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Wang L, Wang M, Zhao C, Jian J, Qiao D. Association of HTR3B gene polymorphisms with depression and its executive dysfunction: a case-control study. BMC Psychiatry 2023; 23:128. [PMID: 36849934 PMCID: PMC9972617 DOI: 10.1186/s12888-023-04625-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/22/2023] [Indexed: 03/01/2023] Open
Abstract
BACKGROUND Previous studies have shown that depression was associated with HTR3B gene. The aim of this study was to investigate the relationship between polymorphisms of the HTR3B gene and depression and its executive dysfunction in Chinese Han population. METHODS A total of 229 patients with depressive disorder and 202 healthy controls were enrolled. Six Single nucleotide polymorphism sites (SNPs) including rs10789970, rs4938056, rs12421126, rs1176744, rs2276305 and rs12795805 were genotyped by Snapshot. Clinical features were collected using a general demographic questionnaire. The 24-item Hamilton Depression Scale (HAMD) was used to assess the symptoms' severity of the patients. The patients' executive function was assessed using a series of cognitive tests including Maze Test, Symbolic Coding Test, Spatial Span Inverse Order Test, Linking Test, and Emotional Management Test. RESULTS The genotypic and allelic distributions of rs1176744 in HTR3B gene were significantly different (χ2 = 11.129, P = 0.004, χ2 = 9.288, P = 0.002, respectively) between patients and controls. The A allele was positively correlated with depression. The proportion of A carriers was significantly higher and that of C carriers was lower in patients than those in controls. Patients had significantly lower scores of Spatial Span Inverse Order Test in carriers of A allele at locus rs1176744 and higher scores in carriers of C alleles at locus rs1176744 and rs12795805. CONCLUSIONS The polymorphisms of HTR3B gene may be associated with depression in Chinese Han population. The A allele of rs1176744 may increase the risk of developing depression and executive dysfunction while C alleles of rs1176744 and rs12795805 may be the protective factors for executive dysfunction in patients with depression.
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Affiliation(s)
- Lina Wang
- Department of Psychology, Shandong Normal University, Jinan, 250358, Shandong, China.,Department of Psychiatry, Shandong Mental Health Center, Shandong University, Jinan, 250014, Shandong, China
| | - Miao Wang
- School of Mental Health, Jining Medical University, Jining, 272000, Shandong, China
| | - Chaoben Zhao
- School of Mental Health, Jining Medical University, Jining, 272000, Shandong, China
| | - Jia Jian
- Department of Psychiatry, Shandong Mental Health Center, Shandong University, Jinan, 250014, Shandong, China
| | - Dongdong Qiao
- Department of Psychiatry, Shandong Mental Health Center, Shandong University, Jinan, 250014, Shandong, China.
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2
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Berens S, Dong Y, Fritz N, Walstab J, D'Amato M, Zheng T, Wahl V, Boekstegers F, Bermejo JL, Martinez C, Schmitteckert S, Clevers E, Engel F, Gauss A, Herzog W, Spiller R, Goebel-Stengel M, Mönnikes H, Andresen V, Thomas F, Keller J, Pehl C, Stein-Thöringer C, Clarke G, Dinan TG, Quigley EM, Sayuk G, Simrén M, Tesarz J, Rappold G, van Oudenhove L, Schaefert R, Niesler B. Serotonin type 3 receptor subunit gene polymorphisms associated with psychosomatic symptoms in irritable bowel syndrome: A multicenter retrospective study. World J Gastroenterol 2022; 28:2334-2349. [PMID: 35800179 PMCID: PMC9185212 DOI: 10.3748/wjg.v28.i21.2334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Revised: 08/21/2021] [Accepted: 04/24/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Single-nucleotide polymorphisms (SNPs) of the serotonin type 3 receptor subunit (HTR3) genes have been associated with psychosomatic symptoms, but it is not clear whether these associations exist in irritable bowel syndrome (IBS).
AIM To assess the association of HTR3 polymorphisms with depressive, anxiety, and somatization symptoms in individuals with IBS.
METHODS In this retrospective study, 623 participants with IBS were recruited from five specialty centers in Germany, Sweden, the United States, the United Kingdom, and Ireland. Depressive, anxiety, and somatization symptoms and sociodemographic characteristics were collected. Four functional SNPs — HTR3A c.-42C>T, HTR3B c.386A>C, HTR3C c.489C>A, and HTR3E c.*76G>A — were genotyped and analyzed using the dominant and recessive models. We also performed separate analyses for sex and IBS subtypes. SNP scores were calculated as the number of minor alleles of the SNPs above. The impact of HTR3C c.489C>A was tested by radioligand-binding and calcium influx assays.
RESULTS Depressive and anxiety symptoms significantly worsened with increasing numbers of minor HTR3C c.489C>A alleles in the dominant model (Fdepressive = 7.475, Pdepressive = 0.006; Fanxiety = 6.535, Panxiety = 0.011). A higher SNP score (range 0-6) was linked to a worsened depressive symptoms score (F = 7.710, P-linear trend = 0.006) in IBS. The potential relevance of the HTR3C SNP was corroborated, showing changes in the expression level of 5-HT3AC variant receptors.
CONCLUSION We have provided the first evidence that HTR3C c.489C>A is involved in depressive and anxiety symptoms in individuals with IBS. The SNP score indicated that an increasing number of minor alleles is linked to the worsening of depressive symptoms in IBS.
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Affiliation(s)
- Sabrina Berens
- Department of General Internal Medicine and Psychosomatics, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - Yuanjun Dong
- Department of Human Molecular Genetics, Institute of Human Genetics, University of Heidelberg, Heidelberg 69120, Germany
- Department of General Internal Medicine and Psychosomatics, Internal Medicine II, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - Nikola Fritz
- Department of Human Molecular Genetics, Institute of Human Genetics, University of Heidelberg, Heidelberg 69120, Germany
| | - Jutta Walstab
- Department of Human Molecular Genetics, University of Heidelberg, Heidelberg 69120, Germany
| | - Mauro D'Amato
- Gastrointestinal Genetics Lab, CIC bioGUNE - BRTA, Derio 48160, Spain
- IKERBASQUE, Basque Foundation for Science, Bilbao 48001, Spain
- Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm 17177, Sweden
| | - Tenghao Zheng
- Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm 17177, Sweden
| | - Verena Wahl
- Department of Human Molecular Genetics, Institute of Human Genetics, University of Heidelberg, Heidelberg 69120, Germany
| | - Felix Boekstegers
- Institute of Medical Biometry and Informatics, Heidelberg University, Heidelberg 69120, Germany
| | - Justo Lorenzo Bermejo
- Institute of Medical Biometry and Informatics, Heidelberg University, Heidelberg 69120, Germany
| | - Cristina Martinez
- Department of Human Molecular Genetics, Institute of Human Genetics, University of Heidelberg, Heidelberg 69120, Germany
- Lleida Institute for Biomedical Research Dr. Pifarré Foundation (IRBLleida), Av. Alcalde Rovira Roure, Lleida 25198, Spain
| | - Stefanie Schmitteckert
- Department of Human Molecular Genetics, Institute of Human Genetics, University of Heidelberg, Heidelberg 69120, Germany
| | - Egbert Clevers
- Department of Clinical and Experimental Medicine, Translational Research Center for Gastrointestinal Disorders, KU Leuven, Leuven 3000, Belgium
| | - Felicitas Engel
- Department of General Internal Medicine and Psychosomatics, Internal Medicine II, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - Annika Gauss
- Department of Gastroenterology, Infectious Diseases and Intoxications, University of Heidelberg, Heidelberg 69120, Germany
| | - Wolfgang Herzog
- Department of General Internal Medicine and Psychosomatics, Heidelberg University, Heidelberg 69120, Germany
| | - Robin Spiller
- Nottingham Digestive Diseases Centre, University of Nottingham, Nottingham NG7 2QL, United Kingdom
| | | | - Hubert Mönnikes
- Department of Medicine, Institute of Neurogastroenterology (H.M.), Martin-Luther-Hospital, Belin 14193, Germany
| | - Viola Andresen
- Israelitisches Krankenhaus in Hamburg, Hamburg 22297, Germany
| | - Frieling Thomas
- Internal Medicine II, Helios Klinikum Krefeld, Krefeld 47805, Germany
| | - Jutta Keller
- Israelitisches Krankenhaus Hamburg, Hamburg 22297, Ghana
| | | | | | - Gerard Clarke
- Department of Psychiatry and Neurobehavioral Science, University College Cork, Cork T23, Ireland
| | - Timothy G Dinan
- Department of Psychiatry and Neurobehavioral Science, University College Cork, Cork T23, Ireland
| | - Eamonn M Quigley
- Medicine in Digestive Disorders, Department of Medicine, Lynda K. and David M. Underwood Center for Digestive Disorders, Houston Methodist, Houston, TX 77030, United States
| | - Gregory Sayuk
- Division of Gastroenterology, Washington University School of Medicine, Department of Psychiatry, School of Medicine, John Cochran Veteran Affairs Medical Center, St. Louis, MO 63110, United States
| | - Magnus Simrén
- Department of Internal Medicine, Section of Gastroenterology and Hepatology, Sahlgrenska University Hospital, Gothenburg SE-41685, Sweden
| | - Jonas Tesarz
- Department of General Internal Medicine and Psychosomatics, Internal Medicine II, University Hospital Heidelberg, Heidelberg 69120, Germany
| | - Gudrun Rappold
- Department of Human Molecular Genetics, Institute of Human Genetics, University of Heidelberg, Heidelberg 69120, Germany
- Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Heidelberg 69120, Germany
| | - Lukas van Oudenhove
- Cognitive and Affective Neuroscience Lab, Department of Psychological and Brain Sciences, Dartmouth College, Hanover, NH 03748, United States
- Laboratory for Brain-Gut Axis Studies, Translational Research Center for Gastrointestinal Disorders, Department of Chronic Diseases, Metabolism, and Ageing, KU Leuven, Leuven 3000, Belgium
| | - Rainer Schaefert
- Department of General Internal Medicine and Psychosomatics, Internal Medicine II, University Hospital Heidelberg, Heidelberg 69120, Germany
- Department of Psychosomatic Medicine, Division of Internal Medicine, University Hospital Basel, Basel CH-4031, Switzerland
| | - Beate Niesler
- Interdisciplinary Center for Neurosciences (IZN), University of Heidelberg, Heidelberg 69120, Germany
- Department of Human Molecular Genetics, Heidelberg University, Heidelberg 69120, Germany
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3
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Fritz N, Berens S, Dong Y, Martínez C, Schmitteckert S, Houghton LA, Goebel-Stengel M, Wahl V, Kabisch M, Götze D, D’Amato M, Zheng T, Röth R, Mönnikes H, Tesarz J, Engel F, Gauss A, Raithel M, Andresen V, Keller J, Frieling T, Pehl C, Stein-Thöringer C, Clarke G, Kennedy PJ, Cryan JF, Dinan TG, Quigley EMM, Spiller R, Beltrán C, Madrid AM, Torres V, Mayer EA, Sayuk G, Gazouli M, Karamanolis G, Bustamante M, Estivil X, Rabionet R, Hoffmann P, Nöthen MM, Heilmann-Heimbach S, Schmidt B, Franke A, Lieb W, Herzog W, Boeckxstaens G, Wouters MM, Simrén M, Rappold GA, Vicario M, Santos J, Schaefert R, Lorenzo-Bermejo J, Niesler B. The serotonin receptor 3E variant is a risk factor for female IBS-D. J Mol Med (Berl) 2022; 100:1617-1627. [PMID: 36121467 PMCID: PMC9592668 DOI: 10.1007/s00109-022-02244-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 07/18/2022] [Accepted: 08/04/2022] [Indexed: 12/14/2022]
Abstract
Irritable bowel syndrome (IBS) is a gut-brain disorder of multifactorial origin. Evidence of disturbed serotonergic function in IBS accumulated for the 5-HT3 receptor family. 5-HT3Rs are encoded by HTR3 genes and control GI function, and peristalsis and secretion, in particular. Moreover, 5-HT3R antagonists are beneficial in the treatment of diarrhea predominant IBS (IBS-D). We previously reported on functionally relevant SNPs in HTR3A c.-42C > T (rs1062613), HTR3C p.N163K (rs6766410), and HTR3E c.*76G > A (rs56109847 = rs62625044) being associated with IBS-D, and the HTR3B variant p.Y129S (rs1176744) was also described within the context of IBS. We performed a multi-center study to validate previous results and provide further evidence for the relevance of HTR3 genes in IBS pathogenesis. Therefore, genotype data of 2682 IBS patients and 9650 controls from 14 cohorts (Chile, Germany (2), Greece, Ireland, Spain, Sweden (2), the UK (3), and the USA (3)) were taken into account. Subsequent meta-analysis confirmed HTR3E c.*76G > A (rs56109847 = rs62625044) to be associated with female IBS-D (OR = 1.58; 95% CI (1.18, 2.12)). Complementary expression studies of four GI regions (jejunum, ileum, colon, sigmoid colon) of 66 IBS patients and 42 controls revealed only HTR3E to be robustly expressed. On top, HTR3E transcript levels were significantly reduced in the sigma of IBS patients (p = 0.0187); more specifically, in those diagnosed with IBS-D (p = 0.0145). In conclusion, meta-analysis confirmed rs56109847 = rs62625044 as a risk factor for female IBS-D. Expression analysis revealed reduced HTR3E levels in the sigmoid colon of IBS-D patients, which underlines the relevance of HTR3E in the pathogenesis of IBS-D.
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Affiliation(s)
- Nikola Fritz
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany
| | - Sabrina Berens
- grid.5253.10000 0001 0328 4908Department of General Internal Medicine and Psychosomatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Yuanjun Dong
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany
| | - Cristina Martínez
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany ,grid.420395.90000 0004 0425 020XInstitut de Recerca Biomèdica de Lleida (IRBLleida), Lleida, Spain ,Lleida Institute for Biomedical Research Dr, Pifarré Foundation (IRBLleida), Lleida, Spain
| | - Stefanie Schmitteckert
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany
| | - Lesley A. Houghton
- grid.443984.60000 0000 8813 7132University of Leeds, St. James’s University Hospital, Leeds, UK ,grid.417467.70000 0004 0443 9942Mayo Clinic, Jacksonville, FL USA
| | - Miriam Goebel-Stengel
- grid.411544.10000 0001 0196 8249Department of Psychosomatic Medicine, University Hospital Tübingen, Tübingen, Germany ,Department of Internal Medicine and Gastroenterology, HELIOS Clinic Rottweil, Rottweil, Germany
| | - Verena Wahl
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany
| | - Maria Kabisch
- grid.7700.00000 0001 2190 4373Institute of Medical Biometry and Informatics, Heidelberg University, Heidelberg, Germany
| | - Dorothea Götze
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany
| | - Mauro D’Amato
- grid.4714.60000 0004 1937 0626Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden ,grid.420175.50000 0004 0639 2420Gastrointestinal Genetics Lab, CIC bioGUNE - BRTA, Bilbao, Derio Spain ,grid.424810.b0000 0004 0467 2314IKERBASQUE, Basque Foundation for Science, Bilbao, Spain
| | - Tenghao Zheng
- grid.4714.60000 0004 1937 0626Unit of Clinical Epidemiology, Department of Medicine Solna, Karolinska Institutet, Stockholm, Sweden
| | - Ralph Röth
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany ,grid.5253.10000 0001 0328 4908nCounter Core Facility, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany
| | - Hubert Mönnikes
- grid.461755.40000 0004 0581 3852Martin-Luther-Hospital, Berlin, Germany
| | - Jonas Tesarz
- grid.5253.10000 0001 0328 4908Department of General Internal Medicine and Psychosomatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Felicitas Engel
- grid.5253.10000 0001 0328 4908Department of General Internal Medicine and Psychosomatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Annika Gauss
- grid.7700.00000 0001 2190 4373Department of Gastroenterology, Infectious Diseases and Intoxications, Heidelberg University, Heidelberg, Germany
| | - Martin Raithel
- grid.5330.50000 0001 2107 3311University of Erlangen, Erlangen, Germany
| | - Viola Andresen
- grid.414844.90000 0004 0436 8670Israelitisches Krankenhaus, Hamburg, Germany
| | - Jutta Keller
- grid.414844.90000 0004 0436 8670Israelitisches Krankenhaus, Hamburg, Germany
| | | | | | | | - Gerard Clarke
- grid.7872.a0000000123318773Department of Psychiatry and Neurobehavioral Science, University College Cork, Cork, Ireland ,grid.7872.a0000000123318773APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Paul J. Kennedy
- grid.7872.a0000000123318773Department of Psychiatry and Neurobehavioral Science, University College Cork, Cork, Ireland ,grid.7872.a0000000123318773APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - John F. Cryan
- grid.7872.a0000000123318773Department of Psychiatry and Neurobehavioral Science, University College Cork, Cork, Ireland ,grid.7872.a0000000123318773APC Microbiome Ireland, University College Cork, Cork, Ireland ,grid.7872.a0000000123318773Department of Anatomy and Neuroscience, University College Cork, Cork, Ireland
| | - Timothy G. Dinan
- grid.7872.a0000000123318773Department of Psychiatry and Neurobehavioral Science, University College Cork, Cork, Ireland ,grid.7872.a0000000123318773APC Microbiome Ireland, University College Cork, Cork, Ireland
| | - Eamonn M. M. Quigley
- grid.7872.a0000000123318773APC Microbiome Ireland, University College Cork, Cork, Ireland ,grid.63368.380000 0004 0445 0041Lynda K. and David M. Underwood Center for Digestive Disorders, Houston Methodist Hospital, Weill Cornell Medical College, Houston, TX USA
| | - Robin Spiller
- grid.4563.40000 0004 1936 8868Nottingham Digestive Diseases Centre, University of Nottingham, Nottingham, UK
| | - Caroll Beltrán
- grid.412248.90000 0004 0412 9717Gastroenterology Unit, Medicine Department, Hospital Clínico Universidad de Chile, Universidad de Chile, Santiago de Chile, Chile
| | - Ana María Madrid
- grid.412248.90000 0004 0412 9717Gastroenterology Unit, Medicine Department, Hospital Clínico Universidad de Chile, Universidad de Chile, Santiago de Chile, Chile
| | - Verónica Torres
- grid.412248.90000 0004 0412 9717Gastroenterology Unit, Medicine Department, Hospital Clínico Universidad de Chile, Universidad de Chile, Santiago de Chile, Chile
| | - Emeran A. Mayer
- grid.19006.3e0000 0000 9632 6718Oppenheimer Center for Neurobiology of Stress, University of California, Los Angeles, CA USA
| | - Gregory Sayuk
- grid.4367.60000 0001 2355 7002Washington University School of Medicine, St. Louis, MO USA
| | - Maria Gazouli
- grid.5216.00000 0001 2155 0800Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George Karamanolis
- grid.5216.00000 0001 2155 0800Academic Department of Gastroenterology, Medical School, National and Kapodistrian University of Athens, Laikon General Hospital, Athens, Greece
| | - Mariona Bustamante
- grid.11478.3b0000 0004 1766 3695CRG, Centre for Genomic Regulation, Barcelona, Spain ,grid.434607.20000 0004 1763 3517ISGlobal, Barcelona, Spain
| | - Xavier Estivil
- grid.5841.80000 0004 1937 0247Department of Genetics, Microbiology and Statistics, Faculty of Biology, IBUB, Universitat de Barcelona, CIBERER, IRSJD, Barcelona, Spain
| | - Raquel Rabionet
- grid.5841.80000 0004 1937 0247Department of Genetics, Microbiology and Statistics, Faculty of Biology, IBUB, Universitat de Barcelona, CIBERER, IRSJD, Barcelona, Spain
| | - Per Hoffmann
- grid.435715.10000 0004 0436 7643Life and Brain Center, Bonn, Germany
| | - Markus M. Nöthen
- grid.435715.10000 0004 0436 7643Life and Brain Center, Bonn, Germany
| | | | - Börge Schmidt
- grid.410718.b0000 0001 0262 7331Institute for Medical Informatics, Biometry and Epidemiology, University Hospital of Essen, Essen, Germany
| | - André Franke
- Institute of Clinical Molecular Biology, Kiel, Germany
| | - Wolfgang Lieb
- grid.417834.dInstitute of Epidemiology, Kiel, Germany
| | - Wolfgang Herzog
- grid.5253.10000 0001 0328 4908Department of General Internal Medicine and Psychosomatics, Heidelberg University Hospital, Heidelberg, Germany
| | - Guy Boeckxstaens
- grid.410569.f0000 0004 0626 3338TARGID, University Hospital Leuven, Louvain, Belgium
| | - Mira M. Wouters
- grid.410569.f0000 0004 0626 3338TARGID, University Hospital Leuven, Louvain, Belgium
| | - Magnus Simrén
- grid.8761.80000 0000 9919 9582Institute of Medicine, University of Gothenburg, Gothenburg, Sweden
| | - Gudrun A. Rappold
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany ,grid.7700.00000 0001 2190 4373Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, Heidelberg, Germany
| | - Maria Vicario
- grid.411083.f0000 0001 0675 8654Institut de Recerca Vall d Hebron, Hospital Vall d Hebron, Passeig de la Vall d Hebron, Barcelona, Spain ,grid.419905.00000 0001 0066 4948Nestlé Institute of Health Sciences, Nestlé Research, Société Des Produits Nestlé S.A, Vers-chez-les-Blanc, Lausanne, Switzerland
| | - Javier Santos
- grid.411083.f0000 0001 0675 8654Institut de Recerca Vall d Hebron, Hospital Vall d Hebron, Passeig de la Vall d Hebron, Barcelona, Spain
| | - Rainer Schaefert
- grid.410567.1Department of Psychosomatic Medicine, Division of Theragnostics, University Hospital Basel, Basel, Switzerland ,grid.6612.30000 0004 1937 0642Faculty of Medicine, University of Basel, Basel, Switzerland
| | - Justo Lorenzo-Bermejo
- grid.7700.00000 0001 2190 4373Institute of Medical Biometry and Informatics, Heidelberg University, Heidelberg, Germany
| | - Beate Niesler
- grid.5253.10000 0001 0328 4908Institute of Human Genetics, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany ,grid.5253.10000 0001 0328 4908nCounter Core Facility, Department of Human Molecular Genetics, Heidelberg University Hospital, Heidelberg, Germany ,grid.7700.00000 0001 2190 4373Interdisciplinary Center for Neurosciences (IZN), Heidelberg University, Heidelberg, Germany
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Kuo CY, Chen TY, Kao PH, Huang W, Cho CR, Lai YS, Yiang GT, Kao CF. Genetic Pathways and Functional Subnetworks for the Complex Nature of Bipolar Disorder in Genome-Wide Association Study. Front Mol Neurosci 2021; 14:772584. [PMID: 34880727 PMCID: PMC8645771 DOI: 10.3389/fnmol.2021.772584] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Accepted: 10/08/2021] [Indexed: 11/19/2022] Open
Abstract
Bipolar disorder is a complex psychiatric trait that is also recognized as a high substantial heritability from a worldwide distribution. The success in identifying susceptibility loci for bipolar disorder (BPD) has been limited due to its complex genetic architecture. Growing evidence from association studies including genome-wide association (GWA) studies points to the need of improved analytic strategies to pinpoint the missing heritability for BPD. More importantly, many studies indicate that BPD has a strong association with dementia. We conducted advanced pathway analytics strategies to investigate synergistic effects of multilocus within biologically functional pathways, and further demonstrated functional effects among proteins in subnetworks to examine mechanisms underlying the complex nature of bipolarity using a GWA dataset for BPD. We allowed bipolar susceptible loci to play a role that takes larger weights in pathway-based analytic approaches. Having significantly informative genes identified from enriched pathways, we further built function-specific subnetworks of protein interactions using MetaCore. The gene-wise scores (i.e., minimum p-value) were corrected for the gene-length, and the results were corrected for multiple tests using Benjamini and Hochberg’s method. We found 87 enriched pathways that are significant for BPD; of which 36 pathways were reported. Most of them are involved with several metabolic processes, neural systems, immune system, molecular transport, cellular communication, and signal transduction. Three significant and function-related subnetworks with multiple hotspots were reported to link with several Gene Ontology processes for BPD. Our comprehensive pathway-network frameworks demonstrated that the use of prior knowledge is promising to facilitate our understanding between complex psychiatric disorders (e.g., BPD) and dementia for the access to the connection and clinical implications, along with the development and progression of dementia.
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Affiliation(s)
- Chan-Yen Kuo
- Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan.,Department of Nursing, Cardinal Tien College of Healthcare and Management, New Taipei, Taiwan
| | - Tsu-Yi Chen
- Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan.,Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Pei-Hsiu Kao
- Department of Agronomy, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
| | - Winifred Huang
- School of Management, University of Bath, Bath, United Kingdom
| | - Chun-Ruei Cho
- Department of Agronomy, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
| | - Ya-Syuan Lai
- Department of Agronomy, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan
| | - Giou-Teng Yiang
- Department of Emergency Medicine, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan.,Department of Emergency Medicine, School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Chung-Feng Kao
- Department of Agronomy, College of Agriculture and Natural Resources, National Chung Hsing University, Taichung, Taiwan.,Advanced Plant Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
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5
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Irving H, Turek I, Kettle C, Yaakob N. Tapping into 5-HT 3 Receptors to Modify Metabolic and Immune Responses. Int J Mol Sci 2021; 22:ijms222111910. [PMID: 34769340 PMCID: PMC8584345 DOI: 10.3390/ijms222111910] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 02/07/2023] Open
Abstract
5-hydroxytryptamine type 3 (5-HT3) receptors are ligand gated ion channels, which clearly distinguish their mode of action from the other G-protein coupled 5-HT or serotonin receptors. 5-HT3 receptors are well established targets for emesis and gastrointestinal mobility and are used as adjunct targets in treating schizophrenia. However, the distribution of these receptors is wider than the nervous system and there is potential that these additional sites can be targeted to modulate inflammatory and/or metabolic conditions. Recent progress in structural biology and pharmacology of 5-HT3 receptors have provided profound insights into mechanisms of their action. These advances, combined with insights into clinical relevance of mutations in genes encoding 5-HT3 subunits and increasing understanding of their implications in patient's predisposition to diseases and response to the treatment, open new avenues for personalized precision medicine. In this review, we recap on the current status of 5-HT3 receptor-based therapies using a biochemical and physiological perspective. We assess the potential for targeting 5-HT3 receptors in conditions involving metabolic or inflammatory disorders based on recent findings, underscoring the challenges and limitations of this approach.
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Affiliation(s)
- Helen Irving
- Department of Pharmacy and Biomedical Sciences, La Trobe Institute for Molecular Science, La Trobe University, Bendigo, VIC 3550, Australia; (I.T.); (C.K.)
- Correspondence:
| | - Ilona Turek
- Department of Pharmacy and Biomedical Sciences, La Trobe Institute for Molecular Science, La Trobe University, Bendigo, VIC 3550, Australia; (I.T.); (C.K.)
| | - Christine Kettle
- Department of Pharmacy and Biomedical Sciences, La Trobe Institute for Molecular Science, La Trobe University, Bendigo, VIC 3550, Australia; (I.T.); (C.K.)
| | - Nor Yaakob
- Drug and Herbal Research Centre, Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur 50300, Malaysia;
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Nöthling J, Malan-Müller S, Abrahams N, Hemmings SMJ, Seedat S. Epigenetic alterations associated with childhood trauma and adult mental health outcomes: A systematic review. World J Biol Psychiatry 2020; 21:493-512. [PMID: 30806160 DOI: 10.1080/15622975.2019.1583369] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Objectives: Multiple, chronic and repeated trauma exposure in childhood is associated with adverse mental health outcomes in adulthood. In this paper we synthesise the literature on epigenetic modifications in childhood trauma (CT) and the mediating effects of differential epigenetic mechanisms on the association between CT and the later onset of psychiatric disorders.Methods: We reviewed the literature up to March 2018 in four databases: PubMed, Web of Science, EBSCOhost and SCOPUS. Non-human studies were excluded. All studies investigating CT exposure both in healthy adults (18 years and older) and adults with psychiatric disorders were included.Results: Thirty-six publications were included. For mood disorders, methylation of the glucocorticoid receptor NR3C1 gene, specifically at the NGFI-A binding site in exon 1F, and correlation with CT was a robust finding. Several studies documented differential methylation of SLC6A4, BDNF, OXTR and FKBP5 in association with CT. Common pathways identified include neuronal functioning and maintenance, immune and inflammatory processes, chromatin and histone modification, and transcription factor binding.Conclusions: A variety of epigenetic mediators that lie on a common pathway between CT and psychiatric disorders have been identified, although longitudinal studies and consistency in methodological approach are needed to disentangle cause and effect associations.
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Affiliation(s)
- Jani Nöthling
- Department of Psychiatry, Stellenbosch University, Cape Town, South Africa; Gender and Health Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Stefanie Malan-Müller
- Department of Psychiatry, Stellenbosch University, Cape Town, South Africa; Gender and Health Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Naeemah Abrahams
- Department of Psychiatry, Stellenbosch University, Cape Town, South Africa; Gender and Health Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Sian Megan Joanna Hemmings
- Department of Psychiatry, Stellenbosch University, Cape Town, South Africa; Gender and Health Research Unit, South African Medical Research Council, Cape Town, South Africa
| | - Soraya Seedat
- Department of Psychiatry, Stellenbosch University, Cape Town, South Africa; Gender and Health Research Unit, South African Medical Research Council, Cape Town, South Africa
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Novel susceptibility genes were found in a targeted sequencing of stroke patients with or without depression in the Chinese Han population. J Affect Disord 2019; 255:1-9. [PMID: 31121388 DOI: 10.1016/j.jad.2019.05.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 04/29/2019] [Accepted: 05/12/2019] [Indexed: 01/30/2023]
Abstract
BACKGROUND Both stroke and depression are multi-factorial diseases, with both genetic and environmental factors likely to participate in their pathogenesis. Post stroke depression (PSD) is a common complication after stroke leading to poor functional outcome, increased physical disability and mortality. Although several genes have been associated with PSD, the genetic basis of PSD remains poorly understood. METHOD A 2-stage candidate gene study by targeted sequencing was conducted involving stroke patients with or without depression and health controls. In the discovery stage (121 PSD, 131 non-PSD and 639 HC), logistic regression was used to test associations respectively in PSD and non-PSD groups. In the replication stage (200 PSD, 218 non-PSD and 983 HC), 54 selected SNPs were again genotyped in an independent cohort. Fixed-effects inverse variance-weighted meta-analysis was used in the combined samples. RESULTS The study identified 2 novel genes associated with PSD [HTR3D (rs55674402, p = 0.002512, odds ratio (OR) = 0.7431); NEUROG3 (rs144643855, p = 0.00325, OR = 0.6523)] and 3 risk SNPs in one risk gene associated with non-PSD [PIK3C2B (rs17406271, p = 0.0006801, OR = 1.446; rs2271419, p = 0.0005836, OR = 1.497; rs2271420, p = 0.001031, OR = 1.431)] in the Chinese sample. NEUROG3 shows highest expression level in hippocampus. Functional enrichment analysis shows that susceptibility genes for PSD are mostly enriched in chemical synaptic transmission and regulation of lipid synthetic process. LIMITATIONS The sample size was not sufficient to reach a genome-wide p value level. To overcome this shortage, some unique strategies were applied during the selection of SNPs for replication. Secondly, the age, gender composition and depressive severity between two stages were not well-matched. Different sample sources should be blamed, and to minimizing the influence, gender was corrected as co-variant in logistic regression. CONCLUSION This study identified that HTR3D and NEUROG3 were linked with the susceptibility of PSD and PIK3C2B with stroke in the Chinese Han population. Further replication of these findings in a larger and better matched sample is warranted. Functional analysis suggests that the pathogenesis of PSD may be implicated in 5-HT synaptic transmission, neural plasticity and lipid metabolism, and therapeutic interventions targeting these pathways may be effective approaches for PSD treatment.
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Celli J, Rappold G, Niesler B. The Human Serotonin Type 3 Receptor Gene (HTR3A-E) Allelic Variant Database. Hum Mutat 2016; 38:137-147. [PMID: 27763704 DOI: 10.1002/humu.23136] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Revised: 10/11/2016] [Accepted: 10/15/2016] [Indexed: 12/17/2022]
Abstract
Serotonin type 3 (5-HT3 ) receptors are ligand-gated ion channels formed by five subunits (5-HT3A-E), which are encoded by the HTR3A, HTR3B, HTR3C, HTR3D, and HTR3E genes. Functional receptors are pentameric complexes of diverse composition. Different receptor subtypes confer a predisposition to nausea and vomiting during chemotherapy, pregnancy, and following surgery. In addition, different subtypes contribute to neurogastroenterologic disorders such irritable bowel syndrome (IBS) and eating disorders as well as comorbid psychiatric conditions. 5-HT3 receptor antagonists are established treatments for emesis and IBS and are beneficial in the treatment of psychiatric diseases. Several case-control and pharmacogenetic studies have demonstrated an association between HTR3 variants and psychiatric and neurogastroenterologic phenotypes. Recently, their potential as predictors of nausea and vomiting and treatment of psychiatric disorders became evident. This information is now available in the serotonin receptor 3 HTR3 gene allelic variant database (www.htr3.uni-hd.de), which contains five sub-databases, one for each of the five different serotonin receptor genes HTR3A-E. Information on HTR3 variants, their functional relevance, associated phenotypes, and pharmacogenetic data such as drug response and side effects are available. This central information pool should help clinicians as well as scientists to evaluate their findings and to use the relevant information for subsequent genotype-phenotype correlation studies and pharmacogenetic approaches.
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Affiliation(s)
- Jacopo Celli
- Center of Human and Clinical Genetics, Department of Human Genetics, Leiden University Medical Center, Leiden, Netherlands
| | - Gudrun Rappold
- Department of Human Molecular Genetics, University of Heidelberg, Heidelberg, Germany
| | - Beate Niesler
- Department of Human Molecular Genetics, University of Heidelberg, Heidelberg, Germany
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Gupta D, Prabhakar V, Radhakrishnan M. 5HT3 receptors: Target for new antidepressant drugs. Neurosci Biobehav Rev 2016; 64:311-25. [PMID: 26976353 DOI: 10.1016/j.neubiorev.2016.03.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 02/29/2016] [Accepted: 03/01/2016] [Indexed: 12/31/2022]
Abstract
5HT3 receptors (5HT3Rs) have long been identified as a potential target for antidepressants. Several studies have reported that antagonism of 5HT3Rs produces antidepressant-like effects. However, the exact role of 5HT3Rs and the mode of antidepressant action of 5HT3R antagonists still remain a mystery. Here, we provide a comprehensive overview of 5HT3Rs: (a) regional and subcellular distribution of 5HT3Rs in discrete brain regions, (b) preclinical and clinical evidence supporting the antidepressant effect of 5HT3R antagonists, and (c) neurochemical, biological and neurocellular signaling pathways associated with the antidepressant action of 5HT3R antagonists. 5HT3Rs located on the serotonergic and other neurotransmitter interneuronal projections control their release and affect mood and emotional behavior; however, new evidence suggests that apart from modulating the neurotransmitter functions, 5HT3R antagonists have protective effects in the pathogenic events including hypothalamic-pituitary-adrenal-axis hyperactivity, brain oxidative stress and impaired neuronal plasticity, pointing to hereby unknown and novel mechanisms of their antidepressant action. Nonetheless, further investigations are warranted to establish the exact role of 5HT3Rs in depression and antidepressant action of 5HT3R antagonists.
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Affiliation(s)
- Deepali Gupta
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Visakh Prabhakar
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Mahesh Radhakrishnan
- Department of Pharmacy, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
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A review of genetic alterations in the serotonin pathway and their correlation with psychotic diseases and response to atypical antipsychotics. Schizophr Res 2016; 170:18-29. [PMID: 26644303 DOI: 10.1016/j.schres.2015.11.003] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 10/30/2015] [Accepted: 11/02/2015] [Indexed: 02/06/2023]
Abstract
Serotonin is a neurotransmitter that plays a predominant role in mood regulation. The importance of the serotonin pathway in controlling behavior and mental status is well recognized. All the serotonin elements - serotonin receptors, serotonin transporter, tryptophan hydroxylase and monoamine oxidase proteins - can show alterations in terms of mRNA or protein levels and protein sequence, in schizophrenia and bipolar disorder. Additionally, when examining the genes sequences of all serotonin elements, several single nucleotide polymorphisms (SNPs) have been found to be more prevalent in schizophrenic or bipolar patients than in healthy individuals. Several of these alterations have been associated either with different phenotypes between patients and healthy individuals or with the response of psychiatric patients to the treatment with atypical antipsychotics. The complex pattern of genetic diversity within the serotonin pathway hampers efforts to identify the key variations contributing to an individual's susceptibility to the disease. In this review article, we summarize all genetic alterations found across the serotonin pathway, we provide information on whether and how they affect schizophrenia or bipolar disorder phenotypes, and, on the contribution of familial relationships on their detection frequencies. Furthermore, we provide evidence on whether and how specific gene polymorphisms affect the outcome of schizophrenic or bipolar patients of different ethnic groups, in response to treatment with atypical antipsychotics. All data are discussed thoroughly, providing prospective for future studies.
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Kim MS, Lee JR, Choi EM, Kim EH, Choi SH. Association of 5-HT3B Receptor Gene Polymorphisms with the Efficacy of Ondansetron for Postoperative Nausea and Vomiting. Yonsei Med J 2015; 56:1415-20. [PMID: 26256989 PMCID: PMC4541676 DOI: 10.3349/ymj.2015.56.5.1415] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 11/20/2014] [Accepted: 12/09/2014] [Indexed: 01/17/2023] Open
Abstract
PURPOSE Postoperative nausea and vomiting (PONV) is a common problem after general anesthesia. Although 5-hydroxytryptamine type 3 (5-HT3) receptor antagonists have significantly reduced PONV, over 35% of patients treated with ondansetron can experience PONV. In this study, we investigated whether the Y129S and -100_-102AAG deletion polymorphisms of the 5-HT3B receptor gene affect the efficacy of ondansetron in preventing PONV. MATERIALS AND METHODS Two hundred and forty-five adult patients who underwent laparoscopic cholecystectomy were enrolled. Ondansetron 0.1 mg/kg was intravenously administered 30 minutes before the end of surgery. Genomic DNA was prepared from blood samples using a nucleic acid isolation device. Both the Y129S variant and the -100_-102AAG deletion variant were screened for using a single base primer extension assay and a DNA direct sequencing method, respectively. The relationship between genetic polymorphisms and clinical outcomes of ondansetron treatment was investigated. RESULTS Among the 5-HT3B AAG deletion genotypes, the incidence of PONV was higher in patients with the homomutant than with other genotypes during the first 2 hours after surgery (p=0.02). There were no significant differences in the incidence of PONV among genotypes at 2-24 hours after surgery. In the Y129S variants of the 5-HT3B receptor gene, there were no significant differences in the incidence of PONV among genotypes during the first 2 hours and at 2-24 hours after surgery. CONCLUSION The response to ondansetron for PONV was significantly influenced by the -100_-102AAG deletion polymorphisms of the 5-HT3B gene. Thus, the -100_-102AAG deletion variants may be a pharmacogenetic predictor for responsiveness to ondansetron for PONV.
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Affiliation(s)
- Min-Soo Kim
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Jeong-Rim Lee
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Eun-Mi Choi
- Department of Anesthesiology and Pain Medicine, Kangnam Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Eun Ho Kim
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Seung Ho Choi
- Department of Anesthesiology and Pain Medicine, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea.
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Hammer C, Degenhardt F, Priebe L, Stütz AM, Heilmann S, Waszak SM, Schlattl A, Mangold E, Hoffmann P, Nöthen MM, Rietschel M, Rappold G, Korbel J, Cichon S, Niesler B. A common microdeletion affecting a hippocampus- and amygdala-specific isoform of tryptophan hydroxylase 2 is not associated with affective disorders. Bipolar Disord 2014; 16:764-8. [PMID: 24754353 DOI: 10.1111/bdi.12207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2013] [Accepted: 02/11/2014] [Indexed: 11/28/2022]
Abstract
OBJECTIVES Copy number variants (CNVs) have been shown to affect susceptibility for neuropsychiatric disorders. To date, studies implicating the serotonergic system in complex conditions have just focused on single nucleotide polymorphisms (SNPs). We therefore sought to identify novel common genetic copy number polymorphisms affecting genes of the serotonergic system, and to assess their putative role in bipolar affective disorder (BPAD) and major depressive disorder (MDD). METHODS A selection of 41 genes of the serotonergic system encoding receptors, the serotonin transporter, metabolic enzymes and chaperones were investigated using a paired-end mapping (PEM) approach on next-generation sequencing data from the pilot project of the 1000 Genomes Project. For association testing, 593 patients with MDD, 1,145 patients with BPAD, and 1,738 healthy controls were included in the study. RESULTS PEM led to the identification of a microdeletion in the gene encoding tryptophan hydroxylase 2 (TPH2), affecting an amygdala- and hippocampus-specific isoform. It was not associated with BPAD or MDD using a case-control association approach. CONCLUSIONS We did not find evidence for a role of the TPH2 microdeletion in the pathoetiology of affective disorders. Further studies examining its putative role in behavioral traits regulated by the limbic system are warranted.
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Affiliation(s)
- Christian Hammer
- Department of Human Molecular Genetics, University of Heidelberg, Heidelberg, Germany
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Park HJ, Kang WS, Chung JH, Kim JW. Association between promoter polymorphism (rs10789970) in 5-hydroxytryptamine receptor 3B and poor concentration in schizophrenia. Psychiatry Res 2014; 219:235-7. [PMID: 24880582 DOI: 10.1016/j.psychres.2014.04.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 04/22/2014] [Accepted: 04/27/2014] [Indexed: 11/17/2022]
Affiliation(s)
- Hae Jeong Park
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Won Sub Kang
- Department of Neuropsychiatry, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Joo-Ho Chung
- Kohwang Medical Research Institute, School of Medicine, Kyung Hee University, Seoul, Republic of Korea
| | - Jong Woo Kim
- Department of Neuropsychiatry, School of Medicine, Kyung Hee University, Seoul, Republic of Korea.
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Seneviratne C, Franklin J, Beckett K, Ma JZ, Ait-Daoud N, Payne TJ, Johnson BA, Li MD. Association, interaction, and replication analysis of genes encoding serotonin transporter and 5-HT3 receptor subunits A and B in alcohol dependence. Hum Genet 2013; 132:1165-76. [PMID: 23757001 PMCID: PMC3775919 DOI: 10.1007/s00439-013-1319-y] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Accepted: 05/26/2013] [Indexed: 12/12/2022]
Abstract
On the basis of the converging evidence showing regulation of drinking behavior by 5-HT3AB receptors and the serotonin transporter, we hypothesized that the interactive effects of genetic variations in the genes HTR3A, HTR3B, and SLC6A4 confer greater susceptibility to alcohol dependence (AD) than do their effects individually. We examined the associations of AD with 22 SNPs across HTR3A, HTR3B, and two functional variants in SLC6A4 in 500 AD and 280 healthy control individuals of European descent. We found that the alleles of the low-frequency SNPs rs33940208:T in HTR3A and rs2276305:A in HTR3B were inversely and nominally significantly associated with AD with odds ratio (OR) and 95 % confidence interval of 0.212 and 0.073, 0.616 (P = 0.004) and 0.261 and 0.088, 0.777 (P = 0.016), respectively. Further, our gene-by-gene interaction analysis revealed that two four-variant models that differed by only one SNP carried a risk for AD (empirical P < 1 × 10(-6) for prediction accuracy of the two models based on 10(6) permutations). Subsequent analysis of these two interaction models revealed an OR of 2.71 and 2.80, respectively, for AD (P < 0.001) in carriers of genotype combinations 5'-HTTLPR:LL/LS(SLC6A4)-rs1042173:TT/TG(SLC6A4)-rs1176744:AC(HTR3B)-rs3782025:AG(HTR3B) and 5'-HTTLPR:LL/LS(SLC6A4)-rs10160548:GT/TT(HTR3A)-rs1176744:AC(HTR3B)-rs3782025:AG(HTR3B). Combining all five genotypes resulted in an OR of 3.095 (P = 2.0 × 10(-4)) for AD. Inspired by these findings, we conducted the analysis in an independent sample, OZ-ALC-GWAS (N = 6699), obtained from the NIH dbGAP database, which confirmed the findings, not only for all three risk genotype combinations (Z = 4.384, P = 1.0 × 10(-5); Z = 3.155, P = 1.6 × 10(-3); and Z = 3.389, P = 7.0 × 10(-4), respectively), but also protective effects for rs33940208:T (χ (2) = 3.316, P = 0.0686) and rs2276305:A (χ (2) = 7.224, P = 0.007). These findings reveal significant interactive effects among variants in SLC6A4-HTR3A-HTR3B affecting AD. Further studies are needed to confirm these findings and characterize the molecular mechanisms underlying these effects.
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Affiliation(s)
- Chamindi Seneviratne
- Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Charlottesville, VA 22911, USA
| | - Jason Franklin
- Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Charlottesville, VA 22911, USA
| | - Katherine Beckett
- Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Charlottesville, VA 22911, USA:
| | - Jennie Z. Ma
- Department of Public Health Sciences, University of Virginia, Charlottesville, VA, USA
| | - Nassima Ait-Daoud
- Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Charlottesville, VA 22911, USA
| | - Thomas J. Payne
- ACT Center for Tobacco Treatment, Education and Research, Department of Otolaryngology, University of Mississippi Medical Center, Jackson, USA
| | - Bankole A. Johnson
- Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Charlottesville, VA 22911, USA
| | - Ming D. Li
- Department of Psychiatry and Neurobehavioral Sciences, University of Virginia, 1670 Discovery Drive, Charlottesville, VA 22911, USA
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Lehmann AS, Renbarger JL, McCormick CL, Topletz AR, Rouse C, Haas DM. Pharmacogenetic predictors of nausea and vomiting of pregnancy severity and response to antiemetic therapy: a pilot study. BMC Pregnancy Childbirth 2013; 13:132. [PMID: 23786674 PMCID: PMC3693967 DOI: 10.1186/1471-2393-13-132] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Accepted: 06/17/2013] [Indexed: 11/16/2022] Open
Abstract
Background Nausea and vomiting of pregnancy (NVP) is a common condition. The objective of this study was to evaluate the association between response to antiemetics in the treatment of NVP and genetic polymorphisms in the serotonin receptor subunit genes HTR3A and HTR3B. Methods Pregnant women ≥18 years of age with NVP starting antiemetic therapy with promethazine, prochlorperazine, metoclopramide, or ondansetron at ≤ 16 weeks gestational age were eligible. The study recruited 29 women with complete data and sampling who returned for their one week follow-up and were genotyped for HTR3A and HTR3B polymorphisms. Severity of NVP was captured (using Pregnancy Unique Quantification of Emesis (PUQE) and Quality of Life (QOL) tools) upon enrollment and after one week of antiemetic therapy. These measures were correlated with pharmacogenetic variability. Results Subjects with genotype associated with high serotonin affinity of the 5-HT3B receptor (rs1176744, CC) required more antiemetic medications (p < 0.001) than other subjects. Those with genotypes associated with increased expression of the 5-HT3A receptor subunit (rs1062613, CT or TT) had worse final PUQE scores (p = 0.01) than other subjects while rs3782025 variants carriers had significantly better initial (p = 0.02) and final (p = 0.02) PUQE scores than other subjects. Conclusions HTR3B and HTR3A gene variants may contribute to variability in response to antiemetic therapy for NVP.
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Kang SG, Lee HJ, Yoon HK, Cho SN, Park YM, Kim L. There is no evidence for an association between the serotonin receptor 3A gene C178T polymorphism and tardive dyskinesia in Korean schizophrenia patients. Nord J Psychiatry 2013; 67:214-8. [PMID: 23126479 DOI: 10.3109/08039488.2012.732114] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Tardive dyskinesia (TD) is a potential adverse effect of long-term treatment with antipsychotics. Previous studies have suggested a link between brain serotonergic systems and TD vulnerability. A recent report described that a serotonin 3 receptor (5-HTR3) agonist induced rhythmic movements in mice with complete paraplegia. Furthermore, it has been reported that the 5-HTR3 antagonist ondansetron is efficacious in the treatment of Gilles de la Tourette syndrome (GTS). AIM The aim of the present study was to determine whether the 5-HTR3A gene C178T polymorphism is associated with antipsychotic-induced TD in Korean schizophrenia patients. METHODS We investigated 280 Korean schizophrenia patients. Subjects with TD (n = 105) and without TD (n = 175) were matched for antipsychotic drug exposure and other relevant variables. RESULTS The distributions of genotypic (chi-squared = 3.55, p = 0.169) and allelic (chi-squared = 0.40, p = 0.528) frequencies did not differ between patients with and without TD. The total score on the Abnormal Involuntary Movement Scale also did not differ between the two genotype groups (F = 0.94, p = 0.391). CONCLUSIONS The findings of the present study do not support the involvement of the 5-HTR3A gene C178T polymorphism in TD in Korean schizophrenia subjects.
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Affiliation(s)
- Seung-Gul Kang
- Department of Psychiatry, Gachon University, School of Medicine, Incheon, Korea
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Differences in 5-hydroxytryptamine-3B haplotype frequencies between Asians and Caucasians. Int J Biol Markers 2012; 27:34-8. [PMID: 22139646 DOI: 10.5301/jbm.2011.8830] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2011] [Indexed: 11/20/2022]
Abstract
BACKGROUND The 5-hydroxytryptamine (5-HT3) receptor is a ligand-operated ion channel with five different receptor subunits (5-HT3A, B, C, D, and E) found in humans. Activation of 5-HT3 receptors influences various effects such as drug-induced emesis and causes behavioral problems such as anxiety, depression and cognitive disorders. To explore interethnic differences in the response to 5-HT3 antagonists, we studied haplotype frequencies in the gene encoding the 5-HT3B receptor in Asians and Caucasians. METHODS Three single nucleotide polymorphisms (SNPs) of the 5-HT3B receptor gene, i.e., deletion AAG at the 5'-UTR position, 18792A>G at the intron position, and 46698G>A at the 3' near gene position, were selected and genotyped in 165 Indonesian cancer patients and 188 Caucasian healthy volunteers. Haplotypes were set with gPlink, whereas the differences in haplotype frequencies between Indonesians and Caucasians were compared using multivariate analysis. RESULTS The haplotype profiles based on the deletion AAG, 18792A>G and 46698G>A were AAGAA, AAGAG, AAGGG, and deletion AG in both Indonesians and Caucasians. The frequency of the AAGAG haplotype was 54.8% in Indonesians and 39.9% in Caucasians (p<0.05). The frequency of the AAGGG haplotype was 14.3% in Indonesians and 29.3% in Caucasians. Moreover, there were significant differences in the frequencies of haplotype pairs between Indonesians and Caucasians (p<0.001). CONCLUSION Indonesian cancer patients had significantly different AAGAG and AAGGG haplotype frequencies of the gene encoding the 5-HT3B receptor compared to healthy Caucasians. This finding could be useful for understanding interethnic differences in the response to drugs targeting the 5-HT3B receptor in cancer-treatment-related emesis.
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Baptista-Hon DT, Deeb TZ, Othman NA, Sharp D, Hales TG. The 5-HT3B subunit affects high-potency inhibition of 5-HT3 receptors by morphine. Br J Pharmacol 2012; 165:693-704. [PMID: 21740409 DOI: 10.1111/j.1476-5381.2011.01582.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Morphine is an antagonist at 5-HT(3) A receptors. 5-HT(3) and opioid receptors are expressed in many of the same neuronal pathways where they modulate gut motility, pain and reinforcement. There is increasing interest in the 5-HT3B subunit, which confers altered pharmacology to 5-HT(3) receptors. We investigated the mechanisms of inhibition by morphine of 5-HT(3) receptors and the influence of the 5-HT3B subunit. EXPERIMENTAL APPROACH 5-HT-evoked currents were recorded from voltage-clamped HEK293 cells expressing human 5-HT3A subunits alone or in combination with 5-HT3B subunits. The affinity of morphine for the orthosteric site of 5-HT(3) A or 5-HT(3) AB receptors was assessed using radioligand binding with the antagonist [(3) H]GR65630. KEY RESULTS When pre-applied, morphine potently inhibited 5-HT-evoked currents mediated by 5-HT(3) A receptors. The 5-HT3B subunit reduced the potency of morphine fourfold and increased the rates of inhibition and recovery. Inhibition by pre-applied morphine was insurmountable by 5-HT, was voltage-independent and occurred through a site outside the second membrane-spanning domain. When applied simultaneously with 5-HT, morphine caused a lower potency, surmountable inhibition of 5-HT(3) A and 5-HT(3) AB receptors. Morphine also fully displaced [(3) H]GR65630 from 5-HT(3) A and 5-HT(3) AB receptors with similar potency. CONCLUSIONS AND IMPLICATIONS These findings suggest that morphine has two sites of action, a low-affinity, competitive site and a high-affinity, non-competitive site that is not available when the channel is activated. The affinity of morphine for the latter is reduced by the 5-HT3B subunit. Our results reveal that morphine causes a high-affinity, insurmountable and subunit-dependent inhibition of human 5-HT(3) receptors.
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Affiliation(s)
- Daniel T Baptista-Hon
- The Institute of Academic Anaesthesia, Centre for Neuroscience, University of Dundee, Dundee, UK
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19
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Replication of functional serotonin receptor type 3A and B variants in bipolar affective disorder: a European multicenter study. Transl Psychiatry 2012; 2:e103. [PMID: 22832903 PMCID: PMC3337070 DOI: 10.1038/tp.2012.30] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Serotonin type 3 receptors (5-HT(3)) are involved in learning, cognition and emotion, and have been implicated in various psychiatric phenotypes. However, their contribution to the pathomechanism of these disorders remains elusive. Three single nucleotide polymorphisms (SNPs) in the HTR3A and HTR3B genes (rs1062613, rs1176744 and rs3831455) have been associated with bipolar affective disorder (BPAD) in pilot studies, and all of them are of functional relevance. We performed a European multicenter study to confirm previous results and provide further evidence for the relevance of these SNPs to the etiology of neuropsychiatric disorders. This involved analysis of the distribution of the three SNPs among 1804 BPAD cases and 2407 healthy controls. A meta-analysis revealed a pooled odds ratio of 0.881 (P = 0.009, 95% confidence intervals = 0.802-0.968) for the non-synonymous functional SNP HTR3B p.Y129S (rs1176744), thereby confirming previous findings. In line with this, the three genome-wide association study samples BOMA (Bonn-Mannheim)-BPAD, WTCCC (Wellcome Trust Case Control Consortium)-BPAD and GAIN (Genetic Association Information Network)-BPAD, including >3500 patients and 5200 controls in total, showed an overrepresentation of the p.Y129 in patients. Remarkably, the meta-analysis revealed a P-value of 0.048 (OR = 0.934, fixed effect model). We also performed expression analyses to gain further insights into the distribution of HTR3A and HTR3B mRNA in the human brain. HTR3A and HTR3B were detected in all investigated brain tissues with the exception of the cerebellum, and large differences in the A:B subunit ratio were observed. Interestingly, expression of the B subunit was most prominent in the brain stem, amygdalae and frontal cortex, regions of relevance to psychiatric disorders. In conclusion, the present study provides further evidence for the presence of impaired 5-HT(3) receptor function in BPAD.
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Niesler B. 5-HT(3) receptors: potential of individual isoforms for personalised therapy. Curr Opin Pharmacol 2011; 11:81-6. [PMID: 21345729 DOI: 10.1016/j.coph.2011.01.011] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2010] [Revised: 01/29/2011] [Accepted: 01/31/2011] [Indexed: 01/28/2023]
Abstract
Serotonin type 3 (5-HT(3)) receptors are ligand-gated ion channels built by five subunits of diverse composition. In humans, five subunits exist (5-HT3A-E) which are encoded by the genes HTR3A-E and are expressed in various isoforms. Recently, the importance of factors influencing receptor expression became clear, such as chaperones and microRNAs. Owing to their expression profile and physiological functions, 5-HT(3) receptors have been implicated in irritable bowel syndrome (IBS) and psychiatric disorders. Interestingly, HTR3 variants have now been shown to be associated with these conditions. This underlines the potential of 5-HT(3) receptors as therapeutic targets and may enable personalised therapies in the future.
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Affiliation(s)
- Beate Niesler
- Institute of Human Genetics, Department of Human Molecular Genetics, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany.
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21
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Crisafulli C, Fabbri C, Porcelli S, Drago A, Spina E, De Ronchi D, Serretti A. Pharmacogenetics of antidepressants. Front Pharmacol 2011; 2:6. [PMID: 21687501 PMCID: PMC3108562 DOI: 10.3389/fphar.2011.00006] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Accepted: 02/04/2011] [Indexed: 12/28/2022] Open
Abstract
Up to 60% of depressed patients do not respond completely to antidepressants (ADs) and up to 30% do not respond at all. Genetic factors contribute for about 50% of the AD response. During the recent years the possible influence of a set of candidate genes as genetic predictors of AD response efficacy was investigated by us and others. They include the cytochrome P450 superfamily, the P-glycoprotein (ABCB1), the tryptophan hydroxylase, the catechol-O-methyltransferase, the monoamine oxidase A, the serotonin transporter (5-HTTLPR), the norepinephrine transporter, the dopamine transporter, variants in the 5-hydroxytryptamine receptors (5-HT1A, 5-HT2A, 5-HT3A, 5-HT3B, and 5-HT6), adrenoreceptor beta-1 and alpha-2, the dopamine receptors (D2), the G protein beta 3 subunit, the corticotropin releasing hormone receptors (CRHR1 and CRHR2), the glucocorticoid receptors, the c-AMP response-element binding, and the brain-derived neurotrophic factor. Marginal associations were reported for angiotensin I converting enzyme, circadian locomotor output cycles kaput protein, glutamatergic system, nitric oxide synthase, and interleukin 1-beta gene. In conclusion, gene variants seem to influence human behavior, liability to disorders and treatment response. Nonetheless, gene × environment interactions have been hypothesized to modulate several of these effects.
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Souza RP, De Luca V, Manchia M, Kennedy JL. Are serotonin 3A and 3B receptor genes associated with suicidal behavior in schizophrenia subjects? Neurosci Lett 2010; 489:137-41. [PMID: 21184810 DOI: 10.1016/j.neulet.2010.11.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2010] [Revised: 05/13/2010] [Accepted: 11/30/2010] [Indexed: 01/16/2023]
Abstract
Suicide is a major contributor to the morbidity and mortality of schizophrenia, accounting for approximately 10% of deaths in these patients. Genetic factors have been reported to modulate the risk for suicide, although the precise mechanism and magnitude of the genetic contribution are unknown. Further, suicide attempters present abnormalities in the serotonergic system. We evaluated whether genetic variants in the serotonin receptors HTR3A (rs897692, rs1150226, rs1176724, rs2276302, rs3737457, rs897687 and rs1176713) and HTR3B (rs3758987, rs10502180, rs11606194, rs17116121, rs1176744, rs17116138, rs2276307, rs3782025 and rs1176761) were susceptibility components for suicidal behavior in 154 Caucasians schizophrenia subjects (20.1% of suicide attempters). In a second step, we compared haplotype and gene-gene interaction approaches because both genes are located in the chromosome 11q23 approximately 28Kbp apart. We did not observe allelic or genotypic associations. Six haplotypes were nominally significant associated with suicide. Gene-gene interaction using Helix Tree software showed two nominally significant interactions reproduced by haplotype association. Likewise, haplotypes composed by the markers included in the best multidimensional reduction three-locus model were nominally significant. Our results suggest that HTR3A and HTR3B polymorphisms may not play a major role in the susceptibility for suicidal behavior in schizophrenia subjects. Moreover, gene-gene interaction and haplotype association may have consistent results for genes located in the same chromosome.
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Affiliation(s)
- Renan P Souza
- Neurogenetics Section, Neuroscience Department, Centre for Addiction and Mental Health, Toronto, ON, Canada
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23
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Yang H, Liu J, Sui J, Pearlson G, Calhoun VD. A Hybrid Machine Learning Method for Fusing fMRI and Genetic Data: Combining both Improves Classification of Schizophrenia. Front Hum Neurosci 2010; 4:192. [PMID: 21119772 PMCID: PMC2990459 DOI: 10.3389/fnhum.2010.00192] [Citation(s) in RCA: 124] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2010] [Accepted: 09/24/2010] [Indexed: 11/25/2022] Open
Abstract
We demonstrate a hybrid machine learning method to classify schizophrenia patients and healthy controls, using functional magnetic resonance imaging (fMRI) and single nucleotide polymorphism (SNP) data. The method consists of four stages: (1) SNPs with the most discriminating information between the healthy controls and schizophrenia patients are selected to construct a support vector machine ensemble (SNP-SVME). (2) Voxels in the fMRI map contributing to classification are selected to build another SVME (Voxel-SVME). (3) Components of fMRI activation obtained with independent component analysis (ICA) are used to construct a single SVM classifier (ICA-SVMC). (4) The above three models are combined into a single module using a majority voting approach to make a final decision (Combined SNP-fMRI). The method was evaluated by a fully validated leave-one-out method using 40 subjects (20 patients and 20 controls). The classification accuracy was: 0.74 for SNP-SVME, 0.82 for Voxel-SVME, 0.83 for ICA-SVMC, and 0.87 for Combined SNP-fMRI. Experimental results show that better classification accuracy was achieved by combining genetic and fMRI data than using either alone, indicating that genetic and brain function representing different, but partially complementary aspects, of schizophrenia etiopathology. This study suggests an effective way to reassess biological classification of individuals with schizophrenia, which is also potentially useful for identifying diagnostically important markers for the disorder.
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Affiliation(s)
- Honghui Yang
- Department of Environment Engineering, Northwestern Polytechnical University Xi'an, China
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24
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Walstab J, Rappold G, Niesler B. 5-HT(3) receptors: role in disease and target of drugs. Pharmacol Ther 2010; 128:146-69. [PMID: 20621123 DOI: 10.1016/j.pharmthera.2010.07.001] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2010] [Accepted: 06/21/2010] [Indexed: 12/19/2022]
Abstract
Serotonin type 3 (5-HT(3)) receptors are pentameric ion channels belonging to the superfamily of Cys-loop receptors. Receptor activation either leads to fast excitatory responses or modulation of neurotransmitter release depending on their neuronal localisation. 5-HT(3) receptors are known to be expressed in the central nervous system in regions involved in the vomiting reflex, processing of pain, the reward system, cognition and anxiety control. In the periphery they are present on a variety of neurons and immune cells. 5-HT(3) receptors are known to be involved in emesis, pain disorders, drug addiction, psychiatric and GI disorders. Progress in molecular genetics gives direction to personalised medical strategies for treating complex diseases such as psychiatric and functional GI disorders and unravelling individual drug responses in pharmacogenetic approaches. Here we discuss the molecular basis of 5-HT(3) receptor diversity at the DNA and protein level, of which our knowledge has greatly extended in the last decade. We also evaluate their role in health and disease and describe specific case-control studies addressing the involvement of polymorphisms of 5-HT3 subunit genes in complex disorders and responses to drugs. Furthermore, we focus on the actual state of the pharmacological knowledge concerning not only classical 5-HT(3) antagonists--the setrons--but also compounds of various substance classes targeting 5-HT(3) receptors such as anaesthetics, opioids, cannabinoids, steroids, antidepressants and antipsychotics as well as natural compounds derived from plants. This shall point to alternative treatment options modulating the 5-HT(3) receptor system and open new possibilities for drug development in the future.
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Affiliation(s)
- Jutta Walstab
- Department of Human Molecular Genetics, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
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25
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Hammer C, Fasching PA, Loehberg CR, Rauh C, Ekici AB, Jud SM, Bani MR, Beckmann MW, Strick R, Niesler B. Polymorphism in HTR3D shows different risks for acute chemotherapy-induced vomiting after anthracycline chemotherapy. Pharmacogenomics 2010; 11:943-50. [DOI: 10.2217/pgs.10.67] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Aims: Serotonin (5-hydroxytryptamine 3; 5-HT3) receptors are involved in chemotherapy-induced nausea and vomiting (CINV), and 5-HT3 antagonists are part of the ‘gold standard’ antiemetic treatment during chemotherapy. We investigated the correlation of common variants in 5-HT3 receptor subunit genes with the occurrence of CINV. Materials & methods: A total of 110 previously characterized chemotherapy-naive women with primary breast cancer treated with anthracycline-containing chemotherapy served as a study group for mutational analysis by direct sequencing. Eight common SNPs in the 5-HT3 receptor genes, HTR3A, HTR3B, HTR3D and HTR3E, were selected for association analysis. Results: A nonsynonymous variant in HTR3D, p.G36A (rs6443930), was found to be over-represented in nonresponders, assuming a log-additive inheritance model (p = 0.048). Cox proportional regression analysis resulted in a hazards ratio of 0.36 for homozygous carriers of the C allele to vomit within 24 h after first chemotherapy administration (p = 0.049). Conclusion: Our data supports the hypothesis that 5-HT3 receptors play an important role in the pathogenesis of CINV. Along with previously identified HTR3 polymorphisms, the HTR3D p.G36A variant could also contribute to facilitating individual risk predictions.
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Affiliation(s)
- Christian Hammer
- Institute of Human Genetics, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Peter A Fasching
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Christian R Loehberg
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Claudia Rauh
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Arif B Ekici
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Sebastian M Jud
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Mayada R Bani
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Matthias W Beckmann
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
| | - Reiner Strick
- University Breast Center Franconia, Erlangen University Hospital, Universitaetsstr. 21–23, 91054 Erlangen, Germany
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26
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Rajkumar R, Mahesh R. The auspicious role of the 5-HT3 receptor in depression: a probable neuronal target? J Psychopharmacol 2010; 24:455-69. [PMID: 20123937 DOI: 10.1177/0269881109348161] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The serotonergic mechanisms have been successfully utilized by the majority of antidepressant drug discovery programmes, while the search for newer targets remains persistent. The present review focused on the serotonin type-3 receptor, the only ion channel subtype in the serotonin family. Behavioural, neurochemical, electrophysiological and molecular analyses, including the results from our laboratory, provided substantial evidence that rationalizes the correlation between serotonin type-3 receptor modulation and rodent depressive-like behaviour. Nevertheless, the reports on polymorphism of serotonin type-3 receptor genes and data from clinical studies (on serotonin type-3 receptor antagonists) were insufficient to corroborate the involvement of this receptor in the neurobiology of depression. The preclinical and clinical studies that have contradicted the antidepressant-like effects of serotonin type-3 receptor antagonists and the reasons underlying such disagreement were discussed. Finally, this critical review commended the serotonin type-3 receptor as a candidate neuronal antidepressant drug target.
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Functional variants of the serotonin receptor type 3A and B gene are associated with eating disorders. Pharmacogenet Genomics 2009; 19:790-9. [PMID: 19741568 DOI: 10.1097/fpc.0b013e32833132b3] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
OBJECTIVE As a key player in modulating both human physiological and behavioural functions including anxiety, perception and in particular appetite, serotonin (5-hydroxytryptamine, 5-HT) is likely to be involved in the aetiology of eating disorders. Studies showing serotonin receptor type 3 (5-HT3) receptors to mediate food intake depression (anorexic response) have triggered our interest in investigating the putative role of variants in the 5-HT3 receptor genes, HTR3A and HTR3B, in the susceptibility to anorexia nervosa (AN) and bulimia nervosa (BN). METHODS Two hundred and sixty-five patients with AN and 91 patients with BN as well as 191 healthy controls served as a pilot study group for mutational analysis by direct sequencing. Variants showing a significant association were subsequently genotyped in an independent Spanish cohort of 78 patients with AN and 119 patients with BN as well as 331 healthy controls for replication purposes. RESULTS In the pilot study, we found the coding HTR3B variant, p.Y129S, (rs1176744, P = 0.004, odds ratio = 2.06) to be associated with the restrictive subtype of AN. The association was confirmed in the Spanish study group (P = 0.034, odds ratio = 2.26). CONCLUSION Our study provides first evidence for an involvement of 5-HT3 variants in the aetiopathology of eating disorders in humans.
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28
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Jiang B, Kenna HA, Rasgon NL. Genetic overlap between polycystic ovary syndrome and bipolar disorder: The endophenotype hypothesis. Med Hypotheses 2009; 73:996-1004. [DOI: 10.1016/j.mehy.2008.12.056] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2008] [Revised: 12/03/2008] [Accepted: 12/07/2008] [Indexed: 12/13/2022]
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Thomas KLH, Ellingrod VL. Pharmacogenetics of selective serotonin reuptake inhibitors and associated adverse drug reactions. Pharmacotherapy 2009; 29:822-31. [PMID: 19558256 DOI: 10.1592/phco.29.7.822] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The selective serotonin reuptake inhibitors (SSRIs) have become one of the most widely prescribed classes of drugs. They are relatively safe for the pharmacologic treatment of various psychiatric disorders; however, certain patients cannot tolerate some adverse drug reactions associated with this drug class. In addition, clinicians currently have no way to predict who will respond appropriately to a given SSRI, and the paradigm of trial and error is especially distressing for patients with mental illness. Pharmacogenetic association studies may provide insight into which genetic polymorphisms might be clinically relevant for individualizing pharmacotherapeutic regimens. Thus, we reviewed and summarized the literature regarding the pharmacogenomics of SSRI-associated adverse drug reactions. This growing body of knowledge may inform subsequent design of pharmacogenetic studies with respect to adverse drug reactions. As we appreciate the many pharmacologic mechanisms related to adverse drug reactions and gain polymorphic functional data, we will have opportunities to refine hypotheses for future pharmacogenetic association analyses.
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Affiliation(s)
- Kelan L H Thomas
- Clinical Pharmacogenomics Laboratory, College of Pharmacy, University of Michigan, Ann Arbor, Michigan 48109-1065, USA
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30
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Yosifova A, Mushiroda T, Stoianov D, Vazharova R, Dimova I, Karachanak S, Zaharieva I, Milanova V, Madjirova N, Gerdjikov I, Tolev T, Velkova S, Kirov G, Owen MJ, O'Donovan MC, Toncheva D, Nakamura Y. Case-control association study of 65 candidate genes revealed a possible association of a SNP of HTR5A to be a factor susceptible to bipolar disease in Bulgarian population. J Affect Disord 2009; 117:87-97. [PMID: 19328558 DOI: 10.1016/j.jad.2008.12.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2008] [Revised: 12/24/2008] [Accepted: 12/24/2008] [Indexed: 11/15/2022]
Abstract
BACKGROUND Bipolar affective disorder (BAD) is a psychiatric illness characterized by episodes of mania and depression. Although the etiology is not clear, epidemiological studies suggest it is a result of an interaction of genetic and environmental factors. Despite of enormous efforts and abundant studies conducted, none has yet been identified definitively a gene susceptible to bipolar disorder. METHODS Ninety-four Bulgarian patients diagnosed with bipolar disorder and 184 Bulgarian healthy individuals, were used for genotyping of 191 single nucleotide polymorphisms (SNPs) by TaqMan and/or Invader assays. Seventeen SNPs that revealed P value less than 0.05 in the first screening were genotyped using an additional independent set of samples, consisting of 78 BAD cases and 372 controls. RESULTS After applying the Bonferonni correction on genotyping results of 172 cases and 556 controls, only one SNP, rs1800883, in the HTR5A gene revealed a significant level of P value (P=0.000097; odds ratio=1.80 (95%CI, 1.27-2.54); corrected P=0.017). CONCLUSIONS Our findings suggest that HTR5A gene could play an important role in the pathogenesis of bipolar disorder in our population. However these findings should be viewed with caution and replication studies in other populations are necessary in support of these findings.
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Affiliation(s)
- Adelina Yosifova
- Laboratory for International Alliance, RIKEN Center for Genomic Medicine, Tsurumi-ku, Yokohama, Japan
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Ducci F, Enoch MA, Yuan Q, Shen PH, White KV, Hodgkinson C, Albaugh B, Virkkunen M, Goldman D. HTR3B is associated with alcoholism with antisocial behavior and alpha EEG power--an intermediate phenotype for alcoholism and co-morbid behaviors. Alcohol 2009; 43:73-84. [PMID: 19185213 DOI: 10.1016/j.alcohol.2008.09.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2008] [Revised: 08/08/2008] [Accepted: 09/18/2008] [Indexed: 10/25/2022]
Abstract
Alcohol use disorders (AUD) with co-morbid antisocial personality disorder (ASPD) have been associated with serotonin (5-HT) dysfunction. 5-HT3 receptors are potentiated by ethanol and appear to modulate reward. 5-HT3 receptor antagonists may be useful in the treatment of early-onset alcoholics with co-morbid ASPD. Low-voltage alpha electroencephalogram (EEG) power, a highly heritable trait, has been associated with both AUD and ASPD. A recent whole genome linkage scan in one of our samples, Plains American Indians (PI), has shown a suggestive linkage peak for alpha power at the 5-HT3R locus. We tested whether genetic variation within the HTR3A and HTR3B genes influences vulnerability to AUD with comorbid ASPD (AUD+ASPD) and moderates alpha power. Our study included three samples: 284 criminal alcoholic Finnish Caucasians and 234 controls; two independent community-ascertained samples with resting EEG recordings: a predominantly Caucasian sample of 191 individuals (Bethesda) and 306 PI. In the Finns, an intronic HTR3B SNP rs3782025 was associated with AUD+ASPD (P=.004). In the Bethesda sample, the same allele predicted lower alpha power (P=7.37e(-5)). Associations between alpha power and two other HTR3B SNPs were also observed among PI (P=.03). One haplotype in the haplotype block at the 3' region of the gene that included rs3782025 was associated with AUD+ASPD in the Finns (P=.02) and with reduced alpha power in the Bethesda population (P=.00009). Another haplotype in this block was associated with alpha power among PI (P=.03). No associations were found for HTR3A. Genetic variation within HTR3B may influence vulnerability to develop AUD with comorbid ASPD. 5-HT3R might contribute to the imbalance between excitation and inhibition that characterize the brain of alcoholics.
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3B but which 3B and that's just one of the questions: the heterogeneity of human 5-HT3 receptors. Trends Pharmacol Sci 2009; 29:437-44. [PMID: 18597859 DOI: 10.1016/j.tips.2008.06.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2008] [Revised: 04/14/2008] [Accepted: 06/15/2008] [Indexed: 01/19/2023]
Abstract
The 5-hydroxytryptamine 3 (5-HT3) receptor is expressed widely in the central and peripheral nervous systems, where it mediates or modulates a wide range of physiological processes. The receptor is targeted by drugs administered for nausea and/or emesis and irritable bowel syndrome and has been proposed as a potential drug target in various psychiatric disorders. The 5-HT3 receptor is a pentameric ligand-gated ion channel and belongs to the Cys-loop receptor family. In contrast to the immense heterogeneity characterizing other Cysloop receptors, native 5-HT3 receptors historically have been considered a much more homogenous receptor population. However, the recent discovery of additional 5-HT3 subunits and the dawning realization that central and peripheral 5-HT3 receptor populations might comprise several subtypes characterized by distinct functional properties has emphasized the complexity of human 5-HT3 receptor signaling. In this review potential implications of these findings and of the entirely new layer of interindividual diversity introduced to the 5-HT3 receptor system by genetic variations will be outlined.
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Barnes NM, Hales TG, Lummis SC, Peters JA. The 5-HT3 receptor--the relationship between structure and function. Neuropharmacology 2009; 56:273-84. [PMID: 18761359 PMCID: PMC6485434 DOI: 10.1016/j.neuropharm.2008.08.003] [Citation(s) in RCA: 174] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2008] [Revised: 07/31/2008] [Accepted: 08/01/2008] [Indexed: 12/15/2022]
Abstract
The 5-hydroxytryptamine type-3 (5-HT3) receptor is a cation-selective ion channel of the Cys-loop superfamily. 5-HT3 receptor activation in the central and peripheral nervous systems evokes neuronal excitation and neurotransmitter release. Here, we review the relationship between the structure and the function of the 5-HT3 receptor. 5-HT3A and 5-HT3B subunits are well established components of 5-HT3 receptors but additional HTR3C, HTR3D and HTR3E genes expand the potential for molecular diversity within the family. Studies upon the relationship between subunit structure and the ionic selectivity and single channel conductances of 5-HT3 receptors have identified a novel domain (the intracellular MA-stretch) that contributes to ion permeation and selectivity. Conventional and unnatural amino acid mutagenesis of the extracellular domain of the receptor has revealed residues, within the principle (A-C) and complementary (D-F) loops, which are crucial to ligand binding. An area requiring much further investigation is the subunit composition of 5-HT3 receptors that are endogenous to neurones, and their regional expression within the central nervous system. We conclude by describing recent studies that have identified numerous HTR3A and HTR3B gene polymorphisms that impact upon 5-HT3 receptor function, or expression, and consider their relevance to (patho)physiology.
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Affiliation(s)
- Nicholas M. Barnes
- Cellular and Molecular Neuropharmacology Research Group, Department of Pharmacology, Division of Neuroscience, The Medical School, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK
| | - Tim G. Hales
- Department of Pharmacology and Physiology, The George Washington University, Washington, DC 20037, USA
| | - Sarah C.R. Lummis
- Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1QW, UK
| | - John A. Peters
- Neurosciences Institute, Division of Pathology and Neuroscience, Ninewells Hospital and Medical School, The University of Dundee, Dundee DD1 9SY, UK
- Corresponding author. Tel.: +44 01382 660111x33117; fax: +44 01382 667120. E-mail address: (J.A. Peters)
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Chapter 12 Modulation of the Cys‐Loop Ligand‐Gated Ion Channels by Fatty Acid and Cannabinoids. VITAMINS AND HORMONES 2009; 81:315-35. [DOI: 10.1016/s0083-6729(09)81012-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Characterization of the effects of four HTR3B polymorphisms on human 5-HT3AB receptor expression and signalling. Pharmacogenet Genomics 2008; 18:1027-40. [DOI: 10.1097/fpc.0b013e328310f950] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Naturally occurring variants in the HTR3B gene significantly alter properties of human heteromeric 5-hydroxytryptamine-3A/B receptors. Pharmacogenet Genomics 2008; 18:793-802. [PMID: 18698232 DOI: 10.1097/fpc.0b013e3283050117] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES The 5-hydroxytryptamine-3 (5-HT3) receptor, a ligand-gated ion channel, is known to be involved in gut motility and peristalsis, the mediation of pain and psychiatric diseases. 5-HT3 receptor antagonists are effectively used to treat chemotherapy-induced emesis and irritable bowel syndrome. We have characterized the impact of four naturally occurring variants in the HTR3B gene leading to amino acid exchanges within the respective subunit of heteromeric 5-HT3A/B receptors on a functional and expressional level. METHODS AND RESULTS For functional characterization, a Ca influx assay based on aequorin bioluminescence was used. Radioligand-binding studies with the 5-HT3 receptor antagonist [H]GR65630 were carried out to determine expression levels of heteromeric 5-HT3A/B receptors. Transiently transfected human embryonic kidney 293 cells using 5-HT3A and 5-HT3B complementary DNA constructs were shown to coexpress homopentameric 5-HT3A next to heteromeric 5-HT3A/B receptors. The variant p.V183I decreased surface expression, whereas p.Y129S and p.S156R led to pronounced increases of 5-HT maximum responses, despite nearly unaltered surface expression levels of heteromeric 5-HT3A/B receptors. CONCLUSION These results may help to explain earlier reported association findings of the frequent p.Y129S and p.V183I variants with psychiatric diseases. Replication studies with larger sample pools, especially regarding the rare p.S156R variant would be useful, to obtain an idea about the predisposing role of these single nucleotide polymorphisms as susceptibility variants.
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Serretti A, Mandelli L. The genetics of bipolar disorder: genome 'hot regions,' genes, new potential candidates and future directions. Mol Psychiatry 2008; 13:742-71. [PMID: 18332878 DOI: 10.1038/mp.2008.29] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Bipolar disorder (BP) is a complex disorder caused by a number of liability genes interacting with the environment. In recent years, a large number of linkage and association studies have been conducted producing an extremely large number of findings often not replicated or partially replicated. Further, results from linkage and association studies are not always easily comparable. Unfortunately, at present a comprehensive coverage of available evidence is still lacking. In the present paper, we summarized results obtained from both linkage and association studies in BP. Further, we indicated new potential interesting genes, located in genome 'hot regions' for BP and being expressed in the brain. We reviewed published studies on the subject till December 2007. We precisely localized regions where positive linkage has been found, by the NCBI Map viewer (http://www.ncbi.nlm.nih.gov/mapview/); further, we identified genes located in interesting areas and expressed in the brain, by the Entrez gene, Unigene databases (http://www.ncbi.nlm.nih.gov/entrez/) and Human Protein Reference Database (http://www.hprd.org); these genes could be of interest in future investigations. The review of association studies gave interesting results, as a number of genes seem to be definitively involved in BP, such as SLC6A4, TPH2, DRD4, SLC6A3, DAOA, DTNBP1, NRG1, DISC1 and BDNF. A number of promising genes, which received independent confirmations, and genes that have to be further investigated in BP, have been also systematically listed. In conclusion, the combination of linkage and association approaches provided a number of liability genes. Nevertheless, other approaches are required to disentangle conflicting findings, such as gene interaction analyses, interaction with psychosocial and environmental factors and, finally, endophenotype investigations.
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Affiliation(s)
- A Serretti
- Institute of Psychiatry, University of Bologna, Bologna, Italy.
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Functional characterization of a -100_-102delAAG deletion-insertion polymorphism in the promoter region of the HTR3B gene. Pharmacogenet Genomics 2008; 18:219-30. [PMID: 18300944 DOI: 10.1097/fpc.0b013e3282f51092] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The HTR3B gene encodes the B-subunit of the type 3 serotonin receptor (5-HT3). A -100_-102delAAG deletion in the promoter region has been associated with poor response to antiemetic medication and susceptibility to bipolar affective disorders. The molecular mechanisms underlying these associations, however, remained unclear. METHODS We performed electrophoretic mobility shift and luciferase reporter gene assays to elucidate the effect of this polymorphism on the HTR3B promoter activity in PC-12 and HEK293 cells. The reporter constructs carried a 2171 bp fragment of the native HTR3B promoter or 30 bp of the polymorphic locus in tandem triplication upstream of the thymidine kinase minimal promoter. RESULTS Deletion mapping indicated that the sequence around the -100_-102delAAG polymorphism had significant promoter activity. Electrophoretic mobility shift assays indicated differential binding of nuclear proteins to the polymorphic DNA region with stronger binding to the insertion than to the deletion allele. The activity of the native promoter carrying the deletion allele was 25% higher in PC-12 (P=0.016) and 40% higher in HEK cells (P=0.016) compared with the respective insertion construct. Constructs carrying the deletion allele in tandem triplicates showed 43% (PC-12 cells, P=0.002) and 28% (HEK293 cells, P=0.015) higher activity than those carrying the insertion allele. The polymorphism was not linked with known amino acid substitutions in HTR3A and HTR3B. CONCLUSIONS The -100_-102delAAG 3 bp deletion increases the HTR3B promoter activity in vitro. The consequences of this for the structure and the function of the resulting 5-HT3 receptors remain to be elucidated.
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Niesler B, Kapeller J, Hammer C, Rappold G. Serotonin type 3 receptor genes: HTR3A, B, C, D, E. Pharmacogenomics 2008; 9:501-4. [DOI: 10.2217/14622416.9.5.501] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
The 5-HT3 receptor is a ligand-gated ion channel composed of five subunits. To date, five different human subunits are known, 5-HT3A–E, which are encoded by the serotonin receptor genes HTR3A, HTR3B, HTR3C, HTR3D and HTR3E, respectively. Functional receptors are pentameric complexes of diverse composition. Different receptor subtypes seem to be involved in chemotherapy-induced nausea and vomiting (CINV), irritable bowel syndrome and psychiatric disorders. 5-HT3 receptor antagonists are established in the therapy of CINV and irritable bowel syndrome. HTR3A and HTR3B polymorphisms may also contribute to the etiology of psychiatric disorders and serve as predictors in CINV and in the medical treatment of psychiatric patients.
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Affiliation(s)
- Beate Niesler
- Department of Human Molecular Genetics, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Johannes Kapeller
- Department of Human Molecular Genetics, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Christian Hammer
- Department of Human Molecular Genetics, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
| | - Gudrun Rappold
- Department of Human Molecular Genetics, University of Heidelberg, Im Neuenheimer Feld 366, 69120 Heidelberg, Germany
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Tanaka M, Kobayashi D, Murakami Y, Ozaki N, Suzuki T, Iwata N, Haraguchi K, Ieiri I, Kinukawa N, Hosoi M, Ohtani H, Sawada Y, Mine K. Genetic polymorphisms in the 5-hydroxytryptamine type 3B receptor gene and paroxetine-induced nausea. Int J Neuropsychopharmacol 2008; 11:261-7. [PMID: 17697394 DOI: 10.1017/s1461145707007985] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Selective serotonin reuptake inhibitor (SSRI)-induced nausea can be severe enough to lead to early treatment discontinuation. However, it is currently not possible to predict the occurrence of nausea before the initiation of SSRI treatment. In this study, we investigated the effect of genetic polymorphisms in the 5-hydroxytryptamine type 2A, 3A, and 3B (5-HT3B) receptors, 5-HT transporter, and CYP2D6 genes on the incidence of paroxetine-induced nausea. A consecutive series of 72 Japanese patients with depressive or anxiety disorders were treated with paroxetine. Paroxetine-induced nausea was assessed by a pharmacist and was observed in 29.2% of the patients. A significant (nominal p=0.00286) association was found between the incidence of nausea and the -100_-102AAG insertion/deletion polymorphism of the 5-HT3B receptor gene. No significant associations were observed between the other genetic polymorphisms and the incidence of nausea. The -100_-102AAG deletion variant of the 5-HT3B receptor gene may affect paroxetine-induced nausea.
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Affiliation(s)
- Misuzu Tanaka
- Department of Clinical Pharmacology, Faculty of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
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Single nucleotide polymorphisms (SNPs) in coding regions of canine dopamine- and serotonin-related genes. BMC Genet 2008; 9:10. [PMID: 18226236 PMCID: PMC2268707 DOI: 10.1186/1471-2156-9-10] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2007] [Accepted: 01/28/2008] [Indexed: 12/16/2022] Open
Abstract
Background Polymorphism in genes of regulating enzymes, transporters and receptors of the neurotransmitters of the central nervous system have been associated with altered behaviour, and single nucleotide polymorphisms (SNPs) represent the most frequent type of genetic variation. The serotonin and dopamine signalling systems have a central influence on different behavioural phenotypes, both of invertebrates and vertebrates, and this study was undertaken in order to explore genetic variation that may be associated with variation in behaviour. Results Single nucleotide polymorphisms in canine genes related to behaviour were identified by individually sequencing eight dogs (Canis familiaris) of different breeds. Eighteen genes from the dopamine and the serotonin systems were screened, revealing 34 SNPs distributed in 14 of the 18 selected genes. A total of 24,895 bp coding sequence was sequenced yielding an average frequency of one SNP per 732 bp (1/732). A total of 11 non-synonymous SNPs (nsSNPs), which may be involved in alteration of protein function, were detected. Of these 11 nsSNPs, six resulted in a substitution of amino acid residue with concomitant change in structural parameters. Conclusion We have identified a number of coding SNPs in behaviour-related genes, several of which change the amino acids of the proteins. Some of the canine SNPs exist in codons that are evolutionary conserved between five compared species, and predictions indicate that they may have a functional effect on the protein. The reported coding SNP frequency of the studied genes falls within the range of SNP frequencies reported earlier in the dog and other mammalian species. Novel SNPs are presented and the results show a significant genetic variation in expressed sequences in this group of genes. The results can contribute to an improved understanding of the genetics of behaviour.
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Abstract
In this review, all papers relevant to the molecular genetics of bipolar disorder published from 2004 to the present (mid 2006) are reviewed, and major results on depression are summarized. Several candidate genes for schizophrenia may also be associated with bipolar disorder: G72, DISC1, NRG1, RGS4, NCAM1, DAO, GRM3, GRM4, GRIN2B, MLC1, SYNGR1, and SLC12A6. Of these, association with G72 may be most robust. However, G72 haplotypes and polymorphisms associated with bipolar disorder are not consistent with each other. The positional candidate approach showed an association between bipolar disorder and TRPM2 (21q22.3), GPR50 (Xq28), Citron (12q24), CHMP1.5 (18p11.2), GCHI (14q22-24), MLC1 (22q13), GABRA5 (15q11-q13), BCR (22q11), CUX2, FLJ32356 (12q23-q24), and NAPG (18p11). Studies that focused on mood disorder comorbid with somatic symptoms, suggested roles for the mitochondrial DNA (mtDNA) 3644 mutation and the POLG mutation. From gene expression analysis, PDLIM5, somatostatin, and the mtDNA 3243 mutation were found to be related to bipolar disorder. Whereas most previous positive findings were not supported by subsequent studies, DRD1 and IMPA2 have been implicated in follow-up studies. Several candidate genes in the circadian rhythm pathway, BmaL1, TIMELESS, and PERIOD3, are reported to be associated with bipolar disorder. Linkage studies show many new linkage loci. In depression, the previously reported positive finding of a gene-environmental interaction between HTTLPR (insertion/deletion polymorphism in the promoter of a serotonin transporter) and stress was not replicated. Although the role of the TPH2 mutation in depression had drawn attention previously, this has not been replicated either. Pharmacogenetic studies show a relationship between antidepressant response and HTR2A or FKBP5. New technologies for comprehensive genomic analysis have already been applied. HTTLPR and BDNF promoter polymorphisms are now found to be more complex than previously thought, and previous papers on these polymorphisms should be treated with caution. Finally, this report addresses some possible causes for the lack of replication in this field.
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Affiliation(s)
- Tadafumi Kato
- Laboratory for Molecular Dynamics of Mental Disorders, RIKEN Brain Science Institute, Wako, Saitama, Japan.
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Krzywkowski K. Do polymorphisms in the human 5-HT3 genes contribute to pathological phenotypes? Biochem Soc Trans 2007; 34:872-6. [PMID: 17052218 DOI: 10.1042/bst0340872] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
5-HT3 receptors are members of the Cys-loop superfamily of ligand-gated ion channels. In both the central and the peripheral nervous systems, 5-HT3 receptors excite postsynaptic cells and modulate the release of neurotransmitters from presynaptic neurons. 5-HT3 receptors are known to be involved in mediation of nausea/emesis caused by chemo/radio-therapy and anaesthesia, and more recently have also been found to be involved in irritable bowel syndrome. 5-HT3 receptors have also been suggested to play a role in a range of other indications, including various psychiatric disorders. This review summarizes the current evidence for the contribution of 5-HT3 subunit genes to disease phenotypes arising from association studies. Furthermore, it suggests how in vitro characterization of naturally occurring genetic variants can be used to obtain a better understanding of the causal relationship between gene and disease.
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Affiliation(s)
- K Krzywkowski
- Department of Medicinal Chemistry, The Danish University of Pharmaceutical Sciences, Copenhagen, Denmark.
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Kato M, Fukuda T, Wakeno M, Fukuda K, Okugawa G, Ikenaga Y, Yamashita M, Takekita Y, Nobuhara K, Azuma J, Kinoshita T. Effects of the serotonin type 2A, 3A and 3B receptor and the serotonin transporter genes on paroxetine and fluvoxamine efficacy and adverse drug reactions in depressed Japanese patients. Neuropsychobiology 2006; 53:186-95. [PMID: 16874005 DOI: 10.1159/000094727] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2006] [Accepted: 04/21/2006] [Indexed: 01/16/2023]
Abstract
In this study, we tested the influence of the serotonin type 2A, 3A and 3B receptor genes (HTR2A, HTR3A, HTR3B) in addition to a polymorphism in the promoter region of the serotonin transporter (SERTPR), and investigated the different characteristics of clinical responses to paroxetine and fluvoxamine. A total of 100 Japanese patients affected by major recurrent depression were enrolled in a randomized 6-week study. The clinical response was evaluated using the Hamilton Rating Scale for Depression (HAM-D), and adverse drug reactions were assessed at each visit. Patients with the l allele of SERTPR showed a better response to SSRIs than s/s genotype carriers (p = 0.015-0.042), more significantly to fluvoxamine. The -1438G/G genotype of HTR2A was associated with a good response to SSRIs (p = 0.010-0.039), especially to fluvoxamine, and significantly with severe nausea in paroxetine-treated patients (p = 0.013). The 178C/C genotype of the HTR3A was associated with an antidepressant response (p = 0.022-0.042), and more significantly in paroxetine-treated patients (p = 0.002-0.042). These effects were independent of one another. We replicated the finding that the SERPTR polymorphism was associated with a response to SSRIs. We additionally found that HTR2A and HTR3A polymorphisms are associated with the efficacy, and the HTR2A polymorphism is also associated with adverse drug reactions. Furthermore, the effects of these polymorphisms varied from one SSRI to another and thus may depend on the characteristics of each SSRI.
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Affiliation(s)
- Masaki Kato
- Department of Neuropsychiatry, Kansai Medical University, Moriguchi, Japan.
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Tzvetkov MV, Meineke C, Oetjen E, Hirsch-Ernst K, Brockmöller J. Tissue-specific alternative promoters of the serotonin receptor gene HTR3B in human brain and intestine. Gene 2006; 386:52-62. [PMID: 17010535 DOI: 10.1016/j.gene.2006.08.002] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2006] [Revised: 08/02/2006] [Accepted: 08/05/2006] [Indexed: 11/28/2022]
Abstract
The serotonin receptor type 3 is a pentameric ligand-gated ion channel regulating intestinal motility, nausea, and vomiting in humans. The HTR3B gene codes for the subunit B of this receptor. The HTR3B transcription start site is not unequivocally identified. In the present study we used transcription start site analyses, transcript-specific RT-PCR, and functional promoter analyses to identify the 5' structure of the HTR3B gene. According to these experiments, two alternative promoters control the expression of different HTR3B transcripts in the peripheral and central nervous system. The transcription start sites observed in the intestine corresponded to the current human genome annotation (NCBI Build 36.1, March 2006). The transcription start sites in the brain, however, were localized in a region about 4000 bp downstream. The brain transcripts lacked the coding first exon of the HTR3B structure published earlier but had an upstream-extended exon 2 containing a new potential translational start site. Reporter gene analyses showed significant promoter activity of the genomic region located 1560 bp upstream to 93 bp downstream of the brain-specific transcription start sites. This data suggests a different transcriptional regulation of the HTR3B gene in the peripheral and the central nervous system that leads to the expression of transcripts with variations in the 5' coding sequence. Further studies on the expression, structure and function of therefore expected tissue-specific 5-HT(3B) isoforms are required.
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Affiliation(s)
- Mladen Vassilev Tzvetkov
- Department of Clinical Pharmacology University Hospital Göttingen 4E1-323 Robert-Koch-Str. 40 37075 Göttingen Germany.
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Yamada K, Hattori E, Iwayama Y, Ohnishi T, Ohba H, Toyota T, Takao H, Minabe Y, Nakatani N, Higuchi T, Detera-Wadleigh SD, Yoshikawa T. Distinguishable haplotype blocks in the HTR3A and HTR3B region in the Japanese reveal evidence of association of HTR3B with female major depression. Biol Psychiatry 2006; 60:192-201. [PMID: 16487942 DOI: 10.1016/j.biopsych.2005.11.008] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2005] [Revised: 10/25/2005] [Accepted: 11/18/2005] [Indexed: 12/11/2022]
Abstract
BACKGROUND Genetic variations in the serotonin receptor 3A (HTR3A) and 3B (HTR3B) genes, positioned in tandem on chromosome 11q23.2, have been shown to be associated with psychiatric disorders in samples of European ancestry. But the polymorphisms highlighted in these reports map to different locations in the two genes, therefore it is unclear which gene exerts a stronger effect on susceptibility. METHODS To determine the haplotype block structure in the genomic regions of HTR3A and HTR3B, and to examine whether genetic variations in the region show evidence of association with schizophrenia and affective disorder in the Japanese, we performed haplotype-based case-control analysis using 29 polymorphisms. RESULTS Two haplotype blocks each were revealed for HTR3A and HTR3B in Japanese samples. In HTR3B, haplotype block 2 that included a nonsynonymous single nucleotide polymorphism (SNP), yielded evidence of association with major depression in females (global p = .0023). Analysis employing genome-wide SNPs using the STRUCTURE program did not detect population stratification in the samples. CONCLUSIONS Our results suggest an important role for HTR3B in major depression in women and also raise the possibility that previously proposed disease-associated SNPs in the HTR3A/B region in Caucasians are in linkage disequilibrium with haplotype block 2 of HTR3B in the Japanese.
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Affiliation(s)
- Kazuo Yamada
- Laboratory for Molecular Psychiatry, RIKEN Brain Science Institute, Wako, Kawaguchi, Saitama, Japan
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Niesler B, Frank B, Hebebrand J, Rappold G. Serotonin receptor genes HTR3A and HTR3B are not involved in Gilles de la Tourette syndrome. Psychiatr Genet 2006; 15:303-4. [PMID: 16314763 DOI: 10.1097/00041444-200512000-00015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Serotonin has been implicated in a variety of neuropsychiatric disorders. Serotonergic dysfunction is thought to be involved in the pathophysiology of the Gilles de la Tourette Syndrome (GTS). GTS is characterized by multiple vocal and motoric tics. Among selective, competitive 5-HT(3) receptor antagonists, ondansetron represents a promising drug in GTS treatment. In our study both serotonin receptor subunit genes, HTR3A and HTR3B, were examined for sequence variations in GTS patients. We have analyzed DNA samples from 49 patients by SSCP and dHPLC. In HTR3A, we detected five mutations and in HTR3B the analysis revealed six sequence variants. Statistical analysis rated all variants as probably non-disease-related polymorphisms. Yet a certain effect of the detected variants on the severity of the disease cannot be excluded.
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Sugai T, Suzuki Y, Sawamura K, Fukui N, Inoue Y, Someya T. The effect of 5-hydroxytryptamine 3A and 3B receptor genes on nausea induced by paroxetine. THE PHARMACOGENOMICS JOURNAL 2006; 6:351-6. [PMID: 16534507 DOI: 10.1038/sj.tpj.6500382] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
We investigated the effect of 5-hydroxytryptamine 3A and 3B receptor (HTR3A and HTR3B) gene polymorphisms on nausea induced by paroxetine in Japanese psychiatric patients. Blood samples were collected from 78 individuals after at least 2 weeks treatment with the same daily dose of paroxetine. The patients visited every 2 weeks and the paroxetine dose was changed in response to their clinical symptoms. Nausea was assessed at each visit. The Tyr129Ser polymorphism of the HTR3B gene had a significant effect on the incidence of nausea (P=0.038). Logistic regression analysis also showed that patients with the Tyr/Tyr genotype had a 3.95-fold (P=0.048) higher risk of developing nausea than patients with the Ser allele. HTR3A gene polymorphisms and the CYP2D6 gene polymorphisms had no significant effect on the incidence of nausea. The mean score of nausea severity was corrected by the Bonferroni test. HTR3B gene polymorphisms are significant predictors of paroxetine-induced nausea.
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Affiliation(s)
- T Sugai
- Department of Psychiatry, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Houtani T, Munemoto Y, Kase M, Sakuma S, Tsutsumi T, Sugimoto T. Cloning and expression of ligand-gated ion-channel receptor L2 in central nervous system. Biochem Biophys Res Commun 2005; 335:277-85. [PMID: 16083862 DOI: 10.1016/j.bbrc.2005.07.079] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2005] [Accepted: 07/13/2005] [Indexed: 11/22/2022]
Abstract
An orphan receptor of ligand-gated ion-channel type (L2, also termed ZAC according to the presence of zinc ion for channel activation) was identified by computer-assisted search programs on human genome database. The L2 protein shares partial homology with serotonin receptors 5HT3A and 5HT3B. We have cloned L2 cDNA derived from human caudate nucleus and characterized the exon-intron structure as follows: (1) The L2 protein has four transmembrane regions (M1-M4) and a long cytoplasmic loop between M3 and M4. (2) The sequence is conserved in species including chimpanzee, dog, cow, and opossum. (3) Nine exons form its protein-coding region and especially exon 5 corresponds to a disulfide bond region on the amino-terminal side. Our analysis using multiple tissue cDNA panels revealed that at least two splicing variants of L2 mRNA are present. The cDNA PCR amplification study revealed that L2 mRNA is expressed in tissues including brain, pancreas, liver, lung, heart, kidney, and skeletal muscle while 5HT3A mRNA could be detected in brain, heart, placenta, lung, kidney, pancreas, and skeletal muscle, and 5HT3B mRNA in brain, kidney, and skeletal muscle, suggesting different significance in tissue expression of these receptors. Regional expression of L2 mRNA and protein was examined in brain. The RT-PCR studies confirmed L2 mRNA expression in hippocampus, striatum, amygdala, and thalamus in adult brain. The L2 protein was immunolocalized by using antipeptide antibodies. Immunostained tissue sections revealed that L2-like immunoreactivity was dominantly expressed in the hippocampal CA3 pyramidal cells and in the polymorphic layer of the dentate gyrus. We analyzed the expression of L2 protein in HEK293 cells using GFP fusion protein reporter system. Western blots revealed that L2 protein confers sugar chains on the extracellular side. In transfected HEK293 cells, cellular membranes and intracellular puncta were densely labeled with GFP, suggesting selective dispatch to the final destination.
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MESH Headings
- Aged
- Aged, 80 and over
- Alternative Splicing
- Amino Acid Sequence
- Animals
- Blotting, Southern
- Blotting, Western
- Brain/metabolism
- Cattle
- Caudate Nucleus/metabolism
- Cell Line
- Cell Membrane/metabolism
- Central Nervous System/metabolism
- Cloning, Molecular
- Cysteine Loop Ligand-Gated Ion Channel Receptors
- Cytoplasm/metabolism
- DNA, Complementary/metabolism
- Dogs
- Exons
- Gene Expression Regulation
- Genes, Reporter
- Green Fluorescent Proteins/metabolism
- Hippocampus/metabolism
- Humans
- Introns
- Ion Channels/biosynthesis
- Ion Channels/genetics
- Ions
- Kidney/metabolism
- Male
- Middle Aged
- Molecular Sequence Data
- Muscle, Skeletal/metabolism
- Nerve Tissue Proteins/biosynthesis
- Nerve Tissue Proteins/genetics
- Opossums
- Pan troglodytes
- Peptide-N4-(N-acetyl-beta-glucosaminyl) Asparagine Amidase/chemistry
- Polymerase Chain Reaction
- Protein Sorting Signals
- Protein Structure, Tertiary
- RNA, Messenger/metabolism
- Receptors, Serotonin/chemistry
- Receptors, Serotonin/physiology
- Recombinant Fusion Proteins/chemistry
- Reverse Transcriptase Polymerase Chain Reaction
- Sequence Homology, Amino Acid
- Tissue Distribution
- Transfection
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Affiliation(s)
- Takeshi Houtani
- Department of Anatomy and Brain Science, Kansai Medical University, Moriguchi, Osaka 570-8506, Japan
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