Literature DB >> 2059657

Changes of the subsarcolemmal Na+ concentration in internally perfused cardiac cells.

F V Bielen1, H G Glitsch, F Verdonck.   

Abstract

Transients of Na+/K+ pump and of Na+/Ca2+ exchange current occur during whole-cell recording from cardiac cells upon quick changes of active Na+ efflux. The transients reflect a temporary loss of control of the subsarcolemmal Na+ concentration. Even in the steady state the control is not complete is certain cells. Quantitative studies on ion transport by whole-cell recording are meaningful only if an adequate control of the submembranal ionic composition is demonstrated.

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Year:  1991        PMID： 2059657     DOI： 10.1016/0005-2736(91)90239-5

Source DB:  PubMed          Journal:  Biochim Biophys Acta        ISSN： 0006-3002


  22 in total

1.  Na/K pump current and [Na](i) in rabbit ventricular myocytes: local [Na](i) depletion and Na buffering.

Authors:  Sanda Despa; Donald M Bers
Journal:  Biophys J       Date:  2003-06       Impact factor: 4.033

2.  Modulation of L-type calcium channels by sodium ions.

Authors:  C W Balke; W G Wier
Journal:  Proc Natl Acad Sci U S A       Date:  1992-05-15       Impact factor: 11.205

3.  Na/K pump-induced [Na](i) gradients in rat ventricular myocytes measured with two-photon microscopy.

Authors:  Sanda Despa; Jens Kockskämper; Lothar A Blatter; Donald M Bers
Journal:  Biophys J       Date:  2004-08       Impact factor: 4.033

4.  Activation of KATP channels by Na/K pump in isolated cardiac myocytes and giant membrane patches.

Authors:  A Y Kabakov
Journal:  Biophys J       Date:  1998-12       Impact factor: 4.033

5.  Amino acid substitutions in the rat Na+, K(+)-ATPase alpha 2-subunit alter the cation regulation of pump current expressed in HeLa cells.

Authors:  S Yamamoto; T A Kuntzweiler; E T Wallick; N Sperelakis; A Yatani
Journal:  J Physiol       Date:  1996-09-15       Impact factor: 5.182

6.  Interaction of the Na+-K+ pump and Na+-Ca2+ exchange via [Na+]i in a restricted space of guinea-pig ventricular cells.

Authors:  Y Fujioka; S Matsuoka; T Ban; A Noma
Journal:  J Physiol       Date:  1998-06-01       Impact factor: 5.182

7.  Intracellular citrate induces regenerative calcium release from sarcoplasmic reticulum in guinea-pig atrial myocytes.

Authors:  G Callewaert; K R Sipido; E Carmeliet; L Pott; P Lipp
Journal:  Pflugers Arch       Date:  1995-04       Impact factor: 3.657

8.  Na+ pump current-voltage relationships of rabbit cardiac Purkinje cells in Na(+)-free solution.

Authors:  F V Bielen; H G Glitsch; F Verdonck
Journal:  J Physiol       Date:  1993-06       Impact factor: 5.182

9.  Pipette GTP is essential for receptor-mediated regulation of Cl- current in dialysed myocytes from guinea-pig ventricle.

Authors:  M Horie; T C Hwang; D C Gadsby
Journal:  J Physiol       Date:  1992-09       Impact factor: 5.182

10.  Voltage dependence of ATP-dependent K+ current in rat cardiac myocytes is affected by IK1 and IK(ACh).

Authors:  Marie-Cécile Wellner-Kienitz; Kirsten Bender; Andreas Rinne; Lutz Pott
Journal:  J Physiol       Date:  2004-09-30       Impact factor: 5.182
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