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Human neural rosettes secrete bioactive extracellular vesicles enriched in neuronal and glial cellular components.
Sci Rep
January 2025
Centro de Investigación en Medicina Traslacional "Severo R. Amuchástegui" (CIMETSA), Instituto Universitario de Ciencias Biomédicas de Córdoba (IUCBC), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Naciones Unidas 420, Barrio Parque Vélez Sarsfield, X5016KEJ, Córdoba, Argentina.
Extracellular vesicles (EVs) play a critical role in the development of neural cells in the central nervous system (CNS). Human neural rosettes (hNRs) are radial cell structures that assemble from induced pluripotent stem cells (hiPSCs) and recapitulate some stages of neural tube morphogenesis. Here we show that hiPSCs and hNRs secrete EVs (hiPSC-EVs and hNR-EVs) with distinctive protein cargoes.
View Article and Find Full Text PDFUnderstanding the Molecular Impact of Physical Exercise on Alzheimer's Disease.
Int J Mol Sci
December 2024
Institute of Biomedicine (IBIOMED), University of León, 24071 Leon, Spain.
Alzheimer's disease is one of the most common neurodegenerative diseases, characterized by a wide range of neurological symptoms that begin with personality changes and psychiatric symptoms, progress to mild cognitive impairment, and eventually lead to dementia. Physical exercise is part of the non-pharmacological treatments used in Alzheimer's disease, as it has been shown to delay the neurodegenerative process by improving the redox state in brain tissue, providing anti-inflammatory effects or stimulating the release of the brain-derived neurotrophic factor that enhances the brain structure and cognitive performance. Here, we reviewed the results obtained from studies conducted in both animal models and human subjects to comprehend how physical exercise interventions can exert changes in the molecular mechanisms underlying the pathophysiological processes in Alzheimer's disease: amyloid β-peptide pathology, tau pathology, neuroglial changes, mitochondrial dysfunction, and oxidative stress.
View Article and Find Full Text PDFMultiple Sclerosis-like Lesions Induced by Radiation: A Case Report and Systematic Review of the Literature.
J Clin Med
December 2024
Second Department of Neurology, "Attikon" University Hospital, School of Medicine, National and Kapodistrian University of Athens, 12462 Athens, Greece.
Radiotherapy (RT) remains crucial in treating both primary and metastatic central nervous system cancer. Despite advancements in modern techniques that mitigate some toxic adverse effects, magnetic resonance imaging (MRI) scans still reveal a wide range of radiation-induced changes. Radiation can adversely affect neuroglial cells and their precursors, potentially triggering a demyelinating pattern similar to multiple sclerosis (MS).
View Article and Find Full Text PDFSMOX Inhibition Preserved Visual Acuity, Contrast Sensitivity, and Retinal Function and Reduced Neuro-Glial Injury in Mice During Prolonged Diabetes.
Cells
December 2024
Program in Clinical and Experimental Therapeutics, College of Pharmacy, University of Georgia, Augusta, GA 30907, USA.
Diabetic retinopathy, a major cause of vision loss, is characterized by neurovascular changes in the retina. The lack of effective treatments to preserve vision in diabetic patients remains a significant challenge. A previous study from our laboratory demonstrated that 12-week treatment with MDL 72527, a pharmacological inhibitor of spermine oxidase (SMOX, a critical regulator of polyamine metabolism), reduced neurodegeneration in diabetic mice.
View Article and Find Full Text PDFCase report: Giant meningioma of the left hemisphere.
Front Oncol
December 2024
Department of Neurosurgery, Zibo Central Hospital, Zibo, China.
Meningiomas are some of the most prevalent primary brain tumors in adults, and are typically non-neuroglial in nature. A variety of symptoms may be observed, including headaches, fluctuations in mental status, ataxia, muscle weakness, nausea and vomiting, seizures, visual changes, speech disorders, and sensory abnormalities. The World Health Organization (WHO) has a grading system for meningiomas based on histological criteria, which is as follows: Grade 1 meningiomas are considered benign; Grade 2 meningiomas have a moderately aggressive nature and usually present with histological atypia; and Grade 3 meningiomas exhibit aggressive malignant behavior.
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