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Determination of ketones and ethyl acetate—a preliminary study for the discrimination of patients with lung cancer
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Determination of ketones and ethyl acetate—a preliminary study for the discrimination of patients with lung cancer
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Journal Article
Determination of ketones and ethyl acetate—a preliminary study for the discrimination of patients with lung cancer
2017
Overview
In this work, ten possible volatile biomarkers of lung cancer (acetone, 2-butanone, ethyl acetate, 2-pentanone, 4-methyl-2-pentanone, 2-hexanone, 3-heptanone, 2-heptanone, 3-octanone, and 2-nonanone) have been analyzed to evaluate their different concentration levels in urine samples from lung cancer patients (
n
= 12) and healthy controls (
n
= 12). The volatile compounds were generated with a headspace autosampler and analyzed with a gas chromatograph equipped with a programmed temperature vaporizer and mass spectrometry detector (HS-PTV-GC-MS). With the aim of evaluating the aforementioned differences, a Mann-Whitney
U
test and box-plots were obtained. Very good discrimination between cancer and control groups was achieved for three (ethyl acetate, 3-heptanone, and 3-octanone) of the ten analytes studied. With a view to assigning samples to the group of healthy or ill individuals, the Wilcoxon signed-rank test has been used. In spite of the small number of urine samples assayed, the results may suggest that the studied compounds could be considered useful tools in order to discern samples and they could be employed as a complementary test in a diagnosis.
Graphical abstract
Classification of samples (lung cancer patients and controls) with the Wilcoxon signed rank test.
Publisher
Springer Berlin Heidelberg,Springer,Springer Nature B.V
