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Protein kinase C enhances the rapidly activating delayed rectifier potassium current, IKr, through a reduction in C-type inactivation in guinea-pig ventricular myocytes.

Abstract:

1. The rapidly activating delayed rectifier potassium current, IKr, was studied in guinea-pig ventricular myocytes in the presence of thiopentone, which blocks the more slowly activating component of the delayed rectifier potassium current, IKs, and using whole cell perforated patch clamp or switched voltage clamp with sharp electrodes to minimise intracellular dialysis. 2. Activation of protein kinase A (PKA) by isoprenaline or forskolin caused an increase in IKr tail currents. Following a 3...

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Publication status:
Published

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Institution:
University of Oxford
Department:
Oxford, MSD, Pharmacology, BHF Centre of Research Excellence
Journal:
The Journal of physiology
Volume:
522 Pt 3
Issue:
3
Pages:
391-402
Publication date:
2000-02-05
DOI:
EISSN:
1469-7793
ISSN:
0022-3751
URN:
uuid:278576a8-cfcb-47fa-aaaf-74fddc58debb
Source identifiers:
106339
Local pid:
pubs:106339

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