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https://www.readbyqxmd.com/read/29667669/structural-characterization-and-antitumor-activity-of-a-novel-se-polysaccharide-from-selenium-enriched-cordyceps-gunnii
#1
Huiqing Sun, Zhenyuan Zhu, Yali Tang, Yuanyuan Ren, Qiaoying Song, Yun Tang, Yongmin Zhang
Selenium (Se) has been recognized as an essential element. Animals and humans absorb and retain more organic Se than inorganic Se. Bio-transformation is a major approach to transform inorganic Se to organic Se. Cordyceps gunnii (C. gunnii), well known as a Chinese edible and medicinal fungus, has a variety of biological functions. C. gunnii and selenium were combined through liquid-fermentation to obtain selenium-enriched C. gunnii. A novel Se-polysaccharide (SeCPS-II) was extracted from selenium-enriched C...
April 18, 2018: Food & Function
https://www.readbyqxmd.com/read/29667478/retro-inverso-follicle-stimulating-hormone-peptide-mediated-polyethylenimine-complexes-for-targeted-ovarian-cancer-gene-therapy
#2
Mengyu Zhang, Mingxing Zhang, Jing Wang, Qingqing Cai, Ran Zhao, Yi Yu, Haiyan Tai, Xiaoyan Zhang, Congjian Xu
BACKGROUND: The development of nanoparticle drug delivery systems with targeted ligands has the potential to increase treatment efficiency in ovarian cancer. METHODS: We developed a 21-amino acid peptide, YTRDLVYGDPARPGIQGTGTF (L-FP21) conjugated to polyethylenimine (PEI) and methoxy polyethylene glycol (mPEG) to prepare a nanoparticle drug vehicle to target follicle-stimulating hormone receptor (FSHR) in ovarian cancer. At the same time, we optimized the ligand of the nanoparticle vehicle using D-peptides, which consist of D-amino acids (D-FP21)...
November 2018: Drug Delivery
https://www.readbyqxmd.com/read/29665451/tgf-%C3%AE-1-resulting-in-differential-microrna-expression-in-bovine-granulosa-cells
#3
Yefen Xu, Jiaqiang Niu, Guangying Xi, Xuezhi Niu, Yuheng Wang, Ming Guo, Qiangba Yangzong, Yilong Yao, Suolang Sizhu, Jianhui Tian
To explore the expression profile of the cellular miRNAs in bovine ovarian granulosa cells responding to transforming growth factor-β1 (TGF-β1), the effect of TGF-β1 on cell proliferation was firstly investigated by CCK-8 method and the results showed that there was a significant inhibitory effect on bovine granulosa cell proliferation treated with 5/10 ng/mL human recombinant TGF-β1 for 24 h compared to the control (P < 0.05). Then, we performed high-throughput sequencing of two small RNA libraries prepared from cultured bovine granulosa cells stimulated with or without 10 ng/mL human recombinant TGF-β1...
April 14, 2018: Gene
https://www.readbyqxmd.com/read/29664792/added-value-today-of-hormonal-measurements-in-ovarian-stimulation-in-gonadotropin-releasing-hormone-antagonist-treatment-cycle
#4
Biljana Popovic-Todorovic, Annalisa Racca, Christophe Blockeel
PURPOSE OF REVIEW: Traditional approach of ovarian stimulation monitoring for in-vitro fertilization involves transvaginal sonography and serum estradiol measurements. Accumulating evidence has shown that hormonal evaluations during ovarian stimulation allow individual cycle optimization, moving away from only predicting the risk of ovarian hyperstimulation syndrome, but in addition assessing the impact of ovarian stimulation on endometrial receptivity, quality of oocytes, and subsequently embryos...
April 16, 2018: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29664791/embryo-morphokinetic-characteristics-and-euploidy
#5
Francesca Pennetta, Cristina Lagalla, Andrea Borini
PURPOSE OF REVIEW: The purpose of the current review is to provide an update on time-lapse morphokinetic assessment related to embryo ploidy status. RECENT FINDINGS: The main limitation of the available studies regarding correlation between morphokinetic variables and ploidy is that each embryo is considered as an independent unit whereas recent findings show that embryo kinetics may be affected by patient and ovarian stimulation-related factors, so that clustered data analysis is more appropriate...
April 16, 2018: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29664789/what-is-new-in-the-management-of-poor-ovarian-response-in-ivf
#6
Alberto Vaiarelli, Danilo Cimadomo, Nicolò Ubaldi, Laura Rienzi, Filippo Maria Ubaldi
PURPOSE OF REVIEW: The management and treatment of patients with poor ovarian response is still a controversial issue in IVF. Increasing evidences demonstrate that the number of oocytes retrieved after a controlled ovarian stimulation (COS) greatly influences the clinical outcome in terms of cumulative live birth per started cycle. For this reason, any COS should aim to optimize the number of oocytes according to the ovarian reserve of the patient. The aim of this review is to provide an overview of new strategies proposed to manage poor responders according to the novel POSEIDON classification...
April 16, 2018: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29662964/comparison-of-the-effects-of-ginger-extract-with-clomiphene-citrate-on-sex-hormones-in-rats-with-polycystic-ovarian-syndrome
#7
Shekoufeh Atashpour, Hossein Kargar Jahromi, Zahra Kargar Jahromi, Mozhgan Maleknasab
Background: Polycystic ovarian syndrome (PCOS) is the most common endocrine disorder in women which affect fertility. Clomiphene citrate is used as first-line treatment for this disorder, which is associated with some complications and therapeutic resistance. Objective: In this research, we compare the effectiveness of ginger with clomiphene on sexual hormones such as Luteinizing hormone (LH), Follicle-stimulating hormone (FSH), estrogen and progesterone in order to treat PCOS effectively with fewer side effects...
September 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/29662715/the-effect-of-the-pooling-method-on-the-live-birth-rate-in-poor-ovarian-responders-according-to-the-bologna-criteria
#8
Serdar Çelik, Niyazi Emre Turgut, Dilek Cengiz Çelik, Kübra Boynukalın, Remzi Abalı, Sevim Purisa, Erbil Yağmur, Mustafa Bahçeci
Objective: Pooling is an alternative method to achieve in vitro fertilization outcomes. This study was to investigate the effect of pooling method on pregnancy outcomes in poor responder patients according to Bologna criteria. Materials and Methods: Two hundred-fifty five poor responder patients were enrolled in this study. Pooling embryo transfer (ET) group had 110 and fresh ET group had 145 patients. Results: Although, age was similar between both treatment groups (p=0...
March 2018: Turkish Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29662190/autocrine-activation-of-jak2-by-il-11-promotes-platinum-drug-resistance
#9
Wei Zhou, Wei Sun, Mingo M H Yung, Sheng Dai, Yihua Cai, Chi-Wei Chen, Yunxiao Meng, Jennifer B Lee, John C Braisted, Yinghua Xu, Noel T Southall, Paul Shinn, Xuefeng Huang, Zhangfa Song, Xiulei Chen, Yan Kai, Xin Cai, Zongzhu Li, Qiang Hao, Annie N Y Cheung, Hextan Y S Ngan, Stephanie S Liu, Stephanie Barak, Jing Hao, Zhijun Dai, Alexandros Tzatsos, Weiqun Peng, Huadong Pei, Zhiyong Han, David W Chan, Wei Zheng, Wenge Zhu
Antineoplastic platinum agents are used in first-line treatment of ovarian cancer, but treatment failure frequently results from platinum drug resistance. Emerging observations suggest a role of reactive oxygen species (ROS) in the resistance of cancer drugs including platinum drugs. However, the molecular link between ROS and cellular survival pathway is poorly understood. Using quantitative high-throughput combinational screen (qHTCS) and genomic sequencing, we show that in platinum-resistant ovarian cancer elevated ROS levels sustain high level of IL-11 by stimulating FRA1-mediated IL-11 expression and increased IL-11 causes resistance to platinum drugs by constitutively activating JAK2-STAT5 via an autocrine mechanism...
April 17, 2018: Oncogene
https://www.readbyqxmd.com/read/29661043/risks-and-consequences-of-travel-burden-on-prophylactic-granulocyte-colony-stimulating-factor-administration-and-incidence-of-febrile-neutropenia-in-an-aged-medicare-population
#10
J Mark Stephens, Mark Bensink, Charles Bowers, Christopher S Hollenbeak
OBJECTIVE: Granulocyte colony-stimulating factors (G-CSFs) decrease the incidence of febrile neutropenia (FN) in patients receiving myelosuppressive chemotherapy. In this study, we examined the impact patient travel burden has on administration of prophylactic G-CSFs and the subsequent impact on FN incidence. METHODS: Medicare claims data were used to identify a cohort of beneficiaries age 65+ with non-myeloid cancers at high risk for FN between January 2012 and December 2014...
April 17, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29660008/exosomal-mir-214-from-endometrial-stromal-cells-inhibits-endometriosis-fibrosis
#11
Di Wu, Pan Lu, Xue Mi, Jinwei Miao
STUDY QUESTION: Is it possible to improve fibrosis in endometriosis by microRNA-214 delivery in exosomes? SUMMARY ANSWER: Upregulation of miR-214 may inhibit fibrogenesis and its delivery by exosomes derived from ectopic endometrial stromal cells, offers an alternative therapeutic approach for endometriosis fibrosis. WHAT IS KNOWN ALREADY: Fibrosis is the primary pathological feature of endometriosis. MiR-214 plays an important role in fibrotic disease...
April 11, 2018: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29659826/association-between-ambient-air-pollution-and-pregnancy-rate-in-women-who-underwent-ivf
#12
S A Choe, Y B Jun, W S Lee, T K Yoon, S Y Kim
STUDY QUESTION: Are the concentrations of five criteria air pollutants associated with probabilities of biochemical pregnancy loss and intrauterine pregnancy in women? SUMMARY ANSWER: Increased concentrations of ambient particulate matter (PM10), nitrogen dioxide (NO2), carbon monoxide (CO) during controlled ovarian stimulation (COS) and after embryo transfer were associated with a decreased probability of intrauterine pregnancy. WHAT IS KNOWN ALREADY: Exposure to high ambient air pollution was suggested to be associated with low fertility and high early pregnancy loss in women...
April 5, 2018: Human Reproduction
https://www.readbyqxmd.com/read/29659700/sex-steroids-drive-the-remodeling-of-oviductal-extracellular-matrix-in-cattle
#13
Angela Maria Gonella-Diaza, Fernando Silveira Mesquita, Everton Lopes, Kauê Ribeiro da Silva, Bruno Cogliati, Ricardo De Francisco Strefezzi, Mario Binelli
The extracellular matrix (ECM) is a group of molecules that offer structural and biochemical support to cells and interact with them to regulate their function. Also, growth factors (GFs) stored in the ECM can be locally released during the ECM remodeling process. Here, we hypothesize that the balance between ECM components and remodelers is regulated according to the ovarian steroid milieu to which the oviduct is exposed during the periovulatory period. Follicular growth was manipulated to generate cows that ovulated small follicles (SF-SCL; n = 20) or large follicles (LF-LCL; n = 21) and possess corresponding Estradiol (E2) and Progesterone (P4) plasmatic concentrations...
April 5, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29656043/pituitary-estrogen-receptor-alpha-is-involved-in-luteinizing-hormone-pulsatility-at-mid-gestation-in-the-south-american-plains-vizcacha-lagostomus-maximus-rodentia-caviomorpha
#14
Sofía Proietto, Lorena Yankelevich, Federico Martín Villarreal, Pablo Ignacio Felipe Inserra, Santiago Elías Charif, Alejandro Raúl Schmidt, Santiago Andrés Cortasa, María Clara Corso, Noelia Paula Di Giorgio, Victoria Lux-Lantos, Alfredo Daniel Vitullo, Julia Halperin, Verónica Berta Dorfman
The South American plains vizcacha, Lagostomus maximus, is a caviomorph rodent native from Argentina, Bolivia and Paraguay. It shows peculiar reproductive features like pre-ovulatory follicle recruitment during pregnancy with an ovulatory process at around mid-gestation. We have described the activation of the hypothalamic - pituitary - ovarian (HPO) axis during pregnancy. A progressive decrease of progesterone (P4) at mid-pregnancy elicits the delivery of gonadotropin-releasing hormone (GnRH) with the consequent secretion of follicle stimulating hormone (FSH) and estradiol (E2 ) followed by luteinizing hormone (LH) release resulting in follicular luteinization and the P4 concentration recover...
April 12, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29655999/ovarian-hyperstimulation-syndrome-leading-to-ventriculoperitoneal-shunt-malfunction-case-report
#15
Amit Azriel, Benjamin Fleming, Uri P Dior, Samuel Moscovici, Yuval Sufaro, Mohammed Awad, Kate Drummond
Ventriculoperitoneal shunt (VPS) insertion is a common neurosurgical procedure for hydrocephalus. Unfortunately, VPS malfunction is not uncommon, with an estimated cumulative rate of 32% at 5 years. As flow through the shunt is influenced by the pressure gradient between the ventricles and the peritoneal cavity, malfunction may be caused by elevated intra-abdominal pressure. We present a rare patient with ascites following ovarian hyperstimulation syndrome (OHSS) leading to shunt malfunction. OHSS is a potentially life-threatening complication of controlled ovarian stimulation caused by the administration of exogenous gonadotropins...
April 11, 2018: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/29655815/evidence-for-retinoic-acid-involvement-in-the-regulation-of-vitellogenesis-in-the-fresh-water-edible-crab-oziotelphusa-senex-senex
#16
B P Girish, C H Swetha, M Srilatha, M Hemalatha, P Sreenivasula Reddy
The possible involvement of 13-cis retinoic acid (CRA) in the regulation of ovarian development in Oziotelphusa senex senex was investigated. Injection of CRA, into avitellogenic crabs significantly increased ovarian index, oocyte diameter and ovarian vitellogenin levels. Injection of CRA also resulted in a significant increase in the secretory rates of mandibular organs and Y-organs and circulatory levels of the methyl farnesoate and ecdysteroids. Further, administration of CRA into avitellogenic crabs produced higher amounts of Retinoid X Receptor, Ecdysteroid Receptor, E75 and vitellogenin mRNAs in the hepatopancreas...
April 12, 2018: Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology
https://www.readbyqxmd.com/read/29652213/ovarian-reserve-in-young-juvenile-idiopathic-arthritis-patients
#17
Gabriela R V Ferreira, Renato B Tomioka, Nadia E Aikawa, Elaine P Leon, Gustavo A R Maciel, Paulo C Serafini, Edmund C Baracat, Claudia Goldenstein-Schainberg, Rosa M R Pereira, Eloisa Bonfá, Clovis A Silva
OBJECTIVES: Juvenile idiopathic arthritis (JIA) occurs during reproductive age, however, there are not systematic data regarding ovarian function in this disease. METHODS: Twenty-eight post-pubertal JIA patients and age-matched 28 healthy controls were studied. Complete ovarian function was assessed during the early follicular phase of the menstrual cycle including anti-Müllerian hormone (AMH), estradiol, luteinizing hormone (LH), follicle stimulating hormone (FSH) and antral follicle count (AFC) by ovarian ultrasound, and anti-corpus lutheum antibodies (anti-CoL)...
April 13, 2018: Modern Rheumatology
https://www.readbyqxmd.com/read/29650233/bisphenol-a-exposure-and-risk-of-idiopathic-central-precocious-puberty-among-school-aged-girls-in-shanghai-china
#18
Yao Chen, Yingcan Wang, Guodong Ding, Ying Tian, Zhijun Zhou, Xiumin Wang, Lixiao Shen, Hong Huang
BACKGROUND: Bisphenol A (BPA) is a well-known and widely used endocrine disrupter, but data on its effects on childhood reproductive development are limited. OBJECTIVES: We investigated the possible relationship between exposure to BPA and idiopathic central precocious puberty (ICPP) in school-aged girls. METHODS: We conducted a 1:1 matched case-control study in Shanghai, China, between July 2011 and September 2012. This study included 136 school-aged (6 to 9 years old) girls diagnosed with ICPP and 136 controls matched for age and body mass index (BMI)...
April 9, 2018: Environment International
https://www.readbyqxmd.com/read/29648638/ovulatory-induction-of-scg2-in-human-non-human-primate-and-rodent-granulosa-cells-stimulates-ovarian-angiogenesis
#19
Patrick R Hannon, Diane M Duffy, Katherine L Rosewell, Mats Brännström, James W Akin, Thomas E Curry
The luteinizing hormone (LH) surge is essential for ovulation, but the intrafollicular factors induced by LH that mediate ovulatory processes (e.g. angiogenesis) are poorly understood, especially in women. The role of secretogranin II (SCG2) and its cleaved bioactive peptide, secretoneurin (SN), were investigated as potential novel mediators of ovulation by testing the hypothesis that SCG2/SN is induced in granulosa cells by human chorionic gonadotropin (hCG), via a downstream LH receptor signaling mechanism, and stimulates ovarian angiogenesis...
April 10, 2018: Endocrinology
https://www.readbyqxmd.com/read/29644764/effect-of-simultaneously-started-clomiphene-citrate-and-gonadotropins-in-antagonist-regimes-on-cumulative-live-births-fresh-cycle-live-births-and-cost-of-stimulation-in-ivf-cycles
#20
Ruma Satwik, Mohinder Kochhar
AIM: The aim of the study was to compare simultaneously started clomiphene citrate (CC) and gonadotropins (Gn) with gonadotropins alone in conventional antagonist regimes with respect to fresh-cycle live births, cumulative live births and cost of ovarian stimulation per started cycle. METHODS: This was a single-center prospective cohort study conducted over 1 year. Women undergoing autologous in vitro fertilization (IVF) treatment in antagonist protocols and who consented to participate in the study were divided into two cohorts...
April 11, 2018: Journal of Obstetrics and Gynaecology Research
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