Fetal insulin-like growth factor (IGF)-I, IGF-II, and ghrelin in association with birth weight and postnatal growth in monozygotic twins with discordant growth.
J Clin Endocrinol Metab
; 90(4): 2270-4, 2005 Apr.
Article
en En
| MEDLINE
| ID: mdl-15687342
ABSTRACT
OBJECTIVE:
To investigate the relative contribution of genetic (fetal) vs. environmental (maternal/placental) factors on growth, we studied monozygotic twins with intertwin birth weight difference. PATIENTS ANDMETHODS:
Twenty-seven twins (15 with discordant growth) who have been treated for severe twin-to-twin transfusion syndrome by laser coagulation were studied. Cord blood samples were analyzed for IGF-I, IGF-II, IGF-binding protein-2, and ghrelin. Intertwin difference (Delta) of birth weight was correlated to Delta of the parameters analyzed. The Delta weight after 1 yr was correlated with Delta birth weight and all hormones.RESULTS:
The Delta birth weight was positively correlated with Delta IGF-I (r = 0.66; P < 0.0002) and negatively correlated with Delta IGF-binding protein-2 levels (r = -0.68; P < 0.001) but with neither Delta IGF-II nor Delta ghrelin. There was a strong intertwin correlation for all hormones. By comparing the growth in the first year, we found an overall reduction of the relative weight difference between the twins of 57%. ANOVA was used to calculate factors for prediction of postnatal catch-up growth. Besides the birth weight difference (R2= 0.84; P < 0.0001), only ghrelin was of prognostic value for postnatal catch-up growth (R2= 0.94; P = 0.0035).CONCLUSION:
These data confirm the importance of IGF-I in contrast to IGF-II for fetal weight. Additionally, ghrelin seems to be involved in fetal and probably postnatal growth.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Gemelos Monocigóticos
/
Peso al Nacer
/
Factor I del Crecimiento Similar a la Insulina
/
Factor II del Crecimiento Similar a la Insulina
/
Hormonas Peptídicas
/
Sangre Fetal
/
Crecimiento
Tipo de estudio:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Female
/
Humans
/
Pregnancy
Idioma:
En
Revista:
J Clin Endocrinol Metab
Año:
2005
Tipo del documento:
Article
País de afiliación:
Alemania