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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 24 — Aug. 20, 2009
  • pp: 4743–4748

Raman signature from brain hippocampus could aid Alzheimer’s disease diagnosis

Pu Chen, Aiguo Shen, Wei Zhao, Seong-Joon Baek, Hua Yuan, and Jiming Hu  »View Author Affiliations


Applied Optics, Vol. 48, Issue 24, pp. 4743-4748 (2009)
http://dx.doi.org/10.1364/AO.48.004743


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Abstract

Micro-Raman spectroscopy (MRS) is used for the first time to our knowledge to investigate brain hippocampus tissue from Alzheimer’s disease (AD) infected rats. In situ Raman analysis of tissue sections provides distinct spectra useful for distinguishing AD from normal state. The biochemical changes of brain hippocampus tissue including the deposit of β-amyloid ( A β ) protein, the increase of cholesterol, and hyperphosphorylated tau are observed through MRS when AD occurs. A more convincing multi- Raman criterion based on single Raman peaks, and further in combination with statistical analysis of the entire Raman spectrum, is found capable of classifying brain hippocampus tissues with different pathological features. This study demonstrates the brain hippocampus is an important candidate for considering the early pathological state of AD, and Raman signatures from the brain hippocampus could aid AD diagnosis. In addition, Raman results undoubtedly confirm simultaneous changes of cholesterol and A β in the progression of AD.

© 2009 Optical Society of America

OCIS Codes
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.5660) Medical optics and biotechnology : Raman spectroscopy
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: November 20, 2008
Revised Manuscript: June 16, 2009
Manuscript Accepted: July 30, 2009
Published: August 13, 2009

Virtual Issues
Vol. 4, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Pu Chen, Aiguo Shen, Wei Zhao, Seong-Joon Baek, Hua Yuan, and Jiming Hu, "Raman signature from brain hippocampus could aid Alzheimer's disease diagnosis," Appl. Opt. 48, 4743-4748 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-24-4743

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