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2015 ; 16
(ä): 183
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Coenzyme Q10 dose-escalation study in hemodialysis patients: safety,
tolerability, and effect on oxidative stress
#MMPMID26531095
Yeung CK
; Billings FT 4th
; Claessens AJ
; Roshanravan B
; Linke L
; Sundell MB
; Ahmad S
; Shao B
; Shen DD
; Ikizler TA
; Himmelfarb J
BMC Nephrol
2015[Nov]; 16
(ä): 183
PMID26531095
show ga
BACKGROUND: Coenzyme Q10 (CoQ10) supplementation improves mitochondrial coupling
of respiration to oxidative phosphorylation, decreases superoxide production in
endothelial cells, and may improve functional cardiac capacity in patients with
congestive heart failure. There are no studies evaluating the safety,
tolerability and efficacy of varying doses of CoQ10 in chronic hemodialysis
patients, a population subject to increased oxidative stress. METHODS: We
performed a dose escalation study to test the hypothesis that CoQ10 therapy is
safe, well-tolerated, and improves biomarkers of oxidative stress in patients
receiving hemodialysis therapy. Plasma concentrations of F2-isoprostanes and
isofurans were measured to assess systemic oxidative stress and plasma CoQ10
concentrations were measured to determine dose, concentration and response
relationships. RESULTS: Fifteen of the 20 subjects completed the entire dose
escalation sequence. Mean CoQ10 levels increased in a linear fashion from 704 ±
286 ng/mL at baseline to 4033 ± 1637 ng/mL, and plasma isofuran concentrations
decreased from 141 ± 67.5 pg/mL at baseline to 72.2 ± 37.5 pg/mL at the
completion of the study (P = 0.003 vs. baseline and P < 0.001 for the effect of
dose escalation on isofurans). Plasma F2-isoprostane concentrations did not
change during the study. CONCLUSIONS: CoQ10 supplementation at doses as high as
1800 mg per day was safe in all subjects and well-tolerated in most. Short-term
daily CoQ10 supplementation decreased plasma isofuran concentrations in a dose
dependent manner. CoQ10 supplementation may improve mitochondrial function and
decrease oxidative stress in patients receiving hemodialysis. TRIAL REGISTRATION:
This clinical trial was registered on clinicaltrials.gov [NCT00908297] on May 21,
2009.