Doctoral Dissertations
Abstract
"Cancer is the second leading cause of death worldwide, and deaths from cancer worldwide are projected to continue rising, with an estimated 12 million deaths in 2030. Cancer occurs when cells in a part of the body begin to grow out of control. It develops very rapidly, and early diagnosis offers a greater chance of successful treatment and a higher survival rate. Biomarkers are good potential tools for early diagnosis. The main hypothesis of this study is that the levels of certain metabolites present in human urine can indicate the current or future behavior of cancer. Therefore, these studies focused on metabolomics biomarker analysis in urine. Eight pteridine molecules were analyzed using a house-built, high-performance capillary electrophoresis with laser-induced fluorescence detection (HPCE-LIF) in the first study. The results showed that 5 pteridine molecules were elevated in cancer compared to non-cancer urine samples. The second study investigated the levels of proline, kynurenine, uracil, and glycerol-3-phosphate in 126 patients with genitourinary malignancies (63 prostate cancers & 63 bladder cancers) and compared them to 68 normal samples using a validated LC/MS/MS method. Statistical analysis showed that the above biomarkers were not reliable enough for prostate cancer detection or for differentiating the aggressiveness of prostate cancer. The third study describes a validated, reliable, fast, and simple HPLC-MS/MS method to simultaneously separate and detect potential urinary bladder cancer biomarkers such as taurine, L-phenylalanine, hippuric acid and creatinine in urine samples. The final paper is a review article that discusses the applications of different LC-MS/MS and CE-MS techniques in prostate biomarker discovery"--Abstract, page iv.
Advisor(s)
Ma, Yinfa
Committee Member(s)
Whitefield, Philip D.
Nam, Paul Ki-souk
Winiarz, Jeffrey G.
Westenberg, David J.
Department(s)
Chemistry
Degree Name
Ph. D. in Chemistry
Sponsor(s)
Foundation of Chemical Research
Missouri Research Board
Missouri University of Science and Technology
Publisher
Missouri University of Science and Technology
Publication Date
2012
Journal article titles appearing in thesis/dissertation
- Investigation of urinary pteridine levels as potential biomarkers for non-invasive diagnosis of cancer
- Investigation of urinary metabolites as potential biomarkers for prostate cancer detection
- Quantitative determination of taurine and related biomarkers in urine by liquidchromatography- tandem mass spectrometry
- Biomarker analysis in prostate cancer using LC-MS and CE-MS (Review Article)
Pagination
xii, 114 pages
Note about bibliography
Includes bibliographical references.
Rights
© 2012 Sanjeewa Bandara Gamagedara, All rights reserved.
Document Type
Dissertation - Open Access
File Type
text
Language
English
Subject Headings
Tumor markersCancer -- DiagnosisPteridines -- Testing
Thesis Number
T 10551
Print OCLC #
903536635
Electronic OCLC #
904020592
Recommended Citation
Gamagedara, Sanjeewa Bandara, "Investigation of biomarkers for noninvasive early diagnosis of cancer" (2012). Doctoral Dissertations. 2364.
https://scholarsmine.mst.edu/doctoral_dissertations/2364