Abstract
This chapter describes an ImageJ/Fiji automated macro approach to estimate synapse densities in 2D fluorescence confocal microscopy images. The main step-by-step imaging workflow is explained, including example macro language scripts that perform all steps automatically for multiple images. Such tool provides a straightforward method for exploratory synapse screenings where hundreds to thousands of images need to be analyzed in order to render significant statistical information. The method can be adapted to any particular set of images where fixed brain slices have been immunolabeled against validated presynaptic and postsynaptic markers.
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Acknowledgments
We are grateful to Juan Arranz for immunofluorescence experiments and Manel Bosch for useful advice on macro programming. MLA provided samples and biological input. JBF contributed the chromatic shift calculation macro. ER performed the imaging, designed and programmed the macro analysis pipeline, and wrote the paper. Images were acquired at the Molecular Imaging Platform IBMB (CSIC) with the support from the Spanish Ministry of Economy and Competitiveness and the European Regional Development Fund CSIC13-4E-2065.
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Rebollo, E., Boix-Fabrés, J., Arbones, M.L. (2019). Automated Macro Approach to Quantify Synapse Density in 2D Confocal Images from Fixed Immunolabeled Neural Tissue Sections. In: Rebollo, E., Bosch, M. (eds) Computer Optimized Microscopy. Methods in Molecular Biology, vol 2040. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-9686-5_5
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