Maternal Nutritional Status at the End of Pregnancy, and Correlation among Pregnancy Weight Gain, Birth Weight and Serum Leptin Levels

산모의 임신말기 영양상태와 임신 중 체중증가, 출생체중과 혈청 렙틴 농도와의 상관관계에 관한 연구

  • Park, Jin-Hee (Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University) ;
  • Kim, Seung-Bo (Department of Gynecology College of Medicine, Kyung Hee University) ;
  • Cho, Kum-Ho (Research Institute of Clinical Nutrition, Kyung Hee University) ;
  • Choue, Ryo-Won (Department of Medical Nutrition, Graduate School of East-West Medical Science, Kyung Hee University)
  • 박진희 (경희대학교 동서의학대학원 의학영양학과) ;
  • 김승보 (경희대학교 의과대학 산부인과학교실) ;
  • 조금호 (경희대학교 임상영양연구소) ;
  • 조여원 (경희대학교 동서의학대학원 의학영양학과)
  • Published : 2006.07.31

Abstract

The necessity of adequate pregnancy weight gain for optimal pregnancy outcome has been recognized. However, the specific components of pregnancy weight gain that might be critical for fetal growth and development have not been elucidated clearly. The purpose of this study was to investigate the correlation of pregnancy weight gain and birth weight with serum leptin levels in women delivered newborns. The subjects were recruited from K university hospital. The subject's characteristic data (age $32.1\;{\pm}\;4.3\;y$, gestational age $39.5\;{\pm}\;1.1wk$, pre-pregnancy weight $58.0\;{\pm}\;8.6\;kg$, pregnancy weight gain $12.7\;{\pm}\;5.5\;kg$, newborn's birth weight $3.5\;{\pm}\;0.5\;kg$) were gathered. Maternal dietary assessment was carried out at the end of pregnancy. After delivery, blood samples were collected from 20 mother-newborn pairs. Serum levels of various lipids and leptin were analyzed. Maternal daily consumption of iron, zinc, folate were lower than the RDA of each nutrient and index of nutritional quality was less than 1 showing that the quality of maternal diet was low. The levels of serum leptin of mothers and infants were $10.2\;{\pm}\;6.7\;ng/ml$ and $1.7\;{\pm}\;0.6\;ng/ml$, respectively. The serum leptin concentrations of male infants $(1.9\;{\pm}\;0.7\;ng\;ml)$ were not different from that of females $(1.7{\pm}0.5\;ng/ml)$. A negative correlation was found between the maternal pre-pregnant BMI and weight gain during pregnancy (r = -0.54, p < 0.05). There was a positive correlation between the pregnancy weight gain and the newborn's birth weight (r=0.59, p < 0.01 There were also positive correlation between newborn's birth weight and newborn's serum leptin levels (r = 0.57, p < 0.01). No correlations were found between maternal serum leptin levels and that of newborn's. Efforts should be made to attain adequate diet and weight gain during the pregnancy to reduce the likelihood of low or over birth weight of newborns.

Keywords

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