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Published on: July 19, 2018
Carnitine supplementation improves apolipoprotein B levels in pediatric peritoneal dialysis patients
Celalettin Koşan1, Lale Sever, Nil Arisoy
1Department of Pediatric Nephrology, Medical Faculty of Atatürk University, Erzurum, Turkey. ckosan@atauni.edu.tr
Insights
Carnitine supplementation in pediatric peritoneal dialysis (PD) patients did not improve overall lipid profiles. However, it significantly reduced apolipoprotein B levels, suggesting a potential benefit for this specific marker.
Area of Science:
- Nephrology
- Pediatric Medicine
- Nutritional Science
- Biochemistry
Background:
- Conflicting evidence exists regarding carnitine supplementation's impact on lipid metabolism in peritoneal dialysis (PD) patients.
- Pediatric PD patients often exhibit dyslipidemia, necessitating investigation into effective management strategies.
- Carnitine deficiency is observed in PD patients, characterized by lower free carnitine and higher acyl-carnitine levels.
Purpose of the Study:
- To investigate the effects of oral l-carnitine supplementation on lipid metabolism parameters in pediatric patients undergoing PD.
- To evaluate changes in triglycerides, total cholesterol, LDL-C, HDL-C, VLDL-C, phospholipids, and apolipoproteins A-I and B.
Main Methods:
- A study involving 20 pediatric PD patients (aged 2-18 years) and a matched healthy control group.
- Baseline assessment of lipid profiles and carnitine levels in both groups.
- Treatment group received oral l-carnitine (50 mg/kg/day) for 30 days, followed by post-treatment assessment.
Main Results:
- Pediatric PD patients exhibited higher baseline triglyceride, total cholesterol, LDL-C, VLDL-C, and apolipoprotein B levels compared to controls.
- No significant differences were found in HDL-C, free fatty acids, phospholipids, or apolipoprotein A-I between groups at baseline.
- L-carnitine supplementation significantly decreased apolipoprotein B levels (P<0.001) but did not alter other measured lipid parameters.
Conclusions:
- Oral l-carnitine supplementation does not ameliorate the overall lipid profile in pediatric PD patients.
- Carnitine supplementation significantly reduces apolipoprotein B levels in this patient population.
- Carnitine supplementation may be beneficial for targeting elevated apolipoprotein B in pediatric PD patients.
Abstract:
There have been conflicting reports concerning the effect of carnitine supplementation on lipid metabolism in patients on peritoneal dialysis (PD). We investigated several parameters of lipid metabolism in pediatric PD patients supplemented with carnitine. The study included 20 patients receiving PD (treatment group) aged 2-18 years and a matched healthy control group. In the treatment group, baseline triglyceride, total cholesterol, low-density lipoprotein cholesterol, very low-density lipoprotein cholesterol, and apolipoprotein B levels were higher than in the control group. High-density lipoprotein cholesterol, free fatty acid, phospholipids, and apolipoprotein A-I levels were not different from those in the control group. The baseline plasma free carnitine level was lower and acyl-carnitine level was higher in the treatment group. No difference was found between the groups with respect to plasma total carnitine levels. Oral l-carnitine supplementation (50 mg/kg per day for 30 days) led to a significant decrease (from a baseline value of 146.6+/-51.8 mg/dl to 63.6+/-22.2 mg/dl, P<0.001) in apolipoprotein B levels, and no significant change in the other lipid parameters of the treatment group. Oral l-carnitine supplementation does not ameliorate the lipid profile in pediatric PD patients, but it causes a significant decrease in apolipoprotein B levels. Hence, carnitine supplementation may be recommended for decreasing apolipoprotein B levels in this patient population.
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