Tissue magnesium status in diabetes mellitus

Area of Science:

• Biochemistry
• Endocrinology
• Human Physiology

Background:

• Magnesium is an essential mineral involved in numerous cellular processes.
• Insulin-dependent diabetes mellitus (IDDM) is associated with various metabolic derangements.
• Alterations in magnesium levels have been implicated in the pathophysiology of diabetes.

Purpose of the Study:

• To investigate magnesium levels in plasma, leukocytes, erythrocytes, and skeletal muscle of patients with insulin-dependent diabetes mellitus.
• To compare these magnesium concentrations with those in healthy control subjects.

Main Methods:

• Assay of magnesium in plasma, leukocytes, erythrocytes, and skeletal muscle tissue.
• Comparison of magnesium levels between 17 insulin-dependent diabetic patients and 17 healthy subjects.
• Analysis of skeletal muscle magnesium in a separate cohort of 10 diabetic patients and 16 healthy subjects.

Main Results:

• Plasma magnesium concentration was significantly lower in diabetic patients compared to healthy subjects in both study groups.
• Leukocyte and erythrocyte magnesium content did not show significant differences between diabetic patients and healthy subjects.
• Skeletal muscle magnesium content also showed no significant difference between diabetic patients and healthy individuals.

Conclusions:

• Insulin-dependent diabetes mellitus is characterized by reduced plasma magnesium levels.
• Despite lower plasma magnesium, intracellular magnesium concentrations in leukocytes, erythrocytes, and skeletal muscle appear to be maintained in diabetic patients.
• These findings suggest a potential dysregulation in magnesium transport or homeostasis in diabetes, with compensatory mechanisms preserving intracellular levels.