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methylation PCOS

Milana Kokosar, Anna Benrick, Alexander Perfilyev, Emma Nilsson, Thomas Källman, Claes Ohlsson, Charlotte Ling, Elisabet Stener-Victorin
A single bout of electroacupuncture results in muscle contractions and increased whole body glucose uptake in women with polycystic ovary syndrome (PCOS). Women with PCOS have transcriptional and epigenetic alterations in the adipose tissue and we hypothesized that electroacupuncture induces epigenetic and transcriptional changes to restore metabolic alterations. Twenty-one women with PCOS received a single bout of electroacupuncture, which increased the whole body glucose uptake. In subcutaneous adipose tissue biopsies, we identified treatment-induced expression changes of 2369 genes (Q < 0...
January 30, 2018: Scientific Reports
Jie-Xue Pan, Ya-Jing Tan, Fang-Fang Wang, Ning-Ning Hou, Yu-Qian Xiang, Jun-Yu Zhang, Ye Liu, Fan Qu, Qing Meng, Jian Xu, Jian-Zhong Sheng, He-Feng Huang
Background: Polycystic ovary syndrome (PCOS), whose etiology remains uncertain, is a highly heterogenous and genetically complex endocrine disorder. The aim of this study was to identify differentially expressed genes (DEGs) in granulosa cells (GCs) from PCOS patients and make epigenetic insights into the pathogenesis of PCOS. Results: Included in this study were 110 women with PCOS and 119 women with normal ovulatory cycles undergoing in vitro fertilization acting as the control group...
2018: Clinical Epigenetics
Roshni Patel, Gaurang Shah
Polycystic ovary syndrome (PCOS) is associated with hyperandrogenism, oligo-anovulation, polycystic ovaries and metabolic syndrome. Many researchers reported that PCOS often starts with menarche in adolescents. Presently available animal model focuses on ovarian but not metabolic features of PCOS. Therefore, we hypothesized that high-fat diet feeding to pre-pubertal female rats results in both reproductive and metabolic features of PCOS. Pre-pubertal female rats were divided into two groups: group I received normal pellet diet and group II received high-fat diet (HFD)...
February 2018: Reproduction: the Official Journal of the Society for the Study of Fertility
Francisca Concha C, Teresa Sir P, Sergio E Recabarren, Francisco Pérez B
Polycystic ovarian syndrome (PCOS) is an endocrine and metabolic dysfunction, highly prevalent in women in their reproductive years. Hyperandrogenism, oligo-ovulation, polycystic ovarian morphology are the main features of this syndrome. PCOS is a genetic disorder with a multifactorial etiology and has a strong link with environmental components. It is frequently associated with obesity and insulin resistance. Recently, epigenetic mechanisms have been involved in the pathogenesis of PCOS. Several studies showed that methylation in DNA and miRNAs is altered in women with PCOS in blood, serum, adipose tissue, granulose cells and theca...
July 2017: Revista Médica de Chile
Z Ning, L Jiayi, R Jian, X Wanli
OBJECTIVE: The purpose of this work was to examine the relationship between abnormal TOX3 gene methylation and the occurrence of polycystic ovarian syndrome (PCOS). PATIENTS AND METHODS: We selected 30 patients with PCOS and 30 control volunteers. Serum luteinizing hormone, estradiol, testosterone, and thyroid stimulating hormone were detected, methylation, mRNA and protein level of TOX3 were measured. RESULTS: Serum luteinizing hormone, estradiol, testosterone, and thyroid stimulating hormone were significantly higher and follicle stimulating hormone and prolactin were significantly lower in PCOS patients than in the control group...
May 2017: European Review for Medical and Pharmacological Sciences
Amrin Saiyed, Nasreen Jahan, Shaikh Ajij Ahmed Makbul, Mushir Ansari, Humaira Bano, Syeda Hajera Habib
BACKGROUND: To investigate the effect of the combination of hydroalcoholic extract of Withania somnifera (WS) and Tribulus terrestris (TT) on letrozole induced polycystic ovarian syndrome (PCOS) in rat. METHODS: Twenty four female Wistar rats of regular estrus cycle were divided into four groups of six animals each. The negative control group received 1 mL of 0.5% carboxy methyl cellulose. The animals of the other groups were treated with letrozole (1 mg/kg) for 21 days for induction of PCOS...
December 2016: Integrative Medicine Research
Fatemeh Eini, Marefat Ghaffari Novin, Khojasteh Joharchi, Ahmad Hosseini, Hamid Nazarian, Abbas Piryaei, Arash Bidadkosh
In polycystic ovary syndrome (PCOS), substantial genetic and environmental alterations, along with hyperandrogenism, affect the quality of oocytes and decrease ovulation rates. To determine the mechanisms underlying these alterations caused specifically by an increase in plasma androgens, the present study was performed in experimentally-induced PCOS mice. As the study model, female B6D2F1 mice were treated with dehydroepiandrosterone (DHEA, 6mg per 100g bodyweight). After 20 days, oocytes at the germinal vesicle and metaphase II stages were retrieved from isolated ovaries and subsequent analyses of oocyte quality were performed for each mouse...
April 26, 2017: Reproduction, Fertility, and Development
Pooja Sagvekar, Vijay Mangoli, Sadhana Desai, Anushree Patil, Srabani Mukherjee
Context: Altered global DNA methylation is indicative of epigenomic instability concerning chronic diseases. Investigating its incidence and association with polycystic ovary syndrome (PCOS) is essential to understand the etiopathogenesis of this disorder. Objectives: We assessed global DNA methylation differences in peripheral blood leukocytes (PBLs) and cumulus granulosa cells (CGCs) of controls and women with PCOS; and their association with PCOS and its traits...
April 1, 2017: Journal of Clinical Endocrinology and Metabolism
Marziyeh Salehi Jahromi, Fahimeh Ramezani Tehrani, Jennifer W Hill, Mahsa Noroozzadeh, Maryam Zarkesh, Asghar Ghasemi, Azita Zadeh-Vakili
Impaired ovarian follicle development, the hallmark of polycystic ovarian syndrome (PCOS), is believed to be due to the changes in expression of related genes such as follistatin (FST). Expression of FST gene and methylation level of its promoter in theca cells from adult female rats, prenatally exposed to androgen excess, during different phases of the estrus cycle was determined and compared with controls. Eight pregnant Wistar rats (experimental group) were treated by subcutaneous injection of 5 mg free testosterone on day 20 of pregnancy, while controls (n = 8) received 500 ml solvent...
June 2017: Gynecological Endocrinology
Li-Le Jiang, Juan-Ke Xie, Jin-Quan Cui, Duo Wei, Bao-Li Yin, Ya-Nan Zhang, Yuan-Hui Chen, Xiao Han, Qian Wang, Cui-Lian Zhang
BACKGROUND: DNA methylation modification has been proved to influence the phenotype of polycystic ovary syndrome (PCOS). Genome-wide association studies (GWAS) demonstrate that yes-associated protein (YAP1) genetic sites are associated with PCOS. The study aims to detect the methylation status of YAP1 promoter in ovary granulosa cells (GCs) of PCOS patients and explore novel therapeutic targets for PCOS. METHODS: Randomized controlled trial was applied and a total of 72 women were included in the study, including 36 cases of PCOS patients and 36 cases of health controls...
January 2017: Medicine (Baltimore)
Hongcui Zhao, Yue Zhao, Yun Ren, Min Li, Tianjie Li, Rong Li, Yang Yu, Jie Qiao
OBJECTIVE: To investigate PPARGC1A promoter methylation and mitochondria DNA (mtDNA) content in the leukocytes of women with polycystic ovary syndrome (PCOS) and analyze the relationship between these indices and metabolic risk for women with PCOS. DESIGN: Cross-sectional study. SETTING: University hospital. PATIENT(S): A total of 175 women with PCOS and 127 healthy controls. INTERVENTION(S): None...
February 2017: Fertility and Sterility
David H Abbott, Jon E Levine, Daniel A Dumesic
Genetics-based studies of women with polycystic ovary syndrome (PCOS) implicate &gt;20 PCOS risk genes that collectively account for &lt;10% of PCOS. Clinicians now consider that either rare alleles or non-genetic, potentially epigenetic, developmental origins may contribute key pathogenic components to &gt;90% of PCOS cases. Animal models convincingly demonstrate excess fetal testosterone exposure in females as a reliable, epigenetic, developmental origin for PCOS-like traits. In particular, nonhuman primates (NHPs) provide the most faithful emulation of PCOS-like pathophysiology, likely because of close similarities to humans in genomic, developmental, reproductive and metabolic characteristics, as well as aging...
2016: Current Pharmaceutical Design
Kamthorn Pruksananonda, Artisa Wasinarom, Wisan Sereepapong, Porntip Sirayapiwat, Prakasit Rattanatanyong, Apiwat Mutirangura
OBJECTIVE: The long interspersed elements (LINE-1, L1s) are a group of genetic elements found in large numbers in the human genome that can translate into phenotype by controlling genes. Growing evidence supports the role of epigenetic in polycystic ovary syndrome (PCOS). The purpose of this study is to evaluate the DNA methylation levels in LINE-1 in a tissue-specific manner using cumulus cells from patients with PCOS compared with normal controls. METHODS: The study included 19 patients with PCOS and 22 control patients who were undergoing controlled ovarian hyperstimulation...
June 2016: Clinical and Experimental Reproductive Medicine
Shuxia Li, Dongyi Zhu, Hongmei Duan, Anran Ren, Dorte Glintborg, Marianne Andersen, Vibe Skov, Mads Thomassen, Torben Kruse, Qihua Tan
As a universally common endocrinopathy in women of reproductive age, the polycystic ovarian syndrome is characterized by composite clinical phenotypes reflecting the contributions of reproductive impact of ovarian dysfunction and metabolic abnormalities with widely varying symptoms resulting from interference of the genome with the environment through integrative biological mechanisms including epigenetics. We have performed a genome-wide DNA methylation analysis on polycystic ovarian syndrome and identified a substantial number of genomic sites differentially methylated in the whole blood of PCOS patients and healthy controls (52 sites, false discovery rate < 0...
March 28, 2017: Oncotarget
Jiawei Xu, Xiao Bao, Zhaofeng Peng, Linlin Wang, Linqing Du, Wenbin Niu, Yingpu Sun
Polycystic ovary syndrome (PCOS) affects approximately 7% of the reproductive-age women. A growing body of evidence indicated that epigenetic mechanisms contributed to the development of PCOS. The role of DNA modification in human PCOS ovary granulosa cell is still unknown in PCOS progression. Global DNA methylation and hydroxymethylation were detected between PCOS' and controls' granulosa cell. Genome-wide DNA methylation was profiled to investigate the putative function of DNA methylaiton. Selected genes expressions were analyzed between PCOS' and controls' granulosa cell...
May 10, 2016: Oncotarget
Milana Kokosar, Anna Benrick, Alexander Perfilyev, Romina Fornes, Emma Nilsson, Manuel Maliqueo, Carl Johan Behre, Antonina Sazonova, Claes Ohlsson, Charlotte Ling, Elisabet Stener-Victorin
Genetic and epigenetic factors may predispose women to polycystic ovary syndrome (PCOS), a common heritable disorder of unclear etiology. Here we investigated differences in genome-wide gene expression and DNA methylation in adipose tissue from 64 women with PCOS and 30 controls. In total, 1720 unique genes were differentially expressed (Q < 0.05). Six out of twenty selected genes with largest expression difference (CYP1B1, GPT), genes linked to PCOS (RAB5B) or type 2 diabetes (PPARG, SVEP1), and methylation (DMAP1) were replicated in a separate case-control study...
March 15, 2016: Scientific Reports
M D Saenz-de-Juano, K Billooye, J Smitz, E Anckaert
STUDY HYPOTHESIS: Does in vitro follicle culture (IFC) have an effect on maintenance of imprinted DNA methylation in preimplantation mouse embryos? STUDY FINDING: We report similar alterations in the methylation pattern of H19 imprinted maternally expressed transcript (H19), small nuclear ribonucleoprotein polypeptide N (Snrpn) and mesoderm specific transcript (Mest) imprinted genes in mouse blastocysts obtained after ovulation induction and IFC. Furthermore, we observed no differences in the gene expression of maternal effect proteins related with imprinting maintenance between superovulated in vivo grown or IFC oocytes...
June 2016: Molecular Human Reproduction
Michelle R Jones, Meredith A Brower, Ning Xu, Jinrui Cui, Emebet Mengesha, Yii-Der I Chen, Kent D Taylor, Ricardo Azziz, Mark O Goodarzi
Genome wide association studies (GWAS) have revealed 11 independent risk loci for polycystic ovary syndrome (PCOS), a common disorder in young women characterized by androgen excess and oligomenorrhea. To put these risk loci and the single nucleotide polymorphisms (SNPs) therein into functional context, we measured DNA methylation and gene expression in subcutaneous adipose tissue biopsies to identify PCOS-specific alterations. Two genes from the LHCGR region, STON1-GTF2A1L and LHCGR, were overexpressed in PCOS...
August 2015: PLoS Genetics
Esra Bahar Gur, Muammer Karadeniz, Guluzar Arzu Turan
Polycystic ovary syndrome (PCOS) is a common endocrine disorder that affects up to 6.8% of reproductive age women. Experimental research and clinical observations suggest that PCOS may originate in the very early stages of development, possibly even during intrauterine life. This suggests that PCOS is either genetically-transmitted or is due to epigenetic alterations that develop in the intrauterine microenvironment. Although familial cases support the role of genetic factors, no specific genetic pattern has been defined in PCOS...
July 10, 2015: World Journal of Diabetes
Ying-Ying Yu, Cui-Xiang Sun, Yin-Kun Liu, Yan Li, Li Wang, Wei Zhang
OBJECTIVE: To compare genome-wide DNA methylation profiles in ovary tissue from women with polycystic ovary syndrome (PCOS) and healthy controls. DESIGN: Case-control study matched for age and body mass index. SETTING: University-affiliated hospital. PATIENT(S): Ten women with PCOS who underwent ovarian drilling to induce ovulation and 10 healthy women who were undergoing laparoscopic sterilization, hysterectomy for benign conditions, diagnostic laparoscopy for pelvic pain, or oophorectomy for nonovarian indications...
July 2015: Fertility and Sterility
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