Association between serum ferritin and circulating oxidized low-density lipoprotein levels in patients with type 2 diabetes.

Abstract:

:The oxidative modification of low-density lipoproteins (LDL) plays a central role in the initiation and acceleration of atherosclerosis. Iron plays a part in the formation of highly toxic free radicals such as hydroxide and superoxide anions, which can induce lipid peroxidation. We investigated whether serum iron status was associated with circulating oxidized LDL (oxLDL) levels in type 2 diabetic patients, in whom oxidative stress and susceptibility to lipid oxidation were supposedly increased. Serum ferritin levels were significantly correlated with plasma oxLDL concentrations in both male and female patients (p<0.02 and p<0.05, respectively). No correlation was detected between ferritin and LDL-cholesterol (LDL-C) concentrations despite the close correlation between LDL-C and oxLDL concentrations (p<0.0001). Stepwise regression analysis showed that ferritin concentration was an independent positive determinant of oxLDL level, in addition to triglyceride concentration, body mass index and sex. This is the first report to show that serum ferritin is associated with circulating oxLDL levels in patients with type 2 diabetes. Further work is required to establish a causative link between iron excess and the development of diabetic vascular complications.

journal_name

Endocr J

journal_title

Endocrine journal

authors

Ikeda Y,Suehiro T,Yamanaka S,Kumon Y,Takata H,Inada S,Ogami N,Osaki F,Inoue M,Arii K,Hashimoto K

doi

10.1507/endocrj.k06-010

subject

Has Abstract

pub_date

2006-10-01 00:00:00

pages

665-70

issue

5

eissn

0918-8959

issn

1348-4540

pii

JST.JSTAGE/endocrj/K06-010

journal_volume

53

pub_type

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