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AD SYNAPTIC DEFICITS

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Functional and synaptic deficits in cerebral cortical neurons in Alzheimer s Dis...

Functional and synaptic deficits in cerebral cortical neurons in Alzheimer s Disease model mice Alzheimer’s disease (AD) is the most common neurodegenerative disease, affecting millions of people worldwide and therefore it is fundamental to understand its underlying mechanisms. Although the neuropathologies involved in AD ar... ver más

31/08/2011

BIU

45K€

Presupuesto del proyecto: 45K€

Líder del proyecto

BAR ILAN UNIVERSITY No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo FP7 notifico la concesión del proyecto el día 2011-08-31 No tenemos la información de la convocatoria

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Información adicional privada

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1 Participantes

BIU

0.00€ | Lider

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Líder del proyecto

BAR ILAN UNIVERSITY No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 45K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Alzheimer’s disease (AD) is the most common neurodegenerative disease, affecting millions of people worldwide and therefore it is fundamental to understand its underlying mechanisms. Although the neuropathologies involved in AD are well-described, the effect of those pathologies on neuronal function are poorly understood. Using a transgenic mouse model of AD that overexpresses human amyloid-beta (a-beta), we will study the effects of a-beta accumulation on neocortical synaptic function and receptive field organization using in vivo intracellular recording and in vivo 2-photon laser-scanning microscopy (2PLSM). We will measure the effect of soluble a-beta on individual synapses by imaging calcium dynamics in dendritic spines of somatosensory cortical neurons in response to whisker stimulation. Responses in transgenic animals will be compared to age-matched controls. This will measure the effects of a-beta on individual synapses in vivo. In addition, we will measure the neurotoxic effects of insoluble a-beta plaques on synaptic function by comparing the calcium dynamics in dendritic spines proximal to plaques to those distant from them. Finally, we will measure the effects of soluble a-beta and plaques on the receptive field organization of Layer II/III somatosensory cortical neurons to quantify the effects of the neuropathology on an intact neocortical network. This study will measure and differentiate between the effects of soluble a-beta and insoluble plaques on cortical function at several levels: at the level of the single synapse (calcium dynamics in dendritic spines), single neuron (electrophysiology of subthreshold inputs and spike outputs) and cortical network (receptive field organization) in the intact animal. This study will therefore fill a crucial gap between the molecular mechanisms of Alzheimer’s Disease and the symptoms of the disease, which are mediated by currently unknown neuronal events.

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