Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1980 Jan;108(1):23-9.
doi: 10.1111/j.1748-1716.1980.tb06496.x.

The effect of divalent and trivalent cations on the sodium permeability of myelinated nerve fibres of Xenopus laevis

T Brismar

The effect of divalent and trivalent cations on the sodium permeability of myelinated nerve fibres of Xenopus laevis

T Brismar. Acta Physiol Scand. 1980 Jan.

Abstract

The effect of external Ca, Mg, Sr, Ba and La concentration was studied in potential clamp experiments on single myelinated nerve fibres of the frog (Xenopus laevis). An increase in cationic concentration caused a positive shift of the Na permeability (PNa) curve along the potential axis, a decrease in max. PNa and a decrease in the slope of the PNa curve. The effectiveness of Mg, Sr and Ba was similar and about 0.6 compared to that of Ca, whereas La was about 80 times more effective than Ca.

PubMed Disclaimer

LinkOut - more resources