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Ex Vivo Assessment of Contractility, Fatigability and Alternans in Isolated Skeletal Muscles
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Physiology of a Forgotten Electrolyte-Magnesium Disorders
Evan Ray1, Krithika Mohan2, Syeda Ahmad1
1Renal-Electrolyte Division, Department of Internal Medicine, University of Pittsburgh, PA.
Advances in Kidney Disease and Health
|March 3, 2023
Summary
Magnesium (Mg2+) is a vital, yet often overlooked, electrolyte. This review details magnesium
Area of Science:
- Biochemistry and Physiology
- Renal Medicine
- Endocrinology
Background:
- Magnesium (Mg2+) is the second most common intracellular cation, crucial for numerous cellular functions.
- Hypomagnesemia affects 15% of the general population and is linked to various chronic diseases.
- Kidneys are primary regulators of magnesium homeostasis, controlling urinary excretion.
Purpose of the Study:
- To review the physiological importance of magnesium (Mg2+).
- To summarize current knowledge on Mg2+ absorption in the kidneys and gut.
- To outline diagnostic strategies and discuss causes and treatments for hypomagnesemia.
Main Methods:
- Literature review of magnesium (Mg2+) physiology and homeostasis.
- Analysis of current research on Mg2+ absorption mechanisms.
- Synthesis of information on hypomagnesemia causes, diagnosis, and treatment.
Main Results:
- Magnesium (Mg2+) homeostasis is tightly regulated by the kidneys, with limited urinary loss.
- Recent discoveries in monogenetic conditions have advanced understanding of tubular Mg2+ absorption.
- Both nutritional and iatrogenic factors significantly impact Mg2+ status.
Conclusions:
- Magnesium (Mg2+) plays a critical physiological role, and its dysregulation can lead to significant health issues.
- Understanding Mg2+ absorption pathways, including genetic influences, is key to diagnosing and managing hypomagnesemia.
- A comprehensive diagnostic and therapeutic approach is necessary for addressing magnesium imbalances.
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