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- W4386203865 abstract "The number of disease states linked the aberrant regular protein conformations to oligomers and amyloid fibrils. Amyloid beta 1-42 (Aβ1-42) peptide is very hydrophobic and quickly forms the β-rich structure and fibrillar protein aggregates in some solutions and buffer conditions. Ultrasonication pulses can disrupt amyloid fibrils to smaller fragments and produce Aβ1-42 peptides of different sizes and oligomers. Herein, we investigated the effects of buffer and ultrasonication on Aβ1-42 structure at low and high concentrations. After ultrasonication, the Western blot results showed that Aβ1-42 fibrils were disaggregated into different sizes. The transmission electron microscopy results indicated Aβ1-42 at low concentration (25 µM) in Ham's/F12 phenol red-free culture medium formed short-size fragments and oligomers. In comparison, Aβ1-42 at higher concentration (100 µM) formed fibrils that break down into smaller fragments after ultrasonication. However, after regrowth, it formed mature fibrils again. Cell viability assay indicated that Aβ1-42 oligomers formed at a low concentration (25 µM) were more toxic to PC12 cells than other forms. In conclusion, by applying ultrasonication pulses and controlling peptide concentration and buffer condition, we can rich Aβ1-42 aggregates with a particular size and molecular structure." @default.
- W4386203865 created "2023-08-28" @default.
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- W4386203865 date "2023-08-27" @default.
- W4386203865 modified "2023-09-26" @default.
- W4386203865 title "The Effect of Ultrasonication on the Fibrillar/ Oligomeric Structures of Aβ1−42 at Different Concentrations" @default.
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- W4386203865 doi "https://doi.org/10.1007/s10930-023-10138-0" @default.
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