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Autoimmune Encephalitis Induced by SARS-CoV-2 Infection Treated with Thymectomy.
Ann Thorac Surg Short Rep
December 2024
Division of Cardiothoracic Surgery, University of California, San Diego, California.
Thymomas have been associated with the generation of paraneoplastic autoantibodies to neurogenic epitopes, collapsin-response-mediator protein-5 receptor (CRMP-5) and alpha-amino-3-hydroxyl-5methyl-4isoxazolepropionic acid receptor (AMPAR), in patients with acute viral infection. We report a patient with thymoma and myasthenia gravis, with SARS-CoV-2 infection, who became comatose secondary to autoimmune encephalitis. Plasmapheresis, high-dose steroids, pyridostigmine, eculizumab, and rituximab did not restore neurologic function.
View Article and Find Full Text PDFSuperoxide dismutase 2 deficiency in mesenchymal stromal cells induces sympathetic denervation and functional impairment of brown adipose tissue.
Pathol Int
January 2025
Department of Tumor Pathology, Nagoya University Graduate School of Medicine, Nagoya, Japan.
Article Synopsis
- Brown adipose tissue (BAT) is critical for energy consumption, and its dysfunction can lead to metabolic diseases and obesity, especially as we age.
- The study identifies that perineurial cells, which have reduced antioxidant capacity due to lacking superoxide dismutase 2, impair BAT function by causing sympathetic nerve denervation and reducing fat oxidation.
- Targeting Meflin-expressing stromal cells may be a promising strategy to strengthen BAT function and combat age-related metabolic issues.
Anti-Collapsin Response Mediator Protein 5(CV2/CRMP5) and Anti-Glutamic Acid Decarboxylase (GAD) Antibodies-Mediated Encephalopathy Mimicking Atypical Parkinsonism.
Neurol Int
December 2024
Department of Biomedicine, Neuroscience and Advanced Diagnostics (BiND), University of Palermo, 90127 Palermo, Italy.
: Paraneoplastic neurological syndromes (PNSs) are rare conditions characterized by immune-mediated pathogenesis, frequently associated with the presence of a neoplasm. Although a single antineuronal antibody mediates a specific syndrome, atypical manifestations mediated by the same antibody have been described. : The aim of this study was to report on an atypical case of PNS with dual positivity for anti-GAD65 and anti-CRMP5/CV2 antibodies, simultaneously characterized by cognitive decline associated with progressive ataxia and parkinsonism.
View Article and Find Full Text PDFParaneoplastic retinopathy (PR) is a rare autoimmune condition typically associated with progressive visual loss and is often linked to anti-recoverin antibodies. Paraneoplastic optic neuropathy (PON) is classically associated with collapsin response-mediator protein (CRMP-5). We present a unique case of non-progressive CRMP-5-associated perifoveal retinitis in a 79-year-old female with a history of breast carcinoma, who has maintained a stable visual acuity over an extended follow-up period of three years.
View Article and Find Full Text PDFIsoaspartate formation and irreversible aggregation of collapsin response mediator protein 2: implications for the etiology of epilepsy and age-related cognitive decline.
Amino Acids
December 2024
Department of Molecular Biology and Biochemistry, University of California Irvine, Irvine, CA, 92697-3900, USA.
Collapsin response mediator protein 2 (CRMP2) functions in the genesis and activity of neuronal connections in mammalian brain. We previously reported that a protein coincident with CRMP2 on 2D-gels undergoes marked accumulation of abnormal L-isoaspartyl sites in brain extracts of mice missing the repair enzyme, protein L-isoaspartyl methyltransferase (PIMT). To confirm and explore the significance of isoaspartyl damage in CRMP2, we expressed and purified recombinant mouse CRMP2 (rCRMP2).
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