OliverH,
I think you need to review your biology. First, I am not suggesting that hepatitis B causes AIDS. I am merely pointing out that there is a good correlation between the two yet proves nothing. Hepatitis B is NOT the cause of AIDS (get it now?)
“I am not sure how you want to claim that HIV does not cripple the immune system when, in fact, it proliferates in immune cells.”
HIV does proliferate in immune cells, but it doesn’t kill them in vitro. I’ve passaged H9 cells infected with HIV for months and don’t see any significant decrease in proliferation (also, remember, HIV is supposed to simultaneously cause t-cell depletion as well as lymphoma (cancer…overproliferation of t-cells)
“No, it is not circular. They have the symptoms, and as such they have the syndrome. If they had a different immune deficiency, they would have SIMILAR but distinct symptoms. For them to have a different form of AIDS not caused by HIV, they would have to have an agent in their body capable of causing such a set of symptoms.”
Again, you miss my point. The syndrome is already very different in different populations. Homosexual males present with KS while IVDU’s present with TB and pneumonia, while Africans present with high fever and slim disease. Are you suggesting that these are all different syndromes caused by different agents? Also, the definition is circular no matter how you look at it: Immune dysfunction + HIV = AIDS, and nothing else equals AIDS.
“Sorry, but your entire assumption is wrong. If his immune system IS already crippled, he would have a hard time contracting HIV, let alone, testing positive for it. That would require a)the cells being present for HIV to proliferate in and b)his antibody production being intact.”
Actually, people with a crippled immune system have no problem catching HIV. Are you assuming that there are zero t-cells left?!? Also, people in advanced stages of AIDS can still produce antibodies just fine…in fact, that’s part of how they are tested for HIV! Not to mention, on their deathbed AIDS patients seldom show infection in more that 1 in 500 t-cells.
"One needs to be a scientist to understand what is standard practice and what isn’t. As such, I suggest you acquire a basic understanding of the tools you discuss before dismissing a test. In a western blot, antibodies are used that reconize a sequence of the target protein. They will frequently, not ideally, of course, recognize other similar sequences as well, leading to unspecific bands on the western blot. If you have a lot of protein, you will see little more than a bunch of garbage, or several thick bands that might overlap. If you’re lucky. If not, you will just see a smear. When you dilute it, separate bands become much more discernible. You don’t just check for the presence of a protein in a western blot, you check whether it has the right SIZE, too. Seeing something in a western is one thing. It by no means is an indication of the presence of the protein you are looking for. Seeing something of the right SIZE, and something that is reproducible, even when you dilute the sample, is something entirely different as having a dark spot on a film.
Sorry, man, but you can’t dismiss tests if you don’t know how they work. I’d be glad if westerns were as binary as you make them out to be. If they were, I wouldn’t have been trying the same experiment over and over again over the past two months trying to make sense of the results."
It is not standard practice to dilute serum 400X for any other antibody test in the clinical sciences. Nonspecific binding is not the reason for this dilution. The bands of the correct SIZE are where they belong on the gel in everyone that is tested but only show up in HIV infected people at high dilution. Nonspecific binding of antibody can be a problem in Westerns but it should not overwhelm the protein that you are looking for. If you have that much nonspecific binding then your assay is useless. If you are wasting this much time on your assay, I would definitely look into using a different antibody. And you can use all the extra time you save to bone up on your biology (I would suggest cell and molecular biology)