Fecal alpha1--antitrypsin in healthy and intestinal-disorder Thai children
Tangsilsat, D.; Atamasirikul, K.; Treepongkaruna, S.; Bed, S.N.; Sumritsopak, R.; Kunakorn, M.
Journal of the Medical Association of Thailand 90(7): 1317-1322
2007
ISSN/ISBN: 0125-2208 PMID: 17710971 Document Number: 17849
Determine the normal FA1-AT level in random wet stool of Thai children using RID and NPL, and to study the correlation between RID and NPL methods for measurement of FA1-AT. Random stool samples were collected from healthy children and intestinal-disorders patients. Alpha1-antitrypsin (FA1-AT) in wet stool samples was measured by nephelometry (NPL) and radial-immunodiffusion (RID) methods. Newborn infants had the highest FA1-AT level during the first day of life and declined to the same level as older children on day 3-4. Median and geometric mean of FA1-AT levels by NPL from healthy children aged 1 month-15 years was 1.23 and 1.11 mg/dL respectively. FA1-AT levels by NPL from children with severe intestinal disorders, displaying median and geometric mean at 6.77 and 12.39 mg/dL respectively, were much higher than healthy children. The RID and NPL methods showed a correlation of r = 0.87 (p < 0.01) and R2 = 0.75. Random FA1-AT assay in wet stool is a non-invasive and simple test for supporting diagnosis of protein-losing enteropathy.
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