Tags: e-cigarette | superbug | mrsa | danger | virulent

E-Cigs Make Superbugs More Dangerous: Study

By    |   Thursday, 22 May 2014 04:24 PM

A team of California scientists has identified yet another reason to be wary of e-cigarettes. In laboratory studies, the researchers found  the vapors from such products increase the aggressiveness of dangerous bacteria such as methicillin-resistant Staphylococcus aureus (MRSA).

Lead researcher Laura Crotty Alexander, M.D., of the University of California San Diego and the Veterans Affairs San Diego Healthcare System, said her experiments showed MRSA resistance to drugs doubled after being exposed to vapors from low-nicotine e-cigarettes and tripled when exposed to high-nicotine vapors.

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"Regular cigarette smoke we all hate because it causes so many bad things and we were really hopeful that e-cigarettes would be a safer alternative," Crotty Alexander told MedPage Today. "However it is very hard to advise our patients in this era where we don't know the effects of e-cigarette smoking."
 
She noted that her research, which was presented at a meeting of the American Thoracic Society in San Diego this week, was done in the laboratory setting, but other researchers are examining possible connections between "vaping" and illness. Since MRSA generally colonizes in the nasopharynx, inhaled vapors would likely affect the bacteria there.
 
She explained that e-cigarette vapors induce MRSA to produce acids as a defense mechanism within the first three hours of exposure, similar to the organisms' mechanism for defending against nitric oxide — one of the components of innate immune responses to infection.
 
Therefore, "the virulence of MRSA is increased by e-cigarette exposure," she said.
 
"So from our laboratory finding showing that its effects on bacteria aren't as severe as those caused by regular cigarette smoke, e-cigarette vapor still is not benign, and it is making these bacteria more aggressive."

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Researchers have found the vapors from e-cigarettes increase the aggressiveness of dangerous bacteria such as methicillin-resistant Staphylococcus aureus (MRSA).
e-cigarette, superbug, mrsa, danger, virulent
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2014-24-22
Thursday, 22 May 2014 04:24 PM
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