Gastric Cancer Detection Using Kubelka-Munk Spectral Function of DNA and Protein Absorption Bands
LI Lan-quan1,WEI Hua-jiang1*,GUO Zhou-yi1,YANG Hong-qin2,XIE Shu-sen2,CHEN Xue-mei3,LI Li-bo4, HE Bo-hua4,WU Guo-yong5,LU Jian-jun5
1. Key Laboratory of Laser Life Science and Institute of Laser Life Science of Ministry of Education, South China Normal University, Guangzhou 510631, China 2. Key Laboratory of Optoelectronic Science and Technology for Medicine of Ministry of Education, Fujian Normal University, Fuzhou 350007, China 3. Department of Ophthalmology, The First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China 4. Department of Surgery, First Affiliated Hospital of Guangdong College of Pharmacy, Guangzhou 510224, China 5. Department of Surgery, First Affiliated Hospital of Sun Yat-Sen University, Guangzhou 510080, China
Abstract:Differential diagnosis for epithelial tissues of normal human gastric, undifferentiation gastric adenocarcinoma, gastric squamous cell carcinomas, and poorly differentiated gastric adenocarcinoma were studied using the Kubelka-Munk spectral function of the DNA and protein absorption bands at 260 and 280 nm in vitro. Diffuse reflectance spectra of tissue were measured using a spectrophotometer with an integrating sphere attachment. The results of measurement showed that for the spectral range from 250 to 650 nm, pathological changes of gastric epithelial tissues induced that there were significant differences in the averaged value of the Kubelka-Munk function f(r∞) and logarithmic Kubelka-Munk function log[f(r∞)] of the DNA absorption bands at 260 nm between epithelial tissues of normal human stomach and human undifferentiation gastric cancer, between epithelial tissues of normal human stomach and human gastric squamous cell carcinomas, and between epithelial tissues of normal human stomach and human poorly differentiated cancer. Their differences were 68.5%(p<0.05), 146.5%(p<0.05), 282.4%(p<0.05), 32.4%(p<0.05), 56.0%(p<0.05) and 83.0%(p<0.05) respectively. And pathological changes of gastric epithelial tissues induced that there were significant differences in the averaged value of the Kubelka-Munk function f(r∞) and logarithmic Kubelka-Munk function log[f(r∞)] of the protein absorption bands at 280 nm between epithelial tissues of normal human stomach and human undifferentiation gastric cancer, between epithelial tissues of normal human stomach and human gastric squamous cell carcinomas, and between epithelial tissues of normal human stomach and human poorly differentiated cancer. Their differences were 86.8%(p<0.05), 262.9%(p<0.05), 660.1%(p<0.05) and 34%(p<0.05), 72.2%(p<0.05), 113.5%(p<0.05) respectively. And pathological changes of gastric epithelial tissues induced that there were significant differences in the averaged value of the Kubelka-Munk function f(r∞) and logarithmic Kubelka-Munk function log[f(r∞)] of the β-carotene absorption bands at 480 nm between epithelial tissues of normal human stomach and human undifferentiation gastric cancer, between epithelial tissues of normal human stomach and human gastric squamous cell carcinomas, and between epithelial tissues of normal human stomach and human poorly differentiated cancer. Their differences were 59.5%(p<0.05), 73%(p<0.05), 258.9%(p<0.05), 118.7%(p<0.05), 139.2%(p<0.05), and 324.6%(p<0.05) respectively. It is obvious that pathological changes of gastric epithelial tissues induced that there were significant changes in the contents of the DNA, protein and β-carotene of gastric epithelial tissues. The conclusion can be applied to rapid, low-cost and noninvasive the optical biopsy for gastric cancer and provides a useful reference.
Key words:Gastric cancer diagnosis;Kubelka-Munk spectral function;Diffuse reflectance spectroscopy;DNA;Protein;β-carotene
李兰权1, 魏华江1*, 郭周义1, 杨洪钦2, 谢树森2, 陈雪梅3, 李力波4, 何博华4, 巫国勇5, 鲁建军5 . 采用DNA和蛋白质吸收带的Kubelka-Munk光谱函数检测人胃癌[J]. 光谱学与光谱分析, 2009, 29(09): 2499-2504.
LI Lan-quan1,WEI Hua-jiang1*,GUO Zhou-yi1,YANG Hong-qin2,XIE Shu-sen2,CHEN Xue-mei3,LI Li-bo4, HE Bo-hua4,WU Guo-yong5,LU Jian-jun5. Gastric Cancer Detection Using Kubelka-Munk Spectral Function of DNA and Protein Absorption Bands . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(09): 2499-2504.
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