Amelioration of serum 8-OHdG level by enzyme replacement therapy in patients with Fabry cardiomyopathy

Biochem Biophys Res Commun. 2017 Apr 29;486(2):293-299. doi: 10.1016/j.bbrc.2017.03.030. Epub 2017 Mar 12.

Abstract

Objectives: The level of 8-hydroxy-2-deoxyguanosise (8-OHdG) is a marker of oxidative stress. The objective of this study was to evaluate the effect of enzyme replacement therapy (ERT) on the level of 8-OHdG in patients with Fabry cardiomyopathy and the clinical evolution of Fabry cardiomyopathy.

Methods: We measured the serum levels of 8-OHdG in 20 healthy control and 22 patients with Fabry cardiomyopathy before and after ERT.

Results: The mean lysoGb3 and 8-OHdG levels was significantly increased in patients with Fabry cardiomyopathy compared with that of control subjects (lysoGb3, 3.6 ± 1.1 nM vs. 0.4 ± 0.1 nM, p < 0.01; 8-OHdG, 4.5 ± 0.5 ng/mL vs. 3.4 ± 0.4 ng/mL, P < 0.05). The mean lysoGb3 and 8-OHdG levels was significantly reduced after ERT for 14.2 months (lysoGb3, 3.6 ± 1.1 nM vs. 2.9 ± 1.1 nM, P < 0.05; 8-OHdG, 4.5 ± 0.5 ng/mL to 4 ± 0.4 ng/mL, P < 0.05). These changes were accompanied by decreases in LVM and LVMI.

Conclusions: We demonstrated that the serum 8-OHdG levels is increased in patients with Fabry cardiomyopathy (FC) and that successful management of FC with ERT is associated with a decrease in this oxidative stress marker. Serum 8-OHdG levels can be used not only as a noninvasive biomarker of oxidative stress in patients with FC but also an objective and quantitative parameter in the follow-up of patients during ERT.

Keywords: Cardiomyopathy; ERT; Fabry disease; Oxidative stress.

MeSH terms

  • 8-Hydroxy-2'-Deoxyguanosine
  • Aged
  • Biomarkers / blood
  • Cardiomyopathies / blood
  • Cardiomyopathies / complications
  • Cardiomyopathies / diagnosis
  • Cardiomyopathies / drug therapy*
  • Case-Control Studies
  • Deoxyguanosine / analogs & derivatives*
  • Deoxyguanosine / blood
  • Enzyme Replacement Therapy*
  • Fabry Disease / blood
  • Fabry Disease / complications
  • Fabry Disease / diagnosis
  • Fabry Disease / drug therapy*
  • Female
  • Glycolipids / blood*
  • Humans
  • Male
  • Middle Aged
  • Monitoring, Physiologic
  • Oxidative Stress
  • Sphingolipids / blood*
  • Treatment Outcome
  • alpha-Galactosidase / therapeutic use*

Substances

  • Biomarkers
  • Glycolipids
  • Sphingolipids
  • globotriaosyl lysosphingolipid
  • 8-Hydroxy-2'-Deoxyguanosine
  • alpha-Galactosidase
  • Deoxyguanosine