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Biomedical Optics Express

Biomedical Optics Express

  • Editor: Joseph A. Izatt
  • Vol. 5, Iss. 7 — Jul. 1, 2014
  • pp: 2184–2195

Exploring diazepam’s effect on hemodynamic responses of mouse brain tissue by optical spectroscopic imaging

David Abookasis, Ariel Shochat, Elimelech Nesher, and Albert Pinhasov  »View Author Affiliations

Biomedical Optics Express, Vol. 5, Issue 7, pp. 2184-2195 (2014)

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In this study, a simple duel-optical spectroscopic imaging apparatus capable of simultaneously determining relative changes in brain oxy-and deoxy-hemoglobin concentrations was used following administration of the anxiolytic compound diazepam in mice with strong dominant (Dom) and submissive (Sub) behavioral traits. Three month old mice (n = 30) were anesthetized and after 10 min of baseline imaging, diazepam (1.5 mg/kg) was administered and measurements were taken for 80 min. The mouse head was illuminated by white light based LED's and diffused reflected light passing through different channels, consisting of a bandpass filter and a CCD camera, respectively, was collected and analyzed to measure the hemodynamic response. This work’s major findings are threefold: first, Dom and Sub animals showed statistically significant differences in hemodynamic response to diazepam administration. Secondly, diazepam was found to more strongly affect the Sub group. Thirdly, different time-series profiles were observed post-injection, which can serve as a possible marker for the groups’ differentiation. To the best of our knowledge, this is the first report on the effects of an anxiolytic drug on brain hemodynamic responses in mice using diffused light optical imaging.

© 2014 Optical Society of America

OCIS Codes
(170.0110) Medical optics and biotechnology : Imaging systems
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(170.4580) Medical optics and biotechnology : Optical diagnostics for medicine
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics

ToC Category:
Neuroscience and Brain Imaging

Original Manuscript: March 10, 2014
Revised Manuscript: April 27, 2014
Manuscript Accepted: May 2, 2014
Published: June 11, 2014

David Abookasis, Ariel Shochat, Elimelech Nesher, and Albert Pinhasov, "Exploring diazepam’s effect on hemodynamic responses of mouse brain tissue by optical spectroscopic imaging," Biomed. Opt. Express 5, 2184-2195 (2014)

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