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Fibrinogen-like protein 2 expression correlates with microthrombosis in rats with type 2 diabetic nephropathy

Guanhua Su1, Kun Liu, Yan Wang

  • 1Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, Hubei, China.

Journal of Biomedical Research
|April 5, 2013
PubMed

Insights

Fibrinogen-like protein 2 (fgl2) expression increases in diabetic nephropathy, correlating with microthrombosis. Elevated fgl2 may drive renal ischemia and hypertension in diabetic kidney disease.

Area of Science:

  • Nephrology
  • Vascular Biology
  • Biochemistry

Background:

  • Fibrinogen-like protein 2 (fgl2) is a prothrombinase implicated in microthrombosis.
  • Diabetic nephropathy is characterized by microvascular damage and thrombosis.
  • Understanding fgl2's role in diabetic kidney disease is crucial for therapeutic development.

Purpose of the Study:

  • To investigate fgl2 expression in rat kidneys with streptozocin-induced type 2 diabetic nephropathy.
  • To determine the correlation between fgl2 expression and renal microthrombosis.
  • To explore the relationship between fgl2, TNF-α, and diabetic nephropathy.

Main Methods:

  • Reverse transcription-polymerase chain reaction (RT-PCR) and immunoblotting to quantify fgl2 mRNA and protein.
  • Enzyme-linked immunosorbent assays (ELISA) to measure circulating TNF-α levels.
  • Histopathological analysis to assess microthrombosis in renal capillaries.

Main Results:

  • fgl2 mRNA and protein levels were significantly elevated in glomerular and tubulointerstitial capillaries of diabetic rats compared to controls.
  • A significant positive correlation was observed between fgl2 expression and the extent of microthrombosis in renal tissues (r = 0.543, P < 0.01).
  • Circulating TNF-α levels were elevated in diabetic rats and strongly correlated with fgl2 expression (r = 0.871, P < 0.01).

Conclusions:

  • Increased fgl2 expression in diabetic nephropathy contributes to renal microthrombosis.
  • fgl2 activation may play a role in the pathogenesis of glomerular hypertension and renal ischemia in diabetes.
  • Targeting fgl2 could be a potential therapeutic strategy for diabetic kidney disease.
Keywords:
diabetic nephropathyfibrinogen-like protein 2microthrombosistumor necrosis factor-αtype 2 diabetes

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