Zanella, Delphine;Henket, Monique;Schleich, Florence;Dejong, Thibaut;Louis, Renaud;Focant, Jean-Francois;Stefanuto, Pierre-Hugues published 《Comparison of the effect of chemically and biologically induced inflammation on the volatile metabolite production of lung epithelial cells by GCxGC-TOFMS》 in 2020. The article was appeared in 《Analyst (Cambridge, United Kingdom)》. They have made some progress in their research.Quality Control of 2,5-Dimethyl-2,5-hexanediol The article mentions the following:
Exhaled breath anal. has a high potential for early non-invasive diagnosis of lung inflammatory diseases, such as asthma. The characterization and understanding of the inflammatory metabolic pathways involved into volatile organic compounds (VOCs) production could bring exhaled breath anal. into clin. practice and thus open new therapeutic routes for inflammatory diseases. Lung inflammation was simulated in vitro using A549 epithelial cells. The authors compared the VOC production from A549 epithelial cells after a chem. induced oxidative stress in vitro, exposing the cells to H2O2, and a biol. stress, exposing the cells to an inflammatory pool of sputum supernatants. Special attention was devoted to define proper neg. and pos. controls (8 different types) for the authors’ in vitro models, including healthy sputum coculture. Sputum from 25 asthmatic and 8 healthy patients were collected to create each pool of supernatants. Each sample type was analyzed in 4 replicates using solid-phase microextraction (SPME) comprehensive two-dimensional gas chromatog. hyphenated to time-of-flight mass spectrometry (GCxGC-TOFMS). This approach offers high resolving power for complex VOC mixtures According to the type of inflammation induced, significantly different VOCs were produced by the epithelial cells compared to all controls. For both chem. and biol. challenges, an increase of carbonyl compounds (54%) and hydrocarbons (31%) was observed Only the biol. inflammation model showed a significant cell proliferation together with an increased VOC production linked to asthma airway inflammation. This study presents a complete GCxGC-TOFMS workflow for in vitro VOC anal., and its potential to characterize complex lung inflammatory mechanisms. The experimental procedure involved many compounds, such as 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .
2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Quality Control of 2,5-Dimethyl-2,5-hexanediol
Reference:
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