GEO DataSets

(Submitter supplied) The purpose of this study was to perform a comprehensive analysis of gene expression profile in placentas from preeclamptic pregnancies vs normal placentas.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10558

12 Samples

Download data: TXT

(Submitter supplied) The series is composed of thirty hybridizations for analysis of differentially expressed genes in normal placenta tissues from patients with normal labor and placenta tissues from patients with severe preeclampsia. Patients tissues samples were obtained from (Vasilis. Total RNA extraction was performed by using the MagNa Pure Compact RNA Isolation Kit (Roche Applied Science). Keywords: Gene expression study, Disease state

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL2986

43 Samples

Download data: TXT

(Submitter supplied) The placenta plays an important role as a regulator of fetal nutrition and growth throughout development and placental factors contribute to gestational abnormalities such as preeclampsia. This study describes the genome-wide gene expression profiles of a large (n=94) set of human placentas in order to uncover gene expression patterns (or molecular signatures) associated with preeclampsia and IUGR. Besides modulated modularity clustering and pathway analysis, a set of candidate miRNAs were predicted by Gene Set Enrichment Analysis (GSEA) based on differentially expressed genes. A case-control study was conducted to examine the expression patterns of these candidate miRNAs in human placentas

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL6102

94 Samples

Download data: TXT

(Submitter supplied) Fetal growth restriction (FGR) is a heterogeneous disorder of pregnancy associated with pathologically low fetal and neonatal weights. We hypothesized that FGR consists of multiple placental subtypes, similar to what we have observed in preeclampsia. To address this hypothesis, we assembled a fetal growth-focused human placental microarray data set (N=97) consisting of 20 new normotensive suspected FGR samples (below), in addition to term controls (N=26) and hypertensive suspected FGR samples (N=51) from GSE75010.

Organism:

Homo sapiens

Type:

Expression profiling by array; Third-party reanalysis

Platform:

GPL6244

20 Samples

Download data: CEL, TXT

(Submitter supplied) Preeclampsia (PE) is a complex, heterogeneous disorder of pregnancy, demonstrating considerable variability in observed maternal symptoms and fetal outcomes. We hypothesized that this heterogeneity is due to the existence of multiple molecular forms of PE. To address our hypothesis, we created a large (N=330) human placental microarray data set consisting of seven previously published studies (GSE30186, GSE10588, GSE24129, GSE25906, GSE43942, GSE4707, and GSE44711) and 157 highly annotated samples from a BioBank (below). more...

Organism:

Homo sapiens

Type:

Expression profiling by array; Third-party reanalysis

Platform:

GPL6244

157 Samples

Download data: CEL, CSV

(Submitter supplied) 4 chorionic villus sampling specimens in pregnancies destined for preeclampsia and 8 matched controls were analyzed 36 genes were differentially expressed using J5 score and prediction modeling in caGEDA computer program Keywords: snap frozen, banked CVS specimens with known pregnancy outcomes revealed genes differentially expressed in preeclampsia pregnancies

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS3467

Platform:

GPL570

12 Samples

Download data: CEL

Analysis of first trimester placenta tissues obtained by chorionic villus sampling from women destined to develop preeclampsia. Preeclampsia is a cause of maternal, fetal, and neonatal morbidity and mortality. Results provide insight into the molecular pathogenesis of preeclampsia.

Organism:

Homo sapiens

Type:

Expression profiling by array, count, 2 disease state sets

Platform:

GPL570

Series:

GSE12767

12 Samples

Download data: CEL

(Submitter supplied) Genome wide DNA methylation profiling of normal and preeclampsia placental samples. Illumina Infinium HumanMethylation450 BeadChip (450K array) was used to obtain DNA methylation profiles in placental samples. Samples included 16 samples from healthy uncomplicated pregnancies and 8 samples from pregnancies affected by preeclampsia.

Organism:

Homo sapiens

Type:

Methylation profiling by array

Platform:

GPL13534

24 Samples

Download data: IDAT

(Submitter supplied) This SuperSeries is composed of the SubSeries listed below.

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL13534 GPL16686

72 Samples

Download data: CEL

(Submitter supplied) Placental Tissue Samples from 36 women (17 normotensive women, denoted with a P, and 19 preeclamptic women, denoted with a Q) were analyzed for differenital methylation Preeclamptic womene were compared direclty to normotensive women controlling for gestational age, race, maternal age, and baby sex

Organism:

Homo sapiens

Type:

Methylation profiling by genome tiling array

Platform:

GPL13534

36 Samples

Download data: TXT

(Submitter supplied) Placental Tissue Samples from 36 women (17 normotensive women, denoted with a P, and 19 preeclamptic women, denoted with a Q) were analyzed for differenital methylation Preeclamptic womene were compared direclty to normotensive women controlling for gestational age, race, maternal age, and baby sex

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

36 Samples

Download data: CEL

(Submitter supplied) Pre-eclampsia is one of the most serious pregnancy-associated disorders, and is defined by hypertension (systolic blood pressure higher than 140mmHg or diastolic blood pressure higher than 90mmHg) with proteinuria (more than 0.3g/day). It is not a simple complication of pregnancy, but is rather a syndrome of multiple organ failure involving the liver, kidney, and lung, as well as coagulatory and neural systems. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Dataset:

GDS2080

Platform:

GPL1708

14 Samples

Download data

Analysis of placentas from patients with early or late onset severe preeclampsia. Preeclampsia is a serious pregnancy-associated disorder characterized by hypertension and proteinuria. Results provide insight into the pathogenesis of preeclampsia.

Organism:

Homo sapiens

Type:

Expression profiling by array, log10 ratio, 3 disease state sets

Platform:

GPL1708

Series:

GSE4707

14 Samples

Download data

(Submitter supplied) Background: Long non-coding RNAs (lncRNAs) are an important class of pervasive genes involved in a variety of biological functions. They are aberrantly expressed in many types of diseases. We want to study the lncRNAs profiles in preeclampsia. Preeclampsia has been observed in patients with molar pregnancy where a fetus is absent demonstrating that the placenta is sufficient to cause the condition. So we analyze the lncRNAs profiles in preeclampsia placentas. In this study, we described the lncRNAs profiles in 6 preeclampsia placentas (T) and 5 matched normal pregnancy placentas (N) tissues by microarray. Methodology/Principal Findings: With abundant and varied probes accounting 33,045 LncRNAs in our microarray, the number of lncRNAs that expressed at a certain level could be detected is 28,443. From the data we found there were 738 lncRNAs that differentially expressed (≥1.5 fold-change) among preeclampsia placentas compared with matched controls. Up to 18,063 coding transcripts could be detected in placenta samples through 30,215 coding transcripts probes. Coding-non-coding gene co-expression networks (CNC network) were constructed based on the correlation analysis between the differential expressed lncRNAs and mRNAs. According to the GO-Pathway analysis of differential expressed lncRNAs/mRNAs, we choose three lncRNAs to analyze the relationship between lncRNAs and preeclampsia. LOC391533, LOC284100, CEACAMP8 were evaluated by qPCR in 40 of preeclampsia placentas and 40 of controls. The results showed three lncRNAs were aberrantly expressed in preeclampsia placentas compared with controls. Conclusions/Significance: Our study is the first one to determine genome-wide lncRNAs expression patterns in preeclampsia placenta by microarray. The results displayed that clusters of lncRNAs were aberrantly expressed in preeclampsia placenta compared with controls, which revealed that lncRNAs differentially expressed in preeclampsia placenta may exert a partial or key role in preeclampsia development. Misregulation of LOC391533, LOC284100, CEACAMP8 might be associated with preeclampsia. Taken together, this study may provide potential targets for future treatment of preeclampsia and novel insights into preeclampsia biology.

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL15314

11 Samples

Download data: TXT

(Submitter supplied) Introduction: To determine the miRNA expression profile in placentas complicated by Preeclampsia (PE) and compare it to uncomplicated pregnancies. Methods: Sixteen placentas from women with PE, including 11 with early onset PE (EOPE) and 5 with late onset PE (LOPE), as well as 8 from uncomplicated pregnancies were analyzed using miRNA microarrays. For statistical analyses the MATLAB® simulation environment was applied. more...

Organism:

Homo sapiens

Type:

Non-coding RNA profiling by array

Platform:

GPL23980

24 Samples

Download data: TXT

(Submitter supplied) The maternal signs of preeclampsia, principally the new onset of high blood pressure, are thought to occur secondary to faulty placentation. Previous studies profiled the gene expression patterns of chorionic villi, the maternal-fetal interface or isolated cytotrophoblasts in this pregnancy complication. We theorized that transcriptomic analyses of trophoblast subpopulations in situ would give us new insights into the role of these cells in preeclampsia pathogenesis.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16686

23 Samples

Download data: CEL, TXT

(Submitter supplied) Preeclampsia-offspring have increased risks of developing cardiovascular disorders in adulthood, implicating that preeclampsia programs fetal vasculature in utero. Fetal sex is associated with the risk of preeclampsia but the underlying mechanisms are unclear. We hypothesize that preeclampsia alters fetal endothelial gene expression and disturbs cytokines and growth factors-induced endothelial function in a fetal sex-specific manner. more...

Organism:

Homo sapiens

Type:

Expression profiling by high throughput sequencing

Platform:

GPL11154

27 Samples

Download data: TXT

(Submitter supplied) Preeclampsia (PE) is a complex, heterogeneous disorder of pregnancy, demonstrating considerable variability in observed maternal symptoms and fetal outcomes. We recently identified five clusters of placentas within a large gene expression microarray dataset (N=330, GSE75010), of which four contained a substantial number of PE samples. However, while transcriptional analysis of placentas can subtype patients, we hypothesized that the addition of epigenetic information should reveal gene regulatory mechanisms behind the distinct PE pathologies. more...

Organism:

Homo sapiens

Type:

Expression profiling by array; Methylation profiling by genome tiling array

Platforms:

GPL6244 GPL13534

96 Samples

Download data: CEL, CSV, IDAT, TXT

(Submitter supplied) Background: Early-onset preeclampsia (EOPE) and late-onset preeclampsia (LOPE) has been regarded as two different phenotypes with heterogeneous manifestation. The underlying mechanisms remain elusive. Aim to gain insight into the pathogenesis of the two traits, we analyzed the placental gene expression profiles in preeclampsia placentas. Methods: Whole genome-wide microarray was used to describe the gene expression profiles in the placenta tissues from patients with early-(n=7; <34 weeks), late-onset(n=8; >36 weeks) PE and their controls who delivered preterm (n=5;<34 weeks) or at term(n=5; >36 weeks) Genes were selected as differentially expressed upon a fold-change≥2 and q-value<0.05. more...

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL16699

25 Samples

Download data: TXT

(Submitter supplied) Investigation of whole genome gene expression level changes between placentas from pregnancies with PE and placentas from normal pregnancies to search for the candiadate genes for further DNA methylation analysis The differentially expressed genes LEP and SH3PXD2A were further analyzed by DNA methylation.

Organism:

Homo sapiens

Type:

Expression profiling by array

Platform:

GPL10191

12 Samples

Download data: PAIR, XLS