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ISSN 2522-9028 (Print)
ISSN 2522-9036 (Online)
DOI: https://doi.org/10.15407/fz

Fiziologichnyi Zhurnal

(English title: Physiological Journal)

is a scientific journal issued by the

Bogomoletz Institute of Physiology
National Academy of Sciences of Ukraine

Editor-in-chief: V.F. Sagach

The journal was founded in 1955 as
1955 – 1977 "Fiziolohichnyi zhurnal" (ISSN 0015 – 3311)
1978 – 1993 "Fiziologicheskii zhurnal" (ISSN 0201 – 8489)
1994 – 2016 "Fiziolohichnyi zhurnal" (ISSN 0201 – 8489)
2017 – "Fiziolohichnyi zhurnal" (ISSN 2522-9028)

Fiziol. Zh. 2016; 62(6): 3-8

SINGLE-CHANNEL ION CURRENTS IN THE NUCLEAR ENVELOPE OF RAT CARDIOMYOCYTES

O.A. Kotyk, A.B. Kotliarova, A.O. Polishchuk, S.M. Marchenko

    O.O. Bogomoletz Institute of Physiology National Academy of Sciences of Ukraine, Kyiv
DOI: https://doi.org/10.15407/fz62.06.003


Abstract

Using the patch clamp technique in nucleus attached configuration we have found that the nuclear membrane of rat cardiomyocytes contains different types of ion channels with conductances in the range from 10 to 400 pS. In particular, we recorded inositol 1,4,5-trisphosphate receptors with conductance of 384 ± 5 pS and 209 ± 13 pS cation channels similar to LCC-channels, previously reported in neurons. In addition, we found at least two types of ion channels with significantly higher conductance than that of LCC-channels and several types of ion channels with lower conductance (10-90 pS).

Keywords: ion channels; nuclear envelope; cardiomyocytes; Ca2+-signalling; inositol 1,4,5-trisphosphate receptors.

Full text: (PDF, in Ukrainian)

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