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Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes
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Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes

Published on: September 18, 2017

Mechanisms of altered Ca²⁺ handling in heart failure

Min Luo1, Mark E Anderson

  • 1Division of Cardiovascular Medicine, Department of Internal Medicine, Cardiovascular Research Center, Carver College of Medicine, University of Iowa, Iowa City, IA, USA.

Circulation Research
|August 31, 2013
PubMed

Insights

Defective intracellular calcium (Ca²⁺) handling causes heart failure dysfunction. Understanding these molecular mechanisms may lead to new heart failure therapies.

Area of Science:

  • Cardiovascular Physiology
  • Molecular Cardiology
  • Heart Failure Pathophysiology

Background:

  • Calcium (Ca²⁺) is vital for linking myocardial electrical activity to contraction.
  • Heart failure is characterized by mechanical dysfunction and arrhythmias, often stemming from impaired intracellular Ca²⁺ homeostasis.
  • Pathological changes in Ca²⁺-handling proteins contribute to heart failure.

Purpose of the Study:

  • To review the molecular mechanisms underlying defective Ca²⁺ cycling in heart failure.
  • To explore how this knowledge can inform novel therapeutic strategies for heart failure.

Main Methods:

  • Literature review of molecular mechanisms in heart failure.
  • Analysis of Ca²⁺ homeostasis and protein alterations.
  • Exploration of potential therapeutic translations.

Main Results:

  • Defective intracellular Ca²⁺ homeostasis is a key driver of contractile dysfunction and arrhythmias in heart failure.
  • Altered expression and activity of Ca²⁺-related proteins are implicated.
  • Fundamental insights into Ca²⁺ cycling pathways are emerging.

Conclusions:

  • Molecular understanding of Ca²⁺ cycling defects offers potential for innovative heart failure treatments.
  • Targeting Ca²⁺ pathways may address mechanical dysfunction and arrhythmias.
  • Further research into Ca²⁺ homeostasis is crucial for therapeutic development.

Keywords:
CaMKIIcalciumexcitation-contraction couplingheart failuremitochondria

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