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#51
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AFLD offers to retest Lance's 1999 pee
On Oct 6, 11:37*am, MagillaGorilla wrote:
Michael Press wrote: In article , *MagillaGorilla wrote: Bob Schwartz wrote: MagillaGorilla wrote: When the French ladies at the LNDD who run the tests and determine the positivity run an EPO test on sample #60152, how the hell do they know it's Lance's to 'get him?' Dumbass, The claim was that they ****ed up the test by virtue of not knowing how to run the equipment they were using. This is agreed upon by everyone involved except you. Bob Schwartz That's like saying if you run an assembly line at the Ford Motor Plant in Michigan improperly, you will get a Mercedes instead of a broken Ford. You cannot get an EPO positive from a sample that was run improperly or from a degraded sample. *You would simply get a negative result if either occurred. Also, there was no claim that the women ran the EPO tests improperly since WADA never cooperated with the so-called independent UCI investigation (a joke in and of itself considering the investigator was hired by Verbruggen). Can you show me any link that says they ran the EPO tests improperly? No, you cannot. *So where do you come up with this stuff? Can you show me the detailed protocols for detection of EPO, and how it is impossible for the test to indicate EPO when no EPO is present? Pretend that I do not consider the assembly line analogy impossibly lame. It's a complex protein. The test detects a complex protein through gel electrophoresis. How can you get the EPO protein if it's not there? That's almost like saying it's possible to find your DNA in water that doesn't contain your DNA. *Not possible. Magilla dumbass, one possibility is rutger beke proteins, the supposed mechanism is here : http://www.rutgerbeke.com/en/news/march082005.asp but based on that it seems like it should be pretty easy to correct for. |
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#52
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AFLD offers to retest Lance's 1999 pee
On Oct 6, 11:29*am, MagillaGorilla wrote:
The UCI is the union for the riders? *Absolutely not. *That would be like saying the NBA is the union for basketball players. *In fact, players need to form a player's union specifically to fight the NBA (and teams). dumbass, the UCI is supposed to be the union for riders. the UCI rulebook gives guidelines on what the teams are supposed to pay riders and what organizers are supposed to provide in terms of prizemoney and other facilities. that is something like a union. the NBA on the other hand actually generates it's own revenue by organizing the events and through it's franchisees contracts athletes. the UCI doesn't do either of these things. the UCI generates revenue by asking organizers and athletes/teams to hand over a chunk of their earnings. the reason the UCI does a poor job is because it is torn between representing the interests of euro pro cycling and all the other amateur/small-time disciplines and governing bodies it represents. the NBA is a member of FIBA the int'l gov. body for basketball, which makes it possible for NBA players to play in the olympics, but FIBA is not involved in the dealings between the NBA and it's players (for example FIBA doesn't intervene when the commissioner suspends ron artest). |
#53
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AFLD offers to retest Lance's 1999 pee
Amit Ghosh wrote:
On Oct 6, 11:29 am, MagillaGorilla wrote: The UCI is the union for the riders? Absolutely not. That would be like saying the NBA is the union for basketball players. In fact, players need to form a player's union specifically to fight the NBA (and teams). dumbass, the UCI is supposed to be the union for riders. the UCI rulebook gives guidelines on what the teams are supposed to pay riders and what organizers are supposed to provide in terms of prizemoney and other facilities. that is something like a union. The reason why this isn't true is because there is NO representation in the UCI by riders. Therefore, by definition, the UCI is not their union. They are simply a licensing and rules-making body that offers some claimed protections to riders, although this is unclear since I can find 20x as many rules that penalize a rider as do reward them. The definition of a union is an organization that solely represents the best interest of the riders against "management" - whether its teams or the UCI. Magilla |
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AFLD offers to retest Lance's 1999 pee
Donald Munro wrote:
Kyle Legate wrote: How detailed do you want? The EPO test uses a Western blot detection method. What this entails is the separation of proteins according to size and recognition with a specific antibody. Interesting description of the process, thanks. Thankfully the lemon club must have started their winter break, thus allowing the president to make detailed contributions to rbr. It's been a long season. After the Worlds I had nothing left. |
#55
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AFLD offers to retest Lance's 1999 pee
Amit Ghosh wrote:
one possibility is rutger beke proteins, the supposed mechanism is here : http://www.rutgerbeke.com/en/news/march082005.asp but based on that it seems like it should be pretty easy to correct for. It's most easy to correct for if your bull**** meter is properly calibrated. His claims are outrageous! I mean, elevated urinary pH from bacterial contamination?! Any microbiologist will tell you that the presence of bacteria in urine would lower the pH. Also, BLAST the EPO sequence against the entire protein database, and alpha-ACT is nowhere in sight. It doesn't matter if it runs at the same position in the gel if the antibody can't detect it. As an addendum to my wordy earlier post. Rutger Beke's scientifically incapable team refers to isoelectric focusing. This amounts to separating proteins by charge rather than by charge/mass ratio. I stand corrected. Endogenous and exogenous EPO are still separated from one another. |
#56
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AFLD offers to retest Lance's 1999 pee
On Oct 7, 10:06*am, MagillaGorilla wrote:
Amit Ghosh wrote: The reason why this isn't true is because there is NO representation in the UCI by riders. * dumbass, actually the gov. bodies all have a riders representative. i don't know how UCI rules are formed, but supposedly there is supposed to be an input from the membership (riders,officials,teams,organizers). Therefore, by definition, the UCI is not their union. *They are simply a licensing and rules-making body that offers some claimed protections to riders, although this is unclear since I can find 20x as many rules that penalize a rider as do reward them. many of the rules are there to make the race fair. so one cheating rider makes the race unfair to all the non-cheaters. so in theory penalizing the occasional cheater benefits the majority of riders. they apparently hadn't foreseen a scenario where 80% of the riders are potentially cheaters. The definition of a union is an organization that solely represents the best interest of the riders against "management" - whether its teams or the UCI. riders are paid by their teams or by race organizers, so in essence those two parties are the "management" and the UCI is just a body that rubber stamps everything. as i've been saying it's a system suited for managing amateur sports, but it doesn't work in a situation where some athletes are being paid large sums of money to compete. |
#57
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AFLD offers to retest Lance's 1999 pee
Amit Ghosh wrote:
On Oct 7, 10:06 am, MagillaGorilla wrote: Amit Ghosh wrote: The reason why this isn't true is because there is NO representation in the UCI by riders. dumbass, actually the gov. bodies all have a riders representative. i don't know how UCI rules are formed, but supposedly there is supposed to be an input from the membership (riders,officials,teams,organizers). The devil is in the details. Those "reps" have no power. They are simply an advisory board. Therefore, they have no function whatsoever. Second, the idea that former cyclists even know what the **** they're doing on one of these boards is laughable given the bull**** that's already in the UCI rulebook. Magilla |
#58
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AFLD offers to retest Lance's 1999 pee
Amit Ghosh wrote:
On Oct 7, 10:06 am, MagillaGorilla wrote: Amit Ghosh wrote: The reason why this isn't true is because there is NO representation in the UCI by riders. dumbass, actually the gov. bodies all have a riders representative. i don't know how UCI rules are formed, but supposedly there is supposed to be an input from the membership (riders,officials,teams,organizers). Therefore, by definition, the UCI is not their union. They are simply a licensing and rules-making body that offers some claimed protections to riders, although this is unclear since I can find 20x as many rules that penalize a rider as do reward them. many of the rules are there to make the race fair. so one cheating rider makes the race unfair to all the non-cheaters. so in theory penalizing the occasional cheater benefits the majority of riders. they apparently hadn't foreseen a scenario where 80% of the riders are potentially cheaters. The problem with the UCI is they selectively enforce rules. For example, the 3km rule was not enforced when Levi crashed outside the 3km zone at AMGEN. You'll never see an NBA official count a shot as 3 points if it's inside the 3-point line just because he "thinks it's unfair" that the home crowd favorite didn't shoot behind the line. As for doping, the UCI is still ****ed up. How many people has the biological passport system caught so far? NONE. Schumacher was supposedly part of that - yet the CERA EPO he was taking didn't affect his numbers? Obviously there's something wrong with this system. The other thing you have to ask is how come the AFLD caught all these riders and the UCI didn't catch a single one? The Tour was held outside the aegis of the UCI this year - how come the UCI didn't target riders at the Tour? The UCI catches like 2 rider/year - that tells me they are just soft-pedaling this whole anti-doping thing. Magilla |
#59
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AFLD offers to retest Lance's 1999 pee
In article ,
MagillaGorilla wrote: Michael Press wrote: In article , MagillaGorilla wrote: Bob Schwartz wrote: MagillaGorilla wrote: When the French ladies at the LNDD who run the tests and determine the positivity run an EPO test on sample #60152, how the hell do they know it's Lance's to 'get him?' Dumbass, The claim was that they ****ed up the test by virtue of not knowing how to run the equipment they were using. This is agreed upon by everyone involved except you. Bob Schwartz That's like saying if you run an assembly line at the Ford Motor Plant in Michigan improperly, you will get a Mercedes instead of a broken Ford. You cannot get an EPO positive from a sample that was run improperly or from a degraded sample. You would simply get a negative result if either occurred. Also, there was no claim that the women ran the EPO tests improperly since WADA never cooperated with the so-called independent UCI investigation (a joke in and of itself considering the investigator was hired by Verbruggen). Can you show me any link that says they ran the EPO tests improperly? No, you cannot. So where do you come up with this stuff? Can you show me the detailed protocols for detection of EPO, and how it is impossible for the test to indicate EPO when no EPO is present? Pretend that I do not consider the assembly line analogy impossibly lame. It's a complex protein. The test detects a complex protein through gel electrophoresis. How can you get the EPO protein if it's not there? Okay. I will trust you on this. That's almost like saying it's possible to find your DNA in water that doesn't contain your DNA. Not possible. Another cool analogy. -- Michael Press |
#60
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AFLD offers to retest Lance's 1999 pee
In article ,
Kyle Legate wrote: Michael Press wrote: Can you show me the detailed protocols for detection of EPO, and how it is impossible for the test to indicate EPO when no EPO is present? Pretend that I do not consider the assembly line analogy impossibly lame. How detailed do you want? The EPO test uses a Western blot detection method. What this entails is the separation of proteins according to size and recognition with a specific antibody. Proteins from a riders urine (or blood also, these days) are separated by SDS-PAGE: this is a slab of porous polyacrylamide with holes of a defined size that let small proteins sail through quicker than large proteins. The proteins are driven through using voltage (or current, depending on the specific PAGE system). Prior to loading the sample on the gel the proteins are boiled with a detergent which serves the dual purpose of denaturing them and applying a constant charge per unit length so indeed small proteins run faster than large ones. Once separation is complete, the proteins are transferred from the polyacrylamide slab to a support membrane, again through the application of current, for the remaining steps. Specific proteins are detected through the use of antibodies. As you know, the antibodies in your body are highly specific against certain pathogens; commercial antibodies are likewise highly specific. For detection of linear protein samples on a gel an antibody is raised in an animal (usually a rabbit or mouse) against a synthetic peptide (the antigen) corresponding to the protein of interest. Prior to making the antibody the sequence of the antigen is designed and checked using an online tool called BLAST. BLAST aligns your input sequence against all known protein, peptide, and theoretical gene product sequences from all organisms in the database (hundreds) to determine how specific for your protein your proposed antigen is. Once the peptide sequence BLASTS only for EPO, it is synthesized, injected into the animal, and in about 2 months you have the antibody. To separate the antibody of interest from the antibodies already present in the animal, there are two approaches. Either the antibody is pulled out of the serum using the original peptide as bait, or a cell line is derived which makes only the antibody of interest (significantly more work but more desirable for long term production of antibody). I hope this convinces you that the antibody used in the EPO test specifically recognizes only EPO and nothing else, no bacterial protein, no peptide fragment from a different protein in the urine, only EPO. Check. The support membrane containing the size-separated proteins is incubated with the antibody against EPO. This antibody is then recognized by another antibody (anti-rabbit or anti-mouse, usually raised in goat or donkey), coupled to an enzyme that allows for detection via fluorescent breakdown products from the developing solution. To wit, the EPO-primary antibody-secondary antibody complex will glow when a solution of hydrogen peroxide and Luminol is placed on the membrane. A picture is taken with film specific for the purpose, or with a CCD camera in a dark box. Based upon the position of the glowing band on the membrane, even your mother would be able to tell if Armstrong took EPO. Here's why. Your kidney cells produce endogenous EPO. Part of the production process is the addition of sugars to the protein, which makes it migrate as a heavier protein in the polyacrylamide gel. Synthetic EPO is also made by cells, but these cells are from chinese hamster ovary. The different species and organ of origin means that these cells have different sugar attachment enzymes, which leaves the EPO differently labeled when it is made from these cells. Your body's EPO and synthetic EPO are therefore slightly different in mass and will run to different positions in the gel. What a negative test will look like is a nice, clean, single band owing to the athlete's own EPO. What a positive test will look like is this same band, but the addition of a second band nearby. An inconclusive test would look like either nothing at all, or a smear beginning at the normal position of EPO and extending down the gel until the antibody recognition site is destroyed. I presume that years-old urine samples were being tested to determine whether after all these years EPO would now present as a smear. Since they found exogenous EPO in Armstrong's samples I presume that the integrity of the EPO was just fine, and they saw two distinct bands. Based on the specificity of the antibody, outlined above, and the various things that can go wrong with the test, it it only possible to have false negatives based on inconclusive test results, and not false positives. In all my years of doing Western blots (for research purposes) I have encountered false negatives and inconclusive results many, many times, but I have never encountered a false positive. It is just not in the nature of the method to give false positives. Okay, thanks for the write up. But how does EPO get into the urine? Protein in the urine is a bad thing, yes? Indicates serious kidney problem. Is it that tiny amounts in the urine are not a problem? -- Michael Press |
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