[Relation between diet protein and calciuria in children and adolescents with nephrolitiasis].
OBJECTIVE
The objective was to evaluate the quality of diet and the relationship between protein diet and calciuria in children and adolescents with nephrolithiasis.


METHODS
Forty-nine children and adolescents (28 male and 21 female; 10.1 +/- 3.16 years old) with nephrolithiasis were included in study. Diet evaluation was performed over a 3 day period in order to determine nutrient consumption. The analysis of diets were carried out by DietWin Clínico 3.0 software. One 24-hour urine sample was collected for the measurement of calcium. Nutritional status was also assessed by Body Mass Index (BMI).


RESULTS
The diet of patients containe insufficient energy and calcium. High levels of protein (69.64 +/- 16.42 gm), mainly animal source (65.81 +/- 11.45%) and low levels of calcium (500.95 +/- 284.64 mg) was observed (95%). Analysis of 24 hour urine samples revealed that 25.0% of the patients presented hypercalciuria. A positive correlation (r = 0.26680) between animal protein intake and calciuria was found, in opposite of vegetable protein and calciuria correlation (r = -0.2675).


CONCLUSIONS
Animal protein of the diet has a significant effect in urinary excretion of calcium in patients with nephrolithiasis.
de Andrade
Ana Suely
AS
Nutricionista do Hospital de Pediatria da UFRN.
de Silva
Adriana Moreira Almeida
AM
Jalles
Luíza Maria Carvalho
LM
Lopes
Mônica Ferreira
MF
de Brito
Tereza Neuma Souza
TN
de Pedrosa
Lúcia Fátima Campos
LF
D000293:Adolescent; D017195:Adolescent Nutritional Physiological Phenomena / Q000502:physiology; D015992:Body Mass Index; D002118:Calcium / Q000652:urine*; D002648:Child; D002664:Child Nutritional Physiological Phenomena / Q000502:physiology*; D002675:Child, Preschool; D004032:Diet; D004034:Diet Surveys; D004044:Dietary Proteins / Q000008:administration & dosage* / Q000378:metabolism; D002149:Energy Intake / Q000502:physiology; D005247:Feeding Behavior / Q000502:physiology; D005260:Female; D006801:Humans; D008297:Male; D053040:Nephrolithiasis / Q000378:metabolism* / Q000652:urine; D009752:Nutritional Status / Q000502:physiology*
D004044:Dietary Proteins; D002118:Calcium