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September 1, 1999The Journal of PhysiologyOpen Access

A novel cGMP‐regulated K+ channel in immortalized human kidney epithelial cells (IHKE‐1)

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Key result

A mammalian K+ channel in immortalized human kidney epithelial cells was directly inhibited by cGMP in a concentration-dependent manner, with a 34% reduction in open probability at 0.1 mM.

Population

Immortalized human kidney epithelial cells (IHKE-1)

Comparison

Application of K+ channel blockers and regulators vs Baseline/control conditions

Design

Preclinical

Authors

JHJochen R. HirschGWGuy WeberIKI. Kleta

Discussion

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Overview

Preclinical data preclude clinical application; leaves open cGMP regulation of renal K+ channels in vivo.

Structured PICO

P
Population
Immortalized human kidney epithelial cells (IHKE-1)
I
Intervention
Application of K+ channel blockers (Ba2+, TEA+, verapamil, charybdotoxin) and regulators (ANP, BNP, CNP, cGMP)
C
Comparator
Baseline/control conditions
O
Outcome
Open probability (Po) and conductance of the K+ channelsurrogate

This study provides the first electrophysiological characterization of a mammalian K+ channel that is directly regulated by cGMP in human kidney epithelial cells.

Cite This Study

Hirsch et al. (1999) studied Immortalized human kidney epithelial cells (IHKE-1). cGMP was evaluated on Open probability (Po) of the K+ channel. A mammalian K+ channel in immortalized human kidney epithelial cells was directly inhibited by cGMP in a concentration-dependent manner, with a 34% reduction in open probability at 0.1 mM.

synapsesocial.com/papers/6a8b24fde0eb9e4bd4f4446fhttps://doi.org/10.1111/j.1469-7793.1999.0645n.x
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1cGMP-Dependent and -Independent Inhibition of a K+ Conductance by Natriuretic Peptides1999 · 44 citations
  2. 2SYMPOSIUM: Experimental Biology 1995 Role of Mesangial Cell Ion Transport in Glomerular Physiology and Disease: PHYSIOLOGICAL ROLE OF LARGE, Ca2+‐ACTIVATED K+CHANNELS IN HUMAN GLOMERULAR MESANGIAL CELLS1996 · 37 citations
  3. 3Inhibition of proximal tubular fluid absorption by nitric oxide and atrial natriuretic peptide in rat kidney1998 · 94 citations
  4. 4Role of large Ca(2+)-activated K+ channels in regulation of mesangial contraction by nitroprusside and ANP1996 · 47 citations
  5. 5Atrial natriuretic peptide enhances activity of potassium conductance in adrenal glomerulosa cells1994 · 44 citations