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Scientists said yesterday that they have used genetic engineering techniques to produce the first cattle that may be biologically incapable of getting mad cow disease.
The animals, which lack a gene that is crucial to the disease's progression, were not designed for use as food. They were created so that human pharmaceuticals can be made in their blood without the danger that those products might get contaminated with the infectious agent that causes mad cow.
Originally posted by sardion2000
Uhh, this technique doesn't get rid of the Prions, it just makes them immune to them. If we consume this, we would risk the same thing as before. This research will most likely be used to create a BSe Vaccine for US to use.
[edit on 3-1-2007 by sardion2000]
While Monsanto walked away with its first year profits from selling prohibitively expensive inferior seeds, the Genetic Engineering Approval Committee (GEAC) in India gets ready to accord approval to yet another strain(s) of Bt cotton for the northwestern parts of the country and too after a hurridly conducted one-year of farm trials. Cotton farmers, in the bargain, have been left high and dry.
That in the very first year of commercial planting, Bt cotton should be faced with American bollworm attack (the insect against which it is supposedly resistant), is a clear pointer to the fact that the science/technology was not at all perfect. Bt cotton has also seen an increased infestation of other sucking pests. The crop came under an increased attack of wilt disease and of course has proved to be a water guzzler. And as far as the economics is concerned, it has gone wrong everywhere.
Protein infectious agent associated with several neurological diseases (scrapie; kuru; Creutzfeld-Jakob syndrome; Alzheimer's disease). Each disease has a different prion.
Prion: A disease-causing agent that is neither bacterial nor fungal nor viral and contains no genetic material. A prion is a protein that occurs normally in a harmless form. By folding into an aberrant shape, the normal prion turns into a rogue agent. It then coopts other normal prions to become rogue prions.
Prions have been held responsible for a number of degenerative brain diseases, including scrapie (a fatal disease of sheep and goats), mad cow disease, Creutzfeldt-Jacob disease, fatal familial insomnia, kuru, an unusual form of hereditary dementia known as Gertsmann-Straeussler-Scheinker disease, and possibly some cases of Alzheimer's disease.
Dr. Stanley B. Prusiner received the 1997 Nobel Prize in Physiology or Medicine for his discovery of prions. See also: Prusiner, Stanley B..
prion (plural prions)
1. The etiologic agent of transmissible spongiform encephalopathies. The only self-replicating cause of disease known to lack nucleic acids.
2. A self-propagating alternative conformer of any protein.
cancerweb.ncl.ac.uk...]prion - The word, for proteinaceous infectious agent, was coined in 1982 by neurologist Stanley Prusiner as part of a hypothesis regarding ailments bearing aetiologic resemblance to those caused by slow viruses (for instance, kuru). The hypothesis has been borne out by investigation. Prions are now believed responsible for several transmissible neurodegenerative diseases
...U.S. herd an ideal resource for companies that extract blood and other products from cattle for use in human pharmaceuticals.
...it may not be necessary for Hematech to use prion-free cattle as it strives to make potent, disease-killing antibodies in cattle for use in humans with life-threatening infections.
Misfolded prion proteins are blamed for BSE and other, similar brain diseases. It is known that certain genetic variations make animals more susceptible to the diseases.
Originally posted by Long Lance
one question for everyone: Who is even testing for deformed proteins (aka prions) in, say, foodstuffs and cosmetics?
iirc, GMOs are tested by DNA sequencing (even if incomplete), proteins are not scrutinized at all. out of sight - out of mind ?
suspected example: www.abovetopsecret.com...
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