Background/Aims: The mechanisms underlying overgrowth of adipose tissue in fetuses of women with gestational diabetes mellitus (GDM) are generally unknown. Inositol phosphoglycan A-type (A-IPG), a putative second messenger of insulin, was reported to regulate lipogenesis in adipose tissue. IPGs have recently been shown to increase during normal pregnancy, in maternal and fetal compartments. Methods: 48 women with GDM and 23 healthy pregnant women were recruited for this cross-sectional study. Levels of A-IPG were assessed enzymatically in urinary specimens and correlated with clinical parameters. Results: A-IPG urinary release was lower in GDM patients (p < 0.01) and correlated positively with BMI (p < 0.01) and negatively with glycaemic control in the diabetic group (postprandial glycaemia and glycated haemoglobin, p < 0.01) in addition to a nearly significant correlation with birth weight (p = 0.08). Furthermore, a lower A-IPG urinary release was found in diabetic subjects with normal fasting glycaemia compared with those with poor fasting glycaemic control (p < 0.05). Conclusions: An altered A-IPG urinary excretion occurs in GDM with a negative correlation with poor glycaemic control. Our data suggest an interesting potential role of this molecule in maternal metabolic control during pregnancy and, possibly, in fetal growth.
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