BACKGROUND: Coenzyme Q10 (CoQ10) is a provitamin synthesized via the HMG-CoA reductase pathway, and thus may serve as a potential marker of intrinsic HMG-CoA reductase activity. HMG-CoA reductase inhibitors (statins) decrease CoQ10, although it is unclear whether this is due to reductions in lipoproteins, which transport CoQ10. OBJECTIVES: We evaluated whether baseline plasma CoQ10 concentrations predict the lipid-lowering response to high-dose atorvastatin, and to what extent CoQ10 changes following atorvastatin therapy depend on lipoprotein changes. METHODS: Individuals without dyslipidemia or known cardiovascular disease (n=84) received atorvastatin 80 mg daily for 16 weeks. Blood samples collected at baseline and after 4, 8, and 16 weeks of treatment were assayed for CoQ10. RESULTS: Individuals with higher baseline CoQ10:LDL-C ratios displayed diminished absolute and percent LDL-C reductions at 8 and 16 weeks of atorvastatin treatment (P<0.001 to 0.01). After 16 weeks of atorvastatin, plasma CoQ10 decreased 45% from 762+/-301 ng/ml to 374+/-150 ng/ml (P<0.001). CoQ10 changes were correlated with LDL-C and apolipoprotein B changes (r=0.27-0.38, P=0.001-0.02), but remained significant when normalized to all lipoproteins. CoQ10 changes were not associated with adverse drug reactions. CONCLUSION: Baseline CoQ10:LDL-C ratio was associated with the degree of LDL-C response to atorvastatin. Atorvastatin decreased CoQ10 concentrations in a manner that was not completely dependent on lipoprotein changes. The utility of CoQ10 as a predictor of atorvastatin response should be further explored in patients with dyslipidemia.
BACKGROUND: Coenzyme Q10 (CoQ10) is a provitamin synthesized via the HMG-CoA reductase pathway, and thus may serve as a potential marker of intrinsic HMG-CoA reductase activity. HMG-CoA reductase inhibitors (statins) decrease CoQ10, although it is unclear whether this is due to reductions in lipoproteins, which transport CoQ10. OBJECTIVES: We evaluated whether baseline plasma CoQ10 concentrations predict the lipid-lowering response to high-dose atorvastatin, and to what extent CoQ10 changes following atorvastatin therapy depend on lipoprotein changes. METHODS: Individuals without dyslipidemia or known cardiovascular disease (n=84) received atorvastatin 80 mg daily for 16 weeks. Blood samples collected at baseline and after 4, 8, and 16 weeks of treatment were assayed for CoQ10. RESULTS: Individuals with higher baseline CoQ10:LDL-C ratios displayed diminished absolute and percent LDL-C reductions at 8 and 16 weeks of atorvastatin treatment (P<0.001 to 0.01). After 16 weeks of atorvastatin, plasma CoQ10 decreased 45% from 762+/-301 ng/ml to 374+/-150 ng/ml (P<0.001). CoQ10 changes were correlated with LDL-C and apolipoprotein B changes (r=0.27-0.38, P=0.001-0.02), but remained significant when normalized to all lipoproteins. CoQ10 changes were not associated with adverse drug reactions. CONCLUSION: Baseline CoQ10:LDL-C ratio was associated with the degree of LDL-C response to atorvastatin. Atorvastatin decreased CoQ10 concentrations in a manner that was not completely dependent on lipoprotein changes. The utility of CoQ10 as a predictor of atorvastatin response should be further explored in patients with dyslipidemia.
Authors: B E Bleske; R A Willis; M Anthony; N Casselberry; M Datwani; V E Uhley; S G Secontine; M J Shea Journal: Am Heart J Date: 2001-08 Impact factor: 4.749
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Authors: John C LaRosa; Scott M Grundy; David D Waters; Charles Shear; Philip Barter; Jean-Charles Fruchart; Antonio M Gotto; Heiner Greten; John J P Kastelein; James Shepherd; Nanette K Wenger Journal: N Engl J Med Date: 2005-03-08 Impact factor: 91.245
Authors: Scott M Grundy; James I Cleeman; C Noel Bairey Merz; H Bryan Brewer; Luther T Clark; Donald B Hunninghake; Richard C Pasternak; Sidney C Smith; Neil J Stone Journal: Circulation Date: 2004-07-13 Impact factor: 29.690
Authors: Christopher P Cannon; Eugene Braunwald; Carolyn H McCabe; Daniel J Rader; Jean L Rouleau; Rene Belder; Steven V Joyal; Karen A Hill; Marc A Pfeffer; Allan M Skene Journal: N Engl J Med Date: 2004-03-08 Impact factor: 91.245
Authors: J A Human; J B Ubbink; J J Jerling; R Delport; W J Vermaak; H H Vorster; J Lagendijk; H C Potgieter Journal: Clin Chim Acta Date: 1997-07-04 Impact factor: 3.786
Authors: Allen M Andres; Genaro Hernandez; Pamela Lee; Chengqun Huang; Eric P Ratliff; Jon Sin; Christine A Thornton; Marichris V Damasco; Roberta A Gottlieb Journal: Antioxid Redox Signal Date: 2013-09-20 Impact factor: 8.401