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New Drug Helps to Dampen Bad Memories
wile_e_wonka writes to tell us Researchers at Harvard and the Montreal-based McGill University are working on a drug that would allow psychiatrists to dampen painful memories in their patients when combined with therapy. "They treated 19 accident or rape victims for ten days, during which the patients were asked to describe their memories of the traumatic event that had happened 10 years earlier. Some patients were given the drug, which is also used to treat amnesia, while others were given a placebo. A week later, they found that patients given the drug showed fewer signs of stress when recalling their trauma."
It's not a new drug that was tried by Harvard and McGill, it was an old favorite, propranolol. This is a nonselective beta blocker that has anti-adrenaline actions (oversimplifying radically) in the CNS as well as across the body, and it's used for a dozen purposes other than this one. This was actually fascinating research, because they're basically using an old standby drug to help desensitize certain traumatic memories. There was no assertion in the original article (other than the Star Trek pandering at the end) that the memories were eliminated entirely, although eliminating emotional tags to memories would have the side effect of making them harder to recall.
We know that the beta blockers have significant mood and activity side effects. In fact it's a common limitation on their use. In this case, though, it looks like the researchers are capitalizing on these side effects to make people's handling of trauma better. Cool. This is a use that will probably see more significant human clinical trials in the short run. Propranolol is a very cheap and very well-understood medication.
In the case of the rat studies with the actual new drug, it's early but interesting work that might or might not have human implication in the future. I'll be nervous about it without a lot more research, and I suspect that the greater degree of wiring in the human brain and the relative resilience of memory are going to be harder nuts to crack, at least in the short term.