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How the brain stays receptive
Date:1/9/2013

ent that a further increase through the learning of new knowledge was no longer possible. The synaptic plasticity was thus extremely restricted. "The plasticity is essential for learning processes in the brain", Nora Prochnow explains. "It helps you to organise, keep or even to forget contents in a positive sense, to gain room for new inputs."

Autistic-like behaviour without Pannexin1

The absence of Pannexin1 also had an impact on behaviour: when solving simple problems, the animals were quickly overwhelmed in terms of content. Their spatial orientation was limited, their attention impaired and an increased probability for seizure generation occurred. "The behavioural patterns are reminiscent of autism. We should therefore consider the Pannexin1 channel more closely with regard to the treatment of such diseases", says the neurobiologist from Bochum.

Theory: feedback regulation gets out of hand without Pannexin1

According to the scientists' theory, nerve cells lack a feedback mechanism without Pannexin1. Normally the channel protein releases ATP, which binds to specific receptors and thus reduces the release of the neurotransmitter glutamate. Without Pannexin1 more glutamate is released, which leads to increased long-term potentiation. This causes the cell to lose its dynamic equilibrium, which is needed for an efficient learning process.


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Contact: Nora Prochnow
Nora.Prochnow@ruhr-uni-bochum.de
49-234-322-4406
Ruhr-University Bochum
Source:Eurekalert

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