1
|
Czuczman C, Thompson M, Wileyto EP, Schnoll R, Metzger D, Leone F, Mounzer K, Gross R, Ashare RL. No differences in delay discounting between smokers with and without HIV. Psychopharmacology (Berl) 2021; 238:529-537. [PMID: 33180174 PMCID: PMC7855959 DOI: 10.1007/s00213-020-05701-x] [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: 04/08/2020] [Accepted: 10/30/2020] [Indexed: 10/23/2022]
Abstract
RATIONALE People with HIV (PWH) smoke cigarettes at much higher rates than the general population and evidence-based cessation methods are less effective, putting PWH at greater risk for negative health outcomes. It is critical to identify the factors that underlie this health disparity. Delay discounting-the decline in the value of a reward when it is delayed-may explain this disparity. OBJECTIVES This study aimed to (1) compare delay discounting between adult smokers with HIV and without HIV and (2) evaluate whether acute smoking abstinence disproportionately increases delay discounting among smokers with HIV. METHODS This sub-study was part of a larger study (NCT03169101) examining predictors of smoking cessation outcomes among smokers with HIV (n = 34) and smokers without HIV (n = 46) at two counterbalanced laboratory sessions (once smoking-as-usual and once following 24-h biochemically confirmed abstinence) then again, after 8 weeks of smoking cessation treatment. RESULTS There were no significant differences in delay discounting rates between HIV status groups (p = 0.49) or within-subject abstinence effects (p = 0.70). However, smokers without HIV exhibited a significant increase in delay discounting following smoking cessation treatment compared to baseline (p = 0.02), whereas the change among smokers with HIV did not reach statistical significance (p = 0.09). CONCLUSIONS These findings do not support differences in delay discounting as a reason for the lower success rates of HIV+ smokers at quitting. Although delay discounting may not explain the disparity in smoking rates between people with and without HIV, future work should focus on additional correlates of higher smoking rates and lower quit rates among people with HIV.
Collapse
Affiliation(s)
- Cory Czuczman
- Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Suite, Philadelphia, PA, 4100, USA
| | - Morgan Thompson
- Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Suite, Philadelphia, PA, 4100, USA
| | - E Paul Wileyto
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA, USA
| | - Robert Schnoll
- Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Suite, Philadelphia, PA, 4100, USA
- Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA, USA
| | - David Metzger
- Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Suite, Philadelphia, PA, 4100, USA
| | - Frank Leone
- Pulmonary, Allergy, and Critical Care Division, University of Pennsylvania Presbyterian Medical Center, 51 N. 39th Street, Philadelphia, PA, USA
| | - Karam Mounzer
- Philadelphia FIGHT, 1233 Locust St., Philadelphia, PA, USA
| | - Robert Gross
- Department of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Department Biostatistics, Epidemiology and Informatics, University of Pennsylvania, Philadelphia, PA, USA
| | - Rebecca L Ashare
- Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Suite, Philadelphia, PA, 4100, USA.
| |
Collapse
|
4
|
McCready H, Kohno M, Kolessar M, Dennis L, Kriz D, Luber H, Anderson R, Chang M, Sasaki A, Flora K, Vandenbark A, Mitchell SH, Loftis JM, Hoffman WF, Huckans M. Functional MRI and delay discounting in patients infected with hepatitis C. J Neurovirol 2018; 24:738-751. [PMID: 30298201 PMCID: PMC6279508 DOI: 10.1007/s13365-018-0670-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 04/23/2018] [Accepted: 08/15/2018] [Indexed: 02/06/2023]
Abstract
Hepatitis C virus-infected (HCV+) adults evidence increased rates of psychiatric and cognitive difficulties. This is the first study to use functional magnetic resonance imaging (fMRI) to examine brain activation in untreated HCV+ adults. To determine whether, relative to non-infected controls (CTLs), HCV+ adults exhibit differences in brain activation during a delay discounting task (DDT), a measure of one's tendency to choose smaller immediate rewards over larger delayed rewards-one aspect of impulsivity. Twenty adults with HCV and 26 CTLs completed an fMRI protocol during the DDT. Mixed effects regression analyses of hard versus easy trials of the DDT showed that, compared with CTLs, the HCV+ group exhibited less activation in the left lateral occipital gyrus, precuneus, and superior frontal gyrus. There were also significant interactive effects for hard-easy contrasts in the bilateral medial frontal gyrus, left insula, left precuneus, left inferior parietal lobule, and right temporal occipital gyrus; the CTL group evidenced a positive relationship between impulsivity and activation, while the HCV+ group exhibited a negative relationship. Within the HCV+ group, those with high viral load chose immediate rewards more often than those with low viral load, regardless of choice difficulty; those with low viral load chose immediate rewards more often on hard choices relative to easy choices. Results show that HCV+ patients exhibit greater impulsive behavior when presented with difficult choices, and impulsivity is negatively related to activation in regions important for cognitive control. Thus, interventions that decrease impulsive choice may be warranted with some HCV+ patients.
Collapse
Affiliation(s)
- Holly McCready
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of Behavioral Neuroscience, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Milky Kohno
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of Behavioral Neuroscience, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Michael Kolessar
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of PM&R and Psychiatry, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Laura Dennis
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of Behavioral Neuroscience, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Daniel Kriz
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - Hannah Luber
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - Renee Anderson
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - Michael Chang
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- The Northwest Hepatitis C Resource Center, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - Anna Sasaki
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- The Northwest Hepatitis C Resource Center, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - Kenneth Flora
- Department of Gastroenterology, The Oregon Clinic, Portland, OR, USA
| | - Arthur Vandenbark
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of Neurology, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Molecular Microbiology and Immunology, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Suzanne H Mitchell
- Department of Behavioral Neuroscience, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Oregon Institute of Occupational Health Sciences, School of Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Jennifer M Loftis
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- The Northwest Hepatitis C Resource Center, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - William F Hoffman
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
- Department of Behavioral Neuroscience, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA
- Behavioral Health & Clinical Neurosciences Division, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA
| | - Marilyn Huckans
- Research and Development, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA.
- Department of Psychiatry, School of Medicine, Oregon Health and Science University, Portland, OR, USA.
- The Northwest Hepatitis C Resource Center, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA.
- Behavioral Health & Clinical Neurosciences Division, VA Portland Health Care System, 3710 SW US Veteran's Hospital Road, Portland, OR, 97239, USA.
| |
Collapse
|
6
|
Scherbaum S, Haber P, Morley K, Underhill D, Moustafa AA. Biased and less sensitive: A gamified approach to delay discounting in heroin addiction. J Clin Exp Neuropsychol 2017; 40:139-150. [DOI: 10.1080/13803395.2017.1324022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Stefan Scherbaum
- Department of Psychology, Technische Universität Dresden, Dresden, Germany
| | - Paul Haber
- NHMRC Centre of Research Excellence in Mental Health and Substance Use, Discipline of Addiction Medicine, Central Clinical School, The University of Sydney, Camperdown, NSW, Australia
| | - Kirsten Morley
- NHMRC Centre of Research Excellence in Mental Health and Substance Use, Discipline of Addiction Medicine, Central Clinical School, The University of Sydney, Camperdown, NSW, Australia
| | - Dylan Underhill
- School of Social Sciences and Psychology, Western Sydney University, Sydney, NSW, Australia
| | - Ahmed A. Moustafa
- School of Social Sciences and Psychology, Western Sydney University, Sydney, NSW, Australia
- Marcs Institute for Brain and Behaviour, Western Sydney University, Sydney, NSW, Australia
| |
Collapse
|