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Quintas M, Neto JL, Sequeiros J, Sousa A, Pereira-Monteiro J, Lemos C, Alonso I. Going Deep into Synaptic Vesicle Machinery Genes and Migraine Susceptibility - A Case-Control Association Study. Headache 2020; 60:2152-2165. [PMID: 32979221 DOI: 10.1111/head.13957] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2020] [Revised: 08/28/2020] [Accepted: 08/29/2020] [Indexed: 11/29/2022]
Abstract
OBJECTIVE A number of observations, including among our study population, have implicated variants in the syntaxin-1A, a component of the synaptic vesicles, in migraine susceptibility. Therefore, we hypothesize that variants in other components of the vesicle machinery are involved in migraine. BACKGROUND Migraine is a common and complex neurologic disorder that affects approximately 15-18% of the general population. The exact cause of migraine is unknown; however, genetic studies have made possible substantial progress toward the identification of underlying molecular pathways. Neurotransmitters have been for long considered to have a key role in migraine pathophysiology; so we investigated common variants in genes involved in the synaptic vesicle machinery and their impact in migraine susceptibility. METHODS We performed a case-control study comprising 188 unrelated patients with headache and 286 healthy controls in a population from the north of Portugal. Benefiting from the presence of linkage disequilibrium, we selected and genotyped 119 tagging single-nucleotide polymorphisms in 18 genes. RESULTS We found significant associations between single-nucleotide variants and migraine in 7 genes, SYN1, SYN2, SNAP25, VAMP2, STXBP1, STXBP5, and UNC13A, either conferring an increased risk or protection of migraine. Due to SYN1 X-chromosomal location, we performed the statistical analysis separated by gender and, in the female group, the C allele of rs5906435 increased the risk for migraine susceptibility (P = .021; OR = 1.69; 95% CI: 1.21-2.34). In contrast, the TT genotype of the same variant emerged as a potential protective factor (P = .003; OR = 0.45; 95% CI: 0.27-0.74). The SYN2 analysis supported the rs3773364's G allele (P = .014) as a risk factor for migraine, and although not statistically significant after correction, the AG genotype (P = .006; OR = 1.86; 95% CI: 1.20-2.90) reinforced the allelic findings. Additionally, we found the SNAP25-rs363039's CT genotype (P = .001; OR = 2.14; 95% CI: 1.36-3.34), the STXBP5-rs1765028's T allele (P = .041; OR = 1.46; 95% CI: 1.13-1.90), and the UNC13B-rs7851161's TT genotype (P = .001; OR = 2.14; 95% CI: 1.36-3.34) as statistically significant risk factors for migraine liability. VAMP2-rs1150's G allele revealed a risk association to migraine, not statistically significant after correction (P = .068). Additionally, we found haplotypes in SYN1, SYN2, STXBP1, and UNC13B to be associated with migraine. CONCLUSIONS Overall, this study provides a new insight into migraine liability, identifying possible starting points for functional studies.
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Affiliation(s)
- Marlene Quintas
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - João Luís Neto
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Jorge Sequeiros
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Alda Sousa
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - José Pereira-Monteiro
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Carolina Lemos
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Isabel Alonso
- UnIGENe, IBMC - Institute for Molecular and Cell Biology, Universidade do Porto, Porto, Portugal.,i3S - Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal.,ICBAS - Instituto Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
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Zeng Y, Chen R, Ma M, Liu B, Xia J, Xu H, Liu Y, Du X, Hu Z, Yang Q, Zhang L. Associations of EDNRA and EDNRB Polymorphisms with Intracerebral Hemorrhage. World Neurosurg 2019; 129:e472-e477. [PMID: 31150867 DOI: 10.1016/j.wneu.2019.05.186] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 05/20/2019] [Accepted: 05/22/2019] [Indexed: 12/19/2022]
Abstract
OBJECTIVE The most potent vasoconstrictor, endothelin-1 and its receptors, endothelin receptor A (EDNRA) and endothelin receptor B (EDNRB) are involved in hypertension. Hypertension is a major risk factor of intracerebral hemorrhage (ICH). Recent studies have demonstrated increased plasma endothelin-1 level in ICH patients and relationships between EDNRA and EDNRB genetic variants and ischemic stroke. The aim of the current study was to investigate whether EDNRA and EDNRB polymorphisms are associated with ICH by interacting with blood pressure levels. METHODS Five EDNRA and EDNRB polymorphisms were genotyped in this case-control study. RESULTS We identified that EDNRA rs5333 T allele might be a protective factor of ICH (adjusted odds ratio [OR] = 0.638, 95% CI: 0.417-0.977, P = 0.038), while EDNRB rs5351 A allele could be a risk factor of ICH (adjusted OR = 1.476, 95% CI: 1.042-2.089, P = 0.028). Moreover, we only found that the GG genotype of EDNRA rs5335 had higher diastolic blood pressure than the GC + CC genotypes in ICH patients (91.69 ± 18.77 vs. 84.71 ± 21.48, P = 0.004). CONCLUSIONS These findings support the important role of EDNRA and EDNRB polymorphisms in ICH, and suggest that they do not interact with blood pressure levels on altering ICH risk.
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Affiliation(s)
- Yi Zeng
- Department of Geriatrics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - RuiJuan Chen
- Department of Geriatrics, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - MingMing Ma
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - BaoQiong Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jian Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - HongWei Xu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - YunHai Liu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - XiaoPing Du
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - ZhiPing Hu
- Department of Neurology, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - QiDong Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Le Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan, China.
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Ezzat GM, Ali AB, Mohamed NA, Hetta HF. Association of endothelin receptor type A rs5333 gene polymorphism with steroid response in Egyptian children with idiopathic nephrotic syndrome. Pharmacogenomics 2019; 20:133-141. [DOI: 10.2217/pgs-2018-0175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aim: To investigate ENDRA rs5333 gene polymorphism distribution in idiopathic nephrotic syndrome (INS) and to analyze their association with response to steroid therapy, and biochemical markers of INS. Subjects & methods: The PCR-restriction fragment length polymorphism was used to analyze ENDRA rs5333 polymorphism in 100 children with idiopathic nephrotic syndrom (INS) and 100 healthy children. Plasma endothelin-1 were measured by ELISA. Results: The ENDRA rs5333 gene polymorphism was not associated with risk of INS. The frequency of minor allele (C) was significantly higher in the steroid resistant nephrotic syndrome group than the steroid sensitive group. The CC and TC mutant variants were associated with higher plasma levels of cholesterol, albumin, urea and 24-h urinary protein, but were not associated with risk of hypertension. The endothelin-1 plasma level was higher in INS than control and in steroid resistant nephrotic syndrome group when compared with steroid sensitive group cases. Conclusion: The ENDRA rs5333 gene polymorphism may be associated with genetic predisposition to steroid resistance in INS Egyptian children.
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Affiliation(s)
- Ghada M Ezzat
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Ahlam B Ali
- Department of Pediatrics, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Nahed A Mohamed
- Department of Medical Biochemistry, Faculty of Medicine, Assiut University, Assiut, Egypt
| | - Helal F Hetta
- Department of Medical Microbiology & Immunology, Faculty of Medicine, Assiut University, Assiut, Egypt
- Department of Internal Medicine, University of Cincinnati medical center, Cincinnati, OH, USA
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Iljazi A, Ayata C, Ashina M, Hougaard A. The Role of Endothelin in the Pathophysiology of Migraine-a Systematic Review. Curr Pain Headache Rep 2018; 22:27. [PMID: 29557064 DOI: 10.1007/s11916-018-0682-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
PURPOSE OF REVIEW Vasoactive peptides play a key role in the attack-initiating cascade of migraine. Recent studies have highlighted a potentially important role for endothelin-1, a potent vasoconstrictor peptide, in migraine pathophysiology. Here, we review the current data on endothelin's involvement in migraine. RECENT FINDINGS We identified 23 articles. Nine studies reported on endothelin-1 plasma concentrations in patients with migraine, eight studies investigated relevant genetic associations, five studies investigated endothelin-1 and spreading depression in animals, and one randomized controlled clinical trial tested the efficacy of an endothelin antagonist in the acute treatment of migraine in patients both with and without aura. Elevated endothelin-1 plasma levels have been reported in the early phase of migraine attacks. Genetic abnormalities related to the endothelin type A receptor have been reported in migraineurs. Endothelin-1 potently induces spreading depression in animals, which may explain the connection between endothelial irritation and migraine aura. Endothelin-1 could be a primary factor in the attack-triggering cascade of migraine attacks with and without aura. Additional studies in humans and animal models are needed to further elucidate the role of endothelin-1 in migraine.
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Affiliation(s)
- Afrim Iljazi
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Nordre Ringvej 57, DK-2600, Glostrup, Denmark
| | - Cenk Ayata
- Stroke Service and Neuroscience Intensive Care Unit, Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA, USA
| | - Messoud Ashina
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Nordre Ringvej 57, DK-2600, Glostrup, Denmark
- Institute of Clinical Medicine, Faculty of Health and Medical Science, University of Copenhagen, Copenhagen, Denmark
| | - Anders Hougaard
- Danish Headache Center and Department of Neurology, Rigshospitalet Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Nordre Ringvej 57, DK-2600, Glostrup, Denmark.
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Ersig AL, Schutte DL, Standley J, Leslie E, Zimmerman B, Kleiber C, Hanrahan K, Murray JC, McCarthy AM. Relationship of Genetic Variants With Procedural Pain, Anxiety, and Distress in Children. Biol Res Nurs 2017; 19:339-349. [PMID: 28413930 DOI: 10.1177/1099800417692878] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
OBJECTIVE This study used a candidate gene approach to examine genomic variation associated with pain, anxiety, and distress in children undergoing a medical procedure. STUDY DESIGN Children aged 4-10 years having an IV catheter insertion were recruited from three Midwestern children's hospitals. Self-report measures of pain, anxiety, and distress were obtained as well as an observed measure of distress. Samples were collected from children and biological parents for analysis of genomic variation. Genotyped variants had known or suspected association with phenotypes of interest. Analyses included child-only association and family-based transmission disequilibrium tests. RESULTS Genotype and phenotype data were available from 828 children and 376 family trios. Children were 50% male, had a mean age of 7.2 years, and were 84% White/non-Hispanic. In family-based analysis, one single-nucleotide polymorphism (SNP; rs1143629, interleukin ( IL1B) 1β) was associated with observed child distress at Bonferroni-corrected levels of significance ( p = .00013), while two approached significance for association with high state anxiety (rs6330 Nerve Growth Factor, Beta Subunit, [ NGFB]) and high trait anxiety (rs6265 brain-derived neurotrophic factor [ BDNF]). In the child-only analysis, multiple SNPs showed nominal evidence of relationships with phenotypes of interest. rs6265 BDNF and rs2941026 cholecystokinin B receptor had possible relationships with trait anxiety in child-only and family-based analyses. CONCLUSIONS Exploring genomic variation furthers our understanding of pain, anxiety, and distress and facilitates genomic screening to identify children at high risk of procedural pain, anxiety, and distress. Combined with clinical observations and knowledge, such explorations could help guide tailoring of interventions to limit procedure-related distress and identify genes and pathways of interest for future genotype-phenotype studies.
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Affiliation(s)
- Anne L Ersig
- 1 College of Nursing, The University of Iowa, Iowa City, IA, USA
| | - Debra L Schutte
- 2 College of Nursing, Wayne State University, Detroit, MI, USA
| | | | - Elizabeth Leslie
- 4 School of Dental Medicine, The University of Pittsburgh, Pittsburgh, PA, USA
| | - Bridget Zimmerman
- 5 College of Public Health, The University of Iowa, Iowa City, IA, USA
| | | | - Kirsten Hanrahan
- 6 The University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Jeffrey C Murray
- 3 College of Medicine, The University of Iowa, Iowa City, IA, USA
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Jacobs B, Dussor G. Neurovascular contributions to migraine: Moving beyond vasodilation. Neuroscience 2016; 338:130-144. [PMID: 27312704 PMCID: PMC5083225 DOI: 10.1016/j.neuroscience.2016.06.012] [Citation(s) in RCA: 106] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Revised: 05/27/2016] [Accepted: 06/07/2016] [Indexed: 12/31/2022]
Abstract
Migraine is the third most common disease worldwide, the most common neurological disorder, and one of the most common pain conditions. Despite its prevalence, the basic physiology and underlying mechanisms contributing to the development of migraine are still poorly understood and development of new therapeutic targets is long overdue. Until recently, the major contributing pathophysiological event thought to initiate migraine was cerebral and meningeal arterial vasodilation. However, the role of vasodilation in migraine is unclear and recent findings challenge its necessity. While vasodilation itself may not contribute to migraine, it remains possible that vessels play a role in migraine pathophysiology in the absence of vasodilation. Blood vessels consist of a variety of cell types that both release and respond to numerous mediators including growth factors, cytokines, adenosine triphosphate (ATP), and nitric oxide (NO). Many of these mediators have actions on neurons that can contribute to migraine. Conversely, neurons release factors such as norepinephrine and calcitonin gene-related peptide (CGRP) that act on cells native to blood vessels. Both normal and pathological events occurring within and between vascular cells could thus mediate bi-directional communication between vessels and the nervous system, without the need for changes in vascular tone. This review will discuss the potential contribution of the vasculature, specifically endothelial cells, to current neuronal mechanisms hypothesized to play a role in migraine. Hypothalamic activity, cortical spreading depression (CSD), and dural afferent input from the cranial meninges will be reviewed with a focus on how these mechanisms can influence or be impacted by blood vessels. Together, the data discussed will provide a framework by which vessels can be viewed as important potential contributors to migraine pathophysiology, even in light of the current uncertainty over the role of vasodilation in this disorder.
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Affiliation(s)
- Blaine Jacobs
- Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080, United States
| | - Gregory Dussor
- Behavioral and Brain Sciences, The University of Texas at Dallas, 800 West Campbell Road, Richardson, TX 75080, United States.
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Miao J, Wang F, Zheng W, Zhuang X. Association of the Apolipoprotein E polymorphism with migraine: a meta-analysis. BMC Neurol 2015; 15:138. [PMID: 26264634 PMCID: PMC4534059 DOI: 10.1186/s12883-015-0385-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Accepted: 07/17/2015] [Indexed: 11/17/2022] Open
Abstract
Background Apolipoprotein E (ApoE) gene has been reported to be associated with migraine and tension-type headache (TTH), but the results are conflicting. This study aimed to evaluate the association of ApoE with migraine by a meta-analysis. Methods MEDLINE, ISI Web of Knowledge, The Cochrane Central Register of Controlled Trials, and EMBASE databases were searched to identify eligible studies published in English from 2000 to 2014. Data were extracted using standardized forms. The association was assessed by relative risk (RR) with 95 % confidence intervals (CIs) using a fixed or random effects model. Results Four studies, comprising 649 migraineurs, 229 TTH subjects and 975 controls, met all the criteria and were included in the meta-analysis. No significant difference was found comparing genotypic and allelic frequencies in the case of migraineurs versus controls and TTH subjects versus controls. Only when migraineurs and TTH subjects were considered as a whole group, ApoE4 was found to increase the relative risk of headache by 1.48 (95 % CI 1.16, 1.90; P = 0.002), compared to controls. Conclusions ApoE ε4 allele is not associated with migraine susceptibility, but is positively related to headache (including migraine and TTH).
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Affiliation(s)
- Jiayin Miao
- Department of Neurology, Affiliated Zhongshan Hospital of Xiamen University, 201 Hubinnan Road, Xiamen, 361004, China.
| | - Feng Wang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, 361005, China. .,College of Computer Engineering, Jimei University, Xiamen, 361021, China.
| | - Weihong Zheng
- Department of Neurology, Affiliated Zhongshan Hospital of Xiamen University, 201 Hubinnan Road, Xiamen, 361004, China.
| | - Xiaorong Zhuang
- Department of Neurology, Affiliated Zhongshan Hospital of Xiamen University, 201 Hubinnan Road, Xiamen, 361004, China.
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Migraine genetics: current findings and future lines of research. Neurogenetics 2014; 16:77-95. [PMID: 25501253 DOI: 10.1007/s10048-014-0433-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Accepted: 11/25/2014] [Indexed: 01/03/2023]
Abstract
In the last two decades, migraine research has greatly advanced our current knowledge of the genetic contributions and the pathophysiology of this common and debilitating disorder. Nonetheless, this knowledge still needs to grow further and to translate into more effective treatments. To date, several genes involved in syndromic and monogenic forms of migraine have been identified, allowing the generation of animal models which have significantly contributed to current knowledge of the mechanisms underlying these rare forms of migraine. Common forms of migraine are instead posing a greater challenge, as they may most often stem from complex interactions between multiple common genetic variants, with environmental triggers. This paper reviews our current understanding of migraine genetics, moving from syndromic and monogenic forms to oligogenic/polygenic migraines most recently addressed with some success through genome-wide association studies. Methodological issues in study design and future perspectives opened by biomarker research will also be briefly addressed.
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Zouitina Y, Terrier M, Hyra M, Seryer D, Chillon JM, Bugnicourt JM. Prolonged acute migraine with aura and reversible brain MRI abnormalities after liquid sclerotherapy. J Headache Pain 2014; 15:41. [PMID: 24948446 PMCID: PMC4068884 DOI: 10.1186/1129-2377-15-41] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2014] [Accepted: 06/14/2014] [Indexed: 11/10/2022] Open
Abstract
Transient visual disturbances constitute the most commonly reported neurological side effect during and immediately after sclerotherapy. A few studies, based on clinical and diffusion-weighted MRI assessments, have suggested that these transient neurological symptoms correspond to migraine with aura. Recently, it has been reported that brain magnetic resonance imaging can reveal transient T2*-weighted abnormalities during the acute phase of migraine with aura. We reported a 36-year-old man who presented with transient neurological symptoms and concomitant T2*-weighted abnormalities on brain magnetic resonance imaging immediately after liquid sclerotherapy. We hypothesize that the reversible nature of the patient's T2*-weighted abnormalities may indicate a relationship with the post-sclerotherapy migraine with aura attack.
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Affiliation(s)
| | | | | | | | | | - Jean-Marc Bugnicourt
- Department of Neurology, Amiens University Hospital, 1 Place Victor Pauchet, F-80054 Amiens cedex, France.
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Joseph EK, Levine JD. Role of endothelial cells in antihyperalgesia induced by a triptan and β-blocker. Neuroscience 2012; 232:83-9. [PMID: 23262231 DOI: 10.1016/j.neuroscience.2012.12.020] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2012] [Revised: 11/27/2012] [Accepted: 12/11/2012] [Indexed: 01/08/2023]
Abstract
While blood vessels have long been implicated in diverse pain syndromes (e.g., migraine headache, angina pectoris, vasculitis, and Raynaud's syndrome), underlying mechanisms remain to be elucidated. Recent evidence supports a contribution of the vascular endothelium in endothelin-1-induced hyperalgesia, and its enhancement by repeated mechanical stimulation; a phenomenon referred to as stimulus-induced enhancement of (endothelin) hyperalgesia (SIEH). SIEH is thought to be mediated by release of ATP from endothelial cells, to act on P2X3 receptors on nociceptors. In the present study we evaluated the ability of another vasoactive hyperalgesic agent, epinephrine, to induce endothelial cell-dependent hyperalgesia and SIEH. We found that epinephrine also produces hyperalgesia and SIEH. Both P2X3 receptor antagonists, A317491 and octoxynol-9, which attenuate endothelial cell function, eliminated SIEH without affecting epinephrine hyperalgesia. We further evaluated the hypothesis that members of two important classes of drugs used to treat migraine headache, whose receptors are present in endothelial cells - the triptans and β blockers - have a vascular component to their anti-hyperalgesic action. For this, we tested the effect of ICI-118,551, a β₂-adrenergic receptor antagonist and sumatriptan, an agonist at 5-HT1B and 5-HT₁D receptors, on nociceptive effects of endothelin and epinephrine. ICI-118,551 inhibited endothelin SIEH, and attenuated epinephrine hyperalgesia and SIEH. Sumatriptan inhibited epinephrine SIEH and inhibited endothelin hyperalgesia and SIEH, while having no effect on epinephrine hyperalgesia or the hyperalgesia induced by a prototypical direct-acting inflammatory mediator, prostaglandin E₂. These results support the suggestion that triptans and β-blockers interact with the endothelial cell component of the blood vessel to produce anti-hyperalgesia.
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Affiliation(s)
- E K Joseph
- Department of Medicine, Division of Neuroscience, University of California at San Francisco, San Francisco, CA 94143-0440, USA; Department of Oral Surgery, Division of Neuroscience, University of California at San Francisco, San Francisco, CA 94143-0440, USA
| | - J D Levine
- Department of Medicine, Division of Neuroscience, University of California at San Francisco, San Francisco, CA 94143-0440, USA; Department of Oral Surgery, Division of Neuroscience, University of California at San Francisco, San Francisco, CA 94143-0440, USA.
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Miao J, Wang F, Fang Y. Association of 231G>A polymorphism of endothelin type A receptor gene with migraine: a meta-analysis. J Neurol Sci 2012; 323:232-5. [PMID: 23058564 DOI: 10.1016/j.jns.2012.09.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2012] [Revised: 09/20/2012] [Accepted: 09/25/2012] [Indexed: 11/08/2022]
Abstract
BACKGROUND/AIMS Vascular dysfunction is implied in migraine. Endothelin type A receptor (EDNRA) is a receptor for endothelin-1, a potent vasoconstrictor. Several studies have investigated the association between EDNRA -231G>A SNP and migraine, but showed conflicting results. This study aimed to evaluate the association between EDNRA -231A allele and migraine by meta-analysis. METHODS Relevant databases were searched to identify eligible studies published in English from 2000 to 2012. Data were extracted using standardized forms. The association was assessed by relative risk (RR) with 95% confidence intervals (CIs) using a fixed or random effects model to determine the strength of the genetic association. RESULTS Three studies comprising 440 migraineurs, 222 subjects with tension-type headaches (TTHs) and 1323 controls were included in the meta-analysis. A significant difference was found between migraineurs and controls with AA genotype vs. AG+GG, and pooled RR with fixed effect was 4.04 (95% CI 1.173, 1.585; p=0.000, I(2)=15.1%). However, there was no statistically significant difference between TTH and controls (p=0.774). CONCLUSIONS This meta-analysis provides evidence suggesting a significant association between EDNRA -231G>A polymorphism and migraine.
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Affiliation(s)
- Jiayin Miao
- Department of Neurology, Zhongshan Hospital, Xiamen University, 201 Hubinnan Road, Xiamen 361004, China
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