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Cortical spreading depression

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https://www.readbyqxmd.com/read/28688801/new-onset-hemodialysis-related-headache-presenting-as-migraine-aura
#1
Domenico Chirchiglia, Michele Andreucci, Attilio Della Torre, Serena Marianna Lavano, Pasquale Chirchiglia, Angelo Lavano
Hemodialysis headache (HDH) is an infrequent new-onset symptom, occurring mainly in old uremic patients. Type of pain is nonspecific, occurs during hemodialysis treatment, assuming features similar to tension-type headache and representing a problem, also as regards the therapy to be taken. International Headache Society (IHS) has placed this form of headache among the headaches disorders of homeostasis. We found a case of new-onset HDH in old uremic man, presenting with migraine aura features. A similar case has not been reported in literature, placing us some questions: why and how does this happen? What are the mechanisms involved? Role of trigeminal-vascular system and cortical spreading depression as regards the aura could be considered, through the activation of neuroinflammatory events, lastly causing migraine aura...
June 29, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/28642283/selective-inhibition-of-trigeminovascular-neurons-by-fremanezumab-a-humanized-monoclonal-anti-cgrp-antibody
#2
Agustin Melo-Carrillo, Rodrigo Noseda, Rony Nir, Aaron Schain, Jennifer Stratton, Andrew M Strassman, Rami Burstein
A large body of evidence supports an important role for CGRP in migraine pathophysiology. This evidence gave rise to a global effort to develop a new generation of therapeutics that inhibit the interaction of CGRP with its receptor in migraineurs. Recently, a new class of such drugs, humanized monoclonal anti-CGRP antibodies (CGRP-mAb) were found to be effective in reducing the frequency of migraine. The purpose of this study was to better understand how the CGRP-mAb fremanezumab (TEV-48125) modulates meningeal sensory pathways...
June 22, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28612259/apoptosis-following-cortical-spreading-depression-in-juvenile-rats
#3
Ali Jahanbazi Jahan-Abad, Leila Alizadeh, Sajad Sahab Negah, Parastoo Barati, Maryam Khaleghi Ghadiri, Sven G Meuth, Stjepana Kovac, Ali Gorji
Repetitive cortical spreading depression (CSD) can lead to cell death in immature brain tissue. Caspases are involved in neuronal cell death in several CSD-related neurological disorders, such as stroke and epilepsy. Yet, whether repetitive CSD itself can induce caspase activation in adult or juvenile tissue remains unknown. Inducing repetitive CSD in somatosensory cortices of juvenile and adult rats in vivo, we thus aimed to investigate the effect of repetitive CSD on the expression caspase-3, caspase-8, caspase-9, and caspase-12 in different brain regions using immunohistochemistry and western blotting techniques...
June 13, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28560708/tonabersat-prevents-inflammatory-damage-in-the-central-nervous-system-by-blocking-connexin43-hemichannels
#4
Yeri Kim, Jarred M Griffin, Mohd N Mat Nor, Jie Zhang, Peter S Freestone, Helen V Danesh-Meyer, Ilva D Rupenthal, Monica Acosta, Louise F B Nicholson, Simon J O'Carroll, Colin R Green
The cis benzopyran compound tonabersat (SB-220453) has previously been reported to inhibit connexin26 expression in the brain by attenuating the p38-mitogen-activated protein kinase pathway. We show here that tonabersat directly inhibits connexin43 hemichannel opening. Connexin43 hemichannels have been called "pathological pores" based upon their role in secondary lesion spread, edema, inflammation, and neuronal loss following central nervous system injuries, as well as in chronic inflammatory disease. Both connexin43 hemichannels and pannexin channels released adenosine triphosphate (ATP) during ischemia in an in vitro ischemia model, but only connexin43 hemichannels contributed to ATP release during reperfusion...
May 30, 2017: Neurotherapeutics: the Journal of the American Society for Experimental NeuroTherapeutics
https://www.readbyqxmd.com/read/28542895/aura-and-other-neurologic-dysfunction-in-or-with-migraine
#5
Narayan R Kissoon, Fred Michael Cutrer
PREMISE: Migraine can present with a wide range of neurological symptoms. PROBLEM: Based on currently available data, the symptoms of typical migraine aura are most likely related to cortical spreading depression (CSD), and evidence supports that CSD can lead to trigeminovascular activation resulting in the headache phase of migraine. POTENTIAL SOLUTION: An alternative diagnosis to migraine aura should be considered if migrainous headaches present with transient neurological symptoms that have features inconsistent with aura...
May 19, 2017: Headache
https://www.readbyqxmd.com/read/28527083/shared-mechanisms-of-epilepsy-migraine-and-affective-disorders
#6
Davide Zarcone, Simona Corbetta
Since the nineteenth century several clinical features have been observed in common between migraine and epilepsy (such as episodic attacks, triggering factors, presence of aura, frequent familiarity), but only in recent years researchers have really engaged in finding a common pathogenic mechanism. From studies of disease incidence, we understand how either migraine among patients with epilepsy or epilepsy among migraine patients are more frequent than in the general population. This association may result from a direct causality, by the same environmental risk factors and/or by a common genetic susceptibility...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28527076/the-role-of-visual-system-in-migraine
#7
Stefania Bianchi Marzoli, Alessandra Criscuoli
The visual system is involved in different ways in migraine. Visual auras are the most common form of migraine aura. It may consist of positive or negative visual symptoms and cortical spreading depression is felt to be the phenomenon that underlies it. Even in migraine without aura, vision it is not totally excluded given that one of the major criteria for the diagnosis of migraine is photophobia. In persistent visual aura, patients refer symptoms defined as visual snow and television static. In retinal migraine unilateral decreased vision or complete visual loss occurs...
May 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28479338/effects-of-experimental-traumatic-brain-injury-and-impaired-glutamate-transport-on-cortical-spreading-depression
#8
Mahshid Sadat Hosseini-Zare, Feng Gu, Ahmad Abdulla, Simon Powell, Jokūbas Žiburkus
Cortical spreading depression (CSD) is associated with traumatic brain injury (TBI), stroke, migraines, and seizures. Typically, following TBIs and other insults, neuronal excitability in and around the area of the injury is affected, with reported increases in local glutamate signaling. Astrocytic glutamate transporters are critical for precise regulation of the extracellular glutamate availability. However, it remains unclear how impaired astrocytic glutamate transport or an acute TBI affect characteristics of the CSD...
May 4, 2017: Experimental Neurology
https://www.readbyqxmd.com/read/28450192/do-the-accelerating-actions-of-tianeptine-and-l-arginine-on-cortical-spreading-depression-interact-an-electrophysiological-analysis-in-young-and-adult-rats
#9
Luciana Maria Silva de Seixas Maia, Angela Amancio-Dos-Santos, Paula Catirina Pereira da Silva Germano, Anna Carolina Santos Marinho Falcão, Desirré Duda-de-Oliveira, Rubem Carlos Araújo Guedes
In the rat, we previously demonstrated that serotonin-enhancing drugs impair cortical spreading depression (CSD) and that l-arginine (arginine) treatment enhances CSD. Here, we investigated the interaction between topical application of the serotonin uptake enhancer tianeptine and systemic arginine administration on CSD. From postnatal day 7-28, female Wistar rats (n=40) received by gavage 300mg/Kg/day arginine (n=20) or water (n=20). Half of the arginine- or water-treated rats underwent CSD recording at 30-40days of age (young), while the other half was recorded at 90-120days (adult)...
April 25, 2017: Neuroscience Letters
https://www.readbyqxmd.com/read/28430860/increased-brainstem-perfusion-but-no-blood-brain-barrier-disruption-during-attacks-of-migraine-with-aura
#10
Anders Hougaard, Faisal M Amin, Casper E Christensen, Samaira Younis, Frauke Wolfram, Stig P Cramer, Henrik B W Larsson, Messoud Ashina
See Moskowitz (doi:10.1093/brain/awx099) for a scientific commentary on this article.The migraine aura is characterized by transient focal cortical disturbances causing dramatic neurological symptoms that are usually followed by migraine headache. It is currently not understood how the aura symptoms are related to the headache phase of migraine. Animal studies suggest that cortical spreading depression, the likely mechanism of migraine aura, causes disruption of the blood-brain barrier and noxious stimulation of trigeminal afferents leading to activation of brainstem nuclei and triggering of migraine headache...
June 1, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28382614/migraine-with-multiple-sensory-auras
#11
Nicodemus E Oey, Yew Long Lo
Migraine auras are typically visual in nature but can manifest as disturbances in somatosensory, auditory, and olfactory senses. Reports of multiple sensory auras are rare in the literature, but their existence may offer novel insights into the pathogenesis of this highly common yet complex neurological condition. Here we report a case of multiple sensory auras involving somatosensory, auditory, and olfactory disturbances in a patient with migraine without visual manifestations. A 45-year-old woman with a 20-year history of migrainous headaches presented with complaints of rightsided facial and hand numbness and paraesthesia...
December 15, 2016: Acta Neurologica Taiwanica
https://www.readbyqxmd.com/read/28372497/astrocyte-mediated-inflammation-in-cortical-spreading-depression
#12
Amir Ghaemi, Leila Alizadeh, Shahnaz Babaei, Maryam Jafarian, Maryam Khaleghi Ghadiri, Sven G Meuth, Stjepana Kovac, Ali Gorji
Background Cortical spreading depression (CSD) related diseases such as migraine, cerebrovascular diseases, and epilepsy have been associated with reactive astrocytosis, yet the mechanisms of these tissue changes remain unclear. CSD-induced inflammatory response has been proposed to play a role in some neurological disorders and thus may also contribute to reactive astrocytosis. Methods Using ex vivo brain slices and in vitro astrocytic cultures, we aimed to characterize CSD related changes in astrocytes and markers of inflammation by immunocyto- and immunohistochemistry...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28365776/deletion-of-aquaporin-4-curtails-extracellular-glutamate-elevation-in-cortical-spreading-depression-in-awake-mice
#13
Rune Enger, Didrik B Dukefoss, Wannan Tang, Klas H Pettersen, Daniel M Bjørnstad, P Johannes Helm, Vidar Jensen, Rolf Sprengel, Koen Vervaeke, Ole P Ottersen, Erlend A Nagelhus
Cortical spreading depression (CSD) is a phenomenon that challenges the homeostatic mechanisms on which normal brain function so critically depends. Analyzing the sequence of events in CSD holds the potential of providing new insight in the physiological processes underlying normal brain function as well as the pathophysiology of neurological conditions characterized by ionic dyshomeostasis. Here, we have studied the sequential progression of CSD in awake wild-type mice and in mice lacking aquaporin-4 (AQP4) or inositol 1,4,5-triphosphate type 2 receptor (IP3R2)...
January 1, 2017: Cerebral Cortex
https://www.readbyqxmd.com/read/28325558/l-citrulline-ameliorates-cerebral-blood-flow-during-cortical-spreading-depression-in-rats-involvement-of-nitric-oxide-and-prostanoids-mediated-pathway
#14
Yuki Kurauchi, Koichi Mokudai, Asami Mori, Kenji Sakamoto, Tsutomu Nakahara, Masahiko Morita, Ayako Kamimura, Kunio Ishii
l-Citrulline is a potent precursor of l-arginine, and exerts beneficial effect on cardiovascular system via nitric oxide (NO) production. Migraine is one of the most popular neurovascular disorder, and imbalance of cerebral blood flow (CBF) observed in cortical spreading depression (CSD) contributes to the mechanism of migraine aura. Here, we investigated the effect of l-citrulline on cardiovascular changes to KCl-induced CSD. in rats. Intravenous injection of l-citrulline prevented the decrease in CBF, monitored by laser Doppler flowmetry, without affecting mean arterial pressure and heart rate during CSD...
February 17, 2017: Journal of Pharmacological Sciences
https://www.readbyqxmd.com/read/28283957/migraine-and-stroke-what-s-the-link-what-to-do
#15
REVIEW
Anna Gryglas, Robert Smigiel
Migraine and stroke are common, disabling neurologic disorders, with a high socioeconomic burden. A link between them has been proposed years ago, and various theories have been proposed to explain this bidirectional relation. However, the precise causes remain unclear. We briefly summarize existing hypotheses of this correlation seeking for recommendations for stroke prevention in migraineurs, if any exist. Among the strongest suggested theories of migraine-stroke association are cortical spreading depression, endovascular dysfunction, vasoconstriction, neurogenic inflammation, hypercoagulability, increased prevalence of vascular risk factors, shared genetic defects, cervical artery dissection, and patent foramen ovale...
March 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28271496/genetics-of-migraine-insights-into-the-molecular-basis-of-migraine-disorders
#16
REVIEW
Heidi G Sutherland, Lyn R Griffiths
Migraine is a complex, debilitating neurovascular disorder, typically characterized by recurring, incapacitating attacks of severe headache often accompanied by nausea and neurological disturbances. It has a strong genetic basis demonstrated by rare migraine disorders caused by mutations in single genes (monogenic), as well as familial clustering of common migraine which is associated with polymorphisms in many genes (polygenic). Hemiplegic migraine is a dominantly inherited, severe form of migraine with associated motor weakness...
April 2017: Headache
https://www.readbyqxmd.com/read/28240389/increased-intrinsic-brain-connectivity-between-pons-and-somatosensory-cortex-during-attacks-of-migraine-with-aura
#17
Anders Hougaard, Faisal Mohammad Amin, Henrik B W Larsson, Egill Rostrup, Messoud Ashina
The neurological disturbances of migraine aura are caused by transient cortical dysfunction due to waves of spreading depolarization that disrupt neuronal signaling. The effects of these cortical events on intrinsic brain connectivity during attacks of migraine aura have not previously been investigated. Studies of spontaneous migraine attacks are notoriously challenging due to their unpredictable nature and patient discomfort. We investigated 16 migraine patients with visual aura during attacks and in the attack-free state using resting state fMRI...
May 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28226410/patient-specific-computational-modeling-of-cortical-spreading-depression-via-diffusion-tensor-imaging
#18
Julia M Kroos, Isabella Marinelli, Ibai Diez, Jesus M Cortes, Sebastiano Stramaglia, Luca Gerardo-Giorda
Cortical Spreading Depression (CSD), a depolarization wave originating in the visual cortex and traveling towards the frontal lobe, is commonly accepted as a correlate of migraine visual aura. As of today, little is known about the mechanisms that can trigger or stop such phenomenon. However, the complex and highly individual characteristics of the brain cortex suggest that the geometry might have a significant impact in supporting or contrasting the propagation of CSD. Accurate patient-specific computational models are fundamental to cope with the high variability in cortical geometries among individuals, but also with the conduction anisotropy induced in a given cortex by the complex neuronal organisation in the grey matter...
February 22, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28223480/in-vivo-imaging-reveals-that-pregabalin-inhibits-cortical-spreading-depression-and-propagation-to-subcortical-brain-structures
#19
Stuart M Cain, Barry Bohnet, Jeffrey LeDue, Andrew C Yung, Esperanza Garcia, John R Tyson, Sascha R A Alles, Huili Han, Arn M J M van den Maagdenberg, Piotr Kozlowski, Brian A MacVicar, Terrance P Snutch
Migraine is characterized by severe headaches that can be preceded by an aura likely caused by cortical spreading depression (SD). The antiepileptic pregabalin (Lyrica) shows clinical promise for migraine therapy, although its efficacy and mechanism of action are unclear. As detected by diffusion-weighted MRI (DW-MRI) in wild-type (WT) mice, the acute systemic administration of pregabalin increased the threshold for SD initiation in vivo. In familial hemiplegic migraine type 1 mutant mice expressing human mutations (R192Q and S218L) in the CaV2...
February 28, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28193695/cortical-spreading-depression-closes-paravascular-space-and-impairs-glymphatic-flow-implications-for-migraine-headache
#20
Aaron J Schain, Agustin Melo-Carrillo, Andrew M Strassman, Rami Burstein
Functioning of the glymphatic system, a network of paravascular tunnels through which cortical interstitial solutes are cleared from the brain, has recently been linked to sleep and traumatic brain injury, both of which can affect the progression of migraine. This led us to investigate the connection between migraine and the glymphatic system. Taking advantage of a novel in vivo method we developed using two-photon microscopy to visualize the paravascular space (PVS) in naive uninjected mice, we show that a single wave of cortical spreading depression (CSD), an animal model of migraine aura, induces a rapid and nearly complete closure of the PVS around surface as well as penetrating cortical arteries and veins lasting several minutes, and gradually recovering over 30 min...
March 15, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
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