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Aldehydes (nonanal and hexanal) in rat and human bronchoalveolar lavage fluid after ozone exposure.

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We hypothesized that exposure of healthy humans to ozone at concentrations found in ambient air causes both ozonation and peroxidation of lipids in lung epithelial lining fluid. Smokers (12) and nonsmokers (15) were exposed once to air and twice to 0.22 ppm ozone for four hours with exercise in an

Cytokine contributions to alterations of the volatile metabolome induced by inflammation.

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Several studies demonstrate that inflammation affects body odor. Volatile signals associated with inflammation induced by pyrogens like LPS are detectable both by conspecifics and chemical analyses. However, little is known about the mechanisms which translate detection of a foreign molecule or

Analysis of Exhaled Breath Volatile Organic Compounds in Inflammatory Bowel Disease: A Pilot Study.

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OBJECTIVE Distinguishing between the inflammatory bowel diseases [IBD], Crohn's disease [CD] and ulcerative colitis [UC], is important for determining management and prognosis. Selected ion flow tube mass spectrometry [SIFT-MS] may be used to analyse volatile organic compounds [VOCs] in exhaled

Comparison between exhaled and sputum oxidative stress biomarkers in chronic airway inflammation.

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The aim of the present study was to compare aldehyde levels resulting from lipid peroxidation in exhaled breath condensate (EBC) and induced sputum (IS) supernatant of subjects with asthma and chronic obstructive pulmonary disease (COPD). Aldehydes (malondialdehyde (MDA), acrolein, n-hexanal (C6),

Ozone exposure increases aldehydes in epithelial lining fluid in human lung.

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We hypothesized that exposure of healthy humans to ozone causes both ozonation and peroxidation of lipids in lung epithelial lining fluid. Twelve smokers and 15 nonsmokers (eight lung function "responders" and seven "nonresponders") were exposed once to air and twice to 0. 22 ppm ozone for 4 h with

Elevated levels of proinflammatory volatile metabolites in feces of high fat diet fed KK-Ay mice.

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When the microfloral composition deteriorates, it triggers low-level chronic inflammation associated with several lifestyle-related diseases including obesity and diabetic mellitus. Fecal volatile organic compounds (VOCs) have been found to differ in gastrointestinal diseases as well as intestinal

Detection of aldehydes in bronchoalveolar lavage of rats exposed to ozone.

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We report the detection of hexanal, heptanal, and nonanal in the bronchoalveolar lavage (BAL) of rats exposed to 0.5 to 10 ppm ozone with or without simultaneous 5% CO2. These three aldehydes primarily result from the Criegee ozonation of specific mono- or polyunsaturated fatty acids that are

Lipid ozonation products activate phospholipases A2, C, and D.

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Ozone exposure, in vitro, has been shown to activate phospholipases A2 (PLA2), C (PLC), and D (PLD) in airway epithelial cells. However, because of its high reactivity, ozone cannot penetrate far into the air/lung tissue interface. It has been proposed that ozone reacts with unsaturated fatty acids

Effect of 4-hydroxynonenal on superoxide anion production from primed human neutrophils.

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HNE (4-hydroxy-2,3-trans-nonenal), and aldehydic product of lipid peroxidation, has been reported to modulate different functional parameters of human and rat neutrophils (PMNs), such as chemiluminescence, migration and some enzymatic activities, thus exerting effects that varied according to the

Low-concentration ozone reacts with plasmalogen glycerophosphoethanolamine lipids in lung surfactant.

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Ozone is a common environmental toxicant to which individuals are exposed to on a daily basis. While biochemical end points such as increased mortality, decrements in pulmonary function, and initiation of inflammatory processes are known, little is actually understood regarding the chemical

Formation of potentially toxic carbonyls during oxidation of triolein in the presence of alimentary antioxidants.

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UNASSIGNED A relation between oil uptake and cancer as well as induction of hepatic inflammation was shown earlier. It is discussed that the main oil oxidation products-hydroperoxides and carbonyls-might be the reason for the mentioned diseases. In this manuscript quantitative determination of

Possible role of aldehydic lipid peroxidation products as chemoattractants.

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Previous studies showed that the lipid peroxidation product 4-hydroxy-trans-2-nonenal (HNE) stimulates the rat neutrophil oriented migration in vitro within a micromolar range. Its effect is weak with respect to other known chemoattractants, but highly significant on the basis of a two-way analysis

Analysis of chemical composition in Chinese olive leaf tea by UHPLC-DAD-Q-TOF-MS/MS and GC-MS and its lipid-lowering effects on the obese mice induced by high-fat diet.

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In the present study, the chemical constituents and inhibitory effects of Chinese olive leaf tea (OLT) on α-amylase, α-glucosidase, and its lipid-lowering effects on obese mice induced by a high fat diet were evaluated. In total, 17 compounds including hydroxytyrosol, hydroxytyrosol-glucoside were

Volatile compounds and antioxidative activity of Porophyllum tagetoides extracts.

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Porophyllum tagetoides is an annual warm-weather herb that has an intense typical smell. Its leaves are commonly used in soup preparation and traditional medicine for treatment of inflammatory diseases. Its volatile compounds and antioxidant properties were evaluated in crude, aqueous and ethanol

Human carbonyl reductase 1 as efficient catalyst for the reduction of glutathionylated aldehydes derived from lipid peroxidation.

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Human recombinant carbonyl reductase 1 (E.C. 1.1.1.184, hCBR1) is shown to efficiently act as aldehyde reductase on glutathionylated alkanals, namely 3-glutathionyl-4-hydroxynonanal (GSHNE), 3-glutathionyl-nonanal, 3-glutathionyl-hexanal and 3-glutathionyl-propanal. The presence of the glutathionyl

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