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https://www.readbyqxmd.com/read/28324051/androgen-stimulates-growth-of-mouse-preantral-follicles-in-vitro-interaction-with-follicle-stimulating-hormone-and-with-growth-factors-of-the-tgf%C3%AE-superfamily
#1
Mhairi Laird, Kacie Thomson, Mark Fenwick, Jocelyn Mora, Stephen Franks, Kate Hardy
Androgens are essential for the normal function of mature antral follicles but also have a role in the early stages of follicle development. Polycystic ovary syndrome (PCOS), the commonest cause of anovulatory infertility, is characterized by androgen excess and aberrant follicle development that includes accelerated early follicle growth. We have examined the effects of testosterone and dihydrotestosterone (DHT) on development of isolated mouse preantral follicles in culture with the specific aims of investigating interaction with FSH, the steroidogenic pathway and with growth factors of the TGFβ superfamily that are known to have a role in early follicle development...
January 24, 2017: Endocrinology
https://www.readbyqxmd.com/read/28324041/line1-cpg-dna-hypomethylation-in-granulosa-cells-and-blood-leukocytes-is-associated-with-pcos-and-related-traits
#2
Pooja Sagvekar, Vijay Mangoli, Sadhana Desai, Anushree Patil, Srabani Mukherjee
CONTEXT: Altered global DNA methylation is indicative of epigenomic instability concerning chronic disease-states. Investigating its incidence and association with polycystic ovary syndrome (PCOS) is essential towards understanding the etiopathogenesis of this disorder. OBJECTIVES: To assess, global DNA methylation differences in peripheral blood leukocytes (PBLs) and cumulus granulosa cells (CGCs) of PCOS and controls and their association with PCOS and its traits...
January 9, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323956/hyperhomocysteinemia-promotes-insulin-resistance-and-adipose-tissue-inflammation-in-pcos-mice-through-modulating-m2-macrophage-polarization-via-estrogen-suppression
#3
Xinyu Qi, Bochun Zhang, Yue Zhao, Rong Li, Hsun-Ming Chang, Yanli Pang, Jie Qiao
It has been shown that serum homocycteine (Hcy) levels are higher in women with polycystic ovary syndrome (PCOS). However, the specific role of hyperhomocycteinemia (HHcy) in the development of PCOS has never been reported. Adipose tissue inflammation is featured by the infiltration of macrophages that plays a critical role in the pathogenesis of glucose and insulin intolerance. In this study, C57BL/6 mice were treated with dehydroepiandrosterone (DHEA) and/or high methionine diet to induce PCOS and HHcy mice models...
March 15, 2017: Endocrinology
https://www.readbyqxmd.com/read/28323951/assessing-energy-requirements-in-women-with-polycystic-ovary-syndrome-a-comparison-against-doubly-labeled-water
#4
Nicholas T Broskey, Monica C Klempel, L Anne Gilmore, Elizabeth F Sutton, Abby D Altazan, Jeffrey H Burton, Eric Ravussin, Leanne M Redman
Context: Weight loss is prescribed to offset the deleterious consequences of polycystic ovary syndrome (PCOS), but a successful intervention requires an accurate assessment of energy requirements. Objective: Describe energy requirements in women with PCOS and evaluate common prediction equations compared to doubly-labeled water (DLW). Design: Cross-sectional study. Setting: Academic research center. Participants: Twenty-eight weight-stable women with PCOS completed a 14-day DLW study along with measures of body composition, resting metabolic rate, and physical activity assessment by accelerometry...
March 8, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323926/psychological-distress-is-more-prevalent-in-fertile-age-and-premenopausal-women-with-pcos-symptoms-15-yr-follow-up
#5
Salla Karjula, Laure Morin-Papunen, Juha Auvinen, Aimo Ruokonen, Katri Puukka, Stephen Franks, Marjo-Riitta Järvelin, Juha S Tapanainen, Jari Jokelainen, Jouko Miettunen, Terhi T Piltonen
Context: Polycystic ovary syndrome (PCOS) is associated with increased psychological distress; obesity and hyperandrogenism being suggested as key promoters. Objectives: To investigate the prevalence of anxiety/depression and their coexistence in women with PCOS/PCOS symptoms at ages 31 and 46. The roles of obesity, hyperandrogenism and awareness of PCOS on psychological distress were also assessed. Design: Population based follow-up. Setting: Northern Finland Birth Cohort 1966 with 15-year follow-up...
February 27, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28323907/resveratrol-inhibits-androgen-production-of-human-adrenocortical-h295r-cells-by-lowering-cyp17-and-cyp21-expression-and-activities
#6
Nesa Marti, Nadia Bouchoucha, Kay-Sara Sauter, Christa E Flück
Resveratrol, a natural compound found in grapes, became very popular for its suggested protective effects against aging. It was reported to have similar positive effects on the human metabolism as caloric restriction. Recently, positive effects of resveratrol on steroid biosynthesis in cell systems and in humans suffering from polycystic ovary syndrome have also been reported, but the exact mechanism of this action remains unknown. Sirtuins seem targeted by resveratrol to mediate its action on energy homeostasis...
2017: PloS One
https://www.readbyqxmd.com/read/28323503/add-on-dpp-4-inhibitor-alogliptin-alone-or-in-combination-with-pioglitazone-improved-%C3%AE-cell-function-and-insulin-sensitivity-in-metformin-treated-pcos
#7
Mojca Jensterle, Katja Goricar, Andrej Janez
PURPOSE: Impaired β-cell function remains unaddressed in PCOS. The aim of the study was to evaluate whether dipeptidyl peptidase-4 (DPP-4) inhibitor alogliptin (ALO) alone or in combination with pioglitazone (PIO) improves β-cell function along with insulin resistance (IR) in metformin (MET) treated obese women with PCOS with persistent IR. MATERIALS AND METHODS: In 12-week randomized study, ALO 25 mg QD (n=15) or ALO 25 mg QD and PIO 30 mg QD (n=15) was added to MET 1000 mg BID in PCOS women (aged 34...
March 21, 2017: Endocrine Research
https://www.readbyqxmd.com/read/28320971/neuroendocrine-androgen-action-is-a-key-extraovarian-mediator-in-the-development-of-polycystic-ovary-syndrome
#8
Aimee S L Caldwell, Melissa C Edwards, Reena Desai, Mark Jimenez, Robert B Gilchrist, David J Handelsman, Kirsty A Walters
Polycystic ovary syndrome (PCOS) is a complex hormonal disorder characterized by reproductive, endocrine, and metabolic abnormalities. As the origins of PCOS remain unknown, mechanism-based treatments are not feasible and current management relies on treatment of symptoms. Hyperandrogenism is the most consistent PCOS characteristic; however, it is unclear whether androgen excess, which is treatable, is a cause or a consequence of PCOS. As androgens mediate their actions via the androgen receptor (AR), we combined a mouse model of dihydrotestosterone (DHT)-induced PCOS with global and cell-specific AR-resistant (ARKO) mice to investigate the locus of androgen actions that mediate the development of the PCOS phenotype...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28320416/effect-of-the-r92h-and-a379v-genotypes-of-platelet-activating-factor-acetylhydrolase-on-its-enzyme-activity-oxidative-stress-and-metabolic-profile-in-chinese-women-with-polycystic-ovary-syndrome
#9
Renjiao Zhang, Qi Song, Hongwei Liu, Huai Bai, Yujin Zhang, Qingqing Liu, Linbo Guan, Ping Fan
BACKGROUND: The G994T polymorphism in platelet-activating factor acetylhydrolase (PAF-AH) gene is associated with the risk of polycystic ovary syndrome (PCOS). The aim of this study was to investigate the relationship between R92H and A379V variants of the PAF-AH gene and the risk of PCOS and to evaluate the effects of the genotypes on PAF-AH activities and clinical, metabolic and oxidative stress indexes in Chinese women. METHODS: A total of 862 patients with PCOS based on the Rotterdam consensus criteria and 750 control women from a population of Chinese Han nationality in the Chengdu area were studied from 2006-2015...
March 20, 2017: Lipids in Health and Disease
https://www.readbyqxmd.com/read/28319674/assessment-of-circulating-betatrophin-concentrations-in-lean-glucose-tolerant-women-with-polycystic-ovary-syndrome
#10
Onur Erol, Mustafa Kemal Özel, Hamit Yaşar Ellidağ, Tayfun Toptaş, Aysel Uysal Derbent, Necat Yılmaz
The aims of the current study were to investigate the betatrophin levels in lean glucose-tolerant women with polycystic ovary syndrome (PCOS), and to explore the relationships between these levels and antropometric, hormonal and metabolic parameters. The study population consisted of 50 lean (body mass index [BMI] < 25 kg/m(2)) women diagnosed with PCOS using the Rotterdam criteria, and 60 age- and BMI-matched healthy controls without any features of clinical or biochemical hyperandrogenism. Before recruitment, glucose tolerance was evaluated in all of the subjects using the 2-h 75 g oral glucose-tolerance test, and only those exhibiting normal glucose tolerance were enrolled...
March 20, 2017: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28316072/the-effects-of-dash-diet-on-weight-loss-anti-m%C3%A3-llerian-hormone-and-metabolic-profiles-in-women-with-polycystic-ovary-syndrome-a-randomized-clinical-trial
#11
Fatemeh Foroozanfard, Hamideh Rafiei, Mansooreh Samimi, Hamid Reza Gilasi, Roohangiz Gorjizadeh, Zahra Heidar, Zatollah Asemi
OBJECTIVE: This study was designed to evaluate the effects of the Dietary Approaches to Stop Hypertension (DASH diet) on weight loss, anti-Müllerian hormone (AMH) and metabolic profiles in women with polycystic ovary syndrome (PCOS). DESIGN, PATIENTS AND MEASUREMENTS: A randomized controlled clinical trial was conducted among 60 overweight or obese patients with PCOS. Patients were randomly assigned to receive either low-calorie DASH (N=30) or control diet (N=30) for 12 weeks...
March 18, 2017: Clinical Endocrinology
https://www.readbyqxmd.com/read/28316042/serum-level-of-zinc-and-copper-in-sudanese-women-with-polycystic-ovarian-syndrome
#12
Manal E Sharif, Isahg Adam, Mohamed A Ahmed, Duria A Rayis, Hamdan Z Hamdan
The study aimed to evaluate the serum level of zinc and copper in women with polycystic ovarian syndrome (PCOS). A case-control study was conducted at Saad Abualila infertility center (Khartoum, Sudan). The cases were women who had a PCOS based on Rotterdam criteria. The controls were infertile women with no evidence of PCOS. The socio-demographic characteristics and medical history data were gathered using questionnaires. Zinc and copper levels were measured using atomic absorption spectrophotometer. While there was no difference in zinc and copper levels between the two groups (50 women in each arm), mean (SD) of body mass index (BMI) was significantly higher in women with PCOS compared to the controls [28...
March 18, 2017: Biological Trace Element Research
https://www.readbyqxmd.com/read/28315565/heart-rate-variability-in-normal-weight-patients-with-polycystic-ovary-syndrome
#13
Celal Kilit, Türkan Paşalı Kilit
OBJECTIVE: Polycystic ovary syndrome (PCOS) is an endocrine disease closely related to several risk factors of cardiovascular disease. Obese women with PCOS show altered autonomic modulation. The results of studies investigating cardiac autonomic functions of normal-weight women with PCOS are conflicting. The aim of the study was to assess the reactivity of cardiac sympathovagal balance in normal-weight women with PCOS by heart rate variability analysis. METHODS: We examined the heart rate variability in 60 normal-weight women with PCOS and compared them with that in 60 age-matched healthy women having a similar metabolic profile...
March 9, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28303702/studies-on-the-quality-nutrition-in-women-with-polycystic-ovary-syndrome-pcos
#14
Małgorzata Szczuko, Patrycja Sankowska, Marta Zapałowska-Chwyć, Paweł Wysokiński
Background: Polycystic ovary syndrome (PCOS) manifests itself with various symptoms, therefore it interests representatives of many medical specializations: general practitioners, gynecologists, endocrinologists, dermatologists, cardiologists and those who deal with metabolic disorders, such as dieticians. Objective: The aim of this study was perform the qualitative assessment of components of diets of women with PCOS as one of the major factor contributing to the disease...
2017: Roczniki Państwowego Zakładu Higieny
https://www.readbyqxmd.com/read/28303117/expression-patterns-and-correlations-with-metabolic-markers-of-zinc-transporters-zip14-and-znt1-in-obesity-and-polycystic-ovary-syndrome
#15
Trine Maxel, Pernille Fog Svendsen, Kamille Smidt, Jesper Krogh Lauridsen, Birgitte Brock, Steen Bønlykke Pedersen, Jørgen Rungby, Agnete Larsen
Polycystic ovary syndrome (PCOS) is associated with infertility, increased androgen levels, and insulin resistance. In adipose tissue, zinc facilitates insulin signaling. Circulating zinc levels are altered in obesity, diabetes, and PCOS; and zinc supplementation can ameliorate metabolic disturbances in PCOS. In adipose tissue, expression of zinc influx transporter ZIP14 varies with body mass index (BMI), clinical markers of metabolic syndrome, and peroxisome proliferator-activated receptor gamma (PPARG). In this study, we investigated expression levels of ZIP14 and PPARG in subcutaneous adipose tissue of 36 PCOS women (17 lean and 19 obese women) compared with 23 healthy controls (7 lean and 16 obese women)...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28300464/serum-visfatin-vascular-endothelial-growth-factor-and-matrix-metalloproteinase-9-in-women-with-polycystic-ovary-syndrome
#16
Kalliopi Dambala, Dimitrios Vavilis, Eleni Bili, Dimitrios G Goulis, Basil C Tarlatzis
AIM: To evaluate serum concentrations of visfatin, vascular endothelial growth factor (VEGF) and matrix metalloproteinase-9 (MMP-9) in women with polycystic ovary syndrome (PCOS) and to investigate their possible role as early endothelial markers in PCOS. METHODS: Forty-two women with PCOS and 42 controls, matched for age and weight, were included in the study. Serum concentrations of follicle-stimulating hormone (FSH), luteinizing hormone (LH), prolactin, total testosterone (tT), Δ4-androstenedione (Δ4A), dehydroepinadrosterone sulphate (DHEA-S), 17-OH-progesterone, sex hormone-binding protein (SHBG), thyroid-stimulating hormone (TSH), free thyroxine (fT4), visfatin, VEGF and MMP-9 were measured in all women; free androgen index (FAI) was calculated as well...
March 16, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28299992/developmental-programming
#17
Muraly Puttabyatappa, Ashleigh Irwin, Jacob D Martin, Makeda Mesquitta, Almudena Veiga-Lopez, Vasantha Padmanabhan
Prenatal testosterone (T)-treated sheep, similar to women with polycystic ovary syndrome (PCOS), manifests reproductive defects that include multifollicular ovarian phenotype. Women with PCOS manifest increased ovarian matrix metalloproteinases (MMPs) activity. We tested the hypothesis that gestational T excess in sheep would alter ovarian expression of MMPs, tissue inhibitors of MMP (TIMP) and their target proteins laminin B (LAMB), collagen, tumor necrosis factor alpha (TNF), and connexin 43 (GJA1) consistent with increased MMP activity and that these changes are developmentally regulated...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28299548/association-study-of-hnf1a-in-women-with-polycystic-ovary-syndrome
#18
Yue Lv, Changfa Sun, Ye Tian, Shigang Zhao, Yuehong Bian, Lei Cheng, Mei Sun, Hong-Bin Liu, Han Zhao, Jinlong Ma
PURPOSE: This study aims to ascertain whether an association exists between hepatocyte nuclear factor 1 alpha (HNF1A) and polycystic ovary syndrome (PCOS). METHODS: One thousand one hundred thirty-eight PCOS and 1125 healthy control Han Chinese women were recruited from Reproductive Hospital Affiliated to Shandong University. Serum hormone, blood lipid level, and genomic DNA were obtained from the peripheral blood for this research. Two single-nucleotide polymorphisms (SNPs)-rs2393791 and rs7305618-located in HNF1A were genotyped using the Sequenom MassARRAY system...
March 15, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28294594/the-anti-inflammatory-protein-kallistatin-is-associated-with-carotid-intima-media-thickness-in-women-with-polycystic-ovary-syndrome
#19
Mehmet Calan, Aslı Guler, Gokcen Unal Kocabas, Pınar Alarslan, Merve Bicer, Cetin Imamoglu, Arif Yuksel, Giray Bozkaya, Oktay Bilgir
BACKGROUND: Kallistatin is a secreted protein that acts as a tissue kallikrein inhibitor. It has antiinflammatory, antioxidant and vasoprotective properties. Polycystic ovary syndrome (PCOS) is a reproductive and metabolic disease associated with low-grade chronic inflammation and multiple risk factors for cardiovascular diseases. The aims of this study were to ascertain whether circulating kallistatin levels are altered in women with PCOS, and whether there is an association between kallistatin and carotid intima media thickness (cIMT) as well as inflammatory markers high-sensitivity C-reactive protein (hs-CRP) and tumor necrosis factor-α (TNF-α)...
March 14, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28293234/dysbiosis-of-gut-microbiota-associated-with-clinical-parameters-in-polycystic-ovary-syndrome
#20
Rui Liu, Chenhong Zhang, Yu Shi, Feng Zhang, Linxia Li, Xuejiao Wang, Yunxia Ling, Huaqing Fu, Weiping Dong, Jian Shen, Andrew Reeves, Andrew S Greenberg, Liping Zhao, Yongde Peng, Xiaoying Ding
Polycystic ovary syndrome (PCOS) is a common endocrine and metabolic disorder in women. Gut microbiota has been implicated to play a critical role in metabolic diseases and may modulate the secretion of mediators of the brain-gut axis. Interaction between gut microbiota and the endocrine and biochemical disturbances in PCOS still remains elusive. Here, we showed an altered gut microbiota significantly correlated with PCOS phenotype. There were 33 patients with PCOS (non-obese PCOS individuals, PN, n = 12; obese PCOS individuals, PO, n = 21) as well as 15 control subjects (non-obese control individuals, CN, n = 9; obese control individuals, CO, n = 6) enrolled in our study...
2017: Frontiers in Microbiology
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