30 research outputs found
Early intervention with ABA prevents neuroinflammation and memory impairment in a triple transgenic mice model of AlzheimerÂŽs disease
Neuroinflammation and insulin resistance in the brain are intimately linked to neurodegenerative disorders, including Alzheimerâs disease. Even though traditionally AlzheimerÂŽs disease has been associated to AÎČ deposits and hyperphosphorylated Tau intracellular tangles, several studies show that neuroinflammation may be the initial cause that triggers degeneration. Accordingly, a number of natural supplements that improves brain insulin sensitivity and reduce neuroinflammation have been proposed as good choices in the therapeutic prevention of cognitive decline. Further supporting this evidence, we show that phytohormone Abscisic Acid, can prevent memory impairment and neuroinflammation markers in a triple transgenic mouse model, where no peripheral inflammatory changes have occurred. Moreover, our data strongly suggests that early intervention is critical for good prognosis, and that cognitive improvement requires longer treatment than recovering neuroinflammation markers
The Neurovascular Unit Dysfunction in Alzheimer's Disease
Funding: This work was supported by Fondo Nacional de Ciencia y Tecnologia (FONDOCyT) from the Ministry of Higher Education, Science and Technology, Dominican Republic (2015-3A2-127 to M.P.-H.) and (2018-2019-2A3-208 to J.L.-M. and M.P.-H.). Acknowledgments: The authors want to express their gratitude to the Mexican families who have donated the brain of their loved ones affected by Alzheimerâs disease and made our research possible. We also want to express our gratitude to the Union Medical University Clinic, Dominican Republic, for their support and collaboration in developing of this research project. This work is dedicated to the memory of JosĂ© RaĂșl Mena LĂłpez â .Peer reviewedPublisher PD
Insoluble Vascular Amyloid Deposits Trigger Disruption of the Neurovascular Unit in Alzheimerâs Disease Brains
Funding: This work was supported by Fondo Nacional de Ciencia y Tecnologia, FONDOCyT, from the Ministry of Higher Education, Science and Technology, Dominican Republic (2015-3A2-127 to MP-H) and (2018-2019-2A3-208 to J.L.-M. and M.P.-H). Acknowledgments: The authors want to express their gratitude to the following: P. Daviesâ (Albert Einstein College of Medicine, Bronx, NY, USA) and Lester I. Binderâ (North Western, Chicago, IL, USA) for the generous gift of mAbs TG-3 and Alz-50, and Tau-1, Tau-5, and Tau-7, respectively; Tec. Amparo Viramontes Pintos for the handling of the brain tissue; support in the confocal microscopy unit of CIIDIR Durango, Instituto PolitĂ©cnico Nacional; Union Medica University Clinic, Dominican Republic, for their support and collaboration in the development of this research project. We also want to express our gratitude to the Mexican families who have donated the brain of their loved ones affected by Alzheimerâs disease and made our research possible. This work is dedicated to the memory of JosĂ© RaĂșl Mena LĂłpezâ . â Deceased.Peer reviewedPublisher PD
PHF-Core Tau as the Potential Initiating Event for Tau Pathology in Alzheimerâs Disease
FUNDING This work was supported by Fondo Nacional de Ciencia, Tecnologia, FONDOCyT, from the Ministry of Higher Education, Science and Technology, Dominican Republic (2015- 3A2-127 to MP-H and 2018-2019-2A3-208 to JL-M and MP-H). ACKNOWLEDGMENTS: We want to express our gratitude to the following: Dr. P. Davies (Albert Einstein College of Medicine, Bronx, NY, United States) and Lester I. Binderâ (North Western, Chicago, IL, United States) for the generous gifts of mAbs TG3 and Alz-50, and Tau-1, Tau-5, and Tau-7, respectively; Tec. Amparo Viramontes Pintos for the handling of the brain tissue; Samadhi Moreno-Campuzano for her technical assistance/support in the confocal microscopy unit of CIIDIR Durango, Instituto PolitĂ©cnico Nacional; Union Medical University Clinic, Dominican Republic, for their support and collaboration in the development of this research project. We also want to express our gratitude to the Mexican families who have donated the brain of their loved ones affected with Alzheimerâs disease and made our research possible. This work is dedicated to the memory of Professor Dr. JosĂ© RaĂșl Mena LĂłpezâ .Peer reviewedPublisher PD
Elucidating the neuropathologic mechanisms of SARS-CoV-2 infection
Acknowledgements We want to express our gratitude to the Union Medical University Clinic, Dominican Republic, for their support and collaboration in the development of this research project. We also want to express our gratitude to the Mexican families who have donated the brain of their loved ones affected with Alzheimer's disease and made our research possible. This work is dedicated to the memory of Professor Dr. JosĂ© RaĂșl Mena LĂłpezâ .Peer reviewedPublisher PD
Tau Protein Phosphorylated at Threonine-231 Is Expressed Abundantly in the Cerebellum in Prion Encephalopathies
ACKNOWLEDGMENTS: The authors want to express their gratitude to the following: Dr. P. Davies â (Albert Einstein College of Medicine, Bronx, NY, USA) and Lester I. Binder â (North Western, Chicago, IL, USA) for the generous gift of mAbs TG-3 and Alz-50, and Tau-1, Tau-5 and Tau-7, respectively; Tec. Amparo Viramontes Pintos for the handling of the brain tissue; support in the confocal microscopy unit of CIIDIR Durango, Instituto PolitĂ©cnico Nacional; Union Medica University Clinic, Dominican Republic, for their support and collaboration in the development of this research project. We also want to express our gratitude to the Mexican families who have donated the brain of their loved ones affected with Alzheimer's disease and made our research possible. This work is dedicated to the memory of Professor Dr. JosĂ© RaĂșl Mena LĂłpez â . â Deceased. This work was supported by Fondo Nacional de Ciencia y Tecnologia, FONDOCyT, from the Ministry of Higher Education, Science and Technology, Dominican Republic (2015-3A2-127 to MP-H) and (2018-2019-2A3-208 to JL-M and MP-H).Peer reviewedPublisher PD
Molecular Processing of Tau Protein in Progressive Supranuclear Palsy : Neuronal and Glial Degeneration
ACKNOWLEDGMENTS This work was supported by Fondo Nacional de Ciencia y Tecnologia, FONDOCyT, from the Ministry of Higher Education, Science and Technology, Dominican Republic (2015-3A2-127 to MP-H) and (2018-2019-2A3-208 to JL-M and MP-H). The authors want to express their gratitude to the following: Dr. P. Daviesâ (Albert Einstein College of Medicine, Bronx, NY, USA) and Lester I. Binderâ (North Western, Chicago, IL, USA) for the generous gift of mAbs TGâ3 and Alzâ50, and Tauâ1, Tauâ5 and Tauâ7, respectively; Tec. Amparo Viramontes Pintos for the handling of the brain tissue; support in the confocal microscopy unit of CIIDIR Durango, Instituto Politecnico Nacional; Union Medica Uni- A. MartŽınez-Maldonado et al. / Molecular Processing of Tau Protein in Progressive Supranuclear Palsy 1529 versity Clinic, Dominican Republic, for their support and collaboration in the development of this research project. We also want to express our gratitude to the Mexican families who have donated the brain of their loved ones affected with Alzheimerâs disease and made our research possible. This work is dedicated to the memory of Professor Dr. Jose Ra ÂŽ ul Mena L ÂŽ opez ÂŽ â . â Deceased. Authorsâ disclosures available online (https:// www.j-alz.com/manuscript-disclosures/20-1139r2).Peer reviewedPublisher PD
Rapid ÎČ-amyloid deposition and cognitive impairment after cholinergic denervation in APP/PS1 mice
Although extensive evidence supports the role of amyloid-ÎČ (AÎČ) in Alzheimer disease (AD), the neurotoxic mechanisms underlying AD pathogenesis are not understood. On the other hand, neuronal loss is the pathological feature that best correlates with cognitive impairment. We hypothesized that cholinergic neurodegeneration may lead to AÎČ deposition and tested this by inducing selective cholinergic lesions in APPswe/PS1dE9 mice with murine p75(NTR) saporin (mu p75-SAP). Intracerebroventricular lesions that removed ~50% of cholinergic innervation to the cortex and hippocampus were induced in animals with incipient (~3 months) and marked (~7 months of age) AÎČ deposition. Cranial windows were implanted and AÎČ deposition was monitored in vivo using multiphoton microscopy. AÎČ deposition was increased as soon as 7 days after the lesion and this effect was maintained up to 3 months later. Postmortem studies using immunohistochemistry with an anti-AÎČ antibody corroborated these findings in both cerebral cortex and hippocampus. Tau phosphorylation was also significantly increased after the lesions. Cholinergic denervation resulted in early memory impairment at 3 months of age that worsened with age (~7 months); there was a synergistic effect between cholinergic denervation and the presence of APP/PS1 transgenes. Altogether, our data suggest that cholinergic denervation may trigger AÎČ deposition and synergistically contribute to cognitive impairment in AD patients
Un modelo de aprendizaje colaborativo para la Edad Moderna: el recurso a las TICs y su aplicaciĂłn a un entorno de docencia virtual
Depto. de Dibujo y GrabadoFac. de Bellas ArtesFALSEsubmitte
Un modelo de aprendizaje colaborativo para la Edad Moderna: el recurso a las TICS y su aplicaciĂłn a un entorno de docencia virtual II
Depto. de Historia Moderna y ContemporĂĄneaFac. de GeografĂa e HistoriaFALSEsubmitte