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Biochemical evidence of thiamin deficiency in young Ghanian children
Insights
Biochemical studies in Ghanaian children revealed widespread thiamin deficiency, even in healthy groups. Nutritional therapy normalized thiamin levels in malnourished children, highlighting a critical public health concern.
Area of Science:
- Biochemistry
- Nutritional Science
- Pediatrics
Background:
- Nutritional status is crucial for child development.
- Thiamin (vitamin B1) deficiency can have severe health consequences.
- Biochemical markers are essential for assessing nutritional deficiencies.
Purpose of the Study:
- To assess the nutritional status of Ghanaian children.
- To investigate the prevalence of thiamin deficiency using biochemical markers.
- To evaluate the impact of nutritional therapy on thiamin status.
Main Methods:
- Biochemical analysis of erythrocyte transketolase activity and its pyrophosphate effect.
- Study included 146 children aged 6 months to 6 years over 2 years.
- Groups comprised severe malnutrition, mild-to-moderate malnutrition, and healthy children.
Main Results:
- Elevated erythrocyte transketolase pyrophosphate effect, indicating thiamin deficiency, was prevalent across all groups, notably in healthy children.
- Nutritional therapy with thiamin supplementation normalized the thiamin status in severely malnourished children.
- No overt clinical signs of thiamin deficiency were observed, despite biochemical evidence.
Conclusions:
- Young Ghanaian children represent a population at risk for clinical thiamin deficiency due to widespread biochemical deficiency.
- Further research is needed to pinpoint the causes: inadequate intake, thiamin destruction, or malabsorption.
- Biochemical assessment is vital for detecting subclinical deficiencies in at-risk populations.
Abstract:
Detailed biochemical studies for nutritional status were carried out on 146 Ghanaian children ages 6 months to 6 years over a 2-year period. Study children comprised three main groups: severe protein-calorie malnutrition; mild to moderate protein-calorie malnutrition and apparently healthy children. Erythrocyte transketolase activity and the percentage of erythrocyte transketolase pyrophosphate effect were also determined. In the first year of the study elevated percentage of transketolase pyrophosphate effect indicative of thiamin deficiency was found in all three of the above-mentioned groups, with the most widespread deficiency in the normal groups. In year 2, repeat studies of the severely malnourished group after 2 weeks of nutritional therapy with the administration of vitamin capsules, which included thiamin, resulted in the normalization of transketolase pyrophosphate effect. Apoenzyme activity was comparable in all groups studied. There were no obvious clinical signs of thiamin deficiency, although sensory testing was not performed. A relatively large number of children with high percentage of transketolase pyrosphosphate effect also had serum folic acid deficiency. This evidence of widespread biochemical thiamin deficiency is indicative of an at-risk population among young children for clinical thiamin deficiency. Further studies are needed to identify whether the problem is inadequate thiamin intake, destruction of thiamin by thiaminases or food preparation methods, or malabsorption of thiamin.