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Medicine

The Gene-Edited Pig Heart Given To a Dying Patient Was Infected With a Pig Virus (technologyreview.com) 45

An anonymous reader quotes a report from MIT Technology Review: The pig heart transplanted into an American patient earlier this year in a landmark operation carried a porcine virus that may have derailed the experiment and contributed to his death two months later, say transplant specialists. [...] In a statement released by the university in March, a spokesperson said there was "no obvious cause identified at the time of his death" and that a full report was pending. Now MIT Technology Review has learned that Bennett's heart was affected by porcine cytomegalovirus, a preventable infection that is linked to devastating effects on transplants.

The presence of the pig virus and the desperate efforts to defeat it were described by Griffith during a webinar streamed online by the American Society of Transplantation on April 20. The issue is now a subject of wide discussion among specialists, who think the infection was a potential contributor to Bennett's death and a possible reason why the heart did not last longer. The heart swap in Maryland was a major test of xenotransplantation, the process of moving tissues between species. But because the special pigs raised to provide organs are supposed to be virus-free, it now appears that the experiment was compromised by an unforced error. The biotechnology company that raised and engineered the pigs, Revivicor, declined to comment and has made no public statement about the virus.
"It was surprising. That pig is supposed to be clean of all pig pathogens, and this is a significant one," says Mike Curtis, CEO of eGenesis, a competing company that is also breeding pigs for transplant organs. "Without the virus, would Mr. Bennett have lived? We don't know, but the infection didn't help. It likely contributed to the failure."
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The Gene-Edited Pig Heart Given To a Dying Patient Was Infected With a Pig Virus

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  • by ranton ( 36917 ) on Thursday May 05, 2022 @08:28PM (#62507974)

    With a dozen people dying every day while waiting on a donor list (in the US along), I'm sure the industry could weather hundreds of deaths like this in the pursuit of a working solution. This will save thousands of lives worldwide as soon as they can get it to work consistently.

  • I hope they did not waste the rest of the pig. Gene edited or not, it is still edible, isn't it?

  • I, for one... (Score:2, Insightful)

    ...can't help to NOT feel sorry for this patient, or the team of doctors & researchers who worked on this. Despite giving them kudoz for the medical / scientific advance.

    In the distant past, humans hunted & and ate wild pigs, because they had to for survival. Until killed, those wild pigs could move around freely. Then we moved onto pigs held in captivity, but often with some space to let pigs move around & 'enjoy life as a pig'. Then we moved on to industrial scale, farming pigs as if they'r

    • Re:I, for one... (Score:5, Insightful)

      by Brain-Fu ( 1274756 ) on Thursday May 05, 2022 @11:12PM (#62508214) Homepage Journal

      If yes, please explain why.

      I can give the explanation. But I am neither endorsing it nor rejecting it.

      Yes, most humans believe that they have a right to life which animals do not. They consider animals lesser beings, and as such a resource that can be harvested. Many recognize that animal suffering is real, so they go so far as to require the use of pain killers and compassionate (quick and non-torturous) slaughtering for experimentation and/or food harvesting, but that's pretty much it.

      There is also religious precedent for this, as the great religions that primarily contributed to western culture (Christianity and Judaism) hold doctrinal positions that God set humans above the animals and allowed such use of animals. According to doctrine, humans have souls but animals do not. Done. There are a few specific sects that practice vegetarianism, but they are in the minority. Of course, this religious precedent means little to atheists, but they are still dwelling in the culture that has this ethical framework as its foundation, and are influenced by it.

      Lastly, humans are predators (omnivores, properly, which has always included predation) so it is historically/evolutionarily natural for us to see animals primarily as food (and, by extension, as a means to our ends).

      One last point about medical experimentation: since, according to this ethical framework, animals are resources that are free to be consumed by humans, it would be unethical to abstain from using animals to save human lives. Common ethics don't merely allow the use of animals for medical experimentation, they basically demand it.

      So, that's why.

      Obviously, you hold a different position on this issue. That's fine, I have no incentive to talk you out of it. But there isn't some sort of obvious hypocrisy or logical contradiction here, it's just that the most common set of values held in our culture specifically maintain that animals are resources, not equals.

      • I'm not sure why you started your post with "most humans believe" rather than "the entire animal kingdom works like".

        I have always been a great advocate for getting a hungry lion and letting it lose in the offices of PETA and seeing if the lion will afford the same "think of the animals" mentality towards their human counterparts.

      • You can't eat lettuce without sacrificing a bunch of animals. You may not know that, probably because you've never looked at the lettuce with a microscope. And if there aren't a bunch of little people living there, it's because somebody else already killed them.

        These sort of broad moralisms were an interesting debate 2500 years ago, when Jain and Siddhartha disagreed over action vs intent, but the microscope completely destroys the claim that your actions can be other than to sacrifice creatures for your

      • Very cogent and articulate. And well couched: you are saying what "is," not necessarily what "ought" to be.
    • So do you feel sorry for carnivorous animals when something bad happens to them? I mean, you've seen what they do .. right? Why would you feel empathy for a lion and not a human? The human is not allowed to be instinct driven is that it?

    • Wait, animals living and dying destroys the biosphere? Then how do we still exist after billions of years of animals dying?
  • by Wrath0fb0b ( 302444 ) on Thursday May 05, 2022 @10:42PM (#62508184)

    "Without the virus, would Mr. Bennett have lived? We don't know, but the infection didn't help. It likely contributed to the failure."

    What a completely meaningless statement, in an information theoretical sense.

    It's also true that without the transplant, the patient would probably not have lived very long either.

    • This reminds me of the first clinical use of the red-back spider bite anti-venom in Australia in the 70s. The doctor wrote in the medical report: "It didn't kill him, but it didn't do him any bloody good either".

  • Another piece of the puzzle of how Bill Gates plans to reduce world population to 500,000,000.

  • I've always cringed at the idea of growing human organs in other species as it seems like the perfect incubator for cross species jumps of diseases.
  • Is it a reasonable assumption that a human immune system would struggle to deal with a Xeno-originated virus, and that anti-rejection drugs would make it even worse?

  • But does this sort of thing sound like it has the potential to be the origin of another COVID species crossing/exposure virus to my fellow Slashdotters who know more on the subject?

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