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11 July 2007 Simultaneous optical coherence and multiphoton microscopy of skin-equivalent tissue models
Jennifer K. Barton, Shuo Tang, Ryan Lim, Bruce J. Tromberg
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Proceedings Volume 6627, Optical Coherence Tomography and Coherence Techniques III; 66270X (2007) https://doi.org/10.1117/12.728062
Event: European Conferences on Biomedical Optics, 2007, Munich, Germany
Abstract
Three-layer skin-equivalent models (rafts) were created consisting of a collagen/fibroblast layer and an air-exposed keratinocyte layer. Rafts were imaged with a tri-modality microscope including optical coherence (OC), two-photon excited fluorescence (TPEF), and second harmonic generation (SHG) channels. Some rafts were stained with Hoechst 33343 or rhodamine 123, and some were exposed to dimethyl sulfoxide (DMSO). OC microscopy revealed signal in cell cytoplasm and nuclear membranes, and a characteristic texture in the collagen/fibroblast layer. TPEF showed signal in cell cytoplasm and from collagen, and stained specimens revealed cell nuclei or mitochondria. There was little SHG in the keratinocyte layer, but strong signal from collagen bundles. Endogenous signals were severely attenuated in DMSO treated rafts; stained samples revealed shrunken and distorted cell structure. OC, TPEF, and SHG can provide complementary and non-destructive information about raft structure and effect of chemical agents.
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Jennifer K. Barton, Shuo Tang, Ryan Lim, and Bruce J. Tromberg "Simultaneous optical coherence and multiphoton microscopy of skin-equivalent tissue models", Proc. SPIE 6627, Optical Coherence Tomography and Coherence Techniques III, 66270X (11 July 2007); https://doi.org/10.1117/12.728062
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KEYWORDS
Second-harmonic generation
Collagen
Rhodamine
Optical coherence tomography
Skin
Coherence (optics)
Luminescence
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