Publications by authors named "Agnes Witt"

Article Synopsis
  • This study investigates how patients with multiple sclerosis (MS) on anti-CD20 therapy respond to multiple doses of the BNT162b2 mRNA COVID-19 vaccine and the incidence of breakthrough infections.
  • It found that the percentage of participants with antibodies increased significantly after the fourth vaccine dose, but a majority still experienced breakthrough infections during the study.
  • The study concluded that while antibody levels increased post-vaccination, T-cell responses remained stable and were not affected by breakthrough infections.
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Article Synopsis
  • The study aimed to investigate how short-term ankle immobilisation affects peripheral nervous system (PNS) measures and muscle performance, using new methods like muscle velocity recovery cycles (MVRC) and motor unit number estimation (MUNE).
  • Twelve participants experienced one week of immobilization followed by two weeks of retraining, with assessments on muscle properties, strength, imaging, and walking ability conducted before and after both phases.
  • Results showed decreases in muscle action potential, strength, and walking capacity after immobilization, but these returned to baseline post-retraining; however, changes in PNS measures were minimal, suggesting that PNS does not play a significant role in these observed changes.
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Objective: To examine humoral and cellular response in multiple sclerosis patients on anti-CD20 therapy after third BNT162b2 mRNA SARS-CoV-2 vaccination.

Methods: A prospective longitudinal study design from first throughout third vaccination in Danish and American MS centers. All participants were treated with ocrelizumab.

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To assess whether trainees can learn and implement the operational definition of interictal epileptiform discharges (IEDs) of the International Federation of Clinical Neurophysiology (IFCN), based on six morphological criteria, and whether its implementation improves their diagnostic performance and inter-rater agreement (IRA). Seven trainees evaluated a balanced dataset of 70 EEG samples containing sharp transients (35 from patients with epilepsy and 35 from patients with non-epileptic paroxysmal events). The gold standard was derived from video-EEG recordings of the habitual clinical episodes.

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Although conventional nerve conduction studies (NCS) and electromyography (EMG) are suitable for the diagnosis of neuromuscular disorders, they provide limited information about muscle fiber membrane properties and underlying disease mechanisms. Muscle velocity recovery cycles (MVRCs) illustrate how the velocity of a muscle action potential depends on the time after a preceding action potential. MVRCs are closely related to changes in membrane potential that follow an action potential, thereby providing information about muscle fiber membrane properties.

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Study Design: Retrospective case series.

Objectives: The aim of this paper was to review the cases of SCI associated with human towers in the neurorehabilitation hospital Guttmann in Barcelona, clarify the mechanisms of these accidents and classify the injuries.

Settings And Methods: Data and history were retrospectively reviewed to detect SCI patients injured from human tower accidents admitted at the Guttmann Institute, Barcelona, in the period 1965-2017, from patient histories and interviews with patients and their relatives.

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Background And Purpose: Guidelines recommend carotid endarterectomy (CEA) within 2 weeks from an ischemic event. However, previous studies have shown that only a minority of patients undergo CEA within this period. The aim of this study was to examine the effect of a multidisciplinary nationwide initiative aimed at reducing time to CEA after acute ischemic stroke.

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