Native cellular fluorescence characteristics of normal and malignant epithelial cells from human larynx

Diagaradjane Parmeswearan; Singaravelu Ganesan; R. Nalini; Prakasa Rao Aruna; V. Veeraganesh; Robert R. Alfano

doi:10.1117/12.280222

18 August 1997 Native cellular fluorescence characteristics of normal and malignant epithelial cells from human larynx

Diagaradjane Parmeswearan, Singaravelu Ganesan, R. Nalini, Prakasa Rao Aruna, V. Veeraganesh, Robert R. Alfano

Proceedings Volume 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II; (1997) https://doi.org/10.1117/12.280222
Event: BiOS '97, Part of Photonics West, 1997, San Jose, CA, United States

Abstract

Many applications of native fluorescence spectroscopy of intrinsic biomolecules such as Try, Tyr, Phe, NADH and FAD are reported on both the characterization and the discrimination of malignant tissues from the normal. In the field of diagnostic oncology, extensive studies have been made to distinguish the normal from malignant condition in breast, cervix, colon and bronchus. From the studies made by Alfano and co-workers, it was found that the emission at 340 and 440 nm under UV excitation have shown statistically significant difference between normal and malignant tissues. As tissues are highly complex in nature, it is worth to known whether the changes arise from cells or from other extracellular tissue components, so as to enable us to have better understanding on the transformation mechanism of normal into malignant and to go for an improved approach in the effective optical diagnosis. In this context, the present study addresses the question of whether there are differences in the native cellular fluorescence characteristics between normal and malignant epithelial cells from human larynx. With this aim, the UV fluorescence emission spectra in the wavelength region of excitation between 270 - 310 nm and the excitation spectra for 340 nm emission were measured and analyzed. In order to quantify the altered fluorescence signal between the normal and malignant cells, different ratio parameters were introduced.

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Diagaradjane Parmeswearan, Singaravelu Ganesan, R. Nalini, Prakasa Rao Aruna, V. Veeraganesh, and Robert R. Alfano "Native cellular fluorescence characteristics of normal and malignant epithelial cells from human larynx", Proc. SPIE 2979, Optical Tomography and Spectroscopy of Tissue: Theory, Instrumentation, Model, and Human Studies II, (18 August 1997); https://doi.org/10.1117/12.280222

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