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08:33
An Ex vivo Culture System to Study Thyroid Development
Published on: June 6, 2014
Normal thyroid function in young adults who were born very preterm.
Terezka S Mollee1, Martijn J J Finken, Mirjam M van Weissenbruch
1Department of Pediatrics, VU University Medical Center, Amsterdam, The Netherlands.
Journal of Pediatric Endocrinology & Metabolism : JPEM
|February 8, 2012
Summary
Young adults born preterm exhibit normal thyroid function, with slightly elevated free thyroxine (fT4) but typical thyrotropin (TSH) levels. This study followed individuals born before 32 weeks gestation into adulthood.
Area of Science:
- Endocrinology
- Neonatology
- Pediatric Health
Background:
- Previous studies suggest potential thyrotropin (TSH) elevation in preterm infants.
- Longitudinal data on thyroid function in adults born preterm are scarce.
- Understanding long-term endocrine outcomes for preterm birth is crucial.
Purpose of the Study:
- To evaluate thyroid function in young adults born preterm.
- To compare thyroid function between preterm infants born appropriate-for-gestational-age (AGA) and small-for-gestational-age (SGA) with controls.
- To assess serum concentrations of TSH and free thyroxine (fT4) at age 21.
Main Methods:
- Cross-sectional study measuring TSH, fT4, and body composition.
- Participants included young adults born preterm (AGA, n=29; SGA, n=28) and non-preterm controls (n=30).
- Measurements were taken at 21 years of age.
Main Results:
- All participants had TSH and fT4 concentrations within normal ranges.
- Preterm-born subjects showed slightly higher free T4 levels compared to controls (p=0.04).
- No significant differences in TSH concentrations were observed between groups.
Conclusions:
- Young adults born preterm demonstrate normal overall thyroid function.
- Slightly elevated fT4 in preterm-born young adults warrants further investigation.
- Preterm birth does not appear to cause lasting thyroid dysfunction by early adulthood.
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