Abstract
The central nervous system (CNS) is highly sensitive to external mechanical damage, presenting a limited capacity for regeneration explained in part by its inability to restore either damaged neurons or the synaptic network. The CNS may suffer different types of external injuries affecting its function and/or structure, including stroke, spinal cord injury, and traumatic brain injury. These pathologies critically affect the quality of life of a large number of patients worldwide and are often fatal because available therapeutics are ineffective and produce limited results. Common effects of the mentioned pathologies involves the triggering of several cellular and metabolic responses against injury, including infiltration of blood cells, inflammation, glial activation, and neuronal death. Although some of the underlying molecular mechanisms of those responses have been elucidated, the mechanisms driving these processes are poorly understood in the context of CNS injury. In the last few years, it has been suggested that the activation of the Wnt signaling pathway could be important in the regenerative response after CNS injury, activating diverse protective mechanisms including the stimulation of neurogenesis, blood brain structure consolidation and the recovery of cognitive brain functions. Because Wnt signaling is involved in several physiological processes, the putative positive role of its activation after injury could be the basis for novel therapeutic approaches to CNS injury.
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Acknowledgments
This work was supported by grants from the Basal Center for Excellence in Science and Technology (Conicyt-PFB 12/2007) and from Fondecyt: to NCI (N° 1120156) to CL (postdoctoral fellowships N°3150291) and PC (postdoctoral fellowships N°3150475). We also thank the Sociedad Química y Minera de Chile (SQM) for special grants to study “The role of potassium in hypertension and cognition” and “The role of lithium in human health". We also thank Felipe G. Serrano for artwork (www.illustrative-science.com).
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The authors declare that they have no conflict of interests.
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Lambert, C., Cisternas, P. & Inestrosa, N.C. Role of Wnt Signaling in Central Nervous System Injury. Mol Neurobiol 53, 2297–2311 (2016). https://doi.org/10.1007/s12035-015-9138-x
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DOI: https://doi.org/10.1007/s12035-015-9138-x