Abstract:
OBJECTIVE:We investigated whether statin-treated heterozygous familial hypercholesterolemic (FH) patients have lower plasma coenzyme Q(10) (CoQ(10)) levels than low-density lipoprotein receptor (LDLR) mutation negative FH patients on equivalent statin doses, and whether lower CoQ(10) concentrations are associated with increased arterial stiffness. METHODS:Thirty LDLR mutation negative patients with clinical FH and 30 mutation positive FH patients matched for gender, statin duration and dose, and a further 30 controls were studied. Plasma CoQ(10) and asymmetric dimethylarginine (ADMA) levels were measured by HPLC and the augmentation index by pulse wave analysis. RESULTS:Plasma CoQ(10) levels, and the ratios of CoQ(10) to total cholesterol and LDL-cholesterol were similar in treated FH patients with identified LDLR mutations to mutation negative patients on equivalent doses of statin therapy (p>0.05). CoQ(10) and lipid levels were also comparable to controls not using any lipid modifying treatment. Arterial stiffness was higher in mutation negative patients (p=0.04) and there was a trend for an increase in mutation positive patients (p=0.09). ADMA was higher in the mutation positive group (p<0.01). The augmentation index corrected for age, blood pressure, and heart rate, was negatively correlated with plasma CoQ(10) within FH patients (p<0.05). CONCLUSION:Long-term, high-dose statin therapy does not lead to subnormal CoQ(10) concentrations in patients with phenotypic or genotypic FH. Arterial stiffness is elevated in FH patients compared to untreated controls, and low CoQ(10) levels are associated with increased arterial stiffness. CoQ(10) supplementation trials are warranted in FH patients.
journal_name
Atherosclerosisjournal_title
Atherosclerosisauthors
Young JM,Molyneux SL,Reinheimer AM,Florkowski CM,Frampton CM,Scott RS,George PMdoi
10.1016/j.atherosclerosis.2011.04.034subject
Has Abstractpub_date
2011-09-01 00:00:00pages
188-93issue
1eissn
0021-9150issn
1879-1484pii
S0021-9150(11)00380-7journal_volume
218pub_type
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