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A study of iron complexation in a swine model
B Dean1, F W Oehme, E Krenzelok
1Pittsburgh Poison Center, Children's Hospital of Pittsburgh, PA 15213.
Veterinary and Human Toxicology
|August 1, 1988
Summary
Standard treatments for iron poisoning using bicarbonate or phosphate to reduce iron absorption are ineffective. Deferoxamine significantly reduced iron levels, suggesting it is a more viable therapeutic option.
Area of Science:
- Toxicology
- Gastroenterology
- Pediatric Emergency Medicine
Background:
- Iron poisoning is a common pediatric emergency.
- Standard treatments include oral bicarbonate or phosphate to decrease iron absorption.
- The efficacy of these traditional treatments is rarely questioned.
Purpose of the Study:
- To evaluate the effectiveness of bicarbonate and phosphate in reducing iron absorption during simulated iron poisoning.
- To compare these agents with deferoxamine in a swine model.
Main Methods:
- A swine model was used to simulate iron poisoning (300 mg/kg FeSO4).
- Pigs were randomized into four groups: control (distilled water), sodium bicarbonate, sodium dihydrogen phosphate, or deferoxamine.
- Serum iron levels were measured over 6 hours.
Main Results:
- Bicarbonate and phosphate treatments showed no significant difference in iron absorption compared to the control group.
- Deferoxamine significantly reduced serum iron concentrations, indicating decreased iron absorption.
- p > 0.05 for bicarbonate/phosphate vs. control; p < 0.05 for deferoxamine vs. others.
Conclusions:
- Oral bicarbonate and phosphate are ineffective for reducing iron absorption in acute iron poisoning.
- Deferoxamine demonstrates efficacy in reducing iron absorption.
- These findings challenge the routine use of bicarbonate and phosphate in iron poisoning management.