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https://www.readbyqxmd.com/read/28645211/akr1c3-mediated-adipose-androgen-generation-drives-lipotoxicity-in-women-with-polycystic-ovary-syndrome
#1
Michael W O'Reilly, Punith Kempegowda, Mark Walsh, Angela E Taylor, Konstantinos N Manolopoulos, J William Allwood, Robert K Semple, Daniel Hebenstreit, Warwick B Dunn, Jeremy W Tomlinson, Wiebke Arlt
Context: Polycystic ovary syndrome (PCOS) is a prevalent metabolic disorder, occurring in up to 10% of women of reproductive age. PCOS is associated with insulin resistance and cardiovascular risk. Androgen excess is a defining feature of PCOS and has been suggested as causally associated with insulin resistance; however, mechanistic evidence linking both is lacking. We hypothesized that adipose tissue is an important site linking androgen activation and metabolic dysfunction in PCOS...
June 22, 2017: Journal of Clinical Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28645054/computational-analysis-of-the-toxcast-estrogen-receptor-agonist-assays-to-predict-vitellogenin-induction-by-chemicals-in-male-fish
#2
David A Dreier, Nancy D Denslow, Christopher J Martyniuk
Endocrine disruptors, especially estrogen receptor (ER) agonists, have received considerable research attention. While there are several mechanistic endpoints for ER agonism in the Endocrine Disruptor Screening Program, there have been growing efforts to develop high-throughput screening assays and computational models to reduce testing cost, time, and animal use. For example, there are 16 ER agonist assays and an integrated computational model in ToxCast. In the present study, we examined the relationship between ToxCast ER agonist assays and model activity to male vitellogenin induction in the Fish-Short Term Reproduction Assay...
June 13, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28645042/the-changing-health-priorities-of-earthquake-response-and-implications-for-preparedness-a-scoping-review
#3
REVIEW
C Cartwright, M Hall, A C K Lee
OBJECTIVES: Earthquakes have substantial impacts on mortality in low- and middle-income countries (LMIC). The academic evidence base to support Disaster Risk Reduction activities in LMIC settings is, however, limited. We sought to address this gap by identifying the health and healthcare impacts of earthquakes in LMICs and to identify the implications of these findings for future earthquake preparedness. STUDY DESIGN: Scoping review. METHODS: A scoping review was undertaken with systematic searches of indexed databases to identify relevant literature...
June 20, 2017: Public Health
https://www.readbyqxmd.com/read/28644982/assessment-of-sublethal-endpoints-after-chronic-exposure-of-the-nematode-caenorhabditis-elegans-to-palladium-platinum-and-rhodium
#4
Gerhard Schertzinger, Sonja Zimmermann, Daniel Grabner, Bernd Sures
The aim of this study was to investigate chronic effects of the platinum-group elements (PGE) palladium (Pd), platinum (Pt) and rhodium (Rh) on the nematode Caenorhabditis elegans. Aquatic toxicity testing was carried out according to ISO 10872 by determining 96 h EC50 values for sublethal endpoints, including growth, fertility and reproduction. Single PGE standard solutions were used as metal source. Based on the EC50 values for Pt, reproduction (96 h EC50 = 497 μg/L) was the most sensitive endpoint followed by fertility (96 h EC50 = 726 μg/L) and growth (96 h EC50 = 808 μg/L)...
June 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28644873/circular-rna-expression-profiling-of-human-granulosa-cells-during-maternal-aging-reveals-novel-transcripts-associated-with-assisted-reproductive-technology-outcomes
#5
Jing Cheng, Jia Huang, Suzhen Yuan, Su Zhou, Wei Yan, Wei Shen, Yun Chen, Xi Xia, Aiyue Luo, Da Zhu, Shixuan Wang
Circular RNAs (circRNAs) are a unique class of endogenous RNAs which could be used as potential diagnostic and prognostic biomarkers of many diseases. Our study aimed to investigate circRNA profiles in human granulosa cells (GCs) during maternal aging and to uncover age-related circRNA variations that potentially reflect decreased oocyte competence. CircRNAs in GCs from in vitro fertilization (IVF) patients with young age (YA, ≤ 30 years) and advanced age (AA, ≥ 38 years) were profiled by microarray, and validated in 20 paired samples...
2017: PloS One
https://www.readbyqxmd.com/read/28644857/beneficial-effects-of-hibiscus-rosa-sinensis-l-flower-aqueous-extract-in-pregnant-rats-with-diabetes
#6
Luana Alves Freitas Afiune, Thaís Leal-Silva, Yuri Karen Sinzato, Rafaianne Queiroz Moraes-Souza, Thaigra Sousa Soares, Kleber Eduardo Campos, Ricardo Toshio Fujiwara, Emilio Herrera, Débora Cristina Damasceno, Gustavo Tadeu Volpato
PURPOSE: The Hibiscus rosa-sinensis flower is widely used in Brazilian traditional medicine for the treatment of diabetes and has shown antifertility activity in female Wistar rats. However, there is no scientific confirmation of its effect on diabetes and pregnancy. The aim of this study was evaluate the effect of aqueous extract of H. rosa-sinensis flowers on maternal-fetal outcome in pregnant rats with diabetes. METHODS: Diabetes was induced by streptozotocin (STZ, 40 mg/kg) in virgin, adult, female Wistar rats...
2017: PloS One
https://www.readbyqxmd.com/read/28644715/biological-responses-of-the-american-coot-fulica-americana-in-wetlands-with-contrasting-environmental-conditions-basin-of-m%C3%A3-xico
#7
María Eugenia López-Islas, Itzel Ibarra-Meza, Esperanza Ortiz-Ordóñez, Liliana Favari, J Elías Sedeño-Díaz, Eugenia López-López
Wetland ecosystems are subject to severe impacts (physical and chemical) and to the input of various xenobiotics that provoke toxicological consequences. Waterbirds are potential sentinel species of these environments. To analyze how habitat conditions affect the health of Fulica americana, early-warning biomarkers, histopathology, somatic indices, and water quality were examined in two wetlands of the Basin of Mexico: Xochimilco, an urban wetland highly eutrophic with a mixture of pollutants, and Tecocomulco (the reference site), a rural wetland with hunting migratory birds in winter, and with some agricultural contaminants...
June 23, 2017: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/28644368/vitamin-d-deficiency-is-not-associated-with-growth-or-the-incidence-of-common-morbidities-among-tanzanian-infants
#8
Christopher R Sudfeld, Karim P Manji, Emily R Smith, Said Aboud, Rodrick Kisenge, Wafaie W Fawzi, Christopher P Duggan
OBJECTIVE: The objective of this study was to examine risk factors for vitamin D deficiency and determine the association of vitamin D status with child growth and incidence of common morbidities among Tanzanian infants. METHODS: A prospective cohort of 581 Tanzanian infants born to HIV-uninfected mothers had serum 25-hydroxyvitamin D (25(OH)D) assessed at 6 weeks and 6 months of age. Infants were seen at monthly clinic visits for growth monitoring until 18 months of age...
June 21, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28644338/committee-opinion-no-706-sexual-health
#9
(no author information available yet)
Sexuality involves a broad range of expressions of intimacy and is fundamental to self-dentification, with strong cultural, biologic, and psychologic components. Obstetrician-gynecologists often are consulted by patients about sexual health and are in a unique position to open a dialogue on sexual health issues. Several obstacles to frank conversations with patients about sexual health exist, including a lack of adequate training and confidence in the topic, a perception that there are few treatment options, a lack of adequate clinical time to obtain a sexual history, patients' reluctance to initiate the conversation, and the underestimation of the prevalence of sexual dysfunction...
July 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28644334/clinical-updates-in-women-s-health-care-summary-gynecologic-and-obstetric-care-for-breast-cancer-survivors-primary-and-preventive-care-review
#10
Jennifer Griffin Miller
Breast cancer treatment has an impact on the physical, psychologic, sexual, and reproductive aspects of women's lives. Therefore, it is important for obstetrician-gynecologists to be well versed in the screening, diagnosis, and management of breast cancer. This monograph is an overview of critical issues related to the provision of ongoing care to breast cancer survivors.
July 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28644331/committee-opinion-no-706-summary-sexual-health
#11
(no author information available yet)
Sexuality involves a broad range of expressions of intimacy and is fundamental to self-dentification, with strong cultural, biologic, and psychologic components. Obstetrician-gynecologists often are consulted by patients about sexual health and are in a unique position to open a dialogue on sexual health issues. Several obstacles to frank conversations with patients about sexual health exist, including a lack of adequate training and confidence in the topic, a perception that there are few treatment options, a lack of adequate clinical time to obtain a sexual history, patients' reluctance to initiate the conversation, and the underestimation of the prevalence of sexual dysfunction...
July 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28643786/a-unified-model-of-hymenopteran-preadaptations-that-trigger-the-evolutionary-transition-to-eusociality
#12
Andrés E Quiñones, Ido Pen
Explaining the origin of eusociality, with strict division of labour between workers and reproductives, remains one of evolutionary biology's greatest challenges. Specific combinations of genetic, behavioural and demographic traits in Hymenoptera are thought to explain their relatively high frequency of eusociality, but quantitative models integrating such preadaptations are lacking. Here we use mathematical models to show that the joint evolution of helping behaviour and maternal sex ratio adjustment can synergistically trigger both a behavioural change from solitary to eusocial breeding, and a demographic change from a life cycle with two reproductive broods to a life cycle in which an unmated cohort of female workers precedes a final generation of dispersing reproductives...
June 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28643614/consensus-statement-for-non-hormonal-based-treatments-for-menopausal-symptoms
#13
Jane Woyka
Since the June 2014 consensus statement published in Post Reproductive Health we have had definitive guidelines on menopause treatment from the National Institute for Clinical Excellence in November 2015. These included robust and evidence based information about many non-estrogen based treatments, which are particularly useful for patients who do not wish to take hormone replacement therapy, or who have medical contraindications to hormonal therapy such as hormone dependent cancers. Whilst none of these therapies is as effective as hormones, we must be able to advise patients about them and recommend which treatments may be helpful for individual women...
June 2017: Post Reproductive Health
https://www.readbyqxmd.com/read/28643569/iron-overload-directly-affecting-the-ovaries-in-a-patient-with-diamond-blackfan-anaemia-a-case-report
#14
Mariano Mascarenhas, Victoria Rawnsley, Adam Balen
Iron is a 'one-way' element and the primary point of regulation of body iron stores is at the level of intestinal iron absorption. Repeated blood transfusions for congenital anaemias bypass this regulatory checkpoint and inevitably lead to iron overload in the long-term. Iron overload causes multi-organ dysfunction of the heart, liver, pancreas and joints. It also causes reproductive toxicity primarily through its damaging effect on the anterior pituitary leading to hypogonadotrophic hypogonadism. Another less understood mechanism of reproductive toxicity is direct gonadal damage of excess free iron...
June 23, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28643503/the-use-of-morphokinetic-as-a-predictor-of-implantation
#15
Alberto Tejera, Belén Aparicio-Ruiz, Marcos Meseguer
In recent years the increased efforts intended for improving future outcomes in the laboratory have focused mostly on the search of additional markers of embryo quality to add up present embryo selection criteria. Time-lapse system involves an alternative tool in assisted reproduction techniques, being able to improve the embryo selection from a dynamic and interactive approach while standard embryo assessment implies a subjective and static morphology evaluation and consequently reducing the information gained for embryo selection, time-lapse technology adds several morphokinetic parameters, providing additional input for embryo evaluation...
June 22, 2017: Minerva Ginecologica
https://www.readbyqxmd.com/read/28643447/simultaneous-mapping-of-metabolites-and-individual-macromolecular-components-via-ultra-short-acquisition-delay-1-h-mrsi-in-the-brain-at-7t
#16
Michal Považan, Bernhard Strasser, Gilbert Hangel, Eva Heckova, Stephan Gruber, Siegfried Trattnig, Wolfgang Bogner
PURPOSE: Short-echo-time proton MR spectra at 7T feature nine to 10 distinct macromolecule (MM) resonances that overlap with the signals of metabolites. Typically, a metabolite-nulled in vivo MM spectrum is included in the quantification`s prior knowledge to provide unbiased metabolite quantification. However, this MM model may fail if MMs are pathologically altered. In addition, information about the individual MM peaks is lost. In this study, we aimed to create an improved MM model by parameterization of the in vivo MM spectrum into individual components, and to use this new model to quantify free induction decay MR spectroscopic imaging (FID-MRSI) data...
June 22, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28643182/fvstr1-a-striatin-orthologue-in-fusarium-virguliforme-is-required-for-asexual-development-and-virulence
#17
Kazi T Islam, Jason P Bond, Ahmad M Fakhoury
The soil-borne fungus Fusarium virguliforme causes sudden death syndrome (SDS), one of the most devastating diseases of soybean in North and South America. Despite the importance of SDS, a clear understanding of the fungal pathogenicity factors that affect the development of this disease is still lacking. We have identified FvSTR1, a F. virguliforme gene, which encodes a protein similar to a family of striatin proteins previously reported to regulate signalling pathways, cell differentiation, conidiation, sexual development, and virulence in filamentous fungi...
June 22, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28643176/a-promising-tool-in-retina-regeneration-current-perspectives-and-challenges-when-using-mesenchymal-progenitor-stem-cells-in-veterinary-and-human-ophthalmological-applications
#18
REVIEW
Anna Cislo-Pakuluk, Krzysztof Marycz
Visual impairment is a common ailment of the current world population, with more exposure to CCD screens and fluorescent lighting, approximately 285 billion people suffer from this deficiency and 13% of those are considered clinically blind. More common causes for visual impairment include age-related macular degeneration (AMD), glaucoma and diabetic retinopathy (Zhu et al. Molecular Medicine Reports, 2015; Kolb et al. 2007; Machalińska et al. Current Eye Research, 34(9),748-760, 2009) among a few. As cases of retinal and optic nerve diseases rise, it is vital to find a treatment, which has led to investigation of the therapeutic potential of various stem cells types (Bull et al...
June 22, 2017: Stem Cell Reviews
https://www.readbyqxmd.com/read/28643088/potential-therapeutic-applications-of-human-anti-m%C3%A3-llerian-hormone-amh-analogues-in-reproductive-medicine
#19
REVIEW
Vitaly A Kushnir, David B Seifer, David H Barad, Aritro Sen, Norbert Gleicher
Members of the transforming growth factor-beta (TGF-beta) superfamily are key regulators of various physiological processes. Anti-Müllerian hormone (AMH) which is also commonly known as Müllerian-inhibiting substance (MIS) is a member of the TGF-beta superfamily and an important regulator of reproductive organ differentiation and ovarian follicular development. While AMH has been used for diagnostic purposes as a biomarker for over 15 years, new potential therapeutic applications of recombinant human AMH analogues are now emerging as pharmacologic agents in reproductive medicine...
June 22, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28643028/polycystic-ovary-syndrome-adipose-tissue-and-metabolic-syndrome
#20
REVIEW
Alessandro P Delitala, Giampiero Capobianco, Giuseppe Delitala, Pier Luigi Cherchi, Salvatore Dessole
PURPOSE: Polycystic ovary syndrome (PCOS) is the most common endocrine disorder that affects women of reproductive age and is characterized by ovulatory dysfunction and/or androgen excess or polycystic ovaries. Women with PCOS present a number of systemic symptoms in addition to those related to the reproductive system. It has been associated with functional derangements in adipose tissue, metabolic syndrome, type 2 diabetes, and an increased risk of cardiovascular disease (CVD). METHODS: A detailed literature search on Pubmed was done for articles about PCOS, adipokines, insulin resistance, and metabolic syndrome...
June 22, 2017: Archives of Gynecology and Obstetrics
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