Russell L. Blaylock, M.D. See book keywords and concepts | Scientists have renamed these slow viruses "prions". But so far an intensive search for these prions has failed to make the connection with the major neurodegenerative diseases159 Also, most of the prion diseases have much shorter durations.
Other scientists are of the opinion that malfunctions of the immune system are the cause of many of these diseases.160 This is particularly so with Alzheimer's disease. This theory is based on the idea that occasionally the immune system gets contused and accidentiy attacks the nervous system, or parts of it. | Marion Nestle See book keywords and concepts | Mad Cow Disease: prions and Species Jumps
Mad cow disease emerged as a highly publicized food safety crisis of the mid-r 990s, largely confined to Great Britain. The story of this disease is relevant to our discussion for its interweaving of politics and science and its effect on public confidence. The manner in which British officials handled the mad cow crisis, for example, later contributed to public distrust of genetically modified foods. Prior to the early 1980s, hardly anyone had heard of the disease, but by 1999 it had affected at least 175,000 British cows. | Jack Challem See book keywords and concepts | Infections result from an attack on the body by pathogenic (disease-causing) bacteria, viruses, parasites, or prions. There are many ways to group infections, but for our purposes it is best to view them as either acute or chronic. Acute infections occur suddenly, such as in the case of colds and flus, followed by recovery. Chronic infections such as hepatitis or HIV/AIDS last many years and may be the ultimate cause of death. That said, acute infections can be very dangerous in themselves—the flu kills approximately twenty thousand Americans each year. | Philip Yam See book keywords and concepts | Urinary prions seem to be somewhat infectious ?some of the animals inoculated with them got sick, but not all.
A reliable urine test would also be a boon to livestock testing, which currently relies on brain tissue taken after a suspected animal has been killed. In May 2002,1 went to the farm of Dick and Virginia Sisco in southern New Jersey, where they maintain a flock of certified, scrapie-free sheep. Once Linda Detwiler, the USDA veterinarian in charge of BSE surveillance in the U.S., arrived, we hopped into the pens to collect sheep urine. | | By the end of 2002, she found that one-third of them have the urinary prion; now, to confirm the utility of urinary prions, she has to wait for all the patients to die, which she admitted is rather depressing.9
Considering the need—not to mention the money to be made—a live diagnostic test for prion diseases will probably be created within the next few years. It's harder to make any predictions for treatment. The many ideas and approaches that researchers have are quite astonishing and clever, and the success of experiments in cell cultures offers much hope. | | Such activation causes the tonsils to swell and become inflamed, presumably making it easier for BSE prions to enter at that point—in other words, having a cold could have predisposed young people to contracting vCJD.
The number of sick cows, the control measures used to halt the spread of BSE, and the disease profile all figure in modeling the number of future vCJD deaths. With these and other factors, and working with various assumptions, Anderson and his Imperial College colleagues ended up with a highly complex model with many flexible parameters. | Marion Nestle See book keywords and concepts | It did not, however, inactivate prions, a generic term for the highly unusual infectious agents believed to cause a disease called scrapie in sheep and related diseases in other animals. These invariably fatal diseases affect the brain and nervous system; they are called spongiform encephalopathies because they cause sponge-like holes in the brains of animals and people. Prion diseases present fascinating biological problems. They appear to involve transmission via proteins (rather than bacteria, viruses, or DNA), as well as "species jumps" from one kind of animal to another. | J. E. Williams, O.M.D. See book keywords and concepts | Viruses were long thought of as the smallest infectious agent, yet we now know of two other pathogens that are even smaller: prions, the suspected cause of Mad Cow Disease, discovered only recently by the 1997 Nobel Laureate in medicine, Stanely Prusiner; and viroids, organisms that only affect plants.
Viruses Are Parasites: Viruses are intracellular molecular parasites. They enter the body silently, and in the case of HIV and hepatitis C viruses, they often do so without notice. Then they use our cells to manufacture substances needed for their own replication and life cycle. | | A new category, proteinaceous infectious particles (PrPs), or prions, the cause of mad cow disease, or bovine spongiform encephalopathy (BSE), are rogue proteins that convert normal protein into misshapen and deadly forms. What makes these diseases threatening is their ability to jump species and easily penetrate brain tissue.
Prion diseases are unique from other infectious illnesses in that they are both an infectious and hereditary disease, and occur in animals and humans. | James A. Howenstine, MD See book keywords and concepts | Some of these diseases appear to be caused by infectious particles called prions.
In 1997 the FDA banned the feeding of cattle parts to cattle but cattle were still permitted to eat horses and pig protein. Pigs eating scrapie
(prion) infected sheep could still infect cows with BSE.
What Should Beef Lovers Do?
One solution is to become a vegetarian. The other is to find a cattle rancher who will grow cattle by grazing and who refused to implant hormones and use antibiotics or pesticide contaminated feed. Such a rancher deserves to be paid a premium price for his meat which is safe to eat. |
Textbook of Natural Medicine 2nd Edition Volume 2Michael T. Murray, ND See book keywords and concepts | | Use caution when employing glandular products in the age of prions and cross-species viral contamination. See also "Eleutherococcus senticosus" and "Glycyrrhiza glabra", both of which are purported to help in "adrenal fatigue".
Astragulus membranous
Astragulus injections enhance antibody response to a T-dependent antigen.162
Co-enzyme Q10
Dosage: 30-100 mg t.i.d.
Research review:
• CoQ10 increases blood levels of CD4 lymphocytes when administered at 100 mg/day.163
• It significantly increases levels of IgG in AIDS patients. | Earl Mindell and Hester Mundis See book keywords and concepts | These products may contain nerve fibers, which means they're more likely to contain the prions (infectious proteins) involved. (If you can't resist eating steak, flank steak and filet mignon are presumably safer.)
107. Resolving the Protein Predicament
Everyone knows that protein is essential for life. It is vital for the growth, development, and repair of all body tissues; regulation of the body's water balance; the formation of hormones and enzymes necessary for basic life functions and antibodies needed to fight infection; and more. But too much of a good thing can be bad for you. | Larry Trivieri, Jr. See book keywords and concepts | However, the voluntary "ban" still allows blood, gelatin, some beef parts, pigs, horses, and chickens to be used in animal feed, so BSE molecules (called prions) can still be transmitted to humans.
Both the testing procedures and regulations regarding cattle feed are ineffective. Federal meat inspectors examine less than 1 % of the carcasses being processed for consumption. Out of 900 million head of cattle, the U.S. Department of Agriculture has tested only 12,000 sick cows for mad cow disease. | Russell L. Blaylock, M.D. See book keywords and concepts | But so far an intensive search for these prions has failed to make the connection with the major neurodegenerative diseases159 Also, most of the prion diseases have much shorter durations.
Other scientists are of the opinion that malfunctions of the immune system are the cause of many of these diseases.160 This is particularly so with Alzheimer's disease. This theory is based on the idea that occasionally the immune system gets contused and accidentiy attacks the nervous system, or parts of it. | | Scientists knew that some special viruses, called prions, could infect the brain and cause delayed killing of cells and even lead to dementia in humans. It initially sounded like a perfect answer to the puzzle. But there were problems with this theory. First, the virus tends to affect widespread areas of the brain rather than selected sites. Second, it caused symptoms not seen with Alzheimer's disease. And, third, the other pathological features did not match.
Several features of Alzheimer's dementia led scientists to believe that it was caused by an environmental toxin. | Philip Yam See book keywords and concepts | Cows in the Crosshairs
A name like Corporate Boulevard might conjure visions of sleek, steel-and-glass office buildings lining the street and rows upon rows of parked cars. One such boulevard in New Jersey, however, doesn't even have lanes painted on it. About an hour's drive down the New Jersey Turnpike from New York City, this dead-end road in Robbinsville, New Jersey, leads to a modest, one-story building complex that houses the offices of several organizations. In one corner is the Animal and Plant Health Inspection Service (APHIS), the arm of the U.S. | | It's a uniquely North American affliction, and deer hunters aren't happy about it.
CHAPTER 11
Scourge of the Cervids
Chronic wasting disease of deer and elk, once confined to a patch in the Rockies, spreads across the nation.
The eradication zone, covering some 411 square miles, lies about 40 miles west of Madison, the capital of Wisconsin. There, in the southwest region of the state, thousands of white-tailed deer live—or rather, used to live. | David Deutsch See book keywords and concepts | Some viruses are based on a related type of molecule, RNA, while prions are, in a sense, self-replicating protein molecules.) Special structures within each organism's cells act as computers to execute these gene programs. The execution consists of manufacturing certain molecules (proteins) from simpler molecules (amino acids) under certain external conditions. For example, the sequence 'ATG' is an instruction to incorporate the amino acid methionine into the protein molecule being manufactured. |
Textbook of Natural Medicine 2nd Edition Volume 2Michael T. Murray, ND See book keywords and concepts | | Research review:
• Thymic hormone (of which zinc is an essential cofactor) stimulation may be important in AIDS.192
• It improves clinical symptoms and T-cell defects in the early stages of HIV infection.193
• Thymostimulin increases CD4 lymphocytes.194
• It regulates differentiation of T-cell precursors, normalizing the ratio between helper and suppressor subsets.195
Vitamin B6 (pyridoxine) Dosage: up to 100 mg b.i.d. |
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