Resistance gene helps C. difficile spores survive hospital-grade disinfectants
Antibiotic resistance is supercharging dangerous gut bacteria to withstand even hospital-grade disinfectants intended to kill them.
Clostridioides difficile, a dangerous gut bacterium, has acquired a resistance gene that enables its spores to withstand hospital-grade disinfectants and antibiotics. This discovery, made by researchers at Monash University and published in Nature Communications, highlights the rapid evolution of antibiotic resistance in bacteria.
The bacterium's dormant spores, akin to plant seeds, remain dormant until activated in the right environment, such as the human gut. This development poses a significant threat in hospitals, where Clostridioides difficile commonly resides and can cause severe diarrhea leading to fatal outcomes for patients already ill. Lead researcher Dena Lyras emphasized the urgency of the situation, stating that antibiotics are driving bacteria to evolve in unexpected ways, potentially leading to disastrous consequences for human health.
The new research reveals that when Clostridioides difficile acquires this resistance gene, the antibiotic block no longer functions. Instead, the bacterium produces tougher spores that can endure hospital-grade cleaning products and high laundry temperatures, making infection control more challenging. The antibiotic resistance gene produces a protein that replaces a crucial spore-building protein, allowing the bacterium to continue creating spores.
Detecting and targeting these spores could be a key to combating this emergent form of antibiotic resistance.
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