Direct electrophysiological evidence that spreading depolarization-induced spreading depression is the pathophysiological correlate of the migraine aura and a review of the spreading depolarization continuum of acute neuronal mass injury
AbstractSpreading depolarization is observed as a large negative shift of the direct current potential, swelling of neuronal somas, and dendritic beading in the brain ’s gray matter and represents a state of a potentially reversible mass injury. Its hallmark is the abrupt, massive ion translocation between intraneuronal and extracellular compartment that causes water uptake (= cytotoxic edema) and massive glutamate release. Dependent on the tissue’s energy st atus, spreading depolarization can co-occur with different depression or silencing patterns of spontaneous activity. In adequately supplied tissue, spreading depolarization induces spreading depression of activity. In severely ischemic tissue, nonspreading depression of activity precedes spreading d epolarization. The depression pattern determines the neurological deficit which is either spreading such as in migraine aura or migraine stroke or nonspreading such as in transient ischemic attack or typical stroke. Although a clinical distinction between spreading and nonspreading focal neurologica l deficits is useful because they are associated with different probabilities of permanent damage, it is important to note that spreading depolarization, the neuronal injury potential, occurs in all of these conditions. Here, we first review the scientific basis of the continuum of spreading depolar izations. Second, we highlight the transition zone of the continuum from reversibility to irreversibility using clinical ...
Authors: Sabet Sarvestani F, Azarpira N Abstract Heart and cerebral infarctions, as two important ischemic diseases, lead to the death of tissues due to inadequate blood supply and high mortality worldwide. These statuses are started via blockage of vessels and depletion of oxygen and nutrients which affected these areas. After reperfusion and restoration of oxygen supply, more severe injury was mediated by multifaceted cascades of inflammation and oxidative stress. microRNAs (miRNAs) as the regulator of biological and pathological pathways can adjust these conditions by interaction with their targets. Also, miRNAs...
Publication date: Available online 9 October 2020Source: NeuropsychologiaAuthor(s): Erin L. Meier, Shannon M. Sheppard, Emily B. Goldberg, Catherine R. Head, Delaney M. Ubellacker, Alexandra Walker, Argye E. Hillis
Publication date: Available online 9 October 2020Source: Neurología (English Edition)Author(s): N. Morollón, R. Belvís, A. De Dios, N. Pagès, C. González-Oria, G. Latorre, S. Santos-Lasaosa
Publication date: Available online 9 October 2020Source: Neurología (English Edition)Author(s): J.P. Martínez-Barbero, P. Tomás-Muñoz, R. Martínez-Moreno
Publication date: October 2020Source: Brain, Behavior, and Immunity, Volume 89Author(s): Mario Gennaro Mazza, Rebecca De Lorenzo, Caterina Conte, Sara Poletti, Benedetta Vai, Irene Bollettini, Elisa Maria Teresa Melloni, Roberto Furlan, Fabio Ciceri, Patrizia Rovere-Querini, COVID-19 BioB Outpatient Clinic Study group, Francesco Benedetti
Publication date: October 2020Source: Brain, Behavior, and Immunity, Volume 89Author(s): Xiaoqin Liu, Trine Munk-Olsen, Clara Albiñana, Bjarni J. Vilhjálmsson, Emil M. Pedersen, Vivi Schlünssen, Marie Bækvad-Hansen, Jonas Bybjerg-Grauholm, Merete Nordentoft, Anders D. Børglum, Thomas Werge, David M. Hougaard, Preben B. Mortensen, Esben Agerbo
Publication date: October 2020Source: Brain, Behavior, and Immunity, Volume 89Author(s): Fernando Lopes, Fernando A. Vicentini, Nina L. Cluny, Alexander J. Mathews, Benjamin H. Lee, Wagdi A. Almishri, Lateece Griffin, William Gonçalves, Vanessa Pinho, Derek M. McKay, Simon A. Hirota, Mark G. Swain, Quentin J. Pittman, Keith A. Sharkey
Authors: Mantero V, Rigamonti A, Basilico P, Sangalli D, Scaccabarozzi C, Salmaggi A PMID: 33029982 [PubMed]
Authors: Kargiotis O, Safouris A, Psychogios K, Chondrogianni M, Andrikopoulou A, Theodorou A, Magoufis G, Stamboulis E, Tsivgoulis G PMID: 33029978 [PubMed]