Positive effect of the antimicrobial agent in toothpastes increases the risk of bacteria

Обратный эффект: противомикробное средство в зубных пастах усиливает опасные бактерии

Popular antibacterial substance may enhance the resistance of some germs to antibiotics.

Triclosan is an antibacterial compound found in everyday home appliances and personal care products: toothpaste, soap, liquid dishwashing detergent, deodorants, kitchen and bedding, toys, clothing and trash bags, writes Medical News Today.

Manufacturers add a chemical to these products, because they believe that it kills the bacteria that can lead to deterioration of health of people. However, new research shows that triclosan may have the opposite effect.

Обратный эффект: противомикробное средство в зубных пастах усиливает опасные бактерии

The causes of antibiotic resistance

Researchers from Washington University in St. Louis conducted experiments in vitro and in vivo and found that triclosan makes bacteria stronger and more resistant to antibiotics.

In particular, the substance increased the stability of Escherichia coli and Staphylococcus aureus to bactericidal antibiotics up to 10,000 times in vitro.

Also triclosan significantly increased the number of surviving bacterial cells.

In the study, researchers added triclosan in drinking water of rodents to recreate the levels that they expect to find in people.

According to their estimates, approximately 75% of people in the US contains triclosan in the urine and only 10% of them have levels that are high enough to stop the growth of Escherichia coli.

Обратный эффект: противомикробное средство в зубных пастах усиливает опасные бактерии

Combating antibiotic resistance

“Our data indicate an unexpected and certainly unintended consequence of adding high concentrations of antimicrobials in consumer products, Reaffirming the urgent need to reassess the costs and benefits associated with prophylactic use of triclosan,” said study author Peter Levine.

Recall that in Irish soils found unknown bacterial strain that is effective against four of the six main superbugs, resistant to antibiotics.

As reported by the portal “Znayu” scientists have created a single new vaccine against anthrax and pneumonic plague.

Also “Znayu” I wrote that the team from the Medical school at case Western reserve University have discovered a new way to treat sepsis.

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