September 21, 2019

MAYBE DON'T PUT STUFF OTHER THAN AIR IN OUR LUNGS?:

U.S. scientists join effort to solve mysterious vaping-related illnesses (Julie Steenhuysen, 9/21/19, Reuters) 

The U.S. investigation into hundreds of cases of life-threatening lung illnesses related to vaping has turned up a curious abnormality: Many of the victims had pockets of oil clogging up cells responsible for removing impurities in the lungs.

Dr. Dana Meaney-Delman, who has been leading the inquiry at the U.S. Centers for Disease Control and Prevention (CDC) in Atlanta, wants to know where that oil came from. The answer will help explain whether these cells play a key role in the vaping-related outbreak that has killed seven people and sickened 530 so far. [...]

One possibility: The deposits are residue from inhaling vaping oils, such as those containing the marijuana ingredient tetrahydrocannabinol (THC) or vitamin E acetate. Both are considered possible contributors to the current illnesses.

Some researchers suspect the oils are formed inside the lungs as part of the body's natural response to chemicals found in many commercial vaping devices. One theory is that vaping these chemicals may impair the immune system, and make people who vape more vulnerable to respiratory distress, they say.

A study published in the Journal of Clinical Investigation earlier this month has fueled the latter theory.

It found that mice exposed to aerosols of propylene glycol and vegetable glycerin - common solvents used in conventional nicotine vaping devices - developed these same fat-clogged immune cells even though they were never exposed to vaping oils. These mice also had impaired immune systems compared to mice exposed to room air.

Posted by at September 21, 2019 9:51 AM

  

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