Altered levels of adipocytokines in association with insulin resistance in patients with systemic lupus erythematosus

Ken Ei Sada, Yasushi Yamasaki, Mie Maruyama, Hitoshi Sugiyama, Masahiro Yamamura, Yohei Maeshima, Hirofumi Makino

Research output: Contribution to journalArticle

117 Citations (Scopus)

Abstract

Objective. The metabolic syndrome, closely associated with cardiovascular disease, is characterized by increased insulin resistance (IR). Although accelerated atherosclerosis is frequently observed in systemic lupus erythematosus (SLE), the prevalence and significance of IR remain to be elucidated. We evaluated IR in association with plasma concentrations of adipocytokines in patients with SLE. Methods. Outpatients with SLE (n = 37) and healthy controls (n = 80) were studied. A value of the homeostasis model assessment index (HOMA-IR) > 2.0 was considered to be IR. Plasma concentrations of adiponectin and tumor necrosis factor-α (TNF-α) were measured by ELISA and leptin by radioimmunoassay. Results. HOMA-IR indices of the SLE patients were significantly higher than those of controls (2.3 ± 2.3 vs 1.3 ± 1.0, respectively; p < 0.01), although both groups exhibited a similar body mass index. The prevalence of hypertension and diabetes mellitus was significantly higher in patients with SLE compared with controls (48.6% vs 8.8% and 10.8% vs 0%). Twelve SLE patients (32%) with IR exhibited significantly higher incidence of hypertension and current proteinuria than SLE patients without IR. Plasma leptin, TNF-α, and, unexpectedly, adiponectin levels were higher in SLE patients than controls (adiponectin, 13.7 ± 5.0 vs 9.5 ± 3.9 μg/ml). Among the SLE patients, patients with IR showed significantly lower adiponectin levels than patients without IR (10.9 ± 4.6 vs 15.4 ± 4.4 μg/ml). Serum levels of adiponectin were significantly correlated inversely with HOMA-IR in SLE patients. Conclusion. Elevated levels of adiponectin in SLE, despite inverse correlation with IR, suggest the possible involvement of adiponectin in IR and alterations in its effect on insulin sensitivity.

Original languageEnglish
Pages (from-to)1545-1552
Number of pages8
JournalJournal of Rheumatology
Volume33
Issue number8
Publication statusPublished - Aug 2006

Keywords

  • Adiponectin
  • Insulin resistance
  • Systemic lupus erythematosus

ASJC Scopus subject areas

  • Rheumatology
  • Immunology and Allergy
  • Immunology

Fingerprint Dive into the research topics of 'Altered levels of adipocytokines in association with insulin resistance in patients with systemic lupus erythematosus'. Together they form a unique fingerprint.

  • Cite this