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Blame it on the astrocytes
Date:7/11/2014

evelopment and repair, modulates other components responsible for normal brain function. In this study, the authors were able to show that TGF β1 triggers N-methyl-D-aspartate receptor (NMDA), a molecule controlling memory formation and maintenance through synaptic plasticity. In the study, the group also shows that TGF β1-induction of inhibitory synapses depends on activation of another molecule - Ca2+/calmodulin-dependent protein kinase II (CaMK2)-, which works as a mediator for learning and memory. "Our study is the first to associate this complex pathway of molecules, of which TGF β1 seems to be a key player, to astrocytes' ability to modulate inhibitory synapses", says Flvia Gomes.

The idea that the balance between excitatory and inhibitory inputs depends on astrocyte signals gains strong support with this new study and suggests a pivotal role for astrocytes in the development of neurological disorders involving impaired inhibitory synapse transmission. Knowing the players and mechanisms underlying inhibitory synapses may improve our understanding of synaptic plasticity and cognitive processes and may help develop new drugs for treating these diseases.


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Contact: Flávia Gomes
fgomes@icb.ufrj.br
55-219-980-22770
Publicase Comunicao Cientfica
Source:Eurekalert

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