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Published in: Brain Structure and Function 4/2017

Open Access 01-05-2017 | Methods Paper

Employing an open-source tool to assess astrocyte tridimensional structure

Authors: Gabriela Tavares, Manuella Martins, Joana Sofia Correia, Vanessa Morais Sardinha, Sónia Guerra-Gomes, Sofia Pereira das Neves, Fernanda Marques, Nuno Sousa, João Filipe Oliveira

Published in: Brain Structure and Function | Issue 4/2017

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Abstract

Astrocytes display important features that allow them to maintain a close dialog with neurons, ultimately impacting brain function. The complex morphological structure of astrocytes is crucial to the role of astrocytes in brain networks. Therefore, assessing morphologic features of astrocytes will help provide insights into their physiological relevance in healthy and pathological conditions. Currently available tools that allow the tridimensional reconstruction of astrocytes present a number of disadvantages, including the need for advanced computational skills and powerful hardware, and are either time-consuming or costly. In this study, we optimized and validated the FIJI-ImageJ, Simple Neurite Tracer (SNT) plugin, an open-source software that aids in the reconstruction of GFAP-stained structure of astrocytes. We describe (1) the loading of confocal microscopy Z-stacks, (2) the selection criteria, (3) the reconstruction process, and (4) the post-reconstruction analysis of morphological features (process length, number, thickness, and arbor complexity). SNT allows the quantification of astrocyte morphometric parameters in a simple, efficient, and semi-automated manner. While SNT is simple to learn, and does not require advanced computational skills, it provides reproducible results, in different brain regions or pathophysiological states.
Literature
go back to reference Bushong EA, Martone ME, Jones YZ, Ellisman MH (2002) Protoplasmic astrocytes in CA1 stratum radiatum occupy separate anatomical domains. J Neurosci 22:183–192PubMed Bushong EA, Martone ME, Jones YZ, Ellisman MH (2002) Protoplasmic astrocytes in CA1 stratum radiatum occupy separate anatomical domains. J Neurosci 22:183–192PubMed
go back to reference Paxinos VG, Watson C (2005) The rat brain in stereotaxic coordinates, 5th edn. Academic Press, New York Paxinos VG, Watson C (2005) The rat brain in stereotaxic coordinates, 5th edn. Academic Press, New York
Metadata
Title
Employing an open-source tool to assess astrocyte tridimensional structure
Authors
Gabriela Tavares
Manuella Martins
Joana Sofia Correia
Vanessa Morais Sardinha
Sónia Guerra-Gomes
Sofia Pereira das Neves
Fernanda Marques
Nuno Sousa
João Filipe Oliveira
Publication date
01-05-2017
Publisher
Springer Berlin Heidelberg
Published in
Brain Structure and Function / Issue 4/2017
Print ISSN: 1863-2653
Electronic ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-016-1316-8

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