Clinical and Experimental Pediatrics

The Korean Pediatric Society (대한소아청소년과학회)
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Quantification of endothelin-1 in human umbilical venous endothelial cell culture supernatants of small for gestational age and preeclampsia neonates

부당 경량아 및 전자간증 산모의 신생아 제대혈관내피세포의 endothelin-1 발현 비교

  • Cho, Won Kyoung (Department of Pediatrics, College of Medicine, Catholic University) ;
  • Kim, So Young (Department of Pediatrics, College of Medicine, Catholic University) ;
  • Chun, Chung Sik (Department of Pediatrics, College of Medicine, Catholic University)
  • 조원경 (가톨릭대학교 의과대학 소아과학교실) ;
  • 김소영 (가톨릭대학교 의과대학 소아과학교실) ;
  • 전정식 (가톨릭대학교 의과대학 소아과학교실)
  • Received : 2007.10.22
  • Accepted : 2007.11.27
  • Published : 2007.12.15
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Abstract

Purpose : It was generally accepted now a days that the pathogenesis of preeclampsia, small for gestational age (SGA), intrauterine growth retardation and fetal origin of adult diseases were related with a endothelial cell dysfunction. The purpose of this study was to know the relation of such diseases by assessing the level of endothelin-1. Methods : SGA babies, newborns of preeclampsia and normal control mother were included in this study. Isolated endothelial cells were centrifugated and mixed with media in $37^{\circ}C$, 5% $CO_2$ to obtain confluent monolayer of cultured human umbilical venous endothelial cell (HUVEC). Endothelin-1 levels were determined by Endothelin-1 colorimetric (EIA) Kits. We examined the endothelin-1 level in the HUVEC supernatants from SGA baby, and newborns from preeclampsia as well as normal mother. Also, we compared the endothelin-1 level of cultured normal HUVEC incubated with serum from cord blood of SGA, babies of preeclampsia or normal control mother. Results : The endothelin-1 levels in cultured HUVEC supernatants of three groups showed no significant difference but the endothelin-1 levels of cultured normal HUVEC incubated with serum from preeclampsia mother or SGA mother was significantly higher than those from newborns of control mothers (P<0.05). Conclusion : These findings suggest that there may be the factor which affect the endothelin-1 level in serum of cord blood from SGA and preeclampsia.

목 적 : 본 연구자들은 전자간증, 부당 경량아, 자궁 내 발육지연 등의 질환들이 공통적으로 혈관내피세포의 기능 변화와 어느 정도 관련되어 있을 것으로 추론하였다. 따라서 전자간증 산모의 신생아, 부당 경량아의 제대혈관내피세포를 배양하여 제대의 혈관내피세포에서 발현되는 대표적인 혈관 수축작용 물질인 endothelin-1의 양을 측정한 후 정상 신생아 제대혈관 내피세포의 결과와 비교하여 각 질환에서 태아의 혈관내피세포의 endothelin-1 발현 기능에 어떤 차이가 있는지를 확인하고, 또한 배양된 정상아 제대혈관내피세포에 전자간증 산모의 신생아와 부당 경량아 및 정상아의 제대혈 혈청을 투여하여 발현된 endothelin-1의 양을 비교하여 혈청 내에 endothelin-1의 발현을 촉진시키는 인자가 있는지를 알아보았다. 방 법 : 전자간증으로 진단 받은 산모의 신생아를 전자간증군(n=7), 부당 경량아로 진단받은 신생아를 부당 경량아군(n=8), 정상 신생아를 정상군(n=12)으로 나누었다. 각 그룹에서 태어난 신생아 제대와 제대혈을 모아 제대혈은 그 혈청을 영하 $70^{\circ}C$ 이하에 보관하였다. 전자간증군, 부당 경량아군 및 정상군 신생아의 제대 혈관내피세포를 분리하고 배양하였다. 배양된 각각의 제대 혈관내피세포의 상층액에서 endothelin-1 level을 측정하였다. 다음에는 전자간증군, SGA군 및 정상군의 제대혈 혈장과 정상 신생아 제대 혈관내피세포를 함께 부양하여 그 상층액에서 endothelin-1 level을 측정하였다. 결 과 : 전자간증군, 부당 경량아군 및 정상군의 제대혈관내피세포를 배양하여 발현된 endothelin-1의 양을 측정한 결과 전자간증군과 SGA군의 제대혈관내피세포의 endothelin-1 발현은 정상군과 유의한 차이가 없었다. 그러나 배양된 정상아 제대혈관내피세포에 전자간증군과 SGA군의 제대혈 혈청을 투여하여 발현된 endothelin-1의 양은 정상군에 비하여 유의하게 증가되었다. 결 론 : 전자간증 신생아나 부당 경량아의 혈관내피세포의 기능이상을 유발하는 인자가 전자간증과 부당경량아 제대 혈청내에 존재할 가능성이 있을 것으로 생각된다.

Keywords

References

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