADHD and repeated mild traumatic brain injury produced behavioral traits not associated with either condition alone. CONCLUSION Preclinical models contribute to novel insights into ADHD neurobiology and are valuable tools for drug discovery and translation to benefit humans with ADHD.
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Affiliation(s)
| | - Thomas J Spencer
- Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
| | - Pradeep G Bhide
- Florida State University College of Medicine, Tallahassee, FL, USA
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Looby A, Piccorelli AV, Zimmerman L, Falco C, Livingston NR, Akin C, Benton S, Juliano LM. Expectancy for Adderall influences subjective mood and drug effects regardless of concurrent caffeine ingestion: A randomized controlled trial. Psychopharmacology (Berl) 2024; 241:109-118. [PMID: 37740001 DOI: 10.1007/s00213-023-06467-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/07/2023] [Indexed: 09/24/2023]
Abstract
RATIONALE Nonmedical prescription stimulant use (NPS; use without a prescription or in ways other than prescribed) is common among college students. Despite the potential for negative consequences, students continue engaging in NPS for cognitive enhancement purposes, which may be maintained by expectancy and placebo effects. OBJECTIVES This study examined if a placebo administered under the guise of Adderall influenced subjective mood/drug effects and cognitive performance. Furthermore, this study examined if concurrent caffeine ingestion incrementally enhanced Adderall-related placebo effects. METHODS Undergraduate students with features that put them at elevated risk for NPS (N = 121) completed measures of mood and drug effects and cognitive assessments on two separate laboratory visits in this parallel randomized controlled trial. Visit 1 was a baseline control visit, on which no drug was expected or received. On visit 2, subjects were randomized to: (1) expect/receive no drug (control); (2) expect Adderall/receive placebo; or (3) expect Adderall/receive 200 mg caffeine. RESULTS There were several significant condition × visit interactions for subjective effects, including amphetamine effects, energy and efficiency effects, and feeling high. In most cases, participants who expected Adderall reported greater positive subjective effects on visit 2 compared to controls; however, there were generally not incremental enhancements for those ingesting caffeine compared to placebo. There were no significant effects for any cognitive tests. CONCLUSIONS Expectation for prescription stimulant effects influenced subjective outcomes in a sample of high-risk college students. These findings may inform expectancy challenge interventions to reduce NPS. TRIAL REGISTRATION ClinicalTrials.gov Identifier: NCT03648684.
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Affiliation(s)
- Alison Looby
- Department of Psychology, University of Wyoming, 1000 E. University Ave, Department 3415, Laramie, WY, 82071, USA.
| | - Annalisa V Piccorelli
- Kaiser Permanente Washington Health Research Institute, Biostatistics Division, 1730 Minor Avenue, Ste 1600, Seattle, WA, 98101, USA
| | - Lauren Zimmerman
- Department of Psychology, University of Wyoming, 1000 E. University Ave, Department 3415, Laramie, WY, 82071, USA
| | - Caitlin Falco
- Department of Psychology, University of Wyoming, 1000 E. University Ave, Department 3415, Laramie, WY, 82071, USA
| | - Nicholas R Livingston
- Department of Psychology, University of Wyoming, 1000 E. University Ave, Department 3415, Laramie, WY, 82071, USA
| | - Cody Akin
- Department of Psychology, University of Wyoming, 1000 E. University Ave, Department 3415, Laramie, WY, 82071, USA
| | - Samuel Benton
- Department of Psychology, University of Wyoming, 1000 E. University Ave, Department 3415, Laramie, WY, 82071, USA
| | - Laura M Juliano
- Department of Psychology, American University, 4400 Massachusetts Avenue NW, Washington, DC, 20016, USA
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Dash GF, Gizer IR, Martin NG, Slutske WS. Specificity in genetic and environmental risk for prescription opioid misuse and heroin use. Psychol Med 2023; 53:1-10. [PMID: 36946318 PMCID: PMC10514228 DOI: 10.1017/s003329172300034x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/23/2023] [Accepted: 02/01/2023] [Indexed: 03/23/2023]
Abstract
BACKGROUND Many studies aggregate prescription opioid misuse (POM) and heroin use into a single phenotype, but emerging evidence suggests that their genetic and environmental influences may be partially distinct. METHODS In total, 7164 individual twins (84.12% complete pairs; 59.81% female; mean age = 30.58 years) from the Australian Twin Registry reported their lifetime misuse of prescription opioids, stimulants, and sedatives, and lifetime use of heroin, cannabis, cocaine/crack, illicit stimulants, hallucinogens, inhalants, solvents, and dissociatives via telephone interview. Independent pathway models (IPMs) and common pathway models (CPMs) partitioned the variance of drug use phenotypes into general and drug-specific genetic (a), common environmental (c), and unique environmental factors (e). RESULTS An IPM with one general a and one general e factor and a one-factor CPM provided comparable fit to the data. General factors accounted for 55% (a = 14%, e = 41%) and 79% (a = 64%, e = 15%) of the respective variation in POM and heroin use in the IPM, and 25% (a = 12%, c = 8%, e = 5%) and 80% (a = 38%, c = 27%, e = 15%) of the respective variation in POM and heroin use in the CPM. Across both models, POM emerged with substantial drug-specific genetic influence (26-39% of total phenotypic variance; 69-74% of genetic variance); heroin use did not (0% of total phenotypic variance; 0% of genetic variance in both models). Prescription sedative misuse also demonstrated significant drug-specific genetic variance. CONCLUSIONS Genetic variation in POM, but not heroin use, is predominantly drug-specific. Misuse of prescription medications that reduce experiences of subjective distress may be partially influenced by sources of genetic variation separate from illicit drug use.
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Affiliation(s)
- Genevieve F. Dash
- Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Ian R. Gizer
- Department of Psychological Sciences, University of Missouri, Columbia, MO 65211, USA
| | | | - Wendy S. Slutske
- Department of Family Medicine and Community Health and Center for Tobacco Research and Intervention, University of Wisconsin, Madison, WI 53711, USA
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Mitchell HG, King SA, Ginley MK, Foster KN, Hagemeier NE, Sevak RJ. Motives for nonmedical use of prescription stimulants in community college students. JOURNAL OF AMERICAN COLLEGE HEALTH : J OF ACH 2023:1-8. [PMID: 36862548 DOI: 10.1080/07448481.2023.2180997] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 01/03/2023] [Accepted: 02/10/2023] [Indexed: 06/18/2023]
Abstract
Objective: The present study identified common motives for nonmedical use of prescription stimulants (NMUS) among community college (CC) students and examined behavioral and demographic correlates of certain motives. Participants: The survey was completed by 3,113 CC students (72.4% female; 81.7% White). Methods: Survey results from 10 CCs were evaluated. Results: NMUS was reported by 9% (n = 269) participants. The most common motive for NMUS was to "focus on studies or to improve academic performance" (67.5%) followed by to "have more energy" (52.4%). Females were more likely to report NMUS for weight loss, and males were more likely to report NMUS to experiment. The motive "to feel good or get high" was linked to polysubstance use. Conclusions: CC students report similar motives for NMUS to those commonly endorsed by 4-year university students. These findings may help identify CC students susceptible to risky substance use.
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Affiliation(s)
- Hannah G Mitchell
- Department of Psychology, College of Arts & Sciences, East Tennessee State University, Johnson City, Tennessee, USA
| | - Shelby A King
- Department of Psychology, College of Arts & Sciences, East Tennessee State University, Johnson City, Tennessee, USA
| | - Meredith K Ginley
- Department of Psychology, College of Arts & Sciences, East Tennessee State University, Johnson City, Tennessee, USA
| | - Kelly N Foster
- Department of Sociology and Anthropology, College of Arts & Sciences, East Tennessee State University, Johnson City, Tennessee, USA
| | - Nicholas E Hagemeier
- Department of Pharmacy Practice, Bill Gatton College of Pharmacy, East Tennessee State University, Johnson City, Tennessee, USA
| | - Rajkumar J Sevak
- Department of Pharmacy Practice, Bill Gatton College of Pharmacy, East Tennessee State University, Johnson City, Tennessee, USA
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Singh N, Varshney U. Adaptive interventions for opioid prescription management and consumption monitoring. J Am Med Inform Assoc 2023; 30:511-528. [PMID: 36562638 PMCID: PMC9933075 DOI: 10.1093/jamia/ocac253] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 12/05/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022] Open
Abstract
OBJECTIVES While opioid addiction, treatment, and recovery are receiving attention, not much has been done on adaptive interventions to prevent opioid use disorder (OUD). To address this, we identify opioid prescription and opioid consumption as promising targets for adaptive interventions and present a design framework. MATERIALS AND METHODS Using the framework, we designed Smart Prescription Management (SPM) and Smart Consumption Monitoring (SCM) interventions. The interventions are evaluated using analytical modeling and secondary data on doctor shopping, opioid overdose, prescription quality, and cost components. RESULTS SPM was most effective (30-90% improvement, for example, prescriptions reduced from 18 to 1.8 per patient) for extensive doctor shopping and reduced overdose events and mortality. Opioid adherence was improved and the likelihood of addiction declined (10-30%) as the response rate to SCM was increased. There is the potential for significant incentives ($2267-$3237) to be offered for addressing severe OUD. DISCUSSION The framework and designed interventions adapt to changing needs and conditions of the patients to become an important part of global efforts in preventing OUD. To the best of our knowledge, this is the first paper on adaptive interventions for preventing OUD by addressing both prescription and consumption. CONCLUSION SPM and SCM improved opioid prescription and consumption while reducing the risk of opioid addiction. These interventions will assist in better prescription decisions and in managing opioid consumption leading to desirable outcomes. The interventions can be extended to other substance use disorders and to study complex scenarios of prescription and nonprescription opioids in clinical studies.
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Affiliation(s)
- Neetu Singh
- Department of Management Information Systems, University of Illinois Springfield, Springfield, Illinois, USA
| | - Upkar Varshney
- Department of Computer Information Systems, Georgia State University, Atlanta, Georgia, USA
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Psychosocial aspects of sports medicine in pediatric athletes: Current concepts in the 21 st century. Dis Mon 2022:101482. [PMID: 36100481 DOI: 10.1016/j.disamonth.2022.101482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Behavioral aspects of organized sports activity for pediatric athletes are considered in a world consumed with winning at all costs. In the first part of this treatise, we deal with a number of themes faced by our children in their sports play. These concepts include the lure of sports, sports attrition, the mental health of pediatric athletes (i.e., effects of stress, anxiety, depression, suicide in athletes, ADHD and stimulants, coping with injuries, drug use, and eating disorders), violence in sports (i.e., concepts of the abused athlete including sexual abuse), dealing with supervisors (i.e., coaches, parents), peers, the talented athlete, early sports specialization and sports clubs. In the second part of this discussion, we cover ergolytic agents consumed by young athletes in attempts to win at all costs. Sports doping agents covered include anabolic steroids (anabolic-androgenic steroids or AAS), androstenedione, dehydroepiandrostenedione (DHEA), human growth hormone (hGH; also its human recombinant homologue: rhGH), clenbuterol, creatine, gamma hydroxybutyrate (GHB), amphetamines, caffeine and ephedrine. Also considered are blood doping that includes erythropoietin (EPO) and concepts of gene doping. In the last section of this discussion, we look at disabled pediatric athletes that include such concepts as athletes with spinal cord injuries (SCIs), myelomeningocele, cerebral palsy, wheelchair athletes, and amputee athletes; also covered are pediatric athletes with visual impairment, deafness, and those with intellectual disability including Down syndrome. In addition, concepts of autonomic dysreflexia, boosting and atlantoaxial instability are emphasized. We conclude that clinicians and society should protect our precious pediatric athletes who face many challenges in their involvement with organized sports in a world obsessed with winning. There is much we can do to help our young athletes find benefit from sports play while avoiding or blunting negative consequences of organized sport activities.
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Sabbe M, Sawchik J, Gräfe M, Wuillaume F, De Bruyn S, Van Antwerpen P, Van Hal G, Desseilles M, Hamdani J, Malonne H. Use and misuse of prescription stimulants by university students: a cross-sectional survey in the french-speaking community of Belgium, 2018. Arch Public Health 2022; 80:54. [PMID: 35168683 PMCID: PMC8848864 DOI: 10.1186/s13690-022-00816-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/05/2022] [Indexed: 12/05/2022] Open
Abstract
Background Misuse of prescription stimulants (PS) has been reported among students to enhance academic performance in Flanders (Belgium). However, PS misuse among students in the French-speaking community is unknown. The main purpose of the study was to estimate the prevalence of medical use and misuse of PS by university students in the French-speaking community (Belgium), and to investigate the reasons and sources associated with PS misuse. Methods A cross-sectional online survey was performed in 2018. All university students 18 years and older were invited to participate and asked about PS use, including medical (i.e., used for therapeutic purposes) and nonmedical reasons and sources of PS. Results In total, 12 144 students participated in the survey (median age = 21 years, 65.5% female). The estimated prevalence of PS use was 6.9% (ever use) and 5.5% (past-year). Among ever users, 34.7% were classified as medical users and 65.3% as misusers. Lifetime prevalence of misuse was estimated at 4.5%. The most common reason for medical use was treatment of attention disorder (85.9%). Reasons for misuse were mainly to improve concentration (76.1%) or to stay awake and study longer (50.7%). Friends or acquaintances inside the student community and general practitioners were the main sources of PS for misuse (41.5% and 23.5%, respectively). Conclusions This study found that rates of misuse of PS in French-speaking universities in Belgium were in line with studies conducted in Flanders and Europe. Academic institutions can use these results to tailor their drug prevention campaigns.
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Affiliation(s)
- Martine Sabbe
- Scientific Directorate of Epidemiology and public health - Sciensano, Brussels, Belgium. .,DG Post authorisation - Federal Agency for Medicines and Health Products, Brussels, Belgium.
| | - Javier Sawchik
- DG Post authorisation - Federal Agency for Medicines and Health Products, Brussels, Belgium
| | - Mégane Gräfe
- Unit of Pharmacology, Pharmacotherapy and Pharmaceutical Care, Faculty of Pharmacy, Université libre de Bruxelles, Brussels, Belgium
| | - Françoise Wuillaume
- DG Post authorisation - Federal Agency for Medicines and Health Products, Brussels, Belgium
| | - Sara De Bruyn
- Department of Sociology, University of Antwerp, Antwerp, Belgium
| | - Pierre Van Antwerpen
- RD3-Pharmacognosy, Bioanalysis and Drug Discovery- Faculty of Pharmacy, Université libre de Bruxelles, Brussels, Belgium
| | - Guido Van Hal
- Unit of Epidemiology and Social Medicine, University of Antwerp, Antwerp, Belgium
| | | | - Jamila Hamdani
- DG Post authorisation - Federal Agency for Medicines and Health Products, Brussels, Belgium
| | - Hugues Malonne
- DG Post authorisation - Federal Agency for Medicines and Health Products, Brussels, Belgium.,Unit of Pharmacology, Pharmacotherapy and Pharmaceutical Care, Faculty of Pharmacy, Université libre de Bruxelles, Brussels, Belgium.,Department of Biomedical Sciences, Namur Research Institute for Life Sciences, University of Namur, Namur, Belgium
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McCarthy DM, Zhang L, Wilkes BJ, Vaillancourt DE, Biederman J, Bhide PG. Nicotine and the developing brain: Insights from preclinical models. Pharmacol Biochem Behav 2022; 214:173355. [DOI: 10.1016/j.pbb.2022.173355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 02/08/2022] [Accepted: 02/09/2022] [Indexed: 11/26/2022]
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