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Late pregnancy associated plasma protein A levels decrease in preterm labor.

06:00 EDT 12th May 2011 | BioPortfolio

Summary of "Late pregnancy associated plasma protein A levels decrease in preterm labor."

Objective. The purpose of the present study is to evaluate late, 'at admission', Pregnancy-associated plasma protein-A (PAPP-A) levels as a predictor of preterm birth in women with complaints of preterm labor or preterm painful contractions. Methods. Prospective cohort study of singleton gestations, 23-37 weeks, and symptoms of preterm labor. Primary end point was delivery < 37 weeks. Predictive PAPP-A values were calculated both for preterm delivery and threatened preterm delivery on receiver operator curve. Results. In all, 41 women (38.3%) delivered before 37 weeks (Group 1); 32 women (30.7%) had symptoms of preterm labor but did not deliver preterm (Group 2); 31 women (29.7%) delivered term (Group 3, control). Mean PAPP-A levels in preterm-labor and its matched control were 33.4 ± 19.9 and 52.5 ± 25.4 mIU/ml, respectively, and difference was statistically significant (p = 0.003). Mean PAPP-A level in threatened preterm labor group was 47.6 ± 25.3 mIU/ml and difference was significant compared to preterm-labor, but not significant compared to control group (p = 0.028 and p = 0.74, respectively). Conclusion. Late PAPP-A levels decreased in preterm labor, levels < 29.8 mIU/ml was associated with increased risk for preterm birth, supporting active management whereas cutoff value of 33.6 mIU/ml is useful for discrimination of preterm birth from threatened preterm birth reaching to term.

Affiliation

Department of Obstetrics and Gynecology, Sisli Etfal Training and Research Hospital, Istanbul, Turkey.

Journal Details

This article was published in the following journal.

Name: The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the
ISSN: 1476-4954
Pages:

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A 6.6-kDa protein component of VERY-LOW-DENSITY LIPOPROTEINS; INTERMEDIATE-DENSITY LIPOPROTEINS; and HIGH-DENSITY LIPOPROTEINS. Apo C-I displaces APO E from lipoproteins, modulate their binding to receptors (RECEPTORS, LDL), and thereby decrease their clearance from plasma. Elevated Apo C-I levels are associated with HYPERLIPOPROTEINEMIA and ATHEROSCLEROSIS.

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Removal of plasma and replacement with various fluids, e.g., fresh frozen plasma, plasma protein fractions (PPF), albumin preparations, dextran solutions, saline. Used in treatment of autoimmune diseases, immune complex diseases, diseases of excess plasma factors, and other conditions.

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