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Characterization of placenta-specific microRNAs in fetal growth restriction pregnancy.
MedLine Citation:
PMID:  23354729     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: The aim of this study was to characterize placenta-specific microRNAs in fetal growth restriction (FGR) pregnancy. METHOD: Placenta-specific miRNAs were identified by next-generation sequencing analysis. Subsequently, quantitative real-time reverse-transcription polymerase chain reaction was used to identify FGR placenta-specific miRNAs whose level of expression was significantly decreased in FGR placenta (n = 45) compared with uncomplicated placenta (n = 50). FGR pregnancy-associated, placenta-specific microRNAs were identified in maternal plasma after delivery at significantly decreased concentrations, and their circulating levels in maternal plasma was compared between FGR pregnancies (n = 10) and uncomplicated pregnancies (n = 10). RESULTS: Out of the ten placenta-specific microRNAs that we identified, seven placenta-specific microRNAs (hsa-miR-518b, hsa-miR-1323, hsa-miR-516b, hsa-miR-515-5p, hsa-miR-520h, hsa-miR-519d, and hsa-miR-526b) from the chromosome 19 microRNA cluster were identified as FGR placenta-specific microRNAs. Four FGR placenta-specific microRNAs (hsa-miR-518b, hsa-miR-1323, hsa-miR-520h, and hsa-miR-519d) were confirmed as FGR pregnancy-associated, placenta-specific miRNAs, but their circulating levels in maternal plasma showed no significant differences between FGR pregnancy and uncomplicated pregnancy. CONCLUSION: Our data suggest that reduced expression in placenta of certain FGR placenta-specific miRNAs is associated with FGR and that the discrepancy between expression in FGR placenta and their circulating levels in maternal plasma will be crucial to understanding how placenta-specific microRNAs are released into the maternal circulation. © 2013 John Wiley & Sons, Ltd.
Authors:
Ai Higashijima; Kiyonori Miura; Hiroyuki Mishima; Akira Kinoshita; Ozora Jo; Shuhei Abe; Yuri Hasegawa; Shoko Miura; Kentaro Yamasaki; Atsushi Yoshida; Koh-Ichiro Yoshiura; Hideaki Masuzaki
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-27
Journal Detail:
Title:  Prenatal diagnosis     Volume:  -     ISSN:  1097-0223     ISO Abbreviation:  Prenat. Diagn.     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8106540     Medline TA:  Prenat Diagn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1-9     Citation Subset:  -    
Copyright Information:
© 2013 John Wiley & Sons, Ltd.
Affiliation:
Obstetrics and Gynecology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan.
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