The Impact of Chronic Magnesium Deficiency on Excitable Tissues-Translational Aspects

Area of Science:

• Physiology
• Neuroscience
• Biochemistry

Background:

• Neuromuscular excitability relies on magnesium ions (Mg²⁺) for proper cell membrane function.
• Disruptions in Mg²⁺ homeostasis lead to abnormal electrogenesis and can be life-threatening.
• Chronic subclinical Mg²⁺ deficiency is common and linked to increased risks of cardiovascular, respiratory, and neurological diseases, alongside higher mortality rates.

Purpose of the Study:

• To review the multifaceted effects of Mg²⁺ on excitable tissues in both healthy and diseased states.
• To highlight Mg²⁺'s role as a natural membrane stabilizer that counteracts hyperexcitability conditions.
• To emphasize the therapeutic potential of magnesium recompensation and supplementation for treating hyperexcitability.

Main Methods:

• Literature review focusing on Mg²⁺'s physiological roles.
• Analysis of Mg²⁺'s impact on ion channel function and neurotransmission.
• Examination of Mg²⁺'s effects in cardiovascular, respiratory, and neurological systems.

Main Results:

• Mg²⁺ promotes bronchodilation by antagonizing calcium channels and inhibiting bronchoconstrictor release.
• Magnesium exhibits antihypertensive effects by reducing vascular resistance and enhancing nitric oxide release.
• In the brain, Mg²⁺ modulates ion channels and neurotransmitter systems, offering neuroprotective and other therapeutic benefits.
• Magnesium deficiency disrupts cardiac function, leading to arrhythmias and impaired excitation-contraction coupling.
• Mg²⁺ stabilizes membranes, opposing hyperexcitability.

Conclusions:

• Magnesium is essential for maintaining neuromuscular excitability and overall physiological function.
• Mg²⁺ deficiency contributes to various pathologies, while adequate magnesium levels offer therapeutic benefits.
• Magnesium supplementation is a valuable strategy for managing conditions characterized by hyperexcitability.