Gene expression profiling of human placentas from preeclamptic and normotensive pregnancies.

Abstract:

:The aim of this study was to investigate patterns of gene expression in placental samples from patients with preeclampsia (PE), persistent bilateral uterine artery notching (without PE), and normal controls. This study included placental tissue from nine women with PE, seven with uncomplicated pregnancies and five with bilateral uterine artery notching in Doppler velocimetry tracings. Human cDNA microarrays with 6500 transcripts/genes were used and the results verified with real-time PCR and in-situ hybridization. Multidimensional scaling method and random permutation technique demonstrated significant differences among the three groups examined. Within the 6.5K arrays, 6198 elements were unique cDNA clones representing 5952 unique UniGenes and 5695 unique LocusLinks. Multidimensional scaling plots showed 5000 genes that met our quality criteria; among these, 366 genes were significantly different in at least one comparison. Differences in three genes of interest were confirmed with real-time PCR and in-situ hybridization; acid phosphatase 5 was shown to be overexpressed in PE samples and calmodulin 2 and v-rel reticuloendotheliosis viral oncogene homolog A (RELA) were downregulated in PE and uterine artery notch placentas. In conclusion downregulation of RELA and calmodulin 2 might represent an attempt by the placenta to compensate for elevations in intracellular calcium, possibly caused by hypoxia and/or apoptosis, in both pregnancies with uterine artery notching and preeclampsia.

journal_name

Mol Hum Reprod

authors

Hansson SR,Chen Y,Brodszki J,Chen M,Hernandez-Andrade E,Inman JM,Kozhich OA,Larsson I,Marsál K,Medstrand P,Xiang CC,Brownstein MJ

doi

10.1093/molehr/gal011

subject

Has Abstract

pub_date

2006-03-01 00:00:00

pages

169-79

issue

3

eissn

1360-9947

issn

1460-2407

pii

gal011

journal_volume

12

pub_type

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