51
|
Scott JC, Slomiak ST, Jones JD, Rosen AFG, Moore TM, Gur RC. Association of Cannabis With Cognitive Functioning in Adolescents and Young Adults: A Systematic Review and Meta-analysis. JAMA Psychiatry 2018; 75:585-595. [PMID: 29710074 PMCID: PMC6137521 DOI: 10.1001/jamapsychiatry.2018.0335] [Citation(s) in RCA: 239] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
IMPORTANCE Substantial shifts in perception and policy regarding cannabis have recently occurred, with use of cannabis increasing while its perceived harm decreases. One possible risk of increased cannabis use is poorer cognitive functioning, especially in youth. OBJECTIVE To provide the first quantitative synthesis of the literature examining cannabis and cognitive functioning in adolescents and young adults (with a mean age of 26 years and younger). DATA SOURCES PubMed, PsycInfo, Academic Search Premier, Scopus, and bibliographies of relevant reviews were searched for peer-reviewed, English-language studies from the date the databases began through May 2017. STUDY SELECTION Consensus criteria were used to determine study inclusion through abstract and manuscript review. DATA EXTRACTION AND SYNTHESIS This study followed Meta-analysis of Observational Studies in Epidemiology guidelines. Effect size estimates were calculated using multivariate mixed-effects models for cognitive functioning outcomes classified into 10 domains. MAIN OUTCOMES AND MEASURES Results from neurocognitive tests administered in cross-sectional studies were primary outcomes, and we examined the influence of a priori explanatory variables on variability in effect size. RESULTS Sixty-nine studies of 2152 cannabis users (mean [SD] age, 20.6 [2.8] years; 1472 [68.4%] male) and 6575 comparison participants with minimal cannabis exposure were included (mean [SD] age, 20.8 [3.4]; 3669 [55.8%] male). Results indicated a small overall effect size (presented as mean d) for reduced cognitive functioning associated with frequent or heavy cannabis use (d, -0.25; 95% CI, -0.32 to -0.17; P < .001). The magnitude of effect sizes did not vary by sample age or age at cannabis use onset. However, studies requiring an abstinence period longer than 72 hours (15 studies; n = 928) had an overall effect size (d, -0.08; 95% CI, -0.22 to 0.07) that was not significantly different from 0 and smaller than studies with less stringent abstinence criteria (54 studies; n = 7799; d, -0.30; 95% CI, -0.37 to -0.22; P = .01). CONCLUSIONS AND RELEVANCE Associations between cannabis use and cognitive functioning in cross-sectional studies of adolescents and young adults are small and may be of questionable clinical importance for most individuals. Furthermore, abstinence of longer than 72 hours diminishes cognitive deficits associated with cannabis use. Although other outcomes (eg, psychosis) were not examined in the included studies, results indicate that previous studies of cannabis in youth may have overstated the magnitude and persistence of cognitive deficits associated with use. Reported deficits may reflect residual effects from acute use or withdrawal. Future studies should examine individual differences in susceptibility to cannabis-associated cognitive dysfunction.
Collapse
Affiliation(s)
- J. Cobb Scott
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia,Veterans Integrated Service Network 4 Mental Illness Research, Education, and Clinical Center at the Philadelphia VA Medical Center, Philadelphia, Pennsylvania
| | - Samantha T. Slomiak
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Jason D. Jones
- Department of Child and Adolescent Psychiatry and Behavioral Sciences, Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Adon F. G. Rosen
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Tyler M. Moore
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia
| | - Ruben C. Gur
- Department of Psychiatry, Perelman School of Medicine, University of Pennsylvania, Philadelphia,Veterans Integrated Service Network 4 Mental Illness Research, Education, and Clinical Center at the Philadelphia VA Medical Center, Philadelphia, Pennsylvania
| |
Collapse
|
52
|
Vergara VM, Weiland BJ, Hutchison KE, Calhoun VD. The Impact of Combinations of Alcohol, Nicotine, and Cannabis on Dynamic Brain Connectivity. Neuropsychopharmacology 2018; 43:877-890. [PMID: 29134961 PMCID: PMC5809800 DOI: 10.1038/npp.2017.280] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 10/07/2017] [Accepted: 11/02/2017] [Indexed: 01/05/2023]
Abstract
Alcohol, nicotine, and cannabis are among the most commonly used drugs. A prolonged and combined use of these substances can alter normal brain wiring in different ways depending on the consumed cocktail mixture. Brain connectivity alterations and their change with time can be assessed using functional magnetic resonance imaging (fMRI) because of its spatial and temporal content. Here, we estimated dynamic functional network connectivity (dFNC) as derived from fMRI data to investigate the effects of single or combined use of alcohol, nicotine, and cannabis. Data from 534 samples were grouped according to their substance use combination as controls (CTR), smokers (SMK), drinkers (DRN), smoking-and-drinking subjects (SAD), marijuana users (MAR), smoking-and-marijuana users (SAM), marijuana-and-drinking users (MAD), and users of all three substances (ALL). The DRN group tends to exhibit decreased connectivity mainly in areas of sensorial and motor control, a result supported by the dFNC outcome and the alcohol use disorder identification test. This trend dominated the SAD group and in a weaker manner MAD and ALL. Nicotine consumers were characterized by an increment of connectivity between dorsal striatum and sensorimotor areas. Where possible, common and separate effects were identified and characterized by the analysis of dFNC data. Results also suggest that a combination of cannabis and nicotine have more contrasting effects on the brain than a single use of any of these substances. On the other hand, marijuana and alcohol might follow an additive effect trend. We concluded that all of the substances have an impact on brain connectivity, but the effect differs depending on the dFNC state analyzed.
Collapse
Affiliation(s)
- Victor M Vergara
- The Mind Research Network and Lovelace Biomedical and Environmental Research Institute, Albuquerque, NM, USA,The Mind Research Network, Lovelace Biomedical and Environmental Research Institute, 1101 Yale Boulevard, Albuquerque, NM 87106, USA, Tel: +1 505 272 5028, Fax: +1 505 272 8002, E-mail:
| | - Barbara J Weiland
- Departments of Psychology and Neuroscience, University of Colorado, Boulder, CO, USA
| | - Kent E Hutchison
- Departments of Psychology and Neuroscience, University of Colorado, Boulder, CO, USA
| | - Vince D Calhoun
- The Mind Research Network and Lovelace Biomedical and Environmental Research Institute, Albuquerque, NM, USA
| |
Collapse
|
53
|
Manza P, Tomasi D, Volkow ND. Subcortical Local Functional Hyperconnectivity in Cannabis Dependence. BIOLOGICAL PSYCHIATRY: COGNITIVE NEUROSCIENCE AND NEUROIMAGING 2017; 3:285-293. [PMID: 29486870 DOI: 10.1016/j.bpsc.2017.11.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Revised: 10/10/2017] [Accepted: 11/13/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND Cannabis abuse (CA) has been associated with psychopathology, including negative emotionality and higher risk of psychosis, particularly with early age of initiation. However, the mechanisms underlying this association are poorly understood. Because aberrant dopamine signaling is implicated in cannabis-associated psychopathology, we hypothesized that regular CA would be associated with altered resting-state functional connectivity in dopamine midbrain-striatal circuits. METHODS We examined resting-state brain activity of subcortical regions in 441 young adults from the Human Connectome Project, including 30 subjects with CA meeting DSM-IV criteria for dependence and 30 control subjects matched on age, sex, education, body mass index, anxiety, depression, and alcohol and tobacco usage. RESULTS Across all subjects, local functional connectivity density hubs in subcortical regions were most prominent in ventral striatum, hippocampus, amygdala, dorsal midbrain, and posterior-ventral brainstem. As hypothesized, subjects with CA showed markedly increased local functional connectivity density relative to control subjects, not only in ventral striatum (where nucleus accumbens is located) and midbrain (where substantia nigra and ventral tegmental nuclei are located) but also in brainstem and lateral thalamus. These effects were observed in the absence of significant differences in subcortical volumes and were most pronounced in individuals who began cannabis use earliest in life and who reported high levels of negative emotionality. CONCLUSIONS Together, these findings suggest that chronic CA is associated with changes in resting-state brain function, particularly in dopaminergic nuclei implicated in psychosis but that are also critical for habit formation and reward processing. These results shed light on neurobiological differences that may be relevant to psychopathology associated with cannabis use.
Collapse
Affiliation(s)
- Peter Manza
- National Institute on Alcoholism and Alcohol Abuse, National Institutes of Health, Bethesda, Maryland.
| | - Dardo Tomasi
- National Institute on Alcoholism and Alcohol Abuse, National Institutes of Health, Bethesda, Maryland
| | - Nora D Volkow
- National Institute on Alcoholism and Alcohol Abuse, National Institutes of Health, Bethesda, Maryland; National Institute on Drug Abuse, National Institutes of Health, Bethesda, Maryland
| |
Collapse
|
54
|
Lichenstein SD, Musselman S, Shaw DS, Sitnick S, Forbes EE. Nucleus accumbens functional connectivity at age 20 is associated with trajectory of adolescent cannabis use and predicts psychosocial functioning in young adulthood. Addiction 2017; 112:1961-1970. [PMID: 28547854 PMCID: PMC5633503 DOI: 10.1111/add.13882] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Revised: 11/29/2016] [Accepted: 05/23/2017] [Indexed: 01/05/2023]
Abstract
AIMS (1) To identify trajectories of cannabis use across adolescence, (2) to measure the influence of cannabis use characteristics on functional connectivity of the nucleus accumbens (NAcc) and (3) to assess whether patterns of functional connectivity related to cannabis use are associated with psychosocial functioning 2 years later. DESIGN The Pitt Mother and Child Project (PMCP) is a prospective, longitudinal study of male youth at high risk for psychopathology based on family income and gender. SETTING Participants were recruited between age 6 and 17 months from the Women, Infants and Children Nutritional Supplement program (WIC) in the Pittsburgh, Pennsylvania area. PARTICIPANTS A total of 158 PMCP young men contributed functional magnetic resonance imaging (fMRI) and substance use data at age 20 years. MEASUREMENTS Latent class growth analysis was used to determine trajectories of cannabis use frequency from age 14 to 19 years. Psychophysiological interaction (PPI) analysis was used to measure functional connectivity between the NAcc and prefrontal cortex (PFC). Adolescent cannabis use trajectory, recent frequency of use and age of initiation were considered as developmental factors. We also tested whether functional connectivity was associated with depressive symptoms, anhedonia and educational attainment at age 22. FINDINGS We identified three distinct trajectories of adolescent cannabis use, characterized by stable high, escalating or stable low use. The cannabis use trajectory group had a significant effect on NAcc functional connectivity to the medial PFC (F = 11.32, Z = 4.04, Pfamily-wise error-corrected (FWE-corr) = 0.000). The escalating trajectory group displayed a pattern of negative NAcc-mPFC connectivity that was linked to higher levels of depressive symptoms (r = -0.17, P < .05), anhedonia (r = -0.19, P < .05) and lower educational attainment (t = -2.77, P < .01) at age 22. CONCLUSIONS Pattern of cannabis use frequency across adolescence in US youth could have consequences for mood symptoms and educational attainment in early adulthood via altered function in neural reward circuitry.
Collapse
Affiliation(s)
- Sarah D. Lichenstein
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, 15213 USA,Center for the Neural Bases of Cognition, University of Pittsburgh, Pittsburgh, PA, 15213 USA
| | - Samuel Musselman
- Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 15213 USA
| | - Daniel S. Shaw
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, 15213 USA
| | - Stephanie Sitnick
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, 15213 USA
| | - Erika E. Forbes
- Department of Psychology, University of Pittsburgh, Pittsburgh, PA, 15213 USA,Department of Psychiatry, University of Pittsburgh, Pittsburgh, PA, 15213 USA,Department of Pediatrics, University of Pittsburgh, Pittsburgh, PA, 15213 USA,Center for the Neural Bases of Cognition, University of Pittsburgh, Pittsburgh, PA, 15213 USA
| |
Collapse
|
55
|
Thijssen S, Rashid B, Gopal S, Nyalakanti P, Calhoun VD, Kiehl KA. Regular cannabis and alcohol use is associated with resting-state time course power spectra in incarcerated adolescents. Drug Alcohol Depend 2017; 178:492-500. [PMID: 28715777 PMCID: PMC5561725 DOI: 10.1016/j.drugalcdep.2017.05.045] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Revised: 05/31/2017] [Accepted: 05/31/2017] [Indexed: 12/24/2022]
Abstract
Cannabis and alcohol are believed to have widespread effects on the brain. Although adolescents are at increased risk for substance use, the adolescent brain may also be particularly vulnerable to the effects of drug exposure due to its rapid maturation. Here, we examined the association between cannabis and alcohol use duration and resting-state functional connectivity in a large sample of male juvenile delinquents. The present sample was drawn from the Southwest Advanced Neuroimaging Cohort, Youth sample, and from a youth detention facility in Wisconsin. All participants were scanned at the maximum-security facilities using The Mind Research Network's 1.5T Avanto SQ Mobile MRI scanner. Information on cannabis and alcohol regular use duration was collected using self-report. Resting-state networks were computed using group independent component analysis in 201 participants. Associations with cannabis and alcohol use were assessed using Mancova analyses controlling for age, IQ, smoking and psychopathy scores in the complete case sample of 180 male juvenile delinquents. No associations between alcohol or cannabis use and network spatial maps were found. Longer cannabis use was associated with decreased low frequency power of the default mode network, the executive control networks (ECNs), and several sensory networks, and with decreased functional network connectivity. Duration of alcohol use was associated with decreased low frequency power of the right frontoparietal network, salience network, dorsal attention network, and several sensory networks. Our findings suggest that adolescent cannabis and alcohol use are associated with widespread differences in resting-state time course power spectra, which may persist even after abstinence.
Collapse
Affiliation(s)
- Sandra Thijssen
- School of Pedagogical and Educational Sciences, Erasmus University of Rotterdam, The Netherlands; Center for Child and Family Studies, Leiden University, The Netherlands
| | - Barnaly Rashid
- The Mind Research Network, Albuquerque, NM, USA; Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA
| | - Shruti Gopal
- The Mind Research Network, Albuquerque, NM, USA; Chester F. Carlson Center for Imaging Science, Rochester Institute of Technology, Rochester, NY, USA
| | | | - Vince D Calhoun
- The Mind Research Network, Albuquerque, NM, USA; Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM, USA; Chester F. Carlson Center for Imaging Science, Rochester Institute of Technology, Rochester, NY, USA
| | - Kent A Kiehl
- The Mind Research Network, Albuquerque, NM, USA; Department of Neurosciences, School of Medicine, University of New Mexico, Albuquerque, NM, USA; Departments of Psychology, Neuroscience, and Law, University Of New Mexico, Albuquerque, NM, United States.
| |
Collapse
|
56
|
Blanco-Hinojo L, Pujol J, Harrison BJ, Macià D, Batalla A, Nogué S, Torrens M, Farré M, Deus J, Martín-Santos R. Attenuated frontal and sensory inputs to the basal ganglia in cannabis users. Addict Biol 2017; 22:1036-1047. [PMID: 26934839 DOI: 10.1111/adb.12370] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2015] [Revised: 11/30/2015] [Accepted: 01/07/2016] [Indexed: 12/18/2022]
Abstract
Heavy cannabis use is associated with reduced motivation. The basal ganglia, central in the motivation system, have the brain's highest cannabinoid receptor density. The frontal lobe is functionally coupled to the basal ganglia via segregated frontal-subcortical circuits conveying information from internal, self-generated activity. The basal ganglia, however, receive additional influence from the sensory system to further modulate purposeful behaviors according to the context. We postulated that cannabis use would impact functional connectivity between the basal ganglia and both internal (frontal cortex) and external (sensory cortices) sources of influence. Resting-state functional connectivity was measured in 28 chronic cannabis users and 29 controls. Selected behavioral tests included reaction time, verbal fluency and exposition to affective pictures. Assessments were repeated after one month of abstinence. Cannabis exposure was associated with (1) attenuation of the positive correlation between the striatum and areas pertaining to the 'limbic' frontal-basal ganglia circuit, and (2) attenuation of the negative correlation between the striatum and the fusiform gyrus, which is critical in recognizing significant visual features. Connectivity alterations were associated with lower arousal in response to affective pictures. Functional connectivity changes had a tendency to normalize after abstinence. The results overall indicate that frontal and sensory inputs to the basal ganglia are attenuated after chronic exposure to cannabis. This effect is consistent with the common behavioral consequences of chronic cannabis use concerning diminished responsiveness to both internal and external motivation signals. Such an impairment of the fine-tuning in the motivation system notably reverts after abstinence.
Collapse
Affiliation(s)
| | - Jesus Pujol
- MRI Research Unit; Hospital del Mar; Barcelona Spain
- Centro Investigación Biomédica en Red de Salud Mental; CIBERSAM G21; Barcelona Spain
| | - Ben J Harrison
- Melbourne Neuropsychiatry Centre, Department of Psychiatry; The University of Melbourne; Melbourne Australia
| | - Dídac Macià
- MRI Research Unit; Hospital del Mar; Barcelona Spain
| | - Albert Batalla
- Department of Psychiatry and Psychology; Hospital Clínic, Institut d'Investigació Biomédica August Pi I Sunyer (IDIBAPS), CIBERSAM G25; Barcelona Spain
- Nijmegen Institute for Scientist-Practitioners in Addiction; Nijmegen Netherlands
| | - Santiago Nogué
- Section of Clinical Toxicology, Emergency Service, Hospital Clínic, IDIBAPS; University of Barcelona; Barcelona Spain
| | - Marta Torrens
- Human Pharmacology and Clinical Neurosciences; Institute of Neuropsychiatry and Addiction, Hospital del Mar Medical Research Institute; Barcelona Spain
- School of Medicine, Autonomous University of Barcelona; Red de Trastornos Adictivos (RETIC); Barcelona Spain
| | - Magí Farré
- Human Pharmacology and Clinical Neurosciences; Institute of Neuropsychiatry and Addiction, Hospital del Mar Medical Research Institute; Barcelona Spain
- School of Medicine, Autonomous University of Barcelona; Red de Trastornos Adictivos (RETIC); Barcelona Spain
| | - Joan Deus
- MRI Research Unit; Hospital del Mar; Barcelona Spain
- Department of Clinical and Health Psychology; Autonomous University of Barcelona; Barcelona Spain
| | - Rocío Martín-Santos
- Department of Psychiatry and Psychology; Hospital Clínic, Institut d'Investigació Biomédica August Pi I Sunyer (IDIBAPS), CIBERSAM G25; Barcelona Spain
- Department of Psychiatry and Clinical Psychobiology; University of Barcelona; Barcelona Spain
| |
Collapse
|
57
|
Nader DA, Sanchez ZM. Effects of regular cannabis use on neurocognition, brain structure, and function: a systematic review of findings in adults. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2017; 44:4-18. [DOI: 10.1080/00952990.2017.1306746] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Danilo A. Nader
- Departmento de Medicina Preventiva, Universidade Federal de São Paulo, São Paulo, Brazil
| | - Zila M. Sanchez
- Departmento de Medicina Preventiva, Universidade Federal de São Paulo, São Paulo, Brazil
| |
Collapse
|
58
|
Wright NE, Scerpella D, Lisdahl KM. Marijuana Use Is Associated with Behavioral Approach and Depressive Symptoms in Adolescents and Emerging Adults. PLoS One 2016; 11:e0166005. [PMID: 27835662 PMCID: PMC5106002 DOI: 10.1371/journal.pone.0166005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 10/23/2016] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Repeated CB1 binding due to THC results in downregulation of the endocannabinoid system in cortex and limbic regions, perhaps disrupting frontolimbic functioning. This is particularly a concern in young adults who are still undergoing neurodevelopment in frontal and limbic regions. Such disruptions may be linked to increased depressive symptoms, anxiety symptoms, and executive dysfunction, and decreased behavioral approach. OBJECTIVES Here we examine the influence of young adult marijuana use on anxiety, depressive symptoms, behavioral approach, and executive dysfunction. The influence of alcohol and gender were also assessed. METHODS 84 participants (42 MJ, 42 controls) aged 18-25 were balanced for gender (39 F). Exclusion criteria included: MRI contraindications, left handed, comorbid Axis-I disorders, major medical or neurologic disorders, prenatal issues, or prenatal alcohol/illicit drug exposure, or excessive other drug use. Participants completed the FrsBE, BIS/BAS, State-Trait Anxiety Inventory (State), and BDI-II. Multiple regressions were run to predict anxiety, depressive symptoms, behavioral approach, and executive dysfunction from MJ group status, past year alcohol use, gender, and MJ*gender interactions, controlling for cotinine and ecstasy. RESULTS MJ group predicted increased depressive symptoms (p =.049). Decreased fun-seeking (p =.04), reward response (p =.01), and BAS total (p =.01) were predicted by MJ group. Gender predicted decreased reward responsiveness in females (p =.049) and decreased BIS in females (p =.03). Female marijuana users had increased anxiety symptoms (p =.04) and increased disinhibition (p =.04). Increased cotinine predicted increased drive (p =.046), reward responsiveness (p =.008) and BAS Total (p =.02). Apathy and Executive Dysfunction were not predicted by any measures. All results had small effect sizes. CONCLUSIONS/IMPORTANCE Depressive symptoms were greater in MJ users, while behavioral approach was decreased. Cotinine levels predicted increased behavioral approach. Female MJ users also had greater anxiety and disinhibition. In sum, these findings suggest sub-clinical threshold deficits related to regular marijuana use that are indicative of a need to prevent marijuana use in adolescents and young adults.
Collapse
Affiliation(s)
- Natasha E. Wright
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, United States of America
| | - Danny Scerpella
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, United States of America
| | - Krista M. Lisdahl
- Department of Psychology, University of Wisconsin-Milwaukee, Milwaukee, WI, United States of America
| |
Collapse
|
59
|
Osuch EA, Manning K, Hegele RA, Théberge J, Neufeld R, Mitchell D, Williamson P, Gardner RC. Depression, marijuana use and early-onset marijuana use conferred unique effects on neural connectivity and cognition. Acta Psychiatr Scand 2016; 134:399-409. [PMID: 27565994 DOI: 10.1111/acps.12629] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/25/2016] [Indexed: 12/25/2022]
Abstract
OBJECTIVE Marijuana (MJ) use is common. Research shows risks for psychiatric illnesses, including major depressive disorder (MDD) and cognitive deficits with MJ use, particularly early-onset use. We investigated cognitive function, functional connectivity, and genetic risk with MDD alone and combined with MJ use, and differences between early-vs. late-onset/non-MJ use in youth. METHOD A total of 74 youth in four groups were studied: healthy control, MDD, frequent MJ use and current/past MDD plus frequent MJ use. Psychiatric symptoms, cognitive performance and demographics were measured. Default mode network (DMN) brain connectivity was determined. Risk alleles in six genes of interest were evaluated. RESULTS DMN differences among groups in reward-processing and motor control regions were found; the effects of MJ use and MDD were distinct. Early-onset MJ use was associated with lower IQ and hyperconnectivity within areas of the DMN. Early-onset MJ use was associated with the BDNF risk allele. CONCLUSIONS Cognitive deficits linked with early-onset MJ use were present within several years after MJ use began and may result from, predispose to, or share a common cause with early-onset MJ use. The DMN was affected by MDD, MJ and their combination, as well as by early-onset MJ use. BDNF carrier state may predispose to early-onset MJ use.
Collapse
Affiliation(s)
- E A Osuch
- Department of Psychiatry, University of Western Ontario, London, ON, Canada. .,Department of Medical Biophysics, University of Western Ontario, London, ON, Canada. .,Program in Neuroscience, University of Western Ontario, London, ON, Canada. .,Lawson Health Research Institute, London, ON, Canada.
| | - K Manning
- Robarts Research Institute, London, ON, Canada
| | - R A Hegele
- Robarts Research Institute, London, ON, Canada
| | - J Théberge
- Department of Psychiatry, University of Western Ontario, London, ON, Canada.,Department of Medical Biophysics, University of Western Ontario, London, ON, Canada.,Lawson Health Research Institute, London, ON, Canada.,Department of Medical Imaging, University of Western Ontario, London, ON, Canada.,Department of Diagnostic Imaging, St. Joseph's Hospital, London, ON, Canada
| | - R Neufeld
- Department of Psychiatry, University of Western Ontario, London, ON, Canada.,Program in Neuroscience, University of Western Ontario, London, ON, Canada.,Department of Psychology, University of Western Ontario, London, ON, Canada
| | - D Mitchell
- Department of Psychiatry, University of Western Ontario, London, ON, Canada.,Department of Psychology, University of Western Ontario, London, ON, Canada.,Brain and Mind Institute, London, ON, Canada
| | - P Williamson
- Department of Psychiatry, University of Western Ontario, London, ON, Canada.,Department of Medical Biophysics, University of Western Ontario, London, ON, Canada.,Program in Neuroscience, University of Western Ontario, London, ON, Canada
| | - R C Gardner
- Department of Psychology, University of Western Ontario, London, ON, Canada
| |
Collapse
|
60
|
DeWitt SJ, Ketcherside A, McQueeny TM, Dunlop JP, Filbey FM. The hyper-sentient addict: an exteroception model of addiction. THE AMERICAN JOURNAL OF DRUG AND ALCOHOL ABUSE 2016; 41:374-81. [PMID: 26154169 DOI: 10.3109/00952990.2015.1049701] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
BACKGROUND Exteroception involves processes related to the perception of environmental stimuli important for an organism's ability to adapt to its environment. As such, exteroception plays a critical role in conditioned response. In addiction, behavioral and neuroimaging studies show that the conditioned response to drug-related cues is often associated with alterations in brain regions including the precuneus/posterior cingulate cortex, an important node within the default mode network dedicated to processes such as self-monitoring. OBJECTIVE This review aimed to summarize the growing, but largely fragmented, literature that supports a central role of exteroceptive processes in addiction. METHODS We performed a systematic review of empirical research via PubMed and Google Scholar with keywords including 'addiction', 'exteroception', 'precuneus', and 'self-awareness', to identify human behavioral and neuroimaging studies that report mechanisms of self-awareness in healthy populations, and altered self-awareness processes, specifically exteroception, in addicted populations. RESULTS Results demonstrate that exteroceptive processes play a critical role in conditioned cue response in addiction and serve as targets for interventions such as mindfulness training. Further, a hub of the default mode network, namely, the precuneus, is (i) consistently implicated in exteroceptive processes, and (ii) widely demonstrated to have increased activation and connectivity in addicted populations. CONCLUSION Heightened exteroceptive processes may underlie cue-elicited craving, which in turn may lead to the maintenance and worsening of substance use disorders. An exteroception model of addiction provides a testable framework from which novel targets for interventions can be identified.
Collapse
Affiliation(s)
- Samuel J DeWitt
- a Center for BrainHealth, University of Texas at Dallas , Dallas , TX , USA
| | | | | | | | | |
Collapse
|
61
|
Duquette LL, Mattiace F, Blum K, Waite RL, Boland T, McLaughlin T, Dushaj K, Febo M, Badgaiyan RD. Neurobiology of KB220Z-Glutaminergic-Dopaminergic Optimization Complex [GDOC] as a Liquid Nano: Clinical Activation of Brain in a Highly Functional Clinician Improving Focus, Motivation and Overall Sensory Input Following Chronic Intake. ACTA ACUST UNITED AC 2016; 3. [PMID: 29214221 PMCID: PMC5714519 DOI: 10.23937/2378-3656/1410104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Background With neurogenetic and epigenetic tools utilized in research and neuroimaging, we are unraveling the mysteries of brain function, especially as it relates to Reward Deficiency (RDS). We encourage the development of pharmaceuticals or nutraceuticals that promote a reduction in dopamine resistance and balance brain neurochemistry, leading to dopamine homeostasis. We disclose self-assessment of a highly functional professional under work-related stress following KB220Z use, a liquid (aqua) nano glutaminergic-dopaminergic optimization complex (GDOC). Case presentation Subject took GDOC for one month. Subject self-administered GDOC using one-half-ounce twice a day. During first three days, unique brain activation occurred; resembling white noise after 30 minutes and sensation was strong for 45 minutes and then dissipated. He described effect as if his eyesight improved slightly and pointed out that his sense of smell and sleep greatly improved. Subject experienced a calming effect similar to meditation that could be linked to dopamine release. He also reported control of going over the edge after a hard day’s work, which was coupled with a slight increase in energy, increased motivation to work, increased focus and multi-tasking, with clearer purpose of task at hand. Subject felt less inhibited in a social setting and suggested Syndrome that GDOC increased his Behavior Activating System (reward), while having a decrease in the Behavior Inhibition System (caution). Conclusion These results and other related studies reveal an improved mood, work-related focus, and sleep. These effects as a subjective feeling of brain activation maybe due to direct or indirect dopaminergic interaction. While this case is encouraging, we must await more research in a larger randomized placebo-controlled study to map the role of GDOC, especially in a nano-sized product, to determine the possible effects on circuit inhibitory control and memory banks and the induction of dopamine homeostasis independent of either hypo- or hyper-dopaminergic traits/states.
Collapse
Affiliation(s)
- Lucien L Duquette
- New Pathway Counseling Services Inc., Paramus, NJ, USA.,Behavior Wellness Center, Englewood, NJ, USA
| | | | - Kenneth Blum
- Department of Psychiatry & McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, USA.,Division of Addiction Services, Dominion Diagnostics, LLC., North Kingstown, RI, USA.,Division of Neuroscience-Based Therapy, Summit Estate Recovery Center, Los Gatos, CA, USA.,Department of Psychiatry & Behavioral Sciences, Keck School of Medicine of USC, Los Angeles, CA, USA.,Department of Clinical Neurology, PATH Foundation NY, New York, NY, USA.,Department of Nutrigenomic Translational Research, LaVita RDS, Salt Lake City, UT, USA.,Division of Neuroscience Research & Addiction Therapy, Shores Treatment & Recovery Center, Port Saint Lucie, FL, USA
| | - Roger L Waite
- Department of Nutrigenomic Translational Research, LaVita RDS, Salt Lake City, UT, USA
| | | | | | - Kristina Dushaj
- Department of Clinical Neurology, PATH Foundation NY, New York, NY, USA
| | - Marcelo Febo
- Department of Psychiatry & McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, USA
| | - Rajendra D Badgaiyan
- Department of Psychiatry, Laboratory of Molecular and Functional Imaging, University of Minnesota, Minneapolis, MN, USA
| |
Collapse
|
62
|
Ganzer F, Bröning S, Kraft S, Sack PM, Thomasius R. Weighing the Evidence: A Systematic Review on Long-Term Neurocognitive Effects of Cannabis Use in Abstinent Adolescents and Adults. Neuropsychol Rev 2016; 26:186-222. [DOI: 10.1007/s11065-016-9316-2] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 04/14/2016] [Indexed: 11/29/2022]
|
63
|
Abstract
Impaired emotion regulation contributes to the development and severity of substance use disorders (substance disorders). This review summarizes the literature on alterations in emotion regulation neural circuitry in substance disorders, particularly in relation to disorders of negative affect (without substance disorder), and it presents promising areas of future research. Emotion regulation paradigms during functional magnetic resonance imaging are conceptualized into four dimensions: affect intensity and reactivity, affective modulation, cognitive modulation, and behavioral control. The neural circuitry associated with impaired emotion regulation is compared in individuals with and without substance disorders, with a focus on amygdala, insula, and prefrontal cortex activation and their functional and structural connectivity. Hypoactivation of the rostral anterior cingulate cortex/ventromedial prefrontal cortex (rACC/vmPFC) is the most consistent finding across studies, dimensions, and clinical populations (individuals with and without substance disorders). The same pattern is evident for regions in the cognitive control network (anterior cingulate and dorsal and ventrolateral prefrontal cortices) during cognitive modulation and behavioral control. These congruent findings are possibly related to attenuated functional and/or structural connectivity between the amygdala and insula and between the rACC/vmPFC and cognitive control network. Although increased amygdala and insula activation is associated with impaired emotion regulation in individuals without substance disorders, it is not consistently observed in substance disorders. Emotion regulation disturbances in substance disorders may therefore stem from impairments in prefrontal functioning, rather than excessive reactivity to emotional stimuli. Treatments for emotion regulation in individuals without substance disorders that normalize prefrontal functioning may offer greater efficacy for substance disorders than treatments that dampen reactivity.
Collapse
|
64
|
Miller RL, Yaesoubi M, Turner JA, Mathalon D, Preda A, Pearlson G, Adali T, Calhoun VD. Higher Dimensional Meta-State Analysis Reveals Reduced Resting fMRI Connectivity Dynamism in Schizophrenia Patients. PLoS One 2016; 11:e0149849. [PMID: 26981625 PMCID: PMC4794213 DOI: 10.1371/journal.pone.0149849] [Citation(s) in RCA: 125] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 02/05/2016] [Indexed: 11/30/2022] Open
Abstract
Resting-state functional brain imaging studies of network connectivity have long assumed that functional connections are stationary on the timescale of a typical scan. Interest in moving beyond this simplifying assumption has emerged only recently. The great hope is that training the right lens on time-varying properties of whole-brain network connectivity will shed additional light on previously concealed brain activation patterns characteristic of serious neurological or psychiatric disorders. We present evidence that multiple explicitly dynamical properties of time-varying whole-brain network connectivity are strongly associated with schizophrenia, a complex mental illness whose symptomatic presentation can vary enormously across subjects. As with so much brain-imaging research, a central challenge for dynamic network connectivity lies in determining transformations of the data that both reduce its dimensionality and expose features that are strongly predictive of important population characteristics. Our paper introduces an elegant, simple method of reducing and organizing data around which a large constellation of mutually informative and intuitive dynamical analyses can be performed. This framework combines a discrete multidimensional data-driven representation of connectivity space with four core dynamism measures computed from large-scale properties of each subject’s trajectory, ie., properties not identifiable with any specific moment in time and therefore reasonable to employ in settings lacking inter-subject time-alignment, such as resting-state functional imaging studies. Our analysis exposes pronounced differences between schizophrenia patients (Nsz = 151) and healthy controls (Nhc = 163). Time-varying whole-brain network connectivity patterns are found to be markedly less dynamically active in schizophrenia patients, an effect that is even more pronounced in patients with high levels of hallucinatory behavior. To the best of our knowledge this is the first demonstration that high-level dynamic properties of whole-brain connectivity, generic enough to be commensurable under many decompositions of time-varying connectivity data, exhibit robust and systematic differences between schizophrenia patients and healthy controls.
Collapse
Affiliation(s)
- Robyn L. Miller
- The Mind Research Network, Albuquerque, New Mexico, United States of America
- * E-mail:
| | - Maziar Yaesoubi
- The Mind Research Network, Albuquerque, New Mexico, United States of America
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico, United States of America
| | - Jessica A. Turner
- Department of Psychology and Neuroscience, Georgia State University, Atlanta, Georgia, United States of America
| | - Daniel Mathalon
- Department of Psychiatry, University of California San Francisco School of Medicine, San Francisco, California, United States of America
| | - Adrian Preda
- Department of Psychiatry and Human Behavior, University of California Irvine School of Medicine, Irvine, California, United States of America
| | - Godfrey Pearlson
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, United States of America
- Olin Neuropyschiatry Research Center, New Haven, Connecticut, United States of America
| | - Tulay Adali
- Department of Computer Science and Electrical Engineering, University of Maryland Baltimore County, Baltimore, Maryland, United States of America
| | - Vince D. Calhoun
- The Mind Research Network, Albuquerque, New Mexico, United States of America
- Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, New Mexico, United States of America
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut, United States of America
| |
Collapse
|
65
|
Moeller SJ, London ED, Northoff G. Neuroimaging markers of glutamatergic and GABAergic systems in drug addiction: Relationships to resting-state functional connectivity. Neurosci Biobehav Rev 2016; 61:35-52. [PMID: 26657968 PMCID: PMC4731270 DOI: 10.1016/j.neubiorev.2015.11.010] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Revised: 11/05/2015] [Accepted: 11/21/2015] [Indexed: 12/29/2022]
Abstract
Drug addiction is characterized by widespread abnormalities in brain function and neurochemistry, including drug-associated effects on concentrations of the excitatory and inhibitory neurotransmitters glutamate and gamma-aminobutyric acid (GABA), respectively. In healthy individuals, these neurotransmitters drive the resting state, a default condition of brain function also disrupted in addiction. Here, our primary goal was to review in vivo magnetic resonance spectroscopy and positron emission tomography studies that examined markers of glutamate and GABA abnormalities in human drug addiction. Addicted individuals tended to show decreases in these markers compared with healthy controls, but findings also varied by individual characteristics (e.g., abstinence length). Interestingly, select corticolimbic brain regions showing glutamatergic and/or GABAergic abnormalities have been similarly implicated in resting-state functional connectivity deficits in drug addiction. Thus, our secondary goals were to provide a brief review of this resting-state literature, and an initial rationale for the hypothesis that abnormalities in glutamatergic and/or GABAergic neurotransmission may underlie resting-state functional deficits in drug addiction. In doing so, we suggest future research directions and possible treatment implications.
Collapse
Affiliation(s)
- Scott J Moeller
- Departments of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Edythe D London
- Departments of Psychiatry and Neuroscience, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Departments of Psychiatry and Biobehavioral Sciences, and Molecular and Medical Pharmacology, University of California Los Angeles, Los Angeles, CA, USA
| | - Georg Northoff
- Brain Imaging and Neuroethics Research Unit, Institute of Mental Health Research, Ottawa, Canada.
| |
Collapse
|
66
|
The Integrative Self: How Self-Reference Integrates Perception and Memory. Trends Cogn Sci 2015; 19:719-728. [DOI: 10.1016/j.tics.2015.08.015] [Citation(s) in RCA: 218] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Revised: 08/18/2015] [Accepted: 08/25/2015] [Indexed: 11/17/2022]
|
67
|
Heitzeg MM, Cope LM, Martz ME, Hardee JE, Zucker RA. Brain activation to negative stimuli mediates a relationship between adolescent marijuana use and later emotional functioning. Dev Cogn Neurosci 2015; 16:71-83. [PMID: 26403581 PMCID: PMC4691419 DOI: 10.1016/j.dcn.2015.09.003] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2015] [Revised: 08/31/2015] [Accepted: 09/07/2015] [Indexed: 01/30/2023] Open
Abstract
This work investigated the impact of heavy marijuana use during adolescence on emotional functioning, as well as the brain functional mediators of this effect. Participants (n=40) were recruited from the Michigan Longitudinal Study (MLS). Data on marijuana use were collected prospectively beginning in childhood as part of the MLS. Participants were classified as heavy marijuana users (n=20) or controls with minimal marijuana use. Two facets of emotional functioning-negative emotionality and resiliency (a self-regulatory mechanism)-were assessed as part of the MLS at three time points: mean age 13.4, mean age 19.6, and mean age 23.1. Functional neuroimaging data during an emotion-arousal word task were collected at mean age 20.2. Negative emotionality decreased and resiliency increased across the three time points in controls but not heavy marijuana users. Compared with controls, heavy marijuana users had less activation to negative words in temporal, prefrontal, and occipital cortices, insula, and amygdala. Activation of dorsolateral prefrontal cortex to negative words mediated an association between marijuana group and later negative emotionality. Activation of the cuneus/lingual gyrus mediated an association between marijuana group and later resiliency. Results support growing evidence that heavy marijuana use during adolescence affects later emotional outcomes.
Collapse
Affiliation(s)
- Mary M Heitzeg
- Department of Psychiatry, Addiction Research Center, University of Michigan, 4250 Plymouth Road, Ann Arbor, MI 48109, USA.
| | - Lora M Cope
- Department of Psychiatry, Addiction Research Center, University of Michigan, 4250 Plymouth Road, Ann Arbor, MI 48109, USA.
| | - Meghan E Martz
- Department of Psychiatry, Addiction Research Center, University of Michigan, 4250 Plymouth Road, Ann Arbor, MI 48109, USA; Department of Psychology, University of Michigan, 2044 East Hall, 530 Church Street, Ann Arbor, MI 48108, USA.
| | - Jillian E Hardee
- Department of Psychiatry, Addiction Research Center, University of Michigan, 4250 Plymouth Road, Ann Arbor, MI 48109, USA.
| | - Robert A Zucker
- Department of Psychiatry, Addiction Research Center, University of Michigan, 4250 Plymouth Road, Ann Arbor, MI 48109, USA; Department of Psychology, University of Michigan, 2044 East Hall, 530 Church Street, Ann Arbor, MI 48108, USA.
| |
Collapse
|
68
|
Abram SV, Wisner KM, Grazioplene RG, Krueger RF, MacDonald AW, DeYoung CG. Functional coherence of insula networks is associated with externalizing behavior. JOURNAL OF ABNORMAL PSYCHOLOGY 2015; 124:1079-91. [PMID: 26301974 DOI: 10.1037/abn0000078] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The externalizing spectrum encompasses a range of maladaptive behaviors, including substance-use problems, impulsivity, and aggression. Although previous literature has linked externalizing behaviors with prefrontal and amygdala abnormalities, recent studies suggest insula functionality is implicated. This study investigated the relation between insula functional coherence and externalizing in a large community sample (N = 244). Participants underwent a resting functional MRI scan. Three nonartifactual intrinsic connectivity networks (ICNs) substantially involving the insula were identified after completing independent components analysis. Three externalizing domains-general disinhibition, substance abuse, and callous aggression-were measured with the Externalizing Spectrum Inventory. Regression models tested whether within-network coherence for the 3 insula ICNs was related to each externalizing domain. Posterior insula coherence was positively associated with general disinhibition and substance abuse. Anterior insula/ventral striatum/anterior cingulate network coherence was negatively associated with general disinhibition. Insula coherence did not relate to the callous aggression domain. Follow-up analyses indicated specificity for insula ICNs in their relation to general disinhibition and substance abuse as compared with other frontal and limbic ICNs. This study found insula network coherence was significantly associated with externalizing behaviors in community participants. Frontal and limbic ICNs containing less insular cortex were not related to externalizing. Thus, the neural synchrony of insula networks may be central for understanding externalizing psychopathology.
Collapse
Affiliation(s)
| | - Krista M Wisner
- Department of Psychology, University of Minnesota, Twin Cities
| | | | | | | | - Colin G DeYoung
- Department of Psychology, University of Minnesota, Twin Cities
| |
Collapse
|
69
|
Wetherill RR, Fang Z, Jagannathan K, Childress AR, Rao H, Franklin TR. Cannabis, cigarettes, and their co-occurring use: Disentangling differences in default mode network functional connectivity. Drug Alcohol Depend 2015; 153:116-23. [PMID: 26094186 PMCID: PMC4509835 DOI: 10.1016/j.drugalcdep.2015.05.046] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Revised: 05/26/2015] [Accepted: 05/29/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Resting-state functional connectivity is a noninvasive, neuroimaging method for assessing neural network function. Altered functional connectivity among regions of the default-mode network have been associated with both nicotine and cannabis use; however, less is known about co-occurring cannabis and tobacco use. METHODS We used posterior cingulate cortex (PCC) seed-based resting-state functional connectivity analyses to examine default mode network (DMN) connectivity strength differences between four groups: (1) individuals diagnosed with cannabis dependence who do not smoke tobacco (n=19; ages 20-50), (2) cannabis-dependent individuals who smoke tobacco (n=23, ages 21-52), (3) cannabis-naïve, nicotine-dependent individuals who smoke tobacco (n=24, ages 21-57), and (4) cannabis- and tobacco-naïve healthy controls (n=21, ages 21-50), controlling for age, sex, and alcohol use. We also explored associations between connectivity strength and measures of cannabis and tobacco use. RESULTS PCC seed-based analyses identified the core nodes of the DMN (i.e., PCC, medial prefrontal cortex, inferior parietal cortex, and temporal cortex). In general, the cannabis-dependent, nicotine-dependent, and co-occurring use groups showed lower DMN connectivity strengths than controls, with unique group differences in connectivity strength between the PCC and the cerebellum, medial prefrontal cortex, parahippocampus, and anterior insula. In cannabis-dependent individuals, PCC-right anterior insula connectivity strength correlated with duration of cannabis use. CONCLUSIONS This study extends previous research that independently examined the differences in resting-state functional connectivity among individuals who smoke cannabis and tobacco by including an examination of co-occurring cannabis and tobacco use and provides further evidence that cannabis and tobacco exposure is associated with alterations in DMN connectivity.
Collapse
Affiliation(s)
- Reagan R Wetherill
- University of Pennsylvania, Department of Psychiatry, Philadelphia, PA 19104, USA.
| | - Zhuo Fang
- University of Pennsylvania, Department of Psychiatry, Philadelphia, PA 19104, USA
| | - Kanchana Jagannathan
- University of Pennsylvania, Department of Psychiatry, Philadelphia, PA 19104, USA
| | - Anna Rose Childress
- University of Pennsylvania, Department of Psychiatry, Philadelphia, PA 19104, USA
| | - Hengyi Rao
- University of Pennsylvania, Center for Functional Neuroimaging, Philadelphia, PA 19104 USA
| | - Teresa R Franklin
- University of Pennsylvania, Department of Psychiatry, Philadelphia, PA 19104, USA
| |
Collapse
|
70
|
Bhattacharyya S, Falkenberg I, Martin-Santos R, Atakan Z, Crippa JA, Giampietro V, Brammer M, McGuire P. Cannabinoid modulation of functional connectivity within regions processing attentional salience. Neuropsychopharmacology 2015; 40:1343-52. [PMID: 25249057 PMCID: PMC4397391 DOI: 10.1038/npp.2014.258] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2014] [Revised: 05/18/2014] [Accepted: 06/12/2014] [Indexed: 12/31/2022]
Abstract
There is now considerable evidence to support the hypothesis that psychotic symptoms are the result of abnormal salience attribution, and that the attribution of salience is largely mediated through the prefrontal cortex, the striatum, and the hippocampus. Although these areas show differential activation under the influence of delta-9-tetrahydrocannabinol (delta-9-THC) and cannabidiol (CBD), the two major derivatives of cannabis sativa, little is known about the effects of these cannabinoids on the functional connectivity between these regions. We investigated this in healthy occasional cannabis users by employing event-related functional magnetic resonance imaging (fMRI) following oral administration of delta-9-THC, CBD, or a placebo capsule. Employing a seed cluster-based functional connectivity analysis that involved using the average time series from each seed cluster for a whole-brain correlational analysis, we investigated the effect of drug condition on functional connectivity between the seed clusters and the rest of the brain during an oddball salience processing task. Relative to the placebo condition, delta-9-THC and CBD had opposite effects on the functional connectivity between the dorsal striatum, the prefrontal cortex, and the hippocampus. Delta-9-THC reduced fronto-striatal connectivity, which was related to its effect on task performance, whereas this connection was enhanced by CBD. Conversely, mediotemporal-prefrontal connectivity was enhanced by delta-9-THC and reduced by CBD. Our results suggest that the functional integration of brain regions involved in salience processing is differentially modulated by single doses of delta-9-THC and CBD and that this relates to the processing of salient stimuli.
Collapse
Affiliation(s)
- Sagnik Bhattacharyya
- Department of Psychosis Studies, King's College London, Institute of Psychiatry, London, UK,Department of Psychosis Studies, Psychosis Clinical Academic Group, King's College London, Institute of Psychiatry, 6th Floor, Main Building, PO Box 067, De Crespigny Park, London SE5 8AF, UK, Tel: +44 (0)20 78480955, Fax: +44 (0)20 78480976, E-mail:
| | - Irina Falkenberg
- Department of Psychosis Studies, King's College London, Institute of Psychiatry, London, UK,Department of Psychiatry and Psychotherapy, Philipps-University Marburg, Marburg, Germany
| | - Rocio Martin-Santos
- Instituto de Investigaciones Biomedicas August Pi i Sunyer (IDIBAPS), and Centro de Investigación Biomedica en Red en Salud Mental (CIBERSAM), Barcelona, Spain,Department of Psychiatry and Psychology, Hospital Clinic, University of Barcelona, Barcelona, Spain,INCT Translational Medicine (CNPq), Rio de Janeiro, Brazil
| | - Zerrin Atakan
- Department of Psychosis Studies, King's College London, Institute of Psychiatry, London, UK
| | - Jose A Crippa
- INCT Translational Medicine (CNPq), Rio de Janeiro, Brazil,Department of Neuroscience and Behavior, Ribeirão Preto Medical School, University of São Paulo, São Paulo, Brazil
| | - Vincent Giampietro
- Department of Neuroimaging, King's College London, Institute of Psychiatry, London, UK
| | - Mick Brammer
- Department of Neuroimaging, King's College London, Institute of Psychiatry, London, UK
| | - Philip McGuire
- Department of Psychosis Studies, King's College London, Institute of Psychiatry, London, UK
| |
Collapse
|
71
|
Peeters SCT, van de Ven V, Gronenschild EHBM, Patel AX, Habets P, Goebel R, van Os J, Marcelis M. Default mode network connectivity as a function of familial and environmental risk for psychotic disorder. PLoS One 2015; 10:e0120030. [PMID: 25790002 PMCID: PMC4366233 DOI: 10.1371/journal.pone.0120030] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Accepted: 01/19/2015] [Indexed: 12/21/2022] Open
Abstract
Background Research suggests that altered interregional connectivity in specific networks, such as the default mode network (DMN), is associated with cognitive and psychotic symptoms in schizophrenia. In addition, frontal and limbic connectivity alterations have been associated with trauma, drug use and urban upbringing, though these environmental exposures have never been examined in relation to DMN functional connectivity in psychotic disorder. Methods Resting-state functional MRI scans were obtained from 73 patients with psychotic disorder, 83 non-psychotic siblings of patients with psychotic disorder and 72 healthy controls. Posterior cingulate cortex (PCC) seed-based correlation analysis was used to estimate functional connectivity within the DMN. DMN functional connectivity was examined in relation to group (familial risk), group × environmental exposure (to cannabis, developmental trauma and urbanicity) and symptomatology. Results There was a significant association between group and PCC connectivity with the inferior parietal lobule (IPL), the precuneus (PCu) and the medial prefrontal cortex (MPFC). Compared to controls, patients and siblings had increased PCC connectivity with the IPL, PCu and MPFC. In the IPL and PCu, the functional connectivity of siblings was intermediate to that of controls and patients. No significant associations were found between DMN connectivity and (subclinical) psychotic/cognitive symptoms. In addition, there were no significant interactions between group and environmental exposures in the model of PCC functional connectivity. Discussion Increased functional connectivity in individuals with (increased risk for) psychotic disorder may reflect trait-related network alterations. The within-network “connectivity at rest” intermediate phenotype was not associated with (subclinical) psychotic or cognitive symptoms. The association between familial risk and DMN connectivity was not conditional on environmental exposure.
Collapse
Affiliation(s)
- Sanne C. T. Peeters
- Dept. of Psychiatry and Psychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Vincent van de Ven
- Dept. of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, University of Maastricht, Maastricht, The Netherlands
| | - Ed H. B. M Gronenschild
- Dept. of Psychiatry and Psychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Ameera X. Patel
- Behavioral and Clinical Neuroscience Institute, Department of Psychiatry, University of Cambridge, Cambridge, United Kingdom
| | - Petra Habets
- Dept. of Psychiatry and Psychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Rainer Goebel
- Dept. of Cognitive Neuroscience, Faculty of Psychology and Neuroscience, University of Maastricht, Maastricht, The Netherlands
| | - Jim van Os
- Dept. of Psychiatry and Psychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Center, Maastricht, The Netherlands
- King's College London, King's Health Partners, Department of Psychosis Studies Institute of Psychiatry, London, United Kingdom
| | - Machteld Marcelis
- Dept. of Psychiatry and Psychology, School for Mental Health and Neuroscience, EURON, Maastricht University Medical Center, Maastricht, The Netherlands
- Institute for Mental Health Care Eindhoven (GGzE), Eindhoven, The Netherlands
- * E-mail:
| | | |
Collapse
|
72
|
Cheng H, Skosnik PD, Pruce BJ, Brumbaugh MS, Vollmer JM, Fridberg DJ, O’Donnell BF, Hetrick WP, Newman SD. Resting state functional magnetic resonance imaging reveals distinct brain activity in heavy cannabis users - a multi-voxel pattern analysis. J Psychopharmacol 2014; 28:1030-40. [PMID: 25237118 PMCID: PMC4427512 DOI: 10.1177/0269881114550354] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Chronic cannabis use can cause cognitive, perceptual and personality alterations, which are believed to be associated with regional brain changes and possible changes in connectivity between functional regions. This study aims to identify the changes from resting state functional magnetic resonance imaging scans. A two-level multi-voxel pattern analysis was proposed to classify male cannabis users from normal controls. The first level analysis works on a voxel basis and identifies clusters for the input of a second level analysis, which works on the functional connectivity between these regions. We found distinct clusters for male cannabis users in the middle frontal gyrus, precentral gyrus, superior frontal gyrus, posterior cingulate cortex, cerebellum and some other regions. Based on the functional connectivity of these clusters, a high overall accuracy rate of 84-88% in classification accuracy was achieved. High correlations were also found between the overall classification accuracy and Barrett Barrett Impulsiveness Scale factor scores of attention and motor. Our result suggests regional differences in the brains of male cannabis users that span from the cerebellum to the prefrontal cortex, which are associated with differences in functional connectivity.
Collapse
Affiliation(s)
- H Cheng
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - PD Skosnik
- Department of Psychiatry, The Yale University School of Medicine, New Haven, CT, USA
| | - BJ Pruce
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - MS Brumbaugh
- Department of Psychiatry, The Yale University School of Medicine, New Haven, CT, USA
| | - JM Vollmer
- Department of Psychiatry, The Yale University School of Medicine, New Haven, CT, USA
| | - DJ Fridberg
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - BF O’Donnell
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - WP Hetrick
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| | - SD Newman
- Department of Psychological and Brain Sciences, Indiana University, Bloomington, IN, USA
| |
Collapse
|
73
|
Pujol J, Macià D, Blanco-Hinojo L, Martínez-Vilavella G, Sunyer J, de la Torre R, Caixàs A, Martín-Santos R, Deus J, Harrison BJ. Does motion-related brain functional connectivity reflect both artifacts and genuine neural activity? Neuroimage 2014; 101:87-95. [PMID: 24999036 DOI: 10.1016/j.neuroimage.2014.06.065] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2014] [Revised: 06/18/2014] [Accepted: 06/27/2014] [Indexed: 11/15/2022] Open
Abstract
Imaging research on functional connectivity is uniquely contributing to characterize the functional organization of the human brain. Functional connectivity measurements, however, may be significantly influenced by head motion that occurs during image acquisition. The identification of how motion influences such measurements is therefore highly relevant to the interpretation of a study's results. We have mapped the effect of head motion on functional connectivity in six different populations representing a wide range of potential influences of motion on functional connectivity. Group-level voxel-wise maps of the correlation between a summary head motion measurement and functional connectivity degree were estimated in 80 young adults, 71 children, 53 older adults, 20 patients with Down syndrome, 24 with Prader-Willi syndrome and 20 with Williams syndrome. In highly compliant young adults, motion correlated with functional connectivity measurements showing a system-specific anatomy involving the sensorimotor cortex, visual areas and default mode network. Further characterization was strongly indicative of these changes expressing genuine neural activity related to motion, as opposed to pure motion artifact. In the populations with larger head motion, results were more indicative of widespread artifacts, but showing notably distinct spatial distribution patterns. Group-level regression of motion effects was efficient in removing both generalized changes and changes putatively related to neural activity. Overall, this study endorses a relatively simple approach for mapping distinct effects of head motion on functional connectivity. Importantly, our findings support the intriguing hypothesis that a component of motion-related changes may reflect system-specific neural activity.
Collapse
Affiliation(s)
- Jesus Pujol
- MRI Research Unit, CRC Mar, Hospital del Mar, Barcelona, Spain; Centro Investigación Biomédica en Red de Salud Mental, CIBERSAM G21, Barcelona, Spain.
| | - Dídac Macià
- MRI Research Unit, CRC Mar, Hospital del Mar, Barcelona, Spain
| | - Laura Blanco-Hinojo
- MRI Research Unit, CRC Mar, Hospital del Mar, Barcelona, Spain; Human Pharmacology and Clinical Neurosciences, Hospital del Mar Medical Research Institute, Barcelona, Spain
| | | | - Jordi Sunyer
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain; Universitat Pompeu Fabra (UFP), Barcelona, Spain
| | - Rafael de la Torre
- Human Pharmacology and Clinical Neurosciences, Hospital del Mar Medical Research Institute, Barcelona, Spain; CIBER-Fisiopatología de la Obesidad y Nutrición (CIBEROBN), S. de Compostela, Spain
| | - Assumpta Caixàs
- Diabetes Endocrinology and Nutrition Department, Hospital de Sabadell, Institut Universitari Parc Taulí, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Rocío Martín-Santos
- Department of Psychiatry and Clinical Psychobiology, Clinical Institute of Neuroscience, Hospital Clínic, CIBERSAM, University of Barcelona, Barcelona, Spain
| | - Joan Deus
- MRI Research Unit, CRC Mar, Hospital del Mar, Barcelona, Spain; Department of Clinical and Health Psychology, Autonomous University of Barcelona, Barcelona, Spain
| | - Ben J Harrison
- Melbourne Neuropsychiatry Centre, Department of Psychiatry, The University of Melbourne, Melbourne, Australia
| |
Collapse
|