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Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611

Abstract

GUILLEN-LOPEZ, Sara et al. Comparison of free carnitine levels with nutritional status in infantile nephropathyc cistinosis patients. Nutr. Hosp. [online]. 2015, vol.32, n.6, pp.2613-2617. ISSN 1699-5198.  http://dx.doi.org/10.3305/nh.2015.32.6.9845.

Introduction: infantile nephropathic cystinosis (INC) is an autosomal recessive disorder that causes defects in cystine transport with subsequent accumulation in almost all body tissues, especially kidneys. There are few studies regarding the nutritional status assessment of patients with INC. It has been reported that patients with INC showed increased urinary losses of carnitine, resulting in plasma and muscle carnitine deficiency also increased metabolic requirements of carnitine in this patients have also been proposed, but to date carnitine supplementation is controversial. Objective: the aim of this study was to compare carnitine blood concentrations with nutritional status assessed by three anthropometric parameters: body mass index, mid-upper arm circumference and tricipital skin fold in patients with INC. Material and methods: anthropometric assessment of 10 patients with INC which included measurement of weight, height, mid-upper arm circumference and tricipital skin fold thickness. Free carnitine (C0) was measured by tandem mass spectrometry in fasting blood samples. Results: a total of 10 patients with INC were analyzed, 5 with and 5 without renal graft. According to the body mass index, 3/10 presented malnutrition. Muscular mass was found low in 8/10 patients (3 without renal graft and all the transplanted) the mid-upper arm circumference showed correlation with C0 blood concentrations (r2 = 0.353); non transplanted patients had C0 levels significantly lower than the transplanted ones (Chi2 = 0.0027). Conclusion: in this study we found that 70% of patients had low C0 blood levels that had a correlation with depleted lean body mass. It is recommendable to evaluate the nutritional status of these patients as part of their routine medical evaluation.

Keywords : Carnitine; Cystinosis; Infantile nephropathic cystinosis; Fanconi syndrome; Nutritional status.

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