Literature DB >> 2439983

A low threshold calcium current recorded at physiological Ca concentrations in single frog atrial cells.

R Bonvallet.   

Abstract

The presence of a low threshold calcium current (ICa,LT) besides the classical (high threshold) calcium current (ICa,HT) is investigated using the whole-cell patch-clamp technique (10) on Cs-loaded frog atrial cells at physiological Ca concentrations. ICa,LT, which inactivates within tens of milliseconds, gives rise to a shoulder in the negative part of the peak current-voltage curve. It is completely abolished by 40 microM Ni while ICa,HT is not modified. Cd (30 microM) decreases ICa,LT by about 50% while ICa,HT is completely abolished.

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Year:  1987        PMID： 2439983     DOI： 10.1007/bf00585084

Source DB:  PubMed          Journal:  Pflugers Arch        ISSN： 0031-6768            Impact factor:   3.657


  13 in total

1.  A novel type of cardiac calcium channel in ventricular cells.

Authors:  B Nilius; P Hess; J B Lansman; R W Tsien
Journal:  Nature       Date:  1985 Aug 1-7       Impact factor: 49.962

2.  Voltage clamp analysis of two inward current mechanisms in the egg cell membrane of a starfish.

Authors:  S Hagiwara; S Ozawa; O Sand
Journal:  J Gen Physiol       Date:  1975-05       Impact factor: 4.086

3.  Two distinct populations of calcium channels in a clonal line of pituitary cells.

Authors:  C M Armstrong; D R Matteson
Journal:  Science       Date:  1985-01-04       Impact factor: 47.728

4.  A low voltage-activated, fully inactivating Ca channel in vertebrate sensory neurones.

Authors:  E Carbone; H D Lux
Journal:  Nature       Date:  1984 Aug 9-15       Impact factor: 49.962

5.  Depolarization elicits two distinct calcium currents in vertebrate sensory neurones.

Authors:  J L Bossu; A Feltz; J M Thomann
Journal:  Pflugers Arch       Date:  1985-04       Impact factor: 3.657

6.  Evidence for two voltage-dependent calcium currents in the membrane of the ciliate Stylonychia.

Authors:  J W Deitmer
Journal:  J Physiol       Date:  1984-10       Impact factor: 5.182

7.  Improved patch-clamp techniques for high-resolution current recording from cells and cell-free membrane patches.

Authors:  O P Hamill; A Marty; E Neher; B Sakmann; F J Sigworth
Journal:  Pflugers Arch       Date:  1981-08       Impact factor: 3.657

8.  Two types of calcium channels in the somatic membrane of new-born rat dorsal root ganglion neurones.

Authors:  S A Fedulova; P G Kostyuk; N S Veselovsky
Journal:  J Physiol       Date:  1985-02       Impact factor: 5.182

9.  Studies of calcium channels in rat clonal pituitary cells with patch electrode voltage clamp.

Authors:  S Hagiwara; H Ohmori
Journal:  J Physiol       Date:  1982-10       Impact factor: 5.182

10.  Ionic currents in single isolated bullfrog atrial cells.

Authors:  J R Hume; W Giles
Journal:  J Gen Physiol       Date:  1983-02       Impact factor: 4.086
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  19 in total

Review 1.  Low-voltage-activated ("T-Type") calcium channels in review.

Authors:  Anne Marie R Yunker; Maureen W McEnery
Journal:  J Bioenerg Biomembr       Date:  2003-12       Impact factor: 2.945

Review 2.  Calcium channels in cellular membranes.

Authors:  P G Kostyuk
Journal:  J Mol Neurosci       Date:  1990       Impact factor: 3.444

3.  Analysis of the T-type calcium channel in embryonic chick ventricular myocytes.

Authors:  S Kawano; R L DeHaan
Journal:  J Membr Biol       Date:  1990-06       Impact factor: 1.843

4.  Low-voltage-activated calcium current in rat aorta smooth muscle cells in primary culture.

Authors:  N Akaike; H Kanaide; T Kuga; M Nakamura; J Sadoshima; H Tomoike
Journal:  J Physiol       Date:  1989-09       Impact factor: 5.182

5.  Kinetic properties of the cardiac T-type calcium channel in the guinea-pig.

Authors:  G Droogmans; B Nilius
Journal:  J Physiol       Date:  1989-12       Impact factor: 5.182

6.  Activation of an ATP-sensitive K+ current is promoted by internal GDP in frog atrial myocytes.

Authors:  R Pilsudski; O Rougier; Y Tourneur
Journal:  Pflugers Arch       Date:  1989       Impact factor: 3.657

7.  Evidence for two calcium currents in insulin-secreting cells.

Authors:  L S Satin; D L Cook
Journal:  Pflugers Arch       Date:  1988-04       Impact factor: 3.657

8.  Inactivation, reactivation and pacing dependence of calcium current in frog cardiocytes: correlation with current density.

Authors:  J A Argibay; R Fischmeister; H C Hartzell
Journal:  J Physiol       Date:  1988-07       Impact factor: 5.182

9.  The T-type Ca channel in guinea-pig ventricular myocytes is insensitive to isoproterenol.

Authors:  J Tytgat; B Nilius; J Vereecke; E Carmeliet
Journal:  Pflugers Arch       Date:  1988-06       Impact factor: 3.657

10.  Action of cromakalim on potassium membrane conductance in isolated heart myocytes of frog.

Authors:  R Pilsudski; O Rougier; Y Tourneur
Journal:  Br J Pharmacol       Date:  1990-07       Impact factor: 8.739
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