Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Calcium ion in cardiac contractility.

S Ebashi, T Kitazawa, K Kohama

    Recent Advances in Studies on Cardiac Structure and Metabolism
    |May 26, 1976
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Effect of aluminium ion on bioavailability of levofloxacin following oral administration of cilexetil ester of levofloxacin as prodrug in rats.

    Die Pharmazie·2020
    Same author

    Matrix Metalloproteinases -14, -9 and -2 are Localized to the Podosome and Involved in Podosome Development in the A7r5 Smooth Muscle Cell.

    Journal of cardiobiology·2019
    Same author

    Emicizumab, the bispecific antibody to factors IX/IXa and X/Xa, potentiates coagulation function in factor XI-deficient plasma in vitro.

    Journal of thrombosis and haemostasis : JTH·2018
    Same author

    Routine measurements of factor VIII activity and inhibitor titer in the presence of emicizumab utilizing anti-idiotype monoclonal antibodies.

    Journal of thrombosis and haemostasis : JTH·2018
    Same author

    Catheter-related bloodstream infection due to Rhodotorula mucilaginosa with normal serum (1→3)-β-D-glucan level.

    Journal de mycologie medicale·2018
    Same author

    Modified clot waveform analysis to measure plasma coagulation potential in the presence of the anti-factor IXa/factor X bispecific antibody emicizumab.

    Journal of thrombosis and haemostasis : JTH·2018
    Same journal

    Transmural gradients in ischemic canine left ventricle: effects of blood reflow on glycolytic intermediates.

    Recent advances in studies on cardiac structure and metabolism·1976
    Same journal

    The effects of coronary artery ligation on transmural high-energy phosphates following 20 minutes of blood reflow.

    Recent advances in studies on cardiac structure and metabolism·1976
    Same journal

    Subcellular localization of cardiac adenylate cyclase: sarcolemma or sarcoplasmic reticulum?

    Recent advances in studies on cardiac structure and metabolism·1976
    Same journal

    Dual effects of fluoride on the action potential, contraction, and membrane currents in frog atrial muscle.

    Recent advances in studies on cardiac structure and metabolism·1976
    Same journal

    Membrane calcium current in cardiac excitation: effects of ATP and related substances and sodium pump on bullfrog atrium.

    Recent advances in studies on cardiac structure and metabolism·1976
    Same journal

    Relaxation of frog myocardium.

    Recent advances in studies on cardiac structure and metabolism·1976
    See all related articles

    Mitochondria play a role in cardiac muscle relaxation during maximum contraction by managing calcium ion levels. Cardiac troponin

    Area of Science:

    • Cardiovascular Physiology
    • Muscle Biology
    • Biochemistry

    Background:

    • The sarcoplasmic reticulum is crucial for cardiac muscle relaxation under normal physiological conditions.
    • Mitochondrial calcium uptake is minimal during resting states but becomes significant during intense muscle activity.

    Purpose of the Study:

    • To investigate the role of mitochondria in cardiac muscle calcium regulation during varying contraction intensities.
    • To compare the calcium-tension relationship in cardiac muscle with skeletal muscle.

    Main Methods:

    • Utilized glycerinated cardiac muscle fibers to study tension development.
    • Analyzed the relationship between calcium ion concentration and bound calcium on cardiac troponin.

    Main Results:

    Related Experiment Videos

    • Mitochondria contribute to reducing intracellular calcium during maximum cardiac muscle contraction.
    • Cardiac muscle fibers exhibit a less steep tension-calcium relationship compared to skeletal muscles.
    • Cardiac troponin possesses two calcium-binding sites with a 100-fold difference in affinity.

    Conclusions:

    • Mitochondrial calcium uptake is important for cardiac muscle function during high-demand periods.
    • The unique properties of cardiac troponin, including its varied calcium affinities, influence cardiac muscle contractility and relaxation dynamics.