Voltage-dependent ion channels in the mouse RPE: comparison with Norrie disease mice

Research output: Contribution to journalResearch articleContributedpeer-review


  • Guido Wollmann - , Charité – Universitätsmedizin Berlin, Yale University (Author)
  • Steffen Lenzner - (Author)
  • Wolfgang Berger - (Author)
  • Rita Rosenthal - (Author)
  • Mike O Karl - , Chair of Retinal Development and Regeneration, University Hospital Hamburg Eppendorf (Author)
  • Olaf Strauss - (Author)


We studied electrophysiological properties of cultured retinal pigment epithelial (RPE) cells from mouse and a mouse model for Norrie disease. Wild-type RPE cells revealed the expression of ion channels known from other species: delayed-rectifier K(+) channels composed of Kv1.3 subunits, inward rectifier K(+) channels, Ca(V)1.3 L-type Ca(2+) channels and outwardly rectifying Cl(-) channels. Expression pattern and the ion channel characteristics current density, blocker sensitivity, kinetics and voltage-dependence were compared in cells from wild-type and Norrie mice. Although no significant differences were observed, our study provides a base for future studies on ion channel function and dysfunction in transgenic mouse models.


Original languageEnglish
Pages (from-to)688-98
Number of pages11
JournalVision Research
Issue number5
Publication statusPublished - Mar 2006

External IDs

Scopus 29144487043
ORCID /0000-0002-0926-6556/work/150884376



  • Animals, Blotting, Western, Calcium Channels, L-Type/metabolism, Cells, Cultured, Chloride Channels/metabolism, Disease Models, Animal, Eye Diseases, Hereditary/metabolism, Genetic Diseases, X-Linked/metabolism, Ion Channels/metabolism, Kv1.3 Potassium Channel/metabolism, Membrane Potentials, Mice, Mice, Knockout, Patch-Clamp Techniques, Pigment Epithelium of Eye/metabolism, Potassium Channels, Inwardly Rectifying/metabolism