Gestational diabetes & diabetes in pregnancy

Placental IGFBP1 levels during early pregnancy and the risk of insulin resistance and gestational diabetes

Nat MedPublished Mechanistic study

Authors' conclusion

These results implicate IGFBP1 in the glycemic physiology of pregnancy and suggest a role for placental IGFBP1 deficiency in GDM pathogenesis.

Study context

Population
Pregnant women; 434 human placentas profiled, plus additional pregnancy cohorts
Participants
434 placentas
Outcome
Placental IGFBP1 and insulin sensitivity
Follow-up
≈26 weeks gestation
Methodological detailstranscriptomic profiling, multiple pregnancy cohorts
  • Transcriptomic profiling
  • Multiple pregnancy cohorts

Main finding

As reported in the abstract

~26 weeks gestation
  • Positive association between placental IGFBP1 expression and insulin sensitivity
  • Higher circulating IGFBP1 associated with greater insulin sensitivity (lesser insulin resistance), in the same cohort and in two additional pregnancy cohorts
  • Low circulating IGFBP1 in early pregnancy predicted subsequent gestational diabetes mellitus (GDM) diagnosis in two cohorts

Further findings

Circulating IGFBP1 rose over pregnancy and declined postpartum, suggesting a placental or decidual source

Original publication

Placental IGFBP1 levels during early pregnancy and the risk of insulin resistance and gestational diabetes. Nat Med. Published 16 April 2024. doi:10.1038/s41591-024-02936-5

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