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Boroń A, Śmiarowska M, Grzywacz A, Chmielowiec K, Chmielowiec J, Masiak J, Pawłowski T, Larysz D, Ciechanowicz A. Association of Polymorphism within the Putative miRNA Target Site in the 3'UTR Region of the DRD2 Gene with Neuroticism in Patients with Substance Use Disorder. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:9955. [PMID: 36011589 PMCID: PMC9408599 DOI: 10.3390/ijerph19169955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 08/08/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
The study aims at looking into associations between the polymorphism rs6276 that occurs in the putative miRNA target site in the 3'UTR region of the DRD2 gene in patients with substance use disorder (SUD) comorbid with a maniacal syndrome (SUD MANIA). In our study, we did not state any essential difference in DRD2 rs6276 genotype frequencies in the studied samples of SUD MANIA, SUD, and control subjects. A significant result was found for the SUD MANIA group vs. SUD vs. controls on the Neuroticism Scale of NEO FFI test, and DRD2 rs6276 (p = 0.0320) accounted for 1.7% of the variance. The G/G homozygous variants were linked with lower results on the neuroticism scale in the SUD MANIA group because G/G alleles may serve a protective role in the expression of neuroticism in patients with SUD MANIA. So far, there have been no data in the literature on the relationship between the miRSNP rs6276 region in the DRD2 gene and neuroticism (personal traits) in patients with a diagnosis of substance use disorder comorbid with the affective, maniacal type disturbances related to SUD. This is the first report on this topic.
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Affiliation(s)
- Agnieszka Boroń
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University in Szczecin, Aleja Powstańców Wielkopolskich 72 St., 70-111 Szczecin, Poland
| | - Małgorzata Śmiarowska
- Department of Pharmacokinetics and Therapeutic Drug Monitoring, Pomeranian Medical University in Szczecin, Aleja Powstańcόw Wielkopolskich 72 St., 70-111 Szczecin, Poland
| | - Anna Grzywacz
- Independent Laboratory of Health Promotion, Pomeranian Medical University in Szczecin, Aleja Powstańcόw Wielkopolskich 72 St., 70-111 Szczecin, Poland
| | - Krzysztof Chmielowiec
- Department of Hygiene and Epidemiology, Collegium Medicum, University of Zielona Góra, Zyty 28 St., 65-046 Zielona Gora, Poland
| | - Jolanta Chmielowiec
- Department of Hygiene and Epidemiology, Collegium Medicum, University of Zielona Góra, Zyty 28 St., 65-046 Zielona Gora, Poland
| | - Jolanta Masiak
- Second Department of Psychiatry and Psychiatric Rehabilitation, Medical University of Lublin, Głuska 1 St., 20-059 Lublin, Poland
| | - Tomasz Pawłowski
- Division of Psychotherapy and Psychosomatic Medicine, Wroclaw Medical University, Wyb. L. Pasteura 10 St., 50-367 Wroclaw, Poland
| | - Dariusz Larysz
- 109 Military Hospital with Cutpatient Cinic in Szczecin, Piotra Skargi 9-11 St., 70-965 Szczecin, Poland
| | - Andrzej Ciechanowicz
- Department of Clinical and Molecular Biochemistry, Pomeranian Medical University in Szczecin, Aleja Powstańców Wielkopolskich 72 St., 70-111 Szczecin, Poland
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Association between DRD2 and ANKK1 polymorphisms with the deficit syndrome in schizophrenia. Ann Gen Psychiatry 2020; 19:39. [PMID: 32565876 PMCID: PMC7302002 DOI: 10.1186/s12991-020-00289-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 06/11/2020] [Indexed: 01/12/2023] Open
Abstract
BACKGROUND The clinical course of schizophrenia varies among patients and is difficult to predict. Some patient populations present persistent negative symptoms, referred to as the deficit syndrome. Compared to relatives of non-deficit schizophrenia patients, family members of this patient population are at an increased risk of developing schizophrenia. Therefore, the aim of this study was to search for genetic underpinnings of the deficit syndrome in schizophrenia. METHODS Three SNPs, i.e., rs1799732 and rs6276 located within DRD2, and rs1800497 within ANKK1, were identified in the DNA samples of 198 schizophrenia probands, including 103 patients with deficit (DS) and 95 patients with non-deficit schizophrenia (NDS). Results: No significant differences concerning any of the analyzed polymorphisms were found between DS and NDS patients. However, significant links were observed between family history of schizophrenia and the deficit syndrome, G/G genotype and rs6276 G allele. In a separate analysis, we identified significant differences in frequencies of rs6276 G allele between DS and NDS patients with family history of schizophrenia. No significant associations were found between DRD2 and ANKK1 SNPs and the age of onset or schizophrenia symptom severity. CONCLUSIONS The results of our preliminary study fail to provide evidence of associations between DRD2 and ANKK1 polymorphisms with the deficit syndrome or schizophrenia symptom severity, but suggest potential links between rs6276 in DRD2 and the deficit syndrome in patients with hereditary susceptibility to schizophrenia. However, further studies are necessary to confirm this observation.
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Scariot R, Brunet L, Olsson B, Palinkas M, Regalo SCH, Rebellato NLB, Brancher JA, Torres CP, Diaz-Serrano KV, Küchler EC, Zielak JC. Single nucleotide polymorphisms in dopamine receptor D2 are associated with bruxism and its circadian phenotypes in children. Cranio 2019; 40:152-159. [PMID: 31868570 DOI: 10.1080/08869634.2019.1705629] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Objective: To evaluate the association of bruxism phenotypes with single nucleotide polymorphisms in FKBP5, DRD2, ANKK1, and COMT.Methods: Clinical oral examination was performed to diagnose bruxism phenotypes in 150 children. DNA was collected from saliva. Logistic univariate regression, Chi-square, and Fisher's exact tests were performed (p < 0.05).Results: Bruxism was associated with DRD2 (p = 0.02). Tooth grinding while awake was associated with ANKK1 (p < 0.001), and tooth grinding while asleep was associated with DRD2 in the additive (p = 0.030) and dominant (p = 0.008) model. Tooth clenching while awake was associated with ANKK1 in the additive (p = 0.005) and dominant (p = 0.008) models, whereas tooth clenching while asleep was associated with ANKK1 (p < 0.001) and with COMT in the additive (p = 0.001) and dominant (p = 0.003) models.Discussion: Polymorphisms in DRD2, ANKK1, and COMT are associated with bruxism phenotypes.
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Affiliation(s)
- Rafaela Scariot
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil.,School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
| | - Leonardo Brunet
- School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
| | - Bernardo Olsson
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil
| | - Marcelo Palinkas
- Department of Pediatric Dentistry, University of São Paulo, Ribeirão Preto, Brazil
| | | | - Nelson Luis Barbosa Rebellato
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil
| | - João Armando Brancher
- Department of Stomatology, Department of Oral and Maxillofacial Surgery, Federal University of Paraná, Curitiba, Brazil.,School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
| | - Carolina Paes Torres
- Department of Pediatric Dentistry, University of São Paulo, Ribeirão Preto, Brazil
| | | | | | - João Cesar Zielak
- School of Health Sciences, Department of Oral and Maxillofacial Surgery, Positivo University, Curitiba, Brazil
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Qadri YJ, Bortsov AV, Orrey DC, Swor RA, Peak DA, Jones JS, Rathlev NK, Lee DC, Domeier RM, Hendry PL, Mclean SA. Genetic Polymorphisms in the Dopamine Receptor 2 Predict Acute Pain Severity After Motor Vehicle Collision. Clin J Pain 2015; 31:768-775. [PMID: 25370144 PMCID: PMC4417662 DOI: 10.1097/ajp.0000000000000167] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES Dopaminergic signaling is implicated in nociceptive pathways. These effects are mediated largely through dopamine receptors and modulated in part by dopamine transporters. This study tested the hypothesis that genetic variants in the genes encoding dopamine receptor 2 (DRD2) and the dopamine active transporter (SLC6A3) influence acute pain severity after motor vehicle collision. MATERIALS AND METHODS European Americans presenting to the emergency department after motor vehicle collision were recruited. Overall pain intensity in emergency department was assessed using a 0 to 10 numeric rating scale. DNA was extracted from blood samples and genotyping of single-nucleotide polymorphisms (SNPs) in the DRD2 and SLC6A3 gene was performed. RESULTS A total of 948 patients completed evaluation. After correction for multiple comparisons, SNP rs6276 at DRD2 showed significant association with pain scores, with individuals with the A/A genotype reporting lower mean pain scores (5.3; 95% confidence interval [CI], 5.1-5.5) than those with A/G (5.9; 95% CI, 5.6-6.1) or G/G (5.7; 95% CI, 5.2-6.2) genotypes (P=0.0027). Secondary analyses revealed an interaction between sex and DRD2 SNPs rs4586205 and rs4648318 on pain scores: females with 2 minor alleles had increased pain intensity, whereas males with 2 minor alleles had less pain than individuals with a major allele (interaction P=0.0019). DISCUSSION Genetic variants in DRD2 are associated with acute pain after a traumatic stressful event. These results suggest that dopaminergic agents may be useful for the treatment of individuals with acute posttraumatic pain as part of a multimodal opioid-sparing analgesic regimen.
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Affiliation(s)
- Yawar J Qadri
- Department of Anesthesiology, University of North Carolina, Chapel Hill, NC
| | - Andrey V Bortsov
- Department of Anesthesiology, University of North Carolina, Chapel Hill, NC
| | - Danielle C Orrey
- Department of Anesthesiology, University of North Carolina, Chapel Hill, NC
| | - Robert A Swor
- Department of Emergency Medicine, William Beaumont Hospital, Royal Oak
| | - David A Peak
- Department of Emergency Medicine, Massachusetts General Hospital, Boston
| | - Jeffrey S Jones
- Department of Emergency Medicine, Spectrum Health System, Grand Rapids
| | - Niels K Rathlev
- Department of Emergency Medicine, Bay State Medical Center, Springfield, MA
| | - David C Lee
- Department of Emergency Medicine, North Shore University Hospital, Manhasset, NY
| | - Robert M Domeier
- Department of Emergency Medicine, Saint Joseph Mercy Health System, Ypsilanti, MI
| | - Phyllis L Hendry
- Department of Emergency Medicine, University of Florida, Jacksonville, FL
| | - Samuel A Mclean
- Department of Anesthesiology, University of North Carolina, Chapel Hill, NC
- Department of Emergency Medicine, University of Florida, Jacksonville, FL
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Banerjee N. Neurotransmitters in alcoholism: A review of neurobiological and genetic studies. INDIAN JOURNAL OF HUMAN GENETICS 2014; 20:20-31. [PMID: 24959010 PMCID: PMC4065474 DOI: 10.4103/0971-6866.132750] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Recent advances in the study of alcoholism have thrown light on the involvement of various neurotransmitters in the phenomenon of alcohol addiction. Various neurotransmitters have been implicated in alcohol addiction due to their imbalance in the brain, which could be either due to their excess activity or inhibition. This review paper aims to consolidate and to summarize some of the recent papers which have been published in this regard. The review paper will give an overview of the neurobiology of alcohol addiction, followed by detailed reviews of some of the recent papers published in the context of the genetics of alcohol addiction. Furthermore, the author hopes that the present text will be found useful to novices and experts alike in the field of neurotransmitters in alcoholism.
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Affiliation(s)
- Niladri Banerjee
- Amity Institute of Biotechnology, Amity University, Noida, Uttar Pradesh, India
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Stoicea N, McVicker S, Quinones A, Agbenyefia P, Bergese SD. Delirium-biomarkers and genetic variance. Front Pharmacol 2014; 5:75. [PMID: 24795632 PMCID: PMC3997036 DOI: 10.3389/fphar.2014.00075] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Accepted: 03/28/2014] [Indexed: 11/20/2022] Open
Affiliation(s)
- Nicoleta Stoicea
- Department of Anesthesiology, Wexner Medical Center, Ohio State University Columbus, OH, USA
| | - Sean McVicker
- College of Arts and Sciences, The Ohio State University Columbus, OH, USA
| | | | | | - Sergio D Bergese
- Department of Anesthesiology, Wexner Medical Center, Ohio State University Columbus, OH, USA ; Department of Neurological Surgery, Wexner Medical Center, Ohio State University Columbus, OH, USA
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Peciña M, Mickey BJ, Love T, Wang H, Langenecker SA, Hodgkinson C, Shen PH, Villafuerte S, Hsu D, Weisenbach SL, Stohler CS, Goldman D, Zubieta JK. DRD2 polymorphisms modulate reward and emotion processing, dopamine neurotransmission and openness to experience. Cortex 2013; 49:877-90. [PMID: 22424959 PMCID: PMC3381848 DOI: 10.1016/j.cortex.2012.01.010] [Citation(s) in RCA: 92] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2011] [Revised: 12/16/2011] [Accepted: 01/13/2012] [Indexed: 01/12/2023]
Abstract
Dopamine (DA) neurotransmission through D2 receptors (DRD2) has been implicated in the regulation of reward processing, cognition and the effects of drugs of abuse, and also has significant effects in responses to stressors and salient aversive stimuli. An examination of the influence of genetic variation across multiple psychophysical measures therefore appears critical to understand the neurobiology of DA-modulated complex personality traits and psychiatric illnesses. To examine inter-individual variation in the function of DRD2 modulated mechanisms in healthy humans, we used a haplotype-based and single nucleotide polymorphism (SNP) investigation. Their effects were interrogated with functional magnetic resonance imaging during reward and emotional processing. We found that a haplotype block composed by two SNPs, rs4274224 and rs4581480, affected the hemodynamic responses of the dorsolateral prefrontal cortex (DLPFC) during reward expectation and the subgenual anterior cingulate cortices (sgACC) during implicit emotional processing. Exploratory analysis within the significant haplotype block revealed the same functional effects only for the SNP rs4274224. Further analysis on rs4274224 using functional connectivity and positron emission tomography (PET) measures of DA D2/3 receptor mediated neurotransmission confirmed a gene effect on the functional connectivity of the DLPFC during reward anticipation and subcortical stress induced DA release. At a phenotypic trait level, significant effects of genotype were obtained for the NEO PI-R "Openness to Experience" and further correlated with neuroimaging data. Overall, these results show significant neurobiological effects of genotype variation in DRD2 on multiple functional domains, such as emotional, stress and reward processing. As such, it contributes to normal variation and potentially to vulnerability to psychopathology associated with those functions, such as risk for mood and substance use disorders.
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Affiliation(s)
- Marta Peciña
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
| | - Brian J. Mickey
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
- Departments of Psychiatry and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Tiffany Love
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
| | - Heng Wang
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
| | - Scott A. Langenecker
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
- Departments of Psychiatry and Radiology, University of Michigan, Ann Arbor, Michigan
| | - Colin Hodgkinson
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, Maryland
| | - Pei-Hong Shen
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, Maryland
| | - Sandra Villafuerte
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
| | - David Hsu
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
| | - Sara L. Weisenbach
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
| | | | - David Goldman
- Laboratory of Neurogenetics, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Rockville, Maryland
| | - Jon-Kar Zubieta
- Molecular and Behavioral Neuroscience Institute, University of Michigan, Ann Arbor, Michigan
- Departments of Psychiatry and Radiology, University of Michigan, Ann Arbor, Michigan
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Lucht MJ, Barnow S, Sonnenfeld C, Ulrich I, Grabe HJ, Schroeder W, Völzke H, Freyberger HJ, John U, Herrmann FH, Kroemer H, Rosskopf D. Associations between the oxytocin receptor gene (OXTR) and "mind-reading" in humans--an exploratory study. Nord J Psychiatry 2013; 67:15-21. [PMID: 22809402 DOI: 10.3109/08039488.2012.700731] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND/AIMS The application of intranasal oxytocin enhances facial emotion recognition in normal subjects and in subjects with autism spectrum disorders (ASD). In addition, various features of social cognition have been associated with variants of the oxytocin receptor gene (OXTR). Therefore, we tested for associations between mind-reading, a measure for social recognition and OXTR polymorphisms. METHODS 76 healthy adolescents and young adults were tested for associations between OXTR rs53576, rs2254298, rs2228485 and mind-reading using the "Reading the Mind in the Eyes Test" (RMET). RESULTS After Bonferroni correction for multiple comparisons, rs2228485 was associated with the number of incorrect answers when subjects evaluated male faces (P =0.000639). There were also associations between OXTR rs53576, rs2254298 and rs2228485 and other RMET dimensions according to P <0.05 (uncorrected). CONCLUSION This study adds further evidence to the hypothesis that genetic variations in the OXTR modulate mind-reading and social behaviour.
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Affiliation(s)
- Michael J Lucht
- Hospital for Psychiatry and Psychotherapy, University of Greifswald at HELIOS-Hanseklinikum Stralsund, Rostocker Chaussee 70, Stralsund, Germany.
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Association of genetic polymorphisms with personality profile in individuals without psychiatric disorders. Prog Neuropsychopharmacol Biol Psychiatry 2012; 39:40-6. [PMID: 22542868 DOI: 10.1016/j.pnpbp.2012.04.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Revised: 04/10/2012] [Accepted: 04/10/2012] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Population-based twin studies demonstrate that approximately 40-50% of the variability in personality dimensions results from genetic factors. This study assessed selected polymorphisms in the COMT Val158Met, MAOA 3'VNTR, 5HTTLPR, 102T/C 5-HT2A, DAT 3'VNTR and DRD2 exon 8 genes and evaluated their association with personality profiles, anxiety levels, and depressiveness in healthy subjects. METHODS This study included 406 unrelated (mean age 38.51 years), mentally and somatically healthy Caucasian subjects of Polish origin. The prevalence of the gene variants mentioned above and their association with personality profiles, anxiety levels, and depressiveness was assessed using the Temperament and Character Inventory, NEO Five-Factor Inventory, Spielberger's State-Trait Anxiety Inventory and Beck's Depression Inventory. RESULTS The effects of the 5HTTLPR gene on the s/s genotype and empathy (C2) were lowest in the entire group. The effects of gender, age and the HT2A gene for the T/T genotype and attachment (RD3) were highest in women. The effects of gender, age and the DAT gene on the 9/9 DAT genotype, compassion (C4) and cooperativeness (C) were lowest in women. The effects of gender, age and the COMT gene on the Met/Met genotype and neuroticism (NEU) NEO-FFI were also lowest in women. CONCLUSIONS Our results suggest considerable influence of individual genes on the formation of personality traits.
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Chen C, Chen C, Moyzis R, He Q, Li H, Li J, Zhu B, Lessard J, Stern H, Dong Q. Genetic variations in the dopaminergic system and alcohol use: a system-level analysis. Addict Biol 2012; 17:479-89. [PMID: 21812867 DOI: 10.1111/j.1369-1600.2011.00348.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Alcohol use is highly heritable and has been associated with many gene variants, including those related to dopamine (DA). However, single gene association studies have shown inconsistent and small effects. Using a system-level approach, the current study aimed to estimate the overall effect of genetic variations in the DA system on alcohol use among male drinkers. One hundred seventy-six male college students who reported to have ever drunk alcohol were enrolled. Alcohol use was measured using the Alcohol Use Disorders Identification Test. Ninety-eight representative polymorphisms in all major DA neurotransmitter genes were genotyped. Using analysis of variance, we identified six single-nucleotide polymorphisms (SNP)s that made statistically significant contributions to alcohol use. Next, main effects and interactions of these SNPs were assessed using multiple regression. The final model accounted for approximately 20% of the variance for alcohol use. Finally, permutation analyses ascertained the probability of obtaining these findings by chance to be low, p ranging from 0.024 to 0.048. These results confirmed that DA-related gene variants made strong contributions to reported alcohol use and suggest that multiple regression can be a promising way to explore the genetic basis for multi-gene-determined human behaviors.
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Affiliation(s)
- Chunhui Chen
- State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China
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van Munster BC, de Rooij SEJA, Yazdanpanah M, Tienari PJ, Pitkälä KH, Osse RJ, Adamis D, Smit O, van der Steen MS, van Houten M, Rahkonen T, Sulkava R, Laurila JV, Strandberg TE, Tulen JHM, Zwang L, MacDonald AJD, Treloar A, Sijbrands EJG, Zwinderman AH, Korevaar JC. The association of the dopamine transporter gene and the dopamine receptor 2 gene with delirium, a meta-analysis. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:648-655. [PMID: 19739106 DOI: 10.1002/ajmg.b.31034] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Delirium is the most common neuropsychiatric syndrome in elderly ill patients. Previously, associations between delirium and the dopamine transporter gene (solute carrier family 6, member 3 (SLC6A3)) and dopamine receptor 2 gene (DRD2) were found. The aim of this study was to validate whether markers of the SLC6A3 and DRD2 genes are were associated with delirium in independent populations. Six European populations collected DNA of older delirious patients. Associations were determined per population and results were combined in a meta-analysis. In total 820 medical inpatients, 185 cardiac surgery patients, 134 non-cardiac surgery patients and 502 population-based elderly subjects were included. Mean age was 82 years (SD 7.5 years), 598 (36%) were male, 665 (41%) had pre-existing cognitive impairment, and 558 (34%) experienced delirium. The SLC6A3 rs393795 homozygous AA genotype was more frequent in patients without delirium in all populations. The meta-analysis showed an Odds Ratio (OR) for delirium of 0.4 (95% confidence interval (C.I.) 0.2-0.6, P = 0.0003) for subjects with AA genotype compared to the AG and GG genotypes. SLC6A3 marker rs1042098 showed no association with delirium. In meta-analysis the DRD2 rs6276 homozygous GG genotype showed an OR of 0.8 for delirium (95% C.I. 0.6-1.1, P = 0.24). When subjects were stratified for cognitive status the rs6276 GG genotype showed ORs of 0.6 (95% C.I. 0.4-1.0, P = 0.06) and 0.8 (95% C.I. 0.5-1.5, P = 0.51) for delirium in patients with and without cognitive impairment, respectively. In independent cohorts, a variation in the SLC6A3 gene and possibly the DRD2 gene were found to protect for delirium.
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Affiliation(s)
- Barbara C van Munster
- Department of Clinical Epidemiology and Biostatistics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands.,Department of Internal Medicine, Academic Medical Center, Amsterdam, the Netherlands
| | - Sophia E J A de Rooij
- Department of Internal Medicine, Academic Medical Center, Amsterdam, the Netherlands
| | | | - Pentti J Tienari
- Department of Neurology, Helsinki University Central Hospital and Molecular Neurology Programme, Biomedicum, University of Helsinki, Helsinki, Finland
| | - Kaisu H Pitkälä
- Helsinki University Central Hospital, Unit of General Practice, Helsinki, Finland
| | - Robert J Osse
- Department of Psychiatry, Erasmus MC, Rotterdam, the Netherlands
| | - Dimitrios Adamis
- Psychiatry, Research and Academic Institute of Athens, Athens, Greece
| | - Orla Smit
- Department of Internal Medicine, VU Medical Center, Amsterdam, the Netherlands
| | | | | | - Terhi Rahkonen
- Department of Geriatrics, School of Public Health and Clinical Nutrition, University of Kuopio, Kuopio, Finland
| | - Raimo Sulkava
- Department of Geriatrics, School of Public Health and Clinical Nutrition, University of Kuopio, Kuopio, Finland
| | - Jouko V Laurila
- Helsinki University Central Hospital, Clinics of General Internal Medicine and Geriatrics, Helsinki, Finland
| | | | - Joke H M Tulen
- Department of Psychiatry, Erasmus MC, Rotterdam, the Netherlands
| | - Louwerens Zwang
- Department of Clinical Chemistry, Erasmus MC, Rotterdam, the Netherlands
| | | | | | | | - Aeilko H Zwinderman
- Department of Clinical Epidemiology and Biostatistics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
| | - Johanna C Korevaar
- Department of Clinical Epidemiology and Biostatistics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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Prasad P, Ambekar A, Vaswani M. Dopamine D2 receptor polymorphisms and susceptibility to alcohol dependence in Indian males: a preliminary study. BMC MEDICAL GENETICS 2010; 11:24. [PMID: 20146828 PMCID: PMC2829542 DOI: 10.1186/1471-2350-11-24] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/23/2009] [Accepted: 02/11/2010] [Indexed: 12/13/2022]
Abstract
Background Dopamine is an important neurotransmitter involved in reward mechanism in the brain and thereby influences development and relapse of alcohol dependence. The dopamine D2 receptor (DRD2) gene on chromosome 11 (q22-q23) has been found to be associated with increased alcohol consumption through mechanisms involving incentive salience attributions and craving in alcoholic patients. Therefore, we investigated the association of three single nucleotide polymorphisms (SNP) in DRD2 gene with alcohol dependence in the north Indian subjects. Methods In a retrospective analysis, genetic association of three polymorphisms from DRD2 gene with alcohol dependence was investigated using a case-control approach. Alcohol dependence was determined by DSM-IV criteria and a total of 90 alcoholics and 60 healthy unrelated age-matched control subjects were recruited. Odds ratio and confidence interval was calculated to determine risk conferred by a predisposing allele/genotype/haplotype. Logistic regression analysis was carried out to correlate various clinical parameters with genotypes, and to study pair-wise interactions between SNPs. Results The study showed a significant association of -141C Ins allele and a trend of association of TaqI A1 allele of DRD2 with alcohol dependence. Haplotype with the predisposing -141C Ins and TaqI A1 alleles (-141C Ins-A-A1) seems to confer ≈ 2.5 times more risk to develop alcohol dependence. Conclusions The study provides preliminary insight into genetic risk to alcohol dependence in Indian males. Two polymorphisms namely, -141C Ins/Del and TaqI A in DRD2 gene may have clinical implications among Indian alcoholic subjects.
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Affiliation(s)
- Pushplata Prasad
- National Drug Dependence Treatment Centre, All India Institute of Medical Sciences, New Delhi, India
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van Munster BC, Yazdanpanah M, Tanck MWT, de Rooij SEJA, van de Giessen E, Sijbrands EJG, Zwinderman AH, Korevaar JC. Genetic polymorphisms in the DRD2, DRD3, and SLC6A3 gene in elderly patients with delirium. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:38-45. [PMID: 19309018 DOI: 10.1002/ajmg.b.30943] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Dopamine excess appears to be critical in the final common pathway of delirium. The aim of this study was to investigate whether genetic polymorphisms in three dopamine-related genes (the dopamine receptor 2 (DRD2), dopamine receptor 3 (DRD3), and the dopamine transporter (SLC6A3) gene) were associated with delirium. Patients aged 65 years and older acutely admitted to the medical department or to the surgical department following hip fracture were included. Delirium was diagnosed by the Confusion Assessment Method. Sixteen single nucleotide polymorphisms (SNPs) and one variable number of tandem repeats in the SLC6A3 gene, nine SNPs in the DRD2 gene, and six SNPs in the DRD3 gene were genotyped. Fifty percent of the 115 surgical patients and 34% of the 605 medical patients experienced delirium. Delirious patients were older and had more frequently pre-existing functional and cognitive impairment (P < 0.001). After correction for multiple testing, one SNP in the SLC6A3 gene (rs393795) was associated with reduced risk of delirium (P = 0.032). Adjusted for age, cognitive impairment, and functional impairment, three SNPs in the DRD2 gene and seven SNPs in the SLC6A3 gene were associated with delirium; none of these associations was significant after correction for multiple testing. Variations in the SLC6A3 gene and possibly the DRD2 gene were associated with delirium. Although validation of these results is needed our results support a role for the dopamine transporter and dopamine receptor 2 in the pathogenesis of delirium.
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Affiliation(s)
- Barbara C van Munster
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands.
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