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Related Experiment Video

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Assessment of Sarcoplasmic Reticulum Calcium Reserve and Intracellular Diastolic Calcium Removal in Isolated Ventricular Cardiomyocytes
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Glycation in the cardiomyocyte.

Christine E Delligatti1, Jonathan A Kirk1

  • 1Department of Cell and Molecular Physiology, Loyola University Chicago Stritch School of Medicine, Maywood, IL, United States.

Vitamins and Hormones
|July 12, 2024
PubMed
Summary

Protein glycation, a consequence of the Maillard reaction, impacts heart cells (cardiomyocytes) by affecting contractility and cell death. Therapeutic attempts to reverse glycation in cardiovascular disease have faced challenges.

Keywords:
Advanced glycation end-products (AGEs)CardiomyocyteGlycationGlyoxalasePost-translational modification (PTM)Protein quality control (PQC)Receptors for advanced glycation end-products (RAGE) Note: Also called AGERSarcomere

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Area of Science:

  • Biochemistry
  • Cardiovascular Biology
  • Cellular Physiology

Background:

  • Glycation is an irreversible protein modification via the Maillard reaction, primarily affecting lysine and arginine residues.
  • Elevated levels of glycating agents (glyoxal, methylglyoxal) are linked to cardiovascular disease risk factors like diabetes, aging, and smoking.
  • Understanding glycation's impact on cardiomyocytes is crucial for disease insight and therapeutic development.

Purpose of the Study:

  • To review the effects of protein glycation on cardiomyocytes.
  • To discuss therapeutic strategies targeting glycation in cardiovascular disease.
  • To provide insights into future research and patient treatment for glycation-related cardiac dysfunction.

Main Methods:

  • Literature review of protein glycation mechanisms and consequences.
  • Analysis of extracellular and intracellular effects of glycation on cardiomyocytes.
  • Examination of therapeutic interventions and clinical trial outcomes for glycation modulation.

Main Results:

  • Glycation impacts cardiomyocytes through extracellular mechanisms (e.g., RAGE signaling, matrix modification) and intracellular pathways (e.g., calcium handling, protein quality control, cytoskeleton).
  • Intracellular glycation leads to impaired contractility and increased cell death.
  • Therapeutic approaches to reduce protein glycation have yielded mixed results in clinical trials, indicating significant challenges.

Conclusions:

  • Protein glycation poses a significant threat to cardiomyocyte function and cardiac health.
  • Current therapeutic strategies for mitigating glycation's cardiac effects are limited and require further development.
  • Future research should focus on novel therapeutic targets and improved drug delivery for glycation modulation in cardiovascular disease.