Australasian Science: Australia's authority on science since 1938

Party Drug Lights Up Rodent Brains

By Stephen Luntz

The effects on rats of mephedrone, better known as the party drug meow meow, indicate that for once the hype about a drug’s addictive effects might be accurate.

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University of Sydney PhD student Craig Motbey used protein tracking to determine the parts of the rat brain activated by mephedrone. “When you look at the pattern of neurons activated by the mephedrone, it is as if the effect of ecstasy and the effect of methamphetamine on the brain’s neurons had been laid on top of each other,” he says.

“The findings confirm the anecdotal reports from mephedrone users that the drug combines the euphoric, sociable effects of ecstasy with an addictive hook comparable to drugs such as that

Users report meow meow, unlike ecstasy, stimulates a desire for a new dose within an hour. Motbey says that “surveys taken in the UK, where the drug has been widespread for longer, indicate that almost half of users consider it at least as addictive as cocaine”.

Motbey’s rodents seem to agree, seeking further doses frequently. However, Motbey says: “We didn’t notice any withdrawal symptoms once the drug was taken away, although that wasn’t something we were particularly looking for”.

Chemically mephedrone is similar to the amphetamine family, although its closest amphetamine relative is unknown as a recreational drug. Motbey says the similarities to ecstasy, that it is “pro-social and makes touch feel nice”, are chemically more of a coincidence, and the effects are very different from taking an ecstasy/amphetamine combination....

The full text of this article can be purchased from Informit.