Related Experiment Video
Updated: Aug 12, 2026

Determining Soil-transmitted Helminth Infection Status and Physical Fitness of School-aged Children
Published on: August 22, 2012
[Protein profile and vitamin A in children of school age in Ivory Coast]
1Laboratoire de biochimie et biologie moléculaire, UFR de sciences pharmaceutiques et biologiques de Cocody, Côte d'Ivoire. felhouph@yahoo.fr
Insights
Vitamin A deficiency in school-aged children is linked to lower nutritional (retinol binding protein) and immunity (immunoglobulin A) proteins. It also shows increased inflammatory markers (alpha-1 glycoprotein acid) in boys, linked to diet and environment.
Area of Science:
- Nutritional Biochemistry
- Immunology
- Pediatric Health
Context:
- Vitamin A deficiency is a global health concern, particularly in school-aged children.
- Dietary micronutrient deficiencies, especially those rich in carbohydrates, contribute to vitamin A deficiency.
- Assessing nutritional, immune, and inflammatory markers provides insights into the comprehensive impact of vitamin A deficiency.
Purpose:
- To investigate the changes in blood nutritional, immunity, and inflammatory proteins in school-aged children with vitamin A deficiency.
- To determine the relationship between vitamin A levels and specific protein concentrations.
- To identify key biomarkers associated with vitamin A deficiency in this population.
Summary:
- A study of 262 Ivorian school-aged children revealed that 36.6% had vitamin A deficiency.
- Children with vitamin A deficiency exhibited lower levels of retinol binding protein and immunoglobulin A.
- An isolated increase in alpha-1 glycoprotein acid was observed in boys with vitamin A deficiency, potentially linked to environmental factors.
Impact:
- Identifies retinol binding protein, immunoglobulin A, and alpha-1 glycoprotein acid as key protein markers for vitamin A deficiency in children.
- Highlights the role of diet and environmental factors in vitamin A deficiency and its associated protein changes.
- Provides evidence for the impact of vitamin A deficiency on both nutritional status and immune function in pediatric populations.
Abstract:
The purpose of this transverse prospective study was to determine blood nutritional, immunity and inflammatory proteins change in vitamin A deficiency in children of school-age (262 children, aged 7 to 15 years). Blood vitamin A has been determined by HPLC with UV detection. Proteins have been measured by radial immunodiffusion according to Mancini. Results showed that 96 children (36.6%) presented a vitamin A deficiency (vitamin A < 200 microg/L with a retinol binding protein/transthyretin molar ratio = 0.29 +/- 0.06) while 166 (63.3%) children presented normal blood concentrations of vitamin A (vitamin A > or = 200 microg/L with a Retinol Binding Protein/Transthyretin molar ratio = 0.40 +/- 0.08). This study showed that the retinol binding protein and the immunoglobulin A are lower in children with vitamin A deficiency. On the other hand, an isolated increase of alpha-1 glycoprotein acid has been observed in boys with vitamin A deficiency. The vitamin A deficiency observed in this survey is due to a micronutrients deficiency in the diet which is essentially based on glucides. The positive correlation between vitamin A and immunoglobulin A concentrations might be the result of the vitamin A inductive effect during immunoglobulins A synthesis. The isolated increasing of alpha-1 glycoprotein acid in boys with vitamin A deficiency has been assigned to the ecosensitiveness of the unfavourable environment. We therefore concluded that, in Ivorian primary-school-aged children with vitamin A deficiency, nutritional, immunity and inflammatory proteins which are modified are respectively retinol binding protein, immunoglobulin A and alpha-1 glycoprotein acid.
More Related Videos
Related Concept Videos
Key Elements for Plant Nutrition
Role of Skin in Vitamin D Synthesis
The solar UV B rays (290-315 nm) are absorbed by the skin, and 7-dehydrocholesterol (provitamin D3) photolyzes it to previtamin D3, which undergoes a rapid transformation to vitamin D3(cholecalciferol).
Bioavailability: Overview
Role of Vitamins in Maintaining Bone Health
Vitamin A
Vitamin A is involved in the process of bone remodeling. Retinoic acid, the active metabolite of Vitamin A, has nuclear receptors in osteoblasts and osteoclasts, which are involved in bone remodeling.
Vitamin B12
Vitamin B12 acts as a cofactor during the formation of osteoblast-related proteins, such as osteocalcin. Vitamin B12 plays a role...
Mineral, Vitamin and Water Absorption
Environmental Influences on Intelligence

