Slashdot Mirror
Crocodile's Immune System Kills HIV
ASEville writes "In an ongoing effort to stop the spread of HIV, scientists in Australia have discovered that crocodiles can fight off HIV and kill the virus. This is a major boon to medicine because the crocodile serum can also fight things that are penicillin resistant such as staphylococcus aureus."
Ummm.... So? The same thing can be said of chlorine bleach.
True, but since this agent doesn't kill or harm crocodiles there's a decent chance it'll be safe for humans.
There is nothing in the article to suggest that they have isolated the specific component that kills HIV, let alone determined that it is safe for human injection.
Very true. It's called research. You start with knowing very little, and eventually you might get something usefull. They're still at the knowing very little stage. Maybe they might get to the knowing a bit more stage sometime later.
I guess what I'm confused by is why you expected some announcement of a cure. Haven't you ever seen articles that talk about new research, breadcrumbs of information, etc? The answers don't arrive all in one big piece. This article merely talks about one stage of one search.
AccountKiller
! SITUATION! Your mom works as a paramedic saving people's lives. One night she rolls up on a multiple vehicle accident. A young girl, who is infected is trapped, your own mother, who is trying to help, cuts her arm while the blood of the girl is everywhere, so your mom gets infected, I guess with your attitude your mom just deserved it. Who is to blame though your mom or the INNOCENT girl's mom? You have a very perturbed view of this subject and should keep your mouth shut... and this is a very possible situation that could and probably has happened.
The answer to your lack of understanding is going to school and learning how things actually work. Not constructing theories about it because you watched a program on the Discovery channel. I mean this in a constructive way, because what you are saying is not related to reality at all and that is worrying. "Some kind of internal problem" means you are not really qualified to speak on the subject in an authoritative manner, really. There is nothing wrong in admitting you don't know something. There's a vast amount of stuff I don't know. Disease is something I am an expert on, though. It goes with the job, really.
First, it's asbestos, not azbestos. Second, asbestos has been linked to mesothelioma, not lung cancer. Asbestosis in the lung is no fun at all, but you don't get lung cancer. The mesothelioma is a cancer of the pleura, a membrane that is next to the lung, not the lung itself. Third, asbetos is an irritant that your lung cannot get rid of. This constant source of irritation causes the release of chemicals by nearby cells called growth factors. The constant local exposure to growth factors is one of the things that "takes off the brakes" in the cell cycle, and this, combined with mutations, causes the start of the cancer. Not everyone exposed to asbestos will get cancer from it. You need to have the initiation step (the mutation) as well as the promotion step (the exposure to growth factors). Fourth, this has absolutely nothing to do with HIV and AIDS.
Now to address the other part of your argument.
The HIV virus is an RNA virus. This RNA is changed to DNA by an enzyme called reverse transcriptase, that comes with the virus. This DNA can and IS merged with our own DNA. It becomes a fundamental part of you. When it's like this, there is no way I can get rid of it without killing the cell.
Some infected cells start to produce copies of the virus, and they eventually die. Other "healthy" cells are infected with the virus DNA, but those genes are not currently expressed. We're still not sure what causes a cell to suddenly switch the virus production switch to "on", and when we know this we will be one step closer to curing this disease. Still other cells (the macrophages) are capable of being infected by the HIV virus, and producing a limited amount of copies of this virus. The macrophages are not normally wiped out by this, but all you need is one copy of the virus to re-infect the whole T helper cell colony again.
So we have: 1) cells that die quickly 2) cells that take a long time to get sick and die and 3) cells than never die from the disease, but are capable of re-infecting you at any time.
This explains why HIV is a chronic infection, unlike the common cold, or viruses that cause diarrhoea which are SO aggressive they basically kill ALL the cells within days, and run out of hosts. With HIV, you create new, healthy hosts a lot quicker than the infection can kill them. But these hosts are getting constantly infected. Eventually the amount of infected cells and virus production is so great that cells are infected and die the moment they are produced or become active. This is when you get AIDS because the immune system is now collapsing.
You may not know how HIV works, but we certainly do. Billions of dollars of research money were NOT wasted. In the 1980's we knew almost nothing about how any virus worked. But with HIV there's not much that can be done about it BECAUSE of the way it works. Maybe one day we will find a better way of attacking the virus directly before it gets into the cells. We're not there yet though.
Seven puppies were harmed during the making of this post.