Disinfectants promote resistant bacteria



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Disinfectants for bacteria

Irish scientists find another factor in the development of antibiotic resistance in bacteria

Scientists from the Department of Microbiology at the National University of the Republic of Ireland in Galway found in a study that the use of disinfectants on bacteria can affect the Resistance to antibiotics can promote.

The scientists around Dr. Gerard At Fleming investigated the very resistant bacterium Pseudomonas aeruginosa. This is a bacterium that is common in hospitals. It was discovered in 1900 by the German botanist Prof. Walter Migula (1863-1938). It is preferably found in damp areas, such as in bodies of water, but also in our sanitary rooms, in water pipes, on fruit and fruits, in the intestines of healthy people, etc. According to the Hospital Infection Surveillance System (KISS) of the National Reference Center for Surveillance of Nosocomial (from Greek: Nosokomeion = hospital) infections (NRZ), an institution that is responsible for bringing together all information on the control of infectious diseases from all relevant Areas, around 10 percent of all hospital infections in Germany are caused by Pseudomonas aeruginosa. According to a WDR report, around 1.5 million patients are infected with bacteria in German hospitals every year and around 40,000 people die as a result.

Sources of danger In hospitals, dialysis devices, humidifiers, inhalation devices, etc. are of course a source of danger. It was already known that the bacterium is resistant to some disinfectants, but not that the disinfectants contribute to making it resistant to the antibiotics with which it is has not yet had contact if the disinfectant does not kill it. Then the genetic makeup of the bacteria changes in such a way that they become resistant to certain antibiotics.

Demand for more knowledge The scientists working with Fleming exposed Pseudomonas aeruginosa to increasing doses of benzalkonium chloride. This is an ammonium compound that is often found in disinfectants (e.g. in Sagrotan), but also in eye and nose drops and, more recently, in our clothing and is able to fight fungi, bacteria, algae, some due to its preserving and disinfecting effect Viruses, etc. proceed. If the bacteria were not completely killed and then exposed to the antibiotic ciprofloxacin, they were resistant to the latter. Until now it was assumed that the uninhibited use of antibiotics itself leads to resistance, but Fleming et al have one here in their report, which they published in October 2009 in one of the leading specialist magazines in the microbiological field, the journal “Microbiology” found a new sensational mechanism. They rightly demand that further substances must be examined on this basis, which could lead to a resistance of bacteria to antibiotics, as happened with the bacterium MRSA (multi-resistant Staphylococcus aureus). (Thorsten Fischer, naturopath osteopathy, December 30, 2009)

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Video: 33. Bacteria and Antibiotic Resistance


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