胎盘肥胖基因表达与胎儿宫内生长发育相关性研究  

Placental Leptin Correlates with Intrauterine Fetal Growth and Development

作　　者：贲晓明[1] 秦玉明[1] 喻文亮[2] 张伟利[1] 蔡威[1] 吴圣楣[1] 

机构地区：[1]上海第二医科大学附属新华医院上海市儿科医学研究所 [2]南京江北人民医院儿科

出　　处：《中华围产医学杂志》2002年第1期60-63,共4页Chinese Journal of Perinatal Medicine

摘　　要：目的　探讨胎盘肥胖基因表达与脐血瘦素水平和胎儿宫内生长发育的关系。　方法　采用逆转录定量聚合酶链反应 (RT- PCR)检测 40例胎盘肥胖基因 m RNA相对表达水平 ,采用放射免疫法检测脐血肥胖基因蛋白 (瘦素 )水平 ,采用 Ponderal指数 [PI=10 0×体重 (g) /身长 (cm) 3 ]估测新生儿营养状态。　结果　胎盘组织肥胖基因呈现高效表达 ,表达水平与孕母脂肪组织肥胖基因表达水平相似 ;13例小于胎龄儿胎盘组织瘦素 - m RNA相对表达水平为 0 .44 9± 0 .0 2 6 ,显著低于 15例适于胎龄儿的表达水平 [0 .487± 0 .0 42 (P<0 .0 5 ) ];12例大于胎龄儿胎盘组织瘦素 - m RNA相对表达水平为 0 .5 2 5± 0 .0 2 9,显著高于适于胎龄儿 (P<0 .0 5 )。胎盘肥胖基因 m RNA相对表达水平与脐血瘦素水平显著相关 (r=0 .6 1,P<0 .0 5 ) ,与新生儿出生体重和 Ponderal指数显著相关 (r=0 .6 0和0 .5 6 ,P<0 .0 5 )。　结论　胎盘是脐血瘦素重要来源 。Objective To study the role of placental leptin in intrauterine cord leptin production and its relationship with neonatal anthropometry. Methods Forty women and their babies were enrolled in this study. Placental tissue was obtained from mothers and assayed for leptin mRNA by reverse transcription/polymerase chain reaction (RT/PCR). Blood was taken from the umbilical cord of the babies at delivery. Serum leptin was measured by radio-immunoassay. Neonatal anthropometric measurements were recorded within 48 hours after delivery. Linear regression analysis was used to explore the relationship between placental leptin mRNA, serum leptin concentrations and anthropometric measures. Results Placental tissue expressed leptin mRNA at comparable or greater levels than adipose tissue. The placenta of the small for gestational age (SGA) neonates expressed leptin mRNA at significantly lower levels than that of the appropriate for gestational age (AGA) neonates (P=0.042), while the placenta of the large for gestational age (LGA) neonates expressed leptin mRNA at significantly higher levels than that of the AGA neonates (P=0.03). Placental leptin mRNA expression levels correlated with leptin concentrations in cord blood (r=0.61), newborn birth weight (r=0.60) and Ponderal Index (r=0.56). Conclusions Placenta provides a source of leptin for the growing fetus, and this placental leptin might be a growth factor in intrauterine fetal development.

关 键 词：瘦素 胎盘 胎儿发育 基因表达 肥胖基因 相关性 mRNA 

分 类 号：R714.5[医药卫生—妇产科学]