[Umbilical cord serum levels of insulin-like growth factor-1, insulin and growth hormone in neonates with intrauterine growth retardation].
OBJECTIVE
To investigate the levels of insulin-like growth factor-1(IGF-1), insulin (INS)and growth hormone (GH) in the cord blood of neonates with intrauterine growth retardation (IUGR), and to assess the effects of the endocrine environment on IUGR.


METHODS
Sixty-three newborn infants were selected, including 37 males and 26 females. According to birth weight, they were classified into IUGR group (n=33) and control group (normal birth weight, n=30). The levels of IGF-1, INS and GH in the cord blood were measured.


RESULTS
Umbilical cord serum levels of IGF-1 and INS in the IUGR group were significantly lower than those in the control group. In contrast, umbilical cord serum GH levels in the IUGR group were significantly higher than those in the control group. Birth weight was positively correlated with umbilical cord serum IGF-1 levels (r=0.625, P<0.01) and negatively correlated with GH levels (r=-0.257, P<0.05). Gestational age was positively correlated with umbilical cord serum IGF-1 levels (r=0.271, P<0.05). Multiple linear stepwise regression analysis showed that umbilical cord serum IGF-1 and INS levels were significant influential factors for birth weight.


CONCLUSIONS
The endocrine environment controls the growth and development of the fetus. The levels of IGF-1 and INS in the cord blood are associated with fetal weight. The low umbilical cord serum levels of IGF-1 may be one of the reasons for resulting in IUGR.
Department of Clinical Laboratory, Second Affiliated Hospital of Nantong University, Nantong, Jiangsu, China. zhaopinghonghong@163.com
Ping
P
Zhao
Xiu-Lin
XL
Zhang
Chao
C
Yu
Xiao-Yan
XY
Lu
Yong-Mei
YM
Wang
D005260:Female; D005312:Fetal Blood / Q000737:chemistry*; D005317:Fetal Growth Retardation / Q000097:blood*; D019382:Human Growth Hormone / Q000097:blood*; D006801:Humans; D007231:Infant, Newborn; D007328:Insulin / Q000097:blood*; D007334:Insulin-Like Growth Factor I / Q000032:analysis*; D008297:Male; D012044:Regression Analysis
D007328:Insulin; D019382:Human Growth Hormone; D007334:Insulin-Like Growth Factor I