Feb 26 • 16:08 UTC 🇧🇷 Brazil G1 (PT)

Bacteria from 5,000-year-old ice samples provide clues for the fight against superbugs

A team of Romanian scientists discovered ancient bacteria from a 5,000-year-old ice core that show resistance to modern antibiotics, raising concerns about antibiotic effectiveness.

A team of Romanian scientists drilled a 25-meter ice core in Scǎrișoara Cave, revealing ancient bacteria that have survived 5,000 years in extreme conditions. The samples exhibited remarkable adaptability, thriving in environments characterized by extreme cold and high salinity, which usually inhibit bacterial growth. These findings offer intriguing insights for the development of new medications by understanding how these ancient microbes have withstood harsh conditions.

More strikingly, the analysis revealed that these ancient bacteria demonstrated resistance to ten modern antibiotics, including potent broad-spectrum treatments such as ciprofloxacin, which are designed to eliminate various bacterial types. This resistance poses significant implications not just for antibiotic treatment protocols, but also raises concerns about the potential for antibiotic resistance in bacteria and how it can be linked to ancient strains. It signals a need for researchers to reevaluate the effectiveness of contemporary antibiotics in treating infections caused by more resilient strains.

The discovery in Scǎrișoara Cave underscores the importance of studying ancient microorganisms to find new avenues for combating modern health challenges. These findings could lead to pioneering treatment strategies and a deeper understanding of microbial evolution in the context of antibiotic resistance, thereby providing vital insights that may help in the ongoing struggle against superbugs, which are increasingly resistant to current antibiotics.

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