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https://www.readbyqxmd.com/read/29215516/clomiphene-stair-step-protocol-for-women-with-polycystic-ovary-syndrome
#1
Tiffanny Jones, Jacqueline R Ho, Marc Gualtieri, Janet Bruno-Gaston, Karine Chung, Richard J Paulson, Kristin A Bendikson
OBJECTIVE: To compare time to ovulation, ovulation rates, and side effect profile of traditional and the stair-step protocol for ovulation induction using clomiphene citrate in women with polycystic ovary syndrome (PCOS). METHODS: We performed a retrospective study of women seeking care for infertility with a diagnosis of PCOS at a university-based infertility clinic from July 2012 to July 2014. We included patients who were resistant to the initial starting dose of 50 mg clomiphene...
December 4, 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29214348/effect-of-laser-assisted-zona-thinning-during-assisted-reproduction-on-pregnancy-outcome-in-women-with-endometriosis-randomized-controlled-trial
#2
Adel Mohamed Nada, Amr El-Noury, Hesham Al-Inany, Mamdouh Bibars, Tamer Taha, Sameh Salama, Fatma Hassan, Eman Zein
OBJECTIVE: To compare the ICSI-ET outcomes in patients with endometriosis with or without laser-assisted zona pellucida thinning. DESIGN: Randomized controlled trial. SETTING: The study was conducted in the Obstetrics & Gynecology Department, Cairo University hospital, and two private IVF centers in Cairo & Beni-Suif from July 2015 to January 2017 upon infertile and known endometriosis patients who planned to do ICSI-ET. INTERVENTIONS: Before randomization, all patients received the same ovarian stimulation preparation, oocyte retrieval procedures, and the same intracytoplasmic sperm injection procedures...
December 6, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29212724/major-histocompatibility-complex-linked-social-signalling-affects-female-fertility
#3
D Burger, S Thomas, H Aepli, M Dreyer, G Fabre, E Marti, H Sieme, M R Robinson, C Wedekind
Genes of the major histocompatibility complex (MHC) have been shown to influence social signalling and mate preferences in many species, including humans. First observations suggest that MHC signalling may also affect female fertility. To test this hypothesis, we exposed 191 female horses (Equus caballus) to either an MHC-similar or an MHC-dissimilar stimulus male around the time of ovulation and conception. A within-subject experimental design controlled for non-MHC-linked male characteristics, and instrumental insemination with semen of other males (n = 106) controlled for potential confounding effects of semen or embryo characteristics...
December 6, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/29207251/oral-contraceptives-modulate-the-muscle-metaboreflex-in-healthy-young-women
#4
Hanna R Parmar, Jasmin Sears, Yannick Molgat-Seon, Cara L McCulloch, Laura A McCracken, Courtney V Brown, Andrew William Sheel, Paolo B Dominelli
There are known sex-differences in blood pressure regulation. The differences are related to ovarian hormones that influence β-adrenergic receptors and the transduction of muscle sympathetic nerve activity. Oral contraceptives (OC) modulate the ovarian hormonal profile in women and therefore may alter the cardiovascular response. We questioned if OC would alter the absolute pressor response to static exercise and influence the day-to-day variability of the response. Healthy men (n=11) and women (n=19) completed a familiarization day and two experimental testing days...
December 5, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29204869/estrogen-treatment-in-infertile-women-with-premature-ovarian-insufficiency-in-transitional-phase-a-retrospective-analysis
#5
Sara Pinelli, Paolo Giovanni Artini, Stefano Basile, Maria Elena Rosa Obino, Claudia Sergiampietri, Diana Giannarelli, Giovanna Simi, Vito Cela
PURPOSE: During the transitional phase of premature ovarian insufficiency (POI), sporadic resumption of ovulation is possible because of fluctuation of hormonal levels but the chance of spontaneous pregnancy is low, and the main perspective of childbearing in these women is egg donation or adoption. The purpose of the study was to verify whether treatment with estrogens in POI patients in transitional phase could reduce FSH levels and to evaluate if this pre-treatment could improve reproductive outcomes of in vitro fertilization (IVF)...
December 5, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29203384/do-endometriomas-grow-during-ovarian-stimulation-for-assisted-reproduction-a-three-dimensional-volume-analysis-before-and-after-ovarian-stimulation
#6
Ayse Seyhan, Bulent Urman, Engin Turkgeldi, Baris Ata
Whether endometriomas grow because of supraphysiological oestradiol levels attained during ovarian stimulation for assisted reproduction techniques is a concern. In this prospective study, 25 women with 28 endometriomas underwent three-dimensional ultrasound using sono-automated volume calculation software. Endometrioma volume was measured on the first day of gonadotrophin injection (V1) and the day of ovulation trigger (V2). Nine (36%) women were stimulated in a gonadotrophin releasing hormone antagonist protocol (GnRH), 13 (52%) in a long, and three (12%) in an ultra-long GnRH agonist protocol...
November 17, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29201668/efficacy-of-intrauterine-injection-of-granulocyte-colony-stimulating-factor-g-csf-on-treatment-of-unexplained-recurrent-miscarriage-a-pilot-rct-study
#7
Simin Zafardoust, Mohammad Mehdi Akhondi, Mohammad Reza Sadeghi, Afsaneh Mohammadzadeh, Atousa Karimi, Sheyda Jouhari, Soheila Ansaripour
Background: Endometrium undergoes several changes in structure and cellular composition during pregnancy. Granulocyte Colony-stimulating Factor (GCS-F) is an important cytokine with critical role in embryo implantation and pregnancy. The aim of the present study was to evaluate the impact of intrauterine injection of G-CSF in patients who suffer from unexplained recurrent miscarriage (RM). Methods: In the present randomized clinical trial, a total of 68 patients were randomly allocated into two study groups including intrauterine G-CSF (n=23, 300 μg) injection and control group (n=27, no G-CSF injection)...
October 2017: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/29201664/vitrification-of-mouse-mii-oocyte-decreases-the-mitochondrial-dna-copy-number-tfam-gene-expression-and-mitochondrial-enzyme-activity
#8
Mahboobeh Amoushahi, Mojdeh Salehnia, Seyed Javad Mowla
Background: The objective of this study was determination of the changes in the reactive oxygen species (ROS) level, mitochondrial DNA (mtDNA) copy number and enzyme activity and transcription factor A (TFAM) gene expression in oocytes after vitrification. Methods: The oocytes at metaphase II (MII) stage (n=320) were collected from super-ovulated adult female mice (n=40). These oocytes were divided into vitrified and non-vitrified groups (n=160 in each group). After vitrification of oocytes, ROS level, mtDNA copy number; TFAM gene expression and mitochondrial enzymes activity (cytochrome C oxidase and succinate dehydrogenase) were assessed and compared with non-vitrified group...
October 2017: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/29200322/selecting-analytical-biomarkers-for-diagnostic-applications-a-first-principles-approach
#9
Samantha A Byrnes, Bernhard H Weigl
Biomarkers are objective indications of a medical state that can be measured accurately and reproducibly. Traditional biomarkers enable diagnosis of disease through detection of disease-specific molecules, disease-mediated molecular changes, or distinct physiological or anatomical signatures. Areas covered: This work provides a framework for selecting biomarkers that are most likely to provide useful information about a patient's disease state. Though the authors emphasize markers related to disease, this work is also applicable to biomarkers for monitoring physiological changes such as ovulation or pregnancy...
December 4, 2017: Expert Review of Molecular Diagnostics
https://www.readbyqxmd.com/read/29199102/effect-of-repeated-adrenocorticotropic-hormone-administration-on-reproductive-function-and-hair-cortisol-concentration-during-the-estrous-cycle-in-goats
#10
Natsumi Endo, Hiroaki Yamane, Larasati Puji Rahayu, Tomomi Tanaka
Measurement of the cortisol concentration in hair has been used as an index of chronic stress in several species including humans, wildlife and domestic animals. However, how accurately the cortisol concentration in hair reflects the changes in circulating cortisol concentrations has not been well documented. The objective of the present study was to examine the effect of repeated adrenocorticotropic hormone (ACTH) administration on the reproductive function during the estrous cycle and hair cortisol concentrations in goats...
November 30, 2017: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29197096/observations-on-the-origin-of-ovarian-cortical-inclusion-cysts-in-women-undergoing-risk-reducing-salpingo-oophorectomy
#11
Kay J Park, Prusha Patel, Irina Linkov, Anjali Jotwani, Noah Kauff, Malcolm C Pike
AIMS: Evidence suggests that up to 70% of high-grade serous ovarian carcinomas (HGSCs) potentially arise from fallopian tube fimbriae, and that many of the remaining cases arise from within the ovary in cortical inclusion cysts (CICs) with a Müllerian phenotype (Müllerian-CICs). It has been proposed that Müllerian-CICs arise either from metaplasia of mesothelial ovarian surface epithelium (OSE) entrapped within the ovary after ovulation, or from normal tubal cells entrapped post-ovulation...
December 2, 2017: Histopathology
https://www.readbyqxmd.com/read/29196300/mettl3-mutation-disrupts-gamete-maturation-and-reduces-fertility-in-zebrafish
#12
Hui Xia, Chengrong Zhong, Xingxing Wu, Ji Chen, Binbin Tao, Xiaoqin Xia, Mijuan Shi, Zuoyan Zhu, Vance L Trudeau, Wei Hu
N6-methyladenosine (m6A), catalyzed by Mettl3 methyltransferase, is a highly conserved epigenetic modification in eukaryotic mRNA. Previous studies have implicated m6A modification in multiple biological processes, but the in vivo function of m6A has been difficult to study, because mettl3 mutants are embryonic lethal in both mammals and plants. In this study, we have used transcription activator-like effector nucleases and generated viable zygotic mettl3 mutant, Zmettl3m/m , in zebrafish. We find that the oocytes in Zmettl3m/m adult females are stalled in early development and the ratio of full grown stage (FG) follicles is significantly lower than that of wild type...
December 1, 2017: Genetics
https://www.readbyqxmd.com/read/29195840/membrane-estrogen-receptor-signaling-impacts-the-reward-circuitry-of-the-female-brain-to-influence-motivated-behaviors
#13
Katherine R Tonn Eisinger, Erin B Larson, Marissa I Boulware, Mark J Thomas, Paul G Mermelstein
Within the adult female, estrogen signaling is well-described as an integral component of the physiologically significant hypothalamic-pituitary-gonadal axis. In rodents, the timing of ovulation is intrinsically entwined with the display of sexual receptivity. For decades, the importance of estradiol activating intracellular estrogen receptors within the hypothalamus and midbrain/spinal cord lordosis circuits has been appreciated. These signaling pathways primarily account for the ability of the female to reproduce...
November 28, 2017: Steroids
https://www.readbyqxmd.com/read/29188022/induced-spawning-of-siban-fish-cyclocheilichthys-apogon-using-ovaprim
#14
Nuraini Nuraini, Afrizal Tanjung, Trisla Warningsih, Zainal Abidin Muchlisin
Background: The objective of the present study was to examine the effect of Ovaprim dosage on the latency period, relative number of ovulated eggs, fertilization, hatching, and survival rates of the siban fish, Cyclocheilichthys apogon. Methods: Three dosages of Ovaprim were tested in this study, namely 0.3 ml kg-1 of broodfish body weight, 0.5 ml kg-1 body weight, and 0.7 ml kg-1 body weight, plus control (without Ovaprim).  Results: The results showed that the best latency period, relative number of ovulated eggs, fertilization, hatching, and survival rates were obtained at a dosage of 0...
2017: F1000Research
https://www.readbyqxmd.com/read/29187696/accuracy-of-follicle-count-and-ovulation-confirmation-using-magnetic-resonance-imaging-in-microminipigs-with-normal-estrus-cycles
#15
Masaki Takasu, Ryoko Baba, Satsuki Owada, Kotono Nakamura, Julio Almunia, Noriko Nishii, Hitoshi Kitagawa
Magnetic resonance imaging (MRI) is suggested to be useful for counting follicles and confirming ovulation in microminipigs. However, its accuracy is unknown. We have compared the number of follicles counted by MRI to that of corpus hemorrhagicum confirmed directly by visual inspection. The follicles of 17 microminipigs were counted by using ovarian MRI on a 0.4 Tesla MRI System every 24 hours after estrus until follicle images disappeared. Then, we performed laparotomy to count their corpus hemorrhagicum. Significant correlation was observed between follicle counts obtained using MRI (5...
November 28, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/29184563/the-kinase-erulus-controls-pollen-tube-targeting-and-growth-in-arabidopsis-thaliana
#16
Sébastjen Schoenaers, Daria Balcerowicz, Alex Costa, Kris Vissenberg
In this paper, we describe the role of the receptor-like kinase ERULUS (ERU) in PT growth of Arabidopsis thaliana. In silico analysis and transcriptional reporter lines revealed that ERU is only expressed in pollen and root hairs (RHs), making it a tip growth-specific kinase. Deviations from Mendelian inheritance were observed in the offspring of self-pollinated heterozygous eru plants. We found that in vivo eru PT targeting was disturbed, providing a possible explanation for the observed decrease in eru fertilization competitiveness...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/29183107/insulin-sensitising-drugs-metformin-rosiglitazone-pioglitazone-d-chiro-inositol-for-women-with-polycystic-ovary-syndrome-oligo-amenorrhoea-and-subfertility
#17
REVIEW
Lara C Morley, Thomas Tang, Ephia Yasmin, Robert J Norman, Adam H Balen
BACKGROUND: Polycystic ovary syndrome (PCOS) is characterised by infrequent or absent ovulation, and high levels of androgens and insulin (hyperinsulinaemia). Hyperinsulinaemia occurs secondary to insulin resistance and is associated with increased risk of cardiovascular disease and diabetes mellitus. Insulin-sensitising agents such as metformin may be effective in treating PCOS-related anovulation. OBJECTIVES: To evaluate the effectiveness and safety of insulin-sensitising drugs in improving reproductive and metabolic outcomes for women with PCOS undergoing ovulation induction...
November 29, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29182200/-epigenetics-of-polycystic-ovary-syndrome
#18
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
https://www.readbyqxmd.com/read/29181649/cell-cell-communications-and-molecular-mechanisms-in-plant-sexual-reproduction
#19
Masahiro M Kanaoka
Sexual reproduction is achieved by precise interactions between male and female reproductive organs. In plant fertilization, sperm cells are carried to ovules by pollen tubes. Signals from the pistil are involved in elongation and control of the direction of the pollen tube. Genetic, reverse genetic, and cell biological analyses using model plants have identified various factors related to the regulation of pollen tube growth and guidance. In this review, I summarize the mechanisms and molecules controlling pollen tube growth to the ovule, micropylar guidance, reception of the guidance signal in the pollen tube, rupture of the pollen tube to release sperm cells, and cessation of the tube guidance signal...
November 27, 2017: Journal of Plant Research
https://www.readbyqxmd.com/read/29181380/production-preservation-and-transfer-of-south-american-camelid-embryos
#20
REVIEW
Virginia L Trasorras, María Ignacia Carretero, Deborah M Neild, Maria Graciela Chaves, Susana M Giuliano, Marcelo H Miragaya
The current review summarizes progress in the field of in vitro and in vivo production of South American Camelid embryos. Both methods require ovarian superstimulation (with FSH and eCG) to obtain multiple ovulations (in vivo embryo production) or to induce follicle growth for oocyte collection (in vitro embryo production). Moreover, superstimulation entails prior administration of hormones that inhibit follicular growth (progesterone, progestagens, and estrogens). Cumulus-oocyte complexes obtained must mature in vivo (buserelin administration) or in vitro to then be subjected to in vitro fertilization or intracytoplasmic sperm injection...
2017: Frontiers in Veterinary Science
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