Oxidized low density lipoprotein and inflammation in gout patients

Cell Biochem Biophys. 2014 May;69(1):65-9. doi: 10.1007/s12013-013-9767-5.

Abstract

To analyze the levels of oxidized low density lipoprotein (ox-LDL) and inflammatory cytokines in the plasma of gout patients. The levels of ox-LDL, hypersensitive C-reactive protein (hs-CRP), interleukin-1β, interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were measured in the plasma of 41 gout patients [28 in acute phase episode, 13 in intermittent phase (IP)], and in 40 healthy controls. The relationship between ox-LDL and inflammation was also explored by measuring the levels of several pro-inflammatory cytokines in the plasma. The plasma levels of ox-LDL, hs-CRP, IL-6 and TNF-α were significantly increased in patients with gout in the acute phase compared to those in the IP group and healthy controls (P < 0.05), but the levels of TGF-β were significantly lower in the acute phase group than in the IP group and healthy controls (P < 0.01). The levels of ox-LDL in the gout patients in the IP were significantly higher than those in healthy controls (P < 0.05). Correlation analysis indicated that the levels of ox-LDL were positively correlated with hs-CRP, IL-6 and TNF-α (r = 0.343, r = 0.386, r = 0.659, P < 0.01, respectively), but negatively correlated with TGF-β levels in patients in the acute phase (r = -0.240, P < 0.05). The levels of ox-LDL in gout patients were significantly higher than those in healthy controls. The changes in ox-LDL levels may be associated with enhanced inflammation in gout patients.

MeSH terms

  • Acute Disease
  • Adult
  • Aged
  • C-Reactive Protein / metabolism
  • Case-Control Studies
  • Female
  • Gout / blood*
  • Gout / physiopathology
  • Humans
  • Inflammation / blood
  • Inflammation / physiopathology
  • Interleukin-6 / blood
  • Lipoproteins, LDL / blood
  • Male
  • Middle Aged
  • Transforming Growth Factor beta / blood
  • Tumor Necrosis Factor-alpha / blood

Substances

  • IL6 protein, human
  • Interleukin-6
  • Lipoproteins, LDL
  • Transforming Growth Factor beta
  • Tumor Necrosis Factor-alpha
  • oxidized low density lipoprotein
  • C-Reactive Protein