Charlie;
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More of the same DTN Article
"In Japan, the test-all policy, started soon after the September 2001 announcement of Japan's first BSE case, was originally thought to be overkill by Japanese experts. It involves testing each year about 1.2 million cows that are sent to the slaughterhouse.
"At first, we proposed testing only 900,000 cattle," recalls Professor Takashi Onodera, a molecular immunologist at the University of Tokyo who heads a BSE governmental advisory panel. "The politicians in the (ruling) Liberal Democratic Party pushed for testing all. Since it only meant another 300,000 cows, we agreed."
Professor Onodera is one of a number of scientists who say the test results of Japan's last two mad cow cases -- numbers eight and nine -- may mean that they have found a "a new form of the prion causing the disease." In essence, the Japanese scientists think there may be different strains of BSE, with some showing up in younger animals.
The test that found BSE in Japan's last two cases is called Western Blotting, and it is used in some European countries as well. Among its advantages over the Gold Standard test are speed -- results in hours instead of weeks -- and price (less than a fourth the Gold Standard test). The lower price allows many more animals to be tested without increasing the cost. In Western Blotting a brain-tissue specimen is liquefied and then treated with a special mixture that degrades normal prions, leaving only the BSE-specific abnormal prions in the specimen.
Onodera and some other scientists believe Western Blotting should be the new "gold standard."...
USDA is not convinced.
At a press conference, USDA chief veterinarian Ronald Dehaven, questioned the Japanese test results for the the last two BSE cases. "They (the Japanese) have reported them as positive, and yet both of those animals were negative on the immuno-histo chemistry test, the test that is internationally recognized as the gold standard test. They have been positive on other tests," he said, referring to the Western Blotting tests....
Onodera is waiting for the results of more extensive experiments being conducted in Japan by two government laboratories -- The National Institute of Infectious Diseases and the National Institute of Animal Health. They have started scientific tests by infecting "transgenic" mice with the suspect BSE tissue, but the results won't be available until later this year at the earliest.
In the meantime, the world just has to wait for further developments. BSE has proven to be a maddeningly fickle pathogen and it does not grow very rapidly even in laboratory conditions. In the eyes of many Japanese consumers, Japan's test-all policy is proving its worth, at least in easing consumer worries about eating beef. What worries scientists is that Japan is just beginning to see the results of having fed cattle with meat and bone feed -- the chief suspect in spreading BSE. Japan banned it only after the first case was found in September 2001. The government is still trying to locate and destroy stockpiles of the feed.
It is unclear just what the U.S. will propose next week when a senior delegation from the USDA arrives for talks with their Japanese counterparts. But on the critical question of testing methods, the governments are very far apart.
Onodera has his own test: "Will you eat meat from a cow that tests negative on one test and positive on the other?""
How about you Charlie, would you serve beef to your best freinds or their children, if it tested positive to the Japaneese "Western Blotting tests"?
Is this not the real question to be asked here?
Here is where I am going:
More of the same DTN Article
"In Japan, the test-all policy, started soon after the September 2001 announcement of Japan's first BSE case, was originally thought to be overkill by Japanese experts. It involves testing each year about 1.2 million cows that are sent to the slaughterhouse.
"At first, we proposed testing only 900,000 cattle," recalls Professor Takashi Onodera, a molecular immunologist at the University of Tokyo who heads a BSE governmental advisory panel. "The politicians in the (ruling) Liberal Democratic Party pushed for testing all. Since it only meant another 300,000 cows, we agreed."
Professor Onodera is one of a number of scientists who say the test results of Japan's last two mad cow cases -- numbers eight and nine -- may mean that they have found a "a new form of the prion causing the disease." In essence, the Japanese scientists think there may be different strains of BSE, with some showing up in younger animals.
The test that found BSE in Japan's last two cases is called Western Blotting, and it is used in some European countries as well. Among its advantages over the Gold Standard test are speed -- results in hours instead of weeks -- and price (less than a fourth the Gold Standard test). The lower price allows many more animals to be tested without increasing the cost. In Western Blotting a brain-tissue specimen is liquefied and then treated with a special mixture that degrades normal prions, leaving only the BSE-specific abnormal prions in the specimen.
Onodera and some other scientists believe Western Blotting should be the new "gold standard."...
USDA is not convinced.
At a press conference, USDA chief veterinarian Ronald Dehaven, questioned the Japanese test results for the the last two BSE cases. "They (the Japanese) have reported them as positive, and yet both of those animals were negative on the immuno-histo chemistry test, the test that is internationally recognized as the gold standard test. They have been positive on other tests," he said, referring to the Western Blotting tests....
Onodera is waiting for the results of more extensive experiments being conducted in Japan by two government laboratories -- The National Institute of Infectious Diseases and the National Institute of Animal Health. They have started scientific tests by infecting "transgenic" mice with the suspect BSE tissue, but the results won't be available until later this year at the earliest.
In the meantime, the world just has to wait for further developments. BSE has proven to be a maddeningly fickle pathogen and it does not grow very rapidly even in laboratory conditions. In the eyes of many Japanese consumers, Japan's test-all policy is proving its worth, at least in easing consumer worries about eating beef. What worries scientists is that Japan is just beginning to see the results of having fed cattle with meat and bone feed -- the chief suspect in spreading BSE. Japan banned it only after the first case was found in September 2001. The government is still trying to locate and destroy stockpiles of the feed.
It is unclear just what the U.S. will propose next week when a senior delegation from the USDA arrives for talks with their Japanese counterparts. But on the critical question of testing methods, the governments are very far apart.
Onodera has his own test: "Will you eat meat from a cow that tests negative on one test and positive on the other?""
How about you Charlie, would you serve beef to your best freinds or their children, if it tested positive to the Japaneese "Western Blotting tests"?
Is this not the real question to be asked here?
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