Abstract
Summary: Total serum cholesterol, phospholipids, and triglyceride levels, lipoprotein fractionation, and plasma parathormone levels were measured in a group of 31 nonnephrotic children with various levels of renal function and on hemodialysis. Group A served as controls and consisted of eight healthy children with glomerular filtration rate (GFR) greater than 110 ml/min/1.73 m2. Group B consisted of six children with GFR of 60 to 95 ml/min/1.73 m2. Group C consisted of nine children with GFR of 10 to 40 ml/min/1.73 m2, and group D consisted of eight children on maintenance hemodialysis with GFR of 0 to 5 ml/min/1.73 m2. Among the groups, there were no significant differences in total serum cholesterol and phospholipid levels. A significant (P > 0.05) increase in triglyceride levels was observed in patient groups C and D.
Lipoprotein fractionation revealed a significant increase (P > 0.05) in the pre-beta lipoprotein levels (very low density lipoproteins) in patients in group D with 63% of these patients demonstrating a type IV lipoprotein pattern. There were no significant differences observed in the beta lipoproteins (low-density lipoproteins). However, the alpha lipoproteins (high-density lipoproteins) decreased significantly (P > 0.05) in patients whose GFR was below 40 ml/min/1.73 m2 (group C) as well as patients in group D.
Absolute plasma parathormone levels did not significantly correlate with serum triglyceride levels and remained normal until after the onset of hemodialysis when they increased significantly in all patients.
Speculation: Evidence has been accumulating over the past few years that chronic hemodialysis and renal transplant adult patients have shortened survival because of accelerated atherosclerotic cardiovascular disease for which hyperlipidemia could be one of several etiologic factors. Similar epidemiologic studies have not been performed in children. We have demonstrated for the first time in children that alterations in serum triglycerides and alpha lipoproteins (high-density lipoproteins) occur early in chronic renal insufficiency and before the onset of uremia when the glomerular filtration rate falls below 40 ml/min/1.73 m2. These lipid abnormalities become further aggravated with the onset of hemodialysis. If pediatric renal transplant patients show similar lipid abnormalities, then the potential for cardiovascular complications will be of importance in the early medical management of these children.
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Papadopoulou, Z., Sandler, P., Tina, L. et al. Hyperlipidemia in Children with Chronic Renal Insufficiency. Pediatr Res 15, 887–891 (1981). https://doi.org/10.1203/00006450-198106000-00001
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DOI: https://doi.org/10.1203/00006450-198106000-00001
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