Carsten Pfeffer

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K-Cl co-transporters are encoded by four homologous genes and may have roles in transepithelial transport and in the regulation of cell volume and cytoplasmic chloride. KCC3, an isoform mutated in the human Anderman syndrome, is expressed in brain, epithelia and other tissues. To investigate the physiological functions of KCC3, we disrupted its gene in(More)
A systematic analysis of the Drosophila genome data reveals the existence of pHCl, a novel member of ligand-gated ion channel subunits. pHCl shows nearly identical similarity to glutamate-, glycine-, and histamine-gated ion channels, does however not belong to any of these ion channel types. We identified three different sites, where splicing generates(More)
A high intracellular chloride concentration in immature neurons leads to a depolarizing action of GABA that is thought to shape the developing neuronal network. We show that GABA-triggered depolarization and Ca2+ transients were attenuated in mice deficient for the Na-K-2Cl cotransporter NKCC1. Correlated Ca2+ transients and giant depolarizing potentials(More)
The neurodegenerative disorder Andermann syndrome is caused by mutations of the K-Cl cotransporter KCC3. Mice with a targeted disruption of the corresponding gene, Slc12a6, reproduce neurodegeneration of the peripheral and central nervous system (CNS) and display arterial hypertension. Kcc3 is expressed in numerous tissues, including the CNS and vascular(More)
Synaptic inhibition in the olfactory bulb (OB), the first relay station of olfactory information, is believed to be important for odour discrimination. We interfered with GABAergic inhibition of mitral and tufted cells (M/T cells), the principal neurons of the OB, by disrupting their potassium-chloride cotransporter 2 (Kcc2). Roughly, 70% of mice died(More)
Carsten K. Pfeffer,1,2 Valentin Stein,3 Damien J. Keating,2 Hannes Maier,4 Ilka Rinke,3 York Rudhard,2 Moritz Hentschke,5 Gabriele M. Rune,6 Thomas J. Jentsch,1,2 and Christian A. Hübner2,5,7 1Max Delbrück Centrum für Molekulare Medizin (MDC) and Leibniz Institut für Molekulare Pharmakologie (FMP), D-13125 Berlin, Germany, 2Zentrum für Molekulare(More)
class BinaryTree<T>: + abstract height() class Branch<T> inherits BinaryTree: BinaryTree<T> left T value BinaryTree<T> right + initializer(BinaryTree<T> left, T value, BinaryTree<T> right): self.left = left self.value = value self.right = right + height(): return 1+max(self.left.height(), self.right.height) class Leaf<T> inherits BinaryTree: + height():(More)
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