WASHINGTON- E-cigarette is generally presumed as safe and thus is quite popular among both youngsters and adults. But a recent study has revealed that e-cigarette is detrimental to health.
A team of US researchers has found that e-cigarettes are toxic and can directly attack lung cells, weakening the immune system and boosting bacterial virulence.
“The study shows that e-cigarette vapor is not benign, at high doses it can directly kill lung cells which is frightening,” said senior author Laura E. Crotty Alexander, staff physician at the Veterans Affairs San Diego Healthcare System and assistant clinical professor at University of California’s (UC) San Diego School of Medicine.
“We already knew that inhaling heated chemicals, including the e-liquid ingredients nicotine and propylene glycol, could not possibly be good for you. This work confirms that inhalation of e-cigarette vapor daily leads to changes in the inflammatory milieu inside the airways,” Alexander added in a paper published in the Journal of Molecular Medicine.
Alexander’s team saw their findings hold up in mice. Inflammatory markers, signs of full-body inflammation — in the airways and blood of mice that inhaled e-cigarette vapors for one hour a day, five days a week, for four weeks were elevated by 10 percent compared to unexposed mice.
“Some of the changes we have found in mice are also found in the airways and blood of conventional cigarette smokers, while others are found in humans with cancer or inflammatory lung diseases,” Alexander noted.
Conversely, the study also showed that bacterial pathogens exposed to e-cigarette vapor benefited.
Staphylococcus aureus bacteria, which are responsible for nitrate reduction in the body, were better able to form biofilms, adhere to and invade airway cells and resist human anti-microbial peptides after exposure to e-cigarette vapor.
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