| Autor: |
Willis JA; Department of Biomedical Engineering at Texas A&M University, TX 77840, USA., Cheburkanov V; Department of Biomedical Engineering at Texas A&M University, TX 77840, USA., Yakovlev VV; Departments of Biomedical Engineering and Physics at Texas A&M University, TX 77840, USA. |
| Jazyk: |
angličtina |
| Zdroj: |
IEEE journal of selected topics in quantum electronics : a publication of the IEEE Lasers and Electro-optics Society [IEEE J Sel Top Quantum Electron] 2023 Jul-Aug; Vol. 29 (4 Biophotonics). Date of Electronic Publication: 2023 Apr 25. |
| DOI: |
10.1109/jstqe.2023.3270403 |
| Abstrakt: |
A myloid-Detection and imaging of amyloid-β plaques (Aβ) has been a focus in the field of neurodegeneration (ND) due to the high correlation with Parkinson's and Alzheimer's diseases. Here, a novel approach is being proposed and developed to induce and assess those diseases. Photodynamic therapy (PDT) is applied to the fruit fly Drosophila melanogaster as a model of systemic oxidative stress to induce rapid Aβ accumulation. Excised brains are evaluated by Brillouin-Raman spectroscopy and microscopy with UV surface emissions (MUSE) to interrogate physical property changes due to fixation and high-dose PDT. MUSE reveals reasonable autofluorescence in the spectral range of Aβ, particularly for females, with increased signal once stained. A presence of significant mechanical changes in fresh brains treated with PDT compared to healthy controls is revealed using Brillouin spectroscopy. Aβ plaque presence was confirmed with confocal analysis, with female PDT flies yielding nearly four-fold the mean intensity of controls, thus marking PDT as a potential neurodegenerative disease model. MUSE may serve as a viable early screening method for Aβ presence and quantification in a research setting. This reduces the time for sample preparation and drastically decreases the cost of Aβ quantification. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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