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Red blood cell electrolyte changes in patients with juvenile diabetes mellitus
Insights
Insulin rapidly alters red blood cell electrolytes in children with diabetes mellitus, normalizing sodium and potassium levels. Serum potassium also decreases post-insulin, highlighting rapid electrolyte shifts in pediatric diabetes.
Area of Science:
- Pediatric Endocrinology
- Clinical Chemistry
- Diabetology
Background:
- Diabetes mellitus in children involves complex metabolic alterations.
- Electrolyte balance, particularly sodium and potassium, is crucial for cellular function.
- Red blood cells (RBCs) serve as indicators of systemic electrolyte status.
Purpose of the Study:
- To investigate sodium and potassium concentrations in RBCs and serum of children with diabetes mellitus.
- To assess the impact of insulin administration on these electrolyte levels.
- To explore correlations between electrolyte levels, fasting blood glucose, and disease duration.
Main Methods:
- Cross-sectional study involving 21 children with diabetes mellitus.
- Measurement of serum and RBC sodium and potassium levels before and at 1, 2 hours post-insulin administration.
- Statistical analysis to compare patient and control groups and assess correlations.
Main Results:
- Pre-insulin, diabetic children showed significantly higher RBC sodium and lower RBC potassium compared to controls.
- These RBC electrolyte differences normalized 1-2 hours after insulin administration.
- Insulin significantly decreased serum potassium in diabetic patients.
- No correlation found between electrolyte levels and fasting blood glucose.
- Weak negative correlation between RBC potassium and duration of diabetes.
Conclusions:
- Insulin induces rapid and significant electrolyte shifts within RBCs of children with diabetes.
- These findings underscore the dynamic role of insulin in managing electrolyte homeostasis in pediatric diabetes.
- The results have implications for understanding the pathophysiology, diagnosis, and treatment of diabetes in children.
Abstract:
The sodium and potassium concentrations of the red blood cells and the serum were investigated in 21 children with diabetes mellitus. Measurements were made prior to and 1 and 2 hours following insulin administration. Before insulin treatment, the sodium level in the red blood cells of the diabetes patients was significantly higher that the control level, while the potassium level was significantly depressed. These differences were not observed 1 and 2 hours following insulin administration. Attention is drawn to the rapid and extensive electrolyte changes in the red blood cells of diabetics in response to insulin. The potassium content of the serum of the diabetics was significantly decreased by insulin administration. No correlation was found between the electrolyte levels and the fasting blood glucose levels. A weak negative correlation (p less than 0.02) was observed between the potassium content of the red blood cells and the duration of the illness. The pathogenetic, diagnostic and therapeutic implications of the results are discussed.