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Science News

HIV Vaccine 848

The Sexecutioner writes "WebMD is reporting on a new vaccine which has had an incredible effect in clinical trials. The vaccine, composed of human dendrites holding dead HIV viruses, has dropped test patients' viral load by up to 90% in one year. Could this be it?"
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HIV Vaccine

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  • hold on there (Score:1, Interesting)

    by museumpeace ( 735109 ) on Wednesday December 01, 2004 @07:22PM (#10968573) Journal
    dendrites are whole-tissue from the CNS...the best way on earth to pass on prion diseases. No Way is this going to become a vaccine until that little fear is put to rest!
  • Well... (Score:3, Interesting)

    by Blue-Footed Boobie ( 799209 ) on Wednesday December 01, 2004 @07:22PM (#10968580)
    I would think it might be a tad premature to be asking "Could this be it?".

    It would be nice though.

  • Cost (Score:2, Interesting)

    by agarrett ( 803743 ) on Wednesday December 01, 2004 @07:23PM (#10968605) Homepage
    I sincerely hope this is it.
    If it is, my only apprehension is that countries who need it most will not be able to afford it.
  • What's a dead virus? (Score:4, Interesting)

    by alehmann ( 50545 ) on Wednesday December 01, 2004 @07:24PM (#10968609) Homepage
    I always hear about vaccines involving "dead" virus material. But I thought viruses weren't alive in the first place; that they were essentially protien envelopes containing viral DNA or RNA. Can anyone explain?
  • I hope so.. (Score:1, Interesting)

    by Anonymous Coward on Wednesday December 01, 2004 @07:25PM (#10968621)
    I really hope we're making progress on this, this virus is really killing a lot of people.. I also would love for some of these bigger viruses to be sorted with, then perhaps we can start working on the smaller, non-life threatening type viruses that we "live with" because they're not considered too threatening.

    What I do fear though, is if we have a 'cure' then the fear of catching a deadly STD starts to fade away, even though there are other serious STD's out there still.

    I remember being very afraid after waking up the next day.. then on I've been very careful and have been tested.. Simply don't want to trash more lives then my own if I did do something stupid.
  • Re:FDA approval? (Score:3, Interesting)

    by FuzzzyLogik ( 592766 ) on Wednesday December 01, 2004 @07:25PM (#10968627) Homepage
    LOL... look at the FDA's wonderful load of crap lately.. how many drugs have been pulled that the FDA said was ok? give me a break... the FDA in my opinion has turned into a load of shit...

    and to add to that look how the government was trying to stop people from getting their drugs from canada.. and yet when the flu vaccine had a shortage here who did they get more vaccine from? oh yes. canada.. who's drugs you can't trust...
  • On a related matter. (Score:3, Interesting)

    by killjoe ( 766577 ) on Wednesday December 01, 2004 @07:26PM (#10968633)
    I just read this.

    Apparently Brazil is ready to go ahead and break the patent of several drug companies because they can't afford to pay for them.

    New drugs are great but only if you can afford to take them.
  • Re:Mixed feeling (Score:3, Interesting)

    by DAldredge ( 2353 ) <SlashdotEmail@GMail.Com> on Wednesday December 01, 2004 @07:53PM (#10968945) Journal
    Don't forget the Billions the drug corps spend on Ads in the US. Most countries do not allow such advertizing and someone has to pay for it.
  • Re:Mixed feeling (Score:5, Interesting)

    by fupeg ( 653970 ) on Wednesday December 01, 2004 @07:58PM (#10969000)
    Simple: the prices in Canada are negotiated by customers who have the time to study the actual costs of production, and who aren't desperately begging for the treatment right now.
    This is so completely false that it is not even funny. First off, price ceilings are affected in Canada by its Patented Medicine Prices Review Board. Second, drug distribution is controled by the provinces through each province's list of approved drugs, known as the provincial formulary. If you're not on the formulary, chances are you're not going to be sold in that province. The provicne then negotiates the prices of drugs on the formulary. This has allowed Ontario to freeze the prices on all formulary drugs since 1994. Customers do not negotiate the prices, the government does.

    However, the biggest reason drugs are cheaper in Canada is because per capita income is about 20-30% lower in Canada than in the US and there are drug trade barriers between the two markets. If there were no barriers, then the prices would equalize across markets since one could buy a drug in Canada and sell it in the US. But with barriers, drug companies can easily set different prices in different markets, charging their richer customers (US) more than the poorer ones (Canada.) This is a classic monopolist tactic known as differential pricing. Ultimately it is the lower income caused by socialism in Canada and free trade barriers between the countries that cause such a large price disparity.
  • by PaulBu ( 473180 ) on Wednesday December 01, 2004 @08:03PM (#10969050) Homepage
    ... now all you need is a "machine" to combine them! Think about the possibility of a drug which, after injected, ties itself to the dendritic cells and starts hunting in your blood for dead viruses, then replaces itself with the dead virus body -- hey, you've just produced a vaccine!

    The bottom line is that now that the positive effect is demonstrated, the next step is to find out the cost-effective way to combine cells and dead viruses, preferrably in-viro. Let's hope that someone will manage to do it!

    Paul B.
  • Re:I Hope not. (Score:3, Interesting)

    by SpecBear ( 769433 ) on Wednesday December 01, 2004 @08:03PM (#10969051)
    Yes, it's a horrible thing to say. And I find it interesting that I've repeatedly heard people praise the population control potential of AIDS, but never the various strains of flu, or other diseases. Read into that what you will.
  • Re:Mixed feeling (Score:3, Interesting)

    by Cecil ( 37810 ) on Wednesday December 01, 2004 @08:08PM (#10969083) Homepage
    Please shut your mouth if you don't know what you're talking about.

    The cost is not directly subsidised by any tax dollars, sorry. No, just because we have socialized health care does not mean drugs do not have a price, it's just that most of that price is paid by the government for us. The drugs are still cheaper. There are several reasons why, and I've seen some of them discussed in this thread already.

    But government subsidy simply is not one of the reasons.
  • by Henry V .009 ( 518000 ) on Wednesday December 01, 2004 @08:23PM (#10969259) Journal
    In Africa AIDS is epidemic in the heterosexual population. It is like this no where else in the world. A possible cause is African sexual practices which include more partners in general (I consider this theory to be unlikely), and another cause is less sanitary conditions and more disease (open sores and such) which make sexually contracted AIDS far more likely. It could also be genetic suceptibility or even different AIDS varients in Africa, but there seems to be no evidence for this.

    Nowhere else in the world except Africa do you have a significant chance of contracting AIDS through heterosexual sex. Figure out why this is, and you'll win a Nobel.
  • Re:Mixed feeling (Score:3, Interesting)

    by WhiteWolf666 ( 145211 ) <sherwinNO@SPAMamiran.us> on Wednesday December 01, 2004 @08:41PM (#10969440) Homepage Journal
    We have this in the U.S. too. This is how health insurance companies can afford to provide such cheap drug benefit plans (if your lucky enough to have insurance).

    During the times in my life when I've had benefits (now is one of them, thank god), i've been amazed at the huge difference in cost for drugs. I can understand that doctors cost money, and without benefits, I'll pay them upwards of $100 a visit. I think it's bonkers that with insurance, I pay ~$15 a prescription, and without, I can pay $200+.

    Somewhere, Somehow, I believe there is a legal/market structure that causes non-insured people to subsidize insured drug purchases, and I find that abhorrent.

    It's fine that my benefit payments go towards reducing my drug costs. It's not fine that the average non-insured sap out there is making my drugs cheaper. That needs to be fixed (even if it makes my drugs more expensive).

    Non-insured people might have to pay more than insured people. This should have to do with the insurance covering my payements, not with some fancy-shmancy rebate structure where a portion of the pre-insurance costs of my drugs get refunded to big pharma.

    Mind you, this doesn't mean that I'll turn down my health insurance. I'm not sure if that make me a hypocrit, but I'm simply not willing to be sick, and I couldn't afford treatement (when I need it) otherwise.

    BTW: I agree, Canadian drugs are perfectly safe. Also, I'm not sure we need a socialist health system in the U.S., but us Americans do need to take a good, hard look at the laws/regulations that allow the insurers/big pharma to operate the way that they do.
    If we decide that the regulatory system is simply unsalvigable, then maybe we need national healthcare. But so far, no one has even been willing to address all the red-tape, all of the monopolies and other crap that we assign to big pharma. Here we are, talking about universal health care (in national politics, I don't mean /.), but no one has even considered dropping or removing patent protection for drug manufactures. Imagine, if that had to capitalize on their invention in 1 year, and after that, it became legal to produce generically, and no amount of reformulation could make it become patented again.

    I think that could make a serious difference. Add some tort reform, and the whole health care industry changes.
  • by Henry V .009 ( 518000 ) on Wednesday December 01, 2004 @08:46PM (#10969494) Journal
    If you did know the stats, you could have avoided the ignorance posted above. If homosexual, you are orders of magnitude more likely to get AIDS at the same level of promiscuity as a heterosexual. If heterosexual, it's the figure is so small that it's nearly zero at whatever level of promisucity you can manage. There are plenty of STDs that heterosexuals should worry about. AIDS isn't one of them (outside Africa).
  • Re:FDA approval? (Score:5, Interesting)

    by sugar and acid ( 88555 ) on Wednesday December 01, 2004 @08:55PM (#10969572)
    Well the real cause for concern with the latest scandal with drugs and the FDA is a fundamental problem of pharmaceutical companies continually trying to reinvent the wheel by making new drugs to treat highly common cronic diseases with treatments that are just as effective already ( eg long term prevention of heart disease, athritis, obesity, depression, sleeping disorders), with often a "me to" approach of producing new drugs that work similary to drugs from another company (notice the explosion in erectile disfunction drugs after the introduction of viagra.

    In the case of vioxx, the treatment was designed for anti-inflammatory pain relief in arthritis, by inhibiting an enzyme COX2. It is about as effective as another drug many of us have taken ibuprofen (Advil) for this purpose but instead of being 3-5 bucks for a bottle of 50 to 100 pills, it was sold at ~$2 a pill (it is also how aspirin works to relieve pain as, thus the running joke that the pharmaceutical companies had invented the $2 apirin).

    So what was so much better about vioxx that it was developed, FDA approved and prescribed by doctors.

    Well it doesn't inhibit another enzyme COX1, like aspirin and ibuprofen do. Inhibiting Cox1 has several effects, the two most important are: the negative effect, gastrointestinal problems like stomach bleeding and ulcers; but it also has a positive effect which is prevention of blood platelet aggregation which prevents blood clots, heart attacks and strokes. This is why aspirin is taken to prevent heart attack, if you take aspirin to prevent heart disease and a specific COX2 inhibitor for arthritis like vioxx together you are really losing the benefit vioxx had over ibuprofen.

    Anyway not everyone has a sensitivity to asprin and Ibuprofen, there are estimate that only 8% of those prescribed Vioxx actually got a benefit over cheaper alternatives, but vioxx had a great ad campaign that convinced everybody that they should "ask" (read demand) their doctor to prescribe it, even though it is vastly more expensive. Also the FDA approval could be pushed through because of the "benefit" to those 8% of patients that had gastrointestinal sensitivity to aspirin and ibuprofen.

    So what have they found out now- well just inhibiting COX2 by itself actually causes increased blood platelet aggregation and increased risk of heart disease and stroke, this effect is balanced out by the inhibition of COX1 in aspirin and ibuprofen etc. that prevents platelet aggregation.

    Now the real issue, Vioxx was pushed out to compete with very cheap, safe and well charactised drugs (so we know all the side effects etc., why do you think you can buy them at the supermarket) due to a very long history of use. Patent it and get it approved for use by the FDA targeting it to one small specific group that have a problem with current treatments to help push the approval through. Once it is approved marketing it to a much wider group of people that are not the specific target group, and will not gain any benefit over a cheaper, better characterised and now known to be safer alternative. To compound the problem the TV advertising of prescription drugs now almost approaching saturation increases this problem by getting the public to demand drugs they don't need.

  • by pclminion ( 145572 ) on Wednesday December 01, 2004 @09:05PM (#10969657)
    It doesn't stop HIV infections, but it prevents them into evolving into full-blown AIDS

    The study only lasted one year. That's not enough time to really say whether it will prevent AIDS symptoms. They could, in theory, get sick next year, or next week.

    reduces the risk of infection

    No it doesn't, since the vaccine must be manufactured from a victim's own blood, and HIV virus from their own blood. The way I'm reading the article, it seems the vaccine is made on a person-by-person basis and can't be used on people who aren't already infected.

  • by rewt66 ( 738525 ) on Wednesday December 01, 2004 @09:21PM (#10969843)
    Figure out that the heterosexual spread of AIDS is rapidly becoming true in the rest of the world, and you'll live longer...

    Seriously, read the news articles that are coming out today. The spread of AIDS in the heterosexual population is not just an African thing. It may be more advanced in Africa, but it's coming to the rest of the world.
  • Re:Wait, a vaccine? (Score:2, Interesting)

    by kbnielsen ( 835429 ) on Wednesday December 01, 2004 @09:30PM (#10969947)
    Actually, one of the problems is the Catholic Church. The Catholic Church is a very dominant religion in Africa, especially in the middle and the south of the continent. But many catholic priests spread the message, that using condoms can give you HIV/AIDS, and that HIV virus can penetrate through a condom, which has been proven false several times.

    As many people in Africa aren't very educated and many are very religious, the priests become the most reliable source of information. That is, the church says that you can get get HIV by using condoms, therefore we will not use condoms. The catholic church also promotes monogamy and no-sex-befor-marriage, but that message seems to get lost somewhere... The church's opinion on condoms is backed all the way to the top in the Vatican, and even though their claims of virus slipping through condoms, they continue to spread that message.

    In my opinion, the catholic church has a very big part in the HIV/AIDS catastrophe happening before our eyes on the African continent, and I'm actually inclined to consider everyone who spreads misleading facts about prevention as accomplicits to murder.

    So when everybody talks about the lack of education on these issues, please don't forget that some africans also get educated wrongly.

    Just my 25c
  • Re:Mixed feeling (Score:4, Interesting)

    by ScrewMaster ( 602015 ) on Wednesday December 01, 2004 @10:10PM (#10970255)
    Well ... as currently operated I would say they are very similar to a seriously malfunctioning socialism. You do understand that I was talking about an ideal insurance company, or should I say, the principle of insurance. Insurance companies in the United States today have more in common with organized crime syndicates than they do with socialism. So while I'm pretty much a dyed-in-the-wool capitalist I wasn't actually making a negative comment about socialism.

    But you're right about the odds. The only organizations that invest more in actuaries and statistical monitoring of their clientele than casinos are the insurance companies. Incredible, really. And, I guess, successful: the amount of money these companies rake in is truly phenomenal, and as health care delivery gets poorer and poorer they take in more and more.

    Some years ago my girlfriend's father had to go in to the hospital for an MRI. No big deal, in and of itself, but after he was released and his wife was reviewing the hospital bills, she noticed that the insurance company was being billed for not one, but TWO MRI's, at the same time on the same day! Sure, it wasn't their money, exactly, but it did count against their liftime cap. And besides ... it was wrong. She immediately called the insurance company's hotline to point this out. The answer was, "Well, we pretty much have to go with what the hospital tells us" and by God they paid it! I've had a number of similar experiences: these people just don't seem to care about overbilling and so forth. That leads me to believe one or both of two things. A. that they are so flush with money that they simply don't care or B. there's some conflict of interest going on between the management of the hospitals and that of the insurance companies.

    My own father, some years ago, was in the hospital after a minor heart attack. He was only there for two days, and had some minor tests done (EKG, etc.) and a couple of X-rays and the rest was just for observation. The resulting bill was over thirty - thousand - dollars. The list of charges was almost an inch thick! Well, we decided to fight that one, and camped out in the outer office of the hospital's accounting department. After several hours going up the chain of command, we got to speak with a very, very nice woman who was the chief accountant. We explained that were disputing, well, pretty much almost all of the charges. She said, well, let's see what we can do. She went down the list, item by item, and asked "Did you see this doctor?" "No." "Did you have this test?" "No." It was MIND BOGGLING how many people and companies got some juice money stuck on his bill. By the time we were done it was less than five grand. An afternoon well spent, I'd say. But you can see why I have very little patience with the entire industry.
  • Re:Forget about it (Score:1, Interesting)

    by Anonymous Coward on Wednesday December 01, 2004 @10:25PM (#10970371)
    There is a presently FDA approved therapy (photopheresis or ECP) for a kind of T cell related lymphoma (CTCL). White cells are isolated from whole blood including dendritic T cells and they are given a psoralen compound and UV light is then used to stimulate a modification of the immune response. These modified or stimulated cells are all given back to the patient and some of the cells die which may be part of the mechanism of action. There was speculation that this was a kind of immunization effect (article in Scientic American 1988).

    There was a small study of 5 HIV patients done in the early 90's and published in JAMA I believe. Study showed significant drop in viral load but not complete clearing which seems similar to this vacine report. There are currently some independent studies either in progress or in discussion to continue some of this work.

    This therapy is believed to down regulate the immune response among other things which would seem at odds with any benefit we might expect given our prevailing understanding of HIV.

    The interesting thing is that this therapy takes about 3 hours begining to end and is already available in many university hospitals. It is a newish therapy and just now begining to get a hard look as the mechanism of action is finally being better understood.

    This therapy is a kind of individual cellular therapy where the patient's blood is treated directly without ever taking cells to a laboratory. It is all online while the patient is connected to the instrument. The safety profile is good and the side effects mild.

    It will be interesting if the vaccine and photopheresis work in similar fashion. Perhaps someone will do a comparison and start some interesting thinking.
  • by grcumb ( 781340 ) on Thursday December 02, 2004 @12:15AM (#10971159) Homepage Journal

    "The problem is getting the third world (where the epidemic is most serious) to accept western medicine."

    I won't argue your central point, that people from under-developed nations often don't trust western medicine. You have to remember, though, that this judgement is largely based on experience. Hospitals in many parts of the world are where you go to die.

    Health care is so thin on the ground in most nations that hospitals simply cannot afford provide the kind of care that North Americans take for granted. Staff are under-trained and over-worked, materials are antiquated or absent, and as a result, treatment is often poor.

    This is of personal interest to me, as I'm currently working in a developing nation. I've seen the son of a close friend crippled because of a little scratch that got infected; I've seen the child of a friend of mine die because a boil in his nose went septic. I've been to the hospital myself, and I can testify that it this was my only experience with western medicine, I wouldn't have any faith in it either.

    A vaccine that can be easily administered in the field would have a huge effect in mitigating the damage being done by HIV/AIDS. It is not, however, a solution. Public education and lifestyle changes are also essential. Long-term, they're more important because prevention doesn't cost nearly as much as treatment. The nations most afflicted by HIV/AIDS are those who can least afford to fight it.

  • by 0111 1110 ( 518466 ) on Thursday December 02, 2004 @01:03AM (#10971503)
    It is like this no where else in the world.

    That is completely false.

    and another cause is less sanitary conditions and more disease (open sores and such)

    "open sores"? You must be joking.

    Nowhere else in the world except Africa do you have a significant chance of contracting AIDS through heterosexual sex.

    You really seem to have this fixed idea that homosexual sex is somehow inherently different and that transmission through "normal" sex is nearly impossible. I am wondering where you got this idea. It is completely false and dangerous. I also can't help wondering whether you are over the age of 12.

    The only difference with Central African HIV is that it is so common. It has reached truly epidemic map-clearing proportions. Ignorance and superstition definitely seem to play a part in this (ie. the virgin cure, lack of condom use, distrust in the "germ theory" as the cause of AIDS).

    The bottom line is HIV is easily transmittable through heterosexual sex. The fact that it is even more easily transmittable through sodomy is actually not all that important. Either way, if you are having sex with an HIV infected partner your chances of acquiring it from even a single encounter are quite high.
  • by Drakonian ( 518722 ) on Thursday December 02, 2004 @01:09AM (#10971549) Homepage
    Huh? What about the lack of education? I seem to recall SA had high ranking officials publicly denying that HIV leads to AIDS. There is widespread misunderstanding (and misinformation).
  • Re:Mixed feeling (Score:2, Interesting)

    by anakin876 ( 612770 ) <anakin876@CHEETAHhotmail.com minus cat> on Thursday December 02, 2004 @02:16AM (#10971888)
    by allowing them to live longer more productive lives how likely is it that they will infect more people than they would otherwise?
  • by dreadknought ( 324674 ) on Thursday December 02, 2004 @02:38AM (#10971965)
    Where's the control group? Where's the diversity? For this to be a properly conducted experiment, there should be hundreds of people, not 18. There should be an even distribution of gender, ethnicity, age, etc.

    There should be groups who are infected with HIV who get the treatment,
    groups who are infected with HIV who don't get the treatment,
    groups who are not infected with HIV who get the treatment,
    groups who are not infected with HIV who don't get the treatment,
    groups who are infected with HIV who think they get the treatment but actually don't (placebo),
    and groups who aren't infected with HIV who think they get the treatment but actually don't.

    I'm sure I'm missing a few more groups, but the point remains that this is hardly conclusive, or even an acceptable test.
  • by The Cydonian ( 603441 ) on Thursday December 02, 2004 @04:16AM (#10972281) Homepage Journal
    The fact is, HIV [sic] is the most daunting disease we have ever faced.
    While I don't intend to convert this into a my-disease-is-more-dangerous-than-yours competition :-), I don't think you've been in any affected region during last year's SARS crisis. I was, and boy was it scary; streets once lively even at 3AM, turned ghostly.

    Which, of course, is not to deny that AIDS is daunting.

    If it had hit even 50 years earlier we may very well have faced an epidemic on the order of the Black Death.
    One rather interesting point raised by a recent book I read, I forget if it was The Tipping Point [gladwell.com] or Linked [human-nature.com], was that we probably had the virus with us in benign forms even in the 50's. The difference was that the HIV possibly underwent a mutation somewhere in the mid-70's / early-80's to become the virulent organism that it is today.
  • by Myolp ( 525784 ) on Thursday December 02, 2004 @04:40AM (#10972330)
    The problem is the patents. I.m.o. patents should never apply to crucial discoveries within medicine, energy and other techonologies important for our daily life. However, companies must be encouraged to invest in R&D, but this could be done in other ways that doesn't prevent competing companies from selling the same drugs and thus pushing the prices.
  • by mikechant ( 729173 ) on Thursday December 02, 2004 @07:06AM (#10972770)
    The number 1 reason Canada's medicines are cheaper is because of our government or healthcare system. The Canadian government buys them in bulk and controls prices.

    Exactly the same in the UK. The NHS negotiates (note *negotiates* - the drug companies are not forced by law to participate) massive discounts this way based on a modest but reasonable profit for the drug companies. This saves us *billions* as a country. The drug companies charge whatever 'local conditions' allow and the US system allows them to charge just about what they like.

    Question: Would it be illegal (competition law etc.) in some way for all US health insurance companies to get together and negotitate bulk discounts in a similar way? If not, why don't they do this?
  • by peter303 ( 12292 ) on Thursday December 02, 2004 @10:57AM (#10974093)
    In the early 80s cats were dying off from an immune system destroying virus too. Yetr medicine was lucky enough discover a vaccine quickly. Its a routine pet service now. This encouraged early predictions of a quick vaccine for the human version. But no such luck.

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