| Title: | Lipid Peroxidation Produces a Diverse Mixture of Saturated and Unsaturated Aldehydes in Exhaled Breath That Can Serve as Biomarkers of Lung Cancer-A Review |
| Author(s): | Sutaria SR; Gori SS; Morris JD; Xie Z; Fu XA; Nantz MH; |
| Address: | "Department of Chemistry, University of Louisville, Louisville, KY 40292, USA. Department of Neurology, School of Medicine, Johns Hopkins University, Baltimore, MD 21205, USA. Department of Chemical Engineering, University of Louisville, Louisville, KY 40292, USA" |
| ISSN/ISBN: | 2218-1989 (Print) 2218-1989 (Electronic) 2218-1989 (Linking) |
| Abstract: | "The peroxidation of unsaturated fatty acids is a widely recognized metabolic process that creates a complex mixture of volatile organic compounds including aldehydes. Elevated levels of reactive oxygen species in cancer cells promote random lipid peroxidation, which leads to a variety of aldehydes. In the case of lung cancer, many of these volatile aldehydes are exhaled and are of interest as potential markers of the disease. Relevant studies reporting aldehydes in the exhaled breath of lung cancer patients were collected for this review by searching the PubMed and SciFinder(n) databases until 25 May 2022. Information on breath test results, including the biomarker collection, preconcentration, and quantification methods, was extracted and tabulated. Overall, 44 studies were included spanning a period of 34 years. The data show that, as a class, aldehydes are significantly elevated in the breath of lung cancer patients at all stages of the disease relative to healthy control subjects. The type of aldehyde detected and/or deemed to be a biomarker is highly dependent on the method of exhaled breath sampling and analysis. Unsaturated aldehydes, detected primarily when derivatized during preconcentration, are underrepresented as biomarkers given that they are also likely products of lipid peroxidation. Pentanal, hexanal, and heptanal were the most reported aldehydes in studies of exhaled breath from lung cancer patients" |
| Keywords: | Voc aldehyde biomarker breath analysis exhaled breath lipid peroxidation lung cancer unsaturated; |
| Notes: | "PubMed-not-MEDLINESutaria, Saurin R Gori, Sadakatali S Morris, James D Xie, Zhenzhen Fu, Xiao-An Nantz, Michael H eng Review Switzerland 2022/06/24 Metabolites. 2022 Jun 18; 12(6):561. doi: 10.3390/metabo12060561" |
