Serum activin A, inhibin A, and follistatin concentrations in preeclampsia or small for gestational age pregnancies |
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Authors: | Keelan Jeffrey A Taylor Rennae Schellenberg Jean-Claude Groome Nigel P Mitchell Murray D North Robyn A |
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Institution: | Liggins Institute and Division of Pharmacology and Clinical Pharmacology, University of Auckland, Faculty of Medical and Health Sciences, New Zealand. j.keelan@auckland.ac.nz |
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Abstract: | OBJECTIVE: To determine whether maternal serum activin A, inhibin A, and follistatin concentrations in idiopathic small for gestational age (SGA) pregnancies are similar to those in normal pregnancies or elevated as in preeclampsia. METHODS: Maternal serum activin A, inhibin A, and follistatin concentrations were determined in 1) nulliparous women with idiopathic SGA (birth weight <10th percentile; n = 18), preeclampsia (systolic blood pressure > or =140 mmHg or diastolic blood pressure > or =90 mmHg plus proteinuria > or =2+ or >0.3 g/24h; n = 22), and normotensive controls, matched for gestational age at sampling (n = 22), and 2) a longitudinal series of samples collected at five intervals throughout pregnancy from nulliparous women with idiopathic SGA (n = 19), preeclampsia (n = 22), preeclampsia plus SGA (n = 15), or who had uncomplicated pregnancies (n = 20). RESULTS: Serum concentrations of activin A and inhibin A were similar in idiopathic SGA pregnancies to controls. In preeclampsia, activin A and inhibin A levels were markedly increased compared with controls or women with idiopathic SGA (P <.001), particularly in those with early-onset disease. Follistatin concentrations were only modestly (
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