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Medicine

New Antibiotic Can Kill Drug-Resistant Bacteria (theguardian.com) 63

fahrbot-bot shares a report from The Guardian: Scientists have discovered an entirely new class of antibiotic that appears to kill one of three bacteria considered to pose the greatest threat to human health because of their extensive drug-resistance. Zosurabalpin defeated highly drug-resistant strains of Carbapenem-resistant Acinetobacter baumannii (Crab) in mouse models of pneumonia and sepsis, and was being tested in human trials. Crab is classified as a priority 1 critical pathogen by the World Health Organization, alongside two other drug-resistant forms of bacteria -- Pseudomonas aeruginosa and Enterobacteriaceae.

Antibiotic-resistant infections pose an urgent threat to human health -- particularly those caused by a large group of bacteria known as Gram-negative bacteria, which are protected by an outer shell containing a substance called lipopolysaccharide (LPS). "LPS allows bacteria to live in harsh environments, and it also allows them to evade attack by our immune system," said Dr Michael Lobritz, the global head of infectious diseases at Roche Pharma Research and Early Development in Basel Switzerland, which developed the new drug. No new antibiotic for Gram-negative bacteria have been approved in more than 50 years.

Roche had previously identified Zosurabalpin as capable of blocking the growth of A baumannii but it was not clear how it worked, or if it would be effective in animals with Crab-related infections. Through a series of experiments published in Nature, Prof Daniel Kahne at Harvard University in Cambridge, US, and colleagues showed that the drug prevented LPS from being transported to the outer membrane of the bacterium, killing it. They also found that Zosurabalpin considerably reduced levels of bacteria in mice with Crab-induced pneumonia and prevented the death of those with Crab-related sepsis. While [Lobritz] stressed that this molecule alone would not solve the public health threat of antimicrobial resistant infections, the discovery could lay the foundations for future efforts to drug the same transport system in other bacteria.

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New Antibiotic Can Kill Drug-Resistant Bacteria

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  • Best News (Score:5, Insightful)

    by Saffaya ( 702234 ) on Thursday January 04, 2024 @02:08AM (#64129987)

    This is the best news I have heard for a long time.
    Yes, bacteria getting antibiotic resistance is a serious threat and this will save a lot of people.

    • Re:Best News (Score:4, Interesting)

      by VirkGale ( 1388959 ) on Thursday January 04, 2024 @02:18AM (#64130003)
      Until it ends up in animal feed in the USA.
    • Re: (Score:3, Insightful)

      by gweihir ( 88907 )

      Question is just for how long. Greedy and incompetent MDs overprescribe. Greedy farmers feed them to their animals. And hence resistances develop.

      • Re:Best News (Score:5, Interesting)

        by nightflameauto ( 6607976 ) on Thursday January 04, 2024 @09:25AM (#64130829)

        Question is just for how long. Greedy and incompetent MDs overprescribe. Greedy farmers feed them to their animals. And hence resistances develop.

        One of the reasons I'm no longer a farmer is the farm I used to work refused to jump aboard the "antibiotics for no reason" train. You don't do that, you don't compete in the market. Because the antibiotics also tended to be poured into the same feed as the hormonal supplements that promoted over-stimulation of growth. We made a fight of it for a few years, but eventually we couldn't produce enough dairy per cow, nor big enough beef cattle, to compete on the open market.

        While there should have been federally mandated regulations against such practices to keep the food supply healthier, it was pretty difficult to get a bunch of family farmers together with other family farmers to mount a comparable effort against the massive industrialized farms. Especially when most of the family farmers were busy actually farming most of their waking hours and didn't have time to run around behind people's backs paying off senators. Plus, the banks tended to frown on needing a loan for bribery, while they were perfectly happy to give you another loan for a barn or piece of equipment they could foreclose on if you failed to pay it back.

        And yet again, greed won out. I'm gonna say the crazy thing again. Maybe electing the most egotistical greedy pricks to run the country isn't the best way to get a country that doesn't appear to be run by egotistical greedy pricks? Just a thought.

        • You'll be getting the DHS investigating you in 3 ... 2... 1...

          Such blatantly un-American sentiments will get you a nice, dark cell in a SuperMax for the rest of your life. You're a threat to the (checks charge sheet) "egotistical greedy pricks" in charge. Not a very big threat - they'll destroy you pretty quickly - but an intolerable threat.

          • You'll be getting the DHS investigating you in 3 ... 2... 1...

            Such blatantly un-American sentiments will get you a nice, dark cell in a SuperMax for the rest of your life. You're a threat to the (checks charge sheet) "egotistical greedy pricks" in charge. Not a very big threat - they'll destroy you pretty quickly - but an intolerable threat.

            Luckly, I don't own enough to have even registered on the greedy prick's radar. I've ducked 'em for fifty years just be being staunchly middle class. Had I made my statements and had some money behind me, you may have a point.

      • Greedy and incompetent MDs overprescribe.

        I get the incompetent complaint, which can also be chalked up to simply appeasing the patient who *wants* antibiotics even if the MD knows better (and should do better in these cases), but am pretty sure the family physician doesn't make a profit from writing a prescription.

        • Greedy and incompetent MDs overprescribe.

          I get the incompetent complaint, which can also be chalked up to simply appeasing the patient who *wants* antibiotics even if the MD knows better (and should do better in these cases), but am pretty sure the family physician doesn't make a profit from writing a prescription.

          Maybe not directly, but one way a doctor can see more patients is to just prescribe drugs quickly without asking too many questions, running tests, and spending the time to probe for the underlying cause. The money from seeing the additional patients can be substantial.

          • Yeah, it can seem easier to just write a script for bazookacillin and stroll onwards to the next paying patient. But when I piss off patients with needless diarrhea and yeast infections from dumb antibiotics, I don't wind up with happy customers. --JS
      • I'm one of those MD's. Primary care, not greedy, and hopefully not incompetent. There are a lot of forces working to curtail inappropriate antibiotic prescribing. Industrial farming, I can't say. But we're pretty careful with antibiotics. --JS
    • "This is the best news I have heard for a long time."

      Indeed, no more shaving to avoid crabs.

      • by Rei ( 128717 )

        I couldn't help but picture literal crabs as I read this, which made it really hard to get through the summary due to the crazy mental images it invoked. ;) "Crab-related pneumonia", little crabs crawling all around a person's lungs...

    • Re: (Score:2, Insightful)

      by Anonymous Coward

      As the other replies suggest, it is only a matter of time before threats adapt. What I would consider better news isn't some new one-off, but an (existing) permanent solution to the problem, to which threats can not adapt: Targeted Alpha Therapy [youtube.com]. No one seems to care though, at least on slashdot, where the response is always crickets. It mirrors the situation with energy; any low-carbon energy source is fine, as long as it isn't nuclear. Not even to save your life, and certainly not to lift billions out of

    • Yes, very good news indeed, even better it is a new class of antibiotic, so more may come from it. The cnn article has a few more details. https://www.cnn.com/2024/01/03... [cnn.com] Also interesting was more infections are found in the middle east and Asia than the west. The other amazing thing to me is usually drug companies don't research antibiotics much as profit is not that great. Unlike the latest diabetes drugs which are lifetime cash cows, antibiotics get a 2 week regimen and your fixed, so no more income of
  • Sanitorium (Score:5, Insightful)

    by buzz_mccool ( 549976 ) on Thursday January 04, 2024 @02:18AM (#64130001)
    I hope the use of it is confined to in-patient facilities where the entire drug regimen is strictly enforced so we donâ(TM)t have the same antibiotic resistance problem quickly ensue due to patient non-compliance.
    • Re: (Score:3, Insightful)

      by Black Parrot ( 19622 )

      I hope the use of it is confined to in-patient facilities where the entire drug regimen is strictly enforced so we donâ(TM)t have the same antibiotic resistance problem quickly ensue due to patient non-compliance.

      That might cut into someone's profit.

      • Re:Sanitorium (Score:5, Insightful)

        by jacks smirking reven ( 909048 ) on Thursday January 04, 2024 @03:21AM (#64130067)

        That's a sort of uniquely American healthcare thing to worry about though.

        • If there's one thing we've learned from COVID it's that viruses are neither racist nor nationalistic. An American bred superbug isn't going to stay out of Europe because it's scared of socialism.

        • It's not uniquely American at all. If American health policy creates a drug resistant superbug, that's the whole world's problem.

      • No it won't. It is in the company's best interest to preserve the actual value of the product. Right now they have a unique selling point, which they can leverage to increase their sale price. If the bacteria become resistant to this antibiotic as well, then they lose this unique property and they're no more valuable than similar products.

        Plus, you know, the drug company can easily set up these in-patient facilities themselves. It's an extra avenue of profits!

        • AIUA they will want to milk it for all it's worth before their patent expires. After that, anybody's dog can make it and undercut their price.

          I wonder how long it takes for ABR to evolve?

          • I wonder how long it takes for ABR to evolve?

            Antibiotic resistance (to penicillin-class drugs) was reported by the early 1950s. So, not more than about 5 years.

            Since almost all classes of antibiotics are derived from wild organisms (ultimately, after much lab tinkering and investigation ; a human-intended antibiotic candidate that destroys 10% of patient's livers isn't going to get approval - so you need to modify the molecule to reduce that toxicity), then their wild target organisms have already probably some modest degree of resistance. But since

            • Don't be so sure. Although penicillin resistance may have been first reported in the 1950's, Penicillin itself keeps on going strong. It is 100% effective against the #1 cause of neonatal infectious morbidity and mortality, Group B Strep. Plain old Amoxicillin high dose remains highly effective against the most common form of pneumonia, Pneumococcus. So does monotherapy Ceftriaxone for pneumonia, UTI, and gonorrhea. And penicillin remains the best and essentially only treatment for syphilis. It is cor
      • That might cut into someone's profit.

        And this is why we should stop wondering "wut happened" when we pull some inexplicable artifact from the sands of time that would suggest we humans were some kind of highly advanced race thousands of years ago. We were. Then the Disease of Greed came along and damn near wiped us all out. Keep digging. We'll probably find we were stupid enough to do it more than once. Beneath the topsoil lies thousands of years of human ignorance, which is timeless.

        Wanna find the ultimate drug? Find a cure for the Dise

        • by dpilot ( 134227 )

          > Then the Disease of Greed came along and damn near wiped us all out.

          Optimistic, aren't you.

      • by stooo ( 2202012 )

        >> That might cut into someone's profit.
        Only short term.
        On the long term, it's the the exact opposite.

    • by gweihir ( 88907 )

      That would be sane. Or actually make the patient financially liable if they do not take the stuff as long as they need to. In-patient-only punishes everybody and that does not sit right with me. Some people actually can do this right and understand why it is important to not stop as soon as you feel better. Obviously, there are too many clueless nil wits just give these to everybody with no monitoring, but why should that mean everybody suffers?

      • if they do not take the stuff as long as they need to.

        The patient may well recover at a microbe load of 100 microbes/ml of blood. But to avoid the microbe transferring it's resistance genes into wild-type natural relatives at a sufficient rate to avoid the wild population developing significant resistance, you may need to get the patient's load down to 1 microbe/ml of blood.

        Who pays, when the patient does not need the treatment, while wider society does. Particularly if continuing to take the treatment als

    • And forego that sweet, sweet profit?

      What are you, a commie?

    • I don't know the details on this medicine yet. But usually the biggest last-ditch guns for fighting resistant infections are IV-only and restricted for use. That means the big guns we keep in reserve keep working for a long time. --JS

Children begin by loving their parents. After a time they judge them. Rarely, if ever, do they forgive them. - Oscar Wilde

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