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Chen W, Hu J, Chen J, Guo Y, Hong Y, Xia H. Spatio-temporal analysis of toxigenic genes expression in the growing Bufo gargarizans based on RNA sequencing data. Genomics 2024; 116:110847. [PMID: 38685287 DOI: 10.1016/j.ygeno.2024.110847] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 03/26/2024] [Accepted: 04/19/2024] [Indexed: 05/02/2024]
Abstract
BACKGROUND Bufo gargarizans Cantor, a widely distributed amphibian species in Asia, produces and releases toxins through its retroauricular and granular glands. Although various tissues have been sequenced, the molecular mechanisms underlying the toxin production remain unclear. To elucidate these mechanisms, abdominal skin (non-toxic secretory glands) and retroauricular gland (toxic secreting glands) samples were collected at different time points (3, 6, 12, 24, and 36 months) for RNA sequencing (RNA-seq) and analysis. RESULTS In comparison to the S group during the same period, a total of 3053, 3026, 1516, 1028, and 2061 differentially expressed genes (DEGs) were identified across five developmental stages. Gene Ontology (GO) analysis revealed that DEGs were primarily enriched in biological processes including cellular processes, single-organism processes, metabolic processes, and biological regulation. In terms of cellular components, the DEGs were predominantly localized in the cell and cell parts, whereas molecular function indicated significant enrichment in binding and catalytic activity. Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis showed that the metabolism and synthesis of various substances, such as lipid metabolism, cofactor and vitamin metabolism, tryptophan metabolism, steroid biosynthesis, and primary bile acid biosynthesis, were accompanied by the development of toads. Additionally, using trend analysis, we discovered candidate genes that were upregulated in the retroauricular glands during development, and the abundance of these genes in the abdominal skin was extremely low. Finally, we identified 26 genes that are likely to be involved in toxin production and that are likely to be involved in toxin anabolism. CONCLUSION Overall, these results provide new insights into the genes involved in toxin production in B. gargarizans, which will improve our understanding of the molecular mechanisms underlying toxigenic gene expression.
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Affiliation(s)
- Wenxiao Chen
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Jinghong Hu
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; Shandong Provincial Collaborative Innovation Center for Quality Control and Construction of the Whole Industrial Chain of Traditional Chinese Medicine, Jinan 250355, China.
| | - Jing Chen
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Yuanyuan Guo
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Yongjian Hong
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
| | - Houkai Xia
- College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China; Shandong Kang Yuan Tang Pharmaceutical Co., Ltd, College of Pharmacy, Shandong University of Traditional Chinese Medicine, Jinan 250355, China
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Tagwerker C, Carias-Marines MJ, Smith DJ. Effects of Pharmacogenomic Testing in Clinical Pain Management: Retrospective Study. JMIRX MED 2022; 3:e32902. [PMID: 37725552 PMCID: PMC10414297 DOI: 10.2196/32902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 11/24/2021] [Accepted: 01/29/2022] [Indexed: 09/21/2023]
Abstract
BACKGROUND The availability of pharmacogenomic (PGx) methods to determine the right drug and dosage for individualized patient treatment has increased over the past decade. Adoption of the resulting PGx reports in a clinical setting and monitoring of clinical outcomes is a challenging and long-term commitment. OBJECTIVE This study summarizes an extended PGx deep sequencing panel intended for medication dosing and prescription guidance newly adopted in a pain management clinic. The primary outcome of this retrospective study reports the number of cases and types of drugs covered, for which PGx data appears to have assisted in optimal drug prescription and dosing. METHODS A PGx panel is described, encompassing 23 genes and 141 single-nucleotide polymorphisms or indels, combined with PGx dosing guidance and drug-gene interaction (DGI) and drug-drug interaction (DDI) reporting to prevent adverse drug reactions (ADRs). During a 2-year period, patients (N=171) were monitored in a pain management clinic. Urine toxicology, PGx reports, and progress notes were studied retrospectively for changes in prescription regimens before and after the PGx report was made available to the provider. An additional algorithm provided DGIs and DDIs to prevent ADRs. RESULTS Among patient PGx reports with medication lists provided (n=146), 57.5% (n=84) showed one or more moderate and 5.5% (n=8) at least one serious PGx interaction. A total of 96 (65.8%) patients showed at least one moderate and 15.1% (n=22) one or more serious DGIs or DDIs. A significant number of active changes in prescriptions based on the 102 PGx/DGI/DDI report results provided was observed for 85 (83.3%) patients for which a specific drug was either discontinued or switched within the defined drug classes of the report, or a new drug was added. CONCLUSIONS Preventative action was observed for all serious interactions, and only moderate interactions were tolerated for the lack of other alternatives. This study demonstrates the application of an extended PGx panel combined with a customized informational report to prevent ADRs and improve patient care.
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Affiliation(s)
| | | | - David J Smith
- Alcala Testing and Analysis Services, San Diego, CA, United States
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Calarco CA, Lobo MK. Depression and substance use disorders: Clinical comorbidity and shared neurobiology. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2020; 157:245-309. [PMID: 33648671 DOI: 10.1016/bs.irn.2020.09.004] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Mood disorders, including major depressive disorder (MDD), are the most prevalent psychiatric illnesses, and pose an incredible burden to society, both in terms of disability and in terms of costs associated with medical care and lost work time. MDD has extremely high rates of comorbidity with substance use disorders (SUD) as many of the same neurobiological circuits and molecular mechanisms regulate the reward pathways disrupted in both conditions. MDD may induce SUDs, SUD may contribute to MDD development, or underlying vulnerabilities and common life experience may confer risk to developing both conditions. In this chapter we explore theories of MDD and SUD comorbidity, the neurobiological underpinnings of depression, overlapping cellular and molecular pathways for both conditions, and current treatment approaches for these comorbid conditions.
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Affiliation(s)
- Cali A Calarco
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Mary Kay Lobo
- Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States.
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Karel P, Almacellas‐Barbanoj A, Prijn J, Kaag A, Reneman L, Verheij MM, Homberg JR. Appetitive to aversive counter-conditioning as intervention to reduce reinstatement of reward-seeking behavior: the role of the serotonin transporter. Addict Biol 2019; 24:344-354. [PMID: 29292566 DOI: 10.1111/adb.12596] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 11/10/2017] [Accepted: 12/04/2017] [Indexed: 12/20/2022]
Abstract
Counter-conditioning can be a valid strategy to reduce reinstatement of reward-seeking behavior. However, this has not been tested in laboratory animals with extended cocaine-taking backgrounds nor is it well understood, which individual differences may contribute to its effects. Here, we set out to investigate the influence of serotonin transporter (5-HTT) genotype on the effectiveness of counter-conditioning after extended access to cocaine self-administration. To this end, 5-HTT+/+ and 5-HTT-/- rats underwent a touch screen-based approach to test if reward-induced reinstatement of responding to a previously counter-conditioned cue is reduced, compared with a non-counter-conditioned cue, in a within-subject manner. We observed an overall extinction deficit of cocaine-seeking behavior in 5-HTT-/- rats and a resistance to punishment during the counter-conditioning session. Furthermore, we observed a significant decrease in reinstatement to cocaine and sucrose associated cues after counter-conditioning but only in 5-HTT+/+ rats. In short, we conclude that the paradigm we used was able to produce effects of counter-conditioning of sucrose seeking behavior in line with what is described in literature, and we demonstrate that it can be effective even after long-term exposure to cocaine, in a genotype-dependent manner.
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Affiliation(s)
- Peter Karel
- Department of Cognitive Neuroscience, Centre for NeuroscienceDonders Institute for Brain, Cognition and Behaviour The Netherlands
| | - Amanda Almacellas‐Barbanoj
- Department of Cognitive Neuroscience, Centre for NeuroscienceDonders Institute for Brain, Cognition and Behaviour The Netherlands
| | - Jeffrey Prijn
- Department of Cognitive Neuroscience, Centre for NeuroscienceDonders Institute for Brain, Cognition and Behaviour The Netherlands
| | - Anne‐Marije Kaag
- Addiction, Development, and Psychopathology (ADAPT) lab, Department of PsychologyUniversity of Amsterdam The Netherlands
- Department of Psychiatry, Academic Medical CenterUniversity of Amsterdam The Netherlands
| | - Liesbeth Reneman
- Department of Radiology and Nuclear Medicine, Academic Medical CenterUniversity of Amsterdam The Netherlands
- Amsterdam Brain and CognitionUniversity of Amsterdam The Netherlands
| | - Michel M.M. Verheij
- Department of Cognitive Neuroscience, Centre for NeuroscienceDonders Institute for Brain, Cognition and Behaviour The Netherlands
| | - Judith R. Homberg
- Department of Cognitive Neuroscience, Centre for NeuroscienceDonders Institute for Brain, Cognition and Behaviour The Netherlands
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Chang HI, Chang YT, Tsai SJ, Huang CW, Hsu SW, Liu ME, Chang WN, Lien CY, Huang SH, Lee CC, Chang CC. MAOA-VNTR Genotype Effects on Ventral Striatum-Hippocampus Network in Alzheimer's Disease: Analysis Using Structural Covariance Network and Correlation with Neurobehavior Performance. Mol Neurobiol 2018; 56:4518-4529. [PMID: 30338484 DOI: 10.1007/s12035-018-1394-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 10/11/2018] [Indexed: 01/22/2023]
Abstract
Functional polymorphisms in the promoter region of the monoamine oxidase A (MAOA) gene are associated with brain MAOA activity and transcriptional efficiency in patients with Alzheimer's disease (AD). This study investigated structural covariance networks mediated by MAOA-variable number tandem repeat (VNTR) genotypes in patients with AD, and assessed whether this effect was associated with sex. A total of 193 patients with AD were classified into four genotype groups based on MAOA transcriptional efficiency (female low [L], low-high + high activity groups [LH + H]; male L, male H groups). Structural covariance networks were constructed focusing on triple-network and striatal networks. Covariance strength was analyzed in the four groups, and the genotype and sex main effects and their interactions were analyzed. Significant peak cluster volumes were correlated with neurobehavioral scores to establish the clinical significance. MAOA genotypes mediated the structural covariance strength on the dorsolateral prefrontal cortex (dLPFC)-caudate axis in both sexes, but a higher covariance strength was shown in the female L group and male H group. The independent effect of male sex was related to higher covariance strength in the frontal medial superior region in the dLPFC, dorsal caudate (DC), and ventral superior striatum (VSs) seeds. In contrast, female sex had higher covariance strength in the frontal opercular areas anchored by the dLPFC, DC, and VSs seeds. Topographies showing higher covariance strength with sex interactions were found in the male H group and female L group in the dLPFC supplementary motor axis, DC-SMA, and DC-precentral axis. In our patients with AD, MAOA-VNTR polymorphisms and sex had independent and interactive effects on structural covariance networks, of which the dLPFC-, VSs-, and DC-anchored networks represented major endophenotypes that determined cognitive outcomes. The sex-genotype interaction model suggested that male high activity and female low activity may modulate brain morphometric connectivity and determine cognitive scores.
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Affiliation(s)
- Hsin-I Chang
- Department of General Neurology, Cognitive and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, #123, Ta-Pei Road, Niaosung, Kaohsiung County, 833, Taiwan
- Institute of Human Resource Management, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Ya-Ting Chang
- Department of General Neurology, Cognitive and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, #123, Ta-Pei Road, Niaosung, Kaohsiung County, 833, Taiwan
| | - Shih-Jen Tsai
- Psychiatric Department of Taipei Veterans General Hospital, Taipei, Taiwan
- Psychiatric Division, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chi-Wei Huang
- Department of General Neurology, Cognitive and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, #123, Ta-Pei Road, Niaosung, Kaohsiung County, 833, Taiwan
| | - Shih-Wei Hsu
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Mu-En Liu
- Psychiatric Division, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Wen-Neng Chang
- Department of General Neurology, Cognitive and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, #123, Ta-Pei Road, Niaosung, Kaohsiung County, 833, Taiwan
| | - Chia-Yi Lien
- Department of General Neurology, Cognitive and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, #123, Ta-Pei Road, Niaosung, Kaohsiung County, 833, Taiwan
| | - Shu-Hua Huang
- Department of Nuclear Medicine, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chen-Chang Lee
- Department of Radiology, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Chiung-Chih Chang
- Department of General Neurology, Cognitive and Aging Center, Kaohsiung Chang Gung Memorial Hospital, Chang Gung University College of Medicine, #123, Ta-Pei Road, Niaosung, Kaohsiung County, 833, Taiwan.
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Sharpley CF, Bitsika V, McMillan ME, Jesulola E, Agnew LL. Associations between stress and depression symptom profiles vary according to serotonin transporter polymorphism in rural Australians. Neuropsychiatr Dis Treat 2018; 14:2007-2016. [PMID: 30127611 PMCID: PMC6091248 DOI: 10.2147/ndt.s168291] [Citation(s) in RCA: 2] [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] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Depression remains difficult to treat in all cases, and further investigation of the role of genetic and environmental factors may be valuable. This study was designed to investigate the association between the short (s) versus non-short (non-s) 5HTTLPR variants, presence of childhood stressors and recent life stressors, and depression, and to do so at two levels that would expose the associations between total depression scores and also individual depression items. MATERIALS AND METHODS Two hundred and forty-nine volunteers from one of the Australian Electoral Office electorates covering a large rural land area completed a series of questionnaires about childhood and recent life stress and depression, and provided a buccal cell sample for genotyping the 5-HTTLPR polymorphism into s versus non-s carriers. RESULTS Although there were no significant differences in the depression scores of the s-carriers versus the non-s carriers, each subtype of the 5-HTTLPR polymorphism showed different patterns of association between childhood stress and depression symptoms, and between recent life stress and depression symptoms. CONCLUSION Individualization of therapy for depression may be achieved through consideration of the specific associations that patients exhibit between life stress, 5-HTTLPR polymorphism, and depression symptomatology.
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Affiliation(s)
| | - Vicki Bitsika
- Centre for Autism Spectrum Disorders, Bond University, Gold Coast, QLD, Australia
| | - Mary E McMillan
- Brain-Behaviour Research Group, University of New England, Armidale, NSW, Australia,
| | - Emmanuel Jesulola
- Brain-Behaviour Research Group, University of New England, Armidale, NSW, Australia,
| | - Linda L Agnew
- Brain-Behaviour Research Group, University of New England, Armidale, NSW, Australia,
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7
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Karel P, Calabrese F, Riva M, Brivio P, Van der Veen B, Reneman L, Verheij M, Homberg J. d-Cycloserine enhanced extinction of cocaine-induced conditioned place preference is attenuated in serotonin transporter knockout rats. Addict Biol 2018; 23:120-129. [PMID: 27957784 DOI: 10.1111/adb.12483] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 10/14/2016] [Accepted: 11/15/2016] [Indexed: 12/01/2022]
Abstract
d-Cycloserine (DCS), a partial NMDA receptor agonist, has been proposed as a cognitive enhancer to facilitate the extinction of drug-related memories. However, it is unknown whether there are individual differences in the efficacy of DCS. Here, we set out to investigate the influence of serotonin transporter (5-HTT) genotype on DCS treatment outcome and the underlying neural mechanism. To that end, we first determined the mRNA levels of several NMDA receptor subunits and observed a reduction in NR1/NR2C receptors in the ventromedial prefrontal cortex and nucleus accumbens of 5-HTT-/- compared with 5-HTT+/+ rats. Based on this finding, we hypothesized a lower sensitivity to DCS in the 5-HTT-/- rats. To test this, rats were trained in a cocaine-induced conditioned place preference (CPP) paradigm. A significant extinction of CPP was observed in 5-HTT+/+ rats receiving 1 mg/kg i.v. DCS, while a similar effect was found in the 5-HTT-/- rats only after 5 mg/kg. Following CPP, we tested if DCS were able to reduce FosB/∆FosB protein expression, a molecular switch for cocaine-seeking behaviour. We observed an overall lower number of FosB/∆FosB positive cells in 5-HTT-/- ventromedial prefrontal cortex and amygdala and an overall effect of DCS treatment on the number of positive cells in the nucleus accumbens. In conclusion, in this study, we show that the dosing of DCS to facilitate the extinction of cocaine-seeking behaviour is, at least partially, determined by 5-HTT genotype.
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Affiliation(s)
- Peter Karel
- Department of Cognitive Neuroscience, Centre for Neuroscience, Donders Institute for Brain, Cognition and Behaviour; Radboudumc; The Netherlands
| | - Francesca Calabrese
- Department of Pharmacological and Biomolecular Sciences; Universita'degli Studi di Milano; Italy
| | - Marco Riva
- Department of Pharmacological and Biomolecular Sciences; Universita'degli Studi di Milano; Italy
| | - Paola Brivio
- Department of Pharmacological and Biomolecular Sciences; Universita'degli Studi di Milano; Italy
| | - Bas Van der Veen
- Department of Cognitive Neuroscience, Centre for Neuroscience, Donders Institute for Brain, Cognition and Behaviour; Radboudumc; The Netherlands
| | - Liesbeth Reneman
- Department of Radiology, Academic Medical Center; University of Amsterdam; The Netherlands
| | - Michel Verheij
- Department of Cognitive Neuroscience, Centre for Neuroscience, Donders Institute for Brain, Cognition and Behaviour; Radboudumc; The Netherlands
| | - Judith Homberg
- Department of Cognitive Neuroscience, Centre for Neuroscience, Donders Institute for Brain, Cognition and Behaviour; Radboudumc; The Netherlands
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Andersen AM, Pietrzak RH, Kranzler HR, Ma L, Zhou H, Liu X, Kramer J, Kuperman S, Edenberg HJ, Nurnberger JI, Rice JP, Tischfield JA, Goate A, Foroud TM, Meyers JL, Porjesz B, Dick DM, Hesselbrock V, Boerwinkle E, Southwick SM, Krystal JH, Weissman MM, Levinson DF, Potash JB, Gelernter J, Han S. Polygenic Scores for Major Depressive Disorder and Risk of Alcohol Dependence. JAMA Psychiatry 2017; 74:1153-1160. [PMID: 28813562 PMCID: PMC5710224 DOI: 10.1001/jamapsychiatry.2017.2269] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/13/2017] [Indexed: 01/06/2023]
Abstract
Importance Major depressive disorder (MDD) and alcohol dependence (AD) are heritable disorders with significant public health burdens, and they are frequently comorbid. Common genetic factors that influence the co-occurrence of MDD and AD have been sought in family, twin, and adoption studies, and results to date have been promising but inconclusive. Objective To examine whether AD and MDD overlap genetically, using a polygenic score approach. Design, Settings, and Participants Association analyses were conducted between MDD polygenic risk score (PRS) and AD case-control status in European ancestry samples from 4 independent genome-wide association study (GWAS) data sets: the Collaborative Study on the Genetics of Alcoholism (COGA); the Study of Addiction, Genetics, and Environment (SAGE); the Yale-Penn genetic study of substance dependence; and the National Health and Resilience in Veterans Study (NHRVS). Results from a meta-analysis of MDD (9240 patients with MDD and 9519 controls) from the Psychiatric Genomics Consortium were applied to calculate PRS at thresholds from P < .05 to P ≤ .99 in each AD GWAS data set. Main Outcomes and Measures Association between MDD PRS and AD. Results Participants analyzed included 788 cases (548 [69.5%] men; mean [SD] age, 38.2 [10.8] years) and 522 controls (151 [28.9.%] men; age [SD], 43.9 [11.6] years) from COGA; 631 cases (333 [52.8%] men; age [SD], 35.0 [7.7] years) and 756 controls (260 [34.4%] male; age [SD] 36.1 [7.7] years) from SAGE; 2135 cases (1375 [64.4%] men; age [SD], 39.4 [11.5] years) and 350 controls (126 [36.0%] men; age [SD], 43.5 [13.9] years) from Yale-Penn; and 317 cases (295 [93.1%] men; age [SD], 59.1 [13.1] years) and 1719 controls (1545 [89.9%] men; age [SD], 64.5 [13.3] years) from NHRVS. Higher MDD PRS was associated with a significantly increased risk of AD in all samples (COGA: best P = 1.7 × 10-6, R2 = 0.026; SAGE: best P = .001, R2 = 0.01; Yale-Penn: best P = .035, R2 = 0.0018; and NHRVS: best P = .004, R2 = 0.0074), with stronger evidence for association after meta-analysis of the 4 samples (best P = 3.3 × 10-9). In analyses adjusted for MDD status in 3 AD GWAS data sets, similar patterns of association were observed (COGA: best P = 7.6 × 10-6, R2 = 0.023; Yale-Penn: best P = .08, R2 = 0.0013; and NHRVS: best P = .006, R2 = 0.0072). After recalculating MDD PRS using MDD GWAS data sets without comorbid MDD-AD cases, significant evidence was observed for an association between the MDD PRS and AD in the meta-analysis of 3 GWAS AD samples without MDD cases (best P = .007). Conclusions and Relevance These results suggest that shared genetic susceptibility contributes modestly to MDD and AD comorbidity. Individuals with elevated polygenic risk for MDD may also be at risk for AD.
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Affiliation(s)
- Allan M. Andersen
- Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City
| | - Robert H. Pietrzak
- US Department of Veterans Affairs (VA) National Center for Posttraumatic Stress Disorder, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Henry R. Kranzler
- Department of Psychiatry, University of Pennsylvania Perelman School of Medicine, Philadelphia
- Mental Illness, Research, Education and Clinical Center of Veterans Integrated Service Network 4, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, Pennsylvania
| | - Li Ma
- Department of Animal and Avian Sciences, University of Maryland, College Park
| | - Hang Zhou
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Xiaoming Liu
- Human Genetics Center, University of Texas Health Science Center at Houston
| | - John Kramer
- Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City
| | - Samuel Kuperman
- Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City
| | - Howard J. Edenberg
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis
| | - John I. Nurnberger
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis
| | - John P. Rice
- Department of Psychiatry, Washington University School of Medicine, St Louis, Missouri
| | - Jay A. Tischfield
- Department of Genetics and the Human Genetics Institute of New Jersey, Rutgers University, Piscataway
| | - Alison Goate
- Department of Neuroscience, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Tatiana M. Foroud
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis
| | - Jacquelyn L. Meyers
- Department of Psychiatry and Behavioral Sciences, State University of New York Downstate Medical Center, Brooklyn
| | - Bernice Porjesz
- Department of Psychiatry and Behavioral Sciences, State University of New York Downstate Medical Center, Brooklyn
| | - Danielle M. Dick
- Departments of Psychology and Human and Molecular Genetics, Virginia Commonwealth University, Richmond
| | - Victor Hesselbrock
- Department of Psychiatry, University of Connecticut School of Medicine, Farmington
| | - Eric Boerwinkle
- Human Genetics Center, University of Texas Health Science Center at Houston
| | - Steven M. Southwick
- US Department of Veterans Affairs (VA) National Center for Posttraumatic Stress Disorder, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - John H. Krystal
- US Department of Veterans Affairs (VA) National Center for Posttraumatic Stress Disorder, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Myrna M. Weissman
- Division of Epidemiology, New York State Psychiatric Institute, New York
- Department of Psychiatry, Columbia University, College of Physicians and Surgeons, New York, New York
- Columbia University, Mailman School of Public Health, New York, New York
| | - Douglas F. Levinson
- Department of Psychiatry and Behavioral Sciences, Stanford University, Stanford, California
| | - James B. Potash
- Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City
- Interdisciplinary Graduate Program in Genetics, University of Iowa, Iowa City
- now with the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
| | - Joel Gelernter
- US Department of Veterans Affairs (VA) National Center for Posttraumatic Stress Disorder, Clinical Neurosciences Division, VA Connecticut Healthcare System, West Haven
- Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut
| | - Shizhong Han
- Department of Psychiatry, Carver College of Medicine, University of Iowa, Iowa City
- now with the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, Maryland
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9
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Does psychological resilience buffer against the link between the 5-HTTLPR polymorphism and depression following stress. Physiol Behav 2017; 180:53-59. [DOI: 10.1016/j.physbeh.2017.07.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 12/13/2022]
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10
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Oo KZ, Aung YK, Jenkins MA, Win AK. Associations of 5HTTLPR polymorphism with major depressive disorder and alcohol dependence: A systematic review and meta-analysis. Aust N Z J Psychiatry 2016; 50:842-57. [PMID: 26979101 DOI: 10.1177/0004867416637920] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE The neurotransmitter serotonin is understood to control mood and drug response. Carrying a genetic variant in the serotonin transporter gene (5HTT) may increase the risk of major depressive disorder and alcohol dependence. Previous estimates of the association of the S allele of 5HTTLPR polymorphism with major depressive disorder and alcohol dependence have been inconsistent. METHODS For the systematic review, we used PubMed MEDLINE and Discovery of The University of Melbourne to search for all relevant case-control studies investigating the associations of 5HTTLPR polymorphism with major depressive disorder and alcohol dependence. Summary odds ratios (OR) and their 95% confidence intervals (CI) were estimated. To investigate whether year of publication, study population or diagnostic criteria used were potential sources of heterogeneity, we performed meta-regression analyses. Publication bias was assessed using Funnel plots and Egger's statistical tests. RESULTS We included 23 studies of major depressive disorder without alcohol dependence containing 3392 cases and 5093 controls, and 11 studies of alcohol dependence without major depressive disorder containing 2079 cases and 2273 controls. The summary OR for homozygote carriers of the S allele of 5HTTLPR polymorphism compared with heterozygote and non-carriers combined (SS vs SL+LL genotype) was 1.33 (95% CI = [1.19, 1.48]) for major depressive disorder and 1.18 (95% CI = [1.01, 1.38]) for alcohol dependence. The summary OR per S allele of 5HTTLPR polymorphism was 1.16 (95% CI = [1.08, 1.23]) for major depressive disorder and 1.12 (95% CI = [1.01, 1.23]) for alcohol dependence. Meta-regression models showed that the associations did not substantially change after adjusting for year of publication, study population and diagnostic criteria used. There was no evidence for publication bias of the studies included in our meta-analysis. CONCLUSIONS Our meta-analysis confirms that individuals with the homozygous S allele of 5HTTLPR polymorphism are at increased risks of major depressive disorder as well as alcohol dependence. Further studies are required to investigate the association between 5HTTLPR polymorphism and the comorbidity of major depressive disorder and alcohol dependence as well as gene × environmental interactions.
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Affiliation(s)
- Khine Zin Oo
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Carlton, VIC, Australia The Park-Centre for Mental Health, Treatment, Research and Education, Wacol, QLD, Australia
| | - Ye Kyaw Aung
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Carlton, VIC, Australia
| | - Mark A Jenkins
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Carlton, VIC, Australia
| | - Aung Ko Win
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, The University of Melbourne, Carlton, VIC, Australia
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Plemenitas A, Kastelic M, o Porcelli S, Serretti A, Dolžan V, Kores Plesnicar B. Alcohol Dependence and Genetic Variability in the Serotonin Pathway among Currently and Formerly Alcohol-Dependent Males. Neuropsychobiology 2016; 72:57-64. [PMID: 26352193 DOI: 10.1159/000437432] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 07/06/2015] [Indexed: 11/19/2022]
Abstract
BACKGROUND Genes involved in the serotonin pathway may determine the susceptibility to alcohol dependence and its severity. The present study explored whether specific polymorphisms in the serotonin pathway could be associated with alcohol dependence or alcohol-related psychopathological symptoms. METHODS The cohort comprised 101 currently and 100 formerly alcohol-dependent males, as well as 97 male healthy blood donors. The following questionnaires were employed: the Alcohol Use Disorders Identification Test, the Zung Depression and Anxiety Scale, the Brief Social Phobia Scale, the Yale-Brown Obsessive Compulsive Scale and Obsessive Compulsive Drinking Scale, and the Buss-Durkee Hostility Inventory. Subjects were genotyped for bi- and triallelic SLC6A4 5-HTTLPR,HTR1A rs6295, and HTR1B rs13212041. RESULTS Statistical differences in bi- and triallelic SLC6A4 5-HTTLPR genotype distribution were observed between the 3 groups investigated (p = 0.008 and p = 0.023, respectively); however, no gene-dose effect was observed. The severity of the alcohol problems was higher in currently alcohol-dependent subjects with the 5-HTTLPR LL (p = 0.039) and L′L′ genotypes (p = 0.027). Formerly dependent subjects with the 5-HTTLPR S′S′ genotype showed more social anxiety, depressive, and anxiety traits (p = 0.009, p = 0.006, and p = 0.036, respectively). Healthy controls with the 5-HTTLPR SS genotype showed more traits of social anxiety (p = 0.020). CONCLUSIONS Our findings suggest that bi- and triallelic SLC6A4 5-HTTLPR has some effects on the severity of alcohol dependence. Triallelic 5-HTTLPR was associated with social anxiety, anxiety, and depressive traits in alcohol-dependent subjects.
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12
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Van Assche E, Moons T, Van Leeuwen K, Colpin H, Verschueren K, Van Den Noortgate W, Goossens L, Claes S. Depressive symptoms in adolescence: The role of perceived parental support, psychological control, and proactive control in interaction with 5-HTTLPR. Eur Psychiatry 2016; 35:55-63. [PMID: 27077378 DOI: 10.1016/j.eurpsy.2016.01.2428] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Revised: 01/28/2016] [Accepted: 01/30/2016] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Parenting dimensions are associated with depressive symptoms in adolescents. We investigated the role of perceived parenting dimensions and gene-environment interactions between these perceived parenting dimensions and five well-known variable number of tandem repeats (VNTRs): 5-HTTLPR, STin2, DAT1, DRD4, and MAO-A, in depressive symptoms. METHODS From a non-clinical sample of 1111 Belgian adolescents (mean age: 13.79 years, SD=.94; 51% boys), 1103 adolescents consented for genetic research. Five VNTRs were analyzed using DNA from saliva samples. Perceived parenting dimensions (i.e., support, proactive control, psychological control, punishment, and harsh punishment) were examined using self-report scales completed by adolescents and their parents. Depressive symptoms were investigated using the CES-D self-report scale. Statistical analyses were performed in R using linear regression. RESULTS Parental support, as perceived by the adolescent, was negatively associated with depressive symptoms (CES-D) and psychological control was positively associated with these symptoms. The only interaction effect withstanding correction for multiple testing was observed for 5-HTTLPR and the difference in proactive control as perceived by adolescents in comparison to parents. Short-allele carriers showed more depressive symptoms when there was a higher discrepancy in proactive control as perceived by adolescents versus parents. CONCLUSIONS Our results suggest that perceived parenting dimensions are associated with depressive symptoms, as measured by the CES-D. We only found modest evidence for 5-HTTLPR as a moderator in the association between the difference in perception of proactive control (adolescents vs. parents) and depressive symptoms.
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Affiliation(s)
- E Van Assche
- GRASP-Research Group, Department of Neuroscience, University of Leuven, Leuven, Belgium; University Psychiatric Center KU Leuven, Leuven, Belgium.
| | - T Moons
- GRASP-Research Group, Department of Neuroscience, University of Leuven, Leuven, Belgium; OPZ Geel, Dr. Sanodreef 4, Geel, Belgium
| | - K Van Leeuwen
- Department of Parenting and Special Education, Faculty of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - H Colpin
- Department of School Psychology and Child and Adolescent Development, Faculty of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - K Verschueren
- Department of School Psychology and Child and Adolescent Development, Faculty of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - W Van Den Noortgate
- Department of Methodology of Educational Sciences, Faculty of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - L Goossens
- Department of School Psychology and Child and Adolescent Development, Faculty of Psychology and Educational Sciences, University of Leuven, Leuven, Belgium
| | - S Claes
- GRASP-Research Group, Department of Neuroscience, University of Leuven, Leuven, Belgium; University Psychiatric Center KU Leuven, Leuven, Belgium
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A review of 5-HT transporter linked promoter region (5-HTTLPR) polymorphism and associations with alcohol use problems and sexual risk behaviors. J Community Genet 2016; 7:1-10. [PMID: 26338666 PMCID: PMC4715809 DOI: 10.1007/s12687-015-0253-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Accepted: 08/27/2015] [Indexed: 01/05/2023] Open
Abstract
Alcohol use and sexual risk behaviors are multidimensional phenomena involving many genetic and environmental factors. 5-HT transporter linked promoter region (5-HTTLPR) polymorphism constitutes an important factor affecting alcohol use problems and risky sexual behaviors. This paper narratively reviews studies on 5-HTTLPR polymorphism and its associations with alcohol use problems and sexual risk behaviors. We searched the electronic databases, PubMed, Ovid, and Google Scholar for articles using MeSH terms. Relevant articles were reviewed and eligible articles were selected for the study. Many studies have reported a significant but moderate association between 5-HTTLPR polymorphism and alcohol use problems. These studies have implicated the presence of at least one S allele to be associated with significant increases in alcohol use problems. Similarly, some studies associate the S allele with increased sexual risk behaviors. Effective alcohol cessation initiatives and STI/HIV prevention programs should be modified to account for 5-HTTLPR polymorphism before planning interventions; genetic effects could moderate the intervention effect.
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14
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Saify K, Saadat M. Susceptibility to methamphetamine dependence associated with high transcriptional activity alleles of VNTR polymorphism in the promoter region of monoamine oxidase A (MAOA). EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2016. [DOI: 10.1016/j.ejmhg.2015.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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15
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A meta-analysis of the associations between the SLC6A4 promoter polymorphism (5HTTLPR) and the risk for alcohol dependence. Psychiatr Genet 2015; 25:47-58. [PMID: 25710844 DOI: 10.1097/ypg.0000000000000078] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Serotonin reuptake variation is linked to a functional polymorphism in the promoter region of the SLC6A4 gene on chromosome 17. It is plausible that variations in genetically determined SLC6A4 activity may modify the risk for alcohol dependence. To determine whether this allele is associated with alcohol dependence, the authors conducted a systematic review and meta-analysis. Twenty-five studies including 8885 participants were reviewed and analyzed. The meta-analysis was carried out using a random-effects model. Overall, the results did not support an association between alcohol dependence and the SLC6A4 promoter polymorphism for the dominant, recessive, and additive genetic risk models, respectively [odds ratio (OR)=0.99 (95% confidence interval (CI): 0.83, 1.18), OR=0.86 (95% CI: 0.71, 1.03), and OR=0.88 (95% CI: 0.69, 1.13)]. When effect modification was tested for sex, race/ethnicity, presence/absence of a psychiatric disorder, year of publication, and diagnostic criteria, none of the factors were found to be significantly associated with alcohol dependence. The findings in this meta-analysis suggest that the SLC6A4 promoter polymorphism is not associated with alcohol dependence.
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Gold MS, Badgaiyan RD, Blum K. A Shared Molecular and Genetic Basis for Food and Drug Addiction: Overcoming Hypodopaminergic Trait/State by Incorporating Dopamine Agonistic Therapy in Psychiatry. Psychiatr Clin North Am 2015; 38:419-62. [PMID: 26300032 DOI: 10.1016/j.psc.2015.05.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
This article focuses on the shared molecular and neurogenetics of food and drug addiction tied to the understanding of reward deficiency syndrome. Reward deficiency syndrome describes a hypodopaminergic trait/state that provides a rationale for commonality in approaches for treating long-term reduced dopamine function across the reward brain regions. The identification of the role of DNA polymorphic associations with reward circuitry has resulted in new understanding of all addictive behaviors.
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Affiliation(s)
- Mark S Gold
- Departments of Psychiatry & Behavioral Sciences, Keck School of Medicine, University of Southern California, 1975 Zonal Avenue, Los Angeles, CA 90033, USA; Department of Psychiatry, Washington University School of Medicine, 660 South Euclid Avenue, St. Louis, MO 63110, USA; Rivermend Health Scientific Advisory Board, 2300 Windy Ridge Parkway South East, Suite 210S, Atlanta, GA 30339, USA; Drug Enforcement Administration (DEA) Educational Foundation, Washington, DC, USA.
| | - Rajendra D Badgaiyan
- Laboratory of Advanced Radiochemistry and Molecular and Functioning Imaging, Department of Psychiatry, College of Medicine, University of Minnesota, Minneapolis, MN, USA
| | - Kenneth Blum
- Department of Psychiatry, McKnight Brain Institute, University of Florida College of Medicine, Gainesville, FL, USA; Department of Psychiatry, Center for Clinical & Translational Science, Community Mental Health Institute, University of Vermont College of Medicine, University of Vermont, Burlington, VT, USA; Division of Applied Clinical Research, Dominion Diagnostics, LLC, 211 Circuit Drive, North Kingstown, RI 02852, USA; Rivermend Health Scientific Advisory Board, Atlanta, GA, USA
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Pascale E, Ferraguti G, Codazzo C, Passarelli F, Mancinelli R, Bonvicini C, Bruno SM, Lucarelli M, Ceccanti M. Alcohol dependence and serotonin transporter functional polymorphisms 5-HTTLPR and rs25531 in an Italian population. Alcohol Alcohol 2015; 50:259-65. [PMID: 25770138 DOI: 10.1093/alcalc/agv014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/10/2015] [Indexed: 12/16/2022] Open
Abstract
AIMS The role of the serotonin transporter gene (SLC6A4) in alcohol dependence (AD) is still unclear. In this paper, we have evaluated the association of the SLC6A4 gene polymorphisms 5-HTTLPR and rs25531 in AD and assessed the polymorphic patterns both in alcoholics and in healthy people of an Italian population. METHODS Genotyping of the 5-HTTLPR (L/S) and rs25531 (A/G) polymorphisms of the SLC6A4 gene was performed on 403 alcoholics outpatients and 427 blood donors. RESULTS Comparing AD and control populations and taking into account statistical correction for multiple testing, we found no statistically significant differences for 5-HTTLPR (L/S) and rs25531 polymorphisms in terms of either genotypes or alleles frequencies. By univariate ANOVA, a statistically significant difference was found in the onset of AD: the mean age of onset resulted to be of 25.4 years in males in respect to 28.1 in females. In particular in males, the early AD onset was different, in a statistically significant manner, depending on the presence of at least one S or Lg allele (24.6 years) in respect to La homozygotes (27.5 years) (P = 0.03). CONCLUSIONS These findings suggest that genetic factors contribute, together with gender and age, to the onset differences in alcohol-dependent phenotypes.
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Affiliation(s)
- Esterina Pascale
- Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University, Rome, Italy
| | - Giampiero Ferraguti
- Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy
| | - Claudia Codazzo
- Centro Riferimento Alcologico Regione Lazio, Sapienza University, Rome, Italy
| | | | - Rosanna Mancinelli
- Centro Nazionale Sostanze Chimiche, Istituto Superiore di Sanità, Rome, Italy
| | | | - Sabina Maria Bruno
- Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy
| | - Marco Lucarelli
- Department of Cellular Biotechnologies and Hematology, Sapienza University, Rome, Italy
| | - Mauro Ceccanti
- Centro Riferimento Alcologico Regione Lazio, Sapienza University, Rome, Italy
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Liu S, Wang X, Xu L, Zheng L, Ge Y, Ma X. Family-based association study between monoamine oxidase A (MAOA) gene promoter VNTR polymorphism and Tourette's syndrome in Chinese Han population. Neurocase 2015; 21:106-8. [PMID: 24422758 DOI: 10.1080/13554794.2013.873061] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
To clarify the association of monoamine oxidase A- variable number of tandem repeat (MAOA-pVNTR) with susceptibility to Tourette's syndrome (TS) in Chinese Han population we discuss the genetic contribution of MAOA-VNTR in 141 TS patients including all their parents in Chinese Han population using transmission disequilibrium test (TDT) design. Our results revealed that no significant association was found in the MAOA gene promoter VNTR polymorphism and TS in Chinese Han population (TDT = 1.515, df = 1, p > 0.05). The negative result may be mainly due to the small sample size, but we don't deny the role of gene coding serotonergic or monoaminergic structures in the etiology of TS.
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Affiliation(s)
- Shiguo Liu
- a Shandong Provincial Key Laboratory of Metabolic Disease, The Affiliated Hospital of Medical College , Qingdao University , Qingdao 266003 , China
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Park SC, Hahn SW, Hwang TY, Kim JM, Jun TY, Lee MS, Kim JB, Yim HW, Park YC. Does age at onset of first major depressive episode indicate the subtype of major depressive disorder?: the clinical research center for depression study. Yonsei Med J 2014; 55:1712-20. [PMID: 25323911 PMCID: PMC4205714 DOI: 10.3349/ymj.2014.55.6.1712] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate the effects of age at onset of the first major depressive episode on the clinical features of individuals with major depressive disorder (MDD) in a large cohort of Korean depressed patients. MATERIALS AND METHODS We recruited 419 MDD patients of age over 18 years from the Clinical Research Center for Depression study in South Korea. At the start of the study, the onset age of the first major depressive episode was self-reported by the subjects. The subjects were divided into four age-at-onset subgroups: childhood and adolescent onset (ages <18), early adult onset (ages 18-44), middle adult onset (ages 45-59), and late onset (ages 60+). Using analysis of covariance (ANCOVA) and ordinal logistic regression analysis with adjusting the effect of age, the relationships between clinical features and age at onset of MDD were evaluated. RESULTS There was an apparent, but inconsistent correlation between clinical features and age at onset. Earlier onset MDD was significantly associated with higher proportion of female gender [adjusted odds ratio (AOR)=0.570, p=0.022], more previous suicide attempts (AOR=0.635, p=0.038), greater number of previous depressive episodes (F=3.475, p=0.016) and higher scores on the brief psychiatric rating scale (F=3.254, p=0.022), its negative symptom subscale (F=6.082, p<0.0001), and the alcohol use disorder identification test (F=7.061, p<0.0001). CONCLUSION Early age at onset may increase the likelihood of distinguishable MDD subtype, and age at onset of the first major depressive episode is a promising clinical indicator for the clinical presentation, course, and outcome of MDD.
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Affiliation(s)
- Seon-Cheol Park
- Department of Psychiatry, Yong-In Mental Hospital, Yongin, Korea.; Institute of Mental Health, Hanyang University, Seoul, Korea
| | - Sang-Woo Hahn
- Department of Psychiatry, College of Medicine, Soonchunhyang Univeristy, Seoul Hospital, Seoul, Korea
| | - Tae-Yeon Hwang
- Department of Psychiatry, Yong-In Mental Hospital, Yongin, Korea.; WHO Collaborating Center for PR and CMH, Yong-In Mental Hospital, Yongin, Korea
| | - Jae-Min Kim
- Department of Psychiatry, School of Medicine, Chonnam National University, Gwangju, Korea
| | - Tae-Youn Jun
- Department of Psychiatry, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Min-Soo Lee
- Department of Psychiatry, College of Medicine, Korea University, Seoul, Korea
| | - Jung-Bum Kim
- Department of Psychiatry, Keimyung University School of Medicine, Daegu, Korea
| | - Hyeon-Woo Yim
- Department of Preventive Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yong Chon Park
- Institute of Mental Health, Hanyang University, Seoul, Korea.; Department of Psychiatry, College of Medicine, Hanyang University, Guri Hospital, Guri, Korea.
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20
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The role of serotonin in drug use and addiction. Behav Brain Res 2014; 277:146-92. [PMID: 24769172 DOI: 10.1016/j.bbr.2014.04.007] [Citation(s) in RCA: 209] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Revised: 04/04/2014] [Accepted: 04/05/2014] [Indexed: 12/26/2022]
Abstract
The use of psychoactive drugs is a wide spread behaviour in human societies. The systematic use of a drug requires the establishment of different drug use-associated behaviours which need to be learned and controlled. However, controlled drug use may develop into compulsive drug use and addiction, a major psychiatric disorder with severe consequences for the individual and society. Here we review the role of the serotonergic (5-HT) system in the establishment of drug use-associated behaviours on the one hand and the transition and maintenance of addiction on the other hand for the drugs: cocaine, amphetamine, methamphetamine, MDMA (ecstasy), morphine/heroin, cannabis, alcohol, and nicotine. Results show a crucial, but distinct involvement of the 5-HT system in both processes with considerable overlap between psychostimulant and opioidergic drugs and alcohol. A new functional model suggests specific adaptations in the 5-HT system, which coincide with the establishment of controlled drug use-associated behaviours. These serotonergic adaptations render the nervous system susceptible to the transition to compulsive drug use behaviours and often overlap with genetic risk factors for addiction. Altogether we suggest a new trajectory by which serotonergic neuroadaptations induced by first drug exposure pave the way for the establishment of addiction.
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Cao J, Hudziak JJ, Li D. Multi-cultural association of the serotonin transporter gene (SLC6A4) with substance use disorder. Neuropsychopharmacology 2013; 38:1737-47. [PMID: 23518607 PMCID: PMC3717550 DOI: 10.1038/npp.2013.73] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2012] [Revised: 03/18/2013] [Accepted: 03/19/2013] [Indexed: 01/06/2023]
Abstract
A number of studies have reported associations between the serotonin transporter gene (SLC6A4) and alcohol, heroin, cocaine, or methamphetamine abuse. Other studies have yielded contrary results. There are a number of reasons for non-replication, including inadequate statistical power, population stratification, and poor phenotype definition. This study was to test the association using a meta-analytic approach across a variety of racial and ethnic populations. Using the genotype data of 55 studies (7999 cases, 8264 controls, and 676 families or parent-offspring trios) published in the past 15 years, we have conducted comprehensive meta-analyses to examine the associations of the 5-HTTLPR and STin2 polymorphisms with substance use disorder. The meta-analyses support the associations of 5-HTTLPR with alcohol, heroin, cocaine, and methamphetamine dependence and abuse (eg, the smallest P-values were 0.0058 with odds ratio (OR)=0.54 (0.35, 0.84); 0.0024 with OR=0.77 (0.66, 0.91); 0.018 with OR=1.38 (1.06, 1.81); and 0.028 with OR=0.46 (0.23, 0.92) for alcohol, heroin, cocaine, and methamphetamine dependence/abuse, respectively). When all the phenotypes are combined, the P-value was 0.0006 with OR=0.86 (0.78, 0.94) in the combined European, Asian, and Mexican populations and P-value was 0.0028 with OR=1.41 (1.13, 1.78) in the African populations. Evidence of significant associations was also identified in other subgroup analyses regarding differently combined substance and populations. The effect sizes of 5-HTTLPR were comparable among the European, Asian, and Mexican populations, however, the risk allele was more frequent in Asians than in Europeans and Mexicans. The opposite directions of risk allele in African population might be driven by the opposite directions of risk allele in cocaine dependence. This meta-analysis supports that the association of the SLC6A4 gene with substance use disorder varies depending on substances with different risk allele frequencies in the multi-cultural populations. Further studies using larger sample size are warranted.
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Affiliation(s)
- Jian Cao
- Department of Pathology, School of Medicine, Yale University, New Haven, CT, USA
| | - James J Hudziak
- Vermont Center for Children, Youth, and Families, Department of Psychiatry, University of Vermont, Burlington, VT, USA
| | - Dawei Li
- Department of Microbiology and Molecular Genetics, University of Vermont, Burlington, VT, USA
- Neuroscience, Behavior, and Health Initiative, University of Vermont, Burlington, VT, USA
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van der Marel K, Homberg JR, Otte WM, Dijkhuizen RM. Functional and structural neural network characterization of serotonin transporter knockout rats. PLoS One 2013; 8:e57780. [PMID: 23451267 PMCID: PMC3581479 DOI: 10.1371/journal.pone.0057780] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Accepted: 01/29/2013] [Indexed: 12/20/2022] Open
Abstract
Brain serotonin homeostasis is crucially maintained by the serotonin transporter (5-HTT), and its down-regulation has been linked to increased vulnerability for anxiety- and depression-related behavior. Studies in 5-HTT knockout (5-HTT-/-) rodents have associated inherited reduced functional expression of 5-HTT with increased sensitivity to adverse as well as rewarding environmental stimuli, and in particular cocaine hyperresponsivity. 5-HTT down-regulation may affect normal neuronal wiring of implicated corticolimbic cerebral structures. To further our understanding of its contribution to potential alterations in basal functional and structural properties of neural network configurations, we applied resting-state functional MRI (fMRI), pharmacological MRI of cocaine-induced activation, and diffusion tensor imaging (DTI) in 5-HTT-/- rats and wild-type controls (5-HTT+/+). We found that baseline functional connectivity values and cocaine-induced neural activity within the corticolimbic network was not significantly altered in 5-HTT-/- versus 5-HTT+/+ rats. Similarly, DTI revealed mostly intact white matter structural integrity, except for a reduced fractional anisotropy in the genu of the corpus callosum of 5-HTT-/- rats. At the macroscopic level, analyses of complex graphs constructed from either functional connectivity values or structural DTI-based tractography results revealed that key properties of brain network organization were essentially similar between 5-HTT+/+ and 5-HTT-/- rats. The individual tests for differences between 5-HTT+/+ and 5-HTT-/- rats were capable of detecting significant effects ranging from 5.8% (fractional anisotropy) to 26.1% (pharmacological MRI) and 29.3% (functional connectivity). Tentatively, lower fractional anisotropy in the genu of the corpus callosum could indicate a reduced capacity for information integration across hemispheres in 5-HTT-/- rats. Overall, the comparison of 5-HTT-/- and wild-type rats suggests mostly limited effects of 5-HTT genotype on MRI-based measures of brain morphology and function.
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Affiliation(s)
- Kajo van der Marel
- Biomedical MR Imaging and Spectroscopy Group, Image Sciences Institute, University Medical Center Utrecht, Utrecht, The Netherlands.
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Blum K, Oscar-Berman M, Barh D, Giordano J, Gold MS. Dopamine Genetics and Function in Food and Substance Abuse. JOURNAL OF GENETIC SYNDROMES & GENE THERAPY 2013; 4:1000121. [PMID: 23543775 PMCID: PMC3609029 DOI: 10.4172/2157-7412.1000121] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Having entered the genomics era with confidence in the future of medicine, including psychiatry, identifying the role of DNA and polymorphic associations with brain reward circuitry has led to a new understanding of all addictive behaviors. It is noteworthy that this strategy may provide treatment for the millions who are the victims of "Reward Deficiency Syndrome" (RDS) a genetic disorder of brain reward circuitry. This article will focus on drugs and food being mutuality addictive, and the role of dopamine genetics and function in addictions, including the interaction of the dopamine transporter, and sodium food. We will briefly review our concept that concerns the genetic antecedents of multiple-addictions (RDS). Studies have also shown that evaluating a panel of established reward genes and polymorphisms enables the stratification of genetic risk to RDS. The panel is called the "Genetic Addiction Risk Score (GARS)", and is a tool for the diagnosis of a genetic predisposition for RDS. The use of this test, as pointed out by others, would benefit the medical community by identifying at risk individuals at a very early age. We encourage, in depth work in both animal and human models of addiction. We encourage further exploration of the neurogenetic correlates of the commonalities between food and drug addiction and endorse forward thinking hypotheses like "The Salted Food Addiction Hypothesis".
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Affiliation(s)
- K Blum
- Department of Psychiatry & McKnight Brain Institute, College of Medicine, University of Florida, Gainesville, Florida, USA
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, West Bengal, India
- Department of Nutrigenomics, LifeGen, Inc., Austin, Texas, USA
| | - M Oscar-Berman
- Department of Anatomy & Neurobiology, Boston University School of Medicine, 72 East Concord Street, Boston, MA, USA
| | - D Barh
- Centre for Genomics and Applied Gene Technology, Institute of Integrative Omics and Applied Biotechnology (IIOAB), Nonakuri, Purba Medinipur, West Bengal, India
| | - J Giordano
- Department of Holistic Medicine, G & G Health Care Services LLC, North Miami Beach, FL, USA
| | - MS Gold
- Department of Psychiatry & McKnight Brain Institute, College of Medicine, University of Florida, Gainesville, Florida, USA
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Serotonin transporter genotype by environment: Studies on alcohol use and misuse in non-human and human primates. Transl Neurosci 2013. [DOI: 10.2478/s13380-013-0121-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
AbstractMuch evidence indicates that gene-by-environment interactions (GxE) play a role in alcohol misuse. It has been proposed that interactions between serotonin and stress confer vulnerability for alcohol misuse. The present review examined studies of the interaction between the serotonin transporter linked polymorphic region (5-HTTLPR) genotype and stressful life events and alcohol-related phenotypes, in rhesus monkeys and humans. Ten studies were found that had investigated the interaction of 5-HTTLPR and various measures of stress and alcohol use or misuse, two studies of rhesus monkeys, and eight of humans. The results are contradictory. Important differences were reported in study samples, experimental designs, measures used to assess environmental variables, definitions and measurements of alcohol-related phenotypes, and in the statistical analyses. These differences may explain the contradictory results. Guidelines for future studies are suggested. Results are discussed in light of findings from molecular, non-human animal, and clinical studies. The review highlights the need for future studies examining associations of interactions between the serotonin transporter gene and environmental factors and alcohol misuse, especially in samples followed over time.
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PASCALE ESTERINA, LUCARELLI MARCO, PASSARELLI FRANCESCA, BUTLER RICHARDH, TAMELLINI ANDREA, ADDESSI ELSA, VISALBERGHI ELISABETTA, MANCIOCCO ARIANNA, VITALE AUGUSTO, LAVIOLA GIOVANNI. Monomorphic Region of the Serotonin Transporter Promoter Gene in New World Monkeys. Am J Primatol 2012; 74:1028-34. [DOI: 10.1002/ajp.22056] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2011] [Revised: 06/11/2012] [Accepted: 06/17/2012] [Indexed: 12/31/2022]
Affiliation(s)
- ESTERINA PASCALE
- Dipartimento di Scienze e Biotecnologie Medico-Chirurgiche; Sapienza Università di Roma; Roma; Italy
| | - MARCO LUCARELLI
- Dipartimento di Biotecnologie Cellulari ed Ematologia; Sapienza Università di Roma; Roma; Italy
| | | | | | | | - ELSA ADDESSI
- Istituto di Scienze e Tecnologie della Cognizione; CNR; Roma; Italy
| | | | - ARIANNA MANCIOCCO
- Dipartimento Scienze Chimiche e Tecnologie dei Materiali; Consiglio Nazionale delle Ricerche; Roma; Italy
| | - AUGUSTO VITALE
- Dipartimento di Biologia Cellulare e Neuroscienze; Istituto Superiore di Sanità; Roma; Italy
| | - GIOVANNI LAVIOLA
- Dipartimento di Biologia Cellulare e Neuroscienze; Istituto Superiore di Sanità; Roma; Italy
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Edwards AC, Aliev F, Bierut LJ, Bucholz KK, Edenberg H, Hesselbrock V, Kramer J, Kuperman S, Nurnberger JI, Schuckit MA, Porjesz B, Dick DM. Genome-wide association study of comorbid depressive syndrome and alcohol dependence. Psychiatr Genet 2012; 22:31-41. [PMID: 22064162 PMCID: PMC3241912 DOI: 10.1097/ypg.0b013e32834acd07] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE Depression and alcohol dependence (AD) are common psychiatric disorders that often co-occur. Both disorders are genetically influenced, with heritability estimates in the range of 35-60%. In addition, evidence from twin studies suggests that AD and depression are genetically correlated. Herein, we report results from a genome-wide association study of a comorbid phenotype, in which cases meet the Diagnostic and Statistical Manual of Mental Disorders-IV symptom threshold for major depressive symptomatology and the Diagnostic and Statistical Manual of Mental Disorders-IV criteria for AD. METHODS Samples (N=467 cases and N=407 controls) were of European-American descent and were genotyped using the Illumina Human 1M BeadChip array. RESULTS Although no single-nucleotide polymorphism (SNP) meets genome-wide significance criteria, we identified 10 markers with P values less than 1 × 10(-5), seven of which are located in known genes, which have not been previously implicated in either disorder. Genes harboring SNPs yielding P values less than 1 × 10(-5) are functionally enriched for a number of gene ontology categories, notably several related to glutamatergic function. Investigation of expression localization using online resources suggests that these genes are expressed across a variety of tissues, including behaviorally relevant brain regions. Genes that have been previously associated with depression, AD, or other addiction-related phenotypes - such as CDH13, CSMD2, GRID1, and HTR1B - were implicated by nominally significant SNPs. Finally, the degree of overlap of significant SNPs between a comorbid phenotype and an AD-only phenotype is modest. CONCLUSION These results underscore the complex genomic influences on psychiatric phenotypes and suggest that a comorbid phenotype is partially influenced by genetic variants that do not affect AD alone.
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Affiliation(s)
- Alexis C Edwards
- Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, Virginia 23298-0126, USA.
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Zhua T, De Luca V, Gallaugher LA, Woldeyohannes HO, Soczynska JK, Szymcowicz S, Muzina DJ, Kennedy SH, McIntyre RS. Admixture analysis of age at onset in major depressive disorder. Gen Hosp Psychiatry 2012; 34:686-91. [PMID: 22898442 PMCID: PMC3941474 DOI: 10.1016/j.genhosppsych.2012.06.010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2012] [Revised: 06/09/2012] [Accepted: 06/12/2012] [Indexed: 10/28/2022]
Abstract
OBJECTIVES This study aimed to determine the distributions of the age at onset (AAO) in patients with major depressive disorder (MDD) using admixture analysis and to determine the clinical differences between subgroups with different AAO. METHODS Participants were administered the Mini-International Neuropsychiatric Interview to obtain clinical data. Admixture analysis was performed using the STATA module DENORMIX to identify subgroups characterized by differences in AAO. RESULTS The best fit model was the three-component model with the following means, standard deviations and proportions: 14.60 (3.75) years (49.1%), 29.15 (6.75) years (34.1%) and 46.96 (6.06) years (16.8%) (χ(2)=3.64, 2 df, P=.162). The three subgroups were divided by AAO of 22 and 40. After controlling for duration of illness, there were no significant differences between the three AAO subgroups in terms of gender and psychiatric family history. However, the early-onset subgroup was significantly more likely to report being single compared to the intermediate- and late-onset groups. The proportion of individuals meeting criteria for lifetime comorbid panic disorders and obsessive-compulsive disorder did not differ significantly between the AAO groups. However, the early-onset group reported a higher incidence of attention-deficit/hyperactivity disorder (5.1% vs. 1.7% and 1.2%, P=.086), although this was not statistically significant. CONCLUSIONS Our study identified three characteristically different AAO subgroups in individuals suffering from MDD. The subgroups may reflect different underlying neurobiological mechanisms involved.
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Affiliation(s)
| | - Vincenzo De Luca
- Clinical Research Department, Centre for Addiction and Mental Health (CAMH) Toronto, Canada,Corresponding authors. R.S. McIntyre is to be contacted at the Department of Psychiatry and Pharmacology, University of Toronto, Mood Disorders Psychopharmacology, Toronto, ON, M5T2S8. V. De Luca, Department of Psychiatry, University of Toronto, Toronto ON, Canada M5T1R8. Tel.: +1 416 5358501x4421; fax: +1 416 979 4666. (V. De Luca), (R.S. McIntyre)
| | | | | | - Joanna K. Soczynska
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada,Institute of Medical Science, University of Toronto, Toronto, ON, Canada
| | - Sarah Szymcowicz
- Center for Mood Disorders Treatment Research, Cleveland Clinic, Ohio, USA
| | - David J. Muzina
- Center for Mood Disorders Treatment Research, Cleveland Clinic, Ohio, USA
| | - Sidney H. Kennedy
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada,Institute of Medical Science, University of Toronto, Toronto, ON, Canada,Department of Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Roger S. McIntyre
- Mood Disorders Psychopharmacology Unit, University Health Network, Toronto, ON, Canada,Institute of Medical Science, University of Toronto, Toronto, ON, Canada,Department of Psychiatry, University of Toronto, Toronto, ON, Canada,Department of Pharmacology, University of Toronto, Toronto, ON, Canada,Corresponding authors. R.S. McIntyre is to be contacted at the Department of Psychiatry and Pharmacology, University of Toronto, Mood Disorders Psychopharmacology, Toronto, ON, M5T2S8. V. De Luca, Department of Psychiatry, University of Toronto, Toronto ON, Canada M5T1R8. Tel.: +1 416 5358501x4421; fax: +1 416 979 4666. (V. De Luca), (R.S. McIntyre)
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Javdani S, Sadeh N, Verona E. Expanding our lens: female pathways to antisocial behavior in adolescence and adulthood. Clin Psychol Rev 2011; 31:1324-48. [PMID: 22001339 PMCID: PMC3376007 DOI: 10.1016/j.cpr.2011.09.002] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Revised: 09/09/2011] [Accepted: 09/11/2011] [Indexed: 12/18/2022]
Abstract
Women and girls' engagement in antisocial behavior represents a psychological issue of great concern given the radiating impact that women's antisociality can have on individuals, families, and communities. Despite its importance and relevance for psychological science, this topic has received limited attention to date and no systematic review of risk factors exists. The present paper aims to systematically review the empirical literature informing risk factors relevant to women's antisocial behavior, with a focus on adolescence and adulthood. Primary aims are to 1) review empirical literatures on risk factors for female antisocial behavior across multiple levels of influence (e.g., person-level characteristics, risky family factors, and gender-salient contexts) and fields of study (e.g., psychology, sociology); 2) evaluate the relevance of each factor for female antisocial behavior; and 3) incorporate an analysis of how gender at both the individual and ecological levels shapes pathways to antisocial behavior in women and girls. We conclude that women's antisocial behavior is best-understood as being influenced by person-level or individual vulnerabilities, risky family factors, and exposure to gender-salient interpersonal contexts, and underscore the importance of examining women's antisocial behavior through an expanded lens that views gender as an individual level attribute as well as a social category that organizes the social context in ways that may promote engagement in antisocial behavior. Based on the present systematic review, an integrative pathway model is proposed toward the goal of synthesizing current knowledge and generating testable hypotheses for future research.
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Mertins V, Schote AB, Hoffeld W, Griessmair M, Meyer J. Genetic susceptibility for individual cooperation preferences: the role of monoamine oxidase A gene (MAOA) in the voluntary provision of public goods. PLoS One 2011; 6:e20959. [PMID: 21698196 PMCID: PMC3116851 DOI: 10.1371/journal.pone.0020959] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2011] [Accepted: 05/16/2011] [Indexed: 11/18/2022] Open
Abstract
In the context of social dilemmas, previous research has shown that human cooperation is mainly based on the social norm of conditional cooperation. While in most cases individuals behave according to such a norm, deviant behavior is no exception. Recent research further suggests that heterogeneity in social behavior might be associated with varying genetic predispositions. In this study, we investigated the relationship between individuals' behavior in a public goods experiment and the promoter-region functional repeat polymorphism in the monoamine oxidase A gene (MAOA). In a dynamic setting of increasing information about others' contributions, we analyzed differences in two main components of conditional cooperation, namely the players' own contribution and their beliefs regarding the contribution of other players. We showed that there is a significant association between individuals' behavior in a repeated public goods game and MAOA. Our results suggest that male carriers of the low activity alleles cooperate significantly less than those carrying the high activity alleles given a situation where subjects had to rely on their innate beliefs about others' contributions. With increasing information about the others' cooperativeness, the genetic effect diminishes. Furthermore, significant opposing effects for female subjects carrying two low activity alleles were observed.
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Affiliation(s)
- Vanessa Mertins
- Institute for Labour Law and Industrial Relations in the European Community (IAAEG), University of Trier, Trier, Germany.
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30
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Wang XJ, Zhong SR, Bao JJ, Dou SJ, Wu WY, Jing Q. [Association of polymorphism in the serotonin transporter gene promote with the susceptibility to alcohol dependence in Yunnan Han Population]. YI CHUAN = HEREDITAS 2011; 33:48-53. [PMID: 21377958 DOI: 10.3724/sp.j.1005.2011.00048] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
To explore the association of polymorphism in the serotonin transporter gene and the susceptibility to alcohol dependence in Yunnan Han population, PCR and DNA sequencing techniques were used to detect 5-HTT-linked promoter region (5-HTTLPR). One hundred and eighteen alcohol dependent patients as case group and 214 normal people as control group were employed in this study. Significant differences in genotype frequencies were present between case group and control group of 5-HTTLPR (P<0.05). The proportion of L/L and L/S genotype was significantly smaller in case group than that was in control group (OR=0.581, P=0.026). No significant association was observed in allelic frequencies, which differed in different ethnic groups. In conclusion, 5-HTTLPR polymorphism may be associated with alcohol dependent patients, and the genotype L/L or L/S may be a genetic factor that is responsible for decreasing susceptibility of alcohol dependence in Yunnan Han population.
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Affiliation(s)
- Xue-Jing Wang
- Department of Forensic Medicine, Kunming Medical University, Kunming 650500, China.
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Nilsson KW, Comasco E, Åslund C, Nordquist N, Leppert J, Oreland L. MAOA genotype, family relations and sexual abuse in relation to adolescent alcohol consumption. Addict Biol 2011; 16:347-55. [PMID: 20731636 DOI: 10.1111/j.1369-1600.2010.00238.x] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The aim of the present study was to investigate MAOA gene-environment (G*E) interactions in relation to adolescent alcohol consumption. In the county of Västmanland, Sweden, all 17-18-year-old students were asked to complete an anonymous questionnaire and provide a saliva sample during class hours. A total of 2263 students completed the questionnaire (77.4%) and a saliva sample was provided by 2131 participants. Failed MAOA u-variable number of tandem repeats (VNTR) genotype analyses and internal non-responses left 851 boys and 735 girls (total n=1586) to be investigated. Alcohol use disorder identification test was used to measure hazardous alcohol consumption. MAOA u-VNTR was used to measure biological risk in interaction with poor family relations and experience of sexual abuse. The model was also adjusted for non-independent socioeconomic variables, separated parents, type of housing and parental unemployment. Results showed that the MAOA u-VNTR, in interaction with psychosocial risk factors, such as the quality of family relations and sexual abuse, was related to high alcohol consumption among adolescents. Girls, carrying the long MAOA u-VNTR variant showed a higher risk of being high alcohol consumers, whereas among boys, the short allele was related to higher alcohol consumption. The present study supports the hypothesis that there is a relation between MAOA u-VNTR and alcohol consumption and that this relation is modulated by environmental factors. Furthermore, the present study also supports the hypothesis that there is a sex difference in the G*E interaction.
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Affiliation(s)
- Kent W Nilsson
- Centre for Clinical Research, Central Hospital, Västerås, S-721 89 Västerås, Sweden.
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Sari Y, Johnson VR, Weedman JM. Role of the serotonergic system in alcohol dependence: from animal models to clinics. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2011; 98:401-43. [PMID: 21199778 PMCID: PMC3508458 DOI: 10.1016/b978-0-12-385506-0.00010-7] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Alcohol dependence remains among the most common substance abuse problems worldwide, and compulsive alcohol consumption is a significant public health concern. Alcohol is an addictive drug that alters brain function through interactions with multiple neurotransmitter systems. These neurotransmitter systems mediate the reinforcing effects of alcohol. Specifically, the serotonergic system is important in mediating alcohol reward, preference, dependence, and craving. In this review chapter, we first discuss the serotonin system as it relates to alcoholism, and then outline interactions between this system and other neurotransmitter systems. We emphasize the serotonin transporter and its possible role in alcoholism, then present several serotonergic receptors and discuss their contribution to alcoholism, and finally assess the serotonin system as a target for pharmacotherapy, with an emphasis on current and potential treatments.
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Affiliation(s)
- Youssef Sari
- Department of Pharmacology, Health Science Campus, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, Toledo, Ohio, USA
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Landgren S, Jerlhag E, Hallman J, Oreland L, Lissner L, Strandhagen E, Thelle DS, Zetterberg H, Blennow K, Engel JA. Genetic Variation of the Ghrelin Signaling System in Females With Severe Alcohol Dependence. Alcohol Clin Exp Res 2010; 34:1519-24. [DOI: 10.1111/j.1530-0277.2010.01236.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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The serotonin transporter gene and risk for alcohol dependence: a meta-analytic review. Drug Alcohol Depend 2010; 108:1-6. [PMID: 20060655 PMCID: PMC2835838 DOI: 10.1016/j.drugalcdep.2009.11.017] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/03/2009] [Revised: 11/11/2009] [Accepted: 11/11/2009] [Indexed: 11/21/2022]
Abstract
Previous studies have implicated a relationship between particular allelic variations of the serotonin transporter gene (5HTTLPR) and alcohol dependence. To provide a current estimate of the strength of this association, particularly in light of inconsistent results for 5HTTLPR, we conducted a meta-analytic review of the association between 5HTTLPR and a clinical diagnosis of alcohol dependence. Of 145 studies initially identified, 22 (including 8050 participants) met inclusion criteria. Results indicated that there was a significant albeit modest association between alcohol dependence diagnosis and the presence of at least 1 short allele (OR=1.15, 95% CI=1.01, 1.30, p<.05). Slightly more robust results were observed for participants who were homogeneous for the short allele (OR=1.21, 95% CI=1.02, 1.44, p<.05). These results were unrelated to sex and race/ethnicity of participants; however, the effect size was moderated by study sample size and publication year. Additionally, the fail-safe N analysis indicated potential publication bias. Therefore, although our review indicates that there is a significant association between 5HTTLPR and alcohol dependence diagnosis, this result should be interpreted with caution.
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Khokhar JY, Ferguson CS, Zhu AZX, Tyndale RF. Pharmacogenetics of drug dependence: role of gene variations in susceptibility and treatment. Annu Rev Pharmacol Toxicol 2010; 50:39-61. [PMID: 20055697 DOI: 10.1146/annurev.pharmtox.010909.105826] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Drug dependency is a highly prevalent mental health disorder that imposes a significant burden on those directly affected, health care systems, and society in general. There is substantial heritability in the susceptibility to drug addiction, which indicates that there are genetic risk factors. Variation in the human genome is abundant and can directly affect drug dependency phenotypes, for example, by altering the function of a gene product or by altering gene expression. Pharmacogenetic studies can assess the effects of genetic variation on the risk for a particular phenotype (e.g., being an alcoholic). In addition, pharmacogenetic variability in treatment efficacy and adverse reactions can be investigated to identify particular genetic variants associated with altered responses. This review highlights examples of genetic variations that are important in the development and maintenance of specific drug dependencies as well as those that affect the response to treatment.
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Affiliation(s)
- Jibran Y Khokhar
- The Center for Addiction and Mental Health and the Department of Pharmacology and Toxicology, University of Toronto, Ontario, Canada
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Comasco E, Nordquist N, Göktürk C, Aslund C, Hallman J, Oreland L, Nilsson KW. The clock gene PER2 and sleep problems: association with alcohol consumption among Swedish adolescents. Ups J Med Sci 2010; 115:41-8. [PMID: 20187847 PMCID: PMC2853353 DOI: 10.3109/03009731003597127] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Alcohol abuse is associated with sleep problems, which are often linked to circadian rhythm disturbances. Previous studies have separately examined the effects of mutations in the clock gene PER2 on alcohol consumption and sleep problems. Here we hypothesized that an allelic variation in the PER2 gene is associated with alcohol consumption in interaction with sleep problems among adolescents. METHODS The Survey of Adolescent Life and Health in Västmanland 2006, a Swedish county, including 1254 students 17-18 years old, was used as a population-representative sample of adolescents. We investigated the PER2 Single Nucleotide polymorphism (SNP) 10870 (A/G) in the cohort together with an assessment of alcohol consumption according to the AUDIT-C questionnaire, and sleep problems using a survey consisting of 18 items. Furthermore, we carried out an exploratory analysis on the PER2 Single Nucleotide Polymorphism 10870 polymorphism in a group of severely alcoholic females. RESULTS We found a significant association of the SNP 10870 in adolescent boys, where the genotype AA, in the presence of several and frequent sleep problems, was associated with increased alcohol consumption. Among adolescent girls, only sleep problems were related to alcohol consumption. A non-significant trend was observed among the severely alcoholic females, with the G allele being over-represented in the severely alcoholic females group in comparision to the control females. CONCLUSION These results indicate that PER2 gene variation is associated with alcohol consumption in interaction with sleep problems among Swedish adolescent boys.
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Affiliation(s)
- Erika Comasco
- Centre for Clinical Research, Uppsala University, Central Hospital, Västerås 721 89 Västerås, Sweden.
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Dlugos AM, Palmer AA, de Wit H. Negative emotionality: monoamine oxidase B gene variants modulate personality traits in healthy humans. J Neural Transm (Vienna) 2009; 116:1323-34. [PMID: 19657584 PMCID: PMC3653168 DOI: 10.1007/s00702-009-0281-2] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2009] [Accepted: 07/22/2009] [Indexed: 01/14/2023]
Abstract
Monoamine oxidase A and B (MAOA and MAOB) appear to be involved in the pathogenesis of Major Depression, and vulnerability of Major Depression is associated with personality traits relating to positive and negative affect. This study aimed to investigate associations between MAOA and MAOB polymorphisms and personality traits of positive and negative emotionality in healthy volunteers, to elucidate mechanisms underlying personality and the risk for depression. Healthy Caucasian volunteers (N = 150) completed the Multiphasic Personality Questionnaire (MPQ), which includes independent superfactors of Positive Emotionality and Negative Emotionality. Participants were genotyped for 8 MAOA and 12 MAOB single nucleotide polymorphisms (SNPs). Association analyses for both SNPs and haplotypes were performed using the permutation approach implemented in PLINK. Negative Emotionality was significantly associated with the two highly linked MAOB polymorphisms rs10521432 and rs6651806 (p < 0.002). Findings were extended in haplotype analyses. For MAOB the 4-SNP haplotype GACG formed from rs1799836, rs10521432, rs6651806 and rs590551 was significantly related to lower Negative Emotionality scores (p < 0.002). MAOA was not related to personality in this study. Our finding provides the first evidence that MAOB polymorphisms influence levels of negative emotionality in healthy human volunteers. If confirmed, these results could lead to a better understanding of personality traits and inter-individual susceptibility developing psychiatric disorders such as major depression.
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Affiliation(s)
- Andrea M. Dlugos
- Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, 5841 S. Maryland Ave, Chicago, IL MC3077, USA,
| | - Abraham A. Palmer
- Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, 5841 S. Maryland Ave, Chicago, IL MC3077, USA
- Department of Human Genetics, The University of Chicago, Chicago, IL, USA
| | - Harriet de Wit
- Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, 5841 S. Maryland Ave, Chicago, IL MC3077, USA,
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Transcription factor AP2 beta involved in severe female alcoholism. Brain Res 2009; 1305 Suppl:S20-6. [PMID: 19778525 DOI: 10.1016/j.brainres.2009.09.054] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2009] [Revised: 09/04/2009] [Accepted: 09/15/2009] [Indexed: 12/22/2022]
Abstract
Susceptibility to alcoholism and antisocial behavior exhibits an evident link to monoaminergic neurotransmission. The serotonin system in particular, which is associated with regulation of mood and behavior, has an influence on personality characters that are firmly connected to risk of developing alcoholism and antisocial behavior, such as impulsiveness, and aggression. The transcription factor TFAP2b has repeatedly been shown to be involved in monoaminergic transmission, likely due to a regulatory effect on genes that are fundamental to this system, e.g. monoamine oxidase type A, and the serotonin transporter. Recent research has identified a functional polymorphism in the gene encoding TFAP2B that regulates its level of expression. In the present study we have compared a sample of female alcoholics (n=107), sentenced to institutional care for their severe addiction, contrasted against a control sample of adolescent females (n=875). The results showed that parental alcohol misuse was significantly more common among the alcoholic females, and also that parental alcohol misuse was associated with a reduction in age of alcohol debut. We also addressed the question of whether a functional TFAP2b polymorphism was associated with alcoholism. Results showed that the high-functioning allele was significantly more common among the female alcoholics, compared to the non-alcoholic controls. Furthermore, the results also indicated that psychosocial factors, in terms of parental alcohol misuse, depression or psychiatric disorder, had an influence on the association. It was observed that the genetic association was restricted to the subset of cases that had not experienced these negative psychosocial factors.
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Oreland S, Pickering C, Gökturk C, Oreland L, Arborelius L, Nylander I. Two repeated maternal separation procedures differentially affect brain 5-hydroxytryptamine transporter and receptors in young and adult male and female rats. Brain Res 2009; 1305 Suppl:S37-49. [PMID: 19728999 DOI: 10.1016/j.brainres.2009.08.069] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2009] [Revised: 07/30/2009] [Accepted: 08/07/2009] [Indexed: 12/29/2022]
Abstract
Early environment is a known determinant for individual differences in vulnerability for adult psychopathology, e.g., ethanol addiction. One underlying mechanism could be dysfunction in serotonergic neurotransmission. This study focused on the methodological considerations regarding an animal model for studying effects of early environment, maternal separation (MS), using two different paradigms. Age- and sex-specific effects on brain stem 5-hydroxytryptamine (5-HT) transporter and receptors were examined. Male and female rat pups were assigned to either litter-wise MS for 15 or 360 min (MS15l or MS360l) or individual MS for 15 or 360 min (MS15i or MS360i) daily during postnatal days 1-21. Normal animal facility reared rats were used as controls. Analyses were performed in young and adult rats. As compared to the other males, MS15l males had lower 5-HT(1A) and 5-HT(2C) receptor mRNA expression at both ages, lower 5-HT(2A) receptor mRNA when young and lower 5-HTT mRNA expression when adult. In contrast, adult MS15l females had higher 5-HT(2C) receptor mRNA expression than other female rats. The strong impact of MS15l on 5-HT-related genes was either transient or persistent depending on sex and fewer effects on gene expression were observed in females than in males. This study shows the importance of tactile contact for the consequences of short but not prolonged MS, as evidenced by major differences between MS15l and MS15i. The results suggest that MS15i is less suitable than MS15l to simulate a protective environment in studies of, for instance, ethanol addiction processes.
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Affiliation(s)
- Sadia Oreland
- Department of Pharmaceutical Biosciences, Division of Pharmacology, Uppsala University, P.O. Box 591, SE-751 24 Uppsala, Sweden.
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Saiz PA, Garcia-Portilla MP, Florez G, Arango C, Corcoran P, Morales B, Bascaran MT, Alvarez C, San Narciso G, Carreño E, Alvarez V, Coto E, Bobes J. Differential role of serotonergic polymorphisms in alcohol and heroin dependence. Prog Neuropsychopharmacol Biol Psychiatry 2009; 33:695-700. [PMID: 19328219 DOI: 10.1016/j.pnpbp.2009.03.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Revised: 02/23/2009] [Accepted: 03/17/2009] [Indexed: 11/26/2022]
Abstract
BACKGROUND Twin studies suggest that genetic factors account for 40-60% of the variance in alcohol dependence. It has been stated that different drug dependencies may have unique genetic influences. Alterations in serotonin availability and function can affect drinking behaviour. This study aimed to investigate whether three serotonergic polymorphisms (HTR2A A-1438G (rs6311), and SCL6A4 5-HTTLPR and STin2 VNTR) were associated with alcohol dependence, and, whether the serotonergic polymorphisms played a similar role in conferring vulnerability in alcohol and heroin dependence. METHODS 165 alcohol dependent patients, 113 heroin dependent patients, and 420 healthy controls from a homogeneous Spanish Caucasian population were genotyped using standard methods. RESULTS Genotypic frequencies of the A-1438G, 5-HTTLPR, and STin2 VNTR polymorphisms did not differ significantly across the three groups. None of the three polymorphisms contributed to distinguishing alcoholic patients from healthy controls. There was an excess of -1438G and 5-HTTLPR L carriers in alcoholic patients in comparison to the heroin dependent group (OR (95% CI)=1.98 (1.13-3.45) and 1.92 (1.07-3.44), respectively). The A-1438G and 5-HTTLPR polymorphisms also interacted in distinguishing alcohol from heroin dependent patients (Wald (df)=10.21 (4), p=0.037). The association of -1438A/G with alcohol dependence was especially pronounced in the presence of 5-HTTLPR S/S, less evident with 5-HTTLPR L/S and not present with 5-HTTLPR L/L. SCL6A4 polymorphism haplotypes were similarly distributed in all three groups. CONCLUSIONS Our data do not support a role of serotonergic polymorphisms in alcohol dependence but suggest a differential genetic background to alcohol and heroin dependence.
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Affiliation(s)
- Pilar A Saiz
- Department of Psychiatry, School of Medicine, University of Oviedo, Centro de Investigación Biomédica en Red de Salud Mental, CIBERSAM, Julian Claveria 6, 33006, Oviedo, Spain.
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