Abstract：
:MicroRNAs (miRNAs) are short non-coding RNAs that regulate gene expression at the post-transcriptional level. While mostly intracellular, a portion of cellular miRNAs is released to the circulation and their level in the plasma is altered in certain pathological conditions such as cancer, and also during pregnancy. We examined the circulating levels of a set of trophoblastic miRNAs, which we recently found to be regulated by hypoxia, in the plasma of pregnant women with fetal growth restriction (FGR). Pregnancy was associated with increased plasma levels of several placenta-specific miRNAs, compared to non-pregnant controls. Among pregnant women, the overall levels of miRNA species that we analyzed were increased by 1.84-fold (p < or = 0.01) in plasma of women with pregnancies complicated by FGR, but decreased in FGR placentas by 24% (p < or = 0.01) compared to values from uncomplicated pregnancies. Together, our results show that plasma concentration of miRNAs is regulated in pregnancy, and that FGR is associated with increased circulating miRNA levels, highlighting the need to explore plasma miRNAs as potential biomarkers for placental diseases.
journal_name
Placentajournal_title
Placentaauthors
Mouillet JF,Chu T,Hubel CA,Nelson DM,Parks WT,Sadovsky Ydoi
10.1016/j.placenta.2010.07.001subject
Has Abstractpub_date
2010-09-01 00:00:00pages
781-4issue
9eissn
0143-4004issn
1532-3102pii
S0143-4004(10)00261-4journal_volume
31pub_type
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