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Amniotic microRNA profile of normal delivery at term

ABSTRACT: Amnion is a vital structure for human parturition, and it is anatomically compartmentalized into the placental amnion and the reflected amnion. microRNA expression was profiled to determine the expression pattern and its significance in the placental amnion and the reflected amnion in association with spontaneous labor at term.

ORGANISM(S): Mus musculus Human gammaherpesvirus 8 Rattus norvegicus JC polyomavirus Betapolyomavirus macacae Human immunodeficiency virus 1 Murid gammaherpesvirus 4 Homo sapiens Human betaherpesvirus 5 Betapolyomavirus hominis Human alphaherpesvirus 1 human gammaherpesvirus 4 Murid betaherpesvirus 1

PROVIDER: GSE27441 | GEO | 2011/09/01

SECONDARY ACCESSION(S): PRJNA137063

REPOSITORIES: GEO

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Amniotic microRNA profile of normal delivery at term

Project description:Amnion is a vital structure for human parturition, and it is anatomically compartmentalized into the placental amnion and the reflected amnion. microRNA expression was profiled to determine the expression pattern and its significance in the placental amnion and the reflected amnion in association with spontaneous labor at term. placental and reflected amnion tissue from two groups of women (term in labor and term no labor)

2011-08-31 | E-GEOD-27441 | biostudies-arrayexpress

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C/EBPδ drives key endocrine signals in human fetal membranes at parturition [RNA-seq]

Project description:Amnion-derived prostaglandin E2 (PGE2) and cortisol are key to labor onset. Identification of the common transcription factor driving the expression of both cyclooxygenase-2 (COX-2) and 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1), the key enzymes in their production, may hold the key to the treatment of pre- and post-term labor. Here, we have found that the CCAAT enhancer binding protein δ (C/EBPδ) is such a transcription factor which underlies the feed-forward induction of COX-2 and 11β-HSD1 expression by their own products PGE2 and cortisol in human amnion fibroblasts so that their production would be ensured in the amnion for the onset of labor. Moreover, the abundance of C/EBPδ in amnion increases along with COX-2 and 11β-HSD1 at term and further increases at parturition. Knockout of C/EBPδ in mice delays the onset of labor further supporting the concept. In conclusion, C/EBPδ may serve as a novel pharmaceutical target in the amnion for treatment of pre- and post-term labor.

2021-07-15 | GSE166453 | GEO

C/EBPδ drives key endocrine signals in human fetal membranes at parturition

Project description:Amnion-derived prostaglandin E2 (PGE2) and cortisol are key to labor onset. Identification of the common transcription factor driving the expression of both cyclooxygenase-2 (COX-2) and 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1), the key enzymes in their production, may hold the key to the treatment of pre- and post-term labor. Here, we have found that the CCAAT enhancer binding protein δ (C/EBPδ) is such a transcription factor which underlies the feed-forward induction of COX-2 and 11β-HSD1 expression by their own products PGE2 and cortisol in human amnion fibroblasts so that their production would be ensured in the amnion for the onset of labor. Moreover, the abundance of C/EBPδ in amnion increases along with COX-2 and 11β-HSD1 at term and further increases at parturition. Knockout of C/EBPδ in mice delays the onset of labor further supporting the concept. In conclusion, C/EBPδ may serve as a novel pharmaceutical target in the amnion for treatment of pre- and post-term labor.

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Project description:We investigated a potential role for SP-A in human pregnancy and parturition by examining SP-A expression patterns in amniotic fluid and the amnion

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Project description:Distinct processes govern the transition from myometrial quiescence to activation during both term and preterm labor. We sought the specific gene sets responsible for initiating term and preterm labor, along with a core set of effector genes necessary for labor independent of gestational age and the underlying trigger. The Effector Gene Set consisted of 49 genes present in both preterm and term labor but absent from non-labor samples. 122 genes were specific to preterm labor (Preterm Initiator Set) and 229 to term labor (Term Initiator Set). The Term Initiator and the Effector Sets reflected predominantly inflammatory processes. Surprisingly, the Preterm Initiator Gene Set reflected molecular and biological events almost exclusive of inflammation. Preterm and term labor differ dramatically in their unique, initiator gene profiles, suggesting alternative pathways underlie these events. Inflammatory processes are ubiquitous to the Term Initiator and the Effector Gene Sets, supporting the idea term parturition is an inflammatory process. The absence of inflammatory processes in the Preterm Initiator Set suggests inflammation is secondary to processes triggering spontaneous preterm birth, and could explain the lack of therapeutic efficacy associated with anti inflammatory/antibiotic regimens. Keywords: myometrial gene expression, preterm versus term labor

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Transcription profiling of human myometrium from samples obtained at term (n=6) or preterm (n=6) with and without labor

Project description:Distinct processes govern the transition from myometrial quiescence to activation during both term and preterm labor. We sought the specific gene sets responsible for initiating term and preterm labor, along with a core set of effector genes necessary for labor independent of gestational age and the underlying trigger. The Effector Gene Set consisted of 49 genes present in both preterm and term labor but absent from non-labor samples. 122 genes were specific to preterm labor (Preterm Initiator Set) and 229 to term labor (Term Initiator Set). The Term Initiator and the Effector Sets reflected predominantly inflammatory processes. Surprisingly, the Preterm Initiator Gene Set reflected molecular and biological events almost exclusive of inflammation. Preterm and term labor differ dramatically in their unique, initiator gene profiles, suggesting alternative pathways underlie these events. Inflammatory processes are ubiquitous to the Term Initiator and the Effector Gene Sets, supporting the idea term parturition is an inflammatory process. The absence of inflammatory processes in the Preterm Initiator Set suggests inflammation is secondary to processes triggering spontaneous preterm birth, and could explain the lack of therapeutic efficacy associated with anti inflammatory/antibiotic regimens. Experiment Overall Design: Myometrial gene expression was analyzed from samples obtained at term (n=6) or preterm (n=6) with and without labor using cDNA microarrays. Patients in preterm labor all had intra amniotic inflammation. Gene sets were generated using logical operations within a functional mapping tool (MetaCoreâ¢, GeneGo, St. Joseph, MI). Relevant gene sets were validated with quantitative real-time polymerase chain reaction.

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2022-02-03 | E-MTAB-10520 | biostudies-arrayexpress

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