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Early detection and monitoring of cerebral ischemia using calcium-responsive MRI probes

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Savić,  T
Research Group MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Gambino,  G
Research Group MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Bokharaie,  VS
Research Group Neuronal Convergence, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Noori,  HR
Research Group Neuronal Convergence, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Logothetis,  NK
Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Angelovski,  G
Research Group MR Neuroimaging Agents, Max Planck Institute for Biological Cybernetics, Max Planck Society;
Max Planck Institute for Biological Cybernetics, Max Planck Society;

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Citation

Savić, T., Gambino, G., Bokharaie, V., Noori, H., Logothetis, N., & Angelovski, G. (2019). Early detection and monitoring of cerebral ischemia using calcium-responsive MRI probes. Proceedings of the National Academy of Sciences of the United States of America, 116(41), 20666-20671. doi:10.1073/pnas.1908503116.


Cite as: http://hdl.handle.net/21.11116/0000-0004-BECE-F
Abstract
Cerebral ischemia is one of the leading causes of mortality and disability in infants and adults and its timely diagnosis is essential for an efficient treatment. We present a methodology for fast detection and real-time monitoring of fluctuations of calcium ions associated with focal ischemia using a molecular functional MRI approach. We used a dinuclear paramagnetic gadolinium(III) complex chelate that changes MR image contrast through its reversible interaction with extracellular calcium ions, while applying a remote transient middle cerebral artery occlusion as a model for ischemic stroke. Our method sensitively recognizes the onset and follows the dynamics of the ischemic core and penumbra with submillimeter spatial and second-scale temporal resolution, thus paving the way for noninvasive monitoring and development of targeted treatment strategies for cerebral ischemia.