Home > Publications Database > Induced Overexpression of Connexin43 in Astrocytes Attenuates the Progression of Experimental Temporal Lobe Epilepsy. > print

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005     20251008102356.0
024 7 _ |a 10.1007/s11064-025-04558-w
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037 _ _ |a DZNE-2025-01093
041 _ _ |a English
082 _ _ |a 610
100 1 _ |a Kherbouche, Oussama
|b 0
245 _ _ |a Induced Overexpression of Connexin43 in Astrocytes Attenuates the Progression of Experimental Temporal Lobe Epilepsy.
260 _ _ |a Dordrecht [u.a.]
|c 2025
|b Springer Science + Business Media B.V
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520 _ _ |a Astrocytic gap junctional communication plays a critical role in regulating neuronal activity and network synchronization, yet its precise contributions to brain function and the pathogenesis of neurological disorders remains incompletely understood. To address this, we generated a transgenic mouse line with inducible, astrocyte-specific overexpression of the gap junction protein connexin43 (Cx43). In these mice, hippocampal astrocytes exhibited markedly elevated Cx43 protein levels and a ~ 20% increase in intercellular gap junction coupling. Enhanced coupling was accompanied by a reduction in astrocytic cell volume and branching, without affecting passive membrane properties or astrocyte density in the hippocampus. Cx43 overexpression had no detectable impact on adult neurogenesis in the dentate gyrus, nor did it alter hippocampal synaptic efficacy or plasticity. Notably, in a mouse model of temporal lobe epilepsy with hippocampal sclerosis, astrocytic Cx43 overexpression attenuated chronic epileptic activity and the extent of sclerosis, supporting an antiepileptic role of the astroglial network. Collectively, these findings enhance our understanding of the functional relevance of astrocytic gap junction coupling in health and disease, with potential implications for the design of new treatment strategies.
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650 _ 7 |a Connexin 43
|2 Other
650 _ 7 |a EEG
|2 Other
650 _ 7 |a Electrophysiology
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650 _ 7 |a Gap junction coupling
|2 Other
650 _ 7 |a Hippocampal sclerosis
|2 Other
650 _ 7 |a Temporal lobe epilepsy
|2 Other
650 _ 7 |a Connexin 43
|2 NLM Chemicals
650 _ 2 |a Animals
|2 MeSH
650 _ 2 |a Astrocytes: metabolism
|2 MeSH
650 _ 2 |a Connexin 43: biosynthesis
|2 MeSH
650 _ 2 |a Connexin 43: genetics
|2 MeSH
650 _ 2 |a Epilepsy, Temporal Lobe: metabolism
|2 MeSH
650 _ 2 |a Epilepsy, Temporal Lobe: pathology
|2 MeSH
650 _ 2 |a Mice, Transgenic
|2 MeSH
650 _ 2 |a Mice
|2 MeSH
650 _ 2 |a Disease Progression
|2 MeSH
650 _ 2 |a Hippocampus: metabolism
|2 MeSH
650 _ 2 |a Hippocampus: pathology
|2 MeSH
650 _ 2 |a Mice, Inbred C57BL
|2 MeSH
650 _ 2 |a Gap Junctions: metabolism
|2 MeSH
650 _ 2 |a Male
|2 MeSH
700 1 _ |a Henning, Lukas
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700 1 _ |a Niemann, Pia
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700 1 _ |a Geisen, Caroline
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700 1 _ |a Seifert, Gerald
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700 1 _ |a Henneberger, Christian
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700 1 _ |a Fleischmann, Bernd K
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700 1 _ |a Steinhäuser, Christian
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700 1 _ |a Bedner, Peter
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773 _ _ |a 10.1007/s11064-025-04558-w
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856 4 _ |y OpenAccess
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