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Cord serum lipidome in prediction of islet autoimmunity and type 1 diabetes

Matej Oresic1, Peddinti Gopalacharyulu, Juha Mykkänen

  • 1VTT Technical Research Centre of Finland, Espoo, Finland. matej.oresic@vtt.fi

Diabetes
|May 1, 2013
PubMed

Insights

Infants who develop type 1 diabetes (T1D) show lower levels of specific phospholipids in umbilical cord blood. This lipidomic profile is linked to clinical T1D, not just autoimmunity development.

Area of Science:

  • Metabolomics
  • Immunology
  • Pediatrics

Background:

  • Children progressing to type 1 diabetes (T1D) exhibit reduced preautoimmune phospholipid concentrations compared to nonprogressors.
  • The association of these lipid changes with clinical T1D versus general beta-cell autoimmunity remains unclear.

Purpose of the Study:

  • To investigate the cord blood lipidome in infants who later developed T1D, islet autoantibodies, or remained healthy.
  • To determine if specific lipid alterations are associated with clinical T1D progression or the broader development of beta-cell autoimmunity.

Main Methods:

  • Analysis of umbilical cord serum lipidome using ultra-performance liquid chromatography-mass spectrometry.
  • Comparison of lipid profiles in infants who progressed to T1D (N=33), developed varying numbers of islet autoantibodies (N=31-48), and healthy controls (N=143).

Main Results:

  • Infants progressing to T1D showed a distinct cord blood lipidomic profile characterized by reduced major choline-containing phospholipids (sphingomyelins, phosphatidylcholines).
  • A seven-lipid molecular signature predicted high risk for T1D progression (OR 5.94).
  • Reduced choline-containing phospholipids were specifically associated with T1D progression, not general beta-cell autoimmunity.

Conclusions:

  • Cord blood concentrations of choline-containing phospholipids are specifically reduced in infants who progress to clinical type 1 diabetes.
  • These findings differentiate the lipid signatures associated with clinical T1D from those related to the general development of islet autoimmunity.

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