Slashdot Log In
Drugs May Offer AIDS Prevention
Posted by
Zonk
on Tue Mar 28, 2006 07:38 AM
from the here's-hoping dept.
from the here's-hoping dept.
FlipFlopSnowMan writes "There is an interesting article on MSNBC about the possibility of preventing AIDS using the same pills that are currently used to fight the virus in affected individuals." From the article: "The drugs are tenofovir (Viread) and emtricitabine, or FTC (Emtriva), sold in combination as Truvada by Gilead Sciences Inc., a California company best known for inventing Tamiflu, a drug showing promise against bird flu. Unlike vaccines, which work through the immune system -- the very thing HIV destroys -- AIDS drugs simply keep the virus from reproducing. They already are used to prevent infection in health care workers accidentally exposed to HIV, and in babies whose pregnant mothers receive them."
Related Stories
[+]
Possible Breakthrough for AIDS Cure 787 comments
kryonD writes "Researchers believe they have found a new compound that could finally kill the HIV/AIDS virus, not just slow it down as current treatments do. While most of the community is still hesitant to comment on this until it passes peer review, initial results show that their method attacks and kills ALL variations of the virus. A fast track through the FDA could have one of the world's leading problems licked in less than a decade."
[+]
Your Rights Online: AIDS Drug Patent Revoked In US 357 comments
eldavojohn writes "Doctors Without Borders is reporting that four patents for tenofovir disoproxil fumarate, a key AIDS/HIV drug, have been revoked on grounds of prior art. This is potentially good news for India & Brazil who need this drug to be cheap; if the US action leads to the patent being rejected in these countries, competition could drastically lower prices. But the ruling bad news for Gilead Sciences. The company has vowed to appeal. We discussed this drug before."
This discussion has been archived.
No new comments can be posted.
The Fine Print: The following comments are owned by whoever posted them. We are not responsible for them in any way.
Full
Abbreviated
Hidden
Loading... please wait.
Ah, man.. (Score:2, Funny)
Re:Ah, man.. (Score:2)
Have they really tested this drug on THAT many accidentally exposed healthcare workers? Isn't it possible that perhaps the people exposed just didn't get the disease?
Re:Ah, man.. (Score:5, Insightful)
Parent
Re:Ah, man.. (Score:2, Interesting)
Yeah no kidding. Even if you fuck someoone bareback who definitely has AIDS, the odds of transmission are still only like 1 in 10,000.
Have they really tested this drug on THAT many accidentally exposed healthcare workers? Isn't it possible that perhaps the people exposed just didn't get the disease?
No, nitwit. "Accidentally exposed healthcare workers" generally means needle pricks and contact with infected blood. Google "post exposure prophylaxis" [google.com] (PEP) to see what's done now. This treatment would certai
Go for prevention! (Score:2, Insightful)
1- Navigate to the My Video folder.
2- Click on one of your numerous porn clips.
3- Wank!
See folks. Stopping the spread of AIDS is easy...and its on your hands*.
*-Three sessions of thirty seconds per day recommended. Lubricants, may apply.
Re:Ah, man.. (Score:3, Funny)
Yeah, especially since - as we all know - reading slashdot is the favorite pastime of sex workers worldwide.
Quit your worrying... (Score:3, Funny)
Cash cow? (Score:5, Insightful)
A. Obvious - sell it to people who don't have AIDS as well as people who do.
As I understand, these drugs are very expensive, and personally I can't see any justification for using them prophylactically.
Re:Cash cow? (Score:3, Insightful)
Re:Cash cow? (Score:2)
If, for example, you worked with HIV-positive people you couldn't trust or were sexually active within a high-risk group you might have a different opinion. I don't condone visiting prostitutes, but I can see that HIV/AIDS infections among
Re:Cash cow? (Score:2)
I would agree that no one is going to buy these drugs at the retail rate of several hundred dollars/month as a prohylactic thou
Re:Cash cow? (Score:2)
Re:Cash cow? (Score:2, Insightful)
i hope you are only using these as an example, because straight people can get AIDS too ya know, and not just from going to see a prostitute.
of course if someone is having sex with so many different people they fear that they need such a drug, well maybe instead they should think about changing their lifestyle, they might actually be happier
All about the odds (Score:3, Interesting)
Regardless, say 50% of the AIDS cases are in the male gay community. The male gay community is between 1.5% and 3.5% of the US population. That
Err... (Score:2)
Tamiflu the con (Score:2, Informative)
Same hype as with Tamiflu? (Score:3, Insightful)
Now everyone's crazy to get their hands on Tamiflu. Is it me or does it smell like a well placed marketing hype that the media picked up all too eagerly, since there's nothing else going on that would make people buy their news?
Re:Same hype as with Tamiflu? (Score:2)
Incorrect - nearly all of them cleaned up after live or dead birds. The flu virus in birds is secreted out in bird urine/feces and infects by getting back into the respiratory pathways soon after that (both in birds and humans). Birds pecking in "dung" get infected from other birds. People who are cleaning after them (and you have to clean a henhouse quite regularly) get infected as well.
This is
Re:Same hype as with Tamiflu? (Score:2)
No?
Then where's the craze?
My guess is that people go apeshit about it because we all know the "normal" flu, we all have it from time to time, so it's something we relate to something "common", something as ordinary as a common cold.
If it was called a "bird disease" or even "bird killer virus", nobody would bother to listen.
Resistance (Score:2)
Re:Resistance (Score:2, Insightful)
Re:Resistance (Score:2)
You may take this drug, and be able to counter act some strains of the pathogen however if you contract someone else's weakened (but not yet dead) strain, your body could become an incubator for a new strain that tolerates this medication and find yourself infected.
What nobody has mentioned or pointed out, you would have to take these pills for the rest of your life in order for them to be effective. AIDS sleeps mo
Ummm... (Score:4, Insightful)
Re:Ummm... (Score:2)
Vaccine (Score:2)
Re:Vaccine (Score:5, Funny)
Parent
Save the melodramatic crap (Score:5, Informative)
Pandemic? Really? Tuberculosis affects far more people worldwide but doesn't have all the sensationalism that we see surrounding AIDS. I don't mean to imply that nothing is being done about TB, or that AIDS isn't a problem, but I'm tired of the media treating this disease like we're all living on the set of "Rent"
Re:Save the melodramatic crap (Score:3, Insightful)
Re:Save the melodramatic crap (Score:3, Insightful)
In 2002, 3.9 million people died from "lower respiratory infections", 2.8M from HIV, 1.8M from miscellaneous diahrreheal illnesses, 1.6M from TB, 1.2 from Malaria, and 0.6M from Measles, according to the 2003 WHO World Health Report.
Furthermore, one of the major reasons TB is becoming harder to keep ahead of is HIV. The 2005 World Bank Annual Report sa
Re:Save the melodramatic crap (Score:4, Informative)
Which surveys?
If anything surveys tend show that people are primarily mongamous and are happy in a with a relationship with a single person.
Look at something like the http://www.zogby.com/soundbites/ReadClips.dbm?ID=
Even there you get over 70% of the people in a monogamous relationship, the majority for over 5 years.
While they may seek it out people don't tend to pay, less then 15%. This number is about the same for various other surveys.
If you get thoses types of numbers in an survey where people had to activly seek out the survey the numbers are going to be a lot less if you did a truly random survey of the population.
Parent
Re:Save the melodramatic crap (Score:2, Informative)
Re:Save the melodramatic crap (Score:3, Funny)
Or it means people don't ask stupid questions. If someone knows they have HIV and are still going to have sex with you, they're not going to go, "Oh, yeah, I have AIDS. I just didn't think you'd care."
"Wait, you didn't WANT herpes? Dude, I'm sorry, I didn't know. Totally my bad."
Re:Save the melodramatic crap (Score:3, Interesting)
You hit the nail right on the head. In the United States at least, AIDS is far more of a social problem than a medical problem. The fact that it firt appeared in the gay male community has had an enormous impact on the way that the disease is perceived.
For society that was founded on puitanical grounds, AIDS has been a godsend (pun intended). The evangelicals had a way to immediately lash out against homosexuality as the cause of all of our problems. When
Terrific Idea (Score:3, Insightful)
As an HIV researcher myself, I realize that we are not going to have a highly effective, preventative vaccine for HIV any time in the near future. There are no clear 'winners' in the pipeline right now, and even if a vaccine looked effective right now, it would be years (and millions of new infections) before it clears human testing and it broadly available. Issues like viral resistance to the vaccine, incomplete protection from infection, potential side effects, and a false sense of security would plauge any vaccine that is developed -- and these are many of the same issues confronting the use of drugs as HIV preventatives.
One major hurdle to testing these drugs in populations highly affected by HIV is to convince them that this intervention is not a magic bullet. There will be problems, some of which we probably can't predict. There will be breakthrough infections in people taking the drugs. And the long-term health consequences aren't known. So far, these concerns have led to the abandonment of several trials of PrEP (using tenofovir in HIV-, high-risk populations) around the world. Hopefully the new data (using multiple drugs together works better than tenofovir alone) will encourage vulnerable populations that the potential benefits may outweigh the risks.
Patents (Score:2)
This is tough to read over and over again (Score:3, Interesting)
If you are open to the idea that the orthodoxy about AIDS might not be correct or might not be scientific, then I suggest you read these two pieces of investigative journalism that came out a couple of months ago. They detail in the most succinct way possible how AIDS came about, and that is *VERY* hard to do because of how immensely complex this subject is.
http://www.sparks-of-light.org/HIVGATE%20-%20revi
http://www.sparks-of-light.org/AIDSGATE%20-%20wha
If you think that I'm insane, or that I just want to have a whole lot of unprotected sex, or that I'm a conspiracy theorist, then please just ignore this post. It means that you are not open-minded to criticism of your ideas, and the only thing I want to do is give criticism of the HIV-AIDS hypothesis a fair hearing. I believe that there are HUGE problems with the hypothesis and it has led to many people getting fabulously wealthy off of what has turned out to be misdiagnosis. I am aware that this is a serious charge, and I do not take this subject lightly.
All of that is in effort to say, "Don't mod me down. Don't be a jerk. Don't prevent someone who *wants* to hear what I have to say from hearing it." I hope it works.
Re:This is tough to read over and over again (Score:5, Informative)
The paper's initial assertion is that AIDS was introduced as a polio virus. Simple logical disproof: 1) polio vaccine is given across social/habitual classes. 2) There has not been 1 case of AIDS where the person didn't have one of the following three risk factors: blood transfusion, risky sex*, IV drug use. 3) Not everyone in the US has previous three risk factors. 4) If 2 is true 1 or 3 must be false or at least excruciatingly improbable. 5) 3 is true, therefore 1 must be false. QED. (*risky sex = sexual activity where both partners are not exclusively monogamous to each other at any time during or prior to their relationship)
Several pages deal with the controversy surrounding the initial discovery of the HIV virus. There was also controversy surrounding the discovery of DNA, therefore we shouldn't believe DNA is the 'source code' of life?
She makes light of the microliter aliquots used in the CBC tests but fails to mention that all CBC tests (test which count the types and number of cells in your blood) uses these metrics. We shouldn't trust tests for hundreds of diseases including leukemia, polycythemia, or even iron deficiency based on this implication. (for example, look at the normals on this page: http://www.saintfranciscare.com/11377.cfm [saintfranciscare.com])
She also does not respect the validity of the HIV Load test, saying that since it uses PCR (a very common technique in medicine) it cannot be accurate. (no more genetic testing, goodbye cancer diagnosis, goodbye endocrinology) She also asserts that the HIV Load assay will give false-positives and is inaccurate if the procedures are not followed. Yes, it does give false positives, it is a HIGHLY sensitive test, with a low specificity. It is not a screening test, and it cannot be used for one because of its high false positive rate. Additionally, I challenge anyone to find a test in any field that is valid when its procedures are not followed. (magnetism doesn't attract wood, therefore magnetism is false)
http://www.labtestsonline.org/understanding/analyt es/viral_load/test.html [labtestsonline.org]
But the coup-de-gras for me was her statistics that showed how low CD4 counts don't correlate to AIDS. (AIDS is, incidentally, practically being defined by low CD4 count)
* "61% of people with CD4 count = 200 in 1997 were AIDS free"
* -response: Yes, CD4=200 is the upper limit at which you see AIDS symptoms, this is expected
* "190,000 Americans in 1993 with CD4 count=200 were AIDS free"
* -response: See above, plus in 1993 the AIDS definition was changing so you see changes in the statistics. Additionally, that number is far less than a quarter of the number of AIDS cases in the US that year. (http://wonder.cdc.gov/wonder/data/aidsPublic.html [cdc.gov])
* "No studies have been done to show removal of anti-retrovirals = disease"
* -response: No, but anti-retovirals have been tightly correlated to increased CD4 counts, and their withdrawal to lower CD4 counts. It has also been shown repeatedly (and even in this paper!) that low CD4 count correlates with disease.
The list goes on and on. I just pointed out a few of the most egregious and most easily refuted examples. It just goes to show that if someone really wants to believe someth
Parent
Re:Stay with me (Score:3, Informative)
But... (Score:2, Informative)
... what if one of the various "environmental factors" models is right rather than the "single pathogen" model? IE, retroviruses start multiplying in people whose immune systems are shot already -- it's the symptom; not the cause.
I know we like single-pathogen disease models but frankly those are pretty rare. Especially with autoimmune and immunodeficient disorders, it's not as easy as people think to even define the given disorder in the first place, let alone establish a pathogenic cause. Take lupus: the
face the facts (Score:4, Insightful)
That's just not a serious possibility anymore; here are just some basic observations:
Single pathogens are sexy for epidemiologists.
Yes, and they are also the rule for infectious diseases. While susceptibility and severity of a disease may vary with environmental factors, for infectious diseases, there is usually a well-defined, clearly characterizable pathogen responsible.
Parent
Re:face the facts (Score:3, Informative)
Well, that's just not true, and the fact that people keep repeating it doesn't make it so.
Re:MOD PARENT UP (Score:3, Insightful)
Which makes sense, because the evidence as it is observed today indicates HIV-AIDS causation. See the sibling of your post for details. There's no more reason to believe AIDS is caused by anything besides HIV than there is to believe the moon landing was faked.
Oh goody. (Score:2)
are you nuts! (Score:5, Informative)
They hammer your immune system; it's like taking poison every day, it's a bit like chemotherapy in ways.. in fact, that's not a bad analogy: why don't we all start on an ongoing course of chemotherapy as a preventive measure against getting cancer?
ps. I'm not an Anonymous Coward, I'm a *Lazy* Anonymous Coward from Ireland
What to expect. (Score:5, Insightful)
Case in point: the human papilloma virus, or HPV. Now here's the thing with HPV: it's sexually transmitted, condoms don't protect against it, and doctors believe that it's responsible for seven out of ten cases of cervical cancer later in life. So, if we could develop a vaccine against it, that would be a huge strike against cancer, right?
Well... sure. But ultra right groups like the Family Research Council oppose such a vaccine, even though pharmaceutical companies have already conducted successful clinical trials. Why? Because they want to scare people into not having sex.
If this is the reaction an HPV vaccine (or, for that matter, condoms) gets, how do you think they're going to react to a cure to something which disproportionately affects gay men?
Re:Spreading fear (Score:3, Informative)
While it is not the only factor involved, there is a very big difference.
Idiotic. (Score:3, Insightful)
Re:Time for the.... (Score:2)
Re:Time for the.... (Score:4, Funny)
Parent
Re:" Drugs May Offer AIDS Prevention" (Score:2)
Silly rabbit.