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http://dx.doi.org/10.1038/bjc.1995.324 | DOI Listing |
Background: Small, soluble oligomers, rather than mature fibrils, are the major neurotoxic agents in Alzheimer's disease (AD). In the last few years, Aprile and co-workers designed and purified a single-domain antibody (sdAb), called DesAb-O, with high specificity for Aβ oligomeric conformers. Recently, Cascella and co-workers showed that DesAb-O can selectively detect synthetic Aβ oligomers both in vitro and in cultured cells, neutralizing their associated neuronal dysfunction.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Memory and Aging Center, UCSF Weill Institute for Neurosciences, University of California, San Francisco, San Francisco, CA, USA.
Women account for almost two-thirds of Alzheimer's disease (AD) cases, yet evidence significantly less clinical benefit from recently deployed amyloid-lowering therapies. To close this disparity gap, there is an urgent need to identify biological drivers of sex differences in the manifestation and clinical response to AD therapeutics. A recent review of multi-omic studies of AD reported >75% of studies showed female-specific changes at the molecular level (vs.
View Article and Find Full Text PDFAlzheimers Dement
December 2024
Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA.
Background: Protein misfolding is a key pathological phenomenon driving neurodegenerative diseases that affect millions of people. Visualizing this misfolding process with smart imaging probes would greatly facilitate early diagnosis, etiology elucidation, disease progression monitoring, and drug discovery of neurodegeneration. Although numerous probes have been reported, several unmet needs still exist.
View Article and Find Full Text PDFJ Phys Chem A
January 2025
Department of Chemistry, Queen's University, 90 Bader Lane, Kingston, Ontario K7L 3N6, Canada.
We report a new NMR method for treating two-site chemical exchange involving half-integer quadrupolar nuclei in a solution. The new method was experimentally verified with extensive Na ( = 3/2), K ( = 3/2), and Rb ( = 3/2) NMR results from alkali metal ions (Na, K, and Rb) in a solution over a wide range of molecular tumbling conditions. In the fast-motion limit, all allowed single-quantum NMR transitions for a particular quadrupolar nucleus are degenerate giving rise to one Lorentzian signal.
View Article and Find Full Text PDFJ Am Chem Soc
January 2025
Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, China.
Metal fatigue, characterized by the accumulation of dislocation defects, is a prevalent failure mode in structural materials. Nondestructive early-stage detection of metal fatigue is extremely important to prevent disastrous events and protect human life. However, the lack of a precise quantitative method to visualize fatigue with spatiotemporal resolution poses a significant obstacle to timely detection.
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