Cord Blood Betatrophin Levels Rise in GDM Neonates
Cord blood betatrophin and insulin concentrations in term neonates
Cord blood betatrophin and insulin levels are significantly elevated in term neonates born to mothers with gestational diabetes mellitus, according to a comparative cross-sectional study conducted over 18 months at a tertiary care maternity and neonatal hospital.
Key Clinical Takeaways:
- Median cord blood betatrophin levels reached 0.810 ng/mL in neonates born to mothers with gestational diabetes compared to 0.526 ng/mL in normoglycemic controls.
- Median cord blood insulin levels measured 12.8 µIU/mL in the gestational diabetes group versus 4.6 µIU/mL in the non-gestational diabetes group.
- Multivariable linear regression analysis confirmed that gestational diabetes mellitus remains independently associated with higher cord blood betatrophin and insulin levels.
Study design and biomarker measurements in 150 neonates
The hospital-based comparative cross-sectional study evaluated 150 term neonates divided equally into two cohorts. Seventy-five neonates were born to mothers diagnosed with gestational diabetes mellitus, while the remaining 75 neonates were born to mothers with normal glucose tolerance. Researchers measured cord blood betatrophin and insulin levels using enzyme-linked immunosorbent assay (ELISA) testing. Data analysis utilized the Mann–Whitney U test to compare biomarker distributions between the two groups, and Spearman’s correlation assessed the directional relationship between the two measured peptides.
Univariate and multivariable linear regression analyses identified factors independently associated with the observed biomarker concentrations. The analysis established that gestational diabetes independently predicted higher cord blood betatrophin, yielding a beta coefficient of 0.35 with a 95% confidence interval ranging from 0.18 to 0.53 and a p-value of 0.045. For insulin levels, gestational diabetes yielded a multivariable beta coefficient of 10.21 with a 95% confidence interval from 6.66 to 13.76 and a p-value below 0.001. A modest but significant positive correlation emerged between cord blood betatrophin and insulin levels, indicated by a correlation coefficient of r = 0.291 at p < 0.001.
Evaluating fetal metabolic adaptation and open clinical questions
Gestational diabetes mellitus is known to alter fetal metabolic adaptation during pregnancy. While betatrophin has been widely implicated in systemic glucose metabolism, its precise physiological role in pregnancies complicated by gestational diabetes remains unclear based on current clinical findings.
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