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Plasma thrombomodulin in renal disease: effects of renal function and proteinuria

R Rustom1, H Leggat, H R Tomura

  • 1Regional Renal Unit, Liverpool, UK.

Clinical Nephrology
|January 7, 1999
PubMed

Insights

Plasma thrombomodulin (PTM) levels increase with declining kidney function and worsening proteinuria. PTM measurements require adjusted interpretation in patients with renal impairment.

Area of Science:

  • Nephrology
  • Vascular Biology
  • Biochemistry

Background:

  • Plasma thrombomodulin (PTM) is a potential marker for vascular endothelial damage.
  • PTM levels are elevated in active vasculitis.
  • PTM is a mixture of glycoproteins with variable renal excretion, suggesting potential influence of kidney function and proteinuria on its levels.

Purpose of the Study:

  • To investigate the relationship between plasma thrombomodulin levels and renal function.
  • To examine the impact of proteinuria on plasma thrombomodulin levels.
  • To assess how varying renal pathology affects PTM measurements.

Main Methods:

  • PTM levels were measured in 89 renal patients with diverse renal pathologies.
  • Patients included those on hemodialysis (HD) and those with variable renal function and proteinuria.
  • PTM levels were correlated with indicators of renal function and proteinuria.

Main Results:

  • PTM levels demonstrated an inverse correlation with renal function, increasing as kidney function declined.
  • PTM levels were highest in patients undergoing hemodialysis.
  • PTM levels appeared to increase with proteinuria, with a more pronounced effect in hypertensive and diabetic nephropathy compared to primary glomerulonephritis.

Conclusions:

  • Plasma thrombomodulin measurements are significantly influenced by both renal function and proteinuria.
  • Interpretation of PTM levels should consider the degree of renal impairment.
  • Abnormal PTM level thresholds may need adjustment based on declining renal function.

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