Native Fluorescence Spectroscopy of Blood Plasma in the Characterization of Oral Malignancy

Madhuri, S and Vengadesan, N and Aruna, P and Koteeswaran, D and Venkatesan, P and Ganesan, S (2003) Native Fluorescence Spectroscopy of Blood Plasma in the Characterization of Oral Malignancy. Photochemistry and Photobiology, 78 (2). pp. 197-204. ISSN Print: 0031-8655; Online: 1751-1097

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Native fluorescence characteristics blood plasma were studied in the visible spectral region, at two different excitation wavelengths, 405 and 420 nm, to discriminate patients with different stages of oral malignancy from healthy subjects. The fluorescence spectra of blood plasma of oral malignant subjects exhibit characteristic spectral differences with respect to normal subjects. Different ratios were calculated using the fluorescence intensity values at those emission wavelengths that give characteristic spectral features of each group of experimental subjects studied. These fluorescence intensity ratios were used as input variables for a multiple linear discriminant analysis across different groups. Leave-one out cross-validation was used to check the reliability of each discriminant analysis performed. The discriminant analysis performed across normal and oral cancerous subjects classified 94.7% of the original grouped cases and 93.7% of the cross-validated grouped cases. A classification algorithm was developed on the basis of the score of the discriminant functions (discriminant score) resulted in the analyses. The diagnostic potentiality of the present technique was also estimated in the discrimination of malignant subjects from normal and nonmalignant diseased subjects such as liver diseases. In the discriminant analysis performed across the three groups, normal, oral malignancy (including early and advanced stages) and liver diseases, 99% of the original grouped cases and 95.9% of the cross-validated grouped cases were correctly classified. Similar analysis performed across normal, early stage of oral malignancy, advanced oral malignancy and liver diseases correctly classified 94.9% of the original grouped cases and 91.8% of the cross-validated grouped cases.

Item Type: Article
Subjects: Tuberculosis > Laboratory Research > Bacteriological
Divisions: Basic Science Research > Bacteriology
Depositing User: Dr. Rathinasabapati R
Date Deposited: 12 Nov 2013 10:18
Last Modified: 09 Mar 2016 10:53

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