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Nutrición Hospitalaria

versión On-line ISSN 1699-5198versión impresa ISSN 0212-1611

Resumen

PINTO COSTA, Beatriz et al. Citrullinemia stimulation test in the evaluation of the intestinal function. Nutr. Hosp. [online]. 2013, vol.28, n.1, pp.202-210. ISSN 1699-5198.  http://dx.doi.org/10.3305/nh.2013.28.1.6243.

Background: Citrullinemia is been reported as a quantitative parameter of the enterocyte mass and function. Aim: The objective of this research is to analyse the value of fasting and stimulated citrullinemias in the intestinal function evaluation. Methods: A case-control study was undertaken, including 11 patients with short bowel syndrome, 13 patients submitted to malabsorptive bariatric surgery and 11 healthy controls. Plasma levels of amino acids were determined, before and after a stimulation test with oral L-glutamine, by ion exchange chromatography. Results: Citrullinemia was inferior in short bowel patients (28,6 ± 11,3 versus 35,5 ± 11 in operated obese versus 32,2 ± 6,6 μmol/L in controls; n.s.) and lower than 25,5 μmol/L in 54,5% of them (versus 16,7%; p = 0,041; accuracy = 74%; odds ratio = 3, 95%CI 1,2-7,6). ΔCitrullinemia80 (relative variation of citrullinemia at the 80th minute of test) was lower in short bowel patients; its diagnostic accuracy was similar to baseline citrullinemia and also not significant. ΔCitrullinemia80 revealed a high predictive capacity of a short bowel inferior or equal to 50 cm (auR.O.C. = 82,3%; 95%CI 61,7-102,8; p = 0,038). Conclusions: In short bowel syndrome context, citrullinemia stimulation test with oral L-glutamine is feasible and it may improve the predictive capacity of severity. Further investigation is required to determine its clinical relevance and applicability.

Palabras clave : Citrullinemia; Intestinal function; Short bowel syndrome; Bariatric surgery; L-glutamine.

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