전자간증 및 자궁내성장제한에서 사람 백혈구 항원-G 발현의 분석
Analysis of HLA-G expression in preeclampsia and intrauterine growth restriction
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=목적: 전자간증 및 자궁내성장제한 임신부와 전자간증과 자궁내성장제한이 동반된 임신부를 대상으로 태반의 발현과 혈액내의 수용성 형태 (soluble form)의 HLA-G 발현을 조사하고 그 결과를 정상 임신부와 비교 분석하였다.연구방법: HLA-G 발현은 전자간증이 합병된 임신 11예, 자궁내성장제한이 합병된 임신 18예, 전자간증과 자궁내성장제한이 동반된 임신 8예 및 다른 합병증이 없는 정상 임신 10예를 대상으로 하여 sandwich enzyme-linked immHLA-G unosorbent assay (ELISA)를 시행하고 정량적으로 분석하였다. 결과: 전자간증, 자궁내성장제한 및 전자간증과 자궁내성장제한이 동반된 임신부의 혈장 내 HLA-G 단백질 농도의 중앙값은 각각 0.072 μg/ml, 0.081 μg/ml, 0.086 μg/ml로 측정되어 정상 임신부 (중앙값, 0.360 μg/mL)와 비교하였을 때 통계적으로 유의하게 감소된 것으로 나타났다 (P=0.002, P=0.003, P=0.049). 전자간증, 자궁내성장제한 및 전자간증과 자궁내성장제한이 동반된 임신부의 태반 HLA-G 단백질 수치의 중앙값도 각각 0.016 μg/mg, 0.021 μg/mg, 0.015 μg/mg로 측정되어 정상 임신부 (중앙값, 0.091 μg/mL)와 비교하였을 때 역시 통계적으로 유의하게 감소된 것으로 나타났다 (P<0.001, P=0.001, P=0.002). 한편, 대상 임신부 모두의 혈장 내 HLA-G 단백질 농도와 태반 HLA-G 단백질 수치는 통계적으로 유의한 상관관계를 보였다 (r=0.807, P<0.001).
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