TY - JOUR
T1 - Assessment of vitamin A status of preschool children in Indonesia using plasma retinol-binding protein
AU - Semba, R. D.
AU - Yuniar, Y.
AU - Gamble, M. V.
AU - Natadisastra, G.
AU - Muhilal,
N1 - Funding Information:
Supported by the United States Agency for International Development (Cooperative Agreement HRN-A-00–97–00015–00) and the National Institutes of Health (HD32247, HD30042).
PY - 2002
Y1 - 2002
N2 - Although plasma retinol-binding protein (RBP) has been proposed as an indicator of vitamin A status of populations in less technologically developed settings, potential factors which could influence this indicator include inflammation and protein energy status. Plasma RBP, retinol, α1-acid glycoprotein (AGP), C-reactive protein (CRP), and albumin were measured in a study of 236 preschool children in Bandung, Indonesia. Spearman correlation coefficient between plasma RBP and retinol concentrations was 0.55 (p < 0.0001). By linear regression, 0.70 μmol/l retinol was equivalent to 0.69 μmol/l RBP. With these cut-off points for defining vitamin A deficiency and plasma retinol as the standard for comparison, RBP had a sensitivity and specificity of 75.0 per cent and 63.2 per cent, respectively. The correlation between RBP and retinol was not affected by plasma AGP, CRP, or albumin concentration. Measurement of plasma RBP by radial immunodiffusion is simple and inexpensive, and this test can be used as a simple surrogate measure for vitamin A concentrations in large field studies.
AB - Although plasma retinol-binding protein (RBP) has been proposed as an indicator of vitamin A status of populations in less technologically developed settings, potential factors which could influence this indicator include inflammation and protein energy status. Plasma RBP, retinol, α1-acid glycoprotein (AGP), C-reactive protein (CRP), and albumin were measured in a study of 236 preschool children in Bandung, Indonesia. Spearman correlation coefficient between plasma RBP and retinol concentrations was 0.55 (p < 0.0001). By linear regression, 0.70 μmol/l retinol was equivalent to 0.69 μmol/l RBP. With these cut-off points for defining vitamin A deficiency and plasma retinol as the standard for comparison, RBP had a sensitivity and specificity of 75.0 per cent and 63.2 per cent, respectively. The correlation between RBP and retinol was not affected by plasma AGP, CRP, or albumin concentration. Measurement of plasma RBP by radial immunodiffusion is simple and inexpensive, and this test can be used as a simple surrogate measure for vitamin A concentrations in large field studies.
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U2 - 10.1093/tropej/48.2.84
DO - 10.1093/tropej/48.2.84
M3 - Article
C2 - 12022434
AN - SCOPUS:0036240681
SN - 0142-6338
VL - 48
SP - 84
EP - 87
JO - Journal of tropical pediatrics
JF - Journal of tropical pediatrics
IS - 2
ER -