Multiphoton morpho-functional imaging of healthy colon mucosa, adenomatous polyp and adenocarcinoma

Year: 2013

Authors: Cicchi R., Sturiale A., Nesi G., Kapsokalyvas D., Alemanno G., Tonelli F., Pavone F.S.

Autors Affiliation: National Institute of Optics, National Research Council (INO-CNR), Largo E. Fermi 6, Florence, I-50125, Italy; European Laboratory for Non-Linear Spectroscopy (LENS), Via N. Carrara 1, Sesto Fiorentino, I-50019, Italy; Department of Clinical Physiopathology, Surgical Unit, University of Florence, Florence, I-50100, Italy; Division of Human Pathology and Oncology, Department of Surgical and Medical Critical Care, University of Florence, Florence, I-50100, Italy; Department of Physics, University of Florence, Via Giovanni Sansone 1, 50019, Sesto Fiorentino, Italy

Abstract: Two-photon spectral resolved imaging was used to image fresh human biopsies of colon tissue and to characterize healthy colon mucosa, adenomatous polyp and adenocarcinoma by means of a morpho-functional analysis. Morphological examination, performed using endogenous tissue fluorescence, discriminated adenomatous and adenocarcinoma tissues from normal mucosa in terms of cellular asymmetry and nucleus-to-cytoplasm ratio. Good agreement was found between multiphoton images and histological examination performed on the same samples. Further characterization, performed by means of spectral-resolved analysis of NADH and FAD fluorescence, demonstrated an altered metabolic activity in both adenomatous and adenocarcinoma tissues compared to healthy mucosa. This morpho-functional approach may represent a powerful method to be used in combination with endoscopy for in vivo optical diagnosis of colon cancer and may be extended to other tissues. (C) 2013 Optical Society of America


Volume: 4 (7)      Pages from: 1204  to: 1213

More Information: The research leading to these results has received funding: from the European Union Seventh Framework Programme (FP7/2007-2013) under grant agreements 228334 and 284464; from the Italian Ministry for Education, University and Research in the framework of the Flagship Project NANOMAX; from the Ente Cassa di Risparmio di Firenze (private foundation).
KeyWords: Cytology; Fluorescence; Histology, Colon tissues; Functional approach; Functional imaging; Histological examination; Metabolic activity; Multiphotons; Optical Diagnosis; Spectral resolved, Tissue
DOI: 10.1364/BOE.4.001204

Citations: 33
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