Slashdot Mirror
Human Blood May Contain A Cure For AIDS
Lisandro writes "German scientists at the University of Ulm have identified a natural ingredient of human blood that prevents the HIV-1 virus from from infecting immune cells and multiplying. The molecule, which they call virus-inhibitory peptide (VIRIP), promises new types of effective treatment for HIV in the future. 'Tweaks to its amino acid components boosted its anti-HIV potency by two orders of magnitude. Tests also showed that some derivatives of the molecule are highly stable in human blood plasma, and non-toxic even at very high concentrations. A synthetic version of VIRIP also proved effective at blocking HIV, excluding the possibility that some other factor was responsible. VIRIP targets a sugar molecule which HIV uses to infect a host cell. '"
I do not believe in karma. "Funny"=-6. Do good and forbid evil. Yours, Oft-Offtopic Flamebaiting Troll.
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God
Cuz I got it by drinking human blood.
Now is that the definition of irony or what?
I don't need no instructions to know how to rock!!!!
Does this stuff affect other viruses? (Is it something that evolved for this reason?) If so, why doesn't the body make more of it already? Would that be too biologically expensive, or would that have problematic effects we haven't recognized yet?
PHEM - party like it's 1997-2003!
It may be true to a certain degree in the West, but in Africa where 15 million have died from AIDS, and 24 million are infected, it's clearly not so 'easy' to prevent.
Errr... the problem with HIV/AIDS in Africa is a cultural and economic one, not one of "can't be prevented."
The use of condoms drastically reduces infection rates. The problem that I've been reading about in Africa is that condoms are not utilized because they interfere too much in the love making process (ie, takes too long to put them on, and they're too expensive). A prototype device is being introduced here to try and address those issues.
Spread of this disease is preventable (which was the GP post's point); efforts to educate and provide the protection would be immediately effective versus waiting for a scientific cure... which would also have to be made available cheaply enough to help impoverished Africa (ie, not for many years after being made available on the market).
Diplomacy is the art of saying, "Nice doggie!" until you can find a rock.
Predators, like cats, cannot taste sweet because their body receives enough sugars from their food sources that they don't require the need to seek more out. We, as omnivores, have a much larger "taste range" as we require many different, and many more nutrients.
Sure, some people weren't as careful as they should have been and got infected, but guess what... They live in the same world with the rest of us and can subsequently spread their illness. This is a public health issue. Morality judgements of people infected with STDs don't bring about cures for them any faster. Nor does the attempted imposition of the same morality on the rest of the, as yet, uninfected population seem to be having much effect in slowing down the spread either, let alone stopping it.
How 'bout instead of taking research money away from HIV and giving it some more morally worthy disease, we just resolve to spend more research money on all of them and stop making questionable moral assessments of sick people.
If you never make mistakes, it's probably because you're not doing anything.
No, it won't. Each virus has a very specific target that it uses to inject itself into it's host cells, so this will really only benefit HIV or other viruses that have the same attack vector.
Imagine a wall with hundreds of doors on it, each with a different type of lock. Viruses are like burglars trying to break in, but they each only know how to pick one kind of lock. This type of treatment will result in blocking only the doors that have the same type of lock that HIV uses. Hepatitis, for example, would use a very different lock (different wall actually).
Or, since this is slashdot, you could also look at it as a host's firewall. HIV may attack a specific port, and this treatment may block only that port.
This is a very simplistic way of explaining it, but for the most part, this type of treatment only has an effect on HIV's specific attack characteristics. Viruses are usually very particular about what types of cells they attack, and then it can get even more specific. I'd view this as a specific fix.
Now, where things can start to get interesting is if they can manage to generalize this approach to find the appropriate blocking peptides for other types of viruses. If the approach can be generalized, then you might be able to find treatments for other viruses, but the hope for a universal cure for viruses isn't very feasible.
Viruses hijack our own internal machinery to reproduce themselves, so you can't exactly target them the same way that you can bacteria. (There are some common points that are being used to target specific classes of viruses, but I'm not aware of any universal point of attack). You can pretty much target viruses are three points: 1) at the point of infection into the host cell, 2) replication of the virus, 3) at the point where the daughter viruses leave the host cell. The approach mentioned in the article is of type 1.
"If we knew what we were doing, it wouldn't be called research." - Einstein
My fiance is a Red Cross certified HIV/AIDS instructor, so I've gotten a good earfull of what is and isn't true about AIDS "cures".
The "cocktail" that's currently used to treat HIV infection drugs to prevent HIV from entering cells, drugs to keep it from reproducing inside cells, and drugs to keep it from breaking out of infected cells. From what I read in the summary, this new treatment fits in that first category. Good thing, because HIV has this nasty tendency to mutate and become immune to any given drug after years and years of use. When that happens, the patient has no choice but to switch over to another combination of drugs, probably more expensive, and probably not as friendly to the body. If this "blood-derived" treatment adds to the list of patient-friendly treatments available, that's fantastic.
But the way I read this, it isn't the magic bullet "cure for AIDS" everyone is wishing for. It can slow down the progress of an infection, but reversing that progress is another matter altogether. Ditto for undoing damage to the immune system.
Good judgment comes from experience.
Experience comes from bad judgment.
Actually, the brain needs about 100g of glucose a day to function properly. The body however, is perfectly capable of synthesizing this amount of glucose from protein intake via a process call "gluconeogenesis". Thus your brain can function quite well with zero carb intake.