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Isolation of Human Ventricular Cardiomyocytes from Vibratome-Cut Myocardial Slices
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Published on: May 10, 2020

Magnesium and cardiovascular system.

Michael Shechter1

  • 1Leviev Heart Center, Chaim Sheba Medical Center, Tel Hashomern and the Sackler Faculty of Medicine, Tel Aviv University, Ramat Aviv, Israel. shechtes@netvision.net.il

Magnesium Research
|April 1, 2010
PubMed
Summary
This summary is machine-generated.

Hypomagnesemia, low magnesium levels, is common in hospitalized patients and linked to worse outcomes. Magnesium supplementation may offer cardioprotective benefits, particularly for high-risk coronary artery disease patients.

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Area of Science:

  • Cardiology
  • Clinical Nutrition
  • Pharmacology

Background:

  • Hypomagnesemia is prevalent in hospitalized individuals, especially the elderly with coronary artery disease (CAD) and chronic heart failure.
  • Low magnesium levels correlate with increased risks of diabetes mellitus, metabolic syndrome, and mortality from CAD and all causes.

Purpose of the Study:

  • To review the potential cardioprotective effects of magnesium supplementation in patients with coronary artery disease (CAD).
  • To evaluate the conflicting data on magnesium's efficacy in acute myocardial infarction (AMI) and its role in managing arrhythmias.

Main Methods:

  • Review of existing literature, including randomized clinical trials and animal studies on magnesium's effects.
  • Analysis of magnesium's physiological impacts on myocardial metabolism, vascular function, and platelet activity.

Main Results:

  • Magnesium improves myocardial metabolism, vascular tone, cardiac output, and lipid metabolism, while reducing arrhythmias and oxidative stress.
  • Conflicting results exist for acute myocardial infarction (AMI) patients; large trials show no benefit of IV magnesium, despite some smaller studies suggesting mortality reduction.
  • Magnesium shows theoretical benefits and promising preclinical data for cardioprotection in CAD, with a favorable safety profile.

Conclusions:

  • Magnesium supplementation holds potential as a cardioprotective agent in CAD, especially for high-risk groups like heart failure patients, the elderly, and those with hypomagnesemia.
  • Magnesium therapy is crucial for life-threatening ventricular arrhythmias like Torsades de Pointes and intractable ventricular tachycardia.