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Org24598, a Selective Glycine Transporter 1 (GlyT1) Inhibitor, Reverses Object Recognition and Spatial Memory Impairments Following Binge-like Ethanol Exposure in Rats.
Molecules
December 2024
Department of Pharmacology and Pharmacodynamics, Medical University of Lublin, Chodzki 4a, 20-093 Lublin, Poland.
The N-methyl-D-aspartate (NMDA) glutamate receptor is a major target of ethanol, and it is implicated in learning and memory formation, and other cognitive functions. Glycine acts as a co-agonist for this receptor. We examined whether Org24598, a selective inhibitor of glycine transporter1 (GlyT1), affects ethanol withdrawal-induced deficits in recognition memory (Novel Object Recognition (NOR) task) and spatial memory (Barnes Maze (BM) task) in rats, and whether the NMDA receptor glycine site participates in this phenomenon.
View Article and Find Full Text PDFNeuroprotection by chronic administration of Fluoroethylnormemantine (FENM) in mouse models of Alzheimer's disease.
Alzheimers Res Ther
January 2025
MMDN, Univ Montpellier, EPHE, INSERM, Montpellier, France.
Background: Fluoroethylnormemantine (FENM), a new Memantine (MEM) derivative, prevented amyloid-β[25-35] peptide (Aβ)-induced neurotoxicity in mice, a pharmacological model of Alzheimer's disease (AD) with high predictive value for drug discovery. Here, as drug infusion is likely to better reflect drug bioavailability due to the interspecies pharmacokinetics variation, we analyzed the efficacy of FENM after chronic subcutaneous (SC) infusion, in comparison with IP injections in two AD mouse models, Aβ-injected mice and the transgenic APP/PSEN1 (APP/PS1) line.
Methods: In Aβ-treated mice, FENM was infused at 0.
Anti-N-methyl-D-aspartate (NMDA) receptor encephalitis is a rare autoimmune disorder that typically presents with neuropsychiatric symptoms and medial temporal lobe involvement. We report the case of a 24-year-old female with no significant medical history, who developed severe anxiety, memory deficits, and confusion over a two-week period. Neurological examination revealed cognitive dysfunction, asymmetric limb movements, and psychosis.
View Article and Find Full Text PDFCatatonia As Initial Presentation in Anti-N-Methyl-D-Aspartate (NMDA) Receptor Encephalitis: A Case Report of a 19-Year-Old Patient.
Cureus
November 2024
Neurology, National Institute of Neurology and Neurosurgery "Dr. Manuel Velasco Suárez", Mexico City, MEX.
Anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis stands as the most prevalent form of autoimmune encephalitis, primarily affecting young patients and exhibiting a higher incidence among females. Patients frequently present with psychiatric symptoms or cognitive impairments such as speech disturbances, decreased level of consciousness, autonomic dysfunction, as well as seizures, dyskinesias, and catatonia due to overactivation of extrasynaptic NMDA receptors. To date, there is no gold standard for the diagnosis of catatonia; however, a few rating scales exist to measure this phenomenon, with the Bush Francis Catatonia Rating Scale being the most commonly used due to its validity, reliability, and ease of application.
View Article and Find Full Text PDFEvidence-based diagnostic prediction score for pediatric NMDA receptor encephalitis.
Eur J Paediatr Neurol
December 2024
Department of Brain & Neurosciences, Tokyo Metropolitan Institute of Medical Science, Tokyo, Japan. Electronic address:
Objective: Early diagnosis and treatment of anti-N-methyl-D-aspartate receptor encephalitis (NMDARE) are crucial for a favorable prognosis. Detecting the causative autoantibodies can be challenging. Probable diagnostic criteria are useful in adults less so in children.
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