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Updated: Aug 17, 2026
Visualization of Amyloid β Deposits in the Human Brain with Matrix-assisted Laser Desorption/Ionization Imaging Mass Spectrometry
Published on: March 7, 2019
In vivo imaging of amyloid-beta deposits in mouse brain with multiphoton microscopy
Jesse Skoch1, Gregory A Hickey, Stephen T Kajdasz
1Department of Neurology, Massachusetts General Hospital, Charlestown, MA, USA.
Abstract:
With the advent of transgenic mouse models expressing cortical amyloid pathology, the potential to study its progression in an intact brain has been realized. Multiphoton microscopy provides a non-destructive means of imaging with micron resolution up to 500 microm deep into the cortex. We detail a surgical procedure and discuss a multiphoton imaging approach that allows for labeling and chronic visualization of amyloid-beta deposits through a cranial window. The ability to monitor these hallmarks of Alzheimer's disease enables studies aimed at evaluating the efficacy of treatment and prevention strategies.
Insights
Researchers developed a chronic imaging method for tracking amyloid-beta deposits in mouse models. This technique allows for non-destructive, in-vivo visualization of Alzheimer's disease hallmarks to test new treatments.
Area of Science:
- Neuroscience
- Biomedical Imaging
- Alzheimer's Disease Research
Background:
- Transgenic mouse models now allow for the study of amyloid pathology in intact brains.
- Alzheimer's disease is characterized by amyloid-beta (Aβ) deposits in the cortex.
- Non-destructive imaging techniques are crucial for longitudinal studies of disease progression.
Purpose of the Study:
- To detail a surgical procedure and multiphoton imaging approach for chronic visualization of amyloid-beta deposits.
- To enable longitudinal monitoring of Alzheimer's disease hallmarks in a living brain.
- To facilitate the evaluation of therapeutic and preventative strategies for Alzheimer's disease.
Main Methods:
- Development of a surgical procedure for creating a cranial window in mouse models.
- Application of multiphoton microscopy for non-destructive imaging up to 500 microm deep.
- Labeling and chronic visualization techniques for amyloid-beta deposits in vivo.
- Utilizing transgenic mouse models expressing cortical amyloid pathology.
Main Results:
- Successful establishment of a method for chronic, in-vivo imaging of amyloid pathology.
- Demonstration of multiphoton microscopy's capability for high-resolution imaging of Aβ deposits.
- Validation of the approach for monitoring disease progression in a living brain.
Conclusions:
- The developed imaging technique provides a powerful tool for studying Alzheimer's disease progression in real-time.
- This method enables the assessment of treatment efficacy in preclinical models.
- Chronic visualization of amyloid plaques offers new avenues for Alzheimer's research and drug development.
