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Expression profile of plasma exosomal microRNAs in women with polycystic ovary syndrome and control women

ABSTRACT: Expression profile of plasma exosomal microRNAs in women with polycystic ovary syndrome and control women

PROVIDER: PRJNA598459 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR10811700.fastq.gz	Fastqsanger.gz
	SRR10811701.fastq.gz	Fastqsanger.gz
	SRR10811702.fastq.gz	Fastqsanger.gz
	SRR10811703.fastq.gz	Fastqsanger.gz
	SRR10811704.fastq.gz	Fastqsanger.gz

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Expression profile of plasma exosomal microRNAs in women with polycystic ovary syndrome and control women

Project description:Polycystic ovary syndrome (PCOS) is a highly prevalent endocrine-metabolic disorder. Epigenetic etiology is suggested to play an important role in PCOS pathogenesis, since it is hard to elucidate completely by genetic variations. Exosomal microRNAs (miRNAs) have recently been identified as a novel mechanism of intercellular communication, and a more stable regulator of gene expression compared with free miRNAs. The aim of this study is to detect the different expression profile of plasma exosomal miRNAs between PCOS patients and healthy controls.

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Project description:In vitro studies of subcutaneous (SC) abdominal adipose stem cells (ASC) from women with polycystic ovary syndrome (PCOS) show altered ASC commitment to preadipocytes and differentiation to mature adipocytes related to hyperandrogenism. The goal of the study is to use microarrays to examine whether SC abdominal ASC gene expression are altered in normal-weight PCOS women and correlated with hyperandrogenemia and/or insulin resistance, which are prevalent clinical pathologies of PCOS.

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Project description:Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder that affects 5-10% of reproductive aged women. The hallmark characteristic of PCOS is increased ovarian androgen synthesis. Previous studies by our laboratory demonstrated that increased androgen synthesis is a stable biochemical phenotype of PCOS theca cells which are the primary source of ovarian androgen production. The increase in theca cell steroidogenesis was due to an increase in expression of several steroidogenic enzymes including CYP17 and CYP11A but not StAR. Interestingly, the anti-epileptic drug valproic acid induces increased theca cell androgen synthesis and increased CYP17 and CYP11A mRNA levels. In this study we have characterized the gene expression profiles of theca cells obtained from normal or polycystic ovaries which were maintained in the absence (UNT) or presence (VPA) of valproic acid. The data identifed new candidate genes and novel signaling pathways which may contribute to the manifestation of PCOS phenotypes including increased androgen production. The experiments in this study were carried using the Affymetrix U133A and U133B oligonucleotide chips.

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Transcription profiling of human omental adipose tissue in women with polycystic ovary syndrome (PCOS)

Project description:CONTEXT: The polycystic ovary syndrome (PCOS) is frequently associated with visceral obesity, suggesting that omental adipose tissue might play an important role in the pathogenesis of the syndrome. OBJECTIVE: The objective was to study the expression profiles of omental fat biopsy samples obtained from morbidly obese women with or without PCOS at the time of bariatric surgery. DESIGN: This was a case-control study. SETTINGS: We conducted the study in an academic hospital. PATIENTS: Eight PCOS patients and seven nonhyperandrogenic women submitted to bariatric surgery because of morbid obesity. INTERVENTIONS: Biopsy samples of omental fat were obtained during bariatric surgery. MAIN OUTCOME MEASURE: The main outcome measure was high-density oligonucleotide arrays. RESULTS: After statistical analysis, we identified changes in the expression patterns of 63 genes between PCOS and control samples. Gene classification was assessed through data mining of Gene Ontology annotations and cluster analysis of dysregulated genes between both groups. These methods highlighted abnormal expression of genes encoding certain components of several biological pathways related to insulin signaling and Wnt signaling, oxidative stress, inflammation, immune function, and lipid metabolism, as well as other genes previously related to PCOS or to the metabolic syndrome. CONCLUSION: The differences in the gene expression profiles in visceral adipose tissue of PCOS patients compared with nonhyperandrogenic women involve multiple genes related to several biological pathways, suggesting that the involvement of abdominal obesity in the pathogenesis of PCOS is more ample than previously thought and is not restricted to the induction of insulin resistance.

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