Improved infrared spectroscopic discrimination between gall bladder (GB) polyps and GB cancer using component-descriptive spectral features of separated phases from bile
- Authors
- Jang, Eunjin; Jeong, Jaemin; Yim, Ji-Hye; Kim, Yohan; Lee, Chang Hee; Choi, Dongho; Chung, Hoeil
- Issue Date
- Aug-2019
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- ANALYST, v.144, no.16, pp.4826 - 4834
- Indexed
- SCIE
SCOPUS
- Journal Title
- ANALYST
- Volume
- 144
- Number
- 16
- Start Page
- 4826
- End Page
- 4834
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/13283
- DOI
- 10.1039/c9an00878k
- ISSN
- 0003-2654
- Abstract
- This study demonstrates a unique strategy for enhancing infrared (IR) spectroscopic discrimination between gall bladder (GB) polyps and cancer. This strategy includes the separation of raw bile juice into three sections of organic, aqueous, and amphiphilic phases and a cooperative combination of all IR spectral features of each separated phase for the discrimination. Raw bile juice is viscous and complex in composition because it contains fatty acids, cholesterol, proteins, phospholipids, bilirubin, and other components; therefore, the acquisition of IR spectra providing more component-discernible information is fundamental for improving discrimination. For this purpose, raw bile juice was separated into an aqueous phase, mostly containing bile salts, an organic phase with isolated lipids, and an amphiphilic phase, mainly containing proteins. The subsequent IR spectra of each separated phase were mutually characteristic and complementary to each other. When all the IR spectral features were combined, the discrimination was improved compared to that using the spectra of raw bile juice with no separation. The cooperative integration of more component-specific spectra obtained from each separated phase enhanced the discrimination. In addition, the IR spectra of the major constituents in bile juice, such as bile acids, conjugated bile salts, lecithin, and cholesterol, were recorded to explain the IR features of each separated phase.
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