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A new Australian study showed that whether smokers switch to traditional tobacco, electronic cigarettes or new heating without burning, they may still cause lung damage.
Conducted by researchers from the University of Tasmania and the University of Sydney, in collaboration with the Indian National Institute of Pharmaceutical Education and Research, this new study examined the effects of Nicotine sources on two types of cells extracted from the lungs – epithelial cells and smooth muscle cells.
Epithelial cells provide the first line of defense against foreign particles entering the airways, while smooth muscle cells maintain the airway structure.
Since smoking can impair the normal functioning of cells, which can lead to breathing problems, the researchers exposed the cells to different concentrations of traditional tobacco smoke, electronic cigarette vapors and vapors from one person. tobacco device not burning heat.
Unlike the electronic cigarette, which heats a solution called e-liquid and creates a vapor, this new device heats solid tobacco.
The results, published in the journal ERJ Open Research on February 1, 2019, showed that cigarette smoke and heated tobacco vapors were highly toxic to lung cells at lower and higher concentrations, with vapors of electronic cigarettes being toxic at higher concentrations.
The researchers say these concentrations represent the levels of nicotine found in chronic smokers.
"We have observed different levels of cellular toxicity with all forms of exposure in human lung cells.
"What stands out clearly is that new products are by no means less toxic to cells than conventional cigarettes or e-cigarettes," commented Dr. Sukhwinder Sohal, one of the main authors of the study.
"Our results suggest that all three are toxic to the cells in our lungs and that these new heated tobacco devices are as harmful as smoking traditional cigarettes."
In recent years, many smokers have switched from traditional tobacco to new appliances, convinced that they are safer than cigarettes, or that they will help them quit smoking altogether.
However, the researchers say the current findings build on existing data suggesting that new electronic nicotine delivery devices may not be a safer substitute for smoking.
"Smoking is the leading cause of preventable death, and with the introduction of the electronic cigarette over the past decade, the trend of nicotine absorption is not going to slow down in the near future.
"If the current trend continues, smoking will cause more than eight million deaths annually by 2030 in the world," said Dr. Pawan Sharma, lead author.
"It took us almost five decades to understand the harmful effects of cigarette smoke and we do not yet know the long-term impact of e-cigarette use.
"These devices for solid tobacco heating are relatively new and it will take decades before we fully understand the effects on human health," said Dr. Sohal.
"What we do know is that damage to these two types of lung cells can destroy lung tissue, leading to life-threatening diseases such as chronic obstructive pulmonary disease, lung cancer and pneumonia, and can increase the risk of death. risk of developing asthma. that these devices are a safer option. – AFP Relaxnews
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