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Published in: EJNMMI Research 1/2013

Open Access 01-12-2013 | Original research

Cortical florbetapir-PET amyloid load in prodromal Alzheimer’s disease patients

Authors: Laure Saint-Aubert, Emmanuel J Barbeau, Patrice Péran, Federico Nemmi, Celine Vervueren, Helene Mirabel, Pierre Payoux, Anne Hitzel, Fabrice Bonneville, Raluca Gramada, Mathieu Tafani, Christian Vincent, Michele Puel, Sophie Dechaumont, Francois Chollet, Jeremie Pariente

Published in: EJNMMI Research | Issue 1/2013

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Abstract

Background

Florbetapir (AV-45) has been shown to be a reliable tool to assess amyloid load in patients with Alzheimer's disease (AD) at demential stages. Longitudinal studies also suggest that AV-45 has the ability to bind amyloid in the early stages of AD. In this study, we investigated AV-45 binding and its relation with cognitive performance in a group of patients at the prodromal stage of Alzheimer's disease, recruited according to strict inclusion criteria.

Methods

We recruited patients at the prodromal stage of AD and matched control subjects. AV-45 binding was assessed using an innovative extraction method allowing quantifying uptake in the cortex only. AV-45 uptake was compared between groups in the precuneus, posterior cingulate, anterior cingulate, and orbito-frontal regions. Correlations between AV-45 uptake and cognitive performance were assessed.

Results

Twenty-two patients and 17 matched control subjects were included in the study. We report a significant increase of cortical AV-45 uptake in the patients compared to the control subjects in all regions of interest. Specific correlations were found within the patient group between mean global amyloid cortical load and cognitive performance in three different memory tests.

Conclusions

These findings suggest that at the prodromal stage of AD, memory decline is linked to an increase of cortical β-amyloid load.
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Metadata
Title
Cortical florbetapir-PET amyloid load in prodromal Alzheimer’s disease patients
Authors
Laure Saint-Aubert
Emmanuel J Barbeau
Patrice Péran
Federico Nemmi
Celine Vervueren
Helene Mirabel
Pierre Payoux
Anne Hitzel
Fabrice Bonneville
Raluca Gramada
Mathieu Tafani
Christian Vincent
Michele Puel
Sophie Dechaumont
Francois Chollet
Jeremie Pariente
Publication date
01-12-2013
Publisher
Springer Berlin Heidelberg
Published in
EJNMMI Research / Issue 1/2013
Electronic ISSN: 2191-219X
DOI
https://doi.org/10.1186/2191-219X-3-43

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