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Altamura C, Corbelli I, de Tommaso M, Di Lorenzo C, Di Lorenzo G, Di Renzo A, Filippi M, Jannini TB, Messina R, Parisi P, Parisi V, Pierelli F, Rainero I, Raucci U, Rubino E, Sarchielli P, Li L, Vernieri F, Vollono C, Coppola G. Pathophysiological Bases of Comorbidity in Migraine. Front Hum Neurosci 2021; 15:640574. [PMID: 33958992 PMCID: PMC8093831 DOI: 10.3389/fnhum.2021.640574] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/23/2021] [Indexed: 12/12/2022] Open
Abstract
Despite that it is commonly accepted that migraine is a disorder of the nervous system with a prominent genetic basis, it is comorbid with a plethora of medical conditions. Several studies have found bidirectional comorbidity between migraine and different disorders including neurological, psychiatric, cardio- and cerebrovascular, gastrointestinal, metaboloendocrine, and immunological conditions. Each of these has its own genetic load and shares some common characteristics with migraine. The bidirectional mechanisms that are likely to underlie this extensive comorbidity between migraine and other diseases are manifold. Comorbid pathologies can induce and promote thalamocortical network dysexcitability, multi-organ transient or persistent pro-inflammatory state, and disproportionate energetic needs in a variable combination, which in turn may be causative mechanisms of the activation of an ample defensive system with includes the trigeminovascular system in conjunction with the neuroendocrine hypothalamic system. This strategy is designed to maintain brain homeostasis by regulating homeostatic needs, such as normal subcortico-cortical excitability, energy balance, osmoregulation, and emotional response. In this light, the treatment of migraine should always involves a multidisciplinary approach, aimed at identifying and, if necessary, eliminating possible risk and comorbidity factors.
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Affiliation(s)
- Claudia Altamura
- Headache and Neurosonology Unit, Neurology, Campus Bio-Medico University Hospital, Rome, Italy
| | - Ilenia Corbelli
- Clinica Neurologica, Dipartimento di Medicina, Ospedale S.M. Misericordia, Università degli Studi di Perugia, Perugia, Italy
| | - Marina de Tommaso
- Applied Neurophysiology and Pain Unit, SMBNOS Department, Bari Aldo Moro University, Policlinico General Hospital, Bari, Italy
| | - Cherubino Di Lorenzo
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino, Latina, Italy
| | - Giorgio Di Lorenzo
- Laboratory of Psychophysiology and Cognitive Neuroscience, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy.,IRCCS-Fondazione Santa Lucia, Rome, Italy
| | | | - Massimo Filippi
- Neuroimaging Research Unit, Division of Neuroscience, Institute of Experimental Neurology, Milan, Italy.,Neurology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Tommaso B Jannini
- Laboratory of Psychophysiology and Cognitive Neuroscience, Department of Systems Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Roberta Messina
- Neurology Unit, IRCCS San Raffaele Scientific Institute, Milan, Italy.,Vita-Salute San Raffaele University, Milan, Italy
| | - Pasquale Parisi
- Child Neurology, Department of Neuroscience, Mental Health and Sense Organs (NESMOS), Faculty of Medicine & Psychology, c/o Sant'Andrea Hospital, Sapienza University, Rome, Italy
| | | | - Francesco Pierelli
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino, Latina, Italy.,Headache Clinic, IRCCS-Neuromed, Pozzilli, Italy
| | - Innocenzo Rainero
- Neurology I, Department of Neuroscience "Rita Levi Montalcini," University of Torino, Torino, Italy
| | - Umberto Raucci
- Department of Emergency, Acceptance and General Pediatrics, Bambino Gesù Children's Hospital, Scientific Institute for Research, Hospitalization and Healthcare (IRCCS), Rome, Italy
| | - Elisa Rubino
- Neurology I, Department of Neuroscience "Rita Levi Montalcini," University of Torino, Torino, Italy
| | - Paola Sarchielli
- Clinica Neurologica, Dipartimento di Medicina, Ospedale S.M. Misericordia, Università degli Studi di Perugia, Perugia, Italy
| | - Linxin Li
- Nuffield Department of Clinical Neurosciences, Centre for Prevention of Stroke and Dementia, John Radcliffe Hospital, University of Oxford, Oxford, United Kingdom
| | - Fabrizio Vernieri
- Headache and Neurosonology Unit, Neurology, Campus Bio-Medico University Hospital, Rome, Italy
| | - Catello Vollono
- Department of Neurology, Fondazione Policlinico Universitario "Agostino Gemelli" IRCCS, Catholic University, Rome, Italy
| | - Gianluca Coppola
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino, Latina, Italy
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Parisi P, Paolino MC, Raucci U, Della Vecchia N, Belcastro V, Villa MP, Striano P. Ictal Epileptic Headache: When Terminology Is Not a Moot Question. Front Neurol 2019; 10:785. [PMID: 31396147 PMCID: PMC6664028 DOI: 10.3389/fneur.2019.00785] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2018] [Accepted: 07/08/2019] [Indexed: 11/13/2022] Open
Abstract
The relationship between headache and epilepsy is complex and despite the nature of this association is not yet clear. In the last few years, it has been progressively introduced the concept of the “ictal epileptic headache” that was included in the recently revised International Classification of Headaches Disorders 3rd edition (ICHD-3-revised). The diagnostic criteria for ictal epileptic headache (IEH) suggested in 2012 were quite restrictive thus leading to the underestimation of this phenomenon. However, these criteria have not yet been included into the ICHD-3 revision published in 2018, thus creating confusion among both, physicians and experts in this field. Here, we highlight the importance to strictly apply the original IEH criteria explaining the reasons through the analysis of the clinical, historical, epidemiological and pathophysiological characteristics of the IEH itself. In addition, we discuss the issues related to the neurophysiopathological link between headache and epilepsy as well as to the classification of these epileptic events as “autonomic seizure.”
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Affiliation(s)
- Pasquale Parisi
- Chair of Pediatrics, Child Neurology, NESMOS Department, Faculty of Medicine and Psychology, Sapienza University, Sant'Andrea Hospital, Rome, Italy
| | - Maria Chiara Paolino
- Chair of Pediatrics, Child Neurology, NESMOS Department, Faculty of Medicine and Psychology, Sapienza University, Sant'Andrea Hospital, Rome, Italy
| | - Umberto Raucci
- Pediatric Emergency Department, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | | | - Vincenzo Belcastro
- Neurology Unit, Department of Neuroscience, Sant'Anna Hospital, Como, Italy
| | - Maria Pia Villa
- Chair of Pediatrics, Child Neurology, NESMOS Department, Faculty of Medicine and Psychology, Sapienza University, Sant'Andrea Hospital, Rome, Italy
| | - Pasquale Striano
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genova, Italy.,Paediatric Neurology and Muscular Diseases Unit, G. Gaslini' Institute, Genova, Italy
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3
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Abstract
Migraine is the most frequent neurological disorder in the adult population worldwide, affecting up to 12% of the general population and more frequent in women (~25%). It has a high impact on our society due to its disabling nature and, therein, reduced quality of life and increased absenteeism from work. Headache is the primary clinical manifestation and it has been associated with ‘a hereditary or predisposed sensitivity of neurovascular reactions to certain stimuli or to cyclic changes in the central nervous system’ (1). Amongst the many neurotransmitters in the brain, the serotonergic (serotonin, 5-HT) system from the brainstem raphe nucleus has been most convincingly implicated in migraine pathophysiology. The documented changes in 5-HT metabolism and in the processing of central 5-HT-mediated responses during and in between migraine attacks have led to the suggestion that migraine is a consequence of a central neurochemical imbalance that involves a low serotonergic disposition. Although the exact cascade of events that link abnormal serotonergic neurotransmission to the manifestation of head pain and the accompanying symptoms has yet to be fully understood, recent evidence suggests that a low 5-HT state facilitates activation of the trigeminovascular nociceptive pathway, as induced by cortical spreading depression. In this short review, we present and discuss the original and most recent findings that support a role for altered serotonergic neurotransmission in the manifestation of migraine headache.
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Affiliation(s)
- E Hamel
- Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, 3801 University Street, Montréal, Québec, Canada, H3A 2B4
| | - Headache Currents
- Montreal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, 3801 University Street, Montréal, Québec, Canada, H3A 2B4
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Abstract
Primary headache and attention-deficit/hyperactivity disorder (ADHD) are common disorders in children and adolescences, frequently associated to severe cognitive, emotional, and behavioral impairments. They both are a disabling condition with consequences on family and child's quality of life. Literature data on their association are contrasting. Dopaminergic system dysfunction, brain iron deficiency, and sleep disturbance should be considered to better understand headache and ADHD overlap. In this review, we analyze the complex association between these two diseases and the potential impact on child neurodevelopment.
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5
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Genome association study of human chromosome 13 and susceptibility to coronary artery disease in a Chinese population. J Genet 2013; 92:85-91. [DOI: 10.1007/s12041-013-0207-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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6
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Papetti L, Nicita F, Parisi P, Spalice A, Villa MP, Kasteleijn-Nolst Trenité DGA. "Headache and epilepsy"--how are they connected? Epilepsy Behav 2013; 26:386-93. [PMID: 23122969 DOI: 10.1016/j.yebeh.2012.09.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Accepted: 09/20/2012] [Indexed: 12/15/2022]
Abstract
The relationship between headache and seizures is a complicated one, since these two conditions are related in numerous ways. Although the nature of this association is unclear, several plausible explanations exist: the two disorders coexist by chance; headache is part (or even the sole ictal phenomenon) of seizures or the post-ictal state; both disorders share a common underlying etiology; and epilepsy mimics the symptoms of migraine (as in benign childhood epilepsy). Seizures and headaches as well as their respective primary syndromes (epilepsy and headache/migraine) share several pathophysiological mechanisms. These mechanisms especially involve neurotransmitter and ion channel dysfunctions. Also, photosensitivity seems to play a role in the connection. In order to improve the care for patients with a clinical connection between migraine and epilepsy, it is necessary to try to understand more accurately the exact pathophysiological point of connection between these two conditions. Both experimental and clinical measures are required to better understand this relationship. The development of animal models, molecular studies defining more precise genotype/phenotype correlations, and multicenter clinical studies with revision of clinical criteria for headache/epilepsy-related disorders represent the start for planning future translational research. In this paper, we review the relationship between migraine and epilepsy in terms of epidemiology and pathophysiology with regard to translational research and clinical correlations and classification.
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Affiliation(s)
- Laura Papetti
- Department of Pediatrics, Child Neurology Division, Sapienza University of Rome, Italy
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7
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Menon S, Griffiths L. Emerging genomic biomarkers in migraine. FUTURE NEUROLOGY 2013. [DOI: 10.2217/fnl.12.80] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Migraine is a debilitating neurovascular condition classified as either migraine with aura or migraine without aura. A significant genetic basis has been implicated in migraine and has probed the role of neurotransmitters, hormones and vascular genes in this disorder. The aim of this review is to highlight the recent genetic discoveries contributing to our understanding of the complex pathogenesis of migraine. The current review will discuss the role of neurotransmitter-related genes in migraine, including the recently identified TRESK and variants of the KCNN3 gene, as well as outlining studies investigating hormone receptor genes, such as ESR1 and PGR, and vascular-related genes, including the MTHFR and NOTCH 3 genes.
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Affiliation(s)
- Saras Menon
- Genomics Research Centre, Griffith Health Institute, Parklands Drive, Southport, Queensland, Australia
| | - Lyn Griffiths
- Genomics Research Centre, Griffith Health Institute, Parklands Drive, Southport, Queensland, Australia
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8
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Párdutz Á, Fejes A, Bohár Z, Tar L, Toldi J, Vécsei L. Kynurenines and headache. J Neural Transm (Vienna) 2011; 119:285-96. [DOI: 10.1007/s00702-011-0665-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2011] [Accepted: 05/20/2011] [Indexed: 12/12/2022]
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9
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Migralepsy and related conditions: Advances in pathophysiology and classification. Seizure 2011; 20:271-5. [DOI: 10.1016/j.seizure.2011.02.012] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2011] [Revised: 02/08/2011] [Accepted: 02/21/2011] [Indexed: 01/30/2023] Open
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Corominas R, Sobrido MJ, Ribasés M, Cuenca-León E, Blanco-Arias P, Narberhaus B, Roig M, Leira R, López-González J, Macaya A, Cormand B. Association study of the serotoninergic system in migraine in the Spanish population. Am J Med Genet B Neuropsychiatr Genet 2010; 153B:177-84. [PMID: 19455600 DOI: 10.1002/ajmg.b.30972] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In order to evaluate the contribution of 19 serotonin-related genes to the susceptibility to migraine in a Spanish population we performed a case-control association study of 122 single nucleotide polymorphisms (SNPs), selected according to genetic coverage parameters, in 528 migraine patients -308 with migraine without aura (MO) and 220 with migraine with aura (MA)- and 528 sex-matched migraine-free controls. The single-marker analysis identified nominal associations with the migraine phenotype or with the MO or MA subtypes. The multiple-marker analysis revealed risk haplotypes in three genes that remained significantly associated with migraine after correction by permutations. Two-marker risk haplotypes were identified in the HTR2B (rs16827801T-rs10194776G) and MAOA (rs3027400G-rs2072743C) genes conferring susceptibility to MO, and a four-marker haplotype in DDC was specific of MA (rs2329340A-rs11974297C-rs2044859T-rs11761683G). The present study supports the involvement of HTR2B and MAOA genes in the genetic predisposition to MO, while DDC might confer susceptibility to MA. These results suggest a differential involvement of serotonin-related genes in the genetic background of MO and MA.
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Affiliation(s)
- R Corominas
- Grup de Recerca en Neurologia Infantil i Psiquiatria Genètica, Hospital Universitari Vall d'Hebron, Barcelona, Spain
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11
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Functional gene variants of the serotonin-synthesizing enzyme tryptophan hydroxylase 2 in migraine. J Neural Transm (Vienna) 2009; 116:815-9. [PMID: 19434366 DOI: 10.1007/s00702-009-0236-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2009] [Accepted: 04/22/2009] [Indexed: 12/13/2022]
Abstract
Serotonin (5-HT) plays an important role in the pathophysiology of migraine. Tryptophan hydroxylase 2 (TPH2) is the rate-limiting enzyme in the biosynthesis of 5-HT in the brain and is therefore a major factor in the availability of 5-HT and its rate of production. We hypothesized that functional TPH2 gene variants are associated with migraine. In a case-control study approach, two proven functional and two putatively functional variants of the TPH2 gene were investigated in 266 migraine patients and 153 controls. Genotype, allele, and haplotype frequencies did not differ between healthy subjects and migraineurs. A subgroup analysis for the occurrence of aura or clinical characteristics, including the number of attacks, did not reveal a positive association for the investigated polymorphisms. Our data argue against a major influence of the TPH2 gene promoter region in migraine.
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12
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Fernandez F, Esposito T, Lea RA, Colson NJ, Ciccodicola A, Gianfrancesco F, Griffiths LR. Investigation of gamma-aminobutyric acid (GABA) A receptors genes and migraine susceptibility. BMC MEDICAL GENETICS 2008; 9:109. [PMID: 19087248 PMCID: PMC2615754 DOI: 10.1186/1471-2350-9-109] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2008] [Accepted: 12/16/2008] [Indexed: 11/19/2022]
Abstract
BACKGROUND Migraine is a neurological disorder characterized by recurrent attacks of severe headache, affecting around 12% of Caucasian populations. It is well known that migraine has a strong genetic component, although the number and type of genes involved is still unclear. Prior linkage studies have reported mapping of a migraine gene to chromosome Xq 24-28, a region containing a cluster of genes for GABA A receptors (GABRE, GABRA3, GABRQ), which are potential candidate genes for migraine. The GABA neurotransmitter has been implicated in migraine pathophysiology previously; however its exact role has not yet been established, although GABA receptors agonists have been the target of therapeutic developments. The aim of the present research is to investigate the role of the potential candidate genes reported on chromosome Xq 24-28 region in migraine susceptibility. In this study, we have focused on the subunit GABA A receptors type epsilon (GABRE) and type theta (GABRQ) genes and their involvement in migraine. METHODS We have performed an association analysis in a large population of case-controls (275 unrelated Caucasian migraineurs versus 275 controls) examining a set of 3 single nucleotide polymorphisms (SNPs) in the coding region (exons 3, 5 and 9) of the GABRE gene and also the I478F coding variant of the GABRQ gene. RESULTS Our study did not show any association between the examined SNPs in our test population (P>0.05). CONCLUSION Although these particular GABA receptor genes did not show positive association, further studies are necessary to consider the role of other GABA receptor genes in migraine susceptibility.
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Affiliation(s)
- Francesca Fernandez
- Genomics Research Centre, Griffith Institute for Health and Medical Research, Griffith University, Gold Coast, Queensland, Australia
| | - Teresa Esposito
- Institute of Genetics and Biophysics, Adriano Buzzati-Traverso, CNR, Naples, Italy
| | - Rod A Lea
- Genomics Research Centre, Griffith Institute for Health and Medical Research, Griffith University, Gold Coast, Queensland, Australia
- Institute of Environmental Science and Research, Wellington, New Zealand
| | - Natalie J Colson
- Genomics Research Centre, Griffith Institute for Health and Medical Research, Griffith University, Gold Coast, Queensland, Australia
| | - Alfredo Ciccodicola
- Institute of Genetics and Biophysics, Adriano Buzzati-Traverso, CNR, Naples, Italy
| | | | - Lyn R Griffiths
- Genomics Research Centre, Griffith Institute for Health and Medical Research, Griffith University, Gold Coast, Queensland, Australia
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Fernandez F, Colson NJ, Griffiths LR. Pharmacogenetics of migraine: genetic variants and their potential role in migraine therapy. Pharmacogenomics 2008; 8:609-22. [PMID: 17559350 DOI: 10.2217/14622416.8.6.609] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Migraine is a paroxysmal neurological disorder affecting up to 6% of males and 18% of females in the general population, and has been demonstrated to have a strong, but complex, genetic component. Genetic investigation of migraine provides hope that new targets for medications and individual specific therapy will be developed. The identification of polymorphisms or genetic biomarkers for disease susceptibility and treatment should aid in providing a better understanding of migraine pathology and, consequently, more appropriate and efficient treatment for migraineurs. In this review, we will discuss results investigating genetic biomarkers for migraine and their potential role in future therapy planning.
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Affiliation(s)
- F Fernandez
- Genomics Research Centre, School of Medical Science, Griffith University, Gold Coast, Queensland, 9726 Australia
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14
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Abstract
The genetic dissection of complex disorders via genetic marker data has gained popularity in the postgenome era. Methods for typing genetic markers on human chromosomes continue to improve. Compared with the popular individual genotyping experiment, a pooled-DNA experiment (alleotyping experiment) is more cost effective when carrying out genetic typing. This chapter provides an overview of association mapping using pooled DNA and describes a five-stage study design including the preliminary calibration of peak intensities, estimation of allele frequency, single-locus association mapping, multilocus association mapping, and a confirmation study. Software and an analysis of authentic data are presented. The strengths and weaknesses of pooled-DNA analyses, as well as possible future applications for this method, are discussed.
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Affiliation(s)
- Hsin-Chou Yang
- Institute of Biomedical Sciences, Academia Sinica, Nankang, Taipei, Taiwan
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15
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Johnson MP, Fernandez F, Colson NJ, Griffiths LR. A pharmacogenomic evaluation of migraine therapy. Expert Opin Pharmacother 2007; 8:1821-35. [PMID: 17696786 DOI: 10.1517/14656566.8.12.1821] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Migraine is a common idiopathic primary headache disorder with significant mental, physical and social health implications. Accompanying an intense unilateral pulsating head pain other characteristic migraine symptoms include nausea, emesis, phonophobia, photophobia and in approximately 20-30% of migraine cases, neurologic disturbances associated with the aura phase. Although selective serotonin (5-HT) receptor agonists (i.e., 5-HT(1B/1D)) are successful in alleviating migrainous symptoms in < or = 70% of known sufferers, for the remaining 30%, additional migraine abortive medications remain unsuccessful, not tested or yet to be identified. Genetic characterization of the migrainous disorder is making steady progress with an increasing number of genomic susceptibility loci now identified on chromosomes 1q, 4q, 5q, 6p, 11q, 14q, 15q, 17p, 18q, 19p and Xq. The 4q, 5q, 17p and 18q loci involve endophenotypic susceptibility regions for various migrainous symptoms. In an effort to develop individualized pharmacotherapeutics, the identification of these migraine endophenotypic loci may well be the catalyst needed to aid in this goal. In this review the authors discuss the present treatment of migraine, known genomic susceptibility regions and results from migraine (genetic) association studies. The authors also discuss pharmacogenomic considerations for more individualized migraine prophylactic treatments.
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Affiliation(s)
- Matthew P Johnson
- Griffith University, Genomics Research Centre, School of Medical Science, PMB 50 GCMC Gold Coast, Queensland, Australia
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16
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Abstract
Biomarkers are physical signs or laboratory measurements that occur in association with a pathological process and have putative diagnostic and/or prognostic utility. In migraine, clinical, radiological, and biochemical biomarkers might be helpful to improve diagnosis, get insight in pathophysiology, and facilitate treatment choices. Genetic biomarkers are defined as genetic variations (mutations or polymorphisms) that can predict disease susceptibility, disease outcome, or treatment response. As yet, only a few genetic biomarkers for migraine are available. Mutations in 3 different genes responsible for familial hemiplegic migraine, a monogenetic subtype of migraine with aura, and the MTHFR C677T polymorphism in common forms of migraine are clear examples. Many positive findings from linkage studies and association studies in common forms of migraine have not been replicated, and are therefore of less clinical use. In this review, we will discuss genetic biomarkers in migraine.
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Affiliation(s)
- Boukje De Vries
- Department of Human Genetics, Leiden University Medical Centre, Leiden, The Netherlands
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18
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Yang HC, Liang YJ, Huang MC, Li LH, Lin CH, Wu JY, Chen YT, Fann C. A genome-wide study of preferential amplification/hybridization in microarray-based pooled DNA experiments. Nucleic Acids Res 2006; 34:e106. [PMID: 16931491 PMCID: PMC1616968 DOI: 10.1093/nar/gkl446] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2006] [Revised: 05/05/2006] [Accepted: 06/09/2006] [Indexed: 01/27/2023] Open
Abstract
Microarray-based pooled DNA methods overcome the cost bottleneck of simultaneously genotyping more than 100 000 markers for numerous study individuals. The success of such methods relies on the proper adjustment of preferential amplification/hybridization to ensure accurate and reliable allele frequency estimation. We performed a hybridization-based genome-wide single nucleotide polymorphisms (SNPs) genotyping analysis to dissect preferential amplification/hybridization. The majority of SNPs had less than 2-fold signal amplification or suppression, and the lognormal distributions adequately modeled preferential amplification/hybridization across the human genome. Comparative analyses suggested that the distributions of preferential amplification/hybridization differed among genotypes and the GC content. Patterns among different ethnic populations were similar; nevertheless, there were striking differences for a small proportion of SNPs, and a slight ethnic heterogeneity was observed. To fulfill appropriate and gratuitous adjustments, databases of preferential amplification/hybridization for African Americans, Caucasians and Asians were constructed based on the Affymetrix GeneChip Human Mapping 100 K Set. The robustness of allele frequency estimation using this database was validated by a pooled DNA experiment. This study provides a genome-wide investigation of preferential amplification/hybridization and suggests guidance for the reliable use of the database. Our results constitute an objective foundation for theoretical development of preferential amplification/hybridization and provide important information for future pooled DNA analyses.
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Affiliation(s)
- H.-C. Yang
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - Y.-J. Liang
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - M.-C. Huang
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - L.-H. Li
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - C.-H. Lin
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - J.-Y. Wu
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - Y.-T. Chen
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
| | - C.S.J. Fann
- Institute of Biomedical Sciences, Academia SinicaTaipei 115, Taiwan
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