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Saturday, 14 September 2013

Ability to Erase Bad Memories Takes a Step Closer to Reality

While erasing bad memories may currently belong to the realm of sci-fi movies, it has now taken a step closer to reality after researchers showed that they were able to erase dangerous drug-associated memories in mice and rats.In the new study, the scientists inhibited actin polymerization - the creation of large chainlike molecules - by blocking a molecular motor called myosin II in the brains of mice and rats during the maintenance phase of methamphetamine-related memory formation. 
Behavioural tests showed the animals immediately and persistently lost memories associated with methamphetamine-with no other memories affected. 
In the tests, animals were trained to associate the rewarding effects of methamphetamine with a rich context of visual, tactile and scent cues. 
When injected with the inhibitor many days later in their home environment, they later showed a complete lack of interest when they encountered drug-associated cues. At the same time, the response to other memories, such as food rewards, was unaffected. 
The study has been published online in the journal Biological Psychiatry.
Source-ANI


 



 

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