E-viri
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Higham, Andrew; Rattray, Nicholas J W; Dewhurst, Jennifer A; Trivedi, Drupad K; Fowler, Stephen J; Goodacre, Royston; Singh, Dave
Respiratory research, 05/2016, Letnik: 17, Številka: 1Journal Article
The use of electronic cigarettes (e-cigs) is increasing and there is widespread perception that e-cigs are safe. E-cigs contain harmful chemicals; more research is needed to evaluate the safety of e-cig use. Our aim was to investigate the effects of e-cigs on the inflammatory response of human neutrophils. Neutrophils were exposed to e-cig vapour extract (ECVE) and the expression of CD11b and CD66b was measured by flow cytometry and MMP-9 and CXCL8 by ELISA. We also measured the activity of neutrophil elastase (NE) and MMP-9, along with the activation of inflammatory signalling pathways. Finally we analysed the biochemical composition of ECVE by ultra-high performance liquid chromatography mass spectrometry. ECVE caused an increase in the expression of CD11b and CD66b, and increased the release of MMP-9 and CXCL8. Furthermore, there was an increase in NE and MMP-9 activity and an increase in p38 MAPK activation. We also identified several harmful chemicals in ECVE, including known carcinogens. ECVE causes a pro-inflammatory response from human neutrophils. This raises concerns over the safety of e-cig use.
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