Zinc: a metallic shield against cardiac inflammation

Area of Science:

• Biochemistry
• Immunology
• Cardiovascular Medicine

Background:

• Zinc (Zn) is an essential trace element vital for over 10% of human proteins.
• Zn plays key roles in immune regulation, inflammation control, and redox signaling.
• Low Zn status is linked to impaired immunity and increased oxidative stress, contributing to cardiac inflammatory diseases (CIDs).

Purpose of the Study:

• To review the biochemical, immunological, and therapeutic roles of zinc in cardiac inflammation.
• To highlight zinc's potential as an intervention for CIDs.

Main Methods:

• Literature review synthesizing current knowledge on zinc's functions in the cardiovascular system.
• Analysis of zinc's role in redox signaling, antioxidant defense, and inflammatory pathways.

Main Results:

• Zinc protects against oxidation and acts as a redox-sensitive messenger via the "Redox Zinc Switch".
• In the cardiovascular system, zinc influences antioxidant defense, cytokine regulation, and membrane repair.
• Emerging evidence suggests zinc supplementation can mitigate myocardial inflammation and cardiac remodeling.

Conclusions:

• Optimal zinc levels, achieved through diet or supplementation, are a promising strategy to reduce the incidence and impact of CIDs.
• Maintaining sufficient zinc is vital for cardiovascular resilience, particularly in at-risk populations.
• Zinc supplementation may improve outcomes in oxidative stress-driven heart conditions.