Magnesium in hypertension: mechanisms and clinical implications

Area of Science:

• Cardiovascular Science
• Renal Physiology
• Immunology

Background:

• Hypertension is a major risk factor for cardiovascular disease and mortality.
• Chronic, latent magnesium (Mg²⁺) depletion affects a significant portion of the population.
• Mg²⁺ balance is implicated in the pathogenesis and treatment of hypertension.

Purpose of the Study:

• To review the multifaceted mechanisms by which Mg²⁺ influences blood pressure.
• To explore Mg²⁺'s role in modifying hypertension risk and complicating treatment.
• To elucidate Mg²⁺'s impact on sympathetic tone, vascular tone, renal function, and inflammation.

Main Methods:

• Literature review of existing research on magnesium and hypertension.
• Analysis of Mg²⁺'s effects on key physiological pathways.
• Exploration of Mg²⁺'s role in modulating inflammatory processes.

Main Results:

• Mg²⁺ modulates sympathetic tone via NMDA receptor and N-type Ca²⁺ channel activity.
• Mg²⁺ influences vascular tone through L-type Ca²⁺, eNOS activity, and prostacyclin release.
• Mg²⁺ affects renal K⁺ handling, aldosterone secretion, and inflammatory pathways including NLRP3 inflammasome and IsoLG production.

Conclusions:

• Mg²⁺ plays a critical role in regulating blood pressure.
• Understanding these mechanisms offers insights into hypertension pathogenesis.
• Mg²⁺ balance is crucial for cardiovascular health and hypertension management.