title: Effect of atorvastatin withdrawal on circulating coenzyme Q10 concentration in patients with hypercholesterolemia.
abstract: Statin therapy can reduce the biosynthesis of both cholesterol and coenzyme Q10 by blocking the common upstream mevalonate pathway. Coenzyme Q10 depletion has been speculated to play a potential role in statin-related adverse events, and withdrawal of statin is the choice in patients developing myotoxicity or liver toxicity. However, the effect of statin withdrawal on circulating levels of coenzyme Q10 remains unknown. Twenty-six patients with hypercholesterolemia received atorvastatin at 10 mg/day for 3 months. Serum lipid profiles and coenzyme Q10 were assessed before and immediately after 3 months and were also measured 2 and 3 days after the last day on the statin. After 3 months' atorvastatin therapy, serum levels of total cholesterol (TC), low-density lipoprotein cholesterol (LDL-C) and coenzyme Q10 (0.43 +/- 0.23 to 0.16 +/- 0.10 microg/mL) were all significantly reduced (all p<0.001). On day 2 after the last atorvastatin, the coenzyme Q10 level was significantly elevated (0.37 +/- 0.16 microg/mL) and maintained the same levels on day 3 (0.39 +/- 0.18 microg/mL) compared with those on month 3 (both p< 0.001), while TC and LDL-C did not significantly change within the same 3 days. These results suggest that statin inhibition of coenzyme Q10 synthesis is less strict than inhibition of cholesterol biosynthesis.
authors.affiliation: Division of Cardiology, Department of Internal Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.
authors.forename: Chih-Sheng
authors.initials: CS
authors.lastname: Chu
authors.forename: Hwang-Shang
authors.initials: HS
authors.lastname: Kou
authors.forename: Chun-Jing
authors.initials: CJ
authors.lastname: Lee
authors.forename: Kun-Tai
authors.initials: KT
authors.lastname: Lee
authors.forename: Su-Hwei
authors.initials: SH
authors.lastname: Chen
authors.forename: Wen-Chol
authors.initials: WC
authors.lastname: Voon
authors.forename: Sheng-Hsiung
authors.initials: SH
authors.lastname: Sheu
authors.forename: Wen-Ter
authors.initials: WT
authors.lastname: Lai
mesh_terms: D000069059:Atorvastatin; D002784:Cholesterol / Q000097:blood; D008076:Cholesterol, HDL / Q000097:blood; D008078:Cholesterol, LDL / Q000097:blood; D003067:Coenzymes / Q000097:blood; D005260:Female; D006538:Heptanoic Acids / Q000009:adverse effects*; D006801:Humans; D006937:Hypercholesterolemia / Q000097:blood* / Q000188:drug therapy; D008297:Male; D008875:Middle Aged; D011758:Pyrroles / Q000009:adverse effects*; D013375:Substance Withdrawal Syndrome; D014280:Triglycerides / Q000097:blood; D014451:Ubiquinone / Q000031:analogs & derivatives* / Q000097:blood
chemical_list: D008076:Cholesterol, HDL; D008078:Cholesterol, LDL; D003067:Coenzymes; D006538:Heptanoic Acids; D011758:Pyrroles; D014280:Triglycerides; D014451:Ubiquinone; D002784:Cholesterol; D000069059:Atorvastatin; C024989:coenzyme Q10