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Serum leptin concentrations in children with mild and moderate malnutrition
Grazyna Czaja-Bulsa1, Barbara Garanty-Bogacka, Aneta Gebala
1Zakład Pielegniarstwa Pediatrycznego Pomorskiej Akademii Medycznej w Szczecinie ul. Zołnierska 48, 71-210 Szczecin.
Introduction:
Numerous studies have reported a strong relationship between plasma leptin concentration and percentage of body fat, fat mass, and body mass index (BMI) in obese and non-obese children. The objective of the present study was to assess the usefulness of serum leptin concentration in disclosing prepubertal malnutrition.
Material And Method:
Leptin concentrations in serum were determined and anthropometric parameters were measured in 149 children (3-6 and 7-10 years old). The Cole index of nutritional status was calculated. 44 children (I) presented with long-standing malnutrition due to celiac disease or food allergy and 105 children (II) were healthy.
Results:
Leptin concentrations in both age groups of undernourished boys (median 2.7 and 2.7 microg/L) and in younger undernourished girls (median 4.2 microg/L) did not differ from concentrations in healthy children (median 2.9, 2.9, and 3.4 microg/L, respectively). Leptin concentrations in older undernourished girls were significantly lower than in healthy girls (median 4.2 vs. 8.8 microg/L, respectively; p < 0.05) of comparable age. In healthy children, leptin levels correlated with gender, body mass, BMI, Cole ratio (r = 0.39-0.41, r = 0.33, r = 0.28, r = 0.22, respectively; p < 0.005), and height (r = 0.19; p < 0.05). Serum leptin concentrations in undernourished children correlated with gender, arm circumference, and BMI (r = 0.27-0.35, r = 0.27, r = 0.25, respectively; p < 0.05).
Conclusions:
Our results show that serum leptin concentration is not a useful indicator of mild and moderate malnutrition in prepubertal children.
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