足月小于胎龄儿胃饥饿素、胰岛素样生长因子-1及瘦素关系的研究

目的探讨胃饥饿素（Ghrelin）、胰岛素样生长因子-1（IGF-1）及瘦素（Leptin）在足月小于胎龄儿（SGA）中的作用及其关系。方法本院产科出生的足月SGA和适于胎龄儿（AGA）各30例,生后测量体重、身长、头围,并计算体重指数（BMI）,生后第3天测定血Ghrelin、IGF-1及Lep-tin水平。结果 SGA组体重、身长、头围、BMI均明显低于AGA组（2280±190）g比（3220±320）g,（46.3±1.8）cm比（50.5±2.0）cm,（31.8±1.1）cm比（33.6±1.1）cm,（10.6±0.8）cm比（12.6±0.9）cm,P均〈0.05]。SGA组血清IGF-1及Leptin水平均低于AGA组（49.6±10.3）μg/L比（55.3±9.9）μg/L,（2.4±0.8）μg/L比（3.0±1.0）μg/L],血浆Ghrelin水平高于AGA组（25.2±11.0）μg/L比（17.3±7.4）μg/L],P均〈0.05。两组IGF-1与体重呈正相关,Leptin与体重、身长呈正相关,Ghrelin与体重、BMI呈负相关,P均〈0.05。两组Ghrelin水平与IGF-1呈负相关,IGF-1与Leptin呈正相关;SGA组Ghrelin水平与Leptin呈负相关,P均〈0.05。结论生后早期SGA新生儿存在高Ghrelin、低IGF-1、低Leptin水平状态。Ghrelin、IGF-1及Leptin共同参与胎儿宫内营养的调节,相互起协同及拮抗作用。

The relationships among Ghrelin,insulin growth factor-1 and Leptin in the small for gestational age

Objective To investigate the function and relationship among Ghrelin,insulin growth factor-1 (IGF-1) and Leptin in the small for gestational age (SGA). Methods Thirty SGA newborn infants as study group and 30 appropriate for gestational age (AGA) newborn infants as control group born in obstetrics of our hospital were enrolled. Their body weight,length,head circumference and body mass index(BMI) at birth were measured and calculated,then the blood levels of Ghrelin,IGF-1 and Leptin at the third day were exa...