Macrocurrents of voltage gated Na+ and K+ channels from the crayfish stretch receptor neuronal soma.

Abstract:

:Currents from the slowly adapting stretch receptor neuron of the crayfish (Pacifastacus leniusculus) were studied in a cell attached configuration using patch pipettes with an opening diameter of 2-10 microm. The neuronal membrane was enzymatically freed from the glial layer. The voltage gated Na+ and K+ channels seemed to be more concentrated in the lower part of soma close to the axon hillock. The Na+ and K+ currents could be analysed by fitting the currents to a fourth-order exponential function for Na+ current and a second-order exponential function for the K+ current. The macropatch recordings of enzymatically treated neurons are superior to two electrode voltage clamp recordings when analyzing voltage gated Na+ and K+ currents.

journal_name

Neuroreport

journal_title

Neuroreport

authors

Lin JH,Sand P,Rydqvist B

doi

10.1097/00001756-199908200-00013

subject

Has Abstract

pub_date

1999-08-20 00:00:00

pages

2503-7

issue

12

eissn

0959-4965

issn

1473-558X

journal_volume

10

pub_type

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