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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
#1
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/28295242/an-update-on-non-pharmacological-neuromodulation-for-the-acute-and-preventive-treatment-of-migraine
#2
Francesca Puledda, Peter J Goadsby
OBJECTIVE: To review current neuromodulation treatments available for migraine therapy, both in the acute and preventive setting. METHODS: The published literature was reviewed for studies reporting the effects of different neuromodulation strategies in migraine with and without aura. The use of non-invasive: single pulse transcranial magnetic stimulation, non-invasive vagal nerve stimulation, supraorbital nerve stimulation, and transcranial direct current stimulation, as well as invasive methods such as occipital nerve stimulation and sphenopalatine ganglion stimulation, are assessed...
March 13, 2017: Headache
https://www.readbyqxmd.com/read/28283958/pfo-and-migraine-is-there-a-role-for-closure
#3
REVIEW
Melissa Rayhill, Rebecca Burch
Observational studies suggest that closure of a patent foramen ovale for other indications may reduce or even eliminate migraine attacks, particularly migraine with aura. The first randomized clinical trial of patent foramen ovale (PFO) closure for prevention of migraine, the MIST trial, showed negative results. The results of the other two completed studies in this area have recently been published in the last year. PRIMA and PREMIUM were also both negative for their primary endpoints. The PREMIUM trial did show a reduction in headache days in the migraine with aura subgroup but the final results of this subset analysis have not been published...
March 2017: Current Neurology and Neuroscience Reports
https://www.readbyqxmd.com/read/28283957/migraine-and-stroke-what-s-the-link-what-to-do
#4
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/28281108/recognizing-cadasil-a-secondary-cause-of-migraine-with-aura
#5
REVIEW
John Glenn Burkett, Carrie Dougherty
PURPOSE OF REVIEW: CADASIL (cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy) is an important disease to consider in the differential diagnosis of migraine with aura. This review examines current literature regarding migraine in CADASIL, as well as diagnostic and treatment modalities. RECENT FINDINGS: Recent studies have shown that smoking is a modifiable risk factor for progression of CADASIL (Chabriat et al. in Stroke 47:4-11, 2015)...
April 2017: Current Pain and Headache Reports
https://www.readbyqxmd.com/read/28264095/association-between-migraine-and-cervical-artery-dissection-the-italian-project-on-stroke-in-young-adults
#6
Valeria De Giuli, Mario Grassi, Corrado Lodigiani, Rosalba Patella, Marialuisa Zedde, Carlo Gandolfo, Andrea Zini, Maria Luisa DeLodovici, Maurizio Paciaroni, Massimo Del Sette, Cristiano Azzini, Antonella Toriello, Rossella Musolino, Rocco Salvatore Calabrò, Paolo Bovi, Maria Sessa, Alessandro Adami, Giorgio Silvestrelli, Anna Cavallini, Simona Marcheselli, Domenico Marco Bonifati, Nicoletta Checcarelli, Lucia Tancredi, Alberto Chiti, Enrico Maria Lotti, Elisabetta Del Zotto, Giampaolo Tomelleri, Alessandra Spalloni, Elisa Giorli, Paolo Costa, Loris Poli, Andrea Morotti, Filomena Caria, Alessia Lanari, Giacomo Giacalone, Paola Ferrazzi, Alessia Giossi, Valeria Piras, Davide Massucco, Cataldo D'Amore, Filomena Di Lisi, Ilaria Casetta, Laura Cucurachi, Masina Cotroneo, Alessandro De Vito, Elisa Coloberti, Maurizia Rasura, Anna Maria Simone, Massimo Gamba, Paolo Cerrato, Giuseppe Micieli, Giovanni Malferrari, Maurizio Melis, Licia Iacoviello, Alessandro Padovani, Alessandro Pezzini
Importance: Although sparse observational studies have suggested a link between migraine and cervical artery dissection (CEAD), any association between the 2 disorders is still unconfirmed. This lack of a definitive conclusion might have implications in understanding the pathogenesis of both conditions and the complex relationship between migraine and ischemic stroke (IS). Objective: To investigate whether a history of migraine and its subtypes is associated with the occurrence of CEAD...
March 6, 2017: JAMA Neurology
https://www.readbyqxmd.com/read/28258562/the-relationship-between-migraine-headache-and-asthma-features
#7
Nigar Dirican, Seden Demirci, Munire Cakir
Migraine and asthma are comorbid chronic disorders with episodic attacks thought to involve inflammatory and neurological mechanisms. The objective of the present study is to investigate the relationship of asthma features between the asthma patients with migraine and those without migraine headache. A cross-sectional study was conducted from October 2015 to June 2016. Physician-diagnosed asthma patients aged 18 years and above were included. Demographic data, pulmonary function test and treatment of asthma were recorded...
March 3, 2017: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/28255817/family-studies-to-find-rare-high-risk-variants-in-migraine
#8
Rikke Dyhr Hansen, Anne Francke Christensen, Jes Olesen
INTRODUCTION: Migraine has long been known as a common complex disease caused by genetic and environmental factors. The pathophysiology and the specific genetic susceptibility are poorly understood. Common variants only explain a small part of the heritability of migraine. It is thought that rare genetic variants with bigger effect size may be involved in the disease. Since migraine has a tendency to cluster in families, a family approach might be the way to find these variants. This is also indicated by identification of migraine-associated loci in classical linkage-analyses in migraine families...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28251616/migraine-with-neurological-features-in-a-scuba-diver-with-a-patent-foramen-ovale
#9
Ashhar Ali, A David Rothner
Neurologic complications of decompression sickness have been observed for over half of a century. Little is known, however, about the risk of diving in patients that suffer from migraine with aura (MWA). We report the case of a pediatric patient with a history of migraine with aura, who was later found to have a PFO, who developed headache with neurological symptoms during a scuba diving lesson.
March 2, 2017: Headache
https://www.readbyqxmd.com/read/28251391/a-multicenter-open-label-long-term-safety-and-tolerability-study-of-dfn-02-an-intranasal-spray-of-sumatriptan-10%C3%A2-mg-plus-permeation-enhancer-ddm-for-the-acute-treatment-of-episodic-migraine
#10
Sagar Munjal, Elimor Brand-Schieber, Kent Allenby, Egilius L H Spierings, Roger K Cady, Alan M Rapoport
BACKGROUND: DFN-02 is a novel intranasal spray formulation composed of sumatriptan 10 mg and a permeation-enhancing excipient comprised of 0.2% 1-O-n-Dodecyl-β-D-Maltopyranoside (DDM). This composition of DFN-02 allows sumatriptan to be rapidly absorbed into the systemic circulation and exhibit pharmacokinetics comparable to subcutaneously administered sumatriptan. Rapid rate of absorption is suggested to be important for optimal efficacy. The objective of this study was to evaluate the safety and tolerability of DFN-02 (10 mg) in the acute treatment of episodic migraine with and without aura over a 6-month period based on the incidence of treatment-emergent adverse events and the evaluation of results of clinical laboratory tests, vital signs, physical examination, and electrocardiograms...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28247836/-women-with-migraine-have-an-increased-risk-of-cardiovascular-disease-what-are-the-consequences-for-the-clinical-management-of-young-patients
#11
K M Linstra, M J H Wermer, G M Terwindt
Migraine is often regarded as a debilitating headache disorder without long-term consequences. However, migraine is an important risk factor for cardiovascular disease, especially in young women who suffer from migraine with aura. This increased risk is not limited to stroke but includes cardiac disease. The absolute risk for cardiovascular disease remains low in young women, however the prevalence of migraine is particularly high in this population. Migraine should therefore be incorporated as a factor in cardiovascular risk assessment...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28241154/the-long-term-effect-of-acupuncture-for-migraine-prophylaxis-a-randomized-clinical-trial
#12
Ling Zhao, Jiao Chen, Ying Li, Xin Sun, Xiaorong Chang, Hui Zheng, Biao Gong, Yinlan Huang, Mingxiao Yang, Xi Wu, Xuezhi Li, Fanrong Liang
Importance: The long-term prophylactic effects of acupuncture for migraine are uncertain. Objective: To investigate the long-term effects of true acupuncture compared with sham acupuncture and being placed in a waiting-list control group for migraine prophylaxis. Design, Setting, and Participants: This was a 24-week randomized clinical trial (4 weeks of treatment followed by 20 weeks of follow-up). Participants were randomly assigned to true acupuncture, sham acupuncture, or a waiting-list control group...
February 20, 2017: JAMA Internal Medicine
https://www.readbyqxmd.com/read/28240389/increased-intrinsic-brain-connectivity-between-pons-and-somatosensory-cortex-during-attacks-of-migraine-with-aura
#13
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...
February 27, 2017: Human Brain Mapping
https://www.readbyqxmd.com/read/28226410/patient-specific-computational-modeling-of-cortical-spreading-depression-via-diffusion-tensor-imaging
#14
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/28224326/treatment-with-telmisartan-a-long-acting-angiotensin-ii-receptor-blocker-prevents-migraine-attacks-in-japanese-non-responders-to-lomerizine
#15
Ken Ikeda, Sayori Hanashiro, Yuichi Ishikawa, Masahiro Sawada, Maya Kyuzen, Harumi Morioka, Junya Ebina, Junpei Nagasawa, Masaru Yanagihashi, Ken Miura, Takehisa Hirayama, Takanori Takazawa, Osamu Kano, Kiyokazu Kawabe, Yasuo Iwasaki
Lomerizine, calcium channel blocker, is the most used medication for migraine prophylaxis in Japan. The effectiveness of this drug is reported as 50-75%. Telmisartan is angiotensin II receptor blockers which plasma half-life is 24 h. We examined whether telmisartan has preventative benefits in lomerizine non-responsive migraineurs. Lomerizine non-responders received telmisartan (20 mg/day) for 3 months after the investigation period of 3 months. Blood pressure, frequency of headache days/month, headache severity, and doses of triptans and analgesics were analyzed by Wilcoxon signed rank test...
February 21, 2017: Neurological Sciences
https://www.readbyqxmd.com/read/28223480/in-vivo-imaging-reveals-that-pregabalin-inhibits-cortical-spreading-depression-and-propagation-to-subcortical-brain-structures
#16
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
#17
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
https://www.readbyqxmd.com/read/28184165/visual-spatial-training-efficacy-in-children-affected-by-migraine-without-aura-a-multicenter-study
#18
Francesco Precenzano, Maria Ruberto, Lucia Parisi, Margherita Salerno, Agata Maltese, Beatrice Gallai, Rosa Marotta, Serena Marianna Lavano, Francesco Lavano, Michele Roccella
Routinely in the clinical practice, children affected by migraine without aura (MwA) tend to exhibit severe and persistent difficulties within cognitive processes such as attention, memory, and visual-motor integration (VMI) skills. The aim of this study was to assess the visual-spatial and visual-motor abilities among a sample of children with MwA and the effects of a specific computerized training. The study population was composed of 84 patients affected by MwA (39 girls and 45 boys; mean age: 8.91±2.46 years), and they were randomly divided into two groups (group A and group B) comparable for age (P=0...
2017: Neuropsychiatric Disease and Treatment
https://www.readbyqxmd.com/read/28181231/are-blurred-vision-and-short-duration-visual-phenomena-migraine-aura-symptoms
#19
Deborah I Friedman, Randolph W Evans
No abstract text is available yet for this article.
February 9, 2017: Headache
https://www.readbyqxmd.com/read/28181217/hypercoagulability-and-migraine
#20
Gretchen E Tietjen, Stuart A Collins
BACKGROUND: A growing body of literature suggests that migraineurs, particularly those with aura, have an increased risk for ischemic stroke, but not via enhanced atherosclerosis. The theory that micro-emboli induced ischemia provokes cortical spreading depression (ie, symptomatic aura) in migraineurs but transient ischemic attacks in others highlights a potential role for hypercoagulability as a link between migraine (with aura) and stroke. AIM: Our objective is to summarize the literature evaluating the association of migraine with various acquired or inheritable thrombophilic states, including those related to elevated estrogen levels, endothelial activation and dysfunction, antiphospholipid antibodies (aPL), deficiency of coagulation inhibitors, and presence of certain genetic polymorphisms...
February 9, 2017: Headache
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