Oxidative stress, endothelial function and coenzyme Q10.
Reactive oxygen species seem to play an important role in vascular homeostasis. In conditions of high oxidative stress, such as chronic heart failure and multiple coronary risk factors, the rate of inactivation of nitric oxide to peroxynitrite by superoxide anions may be reduced by CoQ10, which can also protect against nitrosative damage. CoQ10 may also influence vascular function indirectly via inhibition of oxidative damage to LDL. Patients with lower levels of extracellular superoxide dismutase (ecSOD) demonstrate greater improvements than patients with normal ec-SOD levels, suggesting that the higher the oxidative stress the greater the improvement in the endothelium-dependent relaxation after the administration of a compound with antioxidant properties like CoQ10. Future studies are needed to inquire whether these effects may translate into benefits in clinical practice.
Belardinelli
Romualdo
R
Cardiologia Riabilitativa Lancisi, Azienda Ospedali Riuniti, Ancona, Italy.
Tiano
Luca
L
Littarru
Gian Paolo
GP
D003327:Coronary Disease / Q000188:drug therapy / Q000503:physiopathology; D004730:Endothelium, Vascular / Q000502:physiology*; D006801:Humans; D017202:Myocardial Ischemia / Q000188:drug therapy / Q000503:physiopathology; D018384:Oxidative Stress / Q000502:physiology*; D013482:Superoxide Dismutase / Q000378:metabolism; D014451:Ubiquinone / Q000031:analogs & derivatives* / Q000097:blood / Q000627:therapeutic use
D014451:Ubiquinone; D013482:Superoxide Dismutase; C024989:coenzyme Q10