Project description:Polycystic ovary syndrome (PCOS) is a heterogeneous endocrine disorder characterized by hyperandrogenism, ovulatory dysfunction, and polycystic ovaries. In this study, we induced a PCOS rat model by oral administration of letrozole combined with a high-fat diet and then treated with mogroside V (MV) to evaluate the protective roles on endocrine and follicle development in PCOS rats and the underlying mechanisms. Purpose: To detect the difference of ovary transcriptome profiling between PCOS model and Control rat and to evaluate the effect of mogroside V on the transcriptome profiling of ovaries of PCOS model rats. Methods: Ovarian mRNA profiles of 15-week-old Control, PCOS and PCOS-MV group rats (4 rats per group) were generated by deep sequencing,using Illumina PE150.
Project description:Polycystic ovary syndrome (PCOS) is a heterogeneous condition, of polyhedric pathogenesis and clinical presentation, defined by oligo-/anovulation, hyperandrogenism and/or polycystic ovaries. Metabolic complications are highly common also in patients suffering PCOS, including obesity, insulin resistance and type-2 diabetes, which severely compromise the clinical course of affected women. Yet, therapeutic options for PCOS remain mostly symptomatic and of limited efficacy for improving both metabolic and reproductive alterations. We report herein the hormonal, metabolic and gonadal responses to different GLP1-based multi-agonists, namely GLP1/Estrogen (GLP1/E), GLP1/GIP and GLP1/GIP/Glucagon, in two murine models of PCOS, with variable penetrance of metabolic and reproductive traits, and their comparison with metformin. Our data illustrate the superior efficacy of the di-agonist, GLP1/E, vs. other multi-agonists and metformin in the management of the metabolic complications of PCOS; GLP1/E was able to ameliorate also ovarian cyclicity in an ovulatory model of PCOS, without direct estrogenic uterotrophic effects. In keeping with GLP1-mediated brain targeting, label-free, quantitative proteomics revealed changes in common and distinct hypothalamic pathways in response to GLP1/E between the two PCOS models, as basis for differential efficiency. Altogether, our data set the basis for the use of GLP1-based multi-agonists, and particularly GLP1/E, in the personalized management of PCOS.
Project description:Polycystic ovarian syndrome (PCOS) is an endocrine disorder of the reproductive and metabolic axis in women during the reproductive age. In this study, we used a rat model exhibiting reproductive and metabolic abnormalities similar to human PCOS to unravel the molecular mechanisms underlining this complex syndrome.
2016-01-01 | GSE59456 | GEO
Project description:mRNA-sequencing in rat ovaries of PCOS and different treatment groups
Project description:Objective: The etiology of PCOS is mostly unknown. Existing data support both genetic and environmental factors in its pathogenesis. Design: Prospective case - control study. Setting: University Hospital. Patients: 25 patients undergoing IVF-ICSI treatment. Intervention: Genome-wide oligonucleotide microarray technology was used to study differential gene-expression patterns of cultured human cumulus cells from IVF patients divided into 4 groups according to disease state (PCOS vs. Control) and BMI (Obese vs. Lean). Results: Two differential PCOS gene expression profiles were established: Lean-Type was formed by comparing PCOS lean (PL) vs. non-PCOS lean (NL) individuals; Obese-Type was formed by comparing PCOS obese (PO) vs. non-PCOS (NO) obese patients. Conclusions: Different molecular pathways are associated with PCOS in Lean and Obese individuals, as demonstrated by gene expression profiling of cumulus cells. Our findings provide insights into the molecular pathogenesis of PCOS. We used microarrays to study the gene expression of human cultured cumulus cells. We compared the genes expression of lean PCOS, Obese PCOS, lean controls and obese controls. Different molecular pathways are associated with PCOS in Lean and Obese patients. Experiment Overall Design: Cumulus cells obtained from woman undergoing IVF/ICSI. Following oocyte retrieval, cumulus cells were stripped from the oocyte, in preparation for the ICSI process, with a micropipette. After 48h in culture the cumulus cells were collected for RNA extraction and hybridization on Affymetrix microarrays. We compered the expression profile of 4 groups - lean PCOS, obese PCOS, lean controls and obese controls.
Project description:Polycystic ovarian syndrome (PCOS) is an endocrine disorder of the reproductive and metabolic axis in women during the reproductive age. In this study, we used a rat model exhibiting reproductive and metabolic abnormalities similar to human PCOS to unravel the molecular mechanisms underlining this complex syndrome. Female Sprague-Dawley rats were implanted with a silicone capsule continuous-releasing 5α-dehydrotestestrone (DHT) per day for 12 weeks to mimic the hyperandrogenic state in women with PCOS, and the control (CTL) groups received an empty capsule. The animals were euthanized at 15 weeks of age and the ovarian cortex tissues of both groups were used for transcriptome profile analysis.
Project description:Polycystic ovary syndrome (PCOS) is the most common and heterogeneous endocrine disorder in women of reproductive age.Depending on different criteria and populations,the prevalence of PCOS ranges from 6 to 8% with the NIH criteria, and up to 20% with the Rotterdam criteria.Further, it accounts for approximately 75% of anovulatory infertility.Circular RNAs (circRNAs) mediate the posttranscriptional regulation of multiple genes by functioning as microRNA (miRNA) sponges. This study aimed to detect the novel expression of circRNAs in the cumulus cells (CCs) of PCOS patients and their potential significance in the pathogenesis of PCOS.