Urinary nucleosides as biomarkers of breast, colon, lung, and gastric cancer in Taiwanese

Urinary nucleosides are associated with many types of cancer. In this study, six targeted urinary nucleosides, namely adenosine, cytidine, 3-methylcytidine, 1-methyladenosine, inosine, and 2-deoxyguanosine, were chosen to evaluate their role as biomarkers of four different types of cancer: lung canc...

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Veröffentlicht in:PloS one 2013-12, Vol.8 (12), p.e81701-e81701
Hauptverfasser: Hsu, Wei-Yi, Chen, Chao-Jung, Huang, Yu-Chuen, Tsai, Fuu-Jen, Jeng, Long-Bin, Lai, Chien-Chen
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Jeng, Long-Bin
Lai, Chien-Chen
description Urinary nucleosides are associated with many types of cancer. In this study, six targeted urinary nucleosides, namely adenosine, cytidine, 3-methylcytidine, 1-methyladenosine, inosine, and 2-deoxyguanosine, were chosen to evaluate their role as biomarkers of four different types of cancer: lung cancer, gastric cancer, colon cancer, and breast cancer. Urine samples were purified using solid-phase extraction (SPE) and then analyzed using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The Mann-Whitney U test and Principal Component Analysis (PCA) were used to compare differences in urinary nucleosides between patients with one of four types of cancer and healthy controls. The diagnostic sensitivity of single nucleosides for different types of cancer ranged from 14% to 69%. In contrast, the diagnostic sensitivity of a set of six nucleosides ranged from 37% to 69%. The false-positive identification rate associated with the set of six nucleosides in urine was less than 2% compared with that of less than 5% for a single nucleoside. Furthermore, combining the set of six urinary nucleosides with carcinoembryonic antigen improved the diagnostic sensitivity for colon cancer. In summary, the study show that a set of six targeted nucleosides is a good diagnostic marker for breast and colon cancers but not for lung and gastric cancers.
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In this study, six targeted urinary nucleosides, namely adenosine, cytidine, 3-methylcytidine, 1-methyladenosine, inosine, and 2-deoxyguanosine, were chosen to evaluate their role as biomarkers of four different types of cancer: lung cancer, gastric cancer, colon cancer, and breast cancer. Urine samples were purified using solid-phase extraction (SPE) and then analyzed using high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS). The Mann-Whitney U test and Principal Component Analysis (PCA) were used to compare differences in urinary nucleosides between patients with one of four types of cancer and healthy controls. The diagnostic sensitivity of single nucleosides for different types of cancer ranged from 14% to 69%. In contrast, the diagnostic sensitivity of a set of six nucleosides ranged from 37% to 69%. The false-positive identification rate associated with the set of six nucleosides in urine was less than 2% compared with that of less than 5% for a single nucleoside. Furthermore, combining the set of six urinary nucleosides with carcinoembryonic antigen improved the diagnostic sensitivity for colon cancer. 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The false-positive identification rate associated with the set of six nucleosides in urine was less than 2% compared with that of less than 5% for a single nucleoside. Furthermore, combining the set of six urinary nucleosides with carcinoembryonic antigen improved the diagnostic sensitivity for colon cancer. In summary, the study show that a set of six targeted nucleosides is a good diagnostic marker for breast and colon cancers but not for lung and gastric cancers.</abstract><cop>United States</cop><pub>Public Library of Science</pub><pmid>24367489</pmid><doi>10.1371/journal.pone.0081701</doi><tpages>e81701</tpages><oa>free_for_read</oa></addata></record>
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subjects Adenosine
Analysis
Biological markers
Biomarkers
Biomarkers, Tumor - urine
Breast cancer
Breast Neoplasms - urine
Cancer
Capillary electrophoresis
Carcinoembryonic antigen
Chromatography
Colon
Colon cancer
Colonic Neoplasms - urine
Colorectal cancer
Deoxyguanosine
Diagnosis
Diagnostic systems
Gastric cancer
High performance liquid chromatography
Hospitals
Humans
Ions
Liquid chromatography
Lung cancer
Lung diseases
Lung Neoplasms - urine
Mass spectrometry
Mass spectroscopy
Medical diagnosis
Medical research
Nucleosides
Nucleosides - urine
Principal components analysis
Scientific imaging
Sensitivity
Stomach cancer
Stomach Neoplasms - urine
Studies
Taiwan
Transfer RNA
Urine
title Urinary nucleosides as biomarkers of breast, colon, lung, and gastric cancer in Taiwanese
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