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Disinfectant superbugs

- Jan 08, 2018 -

Researchers at the National University of Ireland reported in a new issue of the British Journal of Microbiology that they had added disinfectants to the culture of Pseudomonas aeruginosa during the course of the experiment and increased the dosage of disinfectants. It turns out the bacteria will try to adapt to the disinfectant and survive in this "fight against the enemy." To the surprise of the researchers, Pseudomonas aeruginosa was resistant when they placed Pseudomonas aeruginosa resistant to disinfectants in a clinically common antibiotic called ciprofloxacin. In other words, in the case of no prior contact with antibiotics, Pseudomonas aeruginosa in the disinfectant "training" can produce drug resistance. The researchers say the bacteria themselves can be constantly adapted to the disinfectant environment and become more effective at expelling antimicrobial substances from bacterial cells. Then the genetic material of the bacterium (deoxyribonucleic acid) has changed a certain way, causing it to produce specific resistance to certain antibiotics. Pseudomonas aeruginosa is a common pathogen, and those with weak or immune systems are susceptible to the bacterium, which is one of the most important types of bacterial infection in the hospital. Therefore, the hospital often use disinfectant wipe indoor and medical equipment and other parts of the surface to prevent Pseudomonas aeruginosa infection. The researchers say their findings are important in studying how to control bacterial infections in hospitals more effectively, and also help to understand the environmental impact of bacterial resistance. It is known that the use of disinfectant for a long time, bacteria will produce a certain resistance, must use a higher concentration of disinfectants to achieve antimicrobial or sterilization purposes. A new study by Irish researchers found that disinfectants also "train" bacteria to make them resistant to antibiotic drugs, creating "superbugs".

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