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Human Gene Affects Memory

 
  January, 28 2003 3:58
your information resource in human molecular genetics
 
     
NIH scientists have shown that a common gene variant influences memory for events in humans by altering a growth factor in the brain's memory hub. On average, people with a particular version of the gene that codes for brain derived neurotrophic factor (BDNF) performed worse on tests of episodic memory — tasks like recalling what happened yesterday. They also showed differences in activation of the hippocampus, a brain area known to mediate memory, and signs of decreased neuronal health and interconnections. These effects are likely traceable to limited movement and secretion of BDNF within cells, according to the study, which reveals how a gene affects the normal range of human memory, and confirms that BDNF affects human hippocampal function much as it does animals'.

CONTACTS:
Jules Asher, NIMH press office
(301) 443-4536

Robert Bock, NICHD press office
(301) 496-5133


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