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Transforming growth factor-beta1 in fetal serum correlates with insulin-like growth factor-I and fetal growth

Eva Ostlund1, Michael Tally, Gabriel Fried

  • 1Department of Woman and Child Health, Division of Obstetrics and Gynecology, Karolinska Institute, Stockholm, Sweden.

Obstetrics and Gynecology
|September 11, 2002
PubMed

Insights

Transforming growth factor-beta1 (TGF-β1) levels in fetal serum correlate with fetal growth, with lower levels observed in intrauterine growth restriction. This study also confirms the roles of insulin-like growth factor-I and insulin-like growth factor binding protein-1 in fetal development.

Area of Science:

  • Reproductive Biology
  • Endocrinology
  • Perinatology

Background:

  • Fetal growth is a critical indicator of pregnancy health.
  • Transforming growth factor-beta1 (TGF-β1) and insulin-like growth factors (IGFs) are implicated in fetal development.
  • Understanding the relationship between these factors and fetal growth is essential for identifying potential growth abnormalities.

Purpose of the Study:

  • To determine the correlation between fetal serum transforming growth factor-beta1 (TGF-β1) levels and fetal growth.
  • To investigate the relationship between TGF-β1 and insulin-like growth factor-I (IGF-I) and insulin-like growth factor binding protein-1 (IGFBP-1) in the context of fetal growth.

Main Methods:

  • Analysis of active transforming growth factor-beta1 (TGF-β1) in cord blood serum from 68 fetuses using enzyme-linked immunosorbent assay (ELISA).
  • Comparison of TGF-β1 levels across groups: intrauterine growth restriction (IUGR), preeclampsia with IUGR, preeclampsia without IUGR, large for gestational age (LGA), and appropriate for gestational age (AGA) fetuses.
  • Correlation analysis between TGF-β1, IGF-I, IGFBP-1, and birth weight.

Main Results:

  • Transforming growth factor-beta1 (TGF-β1) concentrations were significantly correlated with birth weight.
  • Lower TGF-β1 levels were observed in fetuses with intrauterine growth restriction (IUGR) compared to appropriate for gestational age (AGA) fetuses.
  • Positive correlations were found between birth weight and both TGF-β1 (r = 0.48) and insulin-like growth factor-I (IGF-I) (r = 0.36), while a negative correlation was observed with insulin-like growth factor binding protein-1 (IGFBP-1) (r = -0.32).
  • Significant correlations were also found between TGF-β1 and IGF-I (r = 0.29) and between TGF-β1 and IGFBP-1 (r = -0.25).

Conclusions:

  • Transforming growth factor-beta1 (TGF-β1) may play a role in regulating fetal growth during pregnancy.
  • The findings support existing evidence linking insulin-like growth factor-I (IGF-I) and insulin-like growth factor binding protein-1 (IGFBP-1) to fetal growth.
  • TGF-β1 could serve as a potential biomarker for assessing fetal growth and identifying growth disturbances.
Abstract

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