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Serum lipid pattern unifies following renal transplantation in children
Thomas Müller1, Silvie Koeppe, Klaus Arbeiter
1Kinderdialyse, Universitätsklinik für Kinder und Jugendheilkunde, AKH Wien, Währinger Gürtel 18-20, 1090 Vienna, Austria.
Insights
Pre-transplant dialysis type significantly impacts early lipid changes in pediatric transplant patients. Later, all patients develop similar post-transplant hyperlipidemia, regardless of prior therapy.
Area of Science:
- Pediatric Nephrology
- Transplant Medicine
- Cardiology
- Biochemistry
Background:
- Hyperlipidemia is a frequent complication in solid organ transplant recipients.
- Understanding factors influencing lipid profiles post-transplantation is crucial for patient management.
- The impact of pre-transplant renal replacement therapy on lipid dynamics in pediatric transplant recipients requires further investigation.
Purpose of the Study:
- To evaluate the role of pre-transplant renal replacement therapy on early and late changes in serum lipid levels in children undergoing renal or heart transplantation.
- To compare lipid profiles between different pre-transplant treatment groups and controls.
Main Methods:
- Serum cholesterol and triglyceride levels were measured in 46 renal and 12 heart transplant recipients before and after transplantation.
- Patients were categorized based on pre-transplant renal replacement therapy: hemodialysis, peritoneal dialysis, or conservative management.
- Lipid levels were compared with a control group of 34 healthy children.
Main Results:
- Children with chronic renal failure exhibited significantly higher baseline serum lipids compared to controls and heart failure patients.
- Pre-transplant, hemodialysis patients had lower cholesterol and triglycerides than peritoneal dialysis patients; conservative management showed intermediate levels.
- Post-transplant, serum cholesterol and triglycerides converged to mean levels of 208 mg/dl and 195 mg/dl, respectively, by 9 months, irrespective of pre-transplant therapy. The cholesterol/HDL ratio decreased significantly.
Conclusions:
- Early post-transplant lipid level changes are significantly influenced by the mode of pre-transplant renal replacement therapy.
- Later, a common pattern of post-transplant hyperlipidemia emerges in all pediatric transplant recipients, independent of prior renal replacement therapy.
- The findings highlight the importance of considering pre-transplant dialysis modality in managing lipid profiles during the early post-transplant period.
Abstract:
Hyperlipidemia is a common problem in solid organ transplant recipients. In this study we evaluated the role of pre-transplant renal replacement therapy on early and late changes of serum lipid levels in children following renal transplantation. In 46 children with chronic renal failure (median age 10.3 years) and 12 children with heart failure (median age 5.0 years), cholesterol and triglycerides were measured before and during follow-up after transplantation. Children with renal failure had significantly higher serum lipids than controls ( n=34, median age 9.2 years) and patients with heart failure. Pre transplantation, cholesterol and triglycerides were significantly lower in the hemodialysis than in the peritoneal dialysis population, whereas conservatively treated children had intermediate levels. After transplantation, serum cholesterol converged towards a mean level of 208 mg/dl and triglyceride levels converged towards a uniform level of 195 mg/dl at 9 months post transplant. The ratio of cholesterol/high-density lipoprotein significantly decreased from 4.7 to 3.8. The pattern of "post-transplant hyperlipidemia" was similar in both renal and cardiac allograft recipients. Hence, the early post-transplant changes of serum lipid pattern are markedly dependent on the mode of pre-transplant renal replacement therapy. Later, serum lipid levels were no longer influenced by prior renal replacement therapy and showed a new pattern of "post-transplant hyperlipidemia" in all children.