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Petersen AS, Lund N, Goadsby PJ, Belin AC, Wang SJ, Fronczek R, Burish M, Cho SJ, Peres MFP, Jensen RH. Recent advances in diagnosing, managing, and understanding the pathophysiology of cluster headache. Lancet Neurol 2024; 23:712-724. [PMID: 38876749 DOI: 10.1016/s1474-4422(24)00143-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 03/21/2024] [Accepted: 03/28/2024] [Indexed: 06/16/2024]
Abstract
Cluster headache, characterised by attacks of severe, recurrent, unilateral headache and ipsilateral cranial autonomic symptoms, remains a primary headache with an elusive pathophysiology. Recent advances have introduced effective treatments and broadened understanding of the clinical features of cluster headache. These features are similar in patients globally, but regional differences in prevalence and burden exist. International collaborations have led to identification of eight genetic loci associated with cluster headache. The pathophysiological mechanisms are still not fully understood but recent studies show that targeting the trigeminal autonomic reflex by neurostimulation, or targeting the neuropeptide calcitonin gene-related peptide (CGRP), might lessen the attack burden. The US Food and Drug Administration has approved galcanezumab, a monoclonal antibody targeting CGRP, as the first specific preventive treatment for episodic cluster headache. However, a preventive effect was not replicated in chronic cluster headache, and the European Medicines Agency did not approve galcanezumab, restricting its availability in Europe. Owing to the low prevalence of cluster headache, continued collaboration through multicentre clinical trials and data sharing will be imperative for further breakthroughs in understanding and management.
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Affiliation(s)
- Anja S Petersen
- Danish Headache Center and Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Nunu Lund
- Danish Headache Center and Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Peter J Goadsby
- National Institute for Health and Care Research King's Clinical Research Facility, King's College London, London, UK; Department of Neurology, University of California, Los Angeles, CA, USA
| | - Andrea C Belin
- Centre for Cluster Headache, Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Shuu-Jiun Wang
- Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan; College of Medicine and Brain Research Center, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Rolf Fronczek
- Department of Neurology, Leiden University Medical Centre, Leiden, Netherlands
| | - Mark Burish
- Department of Neurosurgery, McGovern Medical School at UTHealth, Houston, TX, USA
| | - Soo-Jin Cho
- Department of Neurology, Dongtan Sacred Heart Hospital, Hallym University College of Medicine, Hwaseong, South Korea
| | - Mario F P Peres
- Hospital Israelita Albert Einstein, São Paulo, Brazil; Instituto de Psiquiatria, Hospital das Clínicas da Faculdade de Medicina da University of São Paulo, São Paulo, Brazil
| | - Rigmor H Jensen
- Danish Headache Center and Department of Neurology, Rigshospitalet-Glostrup, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark; Institute of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark.
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2
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Coppola G, Abagnale C, Sebastianelli G, Goadsby PJ. Pathophysiology of cluster headache: From the trigeminovascular system to the cerebral networks. Cephalalgia 2024; 44:3331024231209317. [PMID: 38415635 DOI: 10.1177/03331024231209317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
BACKGROUND Despite advances in neuroimaging and electrophysiology, cluster headache's pathogenesis remains unclear. This review will examine clinical neurophysiology studies, including electrophysiological and functional neuroimaging, to determine if they might help us construct a neurophysiological model of cluster headache. RESULTS Clinical, biochemical, and electrophysiological research have implicated the trigeminal-parasympathetic system in cluster headache pain generation, although the order in which these two systems are activated, which may be somewhat independent, is unknown. Electrophysiology and neuroimaging have found one or more central factors that may cause seasonal and circadian attacks. The well-known posterior hypothalamus, with its primary circadian pacemaker suprachiasmatic nucleus, the brainstem monoaminergic systems, the midbrain, with an emphasis on the dopaminergic system, especially when cluster headache is chronic, and the descending pain control systems appear to be involved. Functional connection investigations have verified electrophysiological evidence of functional changes in distant brain regions connecting to wide cerebral networks other than pain. CONCLUSION We propose that under the impact of external time, an inherited misalignment between the primary circadian pacemaker suprachiasmatic nucleus and other secondary extra- suprachiasmatic nucleus clocks may promote disturbance of the body's internal physiological clock, lowering the threshold for bout recurrence.
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Affiliation(s)
- Gianluca Coppola
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino ICOT, Latina, Italy
| | - Chiara Abagnale
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino ICOT, Latina, Italy
| | - Gabriele Sebastianelli
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome Polo Pontino ICOT, Latina, Italy
| | - Peter J Goadsby
- NIHR King's Clinical Research Facility, and Wolfson Sensory, Pain and Regeneration Research Centre, Institute of Psychiatry, Psychology and Neuroscience, King's College London UK
- Department of Neurology, University of California, Los Angeles, Los Angeles, California, USA
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3
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Qiu E, Xing X, Wang Y, Tian L. Altered functional connectivity of the thalamus and salience network in patients with cluster headache: a pilot study. Neurol Sci 2024; 45:269-276. [PMID: 37578630 DOI: 10.1007/s10072-023-07011-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/03/2023] [Indexed: 08/15/2023]
Abstract
BACKGROUND AND OBJECTIVE Previous studies have shown that the salience network (SN) and the thalamus are involved in cluster headache (CH) attacks. However, very little is known regarding the altered thalamus-SN functional connectivity in CH. The aim of this study was to explore alterations of functional connectivity between the thalamus and the SN in patients with CH to further gain insight into the pathophysiology of CH. MATERIALS AND METHODS The resting-state functional MRI (rs-fMRI) data of 21 patients with CH in the headache attack remission state during in-bout periods and 21 age- and sex-matched normal controls were obtained. The rs-fMRI data were analyzed by the independent component analysis (ICA) method, and the thalamus-SN functional connectivity in patients with right-sided and left-sided CH was compared with that in normal controls. RESULTS Decreased functional connectivity was found between the thalamus, both ipsilateral and contralateral to the headache side, and the SN during headache remission state in both right-sided CH patients and left-sided CH patients. CONCLUSIONS The findings suggest that the decreased functional connectivity between the thalamus and SN might be one of the pathologies underpinning the CH. This helps us to understand better the nature of the brain dysfunction in CH and the basic pathologies of CH, which implies that this deserves further investigation.
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Affiliation(s)
- Enchao Qiu
- Jefferson Headache Center, Department of Neurology, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
| | - Xinbo Xing
- Department of Radiology, the Fourth Medical Center, Chinese PLA General Hospital, Beijing, 100048, China
| | - Yan Wang
- Department of Radiology, the First Medical Center, Chinese PLA General Hospital, Beijing, 100853, China
| | - Lixia Tian
- Department of Biomedical Engineering, Beijing Jiaotong University, Beijing, 100044, China
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Lin YK, Tsai CL, Lin GY, Chou CH, Yang FC. Pathophysiology of Chronic Migraine: Insights from Recent Neuroimaging Research. Curr Pain Headache Rep 2022; 26:843-854. [PMID: 36207509 DOI: 10.1007/s11916-022-01087-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2022] [Indexed: 11/28/2022]
Abstract
PURPOSE OF REVIEW Chronic migraine (CM) is a highly disabling primary headache disorder with a substantial impact on patients' quality of life. Episodic migraine (EM) and CM are dynamic states; CM usually evolves from EM alongside increased headache frequency, comorbidities, and medication overuse, supporting the notion that migraine is a spectrum disorder. This narrative review aims to summarize neuroimaging studies to better understand the pathophysiology of CM. RECENT FINDINGS Positron emission tomography studies have revealed abnormal energy metabolism and metabolic changes in the dorsal rostral pons in individuals with CM, suggesting that this structure has a key role in the pathophysiology of migraine generation and chronification. Magnetic resonance spectroscopy studies have suggested that thalamocortical pathway dysfunction may contribute to migraine chronification, while functional magnetic resonance imaging studies have highlighted that hypothalamic activity may be involved. Recent evidence highlights functional and structural alterations in cortical and subcortical pain-related brain regions in patients with CM. Whether these functional and structural abnormalities of the brain cause migraine chronification or are a consequence of repeated attacks is still debated. In the future, imaging patterns that predict the transformation from EM to CM should be identified.
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Affiliation(s)
- Yu-Kai Lin
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Section 2, Cheng-Kung Road, Neihu 114, No. 325, Taipei, Taiwan.,Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Chia-Lin Tsai
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Section 2, Cheng-Kung Road, Neihu 114, No. 325, Taipei, Taiwan
| | - Guan-Yu Lin
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Section 2, Cheng-Kung Road, Neihu 114, No. 325, Taipei, Taiwan
| | - Chung-Hsing Chou
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Section 2, Cheng-Kung Road, Neihu 114, No. 325, Taipei, Taiwan.,Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan
| | - Fu-Chi Yang
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Section 2, Cheng-Kung Road, Neihu 114, No. 325, Taipei, Taiwan. .,Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan.
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Silvestro M, Tessitore A, Orologio I, Battista G, Siciliano M, Tedeschi G, Russo A. Cluster headache pathophysiology: What we have learned from advanced neuroimaging. Headache 2022; 62:436-452. [PMID: 35315064 PMCID: PMC9314615 DOI: 10.1111/head.14279] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2021] [Revised: 01/17/2022] [Accepted: 01/17/2022] [Indexed: 12/12/2022]
Abstract
Background Although remarkable progress has been achieved in understanding cluster headache (CH) pathophysiology, there are still several gaps about the mechanisms through which independent subcortical and cortical brain structures interact with each other. These gaps could be partially elucidated by structural and functional advanced neuroimaging investigations. Objective Although we are aware that substantial achievements have come from preclinical, neurophysiological, and biochemical experiments, the present narrative review aims to summarize the most significant findings from structural, microstructural, and functional neuroimaging investigations, as well as the consequent progresses in understanding CH pathophysiological mechanisms, to achieve a comprehensive and unifying model. Results Advanced neuroimaging techniques have contributed to overcoming the peripheral hypothesis that CH is of cavernous sinus pathology, in transitioning from the pure vascular hypothesis to a more comprehensive trigeminovascular model, and, above all, in clarifying the role of the hypothalamus and its connections in the genesis of CH. Conclusion Altogether, neuroimaging findings strongly suggest that, beyond the theoretical model of the “pain matrix,” the model of the “neurolimbic pain network” that is accepted in migraine research could also be extended to CH. Indeed, although the hypothalamus’ role is undeniable, the genesis of CH attacks is complex and seems to not be just the result of a single “generator.” Cortical‐hypothalamic‐brainstem functional interconnections that can switch between out‐of‐bout and in‐bout periods, igniting the trigeminovascular system (probably by means of top‐down mechanisms) and the consensual trigeminal autonomic reflexes, may represent the “neuronal background” of CH.
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Affiliation(s)
- Marcello Silvestro
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Alessandro Tessitore
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Ilaria Orologio
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Giorgia Battista
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Mattia Siciliano
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Gioacchino Tedeschi
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Antonio Russo
- Headache Centre, Department of Advanced Medical and Surgical Sciences, University of Campania "Luigi Vanvitelli", Naples, Italy
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Abstract
Background Cluster headache is a highly disabling primary headache disorder which is widely described as the most painful condition a human can experience. Aim To provide an overview of the clinical characteristics, epidemiology, risk factors, differential diagnosis, pathophysiology and treatment options of cluster headache, with a focus on recent developments in the field. Methods Structured review of the literature on cluster headache. Results Cluster headache affects approximately one in 1000 of the population. It is characterised by attacks of severe unilateral head pain associated with ipsilateral cranial autonomic symptoms, and the tendency for attacks to occur with circadian and circannual periodicity. The pathophysiology of cluster headache and other primary headache disorders has recently become better understood and is thought to involve the hypothalamus and trigeminovascular system. There is good quality evidence for acute treatment of attacks with parenteral triptans and high flow oxygen; preventive treatment with verapamil; and transitional treatment with oral corticosteroids or greater occipital nerve injection. New pharmacological and neuromodulation therapies have recently been developed. Conclusion Cluster headache causes distinctive symptoms, which once they are recognised can usually be managed with a variety of established treatments. Recent pathophysiological understanding has led to the development of newer pharmacological and neuromodulation therapies, which may soon become established in clinical practice.
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Affiliation(s)
- Sanjay Cheema
- Headache and Facial Pain Group, University College London (UCL) Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
| | - Manjit Matharu
- Headache and Facial Pain Group, University College London (UCL) Queen Square Institute of Neurology and The National Hospital for Neurology and Neurosurgery, London, UK
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Abstract
Background Key structures for the pathophysiology of primary headache disorders such as migraine, cluster headache, and other trigeminal autonomic cephalalgias were identified by imaging in the past years. Objective Available data on functional imaging in primary headache disorders are summarized in this review. Material and Methods We performed a MEDLINE search on December 27th, 2020 using the search terms "primary headache" AND "imaging" that returned 453 results in English, out of which 137 were labeled reviews. All articles were evaluated for content and relevance for this narrative review. Results The structure depicted most consistently using functional imaging in different states of primary headaches (without and with pain) was the posterior hypothalamus. Whole-brain imaging techniques such as resting-state functional resonance imaging showed a wide-ranging association of cortical and subcortical areas with human nociceptive processing in the pathophysiological mechanisms underlying the different TACs. Similarities of distinct groups of primary headache disorders, as well as their differences in brain activation across these disorders, were highlighted. Conclusion The importance of neuroimaging research from clinical practice point of view remains the reliable and objective distinction of each individual pain syndrome from one another. This will help to make the correct clinical diagnosis and pave the way for better and effective treatment in the future. More research will be necessary to fulfill this unmet need.
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Affiliation(s)
- Steffen Naegel
- Department of Neurology, Martin Luther University Halle- Wittenberg and University Hospital Halle, Halle (Saale), Germany
| | - Mark Obermann
- Department of Neurology, Klinikum Weser-Egge, Höxter, Germany
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8
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Courault P, Demarquay G, Zimmer L, Lancelot S. Cluster headache: state of the art of pharmacological treatments and therapeutic perspectives. Fundam Clin Pharmacol 2020; 35:595-619. [DOI: 10.1111/fcp.12636] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/13/2020] [Accepted: 12/03/2020] [Indexed: 12/26/2022]
Affiliation(s)
- Pierre Courault
- Lyon Neuroscience Research Center (CRNL) Université de LyonCNRSINSERM Lyon France
- Hospices Civils de Lyon (HCL) Lyon France
| | | | - Luc Zimmer
- Lyon Neuroscience Research Center (CRNL) Université de LyonCNRSINSERM Lyon France
- Hospices Civils de Lyon (HCL) Lyon France
- CERMEP‐Imaging Platform Groupement Hospitalier Est Bron France
- National Institute for Nuclear Science and Technology (INSTN) CEA Saclay France
| | - Sophie Lancelot
- Lyon Neuroscience Research Center (CRNL) Université de LyonCNRSINSERM Lyon France
- Hospices Civils de Lyon (HCL) Lyon France
- CERMEP‐Imaging Platform Groupement Hospitalier Est Bron France
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Feng MH, Li ZX, Wang Q, Manyande A, Li YJ, Li SY, Xu W, Xiang HB. Neurochemical alterations of different cerebral regions in rats with myocardial ischemia-reperfusion injury based on proton nuclear magnetic spectroscopy analysis. Aging (Albany NY) 2020; 13:2294-2309. [PMID: 33318304 PMCID: PMC7880342 DOI: 10.18632/aging.202250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2020] [Accepted: 10/27/2020] [Indexed: 11/25/2022]
Abstract
BACKGROUND Recent studies have demonstrated a complex and dynamic neural crosstalk between the heart and brain. A heart-brain interaction has been described regarding cardiac ischemia, but the cerebral metabolic mechanisms involved are unknown. METHODS Male Sprague Dawley rats were randomly allocated into 2 groups: those receiving myocardial ischemia-reperfusion surgery (IR group, n =10) and surgical controls (Con group, n=10). These patterns of metabolic abnormalities in different brain regions were assessed using proton magnetic resonance spectroscopy (PMRS). RESULTS Results assessed by echocardiography showed resultant cardiac dysfunction following heart ischemia-reperfusion. Compared with the control group, the altered metabolites in the IR group were taurine and choline, and differences mainly occurred in the thalamus and brainstem. CONCLUSIONS Alterations in cerebral taurine and choline are important findings offering new avenues to explore neuroprotective strategies for myocardial ischemia-reperfusion injury. These results provide preliminary evidence for understanding the cerebral metabolic process underlying myocardial ischemia-reperfusion injury in rats.
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Affiliation(s)
- Mao-Hui Feng
- Department of Gastrointestinal Surgery, Zhongnan Hospital, Wuhan University, Wuhan, China.,The Clinical Medical Research Center of Peritoneal Cancer of Wuhan, Clinical Cancer Study Center of Hubei Province, Key Laboratory of Tumor Biological Behavior of Hubei Province, Wuhan, China
| | - Zhi-Xiao Li
- Departments of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Qian Wang
- Departments of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Anne Manyande
- School of Human and Social Sciences, University of West London, London, UK
| | - Yu-Juan Li
- Departments of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Shun-Yuan Li
- Department of Anesthesiology, The First Affiliated Quanzhou Hospital of Fujian Medical University, Quanzhou, China
| | - Weiguo Xu
- Department of Orthopedics, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hong-Bing Xiang
- Departments of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Abstract
PURPOSE OF REVIEW The purpose of this paper is to review and synthesize current literature in which neurochemical and structural brain imaging were used to investigate chronic migraine (CM) pathophysiology and to further discuss the clinical implications. RECENT FINDINGS Spectroscopic and structural MRI studies have shown the presence of both impaired metabolism and structural alterations in the brain of CM patients. Metabolic changes in key brain regions support the notion of altered energetics and homeostasis as part of CM pathophysiology. Furthermore, CM, like other chronic pain disorders, may undergo structural reorganization in pain-related brain regions following near persistent endogenous painful input. Finally, both imaging techniques may provide potential biomarkers of disease state and progression and may help guide novel therapeutic interventions or strategies. Spectroscopic and structural MRI have revealed novel aspects of CM pathophysiology. Findings from the former support the metabolic theory of migraine pathogenesis.
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Affiliation(s)
- Kuan-Lin Lai
- Department of Neurology, The Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
| | - David M Niddam
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan.
- Institute of Brain Science, School of Medicine, National Yang-Ming University, No. 155, Section 2, Linong Street, Taipei, 112, Taiwan.
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Chen YL, He ZG, Wang Q, Xiang HB, Fan L, Xiong J. Specific Patterns of Spinal Metabolite Ratio Underlying α-Me-5-HT-evoked Pruritus Compared with Compound 48/80 Based on Proton Nuclear Magnetic Resonance Spectroscopy. Curr Med Sci 2020; 40:761-766. [PMID: 32862388 DOI: 10.1007/s11596-020-2233-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2020] [Accepted: 06/12/2020] [Indexed: 01/03/2023]
Abstract
Mechanisms of pruritus are implicated in the dysregulation of the metabolites in the spinal cord. We investigated pruritus behavioral testing in three groups of young adult male C57Bl/6 mice, including one group treated with normal saline, while the other groups intradermally injected with α-Me-5-HT (histamine-independent pruritogen), compound 48/80 (histamine-dependent pruritogen) at the nape skin of the neck, respectively. Proton nuclear magnetic resonance spectroscopy (MRS) was used to compare spinal metabolites from the vertebral cervical among three groups, and to study the association of spinal metabolite ratio and pruritus intensity. The MRS-measured N-acetylaspartate-to-myoinositol ratio (NAA/Ins) was significantly correlated with the number of scratches between normal saline group and 48/80 group or α-Me-5-HT group (both P<0.0001), indicating that NAA/Ins may be a robust surrogate marker of histamine-independent/dependent pruritogen. There was significant difference in Glu/Ins between normal saline group and 48/80 group (P=0.017), indicating that Glu/Ins may be a surrogate marker of histamine-dependent pruritogen, while GABA/Ins was highly significantly different between normal saline group and α-Me-5-HT group (P=0.008), suggesting that GABA/Ins may be a surrogate marker of histamine-independent pruritogen. MRS may reflect the extent of pruritus intensity elicited by α-Me-5-HT and compound 48/80 with sensitivity similar to the number of scratches, and above potential markers need to be further validated in pre-clinical and clinical treatment trials.
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Affiliation(s)
- Ying-le Chen
- Department of Anesthesiology, the First Affiliated Quanzhou Hospital of Fujian Medical University, Quanzhou, 362000, China
| | - Zhi-Gang He
- Emergency Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Qian Wang
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Hong-Bing Xiang
- Department of Anesthesiology and Pain Medicine, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
| | - Li Fan
- Department of Orthopedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Jun Xiong
- Hepatobiliary Surgery Center, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China.
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Abstract
This literature review provides an overview of the research using magnetic resonance imaging (MRI) in pediatric migraine and compares findings with the adult migraine literature. A literature search using PubMed was conducted using all relevant sources up to February 2019. Using MRI methods to categorize and explain pediatric migraine in comparison with adult migraine is important, in order to recognize and appreciate the differences between the two entities, both clinically and physiologically. We aim to demonstrate the differences and similarities between pediatric and adult migraine using data from white matter and gray matter structural studies, cerebral perfusion, metabolites, and functional MRI (fMRI) studies, including task-based and resting-state blood oxygen level-dependent studies. By doing this we identify areas that need further research, as well as possible areas where intervention could alter outcomes.
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Abstract
BACKGROUND The clinical picture, but also neuroimaging findings, suggested the brainstem and midbrain structures as possible driving or generating structures in migraine. FINDINGS This has been intensely discussed in the last decades and the advent of modern imaging studies refined the involvement of rostral parts of the pons in acute migraine attacks, but more importantly suggested a predominant role of the hypothalamus and alterations in hypothalamic functional connectivity shortly before the beginning of migraine headaches. This was shown in the NO-triggered and also in the preictal stage of native human migraine attacks. Another headache type that is clinically even more suggestive of hypothalamic involvement is cluster headache, and indeed a structure in close proximity to the hypothalamus has been identified to play a crucial role in attack generation. CONCLUSION It is very likely that spontaneous oscillations of complex networks involving the hypothalamus, brainstem, and dopaminergic networks lead to changes in susceptibility thresholds that ultimately start but also terminate headache attacks. We will review clinical and neuroscience evidence that puts the hypothalamus in the center of scientific attention when attack generation is discussed.
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Affiliation(s)
- Arne May
- Department of Systems Neuroscience, University Medical Center Eppendorf, Hamburg, Germany
| | - Rami Burstein
- Department of Anesthesia and Critical Care, Beth Israel Deaconess Medical center, Department of Anesthesia, Harvard medical School, Boston, MA, USA
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14
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Wang Q, Li ZX, Li YJ, Manyande A, Li SY, Feng MH, Wu DZ, Xiang HB. Alterations in amino acid levels and metabolite ratio of spinal cord in rat with myocardial ischemia-reperfusion injury by proton magnetic resonance spectroscopy. Am J Transl Res 2019; 11:3101-3108. [PMID: 31217879 PMCID: PMC6556651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Accepted: 03/01/2019] [Indexed: 06/09/2023]
Abstract
OBJECTIVES The mechanism behind spinal metabolites and myocardial ischemia-reperfusion (IR) injury is not well understood. Proton magnetic resonance spectroscopic analysis of spinal cord extracts provides a quick evaluation of the specific metabolic activity in rats with myocardial IR injury. We investigated the relationship between the IR-related variables and the changes in spinal metabolites. METHODS Proton magnetic resonance spectroscopy (1H-MRS) was used to assess the spinal metabolites of adult rats with and without myocardial IR injury (n = 6 per group). Myocardial IR injury was reproduced using intermittent occlusion of the left anterior descending coronary artery. We studied the relationship between the metabolite ratio measurement and IR-related variables. All rats underwent 1H-MRS, with the ratio of interest placed in different spinal cord segments to measure levels of twelve metabolites including N-acetylaspartate (NAA), taurine (Tau), glutamate (Glu), gamma amino acid butyric acid (GABA), creatine (Cr), and myoinositol (MI), etc. Results: Rats with myocardial IR injury had higher concentration of Tau in the upper thoracic spinal cord (P < 0.05), and lower concentration of Gly and Glu in the cervical segment of the spinal cord (P < 0.05), when compared to the Control group. The ratios of glutamate/taurine (Glu/Tau), Glu/(GABA + Tau) and Glu/Total were significantly different between the IR group and the Control group in the upper thoracic spinal cord (P < 0.05). So were the ratios of Glu/(GABA + Tau) in the cervical segment (P < 0.05), and Glu/Tau and Glu/(GABA + Tau) in the lower thoracic spinal cord (P < 0.05). CONCLUSIONS These findings suggest that myocardial IR injury may be related to spinal biochemical alterations. It is speculated that these observed changes in the levels of spinal metabolites may be involved in the pathogenesis and regulation of myocardial IR injury.
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Affiliation(s)
- Qian Wang
- Department of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, PR China
| | - Zhi-Xiao Li
- Department of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, PR China
| | - Yu-Juan Li
- Department of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, PR China
| | - Anne Manyande
- School of Human and Social Sciences, University of West LondonLondon, UK
| | - Shun-Yuan Li
- Department of Anesthesiology, The First Affiliated Quanzhou Hospital of Fujian Medical UniversityQuanzhou 362000, PR China
| | - Mao-Hui Feng
- Department of Gastrointestinal Surgery, Zhongnan Hospital, Wuhan UniversityNo. 169 Donghu Road, Wuhan 430071, PR China
| | - Duo-Zhi Wu
- Department of Anesthesiology, People’s Hospital of Hainan ProvinceHaikou, Hainan, PR China
| | - Hong-Bing Xiang
- Department of Anesthesiology and Pain Medicine, Tongji Hospital of Tongji Medical College, Huazhong University of Science and TechnologyWuhan 430030, Hubei, PR China
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Buture A, Boland JW, Dikomitis L, Ahmed F. Update on the pathophysiology of cluster headache: imaging and neuropeptide studies. J Pain Res 2019; 12:269-281. [PMID: 30655693 PMCID: PMC6324919 DOI: 10.2147/jpr.s175312] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE Cluster headache (CH) is the most severe primary headache condition. Its pathophysiology is multifaceted and incompletely understood. This review brings together the latest neuroimaging and neuropeptide evidence on the pathophysiology of CH. METHODS A review of the literature was conducted by searching PubMed and Web of Science. The search was conducted using the following keywords: imaging studies, voxel-based morphometry, diffusion-tensor imaging, diffusion magnetic resonance imaging, tractography, connectivity, cerebral networks, neuromodulation, central modulation, deep brain stimulation, orexin-A, orexin-B, tract-based spatial statistics, single-photon emission computer tomography studies, positron-emission tomography, functional magnetic resonance imaging, magnetic resonance spectroscopy, trigeminovascular system, neuropeptides, calcitonin gene-related peptide, neurokinin A, substance P, nitric oxide synthase, pituitary adenylate cyclase-activating peptide, vasoactive intestinal peptide, neuropeptide Y, acetylcholine, noradrenaline, and ATP. "Cluster headache" was combined with each keyword for more relevant results. All irrelevant and duplicated records were excluded. Search dates were from October 1976 to May 2018. RESULTS Neuroimaging studies support the role of the hypothalamus in CH, as well as other brain areas involved in the pain matrix. Activation of the trigeminovascular system and the release of neuropeptides play an important role in CH pathophysiology. Among neuropeptides, calcitonin gene-related peptide, vasoactive intestinal peptide, and pituitary adenylate cyclase-activating peptide have been reported to be reliable biomarkers for CH attacks, though not specific for CH. Several other neuropeptides are involved in trigeminovascular activation, but the current evidence does not qualify them as reliable biomarkers in CH. CONCLUSION CH has a complex pathophysiology and the pain mechanism is not completely understood. Recent neuroimaging studies have provided insight into the functional and structural network bases of CH pathophysiology. Although there has been important progress in neuropeptide studies, a specific biomarker for CH is yet to be found.
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Affiliation(s)
- Alina Buture
- Department of Neurology, Hull Royal Infirmary, Hull, UK,
- Hull York Medical School, University of Hull, Hull, UK,
| | | | - Lisa Dikomitis
- School of Medicine and Institute of Primary Care and Health Sciences, Keele University, Newcastle, UK
| | - Fayyaz Ahmed
- Department of Neurology, Hull Royal Infirmary, Hull, UK,
- Hull York Medical School, University of Hull, Hull, UK,
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16
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Obermann M, Holle D, Nagel S. Functional Neuroimaging in Trigeminal Autonomic Cephalalgias. Ann Indian Acad Neurol 2018; 21:S51-S56. [PMID: 29720819 PMCID: PMC5909135 DOI: 10.4103/aian.aian_357_17] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Functional neuroimaging was able to identify key structures for the pathophysiology of trigeminal autonomic cephalalgias (TACs) including cluster headache, paroxysmal hemicrania, and short-lasting unilateral neuralgiform headache attacks with conjunctival injection and tearing or cranial autonomic features and hemicrania continua. The posterior hypothalamus was the structure most consistently depicted with functional imaging in different states of disease with and without pain. Network-oriented imaging techniques such as resting-state functional resonance imaging were able to show a broader involvement of human trigeminal pain processing in the underlying pathophysiological mechanisms of the different TACs, highlighting similarities between this distinct group of primary headache disorders, while also demonstrating the differences in brain activation across these disorders. The most important clinical assignment for neuroimaging research from the treating physician remains the objective and reliable distinction of each individual TAC syndrome from one another, to make the correct clinical diagnosis as the foundation for proper treatment. More research will be necessary to fulfill this unmet need.
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Affiliation(s)
- Mark Obermann
- Center for Neurology, Asklepios Hospitals Schildautal, Seesen, Germany.,Department of Neurology and Westgerman Headache Center, University of Duisburg-Essen, Essen, Germany
| | - Dagny Holle
- Department of Neurology and Westgerman Headache Center, University of Duisburg-Essen, Essen, Germany
| | - Steffen Nagel
- Department of Neurology and Westgerman Headache Center, University of Duisburg-Essen, Essen, Germany
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17
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Perrotta A, Coppola G, Anastasio MG, De Icco R, Ambrosini A, Serrao M, Parisi V, Evangelista M, Sandrini G, Pierelli F. Trait- and Frequency-Dependent Dysfunctional Habituation to Trigeminal Nociceptive Stimulation in Trigeminal Autonomic Cephalalgias. THE JOURNAL OF PAIN 2018; 19:1040-1048. [PMID: 29655843 DOI: 10.1016/j.jpain.2018.03.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 01/31/2018] [Accepted: 03/02/2018] [Indexed: 01/03/2023]
Abstract
We investigated whether the stimulation frequency (SF), the pain phases, and different diagnoses of trigeminal autonomic cephalalgias (TACs) may influence the habituation to pain. We studied the habituation of the nociceptive blink reflex R2 responses at different SFs (.05, .1, .2, .3, .5, and 1 Hz), in 28 episodic cluster headache (ECH) patients, 16 during and 12 outside the bout; they were compared with 16 episodic paroxysmal hemicrania (EPH) during the bout and 21 healthy subjects. We delivered 26 electrical stimuli and subdivided stimuli 2 to 26 in 5 blocks of 5 responses for each SF. Habituation values for each SF were expressed as the percentages of the mean area value of second through fifth blocks with respect to the first one. A significant lower mean percentage decrease of the R2 area across all blocks was found at .2 to 1 Hz SF during ECH, outside of the ECH, and EPH compared with healthy subjects. We showed a common frequency-dependent deficit of habituation of trigeminal nociceptive responses at higher SFs in ECH and EPH patients, independently from the disease phase. This abnormal temporal pattern of pain processing may suggest a trait-dependent dysfunction of some underlying pain-related subcortical structures, rather than a state-dependent functional abnormality due to the recurrence of the headache attacks during the active period. PERSPECTIVE TACs showed a frequency-related defective habituation of nociceptive trigeminal responses at the higher SFs, irrespectively of the diagnosis and/or the disease phase. We showed that the clinical similarities in the different subtypes of TACs are in parallel with a trait-dependent dysfunction in pain processing.
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Affiliation(s)
| | - Gianluca Coppola
- G.B. Bietti Foundation IRCCS, Research Unit of Neurophysiology of Vision and Neurophthalmology, Rome, Italy
| | - Maria Grazia Anastasio
- IRCCS Neuromed, Pozzilli, IS, Italy; Department of Neurology and Psychiatry, "Sapienza" University of Rome, Rome, Italy
| | - Roberto De Icco
- C. Mondino National Neurological Institute, Department of Brain and Behavioral Sciences, University of Pavia, Italy
| | | | - Mariano Serrao
- Unit of Neurorehabilitation, Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, ICOT, Latina, Italy
| | - Vincenzo Parisi
- G.B. Bietti Foundation IRCCS, Research Unit of Neurophysiology of Vision and Neurophthalmology, Rome, Italy
| | - Maurizio Evangelista
- Istituto di Anestesiologia, Rianimazione e Terapia del Dolore, Università Cattolica del Sacro Cuore/CIC, Rome, Italy
| | - Giorgio Sandrini
- C. Mondino National Neurological Institute, Department of Brain and Behavioral Sciences, University of Pavia, Italy
| | - Francesco Pierelli
- IRCCS Neuromed, Pozzilli, IS, Italy; Unit of Neurorehabilitation, Department of Medical-Surgical Sciences and Biotechnologies, Sapienza University of Rome, ICOT, Latina, Italy
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18
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Abstract
Cluster headache is an excruciating, strictly one-sided pain syndrome with attacks that last between 15 minutes and 180 minutes and that are accompanied by marked ipsilateral cranial autonomic symptoms, such as lacrimation and conjunctival injection. The pain is so severe that female patients describe each attack as worse than childbirth. The past decade has seen remarkable progress in the understanding of the pathophysiological background of cluster headache and has implicated the brain, particularly the hypothalamus, as the generator of both the pain and the autonomic symptoms. Anatomical connections between the hypothalamus and the trigeminovascular system, as well as the parasympathetic nervous system, have also been implicated in cluster headache pathophysiology. The diagnosis of cluster headache involves excluding other primary headaches and secondary headaches and is based primarily on the patient's symptoms. Remarkable progress has been achieved in developing effective treatment options for single cluster attacks and in developing preventive measures, which include pharmacological therapies and neuromodulation.
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Affiliation(s)
- Arne May
- Department of Systems Neuroscience, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, D-20246 Hamburg, Germany
| | | | - Delphine Magis
- University Department of Neurology CHR, CHU de Liege, Belgium
| | - Patricia Pozo-Rosich
- Headache and Craniofacial Pain Unit, Neurology Department, Hospital Universitari Vall d'Hebron, Barcelona, Spain.,Headache Research Group, VHIR, Universitat Autònoma Barcelona, Barcelona, Spain
| | - Stefan Evers
- Department of Neurology, Krankenhaus Lindenbrunn, Coppenbrügge, Germany
| | - Shuu-Jiun Wang
- Taipei Veterans General Hospital, National Yang-Ming University School of Medicine, Taipei, Taiwan
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19
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Niddam DM, Lai KL, Tsai SY, Lin YR, Chen WT, Fuh JL, Wang SJ. Neurochemical changes in the medial wall of the brain in chronic migraine. Brain 2017; 141:377-390. [DOI: 10.1093/brain/awx331] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 10/18/2017] [Indexed: 12/21/2022] Open
Affiliation(s)
- David M Niddam
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Kuan-Lin Lai
- Department of Neurology, The Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
- Institute of Clinical Medicine, School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Neurology, Taipei Municipal Gandau Hospital. Taipei, Taiwan
| | - Shang-Yueh Tsai
- Graduate Institute of Applied Physics, National Chengchi University, Taipei, Taiwan
- Research Center for Mind, Brain and Learning, National Chengchi University, Taipei, Taiwan
| | - Yi-Ru Lin
- Department of Electronic and Computer Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Wei-Ta Chen
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
- Institute of Brain Science, School of Medicine, National Yang-Ming University, Taipei, Taiwan
- Department of Neurology, The Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jong-Ling Fuh
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
- Department of Neurology, The Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
| | - Shuu-Jiun Wang
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan
- Department of Neurology, The Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taipei, Taiwan
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20
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Barloese MCJ. The pathophysiology of the trigeminal autonomic cephalalgias, with clinical implications. Clin Auton Res 2017; 28:315-324. [DOI: 10.1007/s10286-017-0468-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2017] [Accepted: 09/11/2017] [Indexed: 01/03/2023]
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21
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Yang FC, Chou KH, Kuo CY, Lin YY, Lin CP, Wang SJ. The pathophysiology of episodic cluster headache: Insights from recent neuroimaging research. Cephalalgia 2017; 38:970-983. [DOI: 10.1177/0333102417716932] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Background Cluster headache is a disorder characterized by intermittent, severe unilateral head pain accompanied by cranial autonomic symptoms. Most cases of CH are episodic, manifesting as “in-bout” periods of frequent headache separated by month-to-year-long “out-of-bout” periods of remission. Previous imaging studies have implicated the hypothalamus and pain matrix in the pathogenesis of episodic CH. However, the pathophysiology driving the transition between in- and out-of-bout periods remains unclear. Methods The present study provides a narrative review of previous neuroimaging studies on the pathophysiology of episodic CH, addressing alterations in brain structures, metabolism, and structural and functional connectivity occurring between bout periods. Results Although the precise brain structures responsible for episodic CH are unknown, major roles are indicated for the posterior hypothalamus (especially in acute attacks), the pain neuromatrix with an emphasis on central descending pain modulation, and non-traditional pain processing networks including the occipital, cerebellar, and salience networks. These areas are potentially related to dynamic transitioning between in- and out-of-bout periods. Conclusion Recent progress in magnetic resonance imaging of episodic CH has provided additional insights into dynamic bout-associated structural and functional connectivity changes in the brain, especially in non-traditional pain processing network areas. These areas warrant future investigations as targets for neuromodulation in patients with CH.
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Affiliation(s)
- Fu-Chi Yang
- Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taiwan
| | - Kun-Hsien Chou
- Brain Research Center, National Yang-Ming University, Taiwan
- Institute of Neuroscience, National Yang-Ming University, Taiwan
| | - Chen-Yuan Kuo
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taiwan
| | - Yung-Yang Lin
- Brain Research Center, National Yang-Ming University, Taiwan
- Institute of Brain Science, National Yang-Ming University, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taiwan
- Neurological Institute, Taipei Veterans General Hospital, Taiwan
| | - Ching-Po Lin
- Brain Research Center, National Yang-Ming University, Taiwan
- Institute of Neuroscience, National Yang-Ming University, Taiwan
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taiwan
- Institute of Brain Science, National Yang-Ming University, Taiwan
| | - Shuu-Jiun Wang
- Brain Research Center, National Yang-Ming University, Taiwan
- Institute of Brain Science, National Yang-Ming University, Taiwan
- Faculty of Medicine, National Yang-Ming University School of Medicine, Taiwan
- Neurological Institute, Taipei Veterans General Hospital, Taiwan
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23
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Sprenger T, Ruether KV, Boecker H, Valet M, Berthele A, Pfaffenrath V, Wöller A, Tölle TR. Altered Metabolism in Frontal Brain Circuits in Cluster Headache. Cephalalgia 2016; 27:1033-42. [PMID: 17666083 DOI: 10.1111/j.1468-2982.2007.01386.x] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Neuroimaging studies have explored cerebral activation patterns in patients with cluster headache (CH) during attacks and have revealed activation of multiple brain areas known to belong to the general pain-processing network. However, it is still unclear which changes in brain metabolism are inherent to the shift from the ‘in bout’ to the ‘out of bout’ period. We measured cerebral glucose metabolism in 11 episodic CH patients during the cluster and again during the remission period with 18F-fluoro-2-deoxy-D-glucose-positron emission tomography (FDG-PET) and compared these data with 11 healthy controls. ‘In bout’ compared with ‘out of bout’ scans were associated with increases of metabolism in the perigenual anterior cingulate cortex (ACC), posterior cingulate cortex, prefrontal cortex, insula, thalamus and temporal cortex. Decreases in metabolism were observed in the cerebellopontine area. Compared with healthy volunteers, hypometabolism in the patient group (‘in bout’ and ‘out of bout’) was found in the perigenual ACC, prefrontal and orbitofrontal cortex. Thus, FDG-PET in CH patients revealed ‘in bout’ activation of brain structures which are involved in descending pain control. Compared with controls, the regional brain metabolism was constitutively decreased in most of these structures, irrespective of the bout. This finding indicates a deficient top-down modulation of antinociceptive circuits in CH patients. We suggest that trigger mechanisms of CH are insufficiently controlled and thus promote the initiation of the bout period and acute attack.
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Affiliation(s)
- T Sprenger
- Department of Neurology, Klinikum rechts der Isaar, Technische Universität München, Munich, Germany.
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24
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Li TQ, Wang Y, Hallin R, Juto JE. Resting-state fMRI study of acute migraine treatment with kinetic oscillation stimulation in nasal cavity. NEUROIMAGE-CLINICAL 2016; 12:451-9. [PMID: 27622142 PMCID: PMC5008046 DOI: 10.1016/j.nicl.2016.08.014] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Revised: 07/22/2016] [Accepted: 08/13/2016] [Indexed: 12/17/2022]
Abstract
Kinetic oscillatory stimulation (KOS) in the nasal cavity is a non-invasive cranial nerve stimulation method with promising efficacy for acute migraine and other inflammatory disorders. For a better understanding of the underlying neurophysiological mechanisms of KOS treatment, we conducted a resting-state functional magnetic resonance imaging (fMRI) study of 10 acute migraine patients and 10 normal control subjects during KOS treatment in a 3 T clinical MRI scanner. The fMRI data were first processed using a group independent component analysis (ICA) method and then further analyzed with a voxel-wise 3-way ANOVA modeling and region of interest (ROI) of functional connectivity metrics. All migraine participants were relieved from their acute migraine symptoms after 10–20 min KOS treatment and remained migraine free for 3–6 months. The resting-state fMRI result indicates that migraine patients have altered intrinsic functional activity in the anterior cingulate, inferior frontal gyrus and middle/superior temporal gyrus. KOS treatment gave rise to up-regulated intrinsic functional activity for migraine patients in a number of brain regions involving the limbic and primary sensory systems, while down regulating temporally the activity for normal controls in a few brain areas, such as the right dorsal posterior insula and inferior frontal gyrus. The result of this study confirms the efficacy of KOS treatment for relieving acute migraine symptoms and reducing attack frequency. Resting-state fMRI measurements demonstrate that migraine is associated with aberrant intrinsic functional activity in the limbic and primary sensory systems. KOS in the nasal cavity gives rise to the adjustment of the intrinsic functional activity in the limbic and primary sensory networks and restores the physiological homeostasis in the autonomic nervous system. Efficacy and neurological mechanisms underlying kinetic oscillatory stimulation treatment of migraine Dependence of ICA (independent component analysis) results on the number of independent components. Modulation of ANS (autonomic nervous system) function via the limbic network
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Affiliation(s)
- Tie-Qiang Li
- Department of Medical Physics, Karolinska University Hospital Huddinge, Sweden; Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
| | - Yanlu Wang
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
| | - Rolf Hallin
- Department of Physiology and Pharmacology, Division of Clinical Neurophysiology, Karolinska University Hospital, Huddinge, Sweden
| | - Jan-Erik Juto
- Department of Clinical Science, Intervention and Technology, Karolinska Institute, Stockholm, Sweden
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25
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Becerra L, Veggeberg R, Prescot A, Jensen JE, Renshaw P, Scrivani S, Spierings ELH, Burstein R, Borsook D. A 'complex' of brain metabolites distinguish altered chemistry in the cingulate cortex of episodic migraine patients. NEUROIMAGE-CLINICAL 2016; 11:588-594. [PMID: 27158591 PMCID: PMC4846856 DOI: 10.1016/j.nicl.2016.03.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Revised: 03/14/2016] [Accepted: 03/28/2016] [Indexed: 12/22/2022]
Abstract
Despite the prevalence of migraine, the pathophysiology of the disease remains unclear. Current understanding of migraine has alluded to the possibility of a hyperexcitable brain. The aim of the current study is to investigate human brain metabolite differences in the anterior cingulate cortex (ACC) during the interictal phase in migraine patients. We hypothesized that there may be differences in levels of excitatory neurotransmitters and/or their derivatives in the migraine cohort in support of the theory of hyperexcitability in migraine. 2D J-resolved proton magnetic resonance spectroscopy (1H-MRS) data were acquired on a 3 Tesla (3 T) MRI from a voxel placed over the ACC of 32 migraine patients (MP; 23 females, 9 males, age 33 ± 9.6 years) and 33 healthy controls (HC; 25 females, 8 males, age 32 ± 9.6 years). Amplitude correlation matrices were constructed for each subject to evaluate metabolite discriminability. ProFit-estimated metabolite peak areas were normalized to a water reference signal to assess subject differences. The initial analysis of variance (ANOVA) was performed to test for group differences for all metabolites/creatine (Cre) ratios between healthy controls and migraineurs but showed no statistically significant differences. In addition, we used a multivariate approach to distinguish migraineurs from healthy subjects based on the metabolite/Cre ratio. A quadratic discriminant analysis (QDA) model was used to identify 3 metabolite ratios sufficient to minimize minimum classification error (MCE). The 3 selected metabolite ratios were aspartate (Asp)/Cre, N-acetyl aspartate (NAA)/Cre, and glutamine (Gln)/Cre. These findings are in support of a ‘complex’ of metabolite alterations, which may underlie changes in neuronal chemistry in the migraine brain. Furthermore, the parallel changes in the three-metabolite ‘complex’ may confer more subtle but biological processes that are ongoing. The data also support the current theory that the migraine brain is hyperexcitable even in the interictal state. 3 T MRI was used to acquire 2D J-resolved proton magnetic resonance spectroscopy. Metabolite alterations are reported in the anterior cingulate cortex of episodic migraineurs. The complex of metabolites may reflect multiple chemical changes in migraineurs. The observed chemical changes support the theory that the brain of migraineurs is hyperexcitable.
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Affiliation(s)
- L Becerra
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia Critical Care and Pain Medicine, Boston Children's Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, MA, USA; Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, USA; Departments of Psychiatry and Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02114, USA
| | - R Veggeberg
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia Critical Care and Pain Medicine, Boston Children's Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, MA, USA; Brain Imaging Center, McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - A Prescot
- Department of Radiology, University of Utah, School of Medicine, Salt Lake City, UT, USA; VISN 19 MIRECC, Salt Lake City, UT, USA
| | - J E Jensen
- Brain Imaging Center, McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - P Renshaw
- Department of Psychiatry, University of Utah, Salt Lake City, UT, USA; VISN 19 MIRECC, Salt Lake City, UT, USA
| | - S Scrivani
- Department of Oral and Maxillofacial Surgery, Massachusetts General Hospital, Boston, MA, USA
| | - E L H Spierings
- Department of Neurology, Tufts Medical Center, Boston, MA, USA
| | - R Burstein
- Anesthesia and Critical Care, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA, USA
| | - D Borsook
- Pain/Analgesia Imaging Neuroscience (P.A.I.N.) Group, Department of Anesthesia Critical Care and Pain Medicine, Boston Children's Hospital, Center for Pain and the Brain, Harvard Medical School, Waltham, MA, USA; Departments of Psychiatry and Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02114, USA; Brain Imaging Center, McLean Hospital, Harvard Medical School, Belmont, MA, USA.
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26
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Abstract
Patients with cluster headaches occasionally fail to respond to conventional preventive treatments. We herein report a case of a patient with a cluster headache in which the symptoms were refractory to conventional preventive treatments except for high-dose glucocorticoids. The headache attacks occurred daily while sleeping, thus the patient suffered from insomnia. Ramelteon, a selective melatonin receptor agonist and a member of a new class of insomnia therapies, completely suppressed the attacks during sleep and provided rapid relief from insomnia. This is the first English case report to describe the efficacy of ramelteon as a preventive treatment for cluster headaches.
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Affiliation(s)
- Noboru Imai
- Department of Neurology, Japanese Red Cross Shizuoka Hospital, Japan
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27
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Napadow V, Harris RE. What has functional connectivity and chemical neuroimaging in fibromyalgia taught us about the mechanisms and management of 'centralized' pain? Arthritis Res Ther 2015; 16:425. [PMID: 25606591 PMCID: PMC4289059 DOI: 10.1186/s13075-014-0425-0] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Research suggests that fibromyalgia is a central, widespread pain syndrome supported by a generalized disturbance in central nervous system pain processing. Over the past decades, multiple lines of research have identified the locus for many functional, chronic pain disorders to the central nervous system, and the brain. In recent years, brain neuroimaging techniques have heralded a revolution in our understanding of chronic pain, as they have allowed researchers to non-invasively (or minimally invasively) evaluate human patients suffering from various pain disorders. While many neuroimaging techniques have been developed, growing interest in two specific imaging modalities has led to significant contributions to chronic pain research. For instance, resting functional connectivity magnetic resonance imaging (fcMRI) is a recent adaptation of fMRI that examines intrinsic brain connectivity - defined as synchronous oscillations of the fMRI signal that occurs in the resting basal state. Proton magnetic resonance spectroscopy (1H-MRS) is a non-invasive magnetic resonance imaging technique that can quantify the concentration of multiple metabolites within the human brain. This review will outline recent applications of the complementary imaging techniques - fcMRI and 1H-MRS - to improve our understanding of fibromyalgia pathophysiology and how pharmacological and non-pharmacological therapies contribute to analgesia in these patients. A better understanding of the brain in chronic pain, with specific linkage as to which neural processes relate to spontaneous pain perception and hyperalgesia, will greatly improve our ability to develop novel therapeutics. Neuroimaging will play a growing role in the translational research approaches needed to make this a reality.
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Affiliation(s)
- Vitaly Napadow
- Athinoula A Martinos Center for Biomedical Imaging, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA 02129, USA
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28
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Abstract
Cluster headache is a rare primary headache disorder and the most common trigeminal-autonomic cephalalgia. Even though it has been extensively studied, its pathophysiology remains nebulous. Over the last two decades, cerebral imaging has increasingly been used to aid the investigation of pain and headache disorders. Pioneering work using magnetic resonance-based, voxel-based morphometry depicted an isolated increase of grey matter in the posterior hypothalamus and thereby reconfirmed the most commonly accepted pathophysiological concept. More recent works demonstrate structural changes across multiple structures related to pain processing, sensory integration, and emotional evaluation. These changes do not seem to be static, but rather appear to be dynamic in nature as they change over the course of the disease. This was interpreted as a reflection of the plasticity of the human brain and should guide future thoughts towards a more complex pathophysiological model involving a maladaptive pain modulatory network.
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Affiliation(s)
- Steffen Naegel
- Department of Neurology, University of Duisburg-Essen, Hufelandstr. 55, 45122, Essen, Germany,
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29
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Wang R, Dong Z, Chen X, Liu R, Zhang M, Wu J, Yu S. Cognitive processing of cluster headache patients: evidence from event-related potentials. J Headache Pain 2014; 15:66. [PMID: 25277954 PMCID: PMC4194445 DOI: 10.1186/1129-2377-15-66] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 09/15/2014] [Indexed: 11/17/2022] Open
Abstract
BACKGROUND The peripheral and central origins of pain in cluster headache (CH) have been a matter of much debate. The development and application of functional imaging techniques have provided more evidence supporting the hypothesis that CH is not a disorder exclusively peripheral in origin, and in fact central regions might be more important. Event-related potentials confer advantages in the functional evaluation of the cortex, but few studies thus far have employed this method in cluster headache. METHODS Seventeen cluster patients (15 males; mean age = 35.4 years) and 15 age-matched healthy participants (13 males; mean age = 34.6 years) were recruited. A visual oddball paradigm was employed to analyze target processing using event-related potentials. We investigated the P3/P3d components in the experiment. RESULTS P3/P3d amplitudes were decreased in CH patients (P3, 3.82 μV; P3d, 5.8 μV) compared with controls (P3, 7.28 μV; P3d, 8.95 μV), F(1,30) = 4.919, p < 0.05, η2 = 0.141 for P3 and F(1,30) = 8.514, p < 0.05, η2 = 0.221 for P3d, respectively). Moreover, the amplitudes of P3/P3d were no significantl difference in the side of pain as compared to contralateral one (p > 0.05). CONCLUSIONS These results provide evidence of dysfunction in the cognitive processing of CH patients, which may also contribute to the pathophysiology of CH.
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Affiliation(s)
- Rongfei Wang
- Department of Neurology, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Zhao Dong
- Department of Neurology, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Xiaoyan Chen
- Department of Neurology, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Ruozhuo Liu
- Department of Neurology, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
| | - Mingjie Zhang
- Department of Neurology, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
- Medical school, Nankai University, Tianjin, China
| | - Jinglong Wu
- Biomedical Engineering Laboratory, Graduate School of Natural Science and Technology, Okayama University, 3-1-1 Tsushima-Naka, Okayama 700-8530, Japan
| | - Shengyuan Yu
- Department of Neurology, Chinese PLA General Hospital, Fuxing Road 28, Haidian District, Beijing 100853, China
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Wang Y, Li D, Bao F, Ma S, Guo C, Jin C, Zhang M. Thalamic metabolic alterations with cognitive dysfunction in idiopathic trigeminal neuralgia: a multivoxel spectroscopy study. Neuroradiology 2014; 56:685-93. [PMID: 24820951 DOI: 10.1007/s00234-014-1376-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 05/01/2014] [Indexed: 11/26/2022]
Abstract
INTRODUCTION Although abnormalities in metabolite compositions in the thalamus are well described in patients with idiopathic trigeminal neuralgia (ITN), differences in distinct thalamic subregions have not been measured with proton magnetic resonance spectroscopy ((1)H-MRS), and whether there are correlations between thalamic metabolites and cognitive function still remain unknown. METHODS Multivoxel MRS was recorded to investigate the metabolic alterations in the thalamic subregions of patients with ITN. The regions of interest were localized in the anterior thalamus (A-Th), intralaminar portion of the thalamus (IL-Th), posterior lateral thalamus (PL-Th), posterior medial thalamus (PM-Th), and medial and lateral pulvinar of the thalamus (PuM-Th and PuL-Th). The N-acetylaspartate to creatine (NAA/Cr) and choline to creatine (Cho/Cr) ratios were measured in the ITN and control groups. Scores of the visual analogue scale (VAS) and the Montreal Cognitive Assessment (MoCA) were analyzed to correlate with the neuroradiological findings. RESULTS The NAA/Cr ratio in the affected side of PM-Th and PL-Th in ITN patients was statistically lower than that in the corresponding regions of the thalamus in controls. The NAA/Cr ratio in the affected PM-Th was negatively associated with VAS and disease duration. Furthermore, decreases of NAA/Cr and Cho/Cr were detected in the affected side of IL-Th, and lower Cho/Cr was positively correlated with MoCA values in the ITN group. CONCLUSIONS Our result of low level of NAA/Cr in the affected PM-Th probably serves as a marker of the pain-rating index, and decreased Cho/Cr in IL-Th may be an indicator of cognitive disorder in patients with ITN.
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Affiliation(s)
- Yuan Wang
- Department of Medical Imaging, First Affiliated Hospital of Xi'an Jiaotong University, No. 277, West Yanta Road, Xi'an, Shaanxi, 710061, People's Republic of China
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Chou KH, Yang FC, Fuh JL, Huang CC, Lirng JF, Lin YY, Lee PL, Kao HW, Lin CP, Wang SJ. Altered white matter microstructural connectivity in cluster headaches: a longitudinal diffusion tensor imaging study. Cephalalgia 2014; 34:1040-52. [PMID: 24668118 DOI: 10.1177/0333102414527649] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Functional and structural disruptions to the pain matrix, which may involve changes in white matter (WM) pathways connecting the pain-processing system and hypothalamus, have been implicated in the pathophysiology of cluster headache (CH). However, previous studies have obtained inconclusive results regarding WM changes in CH, and WM variations between "in-bout" and "out-of-bout" periods of CH remain to be determined. METHODS Multiple diffusivity indices obtained by diffusion tensor imaging (DTI) and post-hoc probabilistic tractography were used to elucidate CH pathophysiology. RESULTS Compared to healthy participants, in-bout CH patients showed regionally higher absolute (radial and mean) diffusivities in the left medial frontal gyrus and frontal sub-gyrus and lower absolute (axial, radial and mean) diffusivities in the right parahippocampal gyrus of the limbic lobe. These changes during the in-bout period generally persisted in the out-of-bout period, except for the left cerebellar tonsil. Post-hoc probabilistic tractography showed highly consistent anatomical connections between these altered areas and the hypothalamus across participants. CONCLUSIONS Distinct WM changes were observed in episodic CH. Connections between the pain-modulation areas and hypothalamus may be involved in CH pathophysiology.
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Affiliation(s)
- Kun-Hsien Chou
- Institute of Neuroscience, National Yang-Ming University, Taiwan Brain Research Center, National Yang-Ming University, Taiwan
| | - Fu-Chi Yang
- Institute of Brain Science, National Yang-Ming University, Taiwan Department of Neurology, Tri-Service General Hospital, National Defense Medical Center, Taiwan
| | - Jong-Ling Fuh
- Department of Neurology, National Yang-Ming University, Taiwan Department of Neurology, Taipei Veterans General Hospital, Taiwan
| | - Chu-Chung Huang
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taiwan
| | - Jiing-Feng Lirng
- Department of Radiology, National Yang-Ming University, Taiwan Department of Radiology, Taipei, Veterans General Hospital, Taiwan
| | - Yung-Yang Lin
- Brain Research Center, National Yang-Ming University, Taiwan Institute of Brain Science, National Yang-Ming University, Taiwan Department of Neurology, National Yang-Ming University, Taiwan Department of Neurology, Taipei Veterans General Hospital, Taiwan
| | - Pei-Lin Lee
- Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taiwan
| | - Hung-Wen Kao
- Department of Radiology, Tri-Service General Hospital, National Defense Medical Center, Taiwan
| | - Ching-Po Lin
- Institute of Neuroscience, National Yang-Ming University, Taiwan Brain Research Center, National Yang-Ming University, Taiwan Institute of Brain Science, National Yang-Ming University, Taiwan Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taiwan
| | - Shuu-Jiun Wang
- Brain Research Center, National Yang-Ming University, Taiwan Institute of Brain Science, National Yang-Ming University, Taiwan Department of Neurology, National Yang-Ming University, Taiwan Department of Neurology, Taipei Veterans General Hospital, Taiwan
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Holle D, Obermann M. Cluster headache and the hypothalamus: causal relationship or epiphenomenon? Expert Rev Neurother 2014; 11:1255-63. [DOI: 10.1586/ern.11.115] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Shimazu T. [Recent pathophysiology of cluster headache (trigeminal autonomic cephalalgias; TACs)]. Rinsho Shinkeigaku 2013; 53:1125-7. [PMID: 24291901 DOI: 10.5692/clinicalneurol.53.1125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Cluster headache (CH), known as one of the trigeminal autonomic cephalalgias, is a stereotyped primary pain syndrome characterized by unilateral severe pain, the pathophysiology of which are not well understood. PATHOPHYSIOLOGY The underlying pathophysiology of CH is incompletely understood. The periodicity of the attacks suggests the involvement of a biologic clock within the hypothalamus which controls circadian rhythms, with central disinhibition of the nociceptive and autonomic pathways, the trigeminal nociceptive pathways. Positron emission tomography and voxel-based morphometry have identified the posterior hypothalamic gray matter as the key area for the basic defect in CH. Functional hypothalamic dysfunction has been confirmed by abnormal metabolism based on the N-acetylaspartate neuronal marker in magnetic resonance spectroscopy. A recent case study demonstrated the release of both trigeminal and parasympathetic neuropeptides during a bout of pain in the same pattern previously described in CH. It is hypothesis that trigeminal activation leads to reflex autonomic activation. At a clinical level, there should be a pain threshold above which autonomic symptoms occur, modified by the highly somato- topic and functionally organized central connections of the trigeminovascular system.
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Abstract
Understanding the pathophysiology and pharmacology of migraine has been driven by astute clinical observations, elegant experimental medicine studies, and importantly by studying highly effective anti-migraine agents in the laboratory and the clinic. Significant progress has been made in the use of functional brain imaging to compliment observational studies of migraine phenotypes by highlighting pathways within the brain that may be involved in predisposition to migraine, modulating migraine pain or that could be sensitive to pharmacological or behavioral therapeutic intervention. In drug discovery, molecular imaging approaches compliment functional neuroimaging by visualizing migraine drug targets within the brain. Molecular imaging enables the selection and evaluation of drug candidates by confirming that they engage their targets sufficiently at well tolerated doses to test our therapeutic hypotheses. Migraine is a progressive disorder. Developing our knowledge of where drugs act in the brain and of how the brain is altered in both episodic migraine (interictal state and ictal state) and chronic migraine are important steps to understanding why there is such differential responsiveness to therapeutics among migraine patients and to improving how they are evaluated and treated.
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Affiliation(s)
- David Borsook
- From P.a.i.n. Group, Massachusetts General Hospital, Boston, MA, USA
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Qiu E, Wang Y, Ma L, Tian L, Liu R, Dong Z, Xu X, Zou Z, Yu S. Abnormal brain functional connectivity of the hypothalamus in cluster headaches. PLoS One 2013; 8:e57896. [PMID: 23460913 PMCID: PMC3584052 DOI: 10.1371/journal.pone.0057896] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Accepted: 01/28/2013] [Indexed: 11/19/2022] Open
Abstract
The aim of this study was to detect the abnormality of the brain functional connectivity of the hypothalamus during acute spontaneous cluster headache (CH) attacks ('in attack') and headache-free intervals ('out of attack') using resting-state functional magnetic resonance imaging (RS-fMRI) technique. The RS-fMRI data from twelve male CH patients during 'in attack' and 'out of attack' periods and twelve age- and sex-matched normal controls were analyzed by the region-of-interest -based functional connectivity method using SPM5 software. Abnormal brain functional connectivity of the hypothalamus is present in CH, which is located mainly in the pain system during the spontaneous CH attacks. It extends beyond the pain system during CH attack intervals.
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Affiliation(s)
- Enchao Qiu
- Department of Neurology, Chinese PLA General Hospital, Beijing, People's Republic of China
- Department of Neurology, The First Affiliated Hospital of Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Yan Wang
- Department of Radiology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Lin Ma
- Department of Radiology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Lixia Tian
- Department of Biomedical Engineering, School of Computer and Information Technology, Beijing Jiaotong University, Beijing, People's Republic of China
| | - Ruozhuo Liu
- Department of Neurology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Zhao Dong
- Department of Neurology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Xian Xu
- Department of Radiology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Zhitong Zou
- Department of Radiology, Chinese PLA General Hospital, Beijing, People's Republic of China
| | - Shengyuan Yu
- Department of Neurology, Chinese PLA General Hospital, Beijing, People's Republic of China
- * E-mail:
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Lai TH, Fuh JL, Lirng JF, Lin CP, Wang SJ. Brainstem 1H-MR spectroscopy in episodic and chronic migraine. J Headache Pain 2012; 13:645-51. [PMID: 23070401 PMCID: PMC3484255 DOI: 10.1007/s10194-012-0491-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2012] [Accepted: 10/07/2012] [Indexed: 11/30/2022] Open
Abstract
The pathogenesis of evolution from episodic migraine (EM) to chronic migraine (CM) has not yet been clearly determined. Some studies revealed that dysfunction of the brainstem may play a role. We aimed to determine the brainstem 1H-MR spectroscopic (MRS) findings in episodic and chronic migraine. We recruited patients with EM, CM and controls. Patients with CM were divided into subgroups with and without medication overuse (MO). The 1H-MRS metabolite ratios at the periaqueductal gray (PAG) and bilateral dorsal pons were measured and compared with those in controls. A total of 19 patients with EM, 53 patients with CM (with MO n = 30, without MO n = 23) and 16 control subjects completed the study. Patients with EM had the highest N-acetylaspartate (NAA)/creatine (Cr) ratio at the dorsal pons (right, P = 0.014; left, P = 0.034) in comparison with those of CM and controls. The latter two groups did not differ. Among migraine patients, NAA/Cr ratios at dorsal pons were inversely correlated with headache frequency (right, r = −0.350, P = 0.004; left, r = −0.284, P = 0.019) and intensity (right, r = −0.286, P = 0.019; left, r = −0.244, P = 0.045), but not disease duration. In contrast, the metabolite ratios did not differ at the PAG among the study groups. Of note, MO was not associated with brainstem MRS ratios in patients with CM. The increased NAA/Cr levels may suggest neuronal hypertrophy at the dorsal pons in EM. A progressive dysfunction of this region may occur from EM to CM since the levels declined with increasing headache frequency and intensity.
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Affiliation(s)
- Tzu-Hsien Lai
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
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Reyngoudt H, Achten E, Paemeleire K. Magnetic resonance spectroscopy in migraine: what have we learned so far? Cephalalgia 2012; 32:845-59. [PMID: 22763498 DOI: 10.1177/0333102412452048] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE To summarize and evaluate proton ((1)H) and phosphorus ((31)P) magnetic resonance spectroscopy (MRS) findings in migraine. METHODS A thorough review of (1)H and/or (31)P-MRS studies in any form of migraine published up to September 2011. RESULTS Some findings were consistent in all studies, such as a lack of ictal/interictal brain pH change and a disturbed energy metabolism, the latter of which is reflected in a drop in phosphocreatine content, both in the resting brain and in muscle following exercise. In a recent interictal study ATP was found to be significantly decreased in the occipital lobe of migraine with aura patients, reinforcing the concept of a mitochondrial component to the migraine threshold, at least in a subgroup of patients. In several studies a correlation between the extent of the energy disturbance and the clinical phenotype severity was apparent. Less consistent but still congruent with a disturbed energy metabolism is an observed lactate increase in the occipital cortex of several migraine subtypes (MwA, migraine with prolonged aura). No increases in brain glutamate levels were found. CONCLUSION The combined abnormalities found in MRS studies imply a mitochondrial component in migraine neurobiology. This could be due to a primary mitochondrial dysfunction or be secondary to, for example, alterations in brain excitability. The extent of variation in the data can be attributed to both the variable clinical inclusion criteria used and the variation in applied methodology. Therefore it is necessary to continue to optimize MRS methodology to gain further insights, especially concerning lactate and glutamate.
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Leone M, Proietti Cecchini A, Franzini A, Messina G, Bussone G. From neuroimaging to patients’ bench: what we have learnt from trigemino-autonomic pain syndromes. Neurol Sci 2012; 33 Suppl 1:S99-102. [DOI: 10.1007/s10072-012-1051-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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Harris RE, Clauw DJ. Imaging central neurochemical alterations in chronic pain with proton magnetic resonance spectroscopy. Neurosci Lett 2012; 520:192-6. [PMID: 22445845 DOI: 10.1016/j.neulet.2012.03.042] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2011] [Revised: 03/13/2012] [Accepted: 03/14/2012] [Indexed: 12/16/2022]
Abstract
Proton magnetic resonance spectroscopy has been used extensively in the study of various neurobiological disorders: depression, schizophrenia, autism, etc. But its application to chronic pain is relatively new. Not many studies in chronic pain have used (1)H-MRS. The unique ability of (1)H-MRS to assess both static and dynamic levels of glutamate and γ-aminobutyric acid (GABA) gives this method a unique position in neuroscience. Emerging evidence in chronic pain suggests an elevated excitatory/inhibitory neurotransmitter ratio is present within brain regions involved in pain processing. The combination of (1)H-MRS imaging with pharmacologic interventions holds significant promise as a direct one-to-one matching of disease pathology with drug mechanism of action can be made. As such (1)H-MRS may be useful in discovery of novel compounds for chronic pain. Research in these areas may lead to improved diagnosis and treatment of these complex patients.
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Affiliation(s)
- Richard E Harris
- University of Michigan, Department of Anesthesiology, 24 Frank Lloyd Wright Drive, P.O. Box 385, Lobby M, Ann Arbor, MI 48106, United States.
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Iacovelli E, Coppola G, Tinelli E, Pierelli F, Bianco F. Neuroimaging in cluster headache and other trigeminal autonomic cephalalgias. J Headache Pain 2011; 13:11-20. [PMID: 22116532 PMCID: PMC3253152 DOI: 10.1007/s10194-011-0403-8] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2011] [Accepted: 11/04/2011] [Indexed: 11/26/2022] Open
Abstract
The central nervous system mechanisms involved in trigeminal autonomic cephalalgias, a group of primary headaches characterized by strictly unilateral head pain that occurs in association with ipsilateral craniofacial autonomic features, are still not comprehensively understood. However, functional imaging methods have revolutionized our understanding of mechanisms involved in these primary headache syndromes. The present review provides a brief overview of the major modern functional neuroimaging techniques used to examine brain structure, biochemistry, metabolic state, and functional capacity. The available functional neuroimaging data in cluster headache and other TACs will thus be summarized. Although the precise brain structures responsible for these primary headache syndromes still remain to be determined, neuroimaging data suggest a major role for posterior hypothalamus activation in initiating and maintaining attacks. Furthermore, pathophysiological involvement of the pain neuromatrix and of the central descending opiatergic pain control system was observed. Given the rapid advances in functional and structural neuroimaging methodologies, it can be expected that these non-invasive techniques will continue to improve our understanding into the nature of the brain dysfunction in cluster headache and other trigeminal autonomic cephalalgias.
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Affiliation(s)
- Elisa Iacovelli
- Neurology Section, Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, Viale dell'Università 30, 00185, Rome, Italy.
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Leone M, Franzini A, Cecchini AP, Broggi G, Bussone G. Hypothalamic deep brain stimulation in the treatment of chronic cluster headache. Ther Adv Neurol Disord 2011; 3:187-95. [PMID: 21179610 DOI: 10.1177/1756285610370722] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Cluster headache (CH) is a short-lasting unilateral headache associated with ipsilateral craniofacial autonomic manifestations. A positron emission tomography (PET) study has shown that the posterior hypothalamus is activated during CH attacks, suggesting that hypothalamic hyperactivity plays a key role in CH pathophysiology. On this basis, stimulation of the ipsilateral posterior hypothalamus was hypothesized to counteract such hyperactivity to prevent intractable CH. Ten years after its introduction, hypothalamic stimulation has been proved to successfully prevent attacks in more than 60% of 58 hypothalamic implanted drug-resistant chronic CH patients. The implantation procedure has generally been proved to be safe, although it carries a small risk of brain haemorrhage. Long-term stimulation is safe, and nonsymptomatic impairment of orthostatic adaptation is the only noteworthy change. Microrecording studies will make it possible to better identify the target site. Neuroimaging investigations have shown that hypothalamic stimulation activates ipsilateral trigeminal complex, but with no immediate perceived sensation within the trigeminal distribution. Other studies on the pain threshold in chronically stimulated patients showed increased threshold for cold pain in the distribution of the first trigeminal branch ipsilateral to stimulation. These studies suggest that activation of the hypothalamus and of the trigeminal system are both necessary, but not sufficient to generate CH attacks. In addition to the hypothalamus, other unknown brain areas are likely to play a role in the pathophysiology of this illness. Hypothalamus implantation is associated with a small risk of intracerebral haemorrhage and must be performed by an expert neurosurgical team, in selected patients.
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Affiliation(s)
- Massimo Leone
- Headache Centre, Neuromodulation and Neurological Department, Fondazione Istituto Neurologico Carlo Besta, via Celoria 11, 20133 Milano, Italy.
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Abstract
This article covers the remarkable recent decades as clinicians and scientists have grappled with understanding headache. It is a challenge to understand how a 'normal' brain can become dysfunctional, incapacitating an individual, and then become 'normal' again. Does the answer lie in the anatomy, electrical pathways, the chemistry or a combination? How do the pieces fit together? The components are analyzed in this article. Animal models have provided potential answers. However, these processes have never been proven in man. The dynamic imaging of pain and headache is rapidly evolving and providing new insights and directions of research.
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Niddam DM, Tsai SY, Lu CL, Ko CW, Hsieh JC. Reduced hippocampal glutamate-glutamine levels in irritable bowel syndrome: preliminary findings using magnetic resonance spectroscopy. Am J Gastroenterol 2011; 106:1503-11. [PMID: 21502999 DOI: 10.1038/ajg.2011.120] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES Enhanced stress responsiveness is an important pathophysiological factor in irritable bowel syndrome (IBS), suggesting the presence of a dysregulated hypothalamic-pituitary-adrenal (HPA) axis. A possible mechanism involves maladaption of the feedback mechanism of the HPA axis. We hypothesized that hippocampus, a key brain region providing inhibitory feedback to the HPA axis, would exhibit reduced excitatory glutamatergic neurotransmission and reduced N-acetyl-aspartate (NAA; a marker of neuronal integrity) levels in IBS patients. METHODS In this preliminary study, proton magnetic resonance spectroscopy was used to quantify absolute concentrations of metabolites in bilateral hippocampi of 15 IBS patients without significant psychiatric comorbidity and 15 age-matched controls. RESULTS The main finding was a reduction in hippocampal glutamate-glutamine (Glx) in IBS patients. Furthermore, Glx concentrations were inversely related to emotional stress indicators in patients only. No difference was found between subject groups for other metabolite concentrations, including NAA. However, an elevated myo-inositol (mI)/NAA ratio was found in IBS patients. CONCLUSIONS Our results provide preliminary evidence for the presence of abnormal hypofunction of hippocampal glutamatergic neurotransmission in IBS patients without psychiatric comorbidity, possibly as a result of the chronic pain. This supports the notion of an imbalance in regulatory brain regions in this subgroup of IBS patients. The inverse relationship between Glx and emotional stress indicators is in agreement with the inhibitory role of hippocampus on the stress system and suggests a sensitization of the mechanism to emotional arousal. The elevated mI/NAA ratio in IBS patients further suggests the presence of hippocampal glial proliferation and remodeling.
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Affiliation(s)
- David M Niddam
- Brain Research Center, National Yang-Ming University, Taipei, Taiwan, ROC.
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Cathcart S, Winefield AH, Lushington K, Rolan P. Stress and tension-type headache mechanisms. Cephalalgia 2011; 30:1250-67. [PMID: 20873360 DOI: 10.1177/0333102410362927] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Stress is widely demonstrated as a contributing factor in tension-type headache (TTH). The mechanisms underlying this remain unclear at present. Recent research indicates the importance of central pain processes in tension-type headache (TTH) pathophysiology. Concurrently, research with animals and healthy humans has begun to elucidate the relationship between stress and pain processing in the central nervous system, including central pain processes putatively dysfunctional in TTH. Combined, these two fields of research present new insights and hypotheses into possible mechanisms by which stress may contribute to TTH. To date, however, there has been no comprehensive review of this literature. The present paper provides such a review, which may be valuable in facilitating a broader understanding of the central mechanisms by which stress may contribute to TTH.
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Affiliation(s)
- Stuart Cathcart
- Centre for Applied Psychological Research, School of Psychology, University of South Australia, Adelaide, Australia.
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45
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Holle D, Katsarava Z, Obermann M. The Hypothalamus: Specific or Nonspecific Role in the Pathophysiology of Trigeminal Autonomic Cephalalgias? Curr Pain Headache Rep 2010; 15:101-7. [DOI: 10.1007/s11916-010-0166-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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May A. [The window into headache research : what have we learned from functional and structural neuroimaging]. Schmerz 2010; 24:130-6. [PMID: 20376601 DOI: 10.1007/s00482-010-0898-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Current functional neuroimaging studies in headache patients have demonstrated that changes in vascular function are not the primary cause for the pain in migraine. Especially in headache research, functional imaging revealed for the first time important information on the pathophysiology of idiopathic syndromes beyond mere anatomical attribution. Several independent studies have reinforced the crucial role of the brainstem in migraine resulting in primary dysfunction of the endogenous antinociceptive systems, including the periaqueductal grey and the dorsal raphe nucleus (DRN) in the midbrain as well as areas involved in the neuronal regulation of cerebral blood flow (DRN and locus coeruleus). The hypothalamus on the other hand is involved in the fundamental processes leading to the acute attacks of cluster headache. These data have been repeatedly replicated by several groups and led to a new understanding of the pathophysiology of these syndromes and specifically the central role of the brain. The recent studies investigating the structural changes in migraine, chronic tension-type headache and cluster headache are not yet clear in their relevance but raise important questions and promise increasing knowledge of one of the most frequent symptoms in humans.
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Affiliation(s)
- A May
- Institut für systemische Neurowissenschaften, Universitäts-Krankenhaus Eppendorf (UKE), Martinistr. 52, 20246, Hamburg, Deutschland.
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Matharu MS, Zrinzo L. Deep brain stimulation in cluster headache: hypothalamus or midbrain tegmentum? Curr Pain Headache Rep 2010; 14:151-9. [PMID: 20425205 DOI: 10.1007/s11916-010-0099-5] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Functional and structural neuroimaging studies have provided pivotal insights into the pathophysiology of trigeminal autonomic cephalalgias (TACs), particularly cluster headache (CH). Functional imaging studies using positron emission tomography (PET) and functional magnetic resonance imaging (fMRI) in TACs have reported activation of the posterior hypothalamus. A structural neuroimaging study using voxel-based morphometry in CH reported increased volume of the hypothalamic gray, although another larger study failed to reproduce this finding. These studies in CH prompted the use of stereotactic stimulation of the target point identified by functional and structural neuroimaging. The precise anatomical localization of the deep brain stimulation (DBS) target places it at the midbrain tegmentum rather than the posterior hypothalamus. A comparison of the PET and fMRI studies in TACs reveals that the diencephalic/mesencephalic activation is more posteroinferior in the PET studies, straddling the hypothalamus and midbrain tegmentum, whereas the activation is centered on the hypothalamus in the higher spatial resolution fMRI studies. To optimize the outcomes from DBS, it is likely that patients will need to be studied individually using functional imaging techniques that have high spatial and temporal resolution to enable targeting of the appropriate locus with stereotactic stimulation.
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What has functional neuroimaging done for primary headache … and for the clinical neurologist? J Clin Neurosci 2010; 17:547-53. [DOI: 10.1016/j.jocn.2009.09.030] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2009] [Revised: 09/22/2009] [Accepted: 09/23/2009] [Indexed: 11/20/2022]
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Fontaine D, Lanteri-Minet M, Ouchchane L, Lazorthes Y, Mertens P, Blond S, Geraud G, Fabre N, Navez M, Lucas C, Dubois F, Sol JC, Paquis P, Lemaire JJ. Anatomical location of effective deep brain stimulation electrodes in chronic cluster headache. Brain 2010; 133:1214-23. [DOI: 10.1093/brain/awq041] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Waldenlind E, Sjöstrand C. Pathophysiology of cluster headache and other trigeminal autonomic cephalalgias. HANDBOOK OF CLINICAL NEUROLOGY 2010; 97:389-411. [PMID: 20816439 DOI: 10.1016/s0072-9752(10)97033-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- Elisabet Waldenlind
- Department of Neurology, Karolinska University Hospital/Karolinska Institutet, Stockholm, Sweden.
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