Amniotic Fluid Angiogenic and Inflammatory Factor Profiling in Foetal Down Syndrome

Area of Science:

• Biochemistry
• Genetics
• Prenatal Diagnostics

Background:

• Angiogenic factors are proteins implicated in fetal chromosomal abnormalities.
• Down syndrome (DS) is a common genetic disorder with potential links to angiogenic pathways.

Purpose of the Study:

• To quantify concentrations of 60 angiogenic factors in amniotic fluid from pregnancies with fetal Down syndrome.
• To identify specific angiogenic factors altered in the presence of fetal DS.

Main Methods:

• A case-control study involving 12 women with fetal DS and 12 healthy controls.
• Amniotic fluid samples collected between 15-18 weeks of gestation.
• Simultaneous measurement of 60 angiogenic factors using a protein macroarray.

Main Results:

• Significant reductions in 14 angiogenic factors were observed in the amniotic fluid of fetuses with DS compared to controls.
• Key decreased factors include leptin, angiopoietin 1 (ANG-1), angiostatin, EGF, IL-1b, IL-4, IL-12p40, MCP-2, MMP-1, MMP-9, PECAM-1, TGF alpha, VEGFR2, and VEGFR3.
• These alterations suggest a potential role for these factors in the biological mechanisms underlying DS.

Conclusions:

• Angiogenic factors may be involved in the pathogenesis of Down syndrome.
• Further research with larger cohorts is needed to confirm the potential of these factors as biochemical markers for DS.