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Korean Journal of Obstetrics & Gynecology 2001;44(12):2250-2256.
Published online December 1, 2001.
Insulin-like Growth Factor-Binding Protein-1 in Cervical Secretion as a Predictor of Preterm Delivery.
Bong Kwy Shine, Sang Jun Kim, Won Il Park, Joo Oh Kim, Dae Woon Kim, Seo You Hong, Hye Sun Yoon
Department of Obstetrics and Gynecology, Department of Pediatrics, Eulji University College of Medicine, Seoul, Korea.
The phosphorylated isoforms of insulin-like growth factor-binding protein-1 (IGFBP-1) were produced by the decidua. The aim of this study was to evaluate whether the presence of phosphorylated IGFBP-1 (phIGFBP-1) in cervical secretions of pregnant women with preterm uterine contractions can predict an increased risk of preterm delivery and infectious complications. METHOD: The prospective study of 32 pregnant women who admitted under the diagnosis of preterm labor with intact membrane at gestational age of 24+0 to 36+0 weeks. Phsphorylated IGFBP-1 was qualitatively assayed using immunochromatography in cervical swab samples at the time of admission. The interval between the test and delivery, gestational age, duration of tocolysis, birth weight, CRP, ESR and the presence of neonatal infection were compared between positive and negative groups. RESULTS: There was no differnce in age, obstetric histories and gestational age and Bishop score at the time of admission between two groups. Eight pregnacies out of 13 positive group and two pregnacies out of 19 negative group resulted in preterm birth. The sensitivity and specificity of the phIGFBP-1 test to predict preterm birth were 80.0% and 77.3%, respectively. The mean getational age and interval between the test and delivery were 38.36 weeks and 45.0 days and 35.78 weeks and 35.46 days in negative and positive group respectively. The birth weight of the babies was significantly higher in negative group. The duration of tocolysis was longer in positive group with marginal statistical significance. The CRP, ESR and WBC count were not different. One postpartum sepsis, one neonatal death and one necrotizing enterocolitis were complicated in positive group. CONCLUSION: The presence of phIGFBP-1 is an usful marker to predict preterm birth in case of regular uterine contraction with intact fetal membranes.
Key Words: Phosphorylated IGFBP-1, Preterm delivery

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