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• W2898845674 abstract "Endothelial cells perform a wide variety of fundamental functions for the cardiovascular system, their proliferation and migration being strongly regulated by their intracellular calcium concentration. Hence it is extremely important to carefully measure endothelial calcium signals under different stimuli. A proposal to automate the intracellular calcium profiles extraction from fluorescence image sequences is presented. Digital image processing techniques were combined with a multi-target tracking approach supported by Kalman estimation. The system was tested with image sequences from two different stimuli. The first one was a chemical stimulus, that is, ATP, which caused small movements in the cells trajectories, thereby suggesting that the bath application of the agonist does not generate significant artifacts. The second one was a mechanical stimulus delivered by a glass microelectrode, which caused major changes in cell trajectories. The importance of the tracking block is evidenced since more accurate profiles were extracted, mainly for cells closest to the stimulated area. Two important contributions of this work are the automatic relocation of the region of interest assigned to the cells and the possibility of data extraction from big image sets in efficient and expedite way. The system may adapt to different kind of cell images and may allow the extraction of other useful features." @default.
• W2898845674 created "2018-11-09" @default.
• W2898845674 creator A5026120374 @default.
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• W2898845674 date "2018-11-02" @default.
• W2898845674 modified "2023-09-27" @default.
• W2898845674 title "Automated Intracellular Calcium Profiles Extraction from Endothelial Cells Using Digital Fluorescence Images" @default.
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• W2898845674 doi "https://doi.org/10.3390/ijms19113440" @default.
• W2898845674 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6274978" @default.
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• W2898845674 hasPublicationYear "2018" @default.
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