Intravital high-resolution optical imaging of individual vessel response to photodynamic treatment

Intravital imaging using confocal microscopy facilitates high-resolution studies of cellular and molecular events . We use this, complemented by Doppler optical coherence tomography (OCT), to assess blood flow in a mouse dorsal skin-fold window chamber model to image the response of individual blood...

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Bibliographic Details
Published in:Journal of Biomedical Optics 2008-07, Vol.13 (4), p.040502-040503
Main Authors: Khurana, Mamta, Moriyama, Eduardo H, Mariampillai, Adrian, Wilson, Brian C
Format: Article
Language:English
Subjects:
Animals
Antibodies
Biomedical materials
Blood vessels
confocal microscopy
endothelial
Endothelial cells
Endothelial Cells - cytology
Endothelial Cells - drug effects
Image Enhancement - methods
Imaging
In vivo tests
intravital
Mice
Mice, Nude
Microscopy, Confocal - methods
Microscopy, Fluorescence - methods
optical coherence tomography (OCT)
Photochemotherapy - methods
photodynamic therapy (PDT)
Porphyrins - administration & dosage
Surgical implants
Tomography, Optical Coherence - methods
vascular
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Summary:Intravital imaging using confocal microscopy facilitates high-resolution studies of cellular and molecular events . We use this, complemented by Doppler optical coherence tomography (OCT), to assess blood flow in a mouse dorsal skin-fold window chamber model to image the response of individual blood vessels to localized photodynamic therapy (PDT). Specific fluorescent cell markers were used to assess the effect on the vascular endothelial cell lining of the treated vessels. A fluorescently tagged antibody against an endothelial transmembrane glycoprotein (CD31) was used to image endothelial cell integrity in the targeted blood vessel. A cell permeability (viability) indicator, SYTOX Orange, was also used to further assess damage to endothelial cells. A fluorescently labeled anti-CD41 antibody that binds to platelets was used to confirm platelet aggregation in the treated vessel. These optical techniques enable dynamic assessment of responses to PDT , at both the vascular endothelial cell and whole vessel levels.
ISSN:1083-3668
1560-2281
DOI:10.1117/1.2965545