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Decrease in the antioxidant capacity of red blood cells in children with celiac disease
1Department of Pediatrics, Albert Szent-Györgyi University of Medical School, Szeged, Hungary.
Insights
Children with celiac disease (CD) and cow's milk allergy exhibit impaired erythrocyte glutathione metabolism, indicating reduced protection against oxidative stress. Dietary changes helped normalize these levels.
Area of Science:
- Biochemistry
- Pediatrics
- Hematology
Background:
- Glutathione metabolism plays a crucial role in protecting red blood cells (erythrocytes) from oxidative damage.
- Altered glutathione levels have been observed in various pediatric conditions, but specific changes in celiac disease (CD) and cow's milk allergy (CMA) require further investigation.
Purpose of the Study:
- To compare erythrocyte glutathione metabolism in children with acute CD, treated CD, CMA, iron deficiency, and healthy controls.
- To assess the impact of oxidative stress on erythrocyte glutathione stability in these pediatric groups.
- To evaluate the effect of dietary management on erythrocyte parameters in CD.
Main Methods:
- Erythrocyte glutathione (GSH), glutathione disulfide (GSSG), and related parameters were measured in 11 children with acute CD, 11 with treated CD, 5 with CMA, 11 with iron deficiency, and 22 healthy controls.
- In vitro oxidative stress was induced using acetylphenylhydrazine to assess erythrocyte glutathione stability.
- Methemoglobin, hemichrome, and red blood cell selenium content were also analyzed.
Main Results:
- Children with acute CD showed elevated erythrocyte GSH and decreased GSSG levels compared to controls.
- The GSSG/GSH ratio in acute CD differed significantly from that in iron deficiency.
- Erythrocytes from children with acute CD and CMA exhibited impaired glutathione stability under oxidative load, with increased methemoglobin and hemichrome.
- Red blood cell selenium content was decreased in CD patients.
- Dietary treatment led to normalization of most observed erythrocyte alterations.
Conclusions:
- Erythrocytes in children with celiac disease and cow's milk allergy have a reduced capacity to protect against oxidative stress.
- Glutathione metabolism is significantly altered in pediatric CD and CMA, suggesting a potential role in disease pathogenesis.
- Dietary interventions appear effective in restoring normal erythrocyte function in children with celiac disease.
Abstract:
The erythrocyte glutathione metabolism of 11 children with acute celiac disease (CD), 11 children under gluten free diet with CD and 5 children with cow's milk allergy was compared to that of 11 children with nutritive iron deficiency and to 22 healthy children as controls. Erythrocyte glutathione (GSH) content of celiac children was elevated and the glutathione disulfide (GSSG) level was significantly decreased as compared to normal controls. Erythrocyte GSSG/GSH ratio in acute CD differed also from the one in iron deficiency. In vitro oxidative load of acetylphenylhydrazine proved the impaired glutathione stability of the erythrocytes in acute CD and cow's milk allergy. A parallel rise of methemoglobin and hemichrome level of blood cells was seen. Further on, the selenium content of the red blood cells of CD patients decreased. All alterations of the erythrocyte tended to normalize during the dietetic period. These data suggest a reduced protective capacity of erythrocytes in CD and in cow's milk allergy in childhood against oxidizing stresses.
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