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  • Title: Effects of L-carnitine supplement on serum inflammatory cytokines, C-reactive protein, lipoprotein (a), and oxidative stress in hemodialysis patients with Lp (a) hyperlipoproteinemia.
    Author: Shakeri A, Tabibi H, Hedayati M.
    Journal: Hemodial Int; 2010 Oct; 14(4):498-504. PubMed ID: 20812958.
    Abstract:
    Inflammation, oxidative stress, and high concentration of serum lipoprotein (a) [Lp (a)] are common complications in hemodialysis patients. The present study was designed to investigate the effects of L-carnitine supplement on serum inflammatory cytokines, C-reactive protein (CRP), Lp (a), and oxidative stress in hemodialysis patients with Lp (a) hyperlipoproteinemia [hyper Lp (a)]. This was an unblinded, randomized clinical trial. Thirty-six hyper Lp (a) hemodialysis patients (23 men and 13 women) were randomly assigned to either a carnitine or control group. Patients in the carnitine group received 1000 mg/d oral L-carnitine for 12 weeks, whereas patients in the control group did not receive any L-carnitine supplement. At baseline and the end of week 12, 5 mL of blood were collected after a 12- to 14-hours fast and serum free carnitine, CRP, interleukin-1β, interleukin-6 (IL-6), tumor necrosis factor-α, Lp (a), and oxidized low-density lipoprotein were measured. Serum free carnitine concentration increased significantly by 86% in the carnitine group at the end of week 12 compared with baseline (P<0.001), while serum CRP and IL-6 showed a significant decrease of 29% (P<0.05) and 61% (P<0.001), respectively. No significant changes were observed in serum free carnitine, CRP, and IL-6 in the control group. There were no significant differences between the two groups in mean changes of serum interleukin-1β, tumor necrosis factor-α, Lp (a), and oxidized low-density lipoprotein concentrations. L-carnitine supplement reduces inflammation in hemodialysis patients, but has no effect on hyper Lp (a) and oxidative stress.
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