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Soluble CD40 ligand is elevated in type 1 diabetic nephropathy but not predictive of mortality, cardiovascular events

Maria Lajer1, Inge Tarnow, Alan D Michelson

  • 1Steno Diabetes Center, Gentofte, Denmark. Mlaj@steno.dk

Platelets
|August 13, 2010
PubMed

Insights

Plasma soluble CD40 ligand (sCD40L) is elevated in type 1 diabetes with nephropathy but does not predict mortality or kidney function decline. This finding is crucial for understanding cardiovascular and renal risks in diabetic patients.

Area of Science:

  • Endocrinology
  • Nephrology
  • Cardiology
  • Immunology

Background:

  • Soluble CD40 ligand (sCD40L), derived from platelets, is implicated in atherothrombosis and promotes inflammation.
  • Diabetic nephropathy in type 1 diabetes (T1DM) is a major risk factor for cardiovascular disease and end-stage renal disease (ESRD).

Purpose of the Study:

  • To investigate the predictive value of plasma sCD40L for all-cause mortality, cardiovascular mortality and morbidity, ESRD progression, and glomerular filtration rate (GFR) decline.
  • To assess whether elevated sCD40L levels in T1DM patients with nephropathy are associated with adverse clinical outcomes.

Main Methods:

  • A prospective, observational follow-up study involving 443 T1DM patients with diabetic nephropathy and 421 T1DM patients with persistent normoalbuminuria.
  • Plasma sCD40L levels were measured using ELISA.
  • Patients were followed for a median of 8.1 years for mortality, cardiovascular events, and kidney function parameters.

Main Results:

  • Plasma sCD40L levels were significantly higher in T1DM patients with diabetic nephropathy compared to normoalbuminuric patients (p = 0.004).
  • In both normoalbuminuric and nephropathic T1DM patients, sCD40L levels did not significantly predict all-cause mortality or fatal/non-fatal cardiovascular disease.
  • Elevated sCD40L did not predict the development of ESRD or the rate of GFR decline in patients with T1DM.

Conclusions:

  • Plasma sCD40L is elevated in T1DM nephropathy.
  • sCD40L is not a significant predictor of all-cause mortality, cardiovascular outcomes, or kidney function deterioration in patients with type 1 diabetes and nephropathy.

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