Annexin A5 levels in midtrimester amniotic fluid: association with intrauterine growth restriction.

TitleAnnexin A5 levels in midtrimester amniotic fluid: association with intrauterine growth restriction.
Publication TypeJournal Article
Year of Publication2006
AuthorsVan Eerden P, Wu X-X, Chazotte C, Rand JH
JournalAm J Obstet Gynecol
Volume194
Issue5
Pagination1371-6
Date Published2006 May
ISSN1097-6868
KeywordsAdult, Amniocentesis, Amniotic Fluid, Annexin A5, Cohort Studies, Enzyme-Linked Immunosorbent Assay, Female, Fetal Growth Retardation, Gestational Age, Humans, Linear Models, Pregnancy, Pregnancy Trimester, Second, Risk
Abstract

OBJECTIVE: The purpose of this study was to determine whether amniotic fluid levels of annexin A5 (AF-AnxA5) may be associated with intrauterine growth restriction (IUGR).

STUDY DESIGN: Amniotic fluid was obtained in a cohort of pregnant patients (n = 172) undergoing amniocentesis at 15 to 24 weeks' gestation and annexin A5 (AnxA5) levels were determined with enzyme-linked immunosorbent assay (ELISA). Patients who developed IUGR were compared with the remainder of the cohort.

RESULTS: AF-AnxA5 levels significantly increased through gestation (P = .003). The mean level of AF-AnxA5 in IUGR patients (n = 15) was significantly higher (P = .028) than in the remainder of the cohort (n = 130). Elevated AF-AnxA5 > 20 ng/mL was associated with a relative risk of 3.5 for the development of IUGR (P = .023).

CONCLUSION: AnxA5 is present in amniotic fluid and increases through gestation from 15 to 24 weeks. Elevated AF-AnxA5 levels were present in patients who developed IUGR. AF-AnxA5 may be a useful marker for identifying pregnancy abnormalities.

DOI10.1016/j.ajog.2005.11.005
Alternate JournalAm J Obstet Gynecol
PubMed ID16579937
Grant ListHL-61331 / HL / NHLBI NIH HHS / United States
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Jacob H. Rand, M.D.

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