光谱学与光谱分析 |
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Investigations on NIR-SERS Spectra of Oxyhemoglobin for Lung Cancer Based on NIR-SERS Substrate |
GAO Fei1, XIONG Yang2 , ZHANG Ming1, ZHU Shao-ling3 |
1. Physics Teaching and Research Section, Zunyi Medical College, Zunyi 563003, China 2. Application Institute of Spectroscopic Technology, Chuxiong Normal University, Chuxiong 675000, China 3. Clinical Laboratory, Zunyi Medical College Affiliated Hospital, Zunyi 563000, China |
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Abstract Based on new type, efficient and biological compatible near infrared surface enhanced Raman scattering (NIR used-SERS), the oxyhemoglobin of healthy people and patients with lung cancer were studied with NIR-SERS spectra. The study found that the NIR-SERS spectra have evident differences in certain areas, using principal component analysis (PCA) and independent variable T test statistical analysis method, NIR-SERS spectra in the principal component scores PC3, PC4 and PC9 has significant differences, and through the PCA score 2d and 3d scatterplot can differentiate healthy people and patients with lung cancer. The diagnostic specificity was 88% while the result of sensitivity was 80%, with total discriminant accuracy of 84%. Through the attribution analysis, significant differences both used NIR-SERS spectra is related to the vibration of oxygenated hemoglobin and vinyl pyrrole ring groups (CaCm). The study provides experimental basis for lung cancer SERS spectroscopy diagnosis, NIR-SERS technology is expected to become a kind of new clinical auxiliary diagnosis tool.
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Received: 2016-01-27
Accepted: 2016-05-18
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Corresponding Authors:
GAO Fei
E-mail: gaofeiaiqiao@163.com
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