Journal
OPTICS EXPRESS
Volume 17, Issue 5, Pages 3679-3689Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.17.003679
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Funding
- NIH [9-P41-EB001976, 1-R21-AG026650]
- Nanobiotechnology Center (NBTC)
- STC Program of the National Science Foundation [ECS-9876771]
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Intrinsic optical emissions, such as autofluorescence and second harmonic generation (SHG), are potentially useful for functional fluorescence imaging and biomedical disease diagnosis for neurodegenerative diseases such as Alzheimer's disease (AD). Here, using multiphoton and SHG microscopy, we identified sources of intrinsic emissions in ex vivo, acute brain slices from AD transgenic mouse models. We observed autofluorescence and SHG at senile plaques as well as characterized their emission spectra. The utility of intrinsic emissions was demonstrated by imaging senile plaque autofluorescence in conjunction with SHG from microtubule arrays to assess the polarity of microtubules near pathological lesions. Our results suggest that tissues from AD transgenic models contain distinct intrinsic emissions, which can provide valuable information about the disease mechanisms. (C) 2008 Optical Society of America
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