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11-β hydroxysteroid dehydrogenase gene expression in placenta of pregnancy induced hypertension complicated by intrauterine growth retardation
Author(s): 
Pages: 1-4
Year: Issue:  18
Journal: CHINESE JOURNAL OF POSTGRADUATES OF MEDICINE

Keyword:  PlacentaHypertensionpregnancy-inducedFetal growth retardation;
Abstract: Objective To explore the expression of 11-β hydroxysteroid dehydrogenase 2 (11-β HSD2) gene in placenta of pregnancy induced hypertension (PIH) complicated by intrauterine growth retardation (IUGR) and the relationship between different expression of 11-β HSD2 in placenta and newborn's birth weight or placental weight. Methods Thirteen cases of term pregnancy mothers with PIH complicated by IUGR were served as PIH complicated by IUGR group, 22 cases of term pregnancy mothers complicated by PHI with appropriate for gestational age (AGA) infant as PIH with AGA group and 36 cases of normal controls as control group. The mRNA expression level of 11-β HSD2 gene in placenta was evaluated by RT-PCR. The level of cord serum cortisol was detected by the method of chemiluminescence. Results The 11-β HSD2 gene mRNA was expressed in placenta. The mRNA expression level of 11-β HSD2 gene in PIH complicated by IUGR group's placenta was significantly lower (0.26±0.09) than that in PIH with AGA group (0.64±0.19) and control group (0.66±0.20). The level of cord serum cortisol in PIH complicated by IUGR group was significantly higher [(71.60±20.20)μg/L] than that in PIH with AGA group [(51.00±13.80)μg/L] and control group [(49.10±14.40)μg/L]. The newborn's birth weight and placental weight in PIH complicated by IUGR group was significantly lower than those in PIH with AGA group and control group. The mRNA expression level of 11-β HSD2 gene in placenta was positively correlated with the birth weight of their newborns and placental weight. Conclusion The lower mRNA expression level of 11-β HSD2 gene in placenta may contribute to the higher cortisol level in fetal of PIH complicated by IUGR and has a negative role on the fetal development.
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