Slashdot Mirror


Alzheimer's Plaques Imaged in Living Brains

Yves writes "Japanese scientists have developed a technique to detect traces of Alzheimer's disease (amyloid plaques in the brain) on living mice... Until now, the standard way to confirm the presence of the plaques, and thus the disease, was by autopsy. The question remains: Do you really want to know early that you have Alzheimer disease, as there is no effective treatment yet?"

21 of 61 comments (clear)

  1. Personally by KinkifyTheNation · · Score: 3, Insightful

    I've thought about this before, and I don't think I could ever live knowing that all of my memories are going to go down the drain and not even realize it. I would probably go crazy at the thought and kill myself before it happened.

  2. Want to know? by dn15 · · Score: 4, Insightful
    The question remains: Do you really want to know early that you have Alzheimer disease, as there is no effective treatment yet?
    Interesting question. I doubt I'd really want to know, as much as it may sound like sticking my head in the sand. What good can it do for one's quality of life to spend their days worrying about a disease, if nothing can be done about it anyway? Maybe it would be good to be able to put your affairs in order, but besides that probably not.
    1. Re:Want to know? by Ayaress · · Score: 4, Interesting

      The article's got a slight innaccuracy. There are effective treatments, just no cure. However, some of the treatments are excellent, and can delay the onset of the disease and substantially slow it once it does show up. My great-grandmother was diagnosed with the disease seven years ago, but is still living a perfectly normal life for somebody her age. She worries far more about high blood pressure than Alzheimers.

    2. Re:Want to know? by Curtman · · Score: 4, Insightful

      It would probably be better information for the families, than for the individuals. You'd probably make better plans if you knew you were going to have to care for Grandpa as an alzheimer victim.

    3. Re:Want to know? by poopdeville · · Score: 2, Informative

      She worries far more about high blood pressure than Alzheimers.

      I know what you meant, but you should tighten up your semantics before some insensitive clod mentions that this isn't necessarily a good thing.

      --
      After all, I am strangely colored.
    4. Re:Want to know? by sakusha · · Score: 3, Interesting

      The bigger question is, do you want your insurance company to know early if you have Alzheimer's? Because they WILL know if you get tested. Forget about ever getting health insurance again if you switch jobs.

    5. Re:Want to know? by famebait · · Score: 2, Insightful

      Or move to a civilised country that actually manages to recognise the well-being of its citizens as a higher priority than the "right to not have health coverage".

      --
      sudo ergo sum
    6. Re:Want to know? by Murphy+Murph · · Score: 3, Interesting
      The bigger question is, do you want your insurance company to know early if you have Alzheimer's? Because they WILL know if you get tested. Forget about ever getting health insurance again if you switch jobs.

      My Primary Care Physician has offered many tests to me "under the table" for that very reason.
      --
      I dub thee... Sir Phobos, Knight of Mars, Beater of Ass.
    7. Re:Want to know? by orangesquid · · Score: 4, Interesting

      Hell yes I'd like to know. It'd be the perfect time to write memoirs; to recount over my life, make sure I've told the stories I want to tell, and get ready to just have fun for the rest of my life.

      Even if I lose the memories inside my head, I'll have them recorded, so they won't be gone.

      It's like knowing when you're going to die, except, it's knowing when a certain part of you is going to die.

      --
      --TheOrangeSquid Is it any wonder things seem so awry? We swim in a sea of confusion and don't have to think to survive
    8. Re:Want to know? by bluenawab · · Score: 3, Insightful

      I think the importance of this breakthrough lies not in the knowledge that the patient gains, but the usefulness of this information to researchers. By diagnosing and studying the animals with alzheimers syndrome, researchers will have a clearer idea of the usefulness of various treatments.

    9. Re:Want to know? by russellh · · Score: 3, Insightful

      My Primary Care Physician has offered many tests to me "under the table" for that very reason.

      Isn't it great when you have to sneak around the healthcare system to feel safe.

      --
      must... stay... awake...
    10. Re:Want to know? by Anonymous Coward · · Score: 2, Insightful

      Why not do those things _right now_?

  3. Hell yeah by Captain+Splendid · · Score: 3, Funny
    The question remains: Do you really want to know early that you have Alzheimer disease, as there is no effective treatment yet?

    Why not? I'll forget it pretty soon anyway!

    --
    Linux, you magnificent bastard, I read the fucking manual!
  4. No effective treatment?? by DaoudaW · · Score: 5, Informative

    Perhaps you meant to say no cure, but there are several effective treatments. My father-in-law was diagnosed with Alzheimer's about 5 years ago. The progress of the disease has been significantly curtailed by medication. It has also been shown that higher level thinking/learning has a significant protective effect from the symptoms of Alzheimer's. Yes, I would want to be tested specifically because there are currently effective medications and therapy which prolong quality of life.

    1. Re:No effective treatment?? by Ayaress · · Score: 3, Informative

      Even before they had effective medications, it was better to know ahead. They determined a long time ago that people who kept an active mind tended to delay the onset of Alzheimer's symptoms. Even so much as doing the daily crossword puzzels in the newspaper and staying active is supposed to help. Beyond that, there have been therapies and even simple lifestyle changes available for a while that can be made to make dealing with symptoms easier if and when they do develop, and as a last resort, most visiting physician services have Alzheimer's specialists who can help.

    2. Re:No effective treatment?? by FleaPlus · · Score: 4, Informative

      There was actually an article on this a few days ago.

      Original research paper in Cell: Environmental Enrichment Reduces Alpha-Beta Levels and Amyloid Deposition in Transgenic Mice
      Summary in Cell: Exercise Your Amyloid

      Article in Medical News Today

      Quote: Mice that keep their brains and bodies busy in an "enriched" environment of chew toys, running wheels, and tunnels have lower levels of the peptides and brain plaques associated with Alzheimer's disease compared to mice raised in more sparse conditions, according to a new study in the 11 March issue of the journal Cell.

      Levels of b-amyloid peptides, which clump together to form the brain "tangles" or plaques that are toxic to nerve cells in Alzheimer's disease, were significantly lower in the enriched mice, say Sangram Sisodia, of the University of Chicago, and colleagues. The enriched mice may have been better equipped than their less-stimulated counterparts to sweep these peptides out of the brain, according to the researchers' analysis of gene and enzyme expression in the animals.

      "This goes back to the old idea of use it or lose it, that using your brain keeps it more active," Sisodia says. "It's more common sense than anything, but what we didn't previously appreciate is that it might affect the pathology that is characteristic of Alzheimer's disease." ...

      The researchers also found intriguing clues that an active body, as well as an active brain, might be a key factor in reaping the benefits of an enriched environment. The most physically active of the mice in the elaborately furnished cages had the most dramatic reductions in amyloid peptides and deposits. At least among this small group of mouse workout devotees, "exercise appears to play a significant role in modulating amyloid deposition," Sisodia and colleagues write.

      The researchers caution, however, that it will take more experiments with larger numbers of animals to determine exactly how enriched environments benefit mice, whether through increased physical activity, a boost in visual, social, and spatial stimuli that awaken the brain, or some combination of all of these factors.

      Sisodia says exercise, along with any kind of mental activity from reading to doing the crossword puzzle, are probably the equivalent of chew toys and running wheels for humans. "It's all very important in keeping the mind active and potentially staving off effects of old age."

  5. Yes, and a joke to ensure me going to Hell by sithkhan · · Score: 3, Funny

    Yes, I would like to know, if nothing more than being in control of things before it becomes a problem. I could update my living will, make my wishes known to my family and loved ones, and ... what was I saying?


    An older couple began to notice that they were forgetting things, so they decided to take a memory course together. They took the course and were simply thrilled with the results. One day while shopping in a local store, they met a friend. "Bill, you just have to take this memory course. It's fantastic ! It's changed our lives," the husband said. "Wow, that's great ! What's the name of the course?" The husband turned to his wife and asked, "Honey, what's the name of that flower with the long stem and thorns?" "You mean a rose?" she replied. "Yes, that's right." (PAUSE) "Rose, what's the name of that memory course we took?"

    --

    is it that bad seein a hot chick again? if i see a hot chick walkin down the hall i dont say "repost"
  6. Re:Phosphatidylcholine by infonography · · Score: 3, Interesting
    Not quite clear, Phosphatidylcholine is a purified extract from lecithin http://nootropics.com/lecithin/

    "The only statistically significant result was in favour of placebo for adverse events, based on one trial, which appears likely to be a spurious result. "

    However, other results were;

    "Alzheimer's disease sufferers have been found to have a lack of the enzyme responsible for converting choline into acetylcholine within the brain. Lecithin is a major dietary source of choline, so extra consumption may reduce the progression of dementia."

    "The Cochrane Dementia and Cognitive Improvement Group's Specialized Register was searched on 15 May 2002 using the terms lecithin and phosphaditylcholine."

    --
    Sorry about the writing. Robot fingers, you know? Cliff Steele in DOOM PATROL #23
  7. that's not the only issue by edward.virtually@pob · · Score: 2, Insightful

    a more disturbing aspect of this is the possibility of employers and insurers discriminating against people based on the test.

  8. Not a case of "want to know or not" by GoRK · · Score: 3, Insightful

    What a ridiculous question! If doctors simply never told anyone about a problem if it was currently "incurable," what kind of medical advancements could anyone ever make?

    -- Being able to positively identify the plaques while a person is alive is instrumental to being able to determine the effectiveness of any proposed treatment in a timely manner. A patient could have symptoms of Alzheimers and participate in a treatment study -- if the symptoms miraculously dissapear, there would not be any way to positively determine if the treatment itself helped, or even if Alzheimers was the cause of the symptoms in the first place -- at least not until many years later when an autopsy might happen to confirm an earlier diagnosis.

  9. Already done.... by lunadog · · Score: 3, Interesting

    The actual novelty of this story is that the plaques are being imaged with MRI using a probe rather than SPET or PET using a probe. Both SPET and PET imaging of amaloid plaques has been possible for several years...

    Yawn.