Improvement of inflammatory responses associated with NF-kappa B pathway in kidneys from diabetic rats

Inflamm Res. 2008 May;57(5):199-204. doi: 10.1007/s00011-006-6190-z.

Abstract

Objective: The effects of fenofibrate on the kidneys of diabetic rats were investigated by measuring the inflammatory responses associated with transcription factor nuclear factor kappa-B (NF-kappa B) pathway.

Methods: Male Wistar rats were randomly divided into 3 groups: normal control, diabetes control and diabetes + fenofibrate (10 in each group). The expression of NF-kappaB p65, plasminogen activator inhibitor-1 (PAI-1), and intercellular adhesion molecule-1 (ICAM-1) in renal cortex was detected by Western blot, RT-PCR, and immunohistochemistry, respectively. Blood lipid profiles, glucose, and urine albumin were measured as well.

Results: The expression of NF-kappa B p65, PAI-1, and ICAM-1 was significantly higher in the diabetes control than those in the normal control, and treatment with fenofibrate inhibited the increased expression of these factors in kidneys by 48.18 %, 35.04 %, and 26.41 %, respectively when compared with the diabetes control, although they were still higher in diabetes + fenofibrate than those in the normal control. Correspondingly, the profiles of lipid were significantly elevated in the diabetes control compared with the normal control, and decreased significantly in diabetes + fenofibrate.

Conclusions: Fenofibrate exhibited a downregulating effect on the NF-kappa B pathway in diabetic kidneys, implying that fenofibrate could be a potential treatment for diabetic nephropathy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Diabetes Mellitus, Experimental / complications
  • Diabetes Mellitus, Experimental / metabolism*
  • Diabetes Mellitus, Experimental / physiopathology
  • Diabetic Nephropathies / drug therapy
  • Diabetic Nephropathies / etiology
  • Disease Models, Animal
  • Fenofibrate / pharmacology*
  • Fenofibrate / therapeutic use
  • Hypolipidemic Agents / pharmacology*
  • Hypolipidemic Agents / therapeutic use
  • Inflammation / drug therapy
  • Inflammation / metabolism*
  • Inflammation / physiopathology
  • Intercellular Adhesion Molecule-1 / metabolism
  • Kidney / drug effects
  • Kidney / metabolism*
  • Kidney / physiopathology
  • Male
  • NF-kappa B / metabolism*
  • Plasminogen Activator Inhibitor 1 / metabolism
  • Random Allocation
  • Rats
  • Rats, Wistar
  • Signal Transduction / physiology
  • Streptozocin

Substances

  • Hypolipidemic Agents
  • NF-kappa B
  • Plasminogen Activator Inhibitor 1
  • Intercellular Adhesion Molecule-1
  • Streptozocin
  • Fenofibrate