Amyloid Beta 40
Amyloid Beta 40 - Related Videos
06:34
A Tailored HPLC Purification Protocol That Yields High-purity Amyloid Beta 42 and Amyloid Beta 40 Peptides, Capable of Oligomer Formation
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Cited by 6 •
2017
Herein we report a tailored HPLC purification protocol that yields high-purity amyloid beta 42 (Aβ42) and amyloid beta 40 (Aβ40) peptides, capable of oligomer formation. Amyloid beta is a highly aggregation prone, hydrophobic peptide implicated in Alzheimer's disease. The amyloidogenic nature of the peptide makes its purification a challenge.
08:53
Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids
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2025
Here, we present a systematic method describing the quasi-reversible self-assembly of the amyloid beta 1-40 (Aβ1-40)-coated 20 nm gold aggregates. The nano-size-dependent quasi-reversible networking between peptides was correlated with specific amino acids or sections of the Aβ1-40 monomer.
01:25
Beta
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2024
Beta is a crucial metric in finance used to assess an investment's risk and expected return relative to the overall market. It is calculated as the slope of the line in a scatterplot that compares the returns of an individual stock to the returns of the market benchmark, typically represented by a broad market index. Beta quantifies how much a stock's price moves in response to market movements, providing insight into its volatility and systematic risk. A beta of one indicates that the stock's...
04:59
Visualization of Amyloid-Beta Peptides in Human Cortical Brain Slices
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2025
The video demonstrates a procedure for preparing human cortical brain slices from Alzheimer's disease patients for analyzing the deposition of amyloid-beta (Aβ) peptides using Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry (MALDI-IMS). The steps include preparing the slides, treating the tissue to enhance ionization, and analyzing the spatial distribution of amyloid-beta peptides.
09:50
In situ Quantification of Pancreatic Beta-cell Mass in Mice
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Cited by 6 •
2010
The following protocol outlines the process of pancreatic dissection for virtual slice imaging, and the subsequent quantification of all GFP-tagged beta-cells in the entire pancreas.
FAQs
The peptide is released when β- and γ-secretases cleave amyloid precursor protein (APP) during its processing. This places secretase activity at the production stage of Aβ40 metabolism, before the peptide either remains soluble, associates with cell membranes, or assembles into larger structures. Studying this pathway helps researchers connect APP processing with downstream changes in amyloid biology and disease mechanisms.
Biochemical conditions influence whether Aβ40 stays soluble or shifts toward membrane association, oligomer formation, or fibrillar deposits. These states represent different physical organizations of the same peptide and provide distinct readouts for studying amyloid behavior. Comparing conditions that favor each state can help researchers investigate how aggregation relates to disease mechanisms, rather than treating all detected peptide as equivalent.
Rather than evaluating Aβ40 in isolation, researchers can examine its level relative to Aβ42. Changes in this ratio are used in studies of amyloid metabolism and disease mechanisms, and they may support biomarker development. The comparison is therefore useful for interpreting amyloid-related changes across research settings, including investigations of Alzheimer’s disease.
Measuring Aβ40 in brain tissue, cerebrospinal fluid, and blood gives researchers several biological contexts for studying the peptide. Results from these materials can be used to investigate amyloid metabolism, disease mechanisms, and changes in the Aβ40:Aβ42 ratio. Examining more than one sample type also supports efforts to identify measurements relevant to biomarker development.
A study may measure Aβ40 in brain tissue, cerebrospinal fluid, or blood, then relate those measurements to amyloid metabolism, disease mechanisms, or the Aβ40:Aβ42 ratio. Researchers can also examine whether the peptide is soluble, membrane-associated, oligomeric, or fibrillar under particular biochemical conditions. This approach links molecular state and measured abundance to biological interpretation.
Because Aβ40 can be affected at production, clearance, or aggregation stages, researchers can use it to study therapies designed to alter those processes. Measurements of the peptide, its distribution among biological samples, or its relationship to Aβ42 can help evaluate how an intervention changes amyloid biology. This connects molecular measurements with treatment research in Alzheimer’s disease.