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Korean Journal of Obstetrics & Gynecology 2009;52(4):420-428.
Published online April 1, 2009.
Study of umbilical cord blood adiponectin, IGF-I, IGFBP-1, insulin and leptin levels in small for gestational age neonates at birth.
Noh Mi Choi, Mi Hye Park, Young Joo Kim, Jung Ja Ann, Sun Hee Chun
1Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Cheil General Hospital & Women's Healthcare Center, Kwandong University College of Medicine, Korea.
2Department of Obstetrics and Gynecology, Department of Medicine, The Graduate School of Ewha Womans' University, Korea. ewhapmh@ewha.ac.kr
Intrauterine growth is influenced by multiple factors like genetic, nutritional, environmental and hormonal factors. As birth weight is reported to be related to perinatal morbidity and mortality, we aimed to compare umbilical cord blood adiponectin, IGF-I, IGFBP-1, insulin and leptin levels between small for gestational age (SGA) and appropriate for gestational age (AGA) neonates at birth to investigate the influence of these factors on birth weight and ponderal index. METHODS: We investigated retrospectively 30 pregnant women with SGA and 30 pregnant women with AGA who delivered at Ewha Womans University Hospital and their babies from January 2007 to December 2007. Fetal umbilical cord venous blood adiponectin, IGF-I, IGFBP-1, insulin and leptin levels from SGA and AGA neonates were obtained at the time of delivery. The definition used to identify cases of SGA was individual birth weight ratio of less than 10th percentile and the definition of ponderal index (PI) was [BW (g)/ (height (cm))3]x100. RESULTS: Umbilical cord blood adiponectin, IGF-I and IGF/IGFBP ratio were significantly lower (P<0.05) in SGA than AGA. And umbilical cord blood IGFBP-1 were significantly higher (P<0.05) in SGA than AGA. But there was no significant difference in umbilical cord blood insulin and leptin levels between SGA and AGA neonates. Positive correlation was noted between adiponectin and IGF-I, IGF/IGFBP ratio, insulin and leptin. Negative correlation was noted between adiponectin and IGFBP-1, IGF-I and IGFBP-1. On multiple regression analysis, adiponectin and IGF-I were significant factors associated with body weight (BW), but only IGFBP-1 was significant factor associated with PI. CONCLUSION: These results suggest that fetal adiponectin, IGF-I, IGFBP-1 may have an important role in regulation of intrauterine growth and we will expect that evaluation of adiponectin and IGF-I in SGA may be helpful in prediction of neonatal outcome, and IGFBP-1 may be useful in diagnosis of asymmetric intrauterine growth retardation (IUGR).
Key Words: Small for gestational age, Adiponectin, IGF-I, IGFBP-1, Insulin, Leptin

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