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Serum leptin levels in twins and singleton newborns
E Esra Onal1, Füsun Kitapçi Uysal, Peyami Cinaz
1Department of Neonatology, Gazi University Medical School, Turkey. esra_onal@hotmail.com
Journal of Pediatric Endocrinology & Metabolism : JPEM
|July 26, 2003
Summary
Neonatal leptin levels are significantly lower in twins compared to singletons, suggesting multiple pregnancy impacts fetal development and hormone production. This finding highlights potential differences in placental function and nutrient transfer during twin gestations.
Area of Science:
- Endocrinology
- Perinatology
- Neonatal Research
Background:
- Leptin, a hormone primarily produced by adipose tissue, is also synthesized by the human placenta.
- Placental leptin is implicated in regulating fetal growth and development.
- The influence of multiple gestations on neonatal leptin levels remains largely unexplored.
Purpose of the Study:
- To investigate whether multiple pregnancy, specifically twin gestation, affects serum leptin concentrations in newborns.
- To compare neonatal leptin levels between infants from twin pregnancies and those from singleton pregnancies.
Main Methods:
- A cohort of 30 newborns was studied, divided into two groups: 15 infants from twin pregnancies and 15 infants from singleton pregnancies (control group).
- All infants were appropriate for gestational age (AGA).
- Serum leptin concentrations were measured 24 hours after delivery.
Main Results:
- No significant differences were observed in birth weight, gestational age, or sex ratio between the twin and singleton groups.
- Neonatal serum leptin concentrations were significantly lower in infants from twin pregnancies (1.13 ± 0.35 ng/ml) compared to those from singleton pregnancies (4.27 ± 0.63 ng/ml).
- The difference in leptin levels was statistically significant (p < 0.001).
Conclusions:
- Twin pregnancy appears to be a significant factor influencing serum leptin concentrations in newborn infants.
- Lower neonatal leptin levels in twins may indicate altered placental function or nutrient availability during multiple gestations.
- Further research is warranted to elucidate the mechanisms behind these observed differences.