Cortical spreading depression (CSD) is a well-characterized phenomenon in experimental animals. Recent data show that CSD actually can occur in the injured human brain and compelling evidence is accumulating to support the concept that CSD is responsible for migraine aura. The aim of this review is to highlight recent key advances regarding our understanding of CSD in animal and human studies and its relevance to the pathophysiology of migraine and its potential treatment options.
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http://dx.doi.org/10.1007/s11916-996-0016-0 | DOI Listing |
J Headache Pain
January 2025
Department of Neuroscience, Bufalini Hospital, AUSL Romagna, Cesena, Italy.
Background: The term "aura" refers to a well-defined pattern of usually positive, progressive, and reversible neurological symptoms, with spreading depolarization as the underlying mechanism. While commonly associated with migraine, aura can also occur in other neurological disorders (i.e.
View Article and Find Full Text PDFJ Headache Pain
January 2025
School of Psychology and Public Health, La Trobe University, Melbourne, VIC, 3086, Australia.
Background: Migraine is the most common complex neurological disorder, affecting over a billion people worldwide. Neurogenic inflammation has long been recognized as a key factor in the pathophysiology of migraine though little research has been directed to investigating whether inflammation is greatest in migraine with aura or without, and whether inflammation is a permanent state in migraine or whether is an event related transitory state. Thus, the primary aim of this single-centre, retrospective study was to explore the potential clinical utility of the Serial Systemic Immune-Inflammatory Indices (SSIIi) as a comparative measure of duration and severity of inflammation derived from routine blood cell counts in migraine patients with aura and no-aura both within an acute inpatient setting and as outpatients.
View Article and Find Full Text PDFElife
January 2025
Athinoula A. Martinos Center for Biomedical Imaging, Department of Radiology, Harvard Medical School, Massachusetts General Hospital, Charlestown, United States.
High-resolution awake mouse functional magnetic resonance imaging (fMRI) remains challenging despite extensive efforts to address motion-induced artifacts and stress. This study introduces an implantable radio frequency (RF) surface coil design that minimizes image distortion caused by the air/tissue interface of mouse brains while simultaneously serving as a headpost for fixation during scanning. Furthermore, this study provides a thorough acclimation method used to accustom animals to the MRI environment minimizing motion-induced artifacts.
View Article and Find Full Text PDFCephalalgia
January 2025
Department of Pharmacology, University of Arizona, Tucson, USA.
Purpose: Photophobia is a common and debilitating symptom associated with migraine. Women are disproportionately affected by migraines, with a higher prevalence and more severe symptoms compared to men. This study investigated the effects of cortical spreading depression on light-aversive and dark-seeking behaviors in a rat model, with an emphasis on sex differences.
View Article and Find Full Text PDFExp Neurol
January 2025
Department of Neurology, University of Virginia, Charlottesville, VA 22908, USA; Department of Neuroscience, University of Virginia, Charlottesville, VA 22908, USA; UVA Brain Institute, University of Virginia, Charlottesville, VA 22908, USA.
Migraine patients often experience sensory symptoms called auras accompanying the headaches. Cortical spreading depression (CSD), a slow-propagating wave of neuroglial depolarization followed by hyperpolarization is proposed to be the neurological mechanism underlying these auras. We have previously found that progesterone regulates susceptibility to migraine through progesterone receptor (PR) activation.
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