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Marasmic kwashiorkor anemia. III. Hemoglobin oxygen affinity
Summary
Children with marasmic kwashiorkor show normal 2,3-diphosphoglycerate (2,3-DPG) levels upon admission, which increase after refeeding. This anemia appears to be an adaptation to reduced metabolic activity in severe malnutrition.
Area of Science:
- Biochemistry
- Pediatrics
- Hematology
Background:
- Malnutrition, specifically marasmic kwashiorkor, presents complex hematological alterations.
- Understanding the role of oxygen-hemoglobin dissociation and related metabolites is crucial for managing pediatric malnutrition.
Purpose of the Study:
- To investigate the oxygen-hemoglobin dissociation curve, 2,3-diphosphoglycerate (2,3-DPG), and adenosine triphosphate (ATP) levels in children with marasmic kwashiorkor.
- To correlate these biochemical markers with hematological parameters and disease progression.
Main Methods:
- Studied P50, 2,3-DPG, and ATP levels in marasmic kwashiorkor patients before and after refeeding, compared to controls.
- Grouped patients based on erythropoiesis status (active vs. erythroblastopenia) on admission.
Main Results:
- P50 and 2,3-DPG levels were normal on admission but elevated post-refeeding.
- In patients with active erythropoiesis, 2,3-DPG + ATP correlated with hemoglobin.
- In patients with erythroblastopenia, 2,3-DPG + ATP correlated with blood pH, not hemoglobin.
Conclusions:
- Anemia in marasmic kwashiorkor may be an adaptive response to decreased metabolic activity.
- The disease's hematological presentation likely involves two stages: initial compensatory erythropoiesis followed by a decline in metabolic activity and erythropoiesis.
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