Who says you can't teach an old drug new tricks?
that discovered an antibiotic drug discovered 80 years ago may be able to help fight stubborn and lethal infections. The paper’s authors now hope that the findings can pave the way for pre-clinical trials as a potential treatment for multi-drug resistant pathogens—which infectThe study specifically takes a look at nourseothricin, an antibiotic that’s naturally produced by a soil fungus and contains various forms of the complex molecule streptothricin.
It was initially discovered and isolated in 1942. While it showed promise in curing infections likein mice, it was shown to cause reversible kidney toxicity in limited human trials—and so it was largely abandoned as a drug.“During my research efforts, I serendipitously noticed that nourseothricin was highly active against the most resistant pathogens in our collection including those without really other treatment options,” James Kirby, a pathologist at Harvard Medical School and lead author of the study, told The Daily Beast. “This led us to revisit and learn everything we could about this antibiotic.” Using more modern and advanced drug analysis techniques, they discovered that earlier studies into the antibiotic were flawed. They also found that significantly less toxic versions of streptothricin were still effective against drug-resistant bacteria. The researchers found that one version of the molecule dubbed streptothricin-F was capable of binding to the bacteria and causing it to essentially malfunction. “A major goal of addressing the looming antibiotic resistance threat is to diversify the types of antibiotics we have available in order to stay one step ahead of emerging resistance,” Kirby explained. “So, it was very exciting that we found that streptothricins target the bacterial cell in a new way.” With drug-resistant bacteria on the rise, the discovery couldn’t have possibly have come at a better time. Adiscovered that more people die from antibiotic resistant diseases than HIV/AIDS or malaria worldwide. Spanish researchers have recently found that roughly“Much of modern medicine is based on our ability to treat bacterial infection and we often take this for granted as antibiotics have worked so well for so long,” Kirby said. “Without the availability of antibiotics to prevent or treat infections most surgeries would be life or death propositions or could not be performed at all.” He added that “resistance to currently available antibiotics is rapidly emerging, which threatens all of these medical advances. We are now increasingly in situations where there are no available treatment options for our patients.” And, as we’ve seen from the pandemic, the global health system can easily be caught flat-footed when it comes to hardy pathogens. So it would behoove us all to have as many options to fight these diseases as we possibly can—even if it means revisiting drugs that are as old as our grandparents.
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