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https://www.readbyqxmd.com/read/28226410/patient-specific-computational-modeling-of-cortical-spreading-depression-via-diffusion-tensor-imaging
#1
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
#2
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
#3
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 21, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28193695/cortical-spreading-depression-closes-the-paravascular-space-and-impairs-glymphatic-flow-implications-for-migraine-headache
#4
Aaron J Schain, Agustin Melo, 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 to visualize the PVS in naïve uninjected mice using 2-photon microscopy, 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 paravascular space (PVS) around surface as well as penetrating cortical arteries and veins lasting several minutes, and gradually recovering over 30 min...
February 13, 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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/28159058/migraine-and-cardiovascular-disease-in-women
#8
REVIEW
Katie M Linstra, Khatera Ibrahimi, Gisela M Terwindt, Marieke J H Wermer, Antoinette MaassenVanDenBrink
Migraine is responsible for high rates of disability. In addition, it is associated with an increased risk of cardiovascular disease. This association is not limited to the brain in the form of stroke, but includes cardiac ischemia. The increased risk is most consistently described in the female population and in particular for migraine with aura. This article reviews the current knowledge on migraine and the associated risk of cardiovascular disease, with a focus on female-specific factors.
March 2017: Maturitas
https://www.readbyqxmd.com/read/28157621/analysis-of-the-upper-cervical-spine-stiffness-during-axial-rotation-a-comparative-study-among-patients-with-tension-type-headache-or-migraine-and-asymptomatic-subjects
#9
P-M Dugailly, A Decuyper, W Salem, A De Boe, G V Espí-López, Y Lepers
BACKGROUND: Many studies reported the implication of the cervical musculoskeletal system in patients with tension type headache and migraine. The objective of this study is to investigate the upper cervical spine stiffness features in axial rotation among headache patients in comparison with a healthy population. METHODS: 48 subjects including 30 migraine patients with/without aura and 18 patients with tension-type headache, aged between 18 and 60years (mean 36, SD 11years) have been evaluated...
January 27, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28155572/exploring-the-role-of-microglia-in-cortical-spreading-depression-in-neurological-disease
#10
Mamoru Shibata, Norihiro Suzuki
Microglia play a pivotal role in innate immunity in the brain. During development, they mature from myeloerythroid progenitor cells in the yolk sac and colonize the brain to establish a resident population of tissue macrophages. In the postnatal brain, they exert phagocytosis and induce inflammatory response against invading pathogens. Microglia also act as guardians of brain homeostasis by surveying the microenvironment using motile processes. Cortical spreading depression (CSD) is a slowly propagating (2-5 mm/min) wave of rapid, near-complete depolarization of neurons and astrocytes followed by a period of electrical suppression of a distinct population of cortical neurons...
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28154971/the-sensorimotor-network-dysfunction-in-migraineurs-without-aura-a-resting-state-fmri-study
#11
Jilei Zhang, Jingjing Su, Mengxing Wang, Ying Zhao, Qi-Ting Zhang, Qian Yao, Haifeng Lu, Hui Zhang, Ge-Fei Li, Yi-Lan Wu, Yi-Sheng Liu, Feng-Di Liu, Mei-Ting Zhuang, Yan-Hui Shi, Tian-Yu Hou, Rong Zhao, Yuan Qiao, Jianqi Li, Jian-Ren Liu, Xiaoxia Du
Migraine is a common recurrent neurological disorder combining nausea, vomiting, and hypersensitivities to visual, auditory, olfactory and somatosensory stimuli. However, the dysfunction of the sensorimotor network in migraineurs has not been well clarified. In the present study, we evaluated the dysfunction of the sensorimotor network in 30 migraineurs without aura and in 31 controls by combining regional homogeneity (ReHo), amplitudes of low-frequency fluctuation (ALFF) and degree centrality (DC) analysis methods based on resting-state fMRI...
February 2, 2017: Journal of Neurology
https://www.readbyqxmd.com/read/28145727/estrogen-dependent-effects-of-5-hydroxytryptophan-on-cortical-spreading-depression-in-rat-modelling-the-serotonin-ovarian-hormone-interaction-in-migraine-aura
#12
Virginie Chauvel, Sylvie Multon, Jean Schoenen
Background Cortical spreading depression (CSD) is the likely culprit of the migraine aura. Migraine is sexually dimorphic and thought to be a "low 5-HT" condition. We sought to decipher the interrelation between serotonin, ovarian hormones and cortical excitability in a model of migraine aura. Methods Occipital KCl-induced CSDs were recorded for one hour at parieto-occipital and frontal levels in adult male (n = 16) and female rats (n = 64) one hour after intraperitoneal (i.p.) injection of 5-hydroxytryptophan (5-HTP) or NaCl...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28130625/endovascular-thrombectomy-and-post-procedural-headache
#13
Sabrina Khan, Faisal Mohammad Amin, Markus Holtmannspötter, Klaus Hansen, Anna Maria Florescu, Zainab Fakhril-Din, Julie Falkenberg Petersen, Hashmat Ghanizada, Cenk Ayata, David Gaist, Messoud Ashina
BACKGROUND: We investigated the prevalence of post-procedural headache in patients who have undergone thrombectomy for ischemic stroke, and correlated history of migraine with risk of peri-procedural complications. A total of 314 patients underwent thrombectomy at the Danish National Hospital from January 2012 to December 2014. Eligible subjects were phone-interviewed using a purpose-developed semi-structured questionnaire according to the International Classification of Headache Disorders 3, beta version criteria...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28128464/a-review-of-hormonal-contraceptives-and-migraine-with-aura-is-there-still-a-risk
#14
Lynda J Krasenbaum
No abstract text is available yet for this article.
February 2017: Headache
https://www.readbyqxmd.com/read/28124204/interictal-brain-activity-differs-in-migraine-with-and-without-aura-resting-state-fmri-study
#15
Péter Faragó, Bernadett Tuka, Eszter Tóth, Nikoletta Szabó, András Király, Gergő Csete, Délia Szok, János Tajti, Árpád Párdutz, László Vécsei, Zsigmond Tamás Kincses
BACKGROUND: Migraine is one of the most severe primary headache disorders. The nature of the headache and the associated symptoms during the attack suggest underlying functional alterations in the brain. In this study, we examined amplitude, the resting state fMRI fluctuation in migraineurs with and without aura (MWA, MWoA respectively) and healthy controls. METHODS: Resting state functional MRI images and T1 high-resolution images were acquired from all participants...
December 2017: Journal of Headache and Pain
https://www.readbyqxmd.com/read/28122382/auditory-processing-in-children-with-migraine-a-controlled-study
#16
Larissa Mendonça Agessi, Thaís Rodrigues Villa, Deusvenir de Souza Carvalho, Liliane Desgualdo Pereira
Background This study aimed to investigate central auditory processing performance in children with migraine and compared with controls without headache. Methods Twenty-eight children of both sexes, aged between 8 and 12 years, diagnosed with migraine with and without aura, and a control group of the same age range and with no headache history, were included. Gaps-in-noise (GIN), duration pattern test (DPT), synthetic sentence identification (SSI) test, and nonverbal dichotic test (NVDT) were used to assess central auditory processing performance...
January 25, 2017: Neuropediatrics
https://www.readbyqxmd.com/read/28120618/a-case-report-of-migraine-sine-headache
#17
Arens Taga, Marco Russo, Antonio Genovese, Gian Camillo Manzoni, Paola Torelli
Background and objectives We describe a case of a female patient whose otherwise "typical" migraine attacks turned into episodes with a full spectrum of associated symptoms but without headache. Case report We evaluated a 53-year-old woman with a long history of migraine without aura. In concomitance with premenopausal menstrual dysregulation, she reported episodes of nausea and vomiting, associated with photophobia, phonophobia and osmophobia, but without headache; these episodes were responsive to oral triptans...
January 1, 2017: Cephalalgia: An International Journal of Headache
https://www.readbyqxmd.com/read/28101987/delivery-outcomes-of-patients-with-acute-migraine-in-pregnancy-a-retrospective-study
#18
Tracy B Grossman, Matthew S Robbins, Shravya Govindappagari, Ashlesha K Dayal
OBJECTIVE: To describe labor and delivery outcomes in pregnant patients presenting to the hospital setting with an acute severe migraine headache attack earlier in the same gestation. METHODS: We retrospectively reviewed pregnancy and delivery records from a database of consecutive inpatient neurology consultations for acute headache in pregnant women over a 5 year period. RESULTS: We identified 86 pregnant women with acute migraine. The mean age was 29...
January 18, 2017: Headache
https://www.readbyqxmd.com/read/28079315/migraine-susceptibility-genes-in-han-chinese-of-fujian-province
#19
Qi Fang Lin, Zi Chun Chen, Xian Guo Fu, Jing Yang, Luo Yuan Cao, Long Teng Yao, Yong Tong Xin, Gen Bin Huang
BACKGROUND AND PURPOSE: Five single-nucleotide polymorphisms (SNPs) (rs4379368, rs10504861, rs10915437, rs12134493 and rs13208321) were recently identified in a Western population with migraine. These migraine-associated SNPs have not been evaluated in a Han Chinese population. This study investigated the associations of specific SNPs with migraine in a Han population. METHODS: This was a case-control study of Han Chinese residing in Fujian Province. Polymerase chain reaction-restriction-fragment-length polymorphism analysis and direct sequencing were used to characterize the relationships of SNPs in a control group of 200 subjects and in a migraine group of 201 patients...
January 2017: Journal of Clinical Neurology
https://www.readbyqxmd.com/read/28073753/migraine-and-risk-of-perioperative-ischemic-stroke-and-hospital-readmission-hospital-based-registry-study
#20
Fanny P Timm, Timothy T Houle, Stephanie D Grabitz, Anne-Louise Lihn, Janne B Stokholm, Katharina Eikermann-Haerter, Ala Nozari, Tobias Kurth, Matthias Eikermann
OBJECTIVE:  To evaluate whether patients with migraine are at increased risk of perioperative ischemic stroke and whether this may lead to an increased hospital readmission rate. DESIGN:  Prospective hospital registry study. SETTING:  Massachusetts General Hospital and two satellite campuses between January 2007 and August 2014. PARTICIPANTS:  124 558 surgical patients (mean age 52.6 years; 54.5% women). MAIN OUTCOME MEASURES:  The primary outcome was perioperative ischemic stroke occurring within 30 days after surgery in patients with and without migraine and migraine aura...
January 10, 2017: BMJ: British Medical Journal
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