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Redox-responsive nanoparticles enhance radiation therapy by altering multifaceted radio-resistance mechanisms in human castration-resistant prostate cancer cells and xenografts. Radiother Oncol 2022; 170:213-223. [DOI: 10.1016/j.radonc.2022.02.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 02/11/2022] [Accepted: 02/18/2022] [Indexed: 12/19/2022]
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Hu YN, Chen D, Zhang TY, Ding J, Feng YQ. Use of ammonium sulfite as a post-column derivatization reagent for rapid detection and quantification of aldehydes by LC-MS. Talanta 2020; 206:120172. [PMID: 31514828 DOI: 10.1016/j.talanta.2019.120172] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 07/22/2019] [Accepted: 07/23/2019] [Indexed: 02/07/2023]
Affiliation(s)
- Yu-Ning Hu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Di Chen
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Tian-Yi Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Jun Ding
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China
| | - Yu-Qi Feng
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), Department of Chemistry, Wuhan University, Wuhan, 430072, China.
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Silva LK, Hile GA, Capella KM, Espenship MF, Smith MM, De Jesús VR, Blount BC. Quantification of 19 Aldehydes in Human Serum by Headspace SPME/GC/High-Resolution Mass Spectrometry. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2018; 52:10571-10579. [PMID: 30133279 DOI: 10.1021/acs.est.8b02745] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Sources of human aldehyde exposure include food additives, combustion of organic matter (tobacco smoke), water disinfection byproducts via ozonation, and endogenous processes. Aldehydes are potentially carcinogenic and mutagenic, and chronic human aldehyde exposure has raised concerns about potential deleterious health effects. To aid investigations of human aldehyde exposure, we developed a novel method to measure 19 aldehydes released from Schiff base protein adducts in serum using controlled acid hydrolysis, solid-phase microextraction (SPME), gas chromatography (GC), and high-resolution mass spectrometry (HRMS). Aldehydes are released from Schiff base protein adducts through acid hydrolysis, and are quantified in trace amounts (μg/L) using stable isotope dilution. Detection limits range from 0.1 to 50 μg/L, with calibration curves spanning 3 orders of magnitude. The analysis of fortified quality control material over a three-month period showed excellent precision and long-term stability (3-22% CV) for samples stored at -70 °C. The intraday precision is also excellent (CV, 1-10%). The method accuracy ranges from 89 to 108% for all measured aldehydes, except acrolein and crotonaldehyde, two aldehydes present in tobacco smoke; their analysis by this method is not considered robust due in part to their reactivity in vivo. However, results strongly suggest that propanal, butanal, isobutanal, and isopentanal levels in smokers are higher than levels in nonsmokers, and thus may be useful as biomarkers of tobacco smoke exposure. This method will facilitate large epidemiological studies involving aldehyde biomonitoring to examine nonoccupational environmental exposures.
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Affiliation(s)
- Lalith K Silva
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
| | - Grace A Hile
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
| | - Kimberly M Capella
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
| | - Michael F Espenship
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
| | - Mitchell M Smith
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
| | - Víctor R De Jesús
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
| | - Benjamin C Blount
- Division of Laboratory Sciences, National Center for Environmental Health , Centers for Disease Control and Prevention , Atlanta , Georgia 30341 , United States
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