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01.09.2004 | Original Article | Ausgabe 9/2004

Pediatric Nephrology 9/2004

Influence of diet on atherogenic risk in children with renal transplants

Zeitschrift:
Pediatric Nephrology > Ausgabe 9/2004
Autoren:
Luis Aldámiz-Echevarría, Alfredo Vallo, Pablo Sanjurjo, Javier Elorz, José Angel Prieto, José Ignacio Ruiz, Juan Rodríguez-Soriano

Abstract

Cardiovascular disease is one of the main causes of morbidity and mortality in recipients of renal transplants. Although the risk for cardiovascular disease is in part genetically determined, it may also be influenced by diet. The aim of the present study was to analyze the cross-sectional association of dietary intake of nutrients with biochemical markers of atherogenic risk. The influence of diet on the plasma profile of fatty acids was specifically investigated. Twenty-nine children and adolescents (mean age 14 years, range 6–18 years) with stable renal transplants and on a normal diet recorded their food intake for a period of 3 days. The mean calorie intake was 40.6 kcal/kg per day (protein provided 16% of total calories, carbohydrates 45%, and fat 39%). Plasma levels of total cholesterol and low-density lipoprotein-cholesterol were significantly and positively related to intake of monounsaturated fatty acids ( r =0.66, P =0.007 and r =0.62, P =0.02, respectively) and to plasma levels of elaidic acid, a trans fatty acid ( r =0.43, P =0.02 and r =0.54, P =0.01, respectively). Insulin resistance, estimated from values of plasma glucose ( r =0.70, P =0.03), plasma insulin ( r =0.59, P =0.02), and HOMA index ( r =0.62, P =0.01), was also directly related to the intake of monounsaturated fatty acids. Plasma plasminogen activator inhibitor-1 activity correlated positively with total fat intake ( r =0.59, P =0.04). Plasma levels of homocysteine were negatively related to the intake of carbohydrates ( r =−0.62, P =0.02). We conclude that reasonable dietary recommendations to minimize the atherogenic risk in children with stable renal transplants should include a protein intake adjusted to the requirements for age, a large intake of carbohydrates leading to a low glycemic load, and a fat intake of less than 30% of the total calorie intake. The amount of monounsaturated and trans fatty acids in the diet should be especially limited. A sufficient intake of polyunsaturated fatty acids, with an adequate ratio between ω6 and ω3 components, should also be provided.

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