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Eosinophilic gastroenterocolitis in iron lactate-overloaded rats
I Narama1, K Ozaki, S Matsushima
1Research Institute of Drug Safety, Setsunan University, Osaka, Japan.
Toxicologic Pathology
|June 5, 1999
Summary
High iron intake in rats induced eosinophilic gastroenterocolitis, mimicking human disease. This study highlights iron overload
Area of Science:
- Gastroenterology
- Toxicology
- Immunology
Background:
- Eosinophilic gastroenterocolitis (EGC) is a rare inflammatory disorder.
- The role of dietary factors, such as iron, in EGC pathogenesis is not fully understood.
Purpose of the Study:
- To investigate the effects of chronic iron lactate administration on the gastrointestinal tract in rats.
- To determine if iron overload can induce EGC-like pathology and peripheral eosinophilia.
Main Methods:
- Rats were fed diets containing 2.5% or 5.0% iron lactate for 3 months.
- Histopathological examination of the gastrointestinal tract and measurement of peripheral eosinophil counts were performed.
- Serum IgE levels and body weight changes were also assessed.
Main Results:
- Iron lactate induced eosinophilic infiltration in the gastric and intestinal mucosa, consistent with EGC.
- Increased apoptotic bodies and changes in globule leukocytes (mast cell origin) were observed in the gastric mucosa.
- Peripheral eosinophilia and suppressed body weight gain were noted in iron-fed rats, with no significant increase in vascular permeability or IgE levels.
Conclusions:
- Dietary iron overload can induce morphological changes in the rat gastrointestinal tract resembling human EGC.
- The findings suggest a potential link between high iron intake and EGC development, warranting further investigation.
- Iron-induced EGC in rats may serve as a valuable model for studying this condition.
