alexa Up-regulation of Connexin43 in the glial scar following photothrombotic ischemic injury.


Advancements in Genetic Engineering

Author(s): Haupt C, Witte OW, Frahm C

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Abstract Several types of CNS injury and various diseases are associated with the development of a glial scar. Astrocytes are major components of the glial scar. They are interconnected by gap junctions, with connexin43 (Cx43) being the most prominent channel protein. We applied a model of focal cerebral ischemia to study the spatio-temporal expression of glial fibrillary acidic protein, as well as of Cx43 mRNA and protein in gliotic tissue up to 60 days after injury. Reactive astrocytes enveloping the lesion up-regulated their Cx43 mRNA and protein. A band of reactive astrocytes filling in the lesion exhibited elevated Cx43 and showed a high degree of proliferation. Because of these findings, we hypothesize a role for Cx43 in glial scar formation, specifically in the proliferation of astrocytes. This article was published in Mol Cell Neurosci and referenced in Advancements in Genetic Engineering

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