Avoiding detection just got harder for drug cheats who try to use a particular range of untested, but potentially enhancing, compounds.
In the past, tests have been developed once a drug is known to be in circulation. Now a German research team has developed tests for a class of drugs that they believe could be used in the near future.
On the face of it, the Beijing Olympics were remarkably drug free with only six athletes being caught during the games and three further suspect cases identified after the games closed. Rumours suggest that many athletes were in fact using performance-enhancing drugs that could not be detected using standard tests. One possibility is that some athletes were using compounds that have not yet been tested in humans, but have shown performance enhancing properties in animal trials. Because these compounds are in the early stage of development no test has been developed, so their use will go undetected.
A new test, announced in the launch issue of the new journal, Drug Testing and Analysis, will help sports officials stay one step ahead of the game by allowing them to screen for some of these emerging drugs, as well as others in the same class that have not yet reached the market.
The test detects a core chemical structure belonging to a class of compounds called benzothiazepines. These compounds stabilise protein channels that would otherwise "leak" calcium from muscle cells during strenuous exercise. Calcium is needed for muscle contraction and this "leaking" effect weakens the contractions and is a causal factor in muscle fatigue.
JTV-519 and S-107, benzothiazepines currently in development for the treatment of heart abnormalities, are known to increase endurance in mice. Although they have not yet entered human clinical trials, both can be detected using the test.
"As soon as these drugs enter human clinical trials, there is a huge potential for them to be misused in sports. This preventive research lets us prepare before these compounds are officially launched," says Mario Thevis, Director of the Center for Preventive Doping Research at the German Sport University of Cologne, Germany, who led the research.
The researchers think the simple nature of the compounds means they are easy to make and sell to drug cheats as endurance boosters on the black market.