Literature DB >> 3780943

Excitation-contraction coupling in the myocardium of hibernating chipmunks.

N Kondo.   

Abstract

In the myocardium of nonhibernating chipmunks, replacing external Ca by Sr markedly prolongs the action potential plateau with an increase in contraction, while in preparations from hibernating animals this procedure inhibits both responses. Pretreatment with 4-aminopyridine causes a prolongation of the action potential plateau by Sr in hibernating animals.

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Year:  1986        PMID： 3780943     DOI： 10.1007/bf01946394

Source DB:  PubMed          Journal:  Experientia        ISSN： 0014-4754


  18 in total

Review 1.  The generation of electric currents in cardiac fibers by Na/Ca exchange.

Authors:  L J Mullins
Journal:  Am J Physiol       Date:  1979-03

2.  Sr action potentials in cardiac Purkynĕ fibres. I. Evidence for a regenerative increase in Sr conductance.

Authors:  J Vereecke; E Carmeliet
Journal:  Pflugers Arch       Date:  1971       Impact factor: 3.657

3.  Inward current channels activated by intracellular Ca in cultured cardiac cells.

Authors:  D Colquhoun; E Neher; H Reuter; C F Stevens
Journal:  Nature       Date:  1981-12-24       Impact factor: 49.962

4.  Role of calcium ions in transient inward currents and aftercontractions induced by strophanthidin in cardiac Purkinje fibres.

Authors:  R S Kass; W J Lederer; R W Tsien; R Weingart
Journal:  J Physiol       Date:  1978-08       Impact factor: 5.182

5.  Transient inward current underlying arrhythmogenic effects of cardiotonic steroids in Purkinje fibres.

Authors:  W J Lederer; R W Tsien
Journal:  J Physiol       Date:  1976-12       Impact factor: 5.182

6.  Calcium entry leads to inactivation of calcium channel in Paramecium.

Authors:  P Brehm; R Eckert
Journal:  Science       Date:  1978-12-15       Impact factor: 47.728

7.  Effects of synthesized phosphodiesterase inhibitors, DM 9278 and HWA 285, on pancreatic exocrine secretion of the dog.

Authors:  F Yamagishi; N Homma; K Haruta; K Iwatsuki; S Chiba
Journal:  Jpn J Pharmacol       Date:  1985-10

8.  Calcium source for excitation-contraction coupling in myocardium of nonhibernating and hibernating chipmunks.

Authors:  N Kondo; S Shibata
Journal:  Science       Date:  1984-08-10       Impact factor: 47.728

9.  Calcium-activated transient outward current in calf cardiac Purkinje fibres.

Authors:  S A Siegelbaum; R W Tsien
Journal:  J Physiol       Date:  1980-02       Impact factor: 5.182

10.  Ryanodine modification of cardiac muscle responses to potassium-free solutions. Evidence for inhibition of sarcoplasmic reticulum calcium release.

Authors:  J L Sutko; J L Kenyon
Journal:  J Gen Physiol       Date:  1983-09       Impact factor: 4.086
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  4 in total

1.  Comparative analysis of the kinetic characteristics of L-type calcium channels in cardiac cells of hibernators.

Authors:  A E Alekseev; N I Markevich; A F Korystova; A Terzic; Y M Kokoz
Journal:  Biophys J       Date:  1996-02       Impact factor: 4.033

2.  Identification of a pre-hibernating state in myocardium from nonhibernating chipmunks.

Authors:  N Kondo
Journal:  Experientia       Date:  1987-08-15

3.  Electrophysiological effects of Ca antagonists, tetrodotoxin, [Ca]o and [Na]o on myocardium of hibernating chipmunks: possible involvement of Na-Ca exchange mechanism.

Authors:  N Kondo
Journal:  Br J Pharmacol       Date:  1987-06       Impact factor: 8.739

4.  Comparison between effects of caffeine and ryanodine on electromechanical coupling in myocardium of hibernating chipmunks: role of internal Ca stores.

Authors:  N Kondo
Journal:  Br J Pharmacol       Date:  1988-12       Impact factor: 8.739
  4 in total

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