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Happer JP, Beaton LE, Wagner LC, Hodgkinson CA, Goldman D, Marinkovic K. Neural indices of heritable impulsivity: Impact of the COMT Val158Met polymorphism on frontal beta power during early motor preparation. Biol Psychol 2024; 191:108826. [PMID: 38862067 DOI: 10.1016/j.biopsycho.2024.108826] [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: 01/02/2024] [Revised: 05/14/2024] [Accepted: 05/31/2024] [Indexed: 06/13/2024]
Abstract
Studies of COMT Val158Met suggest that the neural circuitry subserving inhibitory control may be modulated by this functional polymorphism altering cortical dopamine availability, thus giving rise to heritable differences in behaviors. Using an anatomically-constrained magnetoencephalography method and stratifying the sample by COMT genotype, from a larger sample of 153 subjects, we examined the spatial and temporal dynamics of beta oscillations during motor execution and inhibition in 21 healthy Met158/Met158 (high dopamine) or 21 Val158/Val158 (low dopamine) genotype individuals during a Go/NoGo paradigm. While task performance was unaffected, Met158 homozygotes demonstrated an overall increase in beta power across regions essential for inhibitory control during early motor preparation (∼100 ms latency), suggestive of a global motor "pause" on behavior. This increase was especially evident on Go trials with slow response speed and was absent during inhibition failures. Such a pause could underlie the tendency of Met158 allele carriers to be more cautious and inhibited. In contrast, Val158 homozygotes exhibited a beta drop during early motor preparation, indicative of high response readiness. This decrease was associated with measures of behavioral disinhibition and consistent with greater extraversion and impulsivity observed in Val homozygotes. These results provide mechanistic insight into genetically-determined interindividual differences of inhibitory control with higher cortical dopamine associated with momentary response hesitation, and lower dopamine leading to motor impulsivity.
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Affiliation(s)
- Joseph P Happer
- San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA
| | - Lauren E Beaton
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Laura C Wagner
- Department of Psychology, San Diego State University, San Diego, CA, USA
| | | | - David Goldman
- Laboratory of Neurogenetics, NIAAA, NIH, Bethesda, MD, USA
| | - Ksenija Marinkovic
- San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA; Department of Psychology, San Diego State University, San Diego, CA, USA; Department of Radiology, University of California, La Jolla, San Diego, CA, USA.
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2
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Blum K, Ashford JW, Kateb B, Sipple D, Braverman E, Dennen CA, Baron D, Badgaiyan R, Elman I, Cadet JL, Thanos PK, Hanna C, Bowirrat A, Modestino EJ, Yamamoto V, Gupta A, McLaughlin T, Makale M, Gold MS. Dopaminergic dysfunction: Role for genetic & epigenetic testing in the new psychiatry. J Neurol Sci 2023; 453:120809. [PMID: 37774561 DOI: 10.1016/j.jns.2023.120809] [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: 07/17/2021] [Revised: 08/02/2023] [Accepted: 09/11/2023] [Indexed: 10/01/2023]
Abstract
Reward Deficiency Syndrome (RDS), particularly linked to addictive disorders, costs billions of dollars globally and has resulted in over one million deaths in the United States (US). Illicit substance use has been steadily rising and in 2021 approximately 21.9% (61.2 million) of individuals living in the US aged 12 or older had used illicit drugs in the past year. However, only 1.5% (4.1 million) of these individuals had received any substance use treatment. This increase in use and failure to adequately treat or provide treatment to these individuals resulted in 106,699 overdose deaths in 2021 and increased in 2022. This article presents an alternative non-pharmaceutical treatment approach tied to gene-guided therapy, the subject of many decades of research. The cornerstone of this paradigm shift is the brain reward circuitry, brain stem physiology, and neurotransmitter deficits due to the effects of genetic and epigenetic insults on the interrelated cascade of neurotransmission and the net release of dopamine at the Ventral Tegmental Area -Nucleus Accumbens (VTA-NAc) reward site. The Genetic Addiction Risk Severity (GARS) test and pro-dopamine regulator nutraceutical KB220 were combined to induce "dopamine homeostasis" across the brain reward circuitry. This article aims to encourage four future actionable items: 1) the neurophysiologically accurate designation of, for example, "Hyperdopameism /Hyperdopameism" to replace the blaming nomenclature like alcoholism; 2) encouraging continued research into the nature of dysfunctional brainstem neurotransmitters across the brain reward circuitry; 3) early identification of people at risk for all RDS behaviors as a brain check (cognitive testing); 4) induction of dopamine homeostasis using "precision behavioral management" along with the coupling of GARS and precision Kb220 variants; 5) utilization of promising potential treatments include neuromodulating modalities such as Transmagnetic stimulation (TMS) and Deep Brain Stimulation(DBS), which target different areas of the neural circuitry involved in addiction and even neuroimmune agents like N-acetyl-cysteine.
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Affiliation(s)
- Kenneth Blum
- Division of Addiction Research & Education, Center for Exercise, Sports and Mental Health, Western University Health Sciences, Pomona, CA, USA; The Kenneth Blum Behavioral & Neurogenetic Institute, LLC., Austin, TX, USA; Department of Molecular Biology and Adelson School of Medicine, Ariel University, Ariel, Israel.
| | - J Wesson Ashford
- Department of Psychiatry and Behavioral Sciences, Stanford University, Palo Alto, CA, USA; War Related Illness & Injury Study Center, VA Palo Alto Health Care System, Palo Alto, CA, USA
| | - Babak Kateb
- Brain Mapping Foundation, Los Angeles, CA, USA; National Center for Nanobioelectronic, Los Angeles, CA, USA; Brain Technology and Innovation Park, Los Angeles, CA, USA
| | | | - Eric Braverman
- The Kenneth Blum Behavioral & Neurogenetic Institute, LLC., Austin, TX, USA
| | - Catherine A Dennen
- Department of Family Medicine, Jefferson Health Northeast, Philadelphia, PA, USA
| | - David Baron
- Division of Addiction Research & Education, Center for Exercise, Sports and Mental Health, Western University Health Sciences, Pomona, CA, USA
| | - Rajendra Badgaiyan
- Department of Psychiatry, South Texas Veteran Health Care System, Audie L. Murphy Memorial VA Hospital, San Antonio, TX, USA; Long School of Medicine, University of Texas Medical Center, San Antonio, TX, USA
| | - Igor Elman
- Center for Pain and the Brain (PAIN Group), Department of Anesthesiology, Critical Care & Pain Medicine, Boston Children's Hospital, Waltham, MA, USA; Cambridge Health Alliance, Harvard Medical School, Cambridge, MA, USA
| | - Jean Lud Cadet
- Molecular Neuropsychiatry Research Branch, NIH National Institute on Drug Abuse, Bethesda, MD, USA
| | - Panayotis K Thanos
- Department of Psychology & Behavioral Neuropharmacology and Neuroimaging Laboratory on Addictions (BNNLA), Clinical Research Institute on Addictions, Department of Pharmacology and Toxicology, University at Buffalo, Buffalo, NY, USA
| | - Colin Hanna
- Department of Psychology & Behavioral Neuropharmacology and Neuroimaging Laboratory on Addictions (BNNLA), Clinical Research Institute on Addictions, Department of Pharmacology and Toxicology, University at Buffalo, Buffalo, NY, USA
| | - Abdalla Bowirrat
- Department of Molecular Biology and Adelson School of Medicine, Ariel University, Ariel, Israel
| | | | - Vicky Yamamoto
- Brain Mapping Foundation, Los Angeles, CA, USA; National Center for Nanobioelectronic, Los Angeles, CA, USA; Brain Technology and Innovation Park, Los Angeles, CA, USA; Society for Brain Mapping and Therapeutics, Los Angeles, CA, USA; USC-Norris Comprehensive Cancer Center, Los Angeles, CA, USA
| | | | - Thomas McLaughlin
- Division of Reward Deficiency Research, Reward Deficiency Syndrome Clinics of America, Austin, TX, USA
| | - Mlan Makale
- Department of Radiation Medicine and Applied Sciences, University of California San Diego, La Jolla, CA, USA
| | - Mark S Gold
- Department of Psychiatry, Washington College of Medicine, St. Louis, MO, USA
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Differential association between the GLP1R gene variants and brain functional connectivity according to the severity of alcohol use. Sci Rep 2022; 12:13027. [PMID: 35906358 PMCID: PMC9338323 DOI: 10.1038/s41598-022-17190-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 07/21/2022] [Indexed: 11/08/2022] Open
Abstract
Growing evidence suggests that the glucagon-like peptide-1 (GLP-1) system is involved in mechanisms underlying alcohol seeking and consumption. Accordingly, the GLP-1 receptor (GLP-1R) has begun to be studied as a potential pharmacotherapeutic target for alcohol use disorder (AUD). The aim of this study was to investigate the association between genetic variation at the GLP-1R and brain functional connectivity, according to the severity of alcohol use. Participants were 181 individuals categorized as high-risk (n = 96) and low-risk (n = 85) alcohol use, according to their AUD identification test (AUDIT) score. Two uncommon single nucleotide polymorphisms (SNPs), rs6923761 and rs1042044, were selected a priori for this study because they encode amino-acid substitutions with putative functional consequences on GLP-1R activity. Genotype groups were based on the presence of the variant allele for each of the two GLP-1R SNPs of interest [rs6923761: AA + AG (n = 65), GG (n = 116); rs1042044: AA + AC (n = 114), CC (n = 67)]. Resting-state functional MRI data were acquired for 10 min and independent component (IC) analysis was conducted. Multivariate analyses of covariance (MANCOVA) examined the interaction between GLP-1R genotype group and AUDIT group on within- and between-network connectivity. For rs6923761, three ICs showed significant genotype × AUDIT interaction effects on within-network connectivity: two were mapped onto the anterior salience network and one was mapped onto the visuospatial network. For rs1042044, four ICs showed significant interaction effects on within-network connectivity: three were mapped onto the dorsal default mode network and one was mapped onto the basal ganglia network. For both SNPs, post-hoc analyses showed that in the group carrying the variant allele, high versus low AUDIT was associated with stronger within-network connectivity. No significant effects on between-network connectivity were found. In conclusion, genetic variation at the GLP-1R was differentially associated with brain functional connectivity in individuals with low versus high severity of alcohol use. Significant findings in the salience and default mode networks are particularly relevant, given their role in the neurobiology of AUD and addictive behaviors.
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Strong and weak cross-inheritance of substance use disorders in a nationally representative sample. Mol Psychiatry 2022; 27:1742-1753. [PMID: 34759357 PMCID: PMC9085976 DOI: 10.1038/s41380-021-01370-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2021] [Revised: 10/18/2021] [Accepted: 10/19/2021] [Indexed: 12/21/2022]
Abstract
Substance use disorders (SUDs) are moderately to highly heritable and are in part cross-transmitted genetically, as observed in twin and family studies. We performed exome-focused genotyping to examine the cross-transmission of four SUDs: alcohol use disorder (AUD, n = 4487); nicotine use disorder (NUD, n = 4394); cannabis use disorder (CUD, n = 954); and nonmedical prescription opioid use disorder (NMPOUD, n = 346) within a large nationally representative sample (n = 36,309), the National Epidemiologic Survey on Alcohol and Related Conditions-III (NESARC-III). All diagnoses were based on in-person structured psychiatric interview (AUDADIS-5). SUD cases were compared alone and together to 3959 "super controls" who had neither a SUD nor a psychiatric disorder using an exome-focused array assaying 363,496 SNPs, yielding a representative view of within-disorder and cross-disorder genetic influences on SUDs. The 29 top susceptibility genes for one or more SUDs overlapped highly with genes previously implicated by GWAS of SUD. Polygenic scores (PGS) were computed within the European ancestry (EA) component of the sample (n = 12,505) using summary statistics from each of four clinically distinct SUDs compared to the 3959 "super controls" but then used for two distinctly different purposes: to predict SUD severity (mild, moderate, or severe) and to predict each of the other 3 SUDs. Our findings based on PGS highlight shared and unshared genetic contributions to the pathogenesis of SUDs, confirming the strong cross-inheritance of AUD and NUD as well as the distinctiveness of inheritance of opioid use disorder.
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5
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Veerappa A, Pendyala G, Guda C. A systems omics-based approach to decode substance use disorders and neuroadaptations. Neurosci Biobehav Rev 2021; 130:61-80. [PMID: 34411560 PMCID: PMC8511293 DOI: 10.1016/j.neubiorev.2021.08.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 07/23/2021] [Accepted: 08/14/2021] [Indexed: 11/15/2022]
Abstract
Substance use disorders (SUDs) are a group of neuropsychiatric conditions manifesting due to excessive dependence on potential drugs of abuse such as psychostimulants, opioids including prescription opioids, alcohol, inhalants, etc. Experimental studies have generated enormous data in the area of SUDs, but outcomes from such data have remained largely fragmented. In this review, we attempt to coalesce these data points providing an important first step towards our understanding of the etiology of SUDs. We propose and describe a 'core addictome' pathway that behaves central to all SUDs. Besides, we also have made some notable observations paving way for several hypotheses; MECP2 behaves as a master switch during substance use; five distinct gene clusters were identified based on respective substance addiction; a central cluster of genes serves as a hub of the addiction pathway connecting all other substance addiction clusters. In addition to describing these findings, we have emphasized the importance of some candidate genes that are of substantial interest for further investigation and serve as high-value targets for translational efforts.
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Affiliation(s)
- Avinash Veerappa
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Gurudutt Pendyala
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Department of Anesthesiology, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Child Health Research Institute, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Chittibabu Guda
- Department of Genetics, Cell Biology and Anatomy, University of Nebraska Medical Center, Omaha, NE, 68198, USA; Center for Biomedical Informatics Research and Innovation, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
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6
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Meng Y, Groth SW, Hodgkinson CA, Mariani TJ. Serotonin system genes contribute to the susceptibility to obesity in Black adolescents. Obes Sci Pract 2021; 7:441-449. [PMID: 34401202 PMCID: PMC8346375 DOI: 10.1002/osp4.511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/15/2021] [Accepted: 03/16/2021] [Indexed: 12/29/2022] Open
Abstract
OBJECTIVE The importance of the central and peripheral serotonin systems in regulating energy balance and obesity development has been highlighted in animal models. Yet, the role of both serotonin systems has not been systematically assessed in humans. The purpose of this study was to investigate the association of genes within both serotonin systems with obesity outcomes in black adolescents. METHODS African-American adolescents (n = 1052) whose mothers participated the Memphis New Mother's Study were assessed. In total, 110 polymorphisms mapped to 10 serotonin genes were examined for their associations with standardized body mass index (BMI-z) scores and waist circumferences using generalized estimating equation models. RESULTS Over 39% of adolescents were overweight or had obesity. Three single nucleotide polymorphisms (SNPs) within TPH2, HTR3B, and SLC6A4, were significantly associated with BMI-z scores (p < 1.7 × 10-3). Two SNPs in TPH2 were nominally associated with waist circumferences. One SNP in HTR2C was associated with BMI-z scores (p = 0.001) and waist circumferences (p = 0.005) only in girls. Tissue-specific expression indicates that three identified genes are predominantly expressed in the brain. CONCLUSION The central serotonin system may play a key role in obesity development in black adolescents. Future studies are warranted to explore additional serotonin system genes and their potential obesogenic mechanisms in humans.
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Affiliation(s)
- Ying Meng
- School of NursingUniversity of RochesterRochesterNew YorkUSA
| | - Susan W. Groth
- School of NursingUniversity of RochesterRochesterNew YorkUSA
| | - Colin A. Hodgkinson
- Lab of NeurogeneticsDivision of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and AlcoholismRockvilleMarylandUSA
| | - Thomas J. Mariani
- Department of PediatricsUniversity of Rochester Medical CenterRochesterNew YorkUSA
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Browning BD, Schwandt ML, Farokhnia M, Deschaine SL, Hodgkinson CA, Leggio L. Leptin Gene and Leptin Receptor Gene Polymorphisms in Alcohol Use Disorder: Findings Related to Psychopathology. Front Psychiatry 2021; 12:723059. [PMID: 34421692 PMCID: PMC8377199 DOI: 10.3389/fpsyt.2021.723059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/12/2021] [Indexed: 11/13/2022] Open
Abstract
Comorbidity between alcohol use disorder (AUD) and other addictive and psychiatric disorders is highly prevalent and disabling; however, the underlying biological correlates are not fully understood. Leptin is a peptide hormone known for its role in energy homeostasis and food intake. Furthermore, leptin plays a key role in the activity of the hypothalamic-pituitary-adrenal (HPA) axis and of several neurotransmitter systems that regulate emotionality and behavior. However, human studies that have investigated circulating leptin levels in relation to AUD and affective disorders, such as anxiety and depression, are conflicting. Genetic-based analyses of the leptin gene (LEP) and leptin receptor gene (LEPR) have the potential of providing more insight into the potential role of the leptin system in AUD and comorbid psychopathology. The aim of the current study was to investigate whether genotypic variations at LEP and LEPR are associated with measures of alcohol use, nicotine use, anxiety, and depression, all of which represent common comorbidities with AUD. Haplotype association analyses were performed, using data from participants enrolled in screening and natural history protocols at the National Institute on Alcohol Abuse and Alcoholism (NIAAA). Analyses were performed separately in European Americans and African Americans due to the variation in haplotype diversity for most genes between these groups. In the European American group, one LEP haplotype (EB2H4) was associated with lower odds of having a current AUD diagnosis, two LEPR haplotypes (EB7H3, EB8H3) were associated with lower cigarette pack years and two LEPR haplotypes (EB7H2, EB8H2) were associated with higher State-Trait Anxiety Inventory (STAI-T) scores. In the African American group, one LEP haplotype (AB2H8) was associated with higher cigarette pack years and one LEP haplotype (AB3H2) was associated with lower Fagerström Test for Nicotine Dependence (FTND) scores. Overall, this study found that variations in the leptin and leptin receptor genes are associated with measures of alcohol use, nicotine use, and anxiety. While this preliminary study adds support for a role of the leptin system in AUD and psychopathologies, additional studies are required to fully understand the underlying mechanisms and potential therapeutic implications of these findings.
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Affiliation(s)
- Brittney D Browning
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, MD, United States
| | - Melanie L Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Bethesda, MD, United States
| | - Mehdi Farokhnia
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, MD, United States.,Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Sara L Deschaine
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, MD, United States
| | - Colin A Hodgkinson
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Rockville, MD, United States
| | - Lorenzo Leggio
- Clinical Psychoneuroendocrinology and Neuropsychopharmacology Section, Translational Addiction Medicine Branch, National Institute on Drug Abuse Intramural Research Program and National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Baltimore, MD, United States.,Medication Development Program, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, Baltimore, MD, United States.,Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, Brown University School of Public Health, Providence, RI, United States.,Division of Addiction Medicine, Department of Medicine, School of Medicine, Johns Hopkins University, Baltimore, MD, United States.,Department of Neuroscience, Georgetown University Medical Center, Washington, DC, United States
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8
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Soundararajan S, Kazmi N, Brooks AT, Krumlauf M, Schwandt ML, George DT, Hodgkinson CA, Wallen GR, Ramchandani VA. FAAH and CNR1 Polymorphisms in the Endocannabinoid System and Alcohol-Related Sleep Quality. Front Psychiatry 2021; 12:712178. [PMID: 34566715 PMCID: PMC8458733 DOI: 10.3389/fpsyt.2021.712178] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 08/09/2021] [Indexed: 12/02/2022] Open
Abstract
Sleep disturbances are common among individuals with alcohol use disorder (AUD) and may not resolve completely with short-term abstinence from alcohol, potentially contributing to relapse to drinking. The endocannabinoid system (ECS) is associated with both sleep and alcohol consumption, and genetic variation in the ECS may underlie sleep-related phenotypes among individuals with AUD. In this study, we explored the influence of genetic variants in the ECS (Cannabinoid receptor 1/CNR1: rs806368, rs1049353, rs6454674, rs2180619, and Fatty Acid Amide Hydrolase/FAAH rs324420) on sleep quality in individuals with AUD (N = 497) and controls without AUD (N = 389). We assessed subjective sleep quality (from the Pittsburgh Sleep Quality Index/PSQI) for both groups at baseline and objective sleep efficiency and duration (using actigraphy) in a subset of individuals with AUD at baseline and after 4 weeks of inpatient treatment. We observed a dose-dependent relationship between alcohol consumption and sleep quality in both AUD and control groups. Sleep disturbance, a subscale measure in PSQI, differed significantly among CNR1 rs6454674 genotypes in both AUD (p = 0.015) and controls (p = 0.016). Only among controls, neuroticism personality scores mediated the relationship between genotype and sleep disturbance. Objective sleep measures (sleep efficiency, wake bouts and wake after sleep onset), differed significantly by CNR1 rs806368 genotype, both at baseline (p = 0.023, 0.029, 0.015, respectively) and at follow-up (p = 0.004, p = 0.006, p = 0.007, respectively), and by FAAH genotype for actigraphy recorded sleep duration at follow-up (p = 0.018). These relationships suggest a significant role of the ECS in alcohol-related sleep phenotypes.
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Affiliation(s)
- Soundarya Soundararajan
- Human Psychopharmacology Laboratory, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Narjis Kazmi
- National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Alyssa T Brooks
- National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Michael Krumlauf
- National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Melanie L Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - David T George
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Colin A Hodgkinson
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
| | - Gwenyth R Wallen
- National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Vijay A Ramchandani
- Human Psychopharmacology Laboratory, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, United States
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Blum K, Baron D, Jalali R, Modestino EJ, Steinberg B, Elman I, Badgaiyan RD, Gold MS. Polygenic and multi locus heritability of alcoholism: Novel therapeutic targets to overcome psychological deficits. ACTA ACUST UNITED AC 2020; 7. [PMID: 34707891 PMCID: PMC8547332 DOI: 10.15761/jsin.1000240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kenneth Blum
- Western University Health Sciences, Pomona, CA, USA.,Institute of Psychology, ELTE Eotvos Lorand University, Budapest, Hungary.,Division of Nutrigenomics, Genomic Testing Center Geneus Health, LLC, San Antonio, TX, USA.,Department of Psychiatry, University of Vermont, VT, USA.,Department of Psychiatry, Wright University Boonshoff School of Medicine, Dayton, OH., USA.,The Kenneth Blum Behavioral Neurogenetic Institute (Division of iVitalize Inc.), Austin, Tx, USA
| | - David Baron
- Western University Health Sciences, Pomona, CA, USA
| | - Rehan Jalali
- The Kenneth Blum Behavioral Neurogenetic Institute (Division of iVitalize Inc.), Austin, Tx, USA
| | | | | | - Igor Elman
- Department of Psychiatry, Harvard School of Medicine, Cambridge, MA, USA
| | - Rajendra D Badgaiyan
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA.,Department of Psychiatry, South Texas Veteran Health Care System, Audie L. Murphy I Memorial VA Hospital, San Antonio, TX. and Long School of Medicine, University of Texas Medical Center, San Antonio TX, USA
| | - Mark S Gold
- Department of Psychiatry, Washington University School of Medicine, St. Louis, Mo. USA
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10
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Saloner R, Cherner M, Sundermann EE, Watson CWM, Iudicello JE, Letendre SL, Kumar A, Ellis RJ. COMT val158met genotype alters the effects of methamphetamine dependence on dopamine and dopamine-related executive function: preliminary findings. Psychiatry Res 2020; 292:113269. [PMID: 32739643 PMCID: PMC7530039 DOI: 10.1016/j.psychres.2020.113269] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 06/24/2020] [Accepted: 06/30/2020] [Indexed: 11/19/2022]
Abstract
The Met-allele of the COMT Val158Met polymorphism slows metabolism and increases bioavailability of dopamine (DA) in the prefrontal cortex compared to the Val-allele. Healthy Met-carriers outperform Val-carriers on executive function (EF) tests, yet this 'advantage' disappears in methamphetamine (METH) dependence. Met-carriers may be disproportionately vulnerable to METH-related perturbations of DA, yet it is unknown whether COMT modulates METH effects on CSF DA biomarkers. Participants were 75 METH+ and 47 METH- men who underwent neurocognitive testing, COMT genotyping, and lumbar puncture. CSF was assayed for DA and its metabolite, homovanillic acid (HVA). Separate linear models regressed DA, HVA, and HVA/DA ratios on COMT, METH and their interaction. Pearson correlations examined associations between DA and EF. Significant interactions indicated that METH+ had lower DA and higher HVA/DA ratios among Met/Met, but not Val/Met-or Val/Val. Met/Met-exhibited the highest DA levels among METH-, whereas DA levels were comparable between Met/Met-and Val-carriers among METH+. Higher DA correlated with better EF in METH- Met/Met, but did not predict EF in the entire sample. DA was expectedly higher in METH- Met/Met, yet a discordant genotype-phenotype profile emerged in METH+ Met/Met, consistent with the notion that slow DA clearance exacerbates METH-associated DA dysregulation.
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Affiliation(s)
- Rowan Saloner
- San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA.
| | - Mariana Cherner
- Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA
| | - Erin E Sundermann
- Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA
| | - Caitlin Wei-Ming Watson
- San Diego State University/University of California, San Diego Joint Doctoral Program in Clinical Psychology, San Diego, CA, USA; Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA
| | - Jennifer E Iudicello
- Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA
| | - Scott L Letendre
- Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA
| | - Adarsh Kumar
- Department of Psychiatry and Behavioral Sciences, University of Miami, Miami, FL, USA
| | - Ronald J Ellis
- Department of Psychiatry, University of California, San Diego, HIV Neurobehavioral Research Program, San Diego, CA, USA; Department of Neurosciences, University of California, San Diego, San Diego, CA, USA
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11
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Spagnolo PA, Norato G, Maurer CW, Goldman D, Hodgkinson C, Horovitz S, Hallett M. Effects of TPH2 gene variation and childhood trauma on the clinical and circuit-level phenotype of functional movement disorders. J Neurol Neurosurg Psychiatry 2020; 91:814-821. [PMID: 32576619 PMCID: PMC7402460 DOI: 10.1136/jnnp-2019-322636] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 03/19/2020] [Accepted: 05/06/2020] [Indexed: 12/20/2022]
Abstract
BACKGROUND Functional movement disorders (FMDs), part of the wide spectrum of functional neurological disorders (conversion disorders), are common and often associated with a poor prognosis. Nevertheless, little is known about their neurobiological underpinnings, particularly with regard to the contribution of genetic factors. Because FMD and stress-related disorders share a common core of biobehavioural manifestations, we investigated whether variants in stress-related genes also contributed, directly and interactively with childhood trauma, to the clinical and circuit-level phenotypes of FMD. METHODS Sixty-nine patients with a 'clinically defined' diagnosis of FMD were genotyped for 18 single-nucleotide polymorphisms (SNPs) from 14 candidate genes. FMD clinical characteristics, psychiatric comorbidity and symptomatology, and childhood trauma exposure were assessed. Resting-state functional connectivity data were obtained in a subgroup of 38 patients with FMD and 38 age-matched and sex-matched healthy controls. Amygdala-frontal connectivity was analysed using a whole-brain seed-based approach. RESULTS Among the SNPs analysed, a tryptophan hydroxylase 2 (TPH2) gene polymorphism-G703T-significantly predicted clinical and neurocircuitry manifestations of FMD. Relative to GG homozygotes, T carriers were characterised by earlier FMD age of onset and decreased connectivity between the right amygdala and the middle frontal gyrus. Furthermore, the TPH2 genotype showed a significant interaction with childhood trauma in predicting worse symptom severity. CONCLUSIONS This is, to our knowledge, the first study showing that the TPH2 genotype may modulate FMD both directly and interactively with childhood trauma. Because both this polymorphism and early-life stress alter serotonin levels, our findings support a potential molecular mechanism modulating FMD phenotype.
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Affiliation(s)
- Primavera A Spagnolo
- Human Motor Control Section, Medical Neurology Branch, National Institute on Nuerological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Gina Norato
- Office of Biostatistics, National Institute on Neurological Disorders and Stroke, National Institutes of Health, Bethesda, Maryland, USA, Bethesda, Maryland, USA
| | - Carine W Maurer
- Department of Neurology, Stony Brook University Renaissance School of Medicine, Stony Brook, New York, USA
| | - David Goldman
- National Institute of Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Colin Hodgkinson
- National Institute of Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland, USA
| | - Silvina Horovitz
- Human Motor Control Section, Medical Neurology Branch, National Institute on Nuerological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Mark Hallett
- Human Motor Control Section, Medical Neurology Branch, National Institute on Nuerological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
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12
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Randesi M, Levran O, van den Brink W, Blanken P, van Ree JM, Ott J, Kreek MJ. Further evidence for the association of GAL, GALR1 and NPY1R variants with opioid dependence. Pharmacogenomics 2020; 21:903-917. [PMID: 32757697 PMCID: PMC7487975 DOI: 10.2217/pgs-2020-0045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aim: Heroin addiction is a chronic, relapsing disease that has genetic and environmental, including drug-induced, contributions. Stress influences the development of addictions. This study was conducted to determine if variants in stress-related genes are associated with opioid dependence (OD). Patients & methods: One hundred and twenty variants in 26 genes were analyzed in 597 Dutch subjects. Patients included 281 OD in methadone maintenance with or without heroin-assisted treatment and 316 controls. Results: Twelve SNPs in seven genes showed a nominally significant association with OD. Experiment-wise significant associations (p < 0.05) were found for three SNP pairs, through an interaction effect: NPY1R/GAL rs4691910/rs1893679, NPY1R/GAL rs4691910/rs3136541 and GALR1/GAL rs9807208/rs3136541. Conclusion: This study lends more evidence to previous reports of association of stress-related variants with heroin dependence.
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Affiliation(s)
- Matthew Randesi
- Laboratory of The Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA,Author for correspondence:
| | - Orna Levran
- Laboratory of The Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Wim van den Brink
- Department of Psychiatry, Amsterdam Institute for Addiction Research, Academic Medical Center, University of Amsterdam, PO Box 22660, 1100DD Amsterdam, The Netherlands
| | - Peter Blanken
- Parnassia Addiction Research Centre (Brijder Addiction Treatment), PO Box 53002, 2505 AA The Hague, The Netherlands
| | - Jan M van Ree
- Brain Center Rudolf Magnus, University Medical Center, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Jurg Ott
- Laboratory of Statistical Genetics, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Mary J Kreek
- Laboratory of The Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
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13
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Moses TE, Burmeister M, Greenwald MK. Heroin delay discounting and impulsivity: Modulation by DRD1 genetic variation. Addict Biol 2020; 25:e12777. [PMID: 31192519 DOI: 10.1111/adb.12777] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 04/11/2019] [Accepted: 04/27/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND Dopamine D1 receptors (encoded by DRD1) are implicated in drug addiction and high-risk behaviors. Delay discounting (DD) procedures measure decisional balance between choosing smaller/sooner rewards vs larger/later rewards. Individuals with higher DD (rapid discounting) are prone to maladaptive behaviors that provide immediate reinforcement (eg, substance use). DRD1 variants have been linked with increased DD (in healthy volunteers) and opioid abuse. This study determined whether four dopaminergic functional variants modulated heroin DD and impulsivity. METHODS Substance use, DD, and genotype data (DRD1 rs686 and rs5326, DRD3 rs6280, COMT rs4680) were obtained from 106 current heroin users. Subjects completed an array of DD choices during two imagined conditions: heroin satiation and withdrawal. Rewards were expressed as $10 heroin bag units, with maximum delayed amount of 30 bags. Delays progressively increased from 3 to 96 hours. RESULTS DRD1 rs686 (A/A, n = 25; G/A, n = 56; G/G, n = 25) was linearly related to the difference in heroin DD (area under the curve; AUC) between the heroin satiation and withdrawal conditions; specifically, G/G homozygotes had a significantly smaller (satiation minus withdrawal) AUC difference score had higher drug-use impulsivity questionnaire scores, relative to A/A homozygotes, with G/A intermediate. DRD3 and COMT variants were not associated with these DD and impulsivity outcomes. CONCLUSION DRD1 rs686 modulated the difference in heroin DD score between pharmacological states and was associated with drug-use impulsivity. These data support a role of DRD1 in opioid DD and impulsive behaviors.
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14
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COMT Val158Met Polymorphism, Cardiometabolic Risk, and Nadir CD4 Synergistically Increase Risk of Neurocognitive Impairment in Men Living With HIV. J Acquir Immune Defic Syndr 2020; 81:e148-e157. [PMID: 31107306 DOI: 10.1097/qai.0000000000002083] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The Val allele of the Val158Met single-nucleotide polymorphism of the catechol-o-methyltransferase gene (COMT) results in faster metabolism and reduced bioavailability of dopamine (DA). Among persons living with HIV, Val carriers display neurocognitive deficits relative to Met carriers, presumably due to exacerbation of HIV-related depletion of DA. COMT may also impact neurocognition by modulating cardiometabolic function, which is often dysregulated among persons living with HIV. We examined the interaction of COMT, cardiometabolic risk, and nadir CD4 on neurocognitive impairment (NCI) among HIV+ men. METHODS Three hundred twenty-nine HIV+ men underwent COMT genotyping and neurocognitive and neuromedical assessments. Cohort-standardized z scores for body mass index, systolic blood pressure, glucose, triglycerides, and high-density lipoprotein cholesterol were averaged to derive a cardiometabolic risk score (CMRS). NCI was defined as demographically adjusted global deficit score of ≥0.5. Logistic regression modeled NCI as a function of COMT, CMRS, and their interaction, covarying for estimated premorbid function, race/ethnicity, and HIV-specific characteristics. Follow-up analysis included the 3-way interaction of COMT, CMRS, and nadir CD4. RESULTS Genotypes were 81 (24.6%) Met/Met, 147 (44.7%) Val/Met, and 101 (30.7%) Val/Val. COMT interacted with CMRS (P = 0.02) such that higher CMRS increased risk of NCI among Val/Val [odds ratio (OR) = 2.13, P < 0.01], but not Val/Met (OR = 0.93, P > 0.05) or Met/Met (OR = 0.92, P > 0.05) carriers. Among Val/Val, nadir CD4 moderated the effect of CMRS (P < 0.01) such that higher CMRS increased likelihood of NCI only when nadir CD4 <180. DISCUSSION Results suggest a tripartite model by which genetically driven low DA reserve, cardiometabolic dysfunction, and historical immunosuppression synergistically enhance risk of NCI among HIV+ men, possibly due to neuroinflammation and oxidative stress.
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15
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Saloner R, Paolillo EW, Kohli M, Murray SS, Moore DJ, Grant I, Cherner M. Genetic variation in alcohol dehydrogenase is associated with neurocognition in men with HIV and history of alcohol use disorder: preliminary findings. J Neurovirol 2020; 26:214-225. [PMID: 31933193 DOI: 10.1007/s13365-019-00825-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 11/22/2019] [Accepted: 12/17/2019] [Indexed: 12/12/2022]
Abstract
The co-occurrence of HIV and alcohol use disorder (AUD) amplifies risk for neural injury and neurocognitive deficits. However, the substantial neurocognitive heterogeneity across HIV+/AUD+ individuals suggests inter-individual differences in vulnerability to the neurotoxicity of comorbid HIV/AUD. Genetic variation in alcohol dehydrogenase (ADH), which metabolizes ethanol, may contribute to inter-individual neurocognitive variability. We evaluated associations between five ADH single-nucleotide polymorphisms (SNPs) and neurocognition in men stratified by HIV and lifetime AUD status. Neurobehavioral assessments were administered to 153 men. Three-way ANOVAs examined the interaction of HIV, AUD, and ADH SNPs on global and domain-specific demographically corrected T scores. Follow-up ANCOVAs adjusted for age, estimated verbal IQ, depression, and remote non-alcohol substance use disorders. HIV/AUD groups differed globally and for verbal fluency, working memory, executive function, and processing speed T scores specifically, with HIV+/AUD+ exhibiting the poorest performance. ADH4 (rs1126671) was associated with large effects on working memory (d = - 1.16, p = .001) and executive function (d = - 0.77, p = .028) selectively in HIV+/AUD+, which remained significant in ANCOVA models. ADH1A (rs3819197) moderated the deleterious effects of HIV+/AUD+ on processing speed such that HIV+/AUD+ related to slower information processing in A allele carriers but not GG homozygotes (ps < 0.03). Preliminary findings suggest genetic variation in the ADH pathway moderates the deleterious neurocognitive effects of comorbid HIV/AUD. Differential metabolism of heavy ethanol exposure may compromise neurocognition under conditions of neurobiological stress, such as in HIV infection. The functional effects on ethanol metabolism of ADH SNPs examined in this study remain poorly understood, warranting further examination of pharmacokinetic mechanisms mediating ADH gene-neurobehavior relationships in HIV.
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Affiliation(s)
- Rowan Saloner
- Joint Doctoral Program in Clinical Psychology, San Diego State University/University of California San Diego, San Diego, CA, USA. .,Department of Psychiatry, HIV Neurobehavioral Research Program, University of California San Diego, San Diego, CA, USA.
| | - Emily W Paolillo
- Joint Doctoral Program in Clinical Psychology, San Diego State University/University of California San Diego, San Diego, CA, USA.,Department of Psychiatry, HIV Neurobehavioral Research Program, University of California San Diego, San Diego, CA, USA
| | - Maulika Kohli
- Joint Doctoral Program in Clinical Psychology, San Diego State University/University of California San Diego, San Diego, CA, USA.,Department of Psychiatry, HIV Neurobehavioral Research Program, University of California San Diego, San Diego, CA, USA
| | - Sarah S Murray
- Department of Pathology, University of California San Diego, La Jolla, CA, USA
| | - David J Moore
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California San Diego, San Diego, CA, USA
| | - Igor Grant
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California San Diego, San Diego, CA, USA
| | - Mariana Cherner
- Department of Psychiatry, HIV Neurobehavioral Research Program, University of California San Diego, San Diego, CA, USA
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16
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Sun J, Kranzler HR, Gelernter J, Bi J. A genome-wide association study of cocaine use disorder accounting for phenotypic heterogeneity and gene–environment interaction. J Psychiatry Neurosci 2020; 45:34-44. [PMID: 31490055 PMCID: PMC6919916 DOI: 10.1503/jpn.180098] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND Phenotypic heterogeneity and complicated gene–environment interplay in etiology are among the primary factors that hinder the identification of genetic variants associated with cocaine use disorder. METHODS To detect novel genetic variants associated with cocaine use disorder, we derived disease traits with reduced phenotypic heterogeneity using cluster analysis of a study sample (n = 9965). We then used these traits in genome-wide association tests, performed separately for 2070 African Americans and 1570 European Americans, using a new mixed model that accounted for the moderating effects of 5 childhood environmental factors. We used an independent sample (918 African Americans, 1382 European Americans) for replication. RESULTS The cluster analysis yielded 5 cocaine use disorder subtypes, of which subtypes 4 (n = 3258) and 5 (n = 1916) comprised heavy cocaine users, had high heritability estimates (h2 = 0.66 and 0.64, respectively) and were used in association tests. Seven of the 13 identified genetic loci in the discovery phase were available in the replication sample. In African Americans, rs114492924 (discovery p = 1.23 × E−8), a single nucleotide polymorphism in LINC01411, was replicated in the replication sample (p = 3.63 × E−3). In a meta-analysis that combined the discovery and replication results, 3 loci in African Americans were significant genome-wide: rs10188036 in TRAK2 (p = 2.95 × E−8), del-1:15511771 in TMEM51 (p = 9.11 × E−10) and rs149843442 near LPHN2 (p = 3.50 × E−8). LIMITATIONS Lack of data prevented us from replicating 6 of the 13 identified loci. CONCLUSION Our results demonstrate the importance of considering phenotypic heterogeneity and gene–environment interplay in detecting genetic variations that contribute to cocaine use disorder, because new genetic loci have been identified using our novel analytic method.
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Affiliation(s)
- Jiangwen Sun
- From the Department of Computer Science and Engineering, University of Connecticut, School of Engineering, Storrs, CT (Sun, Bi); the University of Pennsylvania Perelman School of Medicine, Department of Psychiatry, Center for Studies of Addiction and Corporal Michael Crescenz VAMC, Philadelphia, PA (Kranzler); and the Yale University School of Medicine, Department of Psychiatry, Division of Human Genetics and Departments of Genetics and Neurobiology; and VA CT Healthcare Center, New Haven, CT (Gelernter)
| | - Henry R. Kranzler
- From the Department of Computer Science and Engineering, University of Connecticut, School of Engineering, Storrs, CT (Sun, Bi); the University of Pennsylvania Perelman School of Medicine, Department of Psychiatry, Center for Studies of Addiction and Corporal Michael Crescenz VAMC, Philadelphia, PA (Kranzler); and the Yale University School of Medicine, Department of Psychiatry, Division of Human Genetics and Departments of Genetics and Neurobiology; and VA CT Healthcare Center, New Haven, CT (Gelernter)
| | - Joel Gelernter
- From the Department of Computer Science and Engineering, University of Connecticut, School of Engineering, Storrs, CT (Sun, Bi); the University of Pennsylvania Perelman School of Medicine, Department of Psychiatry, Center for Studies of Addiction and Corporal Michael Crescenz VAMC, Philadelphia, PA (Kranzler); and the Yale University School of Medicine, Department of Psychiatry, Division of Human Genetics and Departments of Genetics and Neurobiology; and VA CT Healthcare Center, New Haven, CT (Gelernter)
| | - Jinbo Bi
- From the Department of Computer Science and Engineering, University of Connecticut, School of Engineering, Storrs, CT (Sun, Bi); the University of Pennsylvania Perelman School of Medicine, Department of Psychiatry, Center for Studies of Addiction and Corporal Michael Crescenz VAMC, Philadelphia, PA (Kranzler); and the Yale University School of Medicine, Department of Psychiatry, Division of Human Genetics and Departments of Genetics and Neurobiology; and VA CT Healthcare Center, New Haven, CT (Gelernter)
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17
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Cherner M, Watson CWM, Saloner R, Halpin LE, Minassian A, Murray SS, Vaida F, Bousman C, Everall I. Adverse effect of catechol-O-methyltransferase (COMT) Val158Met met/met genotype in methamphetamine-related executive dysfunction. Addict Behav 2019; 98:106023. [PMID: 31301644 PMCID: PMC6733518 DOI: 10.1016/j.addbeh.2019.06.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Revised: 06/03/2019] [Accepted: 06/10/2019] [Indexed: 01/19/2023]
Abstract
INTRODUCTION The Val allele of the Val158Met single-nucleotide polymorphism of the catechol-o-methyltransferase gene (COMT) confers greater catabolism of dopamine (DA) in the prefrontal cortex (PFC) than the Met allele. Met/Met homozygotes typically outperform Val-carriers on tests of executive function (EF), perhaps resulting from increased DA bioavailability. Methamphetamine (METH) causes large releases of DA, which is associated with neurotoxicity and executive dysfunction in chronic METH users. We hypothesized that, contrary to its effect in non-METH-using populations, slower DA clearance conferred by Met/Met will relate to worse EF in METH users. METHODS 149 non-Hispanic White men, stratified by METH dependence (METH+/-) and COMT (Val/Val, Val/Met, Met/Met), completed three tests of EF: Wisconsin Card Sorting Test (WCST), Stroop Color-Word Test (Stroop), and Trail Making Test Part B (Trails B). Demographically-adjusted test scores were averaged to create an EF composite T-score. We examined the interaction of METH and COMT on the EF composite and individual test T-scores, controlling for premorbid functioning and alcohol use. RESULTS METH group differences in EF were evident only among Met/Met carriers (beta = -9.36, p < .001) but not among Val carriers: Val/Met (beta = -1.38, p = .44) and Val/Val (beta = -4.34, p = .10). These effects were most salient on the WCST. CONCLUSIONS In the pre-frontal hyperdopaminergic state triggered by methamphetamine, greater DA inactivation conferred by the Val allele may protect against METH-related executive dysfunction, suggesting genetically-driven differences in vulnerability to METH.
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Affiliation(s)
- Mariana Cherner
- Department of Psychiatry, University of California San Diego, United States.
| | - Caitlin W-M Watson
- Department of Psychiatry, University of California San Diego, United States
| | - Rowan Saloner
- Department of Psychiatry, University of California San Diego, United States
| | - Laura E Halpin
- Department of Psychiatry and Behavioral Sciences, University of California Los Angeles, United States
| | - Arpi Minassian
- Department of Psychiatry, University of California San Diego, United States
| | - Sarah S Murray
- Department of Pathology, University of California San Diego, United States
| | - Florin Vaida
- Department of Family & Preventive Medicine, University of California San Diego, United States
| | - Chad Bousman
- Department of Medical Genetics, University of Calgary, Canada
| | - Ian Everall
- Institute of Psychiatry, Psychology & Neuroscience, King's College, United Kingdom
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18
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Exploratory locomotion, a predictor of addiction vulnerability, is oligogenic in rats selected for this phenotype. Proc Natl Acad Sci U S A 2019; 116:13107-13115. [PMID: 31182603 PMCID: PMC6600920 DOI: 10.1073/pnas.1820410116] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Artificially selected model organisms can reveal hidden features of the genetic architecture of the complex disorders that they model. Addictions are disease phenotypes caused by different intermediate phenotypes and pathways and thereby are potentially highly polygenic. High responder (bHR) and low responder (bLR) rat lines have been selectively bred (b) for exploratory locomotion (EL), a behavioral phenotype correlated with novelty-seeking, impulsive response to reward, and vulnerability to addiction, and is inversely correlated with spontaneous anxiety and depression-like behaviors. The rapid response to selection indicates loci of large effect for EL. Using exome sequencing of HR and LR rats, we identified alleles in gene-coding regions that segregate between the two lines. Quantitative trait locus (QTL) analysis in F2 rats derived from a bHR × bLR intercross confirmed that these regions harbored genes affecting EL. The combined effects of the seven genome-wide significant QTLs accounted for approximately one-third of the total variance in EL, and two-thirds of the variance attributable to genetic factors, consistent with an oligogenic architecture of EL estimated both from the phenotypic distribution of F2 animals and rapid response to selection. Genetic association in humans linked APBA2, the ortholog of the gene at the center of the strongest QTL, with substance use disorders and related behavioral phenotypes. Our finding is also convergent with molecular and animal behavioral studies implicating Apba2 in locomotion. These results provide multilevel evidence for genes/loci influencing EL. They shed light on the genetic architecture of oligogenicity in animals artificially selected for a phenotype modeling a more complex disorder in humans.
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Randesi M, van den Brink W, Levran O, Blanken P, van Ree JM, Ott J, Kreek MJ. VMAT2 gene ( SLC18A2) variants associated with a greater risk for developing opioid dependence. Pharmacogenomics 2019; 20:331-341. [PMID: 30983500 DOI: 10.2217/pgs-2018-0137] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Aim: To determine if selected serotonergic and noradrenergic gene variants are associated with heroin addiction. Subjects & methods: A total of 126 variants in 19 genes in subjects with Dutch European ancestry from The Netherlands. Subjects included 281 opioid-dependent volunteers in methadone maintenance or heroin-assisted treatment, 163 opioid-exposed but not opioid-dependent volunteers who have been using illicit opioids but never became opioid-dependent and 153 healthy controls. Results: Nominal associations were indicated for 20 variants in six genes including an experiment-wise significant association from the combined effect of three SLC18A2 SNPs (rs363332, rs363334 and rs363338) with heroin dependence (pfinal = 0.047). Conclusion: Further studies are warranted to confirm and elucidate the role of these variants in the vulnerability to opioid addiction.
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Affiliation(s)
- Matthew Randesi
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Wim van den Brink
- Department of Psychiatry, Amsterdam Institute for Addiction Research, Academic Medical Center, University of Amsterdam, PO Box 22660, 1100 DD Amsterdam, The Netherlands
| | - Orna Levran
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Peter Blanken
- Department of Psychiatry, Amsterdam Institute for Addiction Research, Academic Medical Center, University of Amsterdam, PO Box 22660, 1100 DD Amsterdam, The Netherlands.,Parnassia Addiction Research Centre (PARC, Brijder Addiction Treatment), PO Box 53002, 2505 AA The Hague, The Netherlands
| | - Jan M van Ree
- Rudolf Magnus Brain Center, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Jurg Ott
- Laboratory of Statistical Genetics, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
| | - Mary Jeanne Kreek
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA
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20
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Alblooshi H, Al Safar H, Fisher HF, Cordell HJ, El Kashef A, Al Ghaferi H, Shawky M, Reece S, Hulse GK, Tay GK. A case-control genome wide association study of substance use disorder (SUD) identifies novel variants on chromosome 7p14.1 in patients from the United Arab Emirates (UAE). Am J Med Genet B Neuropsychiatr Genet 2019; 180:68-79. [PMID: 30556296 DOI: 10.1002/ajmg.b.32708] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/17/2018] [Accepted: 11/21/2018] [Indexed: 12/11/2022]
Abstract
Genome wide association studies (GWASs) have provided insights into the molecular basis of the disorder in different population. This study presents the first GWAS of substance use disorder (SUD) in patients from the United Arab Emirates (UAE). The aim was to identify genetic association(s) that may provide insights into the molecular basis of the disorder. The GWAS discovery cohort consisted of 512 (250 cases and 262 controls) male participants from the UAE. Controls with no prior history of SUD were available from the Emirates family registry. The replication cohort consisted of 520 (415 cases and 105 controls) Australian male Caucasian participants. The GWAS discovery samples were genotyped for 4.6 million single nucleotide polymorphism (SNP). The replication cohort was genotyped using TaqMan assay. The GWAS association analysis identified three potential SNPs rs118129027 (p-value = 6.24 × 10-8 ), rs74477937 (p-value = 8.56 × 10-8 ) and rs78707086 (p-value = 8.55 × 10-8 ) on ch7p14.1, that did not meet the GWAS significance threshold but were highly suggestive. In the replication cohort, the association of the three top SNPs did not reach statistical significance. In a meta-analysis of the discovery and the replication cohorts, there were no strengthen evidence for association of the three SNPs. The top identified rs118129027 overlaps with a regulatory factor (enhancer) region that targets three neighboring genes LOC105375237, LOC105375240, and YAE1D1. The YAE1D1, which represents a potential locus that is involved in regulating translation initiation pathway. Novel associations that require further confirmation were identified, suggesting a new insight to the genetic basis of SUD.
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Affiliation(s)
- Hiba Alblooshi
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Crawley, Western Australia, Australia.,School of Human Science, The University of Western Australia, Crawley, Western Australia, Australia
| | - Habiba Al Safar
- Center of Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates
| | - Holly F Fisher
- Institute of Genetic Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Heather J Cordell
- Institute of Genetic Medicine, Newcastle University, Newcastle Upon Tyne, United Kingdom
| | - Ahmed El Kashef
- National Rehabilitation Center, Abu Dhabi, United Arab Emirates
| | | | - Mansour Shawky
- National Rehabilitation Center, Abu Dhabi, United Arab Emirates
| | - Stuart Reece
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Crawley, Western Australia, Australia
| | - Gary K Hulse
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Crawley, Western Australia, Australia.,School of Medical Science, Edith Cowan University, Joondalup, Western Australia, Australia
| | - Guan K Tay
- School of Psychiatry and Clinical Neurosciences, The University of Western Australia, Crawley, Western Australia, Australia.,Center of Biotechnology, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,Department of Biomedical Engineering, Khalifa University of Science and Technology, Abu Dhabi, United Arab Emirates.,School of Medical Science, Edith Cowan University, Joondalup, Western Australia, Australia
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21
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RETRACTED ARTICLE: Multi-view Sparse Vector Decomposition to Deal with Missing Values in Alcohol Dependence Study. Neural Process Lett 2018. [DOI: 10.1007/s11063-018-9847-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Bradbury C, Köttgen A, Staubach F. Off-target phenotypes in forensic DNA phenotyping and biogeographic ancestry inference: A resource. Forensic Sci Int Genet 2018; 38:93-104. [PMID: 30391626 DOI: 10.1016/j.fsigen.2018.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Revised: 08/27/2018] [Accepted: 10/13/2018] [Indexed: 01/04/2023]
Abstract
With recent advances in DNA sequencing technologies it has become feasible and cost effective to genotype larger marker sets for forensic purposes. Two technologies that make use of the larger marker sets have come into focus in forensic research and applications; inference of biogeographic ancestry (BGA) and forensic DNA phenotyping (FDP). These methods hold the promise to reveal information about a yet unknown perpetrator from a DNA sample. In contrast, DNA-profiling, that is a standard practice in case work, relies on matching DNA-profiles between crime scene material and suspects on a database of DNA-profiles. Markers for DNA-profiling were developed under the premise to reveal as little additional information about the human source of the profile as possible, the rationale being that personal privacy rights have to be balanced against the public interest in solving a crime. The same argument holds for markers used in BGA and FDP; these markers might also reveal information on off-target phenotypes (OTPs), that go beyond BGA and the phenotypes targeted in FDP. In particular, health related OTPs might shift the balance between privacy protection and public interest. However, to our knowledge, there is currently no convenient resource available to incorporate knowledge on OTPs in BGA and FDP assay design and application. In order to provide such a resource, we performed a systematic search for OTPs associated with a comprehensive set of markers (1766 SNPs) used or suggested to be used for BGA inference and FDP. In this set, we identified a relatively small number of 27 SNPs (1.53%) that convey information on diverse health related OTPs such as cancer risk, induced asthma, or risk of alcoholism. Some of these SNPs are commonly used for FDP and BGA across different marker sets. We conclude that the effects of SNP markers used in FDP and BGA on OTPs are currently limited, with few exceptions that should be considered in a balanced decision on assay design and application.
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Affiliation(s)
- Cedric Bradbury
- University College Freiburg, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Anna Köttgen
- Institute of Genetic Epidemiology, Dept. of Biometry, Epidemiology and Medical Bioinformatics, Faculty of Medicine and Medical Center, University of Freiburg, Freiburg, Germany
| | - Fabian Staubach
- Institute of Biology I, Dept. of Evolutionary Biology and Ecology, Albert-Ludwigs-University Freiburg, Freiburg, Germany.
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23
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Polygenic risk, family cohesion, and adolescent aggression in Mexican American and European American families: Developmental pathways to alcohol use. Dev Psychopathol 2018; 30:1715-1728. [PMID: 30168407 DOI: 10.1017/s0954579418000901] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Poor family cohesion and elevated adolescent aggression are associated with greater alcohol use in adolescence and early adulthood. In addition, evocative gene-environment correlations (rGEs) can underlie the interplay between offspring characteristics and negative family functioning, contributing to substance use. Gene-environment interplay has rarely been examined in racial/ethnic minority populations. The current study examined adolescents' polygenic risk scores for aggression in evocative rGEs underlying aggression and family cohesion during adolescence, their contributions to alcohol use in early adulthood (n = 479), and differences between Mexican American and European American subsamples. Results suggest an evocative rGE between polygenic risk scores, aggression, and low family cohesion, with aggression contributing to low family cohesion over time. Greater family cohesion was associated with lower levels of alcohol use in early adulthood and this association was stronger for Mexican American adolescents compared to European American adolescents. Results are discussed with respect to integration of culture and racial/ethnic minority samples into genetic research and implications for alcohol use.
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24
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Muench C, Schwandt M, Jung J, Cortes CR, Momenan R, Lohoff FW. The major depressive disorder GWAS-supported variant rs10514299 in TMEM161B-MEF2C predicts putamen activation during reward processing in alcohol dependence. Transl Psychiatry 2018; 8:131. [PMID: 30006604 PMCID: PMC6045574 DOI: 10.1038/s41398-018-0184-9] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 03/13/2018] [Accepted: 05/11/2018] [Indexed: 01/25/2023] Open
Abstract
Alcohol dependence (AD) frequently co-occurs with major depressive disorder (MDD). While this comorbidity is associated with an increase in disease burden, worse treatment outcomes, and greater economic costs, the underlying neurobiology remains poorly understood. A recent large-scale GWAS of MDD has identified a locus in the TMEM161B-MEF2C region (rs10514299) as a novel risk variant; however, the biological relevance of this variant has not yet been studied. Given previous reports of disrupted reward processing in both AD and MDD, we hypothesized that rs10514299 would be associated with differences in striatal BOLD responses during reward/loss anticipation in AD. DNA samples from 45 recently detoxified patients with AD and 45 healthy controls (HC) were genotyped for rs10514299. Participants performed the Monetary Incentive Delay task in a 3-Tesla MRI scanner. Effects of rs10514299 on striatal activation during anticipation of high/low reward/loss were investigated. Furthermore, we examined associations between rs10514299 and lifetime AD diagnosis in two independent clinical samples [NIAAA: n = 1858 (1123 cases, 735 controls); SAGE: n = 3838 (1848 cases, 1990 controls)], as well as its association with depression severity in a subsample of individuals with a lifetime AD diagnosis (n = 953). Patients carrying the T allele showed significantly greater putamen activation during anticipation of high reward (p = 0.014), low reward (at trend-level; p = 0.081), high loss (p = 0.024), and low loss (p = 0.046) compared to HCs. Association analyses in the NIAAA sample showed a trend-level relationship between rs10514299 and a lifetime AD diagnosis in the European American subgroup (odds ratio = 0.82, p = 0.09). This finding was not replicated in the SAGE sample. In the NIAAA sample, the T allele was significantly associated with greater depression symptom severity in individuals with a lifetime AD diagnosis (β = 1.25, p = 0.02); this association was driven by the African American ancestry subgroup (β = 2.11, p = 0.008). We show for the first time that the previously identified MDD risk variant rs10514299 in TMEM161B-MEF2C predicts neuronal correlates of reward processing in an AD phenotype, possibly explaining part of the shared pathophysiology and comorbidity between the disorders.
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Affiliation(s)
- Christine Muench
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Melanie Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Jeesun Jung
- Division of Intramural Clinical and Biological Research, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Carlos R Cortes
- Clinical NeuroImaging Research Core, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Reza Momenan
- Clinical NeuroImaging Research Core, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA
| | - Falk W Lohoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, USA.
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25
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Mauro KL, Helton SG, Rosoff DB, Luo A, Schwandt M, Jung J, Lee J, Muench C, Lohoff FW. Association Analysis Between Genetic Variation in GATA Binding Protein 4 (GATA4) and Alcohol Use Disorder. Alcohol Alcohol 2018; 53:361-367. [PMID: 29415147 PMCID: PMC6016699 DOI: 10.1093/alcalc/agx120] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 11/30/2017] [Accepted: 12/20/2017] [Indexed: 12/24/2022] Open
Abstract
AIMS Previous genetic association studies have shown that variation in the GATA4 gene encoding the GATA binding protein 4, a binding protein that binds to the ANA sequence GATA, increase susceptibility for alcohol use disorder (AUD). In this study, we aimed to replicate those findings in an independent sample and analyze their association with anxiety. METHODS Overall, 1044 individuals with AUD [534 European American (EA), 510 African Americans (AA)] and 645 controls [413 EA, 232 AA] were genotyped using 34 markers. Genotype and allele frequencies were compared between cases and controls using chi-square analysis. Other phenotype data were analyzed for possible associations with GATA4 single-nucleotide polymorphisms (SNPs) in individuals with AUD. RESULTS Rs6601604 was nominally significantly associated with AUD in EA, and 3 SNPs (rs6990313, rs11250159 and rs17153694) showed trend-level significance (P < 0.10) in AA. However, none of the SNPs were significant after correcting for multiple testing. Haplotype analysis of the 34 SNPs did not find a significant association between haplotype blocks and AUD diagnosis after correcting for multiple testing. From the phenotype analysis, anxiety was associated with GATA4 SNP rs10112596 among the AA group with AUD after a correction for multiple testing. CONCLUSIONS Although previous studies have shown a relationship between variants of the GATA4 gene and a diagnosis of AUD, we did not replicate these findings in our sample. Additional studies of variation in this gene are needed to elucidate whether polymorphisms of the GATA4 gene are associated with AUD and other alcohol-related phenotypes. SHORT SUMMARY GATA4 variants were not associated with AUD in either the European ancestry or African ancestry groups after correcting for multiple comparisons. Rs10112596 demonstrated a significant relationship with an anxiety measure among the African ancestry group with AUD.
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Affiliation(s)
- Kelsey L Mauro
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Sarah G Helton
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Dan B Rosoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Audrey Luo
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Melanie Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Jeesun Jung
- Epidemiology & Biometry Branch, Division of Epidemiology and Prevention Research, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 5635 Fishers Ln., Rockville, MD, USA
| | - Jisoo Lee
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Christine Muench
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
| | - Falk W Lohoff
- Section on Clinical Genomics and Experimental Therapeutics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, 10 Center Drive (10CRC), Bethesda, MD, USA
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Thomas NS, Adkins A, Aliev F, Edwards AC, Webb BT, Tiarsmith EC, Kendler KS, Dick DM, Chartier KG. Alcohol Metabolizing Polygenic Risk for Alcohol Consumption in European American College Students. J Stud Alcohol Drugs 2018; 79:627-634. [PMID: 30079879 PMCID: PMC6090104 DOI: 10.15288/jsad.2018.79.627] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 11/16/2017] [Indexed: 12/30/2023] Open
Abstract
OBJECTIVE Evidence suggests that the nature and magnitude of some genetic effects on alcohol use vary by age. We tested for moderation in the effect of an alcohol metabolizing polygenic score by time across the college years. METHOD Participants (total n = 2,214) were drawn from three cohorts of undergraduate college students, who were assessed annually for up to 4 years starting in their freshman year. Polygenic risk scores (PRSs) were calculated from genes involved in the metabolism of alcohol, as many of these markers are among the best replicated in association studies examining alcohol use phenotypes. Linear mixed effects models were fit by maximum likelihood to test the main effects of time and the PRS on alcohol consumption, as well as moderation of the PRS effect on alcohol consumption by time. RESULTS In the main effects model, the fixed effects for time and the PRS were positively associated with alcohol consumption. The interaction term testing moderation of the PRS effect by time reached statistical significance and remained statistically significant after other relevant interaction effects were controlled for. The main effect of the PRS accounted for 0.2% of the variance in alcohol consumption, whereas the interaction of PRS effect and time accounted for 0.05%. CONCLUSIONS Alcohol metabolizing genetic effects on alcohol use appear to be more influential in later years of college than in earlier years. Shifting environmental contexts, such as increased access to alcohol as individuals approach the legal age to purchase alcohol, may account for this association.
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Affiliation(s)
- Nathaniel S. Thomas
- College Behavioral and Emotional Health Institute, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia
| | - Amy Adkins
- College Behavioral and Emotional Health Institute, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia
| | - Fazil Aliev
- College Behavioral and Emotional Health Institute, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia
- Faculty of Business, Karabuk University, Turkey
| | - Alexis C. Edwards
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
| | - Bradley T. Webb
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
| | - E. Clare Tiarsmith
- School of Social Work, Virginia Commonwealth University, Richmond, Virginia
| | - Kenneth S. Kendler
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia
| | - Danielle M. Dick
- College Behavioral and Emotional Health Institute, Virginia Commonwealth University, Richmond, Virginia
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia
- Department of Human and Molecular Genetics, Virginia Commonwealth University, Richmond, Virginia
| | - Karen G. Chartier
- Department of Psychiatry, Virginia Commonwealth University, Richmond, Virginia
- School of Social Work, Virginia Commonwealth University, Richmond, Virginia
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27
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Vora AK, Fisher AM, New AS, Hazlett EA, McNamara M, Yuan Q, Zhou Z, Hodgkinson C, Goldman D, Siever LJ, Roussos P, Perez-Rodriguez MM. Dimensional Traits of Schizotypy Associated With Glycine Receptor GLRA1 Polymorphism: An Exploratory Candidate-Gene Association Study. J Pers Disord 2018; 32:421-432. [PMID: 28758885 PMCID: PMC5856645 DOI: 10.1521/pedi_2017_31_303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Schizotypy captures the underlying genetic vulnerability to schizophrenia. However, the genetic underpinnings of schizotypy remain unexplored. The authors examined the relationship between single nucleotide poly-morphisms (SNPs) and schizotypy. A sample of 137 subjects (43 healthy controls, 34 subjects with schizotypal personality disorder [SPD], 32 with borderline personality disorder, and 25 with other personality disorders) completed the Schizotypal Personality Questionnaire (SPQ). Subjects were genotyped using a custom array chip. Principal component analysis was used to cluster SPQ variables. Linear regression tested for associations between dimensional schizotypy and SNPs. Logistic regression tested for associations between SNPs and SPD diagnosis. There were significant associations between the minor alleles of three SNPs within the glycine receptor alpha 1 subunit (GLRA1) and the disorganized schizotypy dimension, even after Bonferroni correction. There were no significant associations between any SNPs and the categorical SPD diagnosis. Glycine receptor pathways may have an impact on dimensional traits of psychosis.
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Affiliation(s)
- Anvi K. Vora
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - Amanda M. Fisher
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - Antonia S. New
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - Erin A. Hazlett
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - Margaret McNamara
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - Qiaoping Yuan
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
| | - Zhifeng Zhou
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
| | - Colin Hodgkinson
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
| | - David Goldman
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, USA
| | - Larry J. Siever
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
| | - Panos Roussos
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA,Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA,Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA,Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - M. Mercedes Perez-Rodriguez
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA,James J. Peters Veterans Affairs Medical Center, Bronx, NY, USA
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28
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The OPRM1 A118G polymorphism: converging evidence against associations with alcohol sensitivity and consumption. Neuropsychopharmacology 2018; 43:1530-1538. [PMID: 29497164 PMCID: PMC5983535 DOI: 10.1038/s41386-017-0002-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Revised: 10/28/2017] [Accepted: 12/07/2017] [Indexed: 12/31/2022]
Abstract
The endogenous opioid system may be involved in the development and maintenance of alcohol use disorder (AUD) and is a target for existing AUD pharmacotherapies. A functional polymorphism of the mu-opioid receptor gene (OPRM1 A118G, rs1799971) may alter the risk of developing AUD. Human laboratory studies have demonstrated that minor allele carriers self-administer more alcohol, show greater sensitivity to alcohol's effects, and exhibit increased alcohol-induced dopamine release. On the other hand, large genome-wide association studies and meta-analyses of candidate gene studies have not found an association between this genotype and alcohol dependence diagnosis. Given this discrepancy, the present study sought to verify whether OPRM1 A118G was associated with alcohol self-administration, subjective response to alcohol, and craving in a sample of 106 social drinkers of European ancestry who completed an intravenous alcohol self-administration session. We found no relationship between OPRM1 rs1799971 genotype and subjective response to alcohol or craving. OPRM1 genotype was not associated with total alcohol exposure or likelihood of attaining a binge-level exposure (80 mg%) during the intravenous alcohol self-administration session. Analysis of 90-day Timeline Followback interview data in a larger sample of 965 participants of European ancestry found no relationship between OPRM1 genotype and alcohol consumption in either alcohol dependent or non-dependent participants. These findings suggest that there may not be an association between OPRM1 rs1799971 genotype and alcohol consumption or sensitivity in individuals of European ancestry.
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29
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Bonham LW, Evans DS, Liu Y, Cummings SR, Yaffe K, Yokoyama JS. Neurotransmitter Pathway Genes in Cognitive Decline During Aging: Evidence for GNG4 and KCNQ2 Genes. Am J Alzheimers Dis Other Demen 2018; 33:153-165. [PMID: 29338302 PMCID: PMC6209098 DOI: 10.1177/1533317517739384] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND/RATIONALE Experimental studies support the role of neurotransmitter genes in dementia risk, but human studies utilizing single variants in candidate genes have had limited success. METHODS We used the gene-based testing program Versatile Gene-based Association Study to assess whether aggregate variation across 6 neurotransmitter pathways influences risk of cognitive decline in 8159 cognitively normal elderly (≥65 years old) adults from 3 community-based cohorts. RESULTS Common genetic variation in GNG4 and KCNQ2 was associated with cognitive decline. In human brain tissue data sets, both GNG4 and KCNQ2 show higher expression in hippocampus relative to other brain regions; GNG4 expression decreases with advancing age. Both GNG4 and KCNQ2 show highest expression in fetal astrocytes. CONCLUSION Genetic variation analyses and gene expression data suggest that GNG4 and KCNQ2 may be associated with cognitive decline in normal aging. Gene-based testing of neurotransmitter pathways may confirm and reveal novel risk genes in future studies of healthy cognitive aging.
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Affiliation(s)
- Luke W. Bonham
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, CA, USA
| | - Daniel S. Evans
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Yongmei Liu
- Department of Epidemiology and Prevention, Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Steven R. Cummings
- California Pacific Medical Center Research Institute, San Francisco, CA, USA
| | - Kristine Yaffe
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, CA, USA
- Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, USA
- Department of Veterans Affairs, San Francisco Veterans Affairs Medical Center, San Francisco, CA, USA
- Department of Psychiatry, University of California, San Francisco, CA, USA
| | - Jennifer S. Yokoyama
- Department of Neurology, Memory and Aging Center, University of California, San Francisco, CA, USA
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30
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Landefeld CC, Hodgkinson CA, Spagnolo PA, Marietta CA, Shen PH, Sun H, Zhou Z, Lipska BK, Goldman D. Effects on gene expression and behavior of untagged short tandem repeats: the case of arginine vasopressin receptor 1a (AVPR1a) and externalizing behaviors. Transl Psychiatry 2018; 8:72. [PMID: 29581423 PMCID: PMC5913313 DOI: 10.1038/s41398-018-0120-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 11/13/2017] [Indexed: 12/31/2022] Open
Abstract
Genome-wide association studies (GWAS) of complex, heritable, behavioral phenotypes have yielded an incomplete accounting of the genetic influences. The identified loci explain only a portion of the observed heritability, and few of the loci have been shown to be functional. It is clear that current GWAS techniques overlook key components of phenotypically relevant genetic variation, either because of sample size, as is frequently asserted, or because of methodology. Here we use arginine vasopressin receptor 1a (AVPR1a) as an in-depth model of a methodologic limitation of GWAS: the functional genetic variation (in the form of short tandem repeats) of this key gene involved in affiliative behavior cannot be captured by current GWAS methodologies. Importantly, we find evidence of differential allele expression, twofold or more, in at least a third of human brain samples heterozygous for a reporter SNP in the AVPR1a transcript. We also show that this functional effect and a downstream phenotype, externalizing behavior, are predicted by AVPR1a STRs but not SNPs.
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Affiliation(s)
- Clare C Landefeld
- 0000 0004 0435 0569grid.254293.bCleveland Clinic Lerner College of Medicine at Case Western Reserve University, Cleveland, OH 44195 USA ,0000 0001 2297 5165grid.94365.3dLaboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852 USA
| | - Colin A Hodgkinson
- 0000 0001 2297 5165grid.94365.3dLaboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852 USA
| | - Primavera A Spagnolo
- 0000 0001 2297 5165grid.94365.3dOffice of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20852 USA
| | - Cheryl A Marietta
- 0000 0001 2297 5165grid.94365.3dLaboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852 USA
| | - Pei-Hong Shen
- 0000 0001 2297 5165grid.94365.3dLaboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852 USA
| | - Hui Sun
- 0000 0001 2297 5165grid.94365.3dLaboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852 USA
| | - Zhifeng Zhou
- 0000 0001 2297 5165grid.94365.3dLaboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD 20852 USA
| | - Barbara K Lipska
- 0000 0001 2297 5165grid.94365.3dHuman Brain Collection Core, National Institutes of Mental Health, National Institutes of Health, Bethesda, MD 20814 USA
| | - David Goldman
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, MD, 20852, USA. .,Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD, 20852, USA.
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31
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Trucco EM, Cope LM, Burmeister M, Zucker RA, Heitzeg MM. Pathways to Youth Behavior: The Role of Genetic, Neural, and Behavioral Markers. JOURNAL OF RESEARCH ON ADOLESCENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR RESEARCH ON ADOLESCENCE 2018; 28:26-39. [PMID: 29460350 PMCID: PMC5823277 DOI: 10.1111/jora.12341] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Neural and temperamental mechanisms through which a genetic risk marker in the γ-amino butyric acid α2 receptor subunit (GABRA2) impacts adolescent functioning were investigated. Participants (N = 80; 29 female) completed an emotional word task during functional magnetic resonance imaging. Behavioral control, negative emotionality, and resiliency temperament constructs were assessed. Externalizing and internalizing problems were the outcomes. Those with the GABRA2 minor allele had reduced activation to positive words in the angular gyrus, middle temporal gyrus, and cerebellum, and to negative words in frontal, parietal, and occipital cortices. Reduced activation in the angular gyrus predicted greater negative emotionality and, in turn, elevated externalizing problems. Reduced activation in the inferior parietal cortex predicted greater resiliency and, in turn, low externalizing problems.
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Affiliation(s)
- Elisa M. Trucco
- Department of Psychology, Florida International University, USA
- Center for Children and Families, Florida International University, USA
- Department of Psychiatry, University of Michigan, USA
- Addiction Center, University of Michigan, USA
| | - Lora M. Cope
- Department of Psychiatry, University of Michigan, USA
- Addiction Center, University of Michigan, USA
| | - Margit Burmeister
- Department of Psychiatry, University of Michigan, USA
- Molecular & Behavioral Neuroscience Institute, University of Michigan, USA
- Department of Human Genetics, University of Michigan, USA
- Department of Computational Medicine & Bioinformatics, University of Michigan, USA
| | - Robert A. Zucker
- Department of Psychiatry, University of Michigan, USA
- Addiction Center, University of Michigan, USA
- Department of Psychology, University of Michigan, USA
| | - Mary M. Heitzeg
- Department of Psychiatry, University of Michigan, USA
- Addiction Center, University of Michigan, USA
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32
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Levran O, Peles E, Randesi M, Correa da Rosa J, Shen PH, Rotrosen J, Adelson M, Kreek MJ. Genetic variations in genes of the stress response pathway are associated with prolonged abstinence from heroin. Pharmacogenomics 2018; 19:333-341. [PMID: 29465008 DOI: 10.2217/pgs-2017-0179] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
AIM This study assesses whether genetic variants in stress-related genes are associated with prolonged abstinence from heroin in subjects that are not in long-term methadone treatment. METHODS Frequencies of 117 polymorphisms in 30 genes were compared between subjects with history of heroin addiction, either without agonist treatment (n = 129) or in methadone maintenance treatment (n = 923). RESULTS SNP rs1500 downstream of CRHBP and an interaction of SNPs rs10482672 (NR3C1) and rs4234955 (NPY1R/NPY5R) were significantly associated with prolonged abstinence without agonist treatment. CONCLUSION This study suggests that variability in stress-related genes may contribute to the ability of certain subjects to remain in prolonged abstinence from heroin, possibly due to higher resilience to stress.
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Affiliation(s)
- Orna Levran
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, Box 171, New York, NY 10065, USA
| | - Einat Peles
- Dr Miriam & Sheldon G Adelson Clinic for Drug Abuse Treatment & Research, Tel Aviv Elias Sourasky Medical Center, 1 Henrietta Szold St, Tel-Aviv, 64924, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, 69978, Israel
| | - Matthew Randesi
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, Box 171, New York, NY 10065, USA
| | - Joel Correa da Rosa
- Center for Clinical & Translational Science, The Rockefeller University, New York, NY 10065, USA.,Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Pei-Hong Shen
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse & Alcoholism, NIH, Rockville, MD 20852, USA
| | | | - Miriam Adelson
- Dr Miriam & Sheldon G Adelson Clinic for Drug Abuse Treatment & Research, Tel Aviv Elias Sourasky Medical Center, 1 Henrietta Szold St, Tel-Aviv, 64924, Israel.,Dr Miriam & Sheldon G Adelson Clinic for Drug Abuse Treatment & Research, Las Vegas, NV 89169, USA
| | - Mary Jeanne Kreek
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Avenue, Box 171, New York, NY 10065, USA
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Association study of BDNF and DRD3 genes with alcohol use disorder in Schizophrenia. Neurosci Lett 2018; 671:1-6. [PMID: 29357295 DOI: 10.1016/j.neulet.2018.01.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 01/04/2018] [Accepted: 01/17/2018] [Indexed: 11/24/2022]
Abstract
Alcohol use disorder (AUD) is a leading risk factor of disease burden in the world. It is also commonly comorbid with over 20% of schizophrenia patients. The brain-derived neurotrophic factor (BDNF) and dopamine D3 receptor (DRD3) have been implicated in alcohol drinking behaviour. Previous genetic studies of the BDNF and DRD3 genes produced mixed findings; however, only one study investigated two BDNF genetic markers with alcohol dependence in schizophrenia patients. We investigated 15 single-nucleotide polymorphisms (SNPs) in DRD3 and four SNPs in BDNF for possible association with alcohol abuse or dependence in schizophrenia patients of European ancestry (N = 195). The patients were assessed for the occurrence of alcohol abuse or alcohol dependence using the Structured Clinical Interview for DSM-IV Axis I Disorders, Patient Edition (SCID-I/P). We found the BDNF Val66Met to be associated with alcohol dependence (p = 0.004). We also found haplotypes across BDNF to be nominally associated with alcohol dependence. Analyses of DRD3 markers and haplotypes yielded mostly negative findings. Our findings support a role of the BDNF gene in alcohol dependence in schizophrenia patients. Larger samples are required to confirm our findings, particularly those of BDNF haplotypes.
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Sloan ME, Gowin JL, Yan J, Schwandt ML, Spagnolo PA, Sun H, Hodgkinson CA, Goldman D, Ramchandani VA. Severity of alcohol dependence is associated with the fatty acid amide hydrolase Pro129Thr missense variant. Addict Biol 2018; 23:474-484. [PMID: 28150397 DOI: 10.1111/adb.12491] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 11/08/2016] [Accepted: 12/18/2016] [Indexed: 01/09/2023]
Abstract
The endocannabinoid system plays an important role in reward and addiction. One of the two main endocannabinoid neurotransmitters, anandamide, is metabolized by fatty acid amide hydrolase, an enzyme with a functional genetic polymorphism (FAAH Pro129Thr, rs324420). The Thr129 allele has been linked to problem drug and alcohol use, but the association has not been widely replicated and may be stronger for clinical measures of severity rather than categorical diagnosis. In the present study, we sought to determine whether the Thr129 allele was associated with both alcohol dependence (AD) diagnosis and severity in a sample of 1434 European American and African American individuals, 952 of whom were diagnosed with lifetime AD. Participants were genotyped for FAAH rs324420, and ancestry was determined via a genome-wide panel of ancestry informative markers. Subjects participated in Structured Clinical Interviews for psychiatric disorders and 90-day Timeline Followback interviews to assess recent alcohol use. European American participants with current AD had a higher Thr129 allele frequency than non-dependent controls. In European Americans with lifetime AD, there were significantly different distributions of drinking days and binge drinking days between the two genotype groups, with Thr129 carriers reporting a median of 10 fewer abstinent days and 13 more binge drinking days than Pro129/Pro129 homozygotes. In African American participants, there were no significant differences between Thr129 allele frequency in cases and controls and no significant differences in measures of AD severity by genotype. These findings provide evidence that the Pro129Thr missense variant is associated with AD severity in European Americans.
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Affiliation(s)
- Matthew E. Sloan
- Section on Human Psychopharmacology; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
| | - Joshua L. Gowin
- Section on Human Psychopharmacology; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
| | - Jia Yan
- Section on Human Psychopharmacology; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
| | - Melanie L. Schwandt
- Office of the Clinical Director; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
| | - Primavera A. Spagnolo
- Office of the Clinical Director; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
| | - Hui Sun
- Office of the Clinical Director; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
| | - Colin A. Hodgkinson
- Laboratory of Neurogenetics; National Institute on Alcohol Abuse and Alcoholism; Rockville MD USA
| | - David Goldman
- Office of the Clinical Director; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
- Laboratory of Neurogenetics; National Institute on Alcohol Abuse and Alcoholism; Rockville MD USA
| | - Vijay A. Ramchandani
- Section on Human Psychopharmacology; National Institute on Alcohol Abuse and Alcoholism; Bethesda MD USA
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35
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Love TM, Cranford JA, Burmeister M, Wojnar M, Zucker RA, J. Brower K. Oxytocin Genotype Moderates the Impact of Social Support on Psychiatric Distress in Alcohol-Dependent Patients. Alcohol Alcohol 2018; 53:57-63. [PMID: 29040351 PMCID: PMC5860582 DOI: 10.1093/alcalc/agx077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Revised: 08/29/2017] [Accepted: 09/18/2017] [Indexed: 11/14/2022] Open
Abstract
AIMS The social environment strongly influences individual mental health. Individuals with strong social support systems tend to experience higher levels of well-being, lower levels of psychological distress and exhibit fewer psychiatric symptoms. However, there is a significant degree of individual variability as to the extent to which social support is beneficial to overall mental health. From a neurobiological perspective, it is suggested that the social hormone, oxytocin, may moderate the favorable effects of social interaction. To explore this possibility, we evaluated oxytocin genotype, social support and psychological health in a group of individuals diagnosed with DSM-IV alcohol dependence. METHODS The associations between OXT genotype, social support and psychological health were analyzed in data from 269 adults diagnosed with DSM-IV alcohol dependence (25% female) admitted into residential treatment programs and outpatient centers in Warsaw, Poland. RESULTS In line with past observations, we noted that psychiatric distress scores were negatively correlated with social support. Extending these observations, we uncovered a significant moderating effect of OXT genotype (rs2740210) on the relationship between social support and psychiatric distress. While G carriers displayed the predicted negative relationship between social support and psychiatric distress, T homozygotes failed to exhibit such a relationship. CONCLUSION Genetically driven variation in oxytocin system functioning may influence the degree to which the beneficial effects of social support are felt in this population. These results have direct clinical relevance as enhancing social engagement to improve mental health may prove to be a less effective strategy in some patients owing to intrinsic factors. SHORT SUMMARY The associations between oxytocin genotype, social support, and psychological health were analyzed in data from 269 adults diagnosed with DSM-IV alcohol dependence. A significant moderating effect of OXT genotype (rs2740210) on the relationship between social support and psychiatric distress was detected.
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Affiliation(s)
- Tiffany M Love
- University of Michigan Addiction Research Center, Ann Arbor, MI, USA
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA
| | - James A Cranford
- University of Michigan Addiction Research Center, Ann Arbor, MI, USA
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - Margit Burmeister
- University of Michigan Addiction Research Center, Ann Arbor, MI, USA
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
- Department of Genetics, Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, MI, USA
| | - Marcin Wojnar
- University of Michigan Addiction Research Center, Ann Arbor, MI, USA
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
- Department of Psychiatry, Medical University of Warsaw, Warsaw, Poland
| | - Robert A Zucker
- University of Michigan Addiction Research Center, Ann Arbor, MI, USA
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
| | - Kirk J. Brower
- University of Michigan Addiction Research Center, Ann Arbor, MI, USA
- Department of Psychiatry, University of Michigan, Ann Arbor, MI, USA
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Randesi M, van den Brink W, Levran O, Yuferov V, Blanken P, van Ree JM, Ott J, Kreek MJ. Dopamine gene variants in opioid addiction: comparison of dependent patients, nondependent users and healthy controls. Pharmacogenomics 2017; 19:95-104. [PMID: 29210332 DOI: 10.2217/pgs-2017-0134] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
AIM To determine whether specific dopaminergic system gene variants are associated with opioid dependence. PATIENTS & METHODS Subjects included 153 healthy controls, 163 opioid exposed, but not dependent and 281 opioid dependent. Genotypes of 90 variants in 13 genes were examined. RESULTS The most significant results were obtained for DA β-hydroxylase variants, rs2073837 and rs1611131, which were associated with protection from addiction (q = 0.0172, 0.0415, respectively) and the functional TH variant, rs2070762, was associated with more risk (q = 0.0387). The three variants also showed a combined effect that remained significant after correction for multiple testing (pfinal = 0.0039). CONCLUSION These data offer support that dopaminergic gene variants have a role in opioid dependence and warrant further study.
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Affiliation(s)
- Matthew Randesi
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
| | - Wim van den Brink
- Central Committee on the Treatment of Heroin Addicts (CCBH), Universiteitsweg 100, 3584 CG Utrecht, The Netherlands.,Amsterdam Institute for Addiction Research, Department of Psychiatry, Academic Medical Center, University of Amsterdam, PO Box 22660, 1100 DD Amsterdam, The Netherlands
| | - Orna Levran
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
| | - Vadim Yuferov
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
| | - Peter Blanken
- Central Committee on the Treatment of Heroin Addicts (CCBH), Universiteitsweg 100, 3584 CG Utrecht, The Netherlands.,Parnassia Addiction Research Centre (PARC, Brijder Addiction Treatment) PO Box 53002, 2505 AA The Hague, The Netherlands
| | - Jan M van Ree
- Central Committee on the Treatment of Heroin Addicts (CCBH), Universiteitsweg 100, 3584 CG Utrecht, The Netherlands.,Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht University, Heidelberglaan 100, 3584 CX Utrecht, The Netherlands
| | - Jurg Ott
- Laboratory of Statistical Genetics, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
| | - Mary Jeanne Kreek
- Laboratory of the Biology of Addictive Diseases, The Rockefeller University, 1230 York Ave, New York, NY 10065, USA
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37
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Wang FL, Chassin L. Negative Urgency Mediates the Relation between Genetically-Influenced Serotonin Functioning and Alcohol Problems. Clin Psychol Sci 2017; 6:106-122. [PMID: 29354329 DOI: 10.1177/2167702617733817] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Serotonin (5-HT) functioning is associated with alcohol problems. However, the mechanisms underlying this association remain unclear. The current study tested whether five separate dimensions of impulsivity (UPPS-P) mediated the relation between a polygenic score indexing 5-HT functioning and alcohol problems and whether any of these paths were moderated by age. Results showed that a 5-HT polygenic score predicted alcohol problems indirectly through negative urgency, but not any other facet of impulsivity. The 5-HT polygenic score also directly predicted alcohol problems. No age moderation was found. Findings suggest that negative urgency might be one important mechanism underlying the relation between genetically-influenced 5-HT functioning and alcohol problems. However, genetically-influenced 5-HT functioning likely influences alcohol problems through additional mechanisms. More broadly, results suggest that the previously observed transdiagnostic nature of 5-HT functioning on diverse types of psychopathology might be, in part, explained by its effect on negative urgency.
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Affiliation(s)
- Frances L Wang
- Department of Psychology, Arizona State University.,Department of Psychiatry, University of Pittsburgh Medical Center
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38
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Levran O, Peles E, Randesi M, da Rosa JC, Adelson M, Kreek MJ. The μ-opioid receptor nonsynonymous variant 118A>G is associated with prolonged abstinence from heroin without agonist treatment. Pharmacogenomics 2017; 18:1387-1391. [PMID: 28976288 DOI: 10.2217/pgs-2017-0092] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
AIM This study assesses whether opioid-related gene variants contribute to reduced vulnerability to relapse to heroin in persons who are not treated with μ-opioid receptor agonist. METHODS Genotypes of 71 SNPs, in nine genes, were analyzed for association with long-term abstinence in former heroin-dependents of European/Middle Eastern ancestry, either without agonist treatment (n = 129) or in methadone maintenance treatment (n = 922). RESULTS The functional OPRM1 nonsynonymous SNP rs1799971 (118A>G) showed significant association with long-term abstinence (Ppermutation = 0.03, dominant model, OR: 2.2; 95% CI: 1.5-3.3). CONCLUSION Since the stress axis is regulated in part by β-endorphin, this functional OPRM1 SNP may blunt the endogenous stress response and contribute to reduced vulnerability for relapse.
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Affiliation(s)
- Orna Levran
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, NY, 10065, USA
| | - Einat Peles
- Dr Miriam & Sheldon G Adelson Clinic for Drug Abuse Treatment & Research, Tel Aviv Elias Sourasky Medical Center, 1 Henrietta Szold St, Tel-Aviv, 64924, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, 69978, Israel
| | - Matthew Randesi
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, NY, 10065, USA
| | - Joel Correa da Rosa
- Center for Clinical & Translational Science, The Rockefeller University, NY, 10065, USA
| | - Miriam Adelson
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, NY, 10065, USA.,Dr Miriam & Sheldon G Adelson Clinic for Drug Abuse Treatment & Research, Tel Aviv Elias Sourasky Medical Center, 1 Henrietta Szold St, Tel-Aviv, 64924, Israel.,Dr Miriam & Sheldon G Adelson Clinic for Drug Abuse Treatment & Research, Las Vegas, NV, 89169, USA
| | - Mary Jeanne Kreek
- The Laboratory of the Biology of Addictive Diseases, The Rockefeller University, NY, 10065, USA
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Galán CA, Choe DE, Forbes EE, Shaw DS. The interaction between monoamine oxidase A and punitive discipline in the development of antisocial behavior: Mediation by maladaptive social information processing. Dev Psychopathol 2017; 29:1235-1252. [PMID: 28031080 DOI: 10.1017/s0954579416001279] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Previous studies demonstrate that boys' monoamine oxidase A (MAOA) genotype interacts with adverse rearing environments in early childhood, including punitive discipline, to predict later antisocial behavior. Yet the mechanisms by which MAOA and punitive parenting interact during childhood to amplify risk for antisocial behavior are not well understood. In the present study, hostile attributional bias and aggressive response generation during middle childhood, salient aspects of maladaptive social information processing, were tested as possible mediators of this relation in a sample of 187 low-income men followed prospectively from infancy into early adulthood. Given racial-ethnic variation in MAOA allele frequencies, analyses were conducted separately by race. In both African American and Caucasian men, those with the low-activity MAOA allele who experienced more punitive discipline at age 1.5 generated more aggressive responses to perceived threat at age 10 relative to men with the high-activity variant. In the African American subsample only, formal mediation analyses indicated a marginally significant indirect effect of maternal punitiveness on adult arrest records via aggressive response generation in middle childhood. The findings suggest that maladaptive social information processing may be an important mechanism underlying the association between MAOA × Parenting interactions and antisocial behavior in early adulthood. The present study extends previous work in the field by demonstrating that MAOA and harsh parenting assessed in early childhood interact to not only predict antisocial behavior in early adulthood, but also predict social information processing, a well-established social-cognitive correlate of antisocial behavior.
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40
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Elam KK, Chassin L, Lemery-Chalfant K, Pandika D, Wang FL, Bountress K, Dick D, Agrawal A. Affiliation with substance-using peers: Examining gene-environment correlations among parent monitoring, polygenic risk, and children's impulsivity. Dev Psychobiol 2017; 59:561-573. [PMID: 28561888 PMCID: PMC6035731 DOI: 10.1002/dev.21529] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 05/05/2017] [Indexed: 02/05/2023]
Abstract
Parental monitoring can buffer the effect of deviant peers on adolescents' substance use by reducing affiliation with substance-using peers. However, children's genetic predispositions may evoke poorer monitoring, contributing to negative child outcomes. We examined evocative genotype-environment correlations underlying children's genetic predisposition for behavioral undercontrol and parental monitoring in early adolescence via children's impulsivity in middle childhood, and the influence of parental monitoring on affiliation with substance-using peers a year and a half later (n = 359). Genetic predisposition for behavioral undercontrol was captured using a polygenic risk score, and a portion of passive rGE was controlled by including parents' polygenic risk scores. Children's polygenic risk predicted poorer parental monitoring via greater children's impulsivity, indicating evocative rGE, controlling for a portion of passive rGE. Poorer parental monitoring predicted greater children's affiliation with substance-using peers a year and a half later. Results are discussed with respect to gene-environment correlations within developmental cascades.
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Affiliation(s)
- Kit K. Elam
- T. Denny Sanford School of Social and Family Dynamics, Arizona State University, Tempe, Arizona
| | - Laurie Chassin
- Department of Psychology, Arizona State University, Tempe, Arizona
| | | | - Danielle Pandika
- Department of Psychology, Arizona State University, Tempe, Arizona
| | - Frances L. Wang
- Department of Psychiatry, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Kaitlin Bountress
- National Crime Victims Research & Treatment Center, Medical University of South Carolina, Charleston, South Carolina
| | - Danielle Dick
- Department of Psychology, Virginia Commonwealth University, Richmond, Virginia
| | - Arpana Agrawal
- Department of Psychological & Brain Sciences, Washington University in St. Louis, Saint Louis, Missouri
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Wang FL, Chassin L, Lee M, Haller M, King K. Roles of Response Inhibition and Gene-Environment Interplay in Pathways to Adolescents' Externalizing Problems. JOURNAL OF RESEARCH ON ADOLESCENCE : THE OFFICIAL JOURNAL OF THE SOCIETY FOR RESEARCH ON ADOLESCENCE 2017; 27:258-277. [PMID: 28876522 PMCID: PMC5588699 DOI: 10.1111/jora.12270] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
This study used two waves of data to investigate pathways through which adolescents' response inhibition related to later externalizing problems. A polygenic risk score indexed genetic risk for poor response inhibition. Adolescents' performance on a response inhibition task mediated the relation between adolescents' polygenic risk scores and mother's inconsistent parenting (i.e., evocative rGE), even after controlling for mothers' genetic risk (i.e., passive rGE). Mothers' inconsistent parenting subsequently prospectively predicted adolescents' externalizing problems. Adolescents' response inhibition also prospectively predicted later externalizing behaviors. These findings were subgroup-specific, with greater risk for non-Hispanic Caucasian boys with substance-disordered parents. Results suggest that poor response inhibition may increase risk for adolescents' externalizing problems both directly and by evoking certain environmental conditions.
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Perez-Rodriguez MM, New AS, Goldstein KE, Rosell D, Yuan Q, Zhou Z, Hodgkinson C, Goldman D, Siever LJ, Hazlett EA. Brain-derived neurotrophic factor Val66Met genotype modulates amygdala habituation. Psychiatry Res 2017; 263:85-92. [PMID: 28371657 PMCID: PMC5856456 DOI: 10.1016/j.pscychresns.2017.03.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 02/04/2017] [Accepted: 03/20/2017] [Indexed: 12/14/2022]
Abstract
A deficit in amygdala habituation to repeated emotional stimuli may be an endophenotype of disorders characterized by emotion dysregulation, such as borderline personality disorder (BPD). Amygdala reactivity to emotional stimuli is genetically modulated by brain-derived neurotrophic factor (BDNF) variants. Whether amygdala habituation itself is also modulated by BDNF genotypes remains unknown. We used imaging-genetics to examine the effect of BDNF Val66Met genotypes on amygdala habituation to repeated emotional stimuli. We used functional magnetic resonance imaging (fMRI) in 57 subjects (19 BPD patients, 18 patients with schizotypal personality disorder [SPD] and 20 healthy controls [HC]) during a task involving viewing of unpleasant, neutral, and pleasant pictures, each presented twice to measure habituation. Amygdala responses across genotypes (Val66Met SNP Met allele-carriers vs. Non-Met carriers) and diagnoses (HC, BPD, SPD) were examined with ANOVA. The BDNF 66Met allele was significantly associated with a deficit in amygdala habituation, particularly for emotional pictures. The association of the 66Met allele with a deficit in habituation to unpleasant emotional pictures remained significant in the subsample of BPD patients. Using imaging-genetics, we found preliminary evidence that deficient amygdala habituation may be modulated by BDNF genotype.
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Affiliation(s)
- M Mercedes Perez-Rodriguez
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; The Mental Illness Research Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA; CIBERSAM, Autonoma University, Fundacion Jimenez Diaz and Ramon y Cajal Hospital, Madrid, Spain.
| | - Antonia S New
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; The Mental Illness Research Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
| | - Kim E Goldstein
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Daniel Rosell
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; The Mental Illness Research Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
| | - Qiaoping Yuan
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-9412, USA
| | - Zhifeng Zhou
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-9412, USA
| | - Colin Hodgkinson
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-9412, USA
| | - David Goldman
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, MD 20892-9412, USA
| | - Larry J Siever
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; The Mental Illness Research Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
| | - Erin A Hazlett
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; The Mental Illness Research Education and Clinical Center, James J. Peters Veterans Affairs Medical Center, Bronx, NY 10468, USA
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Serotonin functioning and adolescents' alcohol use: A genetically informed study examining mechanisms of risk. Dev Psychopathol 2017; 30:213-233. [PMID: 28534453 DOI: 10.1017/s095457941700058x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The current study used data from two longitudinal samples to test whether self-regulation, depressive symptoms, and aggression/antisociality were mediators in the relation between a polygenic score indexing serotonin (5-HT) functioning and alcohol use in adolescence. The results from an independent genome-wide association study of 5-hydroxyindoleacetic acid in the cerebrospinal fluid were used to create 5-HT polygenic risk scores. Adolescents and/or parents reported on adolescents' self-regulation (Time 1), depressive symptoms (Time 2), aggression/antisociality (Time 2), and alcohol use (Time 3). The results showed that 5-HT polygenic risk did not predict self-regulation. However, adolescents with higher levels of 5-HT polygenic risk showed greater depression and aggression/antisociality. Adolescents' aggression/antisociality mediated the relation between 5-HT polygenic risk and later alcohol use. Deficits in self-regulation also predicted depression and aggression/antisociality, and indirectly predicted alcohol use through aggression/antisociality. Pathways to alcohol use were especially salient for males from families with low parental education in one of the two samples. The results provide insights into the longitudinal mechanisms underlying the relation between 5-HT functioning and alcohol use (i.e., earlier aggression/antisociality). There was no evidence that genetically based variation in 5-HT functioning predisposed individuals to deficits in self-regulation. Genetically based variation in 5-HT functioning and self-regulation might be separate, transdiagnostic risk factors for several types of psychopathology.
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A Dopamine Receptor genetic variant enhances perceptual speed in cognitive healthy subjects. ALZHEIMERS & DEMENTIA-TRANSLATIONAL RESEARCH & CLINICAL INTERVENTIONS 2017; 3:254-261. [PMID: 28993814 PMCID: PMC5630172 DOI: 10.1016/j.trci.2017.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Introduction Cognition is under strong genetic control, yet the specific genes are unknown. Methods One hundred and fifty-three cognitive healthy European subjects from the Reference Abilities Study (RANN) were genotyped for 1,160 variants within 446 neuropsychiatric genes. Adjusted linear regression models evaluated the association between the genetic variants and four reference abilities (Vocabulary, Episodic Memory, Perceptual Speed, and Reasoning). Results One hundred and fifty-nine variants nominally were found significant in the RANN cohort and re-evaluated in an independent cohort of 868 cognitive healthy subjects from the Religious Orders Study and Rush Memory Aging Project. Meta-analysis yielded a Bonferroni adjusted statistically significant association between perceptual speed and a variant located in the promoter of the dopamine receptor D4 gene, rs3756450 (β = 0.23, standard error = 0.05, Pmeta = 2.3 × 10−5). Discussion Our data suggest that genetic variation in a dopamine pathway gene influences perceptual speed performance in cognitively healthy individuals.
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Lanning R, Lett TA, Tiwari AK, Brandl EJ, de Luca V, Voineskos AN, Potkin SG, Lieberman JA, Meltzer HY, Müller DJ, Remington G, Kennedy JL, Zai CC. Association study between the neurexin-1 gene and tardive dyskinesia. Hum Psychopharmacol 2017; 32. [PMID: 28120489 DOI: 10.1002/hup.2568] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 10/16/2016] [Accepted: 11/28/2016] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Tardive dyskinesia (TD) is a motor side effect that may develop after long-term antipsychotic treatment. Schizophrenia has recently been associated with the Neurexin-1 (NRXN1) gene that codes for a cell adhesion molecule in synaptic communication. METHODS This study examined five NRXN1 single-nucleotide polymorphisms (SNPs) for possible association with the occurrence and severity of TD in 178 schizophrenia patients of European ancestry. RESULTS We did not find these SNPs to be significantly associated with TD. CONCLUSIONS More research is needed with additional SNPs and in bigger samples before we can completely rule out the role of NRXN1 in TD.
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Affiliation(s)
- Rachel Lanning
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada
| | - Tristram A Lett
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, Charité University Medicine Berlin, Berlin, Germany
| | - Arun K Tiwari
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - Eva J Brandl
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, Charité University Medicine Berlin, Berlin, Germany
| | - Vincenzo de Luca
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Aristotle N Voineskos
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Steven G Potkin
- Department of Psychiatry and Human Behavior, University of California, Irvine, California, USA
| | - Jeffrey A Lieberman
- Department of Psychiatry, Mental Health and Neuroscience Center, the University of North Carolina at Chapel Hill School of Medicine, North Carolina, USA
| | - Herbert Y Meltzer
- Psychiatry and Behavioral Sciences, Pharmacology and Physiology, Chemistry of Life Processes Institute, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Daniel J Müller
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Gary Remington
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada
| | - James L Kennedy
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Clement C Zai
- Neurogenetics Section, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.,Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.,Laboratory Medicine and Pathobiology, University of Toronto, Toronto, Ontario, Canada
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Cope LM, Hardee JE, Soules ME, Burmeister M, Zucker RA, Heitzeg MM. Reduced brain activation during inhibitory control in children with COMT Val/Val genotype. Brain Behav 2016; 6:e00577. [PMID: 28032000 PMCID: PMC5167006 DOI: 10.1002/brb3.577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2015] [Revised: 08/08/2016] [Accepted: 08/14/2016] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Behavioral undercontrol is a well-established risk factor for substance use disorder, identifiable at an early age well before the onset of substance use. However, the biological mechanistic structure underlying the behavioral undercontrol/substance use relationship is not well understood. The enzyme catechol O-methyltransferase (COMT) catabolizes dopamine and norepinephrine in the prefrontal cortex and striatum, brain regions involved in behavioral control. The goal of this work was to investigate the association between genetic variation in COMT functioning and fronto-striatal brain functioning during successful inhibitory control, a critical aspect of behavioral control. METHODS Participants were 65 (22 female) 7-12 year olds who were genotyped for the functional COMT Val158Met (rs4680) single-nucleotide polymorphism and underwent functional magnetic resonance imaging while performing a go/no-go task. The majority of the sample (80%) had at least one parent with a history of alcohol use disorder and were thus at heightened risk for substance use disorders. RESULTS There was a significant main effect of genotype on brain activation in left and right putamen during successful versus failed inhibition and in right inferior frontal gyrus/insula during successful inhibition versus baseline. Follow-up tests revealed that Met homozygotes had greater activation in each region relative to Val homozygotes. CONCLUSIONS These results are relevant for understanding how specific genes influence brain functioning related to underlying risk factors for substance use disorders and other disinhibitory psychopathologies.
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Affiliation(s)
- Lora M Cope
- Department of Psychiatry University of Michigan Ann Arbor MI USA; Addiction Center University of Michigan Ann Arbor MI USA
| | - Jillian E Hardee
- Department of Psychiatry University of Michigan Ann Arbor MI USA; Addiction Center University of Michigan Ann Arbor MI USA
| | - Mary E Soules
- Department of Psychiatry University of Michigan Ann Arbor MI USA; Addiction Center University of Michigan Ann Arbor MI USA
| | - Margit Burmeister
- Department of Psychiatry University of Michigan Ann Arbor MI USA; Molecular & Behavioral Neuroscience Institute University of Michigan Ann Arbor MI USA; Department of Human Genetics University of Michigan Ann Arbor MI USA
| | - Robert A Zucker
- Department of Psychiatry University of Michigan Ann Arbor MI USA; Addiction Center University of Michigan Ann Arbor MI USA
| | - Mary M Heitzeg
- Department of Psychiatry University of Michigan Ann Arbor MI USA; Addiction Center University of Michigan Ann Arbor MI USA
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Variants of opioid system genes are associated with non-dependent opioid use and heroin dependence. Drug Alcohol Depend 2016; 168:164-169. [PMID: 27664554 PMCID: PMC6842569 DOI: 10.1016/j.drugalcdep.2016.08.634] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Revised: 08/20/2016] [Accepted: 08/29/2016] [Indexed: 01/28/2023]
Abstract
BACKGROUND Heroin addiction is a chronic, relapsing brain disease. Genetic factors are involved in the development of drug addiction. The aim of this study was to determine whether specific variants in genes of the opioid system are associated with non-dependent opioid use and heroin dependence. METHODS Genetic information from four subject groups was collected: non-dependent opioid users (NOD) [n=163]; opioid-dependent (OD) patients in methadone maintenance treatment (MMT) [n=143]; opioid-dependent MMT-resistant patients in heroin-assisted treatment (HAT) [n=138]; and healthy controls with no history of opioid use (HC) [n=153]. Eighty-two variants in eight opioid system genes were studied. To establish the role of these genes in (a) non-dependent opioid use, and (b) heroin dependence, the following groups were compared: HC vs. NOD; HC vs. OD (MMT+HAT); and NOD vs. OD (MMT+HAT). RESULTS Five unique SNPs in four genes showed nominally significant associations with non-dependent opioid use and heroin dependence. The association of the delta opioid receptor (OPRD1) intronic SNP rs2236861 with non-dependent opioid use (HC vs. NOD) remained significant after correction for multiple testing (OR=0.032; pcorrected=0.015). This SNP exhibited a significant gene-gene interaction with prepronociceptin (PNOC) SNP rs2722897 (OR=5.24; pcorrected=0.041) (HC vs. NOD). CONCLUSIONS This study identifies several new and some previously reported associations of variants with heroin dependence and with non-dependent opioid use, an important and difficult to obtain group not extensively studied previously. Further studies are warranted to confirm and elucidate the potential roles of these variants in the vulnerability to illicit drug use and drug addiction.
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Spagnolo PA, Ramchandani VA, Schwandt ML, Kwako LE, George DT, Mayo LM, Hillard CJ, Heilig M. FAAH Gene Variation Moderates Stress Response and Symptom Severity in Patients with Posttraumatic Stress Disorder and Comorbid Alcohol Dependence. Alcohol Clin Exp Res 2016; 40:2426-2434. [PMID: 27716956 DOI: 10.1111/acer.13210] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 07/30/2016] [Indexed: 11/29/2022]
Abstract
BACKGROUND A common single nucleotide polymorphism (C385A) in the human fatty acid amide hydrolase (FAAH) gene has been associated with decreased distress responses in healthy volunteers, but its role in psychiatric disorders remains unknown. Here, we obtained genotypes and carried out a secondary analysis of subjects from a trial of comorbid posttraumatic stress disorder (PTSD) and alcohol dependence (AD). We evaluated the effects of C385A variation on behavioral and biochemical biomarkers of distress responses. METHODS Forty-nine patients with PTSD and AD were admitted for 4 weeks to an experimental medicine unit at the National Institutes of Health Clinical Center. Following detoxification, stress reactivity and peripheral endocannabinoid (eCB) levels were assessed in response to a challenge session using personalized auditory guided imagery. Over the course of the study, subjects were also evaluated for changes in PTSD symptom severity. RESULTS FAAH C385A allele carriers showed a marked increase in serum anandamide levels at baseline and throughout the stress challenge procedure compared with C allele homozygotes, while levels of eCBs primarily metabolized through other enzymatic activity, such as 2-arachidonoylglycerol, did not differ between genotype groups. FAAH C385A carriers also had decreased subjective anxiety responses to the stress challenge. Similar effects of FAAH C385A genotype were found at the level of clinical PTSD symptom severity, in particular in the arousal domain. CONCLUSIONS This is to our knowledge the first study showing that FAAH C385A variation modulates stress responses in subjects with disorders characterized by increased stress reactivity. These findings point to the eCB pathway as a promising target for future antistress therapeutics.
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Affiliation(s)
- Primavera A Spagnolo
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, Maryland
| | - Vijay A Ramchandani
- Section on Human Psychopharmacology, Division of Intramural Clinical and Biomedical Research, National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, Maryland
| | - Melanie L Schwandt
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, Maryland
| | - Laura E Kwako
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, Maryland
| | - David T George
- Office of the Clinical Director, National Institute on Alcohol Abuse and Alcoholism, NIH, Bethesda, Maryland
| | - Leah M Mayo
- Center for Social and Affective Neuroscience, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden
| | - Cecilia J Hillard
- Department of Pharmacology and Toxicology, Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Markus Heilig
- Center for Social and Affective Neuroscience, Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden.
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Elam KK, Wang FL, Bountress K, Chassin L, Pandika D, Lemery-Chalfant K. Predicting substance use in emerging adulthood: A genetically informed study of developmental transactions between impulsivity and family conflict. Dev Psychopathol 2016; 28:673-88. [PMID: 27427799 PMCID: PMC4955880 DOI: 10.1017/s0954579416000249] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Deviance proneness models propose a multilevel interplay in which transactions among genetic, individual, and family risk factors place children at increased risk for substance use. We examined bidirectional transactions between impulsivity and family conflict from middle childhood to adolescence and their contributions to substance use in adolescence and emerging adulthood (n = 380). Moreover, we examined children's, mothers', and fathers' polygenic risk scores for behavioral undercontrol, and mothers' and fathers' interparental conflict and substance disorder diagnoses as predictors of these transactions. The results support a developmental cascade model in which children's polygenic risk scores predicted greater impulsivity in middle childhood. Impulsivity in middle childhood predicted greater family conflict in late childhood, which in turn predicted greater impulsivity in late adolescence. Adolescent impulsivity subsequently predicted greater substance use in emerging adulthood. Results are discussed with respect to evocative genotype-environment correlations within developmental cascades and applications to prevention efforts.
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Soundararajan U, Yun L, Shi M, Kidd KK. Minimal SNP overlap among multiple panels of ancestry informative markers argues for more international collaboration. Forensic Sci Int Genet 2016; 23:25-32. [DOI: 10.1016/j.fsigen.2016.01.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 12/24/2015] [Accepted: 01/20/2016] [Indexed: 12/16/2022]
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