Journal article
A variant of KCC2 from patients with febrile seizures impairs neuronal Cl- extrusion and dendritic spine formation.
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Puskarjov M
Department of Biosciences, University of Helsinki, Helsinki, Finland Neuroscience Center, University of Helsinki, Helsinki, Finland.
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Seja P
Department of Biosciences, University of Helsinki, Helsinki, Finland Neuroscience Center, University of Helsinki, Helsinki, Finland.
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Heron SE
Epilepsy Research Program, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia Sansom Institute for Health Research, University of South Australia, Adelaide SA, Australia.
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Williams TC
Epilepsy Research Program, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia.
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Ahmad F
Department of Biosciences, University of Helsinki, Helsinki, Finland Neuroscience Center, University of Helsinki, Helsinki, Finland.
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Iona X
Epilepsy Research Program, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia.
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Oliver KL
Department of Medicine, Epilepsy Research Center, The University of Melbourne Austin Health, Melbourne Vic., Australia.
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Grinton BE
Department of Paediatrics, Florey Institute, Royal Children's Hospital The University of Melbourne, Melbourne, Vic., Australia.
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Vutskits L
Department of Anesthesiology, Pharmacology and Intensive Care, University Hospital of Geneva, Geneva, Switzerland.
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Scheffer IE
Department of Medicine, Epilepsy Research Center, The University of Melbourne Austin Health, Melbourne Vic., Australia Department of Paediatrics, Florey Institute, Royal Children's Hospital The University of Melbourne, Melbourne, Vic., Australia.
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Petrou S
Florey Institute of Neuroscience and Mental Health and the Center for Neural Engineering, The University of Melbourne, Parkville, Vic., Australia.
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Blaesse P
Department of Biosciences, University of Helsinki, Helsinki, Finland Institute of Physiology I, Westfälische Wilhelms-University Münster, Münster, Germany.
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Dibbens LM
Epilepsy Research Program, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, SA, Australia Sansom Institute for Health Research, University of South Australia, Adelaide SA, Australia.
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Berkovic SF
Department of Medicine, Epilepsy Research Center, The University of Melbourne Austin Health, Melbourne Vic., Australia.
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Kaila K
Department of Biosciences, University of Helsinki, Helsinki, Finland Neuroscience Center, University of Helsinki, Helsinki, Finland Kai.Kaila@Helsinki.fi.
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English
Genetic variation in SLC12A5 which encodes KCC2, the neuron-specific cation-chloride cotransporter that is essential for hyperpolarizing GABAergic signaling and formation of cortical dendritic spines, has not been reported in human disease. Screening of SLC12A5 revealed a co-segregating variant (KCC2-R952H) in an Australian family with febrile seizures. We show that KCC2-R952H reduces neuronal Cl(-) extrusion and has a compromised ability to induce dendritic spines in vivo and in vitro. Biochemical analyses indicate a reduced surface expression of KCC2-R952H which likely contributes to the functional deficits. Our data suggest that KCC2-R952H is a bona fide susceptibility variant for febrile seizures.
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Language
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Open access status
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hybrid
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Persistent URL
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https://sonar.ch/global/documents/171011
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