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Sun M, Rong J, Zhou M, Liu Y, Sun S, Liu L, Cai D, Liang F, Zhao L. Astrocyte-Microglia Crosstalk: A Novel Target for the Treatment of Migraine. Aging Dis 2024; 15:1277-1288. [PMID: 37450927 PMCID: PMC11081170 DOI: 10.14336/ad.2023.0623] [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: 12/31/2022] [Accepted: 06/23/2023] [Indexed: 07/18/2023] Open
Abstract
Migraine is a pervasive neurologic disease closely related to neurogenic inflammation. The astrocytes and microglia in the central nervous system are vital in inducing neurogenic inflammation in migraine. Recently, it has been found that there may be a crosstalk phenomenon between microglia and astrocytes, which plays a crucial part in the pathology and treatment of Alzheimer's disease and other central nervous system diseases closely related to inflammation, thus becoming a novel hotspot in neuroimmune research. However, the role of the crosstalk between microglia and astrocytes in the pathogenesis and treatment of migraine is yet to be discussed. Based on the preliminary literature reports, we have reviewed relevant evidence of the crosstalk between microglia and astrocytes in the pathogenesis of migraine and summarized the crosstalk pathways, thereby hoping to provide novel ideas for future research and treatment.
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Affiliation(s)
- Mingsheng Sun
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jing Rong
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Mengdi Zhou
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yi Liu
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shiqi Sun
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Lu Liu
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Dingjun Cai
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Fanrong Liang
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ling Zhao
- College of Acupuncture and Tuina, Chengdu University of Traditional Chinese Medicine, Chengdu, China
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2
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Gklinos P, Mitsikostas DD. Headache disorders in multiple sclerosis: Is there an association? A systematic review and meta-analysis. Mult Scler Relat Disord 2024; 85:105536. [PMID: 38489946 DOI: 10.1016/j.msard.2024.105536] [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: 07/11/2023] [Revised: 09/05/2023] [Accepted: 03/02/2024] [Indexed: 03/17/2024]
Abstract
OBJECTIVE To look for any potential association of headache disorders with multiple sclerosis (MS). BACKGROUND The prevalence of headache disorders has been found to be increased in people with MS (pwMS), however, an association has not been established. Existing studies have provided conflicting results mostly because of methodological differences. METHODS PubMed, Embase and Scopus were searched to identify eligible studies. Studies were included if they were cross-sectional, case-control or cohort. Newcastle-Ottawa Scale (NOS) was used to assess the risk of bias of the included studies. Case-control, cross sectional or cohort studies that used the International Classification of Headache Disorders (ICHD)-2 or-3 criteria for headache diagnosis and Mc Donald or Poser criteria for MS diagnosis were included. Data were extracted using standardized data collection form. Meta-analysis was conducted by calculating the overall prevalence of headache disorders in pwMS as well as the association of headache disorders with MS. The Newcastle-Ottawa Scale (NOS), a tool for assessing the quality of non-randomized studies, was used to assess the quality of the included studies. RESULTS Twenty-three studies were included yielding a total of 5,440 MS patients and 28,0958 controls. The majority of them scored a NOS score between 5 and 6 (max 9), which indicates that they did not rank high in terms of quality, because most studies were cross-sectional and uncontrolled, and only one was prospective, controlled, and longitudinal, but with small population size. Pooled prevalence for all headache disorders, migraine and tension-type headache (TTH) in pwMS was 58 % (95 % CI 0.54-0.61), 30 % (95 % CI 0.25-0.34) and 19 % (95 % CI 0.15-0.23) respectively. A significant association between migraine and MS was found (OR = 2.02, 95 % CI = 1.14-3.57). CONCLUSION PwMS are twice as likely to experience migraine as controls, but the results need to be translated with caution since most of the studies included in the meta-analysis were of low or moderate quality. Larger prospective cohort, controlled, longitudinal studies are needed to confirm whether there is indeed an association between MS and migraine.
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Affiliation(s)
- Panagiotis Gklinos
- First Neurology Department, Eginition University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece.
| | - Dimos-Dimitrios Mitsikostas
- First Neurology Department, Eginition University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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Adamczyk B, Morawiec N, Boczek S, Dańda K, Herba M, Spyra A, Sowa A, Szczygieł J, Adamczyk-Sowa M. Headache in Multiple Sclerosis: A Narrative Review. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:572. [PMID: 38674218 PMCID: PMC11052044 DOI: 10.3390/medicina60040572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2024] [Revised: 03/20/2024] [Accepted: 03/27/2024] [Indexed: 04/28/2024]
Abstract
Background: Multiple sclerosis (MS) is a chronic inflammatory demyelinating disorder of the central nervous system characterized by autoimmune-mediated damage to oligodendrocytes and subsequent myelin destruction. Clinical implications: Clinically, the disease presents with many symptoms, often evolving over time. The insidious onset of MS often manifests with non-specific symptoms (prodromal phase), which may precede a clinical diagnosis by several years. Among them, headache is a prominent early indicator, affecting a significant number of MS patients (50-60%). Results: Headache manifests as migraine or tension-type headache with a clear female predilection (female-male ratio 2-3:1). Additionally, some disease-modifying therapies in MS can also induce headache. For instance, teriflunomide, interferons, ponesimod, alemtuzumab and cladribine are associated with an increased incidence of headache. Conclusions: The present review analyzed the literature data on the relationship between headache and MS to provide clinicians with valuable insights for optimized patient management and the therapeutic decision-making process.
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Affiliation(s)
- Bożena Adamczyk
- Department of Neurology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. 3 Maja 13-15, 41-800 Zabrze, Poland; (S.B.); (K.D.); (M.H.); (A.S.); (A.S.); (J.S.); (M.A.-S.)
| | - Natalia Morawiec
- Department of Neurology, Faculty of Medical Sciences in Zabrze, Medical University of Silesia in Katowice, ul. 3 Maja 13-15, 41-800 Zabrze, Poland; (S.B.); (K.D.); (M.H.); (A.S.); (A.S.); (J.S.); (M.A.-S.)
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4
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Kipp M. Astrocytes: Lessons Learned from the Cuprizone Model. Int J Mol Sci 2023; 24:16420. [PMID: 38003609 PMCID: PMC10671869 DOI: 10.3390/ijms242216420] [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: 10/12/2023] [Revised: 11/06/2023] [Accepted: 11/14/2023] [Indexed: 11/26/2023] Open
Abstract
A diverse array of neurological and psychiatric disorders, including multiple sclerosis, Alzheimer's disease, and schizophrenia, exhibit distinct myelin abnormalities at both the molecular and histological levels. These aberrations are closely linked to dysfunction of oligodendrocytes and alterations in myelin structure, which may be pivotal factors contributing to the disconnection of brain regions and the resulting characteristic clinical impairments observed in these conditions. Astrocytes, which significantly outnumber neurons in the central nervous system by a five-to-one ratio, play indispensable roles in the development, maintenance, and overall well-being of neurons and oligodendrocytes. Consequently, they emerge as potential key players in the onset and progression of a myriad of neurological and psychiatric disorders. Furthermore, targeting astrocytes represents a promising avenue for therapeutic intervention in such disorders. To gain deeper insights into the functions of astrocytes in the context of myelin-related disorders, it is imperative to employ appropriate in vivo models that faithfully recapitulate specific aspects of complex human diseases in a reliable and reproducible manner. One such model is the cuprizone model, wherein metabolic dysfunction in oligodendrocytes initiates an early response involving microglia and astrocyte activation, culminating in multifocal demyelination. Remarkably, following the cessation of cuprizone intoxication, a spontaneous process of endogenous remyelination occurs. In this review article, we provide a historical overview of studies investigating the responses and putative functions of astrocytes in the cuprizone model. Following that, we list previously published works that illuminate various aspects of the biology and function of astrocytes in this multiple sclerosis model. Some of the studies are discussed in more detail in the context of astrocyte biology and pathology. Our objective is twofold: to provide an invaluable overview of this burgeoning field, and, more importantly, to inspire fellow researchers to embark on experimental investigations to elucidate the multifaceted functions of this pivotal glial cell subpopulation.
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Affiliation(s)
- Markus Kipp
- Institute of Anatomy, Rostock University Medical Center, 18057 Rostock, Germany
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5
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Mohammadi M, Kankam SB, Salehi S, Mohamadi M, Mohammadi A, Firoozabadi SRD, Shaygannejad V, Mirmosayyeb O. The association between multiple sclerosis and migraine: A meta-analysis. Mult Scler Relat Disord 2023; 79:104954. [PMID: 37714098 DOI: 10.1016/j.msard.2023.104954] [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: 05/23/2023] [Revised: 07/19/2023] [Accepted: 08/20/2023] [Indexed: 09/17/2023]
Abstract
BACKGROUND Multiple sclerosis (MS) is a chronic progressive condition marked by the deterioration of myelin and impairment of neurological function. The global prevalence of MS is approximately 2.2 million. Migraines are common in MS patients, with inconclusive data on their relationship. Our systematic review aimed to assess the prevalence and odds of migraine in pwMS and investigate the potential factors that may influence these associations. METHOD Through an extensive search and meticulous study selection, we identified pertinent literature investigating the occurrence and odds of migraines among pwMS. Additionally, we explored the comparative risk of migraines in MS patients compared to healthy controls. Data were extracted, including publication details, diagnostic criteria, and migraine prevalence in MS patients. RESULTS A total of 35 studies were included, involving 279,620 pwMS and 279,603 healthy controls. The overall prevalence of migraine in pwMS was 0.24 (95% CI: 0.21-0.28). Subgroup analyses and meta-regression were conducted to investigate the potential impact of various factors on the relationship between migraine and MS. These factors included age, duration of MS, study design, and the Expanded Disability Status Scale (EDSS), migraine diagnosis method, study design, publication year of the study, country and continent of the study population. The results of these analyses revealed no significant influence of these factors on the relationship between migraine and MS. The meta-analysis indicated that pwMS had significantly increased odds of having migraine compared to healthy controls (OR = 1.96, 95% CI: 1.20-3.20). Sensitivity analyses supported the robustness of the findings. CONCLUSIONS Our study highlights that approximately 24% of pwMS experience migraine. The method of diagnosis significantly affects the reported prevalence, with questionnaires yielding higher rates. Furthermore, pwMS have a 1.96-fold increased odds of having migraine compared to healthy individuals. These findings emphasize the importance of further research and interventions to address the significant burden of migraine in the MS population.
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Affiliation(s)
| | | | - Sadaf Salehi
- Iran University of Medical Sciences, Tehran, Iran
| | - Mobin Mohamadi
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Aynaz Mohammadi
- School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | | | - Vahid Shaygannejad
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Omid Mirmosayyeb
- Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran.
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van Hameren G, Muradov J, Minarik A, Aboghazleh R, Orr S, Cort S, Andrews K, McKenna C, Pham NT, MacLean MA, Friedman A. Mitochondrial dysfunction underlies impaired neurovascular coupling following traumatic brain injury. Neurobiol Dis 2023; 186:106269. [PMID: 37619791 DOI: 10.1016/j.nbd.2023.106269] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 08/21/2023] [Accepted: 08/22/2023] [Indexed: 08/26/2023] Open
Abstract
Traumatic brain injury (TBI) involves an acute injury (primary damage), which may evolve in the hours to days after impact (secondary damage). Seizures and cortical spreading depolarization (CSD) are metabolically demanding processes that may worsen secondary brain injury. Metabolic stress has been associated with mitochondrial dysfunction, including impaired calcium homeostasis, reduced ATP production, and elevated ROS production. However, the association between mitochondrial impairment and vascular function after TBI is poorly understood. Here, we explored this association using a rodent closed head injury model. CSD is associated with neurobehavioral decline after TBI. Craniotomy was performed to elicit CSD via electrical stimulation or to induce seizures via 4-aminopyridine application. We measured vascular dysfunction following CSDs and seizures in TBI animals using laser doppler flowmetry. We observed a more profound reduction in local cortical blood flow in TBI animals compared to healthy controls. CSD resulted in mitochondrial dysfunction and pathological signs of increased oxidative stress adjacent to the vasculature. We explored these findings further using electron microscopy and found that TBI and CSDs resulted in vascular morphological changes and mitochondrial cristae damage in astrocytes, pericytes and endothelial cells. Overall, we provide evidence that CSDs induce mitochondrial dysfunction, impaired cortical blood flow, and neurobehavioral deficits in the setting of TBI.
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Affiliation(s)
- Gerben van Hameren
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada.
| | - Jamil Muradov
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Anna Minarik
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Refat Aboghazleh
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada; Department of Basic Medical Sciences, Faculty of Medicine, Al-Balqa Applied University, Al-Salt, Jordan
| | - Sophie Orr
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Shayna Cort
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Keiran Andrews
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Caitlin McKenna
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Nga Thy Pham
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada
| | - Mark A MacLean
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada; Division of Neurosurgery, Department of Surgery, Dalhousie University, NS B3H 3A7, Halifax, Canada
| | - Alon Friedman
- Department of Medical Neuroscience, Faculty of Medicine and Brain Repair Center, Dalhousie University, NS B3H 4H7, Halifax, Canada; Departments of Physiology and Cell Biology, Cognitive and Brain Sciences, Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel.
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7
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Gklinos P, Mitsikostas DD. Migraine in multiple sclerosis patients: potential links and treatment approach. Expert Opin Pharmacother 2023; 24:1845-1851. [PMID: 37807822 DOI: 10.1080/14656566.2023.2262384] [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: 07/28/2023] [Accepted: 09/20/2023] [Indexed: 10/10/2023]
Abstract
INTRODUCTION Migraine has been reported to be twice as prevalent in patients with multiple sclerosis (MS) compared to the non-MS population. However, prospective, controlled studies that could lead to robust conclusions are still lacking. AREAS COVERED Treatment of migraine in patients with MS can be challenging. Comorbidities need to be assessed and managed early, and preventive treatment should be initiated when indicated. Caution is warranted regarding the selection of the preventive medication since certain agents can magnify MS symptoms and particularly cognitive symptoms. This paper aims to discuss the association of MS and migraine, shed light on distinguishing points and red flags, as well as offer practical advice on the selection of treatment according to patients' characteristics. EXPERT OPINION A holistic approach including pharmacological and non-pharmacological modifications is required to treat migraine in patients with MS effectively. Anti-CGRP monoclonal antibodies are a promising option due to limited drug-to-drug interactions; however, larger prospective studies are required to draw robust conclusions on the concomitant use of anti-CGRPs with MS disease modifying treatments. Early migraine preventive treatment might be needed to reduce the burden of disease in patients with MS.
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Affiliation(s)
- Panagiotis Gklinos
- Department of Neurology, Aeginition University Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimos-Dimitrios Mitsikostas
- Department of Neurology, Aeginition University Hospital, National and Kapodistrian University of Athens, Athens, Greece
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King H, Reiber M, Philippi V, Stirling H, Aulehner K, Bankstahl M, Bleich A, Buchecker V, Glasenapp A, Jirkof P, Miljanovic N, Schönhoff K, von Schumann L, Leenaars C, Potschka H. Anesthesia and analgesia for experimental craniotomy in mice and rats: a systematic scoping review comparing the years 2009 and 2019. Front Neurosci 2023; 17:1143109. [PMID: 37207181 PMCID: PMC10188949 DOI: 10.3389/fnins.2023.1143109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/27/2023] [Indexed: 05/21/2023] Open
Abstract
Experimental craniotomies are a common surgical procedure in neuroscience. Because inadequate analgesia appears to be a problem in animal-based research, we conducted this review and collected information on management of craniotomy-associated pain in laboratory mice and rats. A comprehensive search and screening resulted in the identification of 2235 studies, published in 2009 and 2019, describing craniotomy in mice and/or rats. While key features were extracted from all studies, detailed information was extracted from a random subset of 100 studies/year. Reporting of perioperative analgesia increased from 2009 to 2019. However, the majority of studies from both years did not report pharmacologic pain management. Moreover, reporting of multimodal treatments remained at a low level, and monotherapeutic approaches were more common. Among drug groups, reporting of pre- and postoperative administration of non-steroidal anti-inflammatory drugs, opioids, and local anesthetics in 2019 exceeded that of 2009. In summary, these results suggest that inadequate analgesia and oligoanalgesia are persistent issues associated with experimental intracranial surgery. This underscores the need for intensified training of those working with laboratory rodents subjected to craniotomies. Systematic review registration https://osf.io/7d4qe.
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Affiliation(s)
- Hannah King
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Maria Reiber
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Vanessa Philippi
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Helen Stirling
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Katharina Aulehner
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Marion Bankstahl
- Hannover Medical School, Institute for Laboratory Animal Science, Hanover, Germany
| | - André Bleich
- Hannover Medical School, Institute for Laboratory Animal Science, Hanover, Germany
| | - Verena Buchecker
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Aylina Glasenapp
- Hannover Medical School, Institute for Laboratory Animal Science, Hanover, Germany
| | - Paulin Jirkof
- Office for Animal Welfare and 3Rs, University of Zurich, Zurich, Switzerland
| | - Nina Miljanovic
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Katharina Schönhoff
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Lara von Schumann
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
| | - Cathalijn Leenaars
- Hannover Medical School, Institute for Laboratory Animal Science, Hanover, Germany
| | - Heidrun Potschka
- Institute of Pharmacology, Toxicology, and Pharmacy, Ludwig Maximilian University of Munich, Munich, Germany
- *Correspondence: Heidrun Potschka,
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9
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Nociti V, Romozzi M. Multiple Sclerosis and Autoimmune Comorbidities. J Pers Med 2022; 12:jpm12111828. [PMID: 36579555 PMCID: PMC9698878 DOI: 10.3390/jpm12111828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Revised: 10/17/2022] [Accepted: 10/29/2022] [Indexed: 11/06/2022] Open
Abstract
Multiple sclerosis (MS) is a chronic inflammatory and neurodegenerative disease of the central nervous system characterized by broad inter- and intraindividual heterogeneity and different prognoses. Multisystem comorbidities are frequent features in people with MS (PwMS) and can affect treatment choices, quality of life, disability and mortality. In this scenario, autoimmune comorbidities play a cardinal role for several reasons, such as the implication on MS pathogenesis, diagnostic delay, disease activity, disability progression, brain atrophy, and treatment choice. However, the impact of an autoimmune comorbid condition on MS is not fully elucidated. This review aims to summarize the currently available data on the incidence and prevalence of autoimmune diseases in PwMS, the possible effect of this association on clinical and neuroradiological MS course and its impact on treatment choice.
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Affiliation(s)
- Viviana Nociti
- Centro Sclerosi Multipla, Fondazione Policlinico Universitario ‘Agostino Gemelli’ IRCCS, 00168 Rome, Italy
- Università Cattolica del Sacro Cuore, 00168 Rome, Italy
- Correspondence:
| | - Marina Romozzi
- Centro Sclerosi Multipla, Fondazione Policlinico Universitario ‘Agostino Gemelli’ IRCCS, 00168 Rome, Italy
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10
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B-Cell Targeted Therapies in Patients with Multiple Sclerosis and Incidence of Headache: A Systematic Review and Meta-Analysis. J Pers Med 2022; 12:jpm12091474. [PMID: 36143259 PMCID: PMC9504525 DOI: 10.3390/jpm12091474] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Revised: 08/31/2022] [Accepted: 09/06/2022] [Indexed: 11/17/2022] Open
Abstract
Background: Multiple Sclerosis treatment with B-cell targeted therapies may be associated with an increased incidence of headache. We aimed to find and compare the association of B-cell targeted therapies with the incidence of headache in patients with Multiple Sclerosis. Methods: In a systematic based approach, the following databases were searched from inception until the 6th of June 2020: Pubmed/MEDLINE, ClinicalTrials.gov, EU Clinical Trials Register. Only randomized clinical trials (RCTs) enrolling patients with Multiple Sclerosis comparing B-cell targeted therapies (Rituximab, Ocrelizumab, Ofatumumab, Ublituximab or Cladribine) with placebo were selected for the systematic review and further meta-analysis. PRISMA guidelines were followed at all stages of the systematic review. The primary outcome was an all-cause headache of B-cell targeting therapy in patients with Multiple Sclerosis. Results: Nine RCTs were included. Compared with placebo, treatment with B-cell targeting therapies revealed a trend in headache risk, but it was not statistically significant (Relative Risk 1.12 [95% Confidence Interval 0.96–1.30]; p = 0.15; I2 = 9.32%). Surprisingly, in a sub-group analysis, Cladribine was statistically significant for an increase in headache risk (RR 1.20 [95% CI 1.006–1.42]; p = 0.042; I2 = 0%; 3 studies with 2107 participants). Conclusions: Even though a trend is shown, B-cell targeted therapies do not correlate with an increased incidence of headache as an adverse effect. Sub-analyses revealed a significant association between Cladribine alone and an increased incidence of headache. Whereas a purinergic signaling cascade is proposed as a mechanism of action, further research is needed to unravel the underlying pathogenetic mechanism of headache induction and establish headache prevention strategies.
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11
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Yan J, Li W, Zhou C, Wu N, Yang X, Pan Q, He T, Wu Y, Guo Z, Xia Y, Sun X, Cheng C. Dynamic Measurements of Cerebral Blood Flow Responses to Cortical Spreading Depolarization in the Murine Endovascular Perforation Subarachnoid Hemorrhage Model. Transl Stroke Res 2022:10.1007/s12975-022-01052-1. [PMID: 35749033 DOI: 10.1007/s12975-022-01052-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 05/30/2022] [Accepted: 06/10/2022] [Indexed: 12/13/2022]
Abstract
Delayed cerebral ischemia (DCI) is the most severe complication after subarachnoid hemorrhage (SAH), and cortical spreading depolarization (CSD) is believed to play a vital role in it. However, the dynamic changes in cerebral blood flow (CBF) in response to CSD in typical SAH models have not been well investigated. Here, SAH was established in mice with endovascular perforation. Subsequently, the spontaneous CBF dropped instantly and then returned to baseline rapidly. After KCl application to the cortex, subsequent hypoperfusion waves occurred across the groups, while a lower average perfusion level was found in the SAH groups (days 1-7). Moreover, in the SAH groups, the number of CSD decreased within day 7, and the duration and spreading velocity of the CSD increased within day 3 and day 14, respectively. Next, we continuously monitored the local field potential (LFP) in the prefrontal cortex. The results showed that the decrease in the percentage of gamma oscillations lasted throughout the whole process in the SAH group. In the chronic phase after SAH, we found that the mice still had cognitive deficits but experienced no obvious tissue damage. In summary, SAH negatively affects the CBF responses to CSD and the spontaneous LFP activity and causes long-term cognitive deficits in mice. Based on these findings, in the specific phase after SAH, DCI is induced or exacerbated more easily by potential causers of CSD in clinical practice (edema, erythrocytolysis, inflammation), which may lead to neurological deterioration.
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Affiliation(s)
- Jin Yan
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Wenlang Li
- Department of Anesthesiology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Chao Zhou
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Na Wu
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Xiaomin Yang
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Qiuling Pan
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Tao He
- Department of Orthopaedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Yue Wu
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Zongduo Guo
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Yongzhi Xia
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China
| | - Xiaochuan Sun
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China.
| | - Chongjie Cheng
- Department of Neurosurgery, the First Affiliated Hospital of Chongqing Medical University, 1 Youyi Rd, Chongqing, 400016, People's Republic of China.
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12
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Neuroelectric Mechanisms of Delayed Cerebral Ischemia after Aneurysmal Subarachnoid Hemorrhage. Int J Mol Sci 2022; 23:ijms23063102. [PMID: 35328523 PMCID: PMC8951073 DOI: 10.3390/ijms23063102] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Revised: 03/11/2022] [Accepted: 03/11/2022] [Indexed: 12/16/2022] Open
Abstract
Delayed cerebral ischemia (DCI) remains a challenging but very important condition, because DCI is preventable and treatable for improving functional outcomes after aneurysmal subarachnoid hemorrhage (SAH). The pathologies underlying DCI are multifactorial. Classical approaches to DCI focus exclusively on preventing and treating the reduction of blood flow supply. However, recently, glutamate-mediated neuroelectric disruptions, such as excitotoxicity, cortical spreading depolarization and seizures, and epileptiform discharges, have been reported to occur in high frequencies in association with DCI development after SAH. Each of the neuroelectric disruptions can trigger the other, which augments metabolic demand. If increased metabolic demand exceeds the impaired blood supply, the mismatch leads to relative ischemia, resulting in DCI. The neuroelectric disruption also induces inverted vasoconstrictive neurovascular coupling in compromised brain tissues after SAH, causing DCI. Although glutamates and the receptors may play central roles in the development of excitotoxicity, cortical spreading ischemia and epileptic activity-related events, more studies are needed to clarify the pathophysiology and to develop novel therapeutic strategies for preventing or treating neuroelectric disruption-related DCI after SAH. This article reviews the recent advancement in research on neuroelectric disruption after SAH.
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13
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Spirin N, Kiselev D, Baranova N, Karpova M. Nociceptive and mixed pains in patients with multiple sclerosis. Zh Nevrol Psikhiatr Im S S Korsakova 2022; 122:44-51. [DOI: 10.17116/jnevro202212207244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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14
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Haindl MT, Üçal M, Klaus B, Tögl L, Dohrmann J, Adzemovic MZ, Enzinger C, Hochmeister S. Anti-CD20 treatment effectively attenuates cortical pathology in a rat model of widespread cortical demyelination. J Neuroinflammation 2021; 18:138. [PMID: 34130726 PMCID: PMC8207776 DOI: 10.1186/s12974-021-02189-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 05/30/2021] [Indexed: 11/10/2022] Open
Abstract
Background Cortical demyelination represents a prominent feature of the multiple sclerosis (MS) brain, especially in (late) progressive stages. We recently developed a new rat model that reassembles critical features of cortical pathology characteristic to progressive types of MS. In persons affected by MS, B-cell depleting anti-CD20 therapy proved successful in the relapsing remitting as well as the early progressive course of MS, with respect to reducing the relapse rate and number of newly formed lesions. However, if the development of cortical pathology can be prevented or at least slowed down is still not clear. The main goal of this study was thus to increase our understanding for the mode of action of B-cells and B-cell directed therapy on cortical lesions in our rat model. Methods For this purpose, we set up two separate experiments, with two different induction modes of B-cell depletion. Brain tissues were analyzed thoroughly using histology. Results We observed a marked reduction of cortical demyelination, microglial activation, astrocytic reaction, and apoptotic cell loss in anti-CD20 antibody treated groups. At the same time, we noted increased neuronal preservation compared to control groups, indicating a favorable impact of anti-CD20 therapy. Conclusion These findings might pave the way for further research on the mode of action of B-cells and therefore help to improve therapeutic options for progressive MS. Supplementary Information The online version contains supplementary material available at 10.1186/s12974-021-02189-w.
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Affiliation(s)
| | - Muammer Üçal
- Department of Neurosurgery, Research Unit Experimental Neurotraumatology, Medical University of Graz, Graz, Austria
| | - Benjamin Klaus
- Department of Neurosurgery, Research Unit Experimental Neurotraumatology, Medical University of Graz, Graz, Austria
| | - Lennart Tögl
- Department of Neurosurgery, Research Unit Experimental Neurotraumatology, Medical University of Graz, Graz, Austria
| | - Jana Dohrmann
- Department of Neurology, Medical University of Graz, Graz, Austria
| | - Milena Z Adzemovic
- Department of Clinical Neuroscience, Center for Molecular Medicine, Karolinska Institutet, Stockholm, Sweden.,Center of Neurology, Academic Specialist Center, Stockholm Health Services, Stockholm, Sweden
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15
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Alves DVDS, Sousa MSB, Tavares MGB, Batista-de-Oliveira Hornsby M, Amancio-Dos-Santos A. Coconut oil supplementation during development reduces brain excitability in adult rats nourished and overnourished in lactation. Food Funct 2021; 12:3096-3103. [PMID: 33720258 DOI: 10.1039/d1fo00086a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Coconut oil has been considered as a therapeutic alternative in several pathologies, but there is limited information regarding its effects on brain functioning. OBJECTIVE This study analyzed whether early virgin coconut oil (VCO) supplementation interferes with electrical activity of the adult rat brain and its lipid peroxidation. Moreover, it investigated whether the putative effect on brain electrophysiology could be affected by overnutrition occurring during lactation, and/or by environmental enrichment (EE). Electrophysiology was measured through cortical spreading depression (CSD), a phenomenon related to brain excitability. METHODS Wistar rats were suckled in litters of either nine or three pups, forming nourished (N) or overnourished (ON) groups, respectively. Between the 7th and 30th days of life, half of the animals in each group received VCO (10 mg kg-1 d-1; by gavage). The other half received an equivalent amount of vehicle (V, 0.009% cremophor). On day 36, animals from both groups were subjected to EE for 4 weeks. At 105 ± 15 days of life, each animal was subjected to CSD recordings and lipid peroxidation analyses. RESULTS Overnutrition during lactation enhanced body and brain weights. VCO decelerated the CSD propagation velocity (control - 3.57 ± 0.23 mm min-1versus VCO - 3.27 ± 0.18 mm min-1; p < 0.001), regardless of whether subjected to overnourishment or EE exposure. Neither VCO nor EE modified the cerebral lipid peroxidation (p > 0.05). CONCLUSION VCO supplementation impaired the spreading of CSD, indicating reduction of brain excitability. VCO effects occurred regardless of the nutritional state during lactation.
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Wang L, Zhang J, Deng ZR, Zu MD, Wang Y. The epidemiology of primary headaches in patients with multiple sclerosis. Brain Behav 2021; 11:e01830. [PMID: 33295123 PMCID: PMC7821604 DOI: 10.1002/brb3.1830] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/28/2020] [Accepted: 08/17/2020] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE Recent studies have shown a pathophysiologic link between headache and multiple sclerosis (MS), but the prevalence of primary headaches among patients with MS differs substantially across studies. This meta-analysis aimed to comprehensively gather available evidence to estimate the prevalence of primary headaches among patients with MS. METHOD We systematically searched the electronic databases including PubMed, Embase, and Scopus for cohort, case-control, cross-sectional studies that measured the prevalence of headache among patients with MS. Two reviewers independently screened titles and abstracts to identify the eligible studies and the full texts of the included studies were reviewed. Newcastle-Ottawa Scale (NOS) was used to assess the risk of bias of the included literatures. We then conducted a meta-analysis using Stata Software 15.0 to calculate the pooled prevalence of headaches among patients with MS and assess the source of heterogeneity. RESULTS We identified 16 eligible studies covering a total of 3,560 patients with MS. The pooled estimated prevalence of primary headaches among patients with MS was 56%. The statistical heterogeneity was moderate with I2 of 82.1% (p < .001). Both a visual inspection of the funnel plot and Egger' regression tests revealed no significant publication bias (p = .44). The pooled estimated prevalence of migraine (55%) was higher in comparison with that of tension-type headache (20%). The prevalence of migraine subtype was 16% and 10% for migraine without aura and migraine with aura, respectively. The pooled prevalence of primary headache in case-control group (57%) was approximately in line with the cross-sectional group (56%). CONCLUSION The overall prevalence of primary headaches among patients with MS was considerably high. Clinical screening of headache among patients with MS will be helpful to formulate an individualized treatment plans and alleviate the physical and mental impact of the disease.
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Affiliation(s)
- Long Wang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Juan Zhang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Zi-Ru Deng
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Mei-Dan Zu
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Yu Wang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
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17
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Abstract
The relationship between headache and multiple sclerosis (MS) has been a matter of controversy for over 60 years. Headaches are still rated as a "red flag", indicating alternative diagnoses to MS, although in the last few years numerous studies have shown a frequent association between headache and MS. In recent studies on MS patients, a link was found between lower age/shorter disease duration of MS and frequent headaches. A study of 50 patients manifesting MS for the first time showed the highest headache prevalence in MS of 78% reported so far.Headaches can also be a possible side effect of most disease-modifying MS drugs. In many cases, however, the headache appears to be a symptom of MS in terms of secondary headache. This is also supported by pathophysiological implications, for example, by detecting B cell follicles in the meninges of MS patients.Migraine is the most common type of headache in MS. In some cases, this is a comorbidity of two diseases with many similarities, but headaches caused by inflammatory MS lesions also appear to be phenomenologically very similar to classic migraines; thus, distinguishing between them is often only successful with the help of thorough differential diagnostics (cerebrospinal fluid, MRI etc.).The task of future studies must be to specify the phenomenology of headache in MS even more precisely, in order to, to gain knowledge in, among others, patients with radiologically isolated syndrome, who often suffer from headache, because in these patients a considerable differential diagnostic and therapeutic uncertainty exists.
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18
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Benevides RDDL, de-Lima SMV, Chagas CL, de Lima CF, Abadie-Guedes R, Guedes RCA. Lactation in large litters influences anxiety, memory, and spreading depression in adult male rats that were chronically subjected to a non-convulsive pilocarpine dose. Nutr Neurosci 2020; 25:846-856. [PMID: 32912080 DOI: 10.1080/1028415x.2020.1819103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Objectives: Unfavorable lactation influences brain excitability and behavioral reactions in adults. Administration early in life of the cholinergic agonist, pilocarpine, even at non-convulsive doses, alters the brain excitability-related phenomenon known as cortical spreading depression (CSD), and produce anxiogenic-like behavior. However, the influence of unfavorable lactation on the CSD- and memory-effects of pilocarpine administration late in life has not been investigated. Herein, we analyzed the ponderal, electrophysiological (CSD), and behavioral effects of chronic treatment with a non-convulsive dose of pilocarpine, in adult rats suckled under favorable and unfavorable conditions.Methods: Wistar rats were suckled in litters with 9 or 15 pups (groups L9 and L15, respectively). A very low dose of pilocarpine (45/mg/kg/day) was chronically administered in mature rats from postnatal day (PND) 69-90. Behavioral tests occurred at PND91 [elevated plus maze (EPM)], PND93 [open field (OF)], and PND94-95 [object recognition memory (ORM)]. CSD was recorded between PND96-120.Results: Pilocarpine-treated rats performed worse in the anxiety and memory tests, and displayed lower CSD propagation velocity when compared with saline-treated controls. In addition, L15 rats showed an increase in the distance traveled and a decrease in the immobility time in the EPM, impaired ORM, and accelerated CSD propagation when compared with L9 rats (p ≤ 0.05).Discussion: These data suggest that sub-convulsive pilocarpine treatment in adult rats can affect behavioral and excitability-related reactions. In addition, unfavorable lactation increases the ambulatory effects of pilocarpine. Further studies should investigate the possible cholinergic molecular mechanisms involved in these effects.
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Affiliation(s)
| | | | - Camila Lima Chagas
- Department of Nutrition, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Clara Farah de Lima
- Department of Nutrition, Universidade Federal de Pernambuco, Recife, PE, Brazil
| | - Ricardo Abadie-Guedes
- Department of Physiology and Pharmacology, Universidade Federal de Pernambuco, Recife, PE, Brazil
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Vorobeychik G, Black D, Cooper P, Cox A. Multiple sclerosis and related challenges to young women's health: Canadian expert review. Neurodegener Dis Manag 2020; 10:1-13. [PMID: 32372725 DOI: 10.2217/nmt-2020-0010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Multiple sclerosis (MS) is among the most common chronic neurological diseases, with a highly variable degree of disability during its long-term course. The majority of patients develop significant permanent disability later in life. MS is often diagnosed in women of childbearing age, with a 3:1 ratio of young women to young men with MS. Comorbidities such as depression, anxiety, migraines and reproductive, urological and bowel issues are common and negatively impact patients' quality of life. The objective of this supplement is to review the most common comorbidities occurring in young women with MS, and to propose a multidisciplinary, holistic approach to management.
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Affiliation(s)
- Galina Vorobeychik
- Department of Medicine, University of British Columbia, Vancouver, BC V5Z 1M9.,Fraser Health Multiple Sclerosis Clinic, Burnaby Hospital, Burnaby, BC V5G 2X6
| | - Denise Black
- Seine River Medical Centre, Winnipeg, MB R2N 0A5
| | - Paul Cooper
- Department of Clinical Neurological Sciences, Western University, London, ON N6A 3K7.,Schulich School of Medicine & Dentistry, London, ON N6A 5C1
| | - Ashley Cox
- Department of Urology, Dalhousie University, Halifax, NS B3H 1Y6
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20
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Junker A, Wozniak J, Voigt D, Scheidt U, Antel J, Wegner C, Brück W, Stadelmann C. Extensive subpial cortical demyelination is specific to multiple sclerosis. Brain Pathol 2020; 30:641-652. [PMID: 31916298 PMCID: PMC8018087 DOI: 10.1111/bpa.12813] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 01/02/2020] [Indexed: 12/20/2022] Open
Abstract
Cortical demyelinated lesions are frequent and widespread in chronic multiple sclerosis (MS) patients, and may contribute to disease progression. Inflammation and related oxidative stress have been proposed as central mediators of cortical damage, yet meningeal and cortical inflammation is not specific to MS, but also occurs in other diseases. The first aim of this study was to test whether cortical demyelination was specific for demyelinating CNS diseases compared to other CNS disorders with prominent meningeal and cortical inflammation. The second aim was to assess whether oxidative tissue damage was associated with the extent of neuroaxonal damage. We studied a large cohort of patients diagnosed with demyelinating CNS diseases and non‐demyelinating diseases of autoimmune, infectious, neoplastic or metabolic origin affecting the meninges and the cortex. Included were patients with MS, acute disseminated encephalomyelitis (ADEM), neuromyelitis optica (NMO), viral and bacterial meningoencephalitis, progressive multifocal leukoencephalopathy (PML), subacute sclerosing panencephalitis (SSPE), carcinomatous and lymphomatous meningitis and metabolic disorders such as extrapontine myelinolysis, thus encompassing a wide range of adaptive and innate cytokine signatures. Using myelin protein immunohistochemistry, we found cortical demyelination in MS, ADEM, PML and extrapontine myelinolysis, whereby each condition showed a disease‐specific histopathological pattern. Remarkably, extensive ribbon‐like subpial demyelination was only observed in MS, thus providing an important pathogenetic and diagnostic cue. Cortical oxidative injury was detected in both demyelinating and non‐demyelinating CNS disorders. Our data demonstrate that meningeal and cortical inflammation alone accompanied by oxidative stress are not sufficient to generate the extensive subpial cortical demyelination found in MS, but require other MS‐specific factors.
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Affiliation(s)
- Andreas Junker
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.,Department of Neuropathology, University Hospital Essen, Hufelandstr. 55, 45147, Essen, Germany
| | - Jadwiga Wozniak
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - David Voigt
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - Uta Scheidt
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - Jack Antel
- Montreal Neurological Institute, McGill University Health Centre, 2155 Guy Street, Montreal, Canada
| | - Christiane Wegner
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany.,Department of Child and Adolescent Psychiatry/Psychotherapy, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - Wolfgang Brück
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
| | - Christine Stadelmann
- Institute of Neuropathology, University Medical Center Göttingen, Georg August University Göttingen, Robert-Koch-Str. 40, 37075, Göttingen, Germany
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21
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Vinogradova LV, Rysakova MP, Pavlova IV. Small damage of brain parenchyma reliably triggers spreading depolarization. Neurol Res 2020; 42:76-82. [DOI: 10.1080/01616412.2019.1709745] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Lyudmila V. Vinogradova
- Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, Russia
| | - Maria P. Rysakova
- Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, Russia
| | - Irina V Pavlova
- Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, Moscow, Russia
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22
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Francisco EDS, Mendes-da-Silva RF, de Castro CBL, Soares GDSF, Guedes RCA. Taurine/Pilocarpine Interaction in the Malnourished Rat Brain: A Behavioral, Electrophysiological, and Immunohistochemical Analysis. Front Neurosci 2019; 13:981. [PMID: 31619952 PMCID: PMC6759493 DOI: 10.3389/fnins.2019.00981] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 08/30/2019] [Indexed: 12/05/2022] Open
Abstract
This study aimed to evaluate the possible protective role of taurine on anxiety-like behavior, brain electrical activity and glial cell immunoreactivity in well-nourished and malnourished rats that were treated with a subconvulsing dose of pilocarpine. Newborn Wistar rats were subjected to normal or unfavorable lactation conditions, represented by the suckling of litters with 9 or 15 pups, resulting in well-nourished and malnourished animals, respectively. Each nutritional group was split into five subgroups that were treated from postnatal day (PND) 35 to 55 with 300 mg/kg/day of taurine + 45 mg/kg/day of pilocarpine (group T + P), taurine only (group T), pilocarpine only (group P), vehicle control (group V), or not treated control (group naïve; Nv). At PND56-58, the groups were subjected to the elevated plus-maze behavioral tests. Glycemia was measured on PND59. Between PND60 and PND65, the cortical spreading depression (CSD) was recorded in the cerebral cortex, and the levels of malondialdehyde and microglial and astrocyte immunoreactivity were evaluated in the cortex and hippocampus. Our data indicate that treatment with taurine and pilocarpine resulted in anxiolytic-like and anxiogenic behavior, respectively, and that nutritional deficiency modulated these effects. Both treatments decelerated CSD propagation and modulated GFAP- and Iba1-containing glial cells. Pilocarpine reduced body weight and glycemia, and administration of taurine was not able to attenuate the effects of pilocarpine. The molecular mechanisms underlying taurine action on behavioral and electrophysiological parameters in the normal and altered brain remain to be further explored.
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23
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Alves DVDS, Sousa MSB, Tavares MG, Santos LGCD, Batista-de-Oliveira-Hornsby M, Amancio-Dos-Santos A. Environmental enrichment reduces brain excitability in adult rats overnourished during lactation. ARQUIVOS DE NEURO-PSIQUIATRIA 2019; 77:555-559. [PMID: 31508681 DOI: 10.1590/0004-282x20190083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 04/09/2019] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This study aimed to analyze whether exposure to environmental enrichment (EE) during the juvenile phase of life interferes with the electrical activity of the adult rat brain. In addition, the present research also investigated whether this putative effect on brain electrical activity could be affected by prior overnutrition during lactation. Electrophysiology was measured through cortical spreading depression (CSD), a phenomenon related to brain excitability. METHODS Wistar rats were suckled in litters of either nine or three pups, forming the nourished (N) or overnourished (ON) groups, respectively. At 36 days old, half of the animals from each nutritional condition were exposed to EE. The other half was kept in the standard environment (SE). At 90-120 days of life, each animal was anesthetized for CSD recordings. RESULTS Overnutrition during lactation caused increases (p < 0.05) in body and brain weights. The EE decelerated CSD propagation velocity regardless of nutritional state during lactation (p < 0.001). The CSD deceleration in the N-EE group was 23.8% and in the ON-EE group was 15% in comparison with the N-SE and ON-SE groups, respectively. CONCLUSION Our data demonstrated that EE exposure in the juvenile phase of the rat's life reduced brain excitability, and this effect was observed even if animals were overnourished during lactation. An EE could be considered an adjuvant therapeutic resource to modulate brain excitability.
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Affiliation(s)
| | | | - Maryane Gabriela Tavares
- Universidade Federal de Pernambuco, Centro de Ciências da Saúde, Departamento de Nutrição, Recife PE, Brasil
| | | | | | - Angela Amancio-Dos-Santos
- Universidade Federal de Pernambuco, Centro de Biociências, Departamento de Fisiologia e Farmacologia, Recife PE, Brasil
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24
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Guedes RCA, Abadie-Guedes R. Brain Aging and Electrophysiological Signaling: Revisiting the Spreading Depression Model. Front Aging Neurosci 2019; 11:136. [PMID: 31231207 PMCID: PMC6567796 DOI: 10.3389/fnagi.2019.00136] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 05/21/2019] [Indexed: 12/31/2022] Open
Abstract
As a consequence of worldwide improvement in health care, the aging portion of the human population has increased, now representing a higher proportion of the total population. This fact raises great concern regarding how to age while maintaining good brain function. Very often, alterations in brain electrophysiological signaling are associated with age-dependent functional disorders of the brain. Therefore, animal models suitable for the study of age-related changes in electrical activity of the brain can be very useful. Herein, we review changes in brain electrophysiological features as a function of age by analyzing studies in the rat brain on the phenomenon known as cortical spreading depression (CSD). Alterations in the brain’s capability to generate and propagate CSD may be related to differences in the propensity to develop certain neurological diseases, such as epilepsy, stroke, and migraine, which can biunivocally interact with the aging process. In this review, we revisit ours and others’ previous studies on electrophysiological features of the CSD phenomenon, such as its velocity of propagation and amplitude and duration of its slow negative DC shift, as a function of the animal age, as well as the interaction between age and other factors, such as ethanol consumption, physical exercise, and nutritional status. In addition, we discuss one relatively new feature through which CSD modulates brain signaling: the ability to potentiate the brain’s spontaneous electrical activity. We conclude that the CSD model might importantly contribute to a better understanding of the aging/brain signaling relationship.
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Affiliation(s)
| | - Ricardo Abadie-Guedes
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, Brazil
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25
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Magalhães PCG, Abadie-Guedes R, da Costa Mendonça MAB, de Souza AD, Guedes RCA. Behavioral and electrophysiological brain effects of aspartame on well-nourished and malnourished rats. Metab Brain Dis 2019; 34:651-658. [PMID: 30547285 DOI: 10.1007/s11011-018-0361-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 12/03/2018] [Indexed: 10/27/2022]
Abstract
The non-caloric sweetener aspartame can be potentially harmful to the developing brain, as some studies suggest an association between aspartame intake and adverse neural effects. This study aimed to evaluate the possible effects of aspartame, with or without associated early nutritional deficiency, on behavioral parameters suggestive of anxiety and electrophysiological features of the excitability-related phenomenon known as cortical spreading depression (CSD). Newborn Wistar rats (n = 80) were suckled under favorable (L9; n = 40) or unfavorable lactation conditions (L15; n = 40), consisting of litters with 9 or 15 pups, respectively. In each lactation condition, animals were divided into 4 groups that received per gavage, from postnatal day 8 to 28, 75 mg/kg/d or 125 mg/kg/d aspartame (groups ASP75 and ASP125), or water (vehicle group), or no treatment (naive group). Behavioral tests (elevated plus-maze [EPM]) were performed at postnatal days 86-95 and CSD was recorded between postnatal days 96-115. Compared to the control groups, aspartame dose-dependently reduced body weight, suggesting a negative impact on animal development; aspartame also caused behavioral changes suggestive of anxiety (shorter stay in the open arms in the EPM) and decelerated CSD (lower propagation speed). Some of these parameters were more affected in L15 animals, suggesting an interaction among aspartame and lactation condition. We concluded that early consumption of aspartame adversely affects development of the organism (weight loss), with actions on behavioral (anxiety-like) and cerebral electrophysiological (CSD) parameters. The data suggest caution in aspartame consumption by lactating mothers and their infants.
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Affiliation(s)
| | - Ricardo Abadie-Guedes
- Departamento de Fisiologia e Farmacologia, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
| | | | - Aline Duarte de Souza
- Departamento de Nutrição, Universidade Federal de Pernambuco, Recife, PE, 50670-901, Brazil
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Accioly NE, Guedes RCA. Neonatal treatment with ovarian hormones and suckling among distinct litter sizes: Differential effects on recognition memory and spreading depression at adulthood. Nutr Neurosci 2019; 22:174-184. [PMID: 28891432 DOI: 10.1080/1028415x.2017.1358472] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVES Ovarian hormones (OH) and early malnutrition may affect the developing brain, with repercussions on behavioral and excitability-dependent processes. However, the possible synergistic effects of both factors have not been analyzed. In this study, we investigated the effect of treatment in early life with OH and suckling among distinct litter sizes on recognition memory, anxiety behavior, and the excitability-dependent phenomenon known as cortical spreading depression (CSD). METHODS Female Wistar rats were suckled under favorable and unfavorable lactation, corresponding to litters with 9 and 15 pups (L9 and L15 groups, respectively). From postnatal days (P) 7 to 21, the animals received 50 µg/kg of β-estradiol or progesterone. From P80 to P84, we tested behavioral reactions. From P90 to P120, we analyzed CSD parameters. RESULTS Compared with the corresponding L9 groups, the OH-treated L15 groups performed worse in recognition memory tasks. No intergroup difference in the anxiety parameters was observed. Compared with naive and vehicle-treated controls, OH-treated groups displayed higher CSD velocities and amplitudes and shorter CSD durations. DISCUSSION Early treatment with OH facilitates recognition memory and CSD, and in association with unfavorable lactation (L15) impaired recognition memory, but not anxiety behavior, in the adult brain. OH treatment and L15 lactation condition seem to interact regarding OH action on memory, but not on CSD. Data suggest a long-lasting differential effect that might be related to the lasting hormonal action on brain excitability. We postulate and discuss the possibility that these findings may be implicated in human neurological diseases.
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Monteiro HMC, de Mendonça DC, Sousa MSB, Amancio-dos-Santos A. Physical exercise counteracts the increase in velocity of propagation of cortical spreading depression imposed by early over-nutrition in rats. Nutr Neurosci 2018; 23:161-169. [DOI: 10.1080/1028415x.2018.1481180] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Affiliation(s)
| | - Débora Carneiro de Mendonça
- Departamento de Fisiologia e Farmacologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE 50740-600, Brazil
| | - Mariana Séfora Bezerra Sousa
- Departamento de Nutrição, Centro de Ciências da Saúde, Universidade Federal de Pernambuco, Recife, PE 50670-901, Brazil
| | - Angela Amancio-dos-Santos
- Departamento de Fisiologia e Farmacologia, Centro de Biociências, Universidade Federal de Pernambuco, Recife, PE 50740-600, Brazil
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Sousa MSB, Holanda IMSD, Monteiro HMC, Amâncio-dos-Santos Â. Antioxidant extract counteracts the effects of aging on cortical spreading depression and oxidative stress in the brain cortex. Acta Cir Bras 2018; 33:472-482. [DOI: 10.1590/s0102-865020180060000001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2018] [Accepted: 05/12/2018] [Indexed: 11/22/2022] Open
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Abstract
PURPOSE OF REVIEW The purpose of this review was to discuss the prevalence, impact, pathophysiology, and treatment of headaches (H/As) in patients with multiple sclerosis (MS). RECENT FINDINGS Headaches and multiple sclerosis are more common in women than in men with the ratio of female to male being 3:1. It is not entirely clear if there is a correlation or an incidental comorbidity of two neurological conditions. A review of the literature shows a variable prevalence of H/As in MS patients. Using the International Classification of Headache Disorders (ICHD) criteria, the primary type of H/As, especially migraine, is the most common type seen in patients with MS. One of the theories of the pathophysiologic mechanisms of migraine in MS patients is inflammation leading to demyelinating lesions in the pain-producing centers in the midbrain. Secondary H/As due to MS medications such as interferons are also frequently present. H/As can be a cause for significant comorbidity in patients with MS. The treatment of H/As in patients with MS should be addressed in the same fashion as in the non-MS population, which is a combination of pharmacological and non-pharmacological methods. Preventive medicines for the H/As should be carefully selected because of their side effect profiles. Acute attacks of migraines can be treated with medications such as triptans. Patients with MS who have migraine H/As should be educated about the phenomenon of overuse H/As, keeping headache journals, avoiding stress, and monitoring sleeping habits. The presence of depression in patients with MS and migraine affects quality of life (QOL) and should also be addressed for better outcomes.
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Ceruti S. What role does multiple sclerosis play in the development of untreatable painful conditions? Pain Manag 2018; 8:37-44. [DOI: 10.2217/pmt-2017-0038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Clinical data outline the high incidence of pain syndromes in patients with multiple sclerosis, with a significant prevalence of craniofacial manifestations, including trigeminal neuralgia and migraine, which are very difficult to be managed pharmacologically. The common explanation of a localization of demyelinating plaques in areas devoted to pain modulation and integration as a trigger for pain development seems now partially unsatisfactory, since pain is often manifested well before the clinical signs of the pathology and its severity does not correlate with disease progression. This review focuses on additional mechanisms which could be at the basis of pain development in multiple sclerosis, whose identification will help identifying new targets to design more effective analgesic strategies.
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Affiliation(s)
- Stefania Ceruti
- Department of Pharmacological & Biomolecular Sciences – DiSFeB Università degli Studi di Milano, Via Balzaretti, 9-20133 Milan, Italy
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Evidence of an inverse correlation between serotonergic activity and spreading depression propagation in the rat cortex. Brain Res 2017; 1672:29-34. [DOI: 10.1016/j.brainres.2017.07.011] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 07/12/2017] [Accepted: 07/14/2017] [Indexed: 11/19/2022]
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Simulation of spreading depolarization trajectories in cerebral cortex: Correlation of velocity and susceptibility in patients with aneurysmal subarachnoid hemorrhage. NEUROIMAGE-CLINICAL 2017; 16:524-538. [PMID: 28948141 PMCID: PMC5602748 DOI: 10.1016/j.nicl.2017.09.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 08/23/2017] [Accepted: 09/05/2017] [Indexed: 11/23/2022]
Abstract
In many cerebral grey matter structures including the neocortex, spreading depolarization (SD) is the principal mechanism of the near-complete breakdown of the transcellular ion gradients with abrupt water influx into neurons. Accordingly, SDs are abundantly recorded in patients with traumatic brain injury, spontaneous intracerebral hemorrhage, aneurysmal subarachnoid hemorrhage (aSAH) and malignant hemispheric stroke using subdural electrode strips. SD is observed as a large slow potential change, spreading in the cortex at velocities between 2 and 9 mm/min. Velocity and SD susceptibility typically correlate positively in various animal models. In patients monitored in neurocritical care, the Co-Operative Studies on Brain Injury Depolarizations (COSBID) recommends several variables to quantify SD occurrence and susceptibility, although accurate measures of SD velocity have not been possible. Therefore, we developed an algorithm to estimate SD velocities based on reconstructing SD trajectories of the wave-front's curvature center from magnetic resonance imaging scans and time-of-SD-arrival-differences between subdural electrode pairs. We then correlated variables indicating SD susceptibility with algorithm-estimated SD velocities in twelve aSAH patients. Highly significant correlations supported the algorithm's validity. The trajectory search failed significantly more often for SDs recorded directly over emerging focal brain lesions suggesting in humans similar to animals that the complexity of SD propagation paths increase in tissue undergoing injury. An algorithm has been developed to estimate spreading depolarization (SD) velocities in neurocritical care. The algorithm is based on reconstructing SD trajectories of the wave-front's curvature center. It utilizes MRI scans and time-of-SD-arrival-differences between subdural electrode pairs. Variables indicating SD susceptibility correlated with algorithm-estimated SD velocities. The findings establish the opportunity to exploit the SD velocity as part of the multimodal assessment in neurocritical care.
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Key Words
- 3D, three dimensional
- AC, alternating current
- ADC, apparent diffusion coefficient
- COSBID, Co-Operative Studies on Brain Injury Depolarizations
- CT, computed tomography
- Cytotoxic edema
- DC, direct current
- DWI, diffusion-weighted imaging
- E, electrode
- ECoG, electrocorticography
- FLAIR, fluid-attenuated inversion recovery
- HU, Hounsfield units
- ICH, intracerebral hemorrhage
- IOS, intrinsic optical signal
- Ischemia
- MCA, middle cerebral artery
- MHS, malignant hemispheric stroke
- MPRAGE, magnetization prepared rapid gradient echo
- MRI, magnetic resonance imaging
- NO, nitric oxide
- PTDDD, peak total SD-induced depression duration of a recording day
- R_diff, radius difference
- SAH, subarachnoid hemorrhage
- SD, spreading depolarization
- SPC, slow potential change
- Spreading depression
- Stroke
- Subarachnoid hemorrhage
- TBI, traumatic brain injury
- TOAD, time-of-SD-arrival-difference
- Traumatic brain injury
- V_diff, velocity difference
- WFNS, World Federation of Neurosurgical Societies
- aSAH, aneurysmal subarachnoid hemorrhage
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Kaufmann D, Theriot JJ, Zyuzin J, Service CA, Chang JC, Tang YT, Bogdanov VB, Multon S, Schoenen J, Ju YS, Brennan KC. Heterogeneous incidence and propagation of spreading depolarizations. J Cereb Blood Flow Metab 2017; 37:1748-1762. [PMID: 27562866 PMCID: PMC5435294 DOI: 10.1177/0271678x16659496] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2016] [Revised: 05/27/2016] [Accepted: 06/06/2016] [Indexed: 12/17/2022]
Abstract
Spreading depolarizations are implicated in a diverse set of neurologic diseases. They are unusual forms of nervous system activity in that they propagate very slowly and approximately concentrically, apparently not respecting the anatomic, synaptic, functional, or vascular architecture of the brain. However, there is evidence that spreading depolarizations are not truly concentric, isotropic, or homogeneous, either in space or in time. Here we present evidence from KCl-induced spreading depolarizations, in mouse and rat, in vivo and in vitro, showing the great variability that these depolarizations can exhibit. This variability can help inform the mechanistic understanding of spreading depolarizations, and it has implications for their phenomenology in neurologic disease.
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Affiliation(s)
- Dan Kaufmann
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - Jeremy J Theriot
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
- Department of Neurology, University of California Los Angeles, Los Angeles, CA, USA
| | - Jekaterina Zyuzin
- Department of Neurology, University of California Los Angeles, Los Angeles, CA, USA
| | - C Austin Service
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
| | - Joshua C Chang
- Rehabilitation Medicine Department, Mark O. Hatfield Clinical Research Center, National Institutes of Health, Bethesda, MD, USA
- Mathematical Biosciences Institute, The Ohio State University, Columbus, OH, USA
| | - Y Tanye Tang
- Department of Mechanical and Aerospace Engineering, University of California Los Angeles, Los Angeles, CA, USA
| | - Vladimir B Bogdanov
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
- Department of Neurology, University of Liège, Liège, Belgium
| | - Sylvie Multon
- Department of Neurology, University of Liège, Liège, Belgium
| | - Jean Schoenen
- Department of Neurology, University of Liège, Liège, Belgium
| | - Y Sungtaek Ju
- Department of Mechanical and Aerospace Engineering, University of California Los Angeles, Los Angeles, CA, USA
| | - KC Brennan
- Department of Neurology, University of Utah, Salt Lake City, UT, USA
- Department of Neurology, University of California Los Angeles, Los Angeles, CA, USA
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Neonatal l-glutamine modulates anxiety-like behavior, cortical spreading depression, and microglial immunoreactivity: analysis in developing rats suckled on normal size- and large size litters. Amino Acids 2016; 49:337-346. [DOI: 10.1007/s00726-016-2365-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Accepted: 11/11/2016] [Indexed: 12/19/2022]
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35
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Medeiros LDB, Vitor-de-Lima SM, Lira Benevides RDD, do Egypto Queiroga RDCR, Araújo Guedes RC. Neonatal administration of goat whey modulates memory and cortical spreading depression in rats previously suckled under different litter sizes: Possible role of sialic acid. Nutr Neurosci 2016; 21:108-115. [DOI: 10.1080/1028415x.2016.1227762] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Marinho de Souza TK, E Silva-Gondim MB, Rodrigues MCA, Guedes RCA. The facilitating effect of unfavorable lactation on the potentiation of electrocorticogram after spreading depression in awake and anesthetized adult rats. Nutr Neurosci 2016; 21:16-24. [PMID: 27442245 DOI: 10.1080/1028415x.2016.1210878] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
OBJECTIVES Cortical spreading depression (CSD) is a brain excitability-related phenomenon that can be affected by unfavorable conditions of lactation and by anesthetic agents. We have previously demonstrated that after CSD the electrocorticogram (ECoG) amplitude increases significantly (ECoG potentiation). Here, we investigated this potentiation in awake and anesthetized adult rats that were previously suckled among different lactation conditions. METHODS Newborn rats were suckled in litters with 6 pups or 12 pups (L6 or L12 condition, respectively). At adulthood, we evaluated the ECoG potentiation after CSD at two cortical points (one point near, and another remote to the CSD-eliciting site). The amplitude of the ECoG waves was averaged with the support of an algorithm implemented in Matlab™ software. In both L6 and L12 condition, awake animals were compared with anesthetized groups that received either tribromoethanol- or urethane + chloralose-anesthesia. RESULTS L12 rats presented significantly lower body- and brain weights than L6 rats (P < 0.01), indicating a nutritional deficiency. The anesthetized L6 groups presented with ECoG potentiation (P < 0.05) only in the near cortical recording point (28.0% and 32.6% increase for the tribromoethanol and urethane + chloralose groups, respectively), whereas the L12 groups displayed ECoG potentiation in both near (67.0% and 55.0%) and remote points (37.0% and 20.0%), in comparison with the baseline values (before CSD). DISCUSSION The results suggest a facilitating effect of unfavorable lactation on the potentiation of ECoG after spreading depression in anesthetized adult rats. The potential implications for the human neurological health remain to be investigated.
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Affiliation(s)
| | | | | | - Rubem Carlos Araújo Guedes
- a Department of Nutrition , Universidade Federal de Pernambuco , BR-50670901 , Recife - Pernambuco , Brazil
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Guey S, Mawet J, Hervé D, Duering M, Godin O, Jouvent E, Opherk C, Alili N, Dichgans M, Chabriat H. Prevalence and characteristics of migraine in CADASIL. Cephalalgia 2016; 36:1038-1047. [PMID: 26646784 DOI: 10.1177/0333102415620909] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Background and objective Migraine with aura (MA) is a major symptom of cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL). We assessed the spectrum of migraine symptoms and their potential correlates in a large prospective cohort of CADASIL individuals. Methods A standardized questionnaire was used in 378 CADASIL patients for assessing headache symptoms, trigger factors, age at first attack, frequency of attacks and associated symptoms. MRI lesions and brain atrophy were quantified. Results A total of 54.5% of individuals had a history of migraine, mostly MA in 84% of them; 62.4% of individuals with MA were women and age at onset of MA was lower in women than in men. Atypical aura symptoms were experienced by 59.3% of individuals with MA, and for 19.7% of patients with MA the aura was never accompanied by headache. MA was the inaugural manifestation in 41% of symptomatic patients and an isolated symptom in 12.1% of individuals. Slightly higher MMSE and MDRS scores and lower Rankin score were detected in the MA group. Conclusion MA is observed in almost half of all CADASIL patients. Atypical aura symptoms are reported by more than one in two of them. MA is often inaugural, can remain isolated and is not associated with the severity of the disorder.
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Affiliation(s)
- Stephanie Guey
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France.,2 INSERM, UMR 1161, France
| | - Jérôme Mawet
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France.,3 Emergency Headache Center, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France
| | - Dominique Hervé
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France.,2 INSERM, UMR 1161, France
| | - Marco Duering
- 4 Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University, Germany
| | - Ophelia Godin
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France
| | - Eric Jouvent
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France.,2 INSERM, UMR 1161, France
| | | | - Nassira Alili
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France
| | - Martin Dichgans
- 4 Institute for Stroke and Dementia Research, Klinikum der Universität München, Ludwig-Maximilians-University, Germany.,6 Munich Cluster for Systems Neurology (SyNergy), Germany
| | - Hugues Chabriat
- 1 Department of Neurology, GH Saint-Louis-Lariboisière, Assistance Publique des Hôpitaux de Paris APHP, Université Paris Denis Diderot and DHU NeuroVasc Sorbonne Paris-Cité, France.,2 INSERM, UMR 1161, France
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Jørgensen KN, Nerland S, Norbom LB, Doan NT, Nesvåg R, Mørch-Johnsen L, Haukvik UK, Melle I, Andreassen OA, Westlye LT, Agartz I. Increased MRI-based cortical grey/white-matter contrast in sensory and motor regions in schizophrenia and bipolar disorder. Psychol Med 2016; 46:1971-1985. [PMID: 27049014 DOI: 10.1017/s0033291716000593] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Schizophrenia and bipolar disorder share genetic risk factors and one possible illness mechanism is abnormal myelination. T1-weighted magnetic resonance imaging (MRI) tissue intensities are sensitive to myelin content. Therefore, the contrast between grey- and white-matter intensities may reflect myelination along the cortical surface. METHOD MRI images were obtained from patients with schizophrenia (n = 214), bipolar disorder (n = 185), and healthy controls (n = 278) and processed in FreeSurfer. The grey/white-matter contrast was computed at each vertex as the difference between average grey-matter intensity (sampled 0-60% into the cortical ribbon) and average white-matter intensity (sampled 0-1.5 mm into subcortical white matter), normalized by their average. Group differences were tested using linear models covarying for age and sex. RESULTS Patients with schizophrenia had increased contrast compared to controls bilaterally in the post- and precentral gyri, the transverse temporal gyri and posterior insulae, and in parieto-occipital regions. In bipolar disorder, increased contrast was primarily localized in the left precentral gyrus. There were no significant differences between schizophrenia and bipolar disorder. Findings of increased contrast remained after adjusting for cortical area, thickness, and gyrification. We found no association with antipsychotic medication dose. CONCLUSIONS Increased contrast was found in highly myelinated low-level sensory and motor regions in schizophrenia, and to a lesser extent in bipolar disorder. We propose that these findings indicate reduced intracortical myelin. In accordance with the corollary discharge hypothesis, this could cause disinhibition of sensory input, resulting in distorted perceptual processing leading to the characteristic positive symptoms of schizophrenia.
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Affiliation(s)
- K N Jørgensen
- Department of Psychiatric Research,Diakonhjemmet Hospital,Oslo,Norway
| | - S Nerland
- Department of Psychiatric Research,Diakonhjemmet Hospital,Oslo,Norway
| | - L B Norbom
- Department of Psychiatric Research,Diakonhjemmet Hospital,Oslo,Norway
| | - N T Doan
- NORMENT and K. G. Jebsen Center for Psychosis Research, Institute of Clinical Medicine, University of Oslo,Norway
| | - R Nesvåg
- Norwegian Institute of Public Health,Oslo,Norway
| | - L Mørch-Johnsen
- Department of Psychiatric Research,Diakonhjemmet Hospital,Oslo,Norway
| | - U K Haukvik
- Department of Psychiatric Research,Diakonhjemmet Hospital,Oslo,Norway
| | - I Melle
- NORMENT and K. G. Jebsen Center for Psychosis Research, Institute of Clinical Medicine, University of Oslo,Norway
| | - O A Andreassen
- NORMENT and K. G. Jebsen Center for Psychosis Research, Institute of Clinical Medicine, University of Oslo,Norway
| | - L T Westlye
- NORMENT and K. G. Jebsen Center for Psychosis Research, Institute of Clinical Medicine, University of Oslo,Norway
| | - I Agartz
- Department of Psychiatric Research,Diakonhjemmet Hospital,Oslo,Norway
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Chung DY, Oka F, Ayata C. Spreading Depolarizations: A Therapeutic Target Against Delayed Cerebral Ischemia After Subarachnoid Hemorrhage. J Clin Neurophysiol 2016; 33:196-202. [PMID: 27258442 PMCID: PMC4894342 DOI: 10.1097/wnp.0000000000000275] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Delayed cerebral ischemia is the most feared cause of secondary injury progression after subarachnoid hemorrhage. Initially thought to be a direct consequence of large artery spasm and territorial ischemia, recent data suggests that delayed cerebral ischemia represents multiple concurrent and synergistic mechanisms, including microcirculatory dysfunction, inflammation, and microthrombosis. Among these mechanisms, spreading depolarizations (SDs) are arguably the most elusive and underappreciated in the clinical setting. Although SDs have been experimentally detected and examined since the late 1970s, their widespread occurrence in human brain was not unequivocally demonstrated until relatively recently. We now know that SDs occur with very high incidence in human brain after ischemic or hemorrhagic stroke and trauma, and worsen outcomes by increasing metabolic demand, decreasing blood supply, predisposing to seizure activity, and possibly worsening brain edema. In this review, we discuss the causes and consequences of SDs in injured brain. Although much of our mechanistic knowledge comes from experimental models of focal cerebral ischemia, clinical data suggest that the same principles apply regardless of the mode of injury (i.e., ischemia, hemorrhage, or trauma). The hope is that a better fundamental understanding of SDs will lead to novel therapeutic interventions to prevent SD occurrence and its adverse consequences contributing to injury progression in subarachnoid hemorrhage and other forms of acute brain injury.
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Affiliation(s)
- David Y. Chung
- Neurovascular Research Unit, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA
- Stroke Service and Neuroscience Intensive Care Unit, Department of Neurology Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Fumiaki Oka
- Neurovascular Research Unit, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA
- Department of Neurosurgery, Yamaguchi University School of Medicine, Ube, Japan
| | - Cenk Ayata
- Neurovascular Research Unit, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Charlestown, MA
- Stroke Service and Neuroscience Intensive Care Unit, Department of Neurology Massachusetts General Hospital, Harvard Medical School, Boston, MA
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Weier K, Banwell B, Cerasa A, Collins DL, Dogonowski AM, Lassmann H, Quattrone A, Sahraian MA, Siebner HR, Sprenger T. The role of the cerebellum in multiple sclerosis. THE CEREBELLUM 2016; 14:364-74. [PMID: 25578034 DOI: 10.1007/s12311-014-0634-8] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In multiple sclerosis (MS), cerebellar signs and symptoms as well as cognitive dysfunction are frequent and contribute to clinical disability with only poor response to symptomatic treatment. The current consensus paper highlights the broad range of clinical signs and symptoms of MS patients, which relate to cerebellar dysfunction. There is considerable evidence of cerebellar involvement in MS based on clinical, histopathological as well as structural and functional magnetic resonance imaging (MRI) studies. The review of the recent literature, however, also demonstrates a high variability of results. These discrepancies are, at least partially, caused by the use of different techniques and substantial heterogeneity among the patient cohorts in terms of disease duration, number of patients, and progressive vs. relapsing disease courses. Moreover, the majority of studies were cross-sectional, providing little insight into the dynamics of cerebellar involvement in MS. Some links between the histopathological changes, the structural and functional abnormalities as captured by MRI, cerebellar dysfunction, and the clinical consequences are starting to emerge and warrant further study. A consensus is formed that this line of research will benefit from advances in neuroimaging techniques that allow to trace cerebellar involvement at higher resolution. Using a prospective study design, multimodal high-resolution cerebellar imaging is highly promising, particularly in patients who present with radiologically or clinically isolated syndromes or newly diagnosed MS.
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Affiliation(s)
- Katrin Weier
- McConnell Brain Imaging Center, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada,
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Neonatal taurine and alanine modulate anxiety-like behavior and decelerate cortical spreading depression in rats previously suckled under different litter sizes. Amino Acids 2015; 47:2437-45. [DOI: 10.1007/s00726-015-2036-8] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Accepted: 06/17/2015] [Indexed: 11/26/2022]
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Yoshida K, Xu M, Natsubori A, Mimura M, Takata N, Tanaka KF. Identification of the extent of cortical spreading depression propagation by Npas4 mRNA expression. Neurosci Res 2015; 98:1-8. [PMID: 25912092 DOI: 10.1016/j.neures.2015.04.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/06/2015] [Accepted: 04/14/2015] [Indexed: 01/03/2023]
Abstract
Cortical spreading depression (CSD) is a phenomenon associated with a propagating large shift in direct current (DC) potential followed by suppression of electrophysiological activity. For temporal analysis of CSD propagation, electrophysiological recording is the most reliable tool. However, it is difficult to completely identify the spatial area of the brain influenced by CSD, because recording sites are technically limited. Histological post hoc identification of activated neurons by labeling the induction of an immediate early gene (IEG) could determine areas of CSD propagation. We found that cortical application of potassium chloride induced expression of Npas4 IEG mRNA in the ipsilateral dorsal cortex. Interestingly, induction of Npas4 was never observed in the ipsilateral hippocampus and there was a clear boundary to the area of Npas4 expression. To determine whether the boundary of the area of Npas4 mRNA expression was the limit of CSD propagation, we recorded local field potentials from multiple sites that crossed the boundary of Npas4 expression. We found that the area of Npas4 mRNA expression coincided with the area of DC-potential shift propagation. We propose that induction of Npas4 identifies the area influenced by CSD propagation.
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Affiliation(s)
- Keitaro Yoshida
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Ming Xu
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Akiyo Natsubori
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Masaru Mimura
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Norio Takata
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo 160-8582, Japan
| | - Kenji F Tanaka
- Department of Neuropsychiatry, School of Medicine, Keio University, Tokyo 160-8582, Japan.
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Pusic AD, Mitchell HM, Kunkler PE, Klauer N, Kraig RP. Spreading depression transiently disrupts myelin via interferon-gamma signaling. Exp Neurol 2015; 264:43-54. [PMID: 25500111 PMCID: PMC4324018 DOI: 10.1016/j.expneurol.2014.12.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Revised: 11/24/2014] [Accepted: 12/02/2014] [Indexed: 01/31/2023]
Abstract
Multiple sclerosis and migraine with aura are clinically correlated and both show imaging changes suggestive of myelin disruption. Furthermore, cortical myelin loss in the cuprizone animal model of multiple sclerosis enhances susceptibility to spreading depression, the likely underlying cause of migraine with aura. Since multiple sclerosis pathology involves inflammatory T cell lymphocyte production of interferon-gamma and a resulting increase in oxidative stress, we tested the hypothesis that spreading depression disrupts myelin through similar signaling pathways. Rat hippocampal slice cultures were initially used to explore myelin loss in spreading depression, since they contain T cells, and allow for controlled tissue microenvironment. These experiments were then translated to the in vivo condition in neocortex. Spreading depression in slice cultures induced significant loss of myelin integrity and myelin basic protein one day later, with gradual recovery by seven days. Myelin basic protein loss was abrogated by T cell depletion, neutralization of interferon-gamma, and pharmacological inhibition of neutral sphingomyelinase-2. Conversely, one day after exposure to interferon-gamma, significant reductions in spreading depression threshold, increases in oxidative stress, and reduced levels of glutathione, an endogenous neutral sphingomyelinase-2 inhibitor, emerged. Similarly, spreading depression triggered significant T cell accumulation, sphingomyelinase activation, increased oxidative stress, and reduction of gray and white matter myelin in vivo. Myelin disruption is involved in spreading depression, thereby providing pathophysiological links between multiple sclerosis and migraine with aura. Myelin disruption may promote spreading depression by enhancing aberrant excitability. Thus, preservation of myelin integrity may provide novel therapeutic targets for migraine with aura.
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Affiliation(s)
- Aya D Pusic
- Department of Neurology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA; The Committee on Neurobiology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA.
| | - Heidi M Mitchell
- Department of Neurology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA.
| | - Phillip E Kunkler
- Department of Neurology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA.
| | - Neal Klauer
- Department of Neurology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA.
| | - Richard P Kraig
- Department of Neurology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA; The Committee on Neurobiology, The University of Chicago Medical Center, 5841 South Maryland Avenue, Chicago, IL 60637-1470, USA.
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Status migrainosus as an initial presentation of multiple sclerosis. SPRINGERPLUS 2015; 4:28. [PMID: 25646151 PMCID: PMC4308583 DOI: 10.1186/s40064-015-0818-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 01/14/2015] [Indexed: 01/03/2023]
Abstract
Background Demyelinating plaques may induce headache through disruption of the pathways, which are implicated in the pathogeneses of migraine. We report a case of 25-year-old female patient, who presented with status migrainosus fulfilling the criteria of international classification of headache disorder. She was eventually diagnosed with multiple sclerosis (MS) after an extensive work-up and long-term clinical and radiological follow-up. Findings At the onset of status migrainosus, magnetic resonance imaging (MRI) revealed the presence of several demyelinating lesions fulfilling Swanton criteria. She was started on migraine prophylactic treatment but there was no subsequent response. One year later, she presented with recurrent status migrainosus and a follow-up MRI revealed multiple gadolinium-enhancing lesions in the brain. She was treated with abortive migraine medications. Within the following 2 year, she developed ascending parasthesia and weakness of both lower limbs indicative of incomplete transverse myelitis in association with recurrent status migrainosus. A diagnosis of MS was established based on a follow-up MRI that satisfied the revised 2010 McDonald criteria. Both the headache and neurological signs improved with IV methylprednisolone therapy. Her headache entered remission after initiation of a disease modifying therapy. Conclusion Status migrainosus can be the initial presentation of MS. Unresponsiveness to migraine prophylactic therapy in the presence of active demyelinating plaque in MRI brain may pose a diagnostic challenge and a diagnosis of MS might be considered.
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Neonatal dexamethasone accelerates spreading depression in the rat, and antioxidant vitamins counteract this effect. Brain Res 2014; 1591:93-101. [DOI: 10.1016/j.brainres.2014.09.075] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2014] [Revised: 09/29/2014] [Accepted: 09/30/2014] [Indexed: 12/27/2022]
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Prooxidant versus antioxidant brain action of ascorbic acid in well-nourished and malnourished rats as a function of dose: A cortical spreading depression and malondialdehyde analysis. Neuropharmacology 2014; 86:155-60. [DOI: 10.1016/j.neuropharm.2014.06.027] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/25/2014] [Accepted: 06/27/2014] [Indexed: 11/21/2022]
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Neuropathic pain-induced depressive-like behavior and hippocampal neurogenesis and plasticity are dependent on TNFR1 signaling. Brain Behav Immun 2014; 41:65-81. [PMID: 24938671 PMCID: PMC4167189 DOI: 10.1016/j.bbi.2014.04.003] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 04/07/2014] [Accepted: 04/08/2014] [Indexed: 02/07/2023] Open
Abstract
Patients suffering from neuropathic pain have a higher incidence of mood disorders such as depression. Increased expression of tumor necrosis factor (TNF) has been reported in neuropathic pain and depressive-like conditions and most of the pro-inflammatory effects of TNF are mediated by the TNF receptor 1 (TNFR1). Here we sought to investigate: (1) the occurrence of depressive-like behavior in chronic neuropathic pain and the associated forms of hippocampal plasticity, and (2) the involvement of TNFR1-mediated TNF signaling as a possible regulator of such events. Neuropathic pain was induced by chronic constriction injury of the sciatic nerve in wild-type and TNFR1(-/-) mice. Anhedonia, weight loss and physical state were measured as symptoms of depression. Hippocampal neurogenesis, neuroplasticity, myelin remodeling and TNF/TNFRs expression were analyzed by immunohistochemical analysis and western blot assay. We found that neuropathic pain resulted in the development of depressive symptoms in a time dependent manner and was associated with profound hippocampal alterations such as impaired neurogenesis, reduced expression of neuroplasticity markers and myelin proteins. The onset of depressive-like behavior also coincided with increased hippocampal levels of TNF, and decreased expression of TNF receptor 2 (TNFR2), which were all fully restored after mice spontaneously recovered from pain. Notably, TNFR1(-/-) mice did not develop depressive-like symptoms after injury, nor were there changes in hippocampal neurogenesis and plasticity. Our data show that neuropathic pain induces a cluster of depressive-like symptoms and profound hippocampal plasticity that are dependent on TNF signaling through TNFR1.
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Martens-Mantai T, Speckmann EJ, Gorji A. Propagation of cortical spreading depression into the hippocampus: The role of the entorhinal cortex. Synapse 2014; 68:574-584. [PMID: 25049108 DOI: 10.1002/syn.21769] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 07/03/2014] [Accepted: 07/16/2014] [Indexed: 12/27/2022]
Abstract
Propagation of cortical spreading depression (CSD) to the subcortical structures could be the underlying mechanism of some neurological deficits in migraine with aura. The entorhinal cortex (EC) as a gray matter bridge between the neocortex and subcortical regions plays an important role in this propagation. In vitro combined neocortex-hippocampus brain slices were used to study the propagation pattern of CSD between the neocortex and the hippocampus. The effects of different compounds as well as tetanic electrical stimulations in the EC on propagation of CSD to the hippocampus were investigated. Repetitive induction of CSD by KCl injection in the somatosensory cortex enhanced the probability of CSD entrance to the hippocampus via EC. Local application of AMPA receptor blocker CNQX and cannabinoid receptor agonist WIN 55212-2 in EC facilitated the propagation of CSD to the hippocampus, whereas application of NMDA receptor blocker APV and GABAA receptor blocker bicuculline in this region reduced the probability of CSD penetration to the hippocampus. Application of tetanic stimulation in EC also facilitated the propagation of CSD entrance to the hippocampus. Our data suggest the importance of synaptic plasticity of EC in filtering the propagation of CSD into subcortical structures and possibly the occurrence of concomitant neurological deficits. Synapse 68:574-584, 2014. © 2014 Wiley Periodicals, Inc.
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Affiliation(s)
- Tanja Martens-Mantai
- Institute of Neurophysiology, Westfälische Wilhelms-Universität Münster, Germany
| | | | - Ali Gorji
- Institute of Neurophysiology, Westfälische Wilhelms-Universität Münster, Germany.,Department of Neurosurgery and Neurology, Epilepsy Research Center, Westfälische Wilhelms-Universität Münster, Germany.,Shefa Neuroscience Research Center, Tehran, Iran
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Migraineurs without aura show microstructural abnormalities in the cerebellum and frontal lobe. THE CEREBELLUM 2014; 12:812-8. [PMID: 23703313 DOI: 10.1007/s12311-013-0491-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The involvement of the cerebellum in migraine pathophysiology is not well understood. We used a biparametric approach at high-field MRI (3 T) to assess the structural integrity of the cerebellum in 15 migraineurs with aura (MWA), 23 migraineurs without aura (MWoA), and 20 healthy controls (HC). High-resolution T1 relaxation maps were acquired together with magnetization transfer images in order to probe microstructural and myelin integrity. Clusterwise analysis was performed on T1 and magnetization transfer ratio (MTR) maps of the cerebellum of MWA, MWoA, and HC using an ANOVA and a non-parametric clusterwise permutation F test, with age and gender as covariates and correction for familywise error rate. In addition, mean MTR and T1 in frontal regions known to be highly connected to the cerebellum were computed. Clusterwise comparison among groups showed a cluster of lower MTR in the right Crus I of MWoA patients vs. HC and MWA subjects (p = 0.04). Univariate and bivariate analysis on T1 and MTR contrasts showed that MWoA patients had longer T1 and lower MTR in the right and left pars orbitalis compared to MWA (p < 0.01 and 0.05, respectively), but no differences were found with HC. Lower MTR and longer T1 point at a loss of macromolecules and/or micro-edema in Crus I and pars orbitalis in MWoA patients vs. HC and vs. MWA. The pathophysiological implications of these findings are discussed in light of recent literature.
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Lima CB, Soares GDSF, Vitor SM, Andrade-da-Costa BLDS, Castellano B, Guedes RCA. Spreading depression features and Iba1 immunoreactivity in the cerebral cortex of developing rats submitted to treadmill exercise after treatment with monosodium glutamate. Int J Dev Neurosci 2013; 33:98-105. [PMID: 24374255 DOI: 10.1016/j.ijdevneu.2013.12.008] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 11/09/2013] [Accepted: 12/18/2013] [Indexed: 12/18/2022] Open
Abstract
Physical exercise and excessive consumption of monosodium glutamate (MSG) can affect the morphological and electrophysiological organization of the brain during development. However, the interaction of both factors remains unclear. We analyzed the effect of this interaction on the excitability-related phenomenon known as cortical spreading depression (CSD) and the microglial reaction expressed as Iba1-immunolabeled cells in the rat motor cortex. MSG (2g/kg or 4g/kg) was administered every other day during the first 14 postnatal days. Treadmill exercise started at 21-23 days of life and lasted 3 weeks, 5 days/week, for 30min/day. At 45-60 days, CSD was recorded for 4h at two cortical points and the CSD parameters (velocity, amplitude, and duration of the negative potential change) calculated. Confirming previous observations, exercised rats presented with lower CSD velocities (3.29±0.18mm/min) than the sedentary group (3.80±0.18mm/min; P<0.05). MSG increased CSD velocities in the exercised rats compared to saline-treated and exercised animals in a dose-dependent manner (3.49±0.19, 4.05±0.18, and 3.27±0.26 for 2g/kg MSG, 4g/kg MSG, and saline, respectively; P<0.05). The amplitude (ranging from 14.3±5.9 to 18.7±6.2mV) and duration (46.7±11.1 to 60.5±11.6s) of the negative slow potential shift of the CSD were similar in all groups. Both exercise and MSG treatment increased Iba1 immunolabeling. The results confirm that physical exercise decelerates CSD propagation. However, it does not impede the CSD-accelerating action of MSG. These effects were accompanied by a cortical microglia reaction. Therefore, the data suggest that treadmill exercise early in life can influence the development of cortical electrical activity.
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Affiliation(s)
- Cássia Borges Lima
- Department of Physiology and Pharmacology, Universidade Federal de Pernambuco, 50670901 Recife, Brazil
| | | | - Suênia Marcele Vitor
- Department of Nutrition, Universidade Federal de Pernambuco, 50670901 Recife, Brazil
| | | | - Bernardo Castellano
- Unit of Medical Histology, Institute of Neuroscience and Dept Cell Biology, Physiology and Immunology, Autonomous University of Barcelona, Spain
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