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Drug Development.
Alzheimers Dement
December 2024
Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, U.S.A., Philadelphia, PA, USA.
Background: The vicious cycle between depression and dementia increases the risk of Alzheimer's Disease (AD) pathogenesis and pathology. This study investigates therapeutic effectiveness versus side effects and the underlying mechanisms of intranasal dantrolene nanoparticles (IDNs) to treat depression behavior and memory loss in 5XFAD mice.
Method: 5XFAD and wild-type B6SJLF1/J mice were treated with IDNs (IDN, 5 mg/kg) in Ryanodex formulation for a duration of 12 weeks.
Drug Development.
Alzheimers Dement
December 2024
NYU Grossman School of Medicine, New York, NY, USA; NYU, New York City, NY, USA.
Background: Astrocytes, a major glial cell in the central nervous system (CNS), can become reactive in response to inflammation or injury, and release toxic factors that kill specific subtypes of neurons. Over the past several decades, many groups report that reactive astrocytes are present in the brains of patients with Alzheimer's disease, as well as several other neurodegenerative diseases. In addition, reactive astrocyte sub-types most associated with these diseases are now reported to be present during CNS cancers of several types.
View Article and Find Full Text PDFBackground: Impaired Aβ clearance plays a key role in the common, late-onset AD. Anti-Aβ immunotherapies are controversial, in part because of high rates of serious side effects including edema, microhemorrhages, and siderosis, highlighting the importance of the development of alternative Aβ clearance strategy. Here, we introduce a bioinspired nanoparticle named MG-PE3 crossing the human blood-brain barrier (BBB) and clearing Aβ with no adverse effect.
View Article and Find Full Text PDFBackground: Convergent evidence indicates that deficits in the endosomal recycling pathway underlies pathogenesis of Alzheimer's disease (AD). SORL1 encodes the retromer-associated receptor SORLA that plays an essential role in recycling of AD-associated cargos such as the amyloid precursor protein and the glutamatergic AMPA receptor. Importantly, loss of function pathogenic SORL1 variants are associated with AD.
View Article and Find Full Text PDFDrug Development.
Alzheimers Dement
December 2024
MRC Protein Phosphorylation and Ubiquitylation Unit, Dundee, Scotland, United Kingdom.
Background: Accumulation of misfolded a-synuclein protein in intracellular inclusion bodies of dopaminergic neurons underlies the pathogenesis of synucleinopathies, which include Parkinson's Disease (PD), Dementia with Lewy Bodies (DLB) and Multiple System Atrophy (MSA). Therefore, clearance of misfolded α-synuclein from dopaminergic neurons could in principle offer a an approach for modifying synucleinopathies, which currently remain untreatable.
Method: In this study, we employ the Affinity-directed PROtein Missile (AdPROM) system consisting of the substrate receptor of the CUL2-E3 ligase complex VHL and a nanobody selectively recognising the human α-synuclein protein RESULT: We demonstrate targeted degradation of endogenous α-synuclein from human cell lines with exquisite selectivity.
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