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Lithium Restores Cognitive Function in Down Syndrome Mice


 

ScienceDaily (Dec. 3, 2012) -- Researchers report that lithium, a drug commonly used for the treatment of mood disorders in humans, restores neurogenesis in the hippocampus, a part of the brain strongly associated with learning and memory.

Down syndrome is a neurodevelopmental disorder that is the leading cause of genetically defined intellectual disability. In the brain, Down syndrome results in alterations in the connections between neurons and a reduction in the development of new neurons (neurogenesis) that usually occurs during learning.

In a new study, researchers led by Laura Gasparini at the Istituto Italiano di Tecnologia in Genova, Italy report that lithium restores neurogenesis in the hippocampus. Lithium also significantly improved the performance of Down syndrome mice in tasks measuring contextual learning, spatial memory, and object discrimination.

These results suggest that lithium-based therapies may help Down syndrome patients.