keyword
MENU ▼
Read by QxMD icon Read
search

Ovulation

keyword
https://www.readbyqxmd.com/read/29457758/appraising-cervical-mucus-a-new-approach-to-evaluating-contraceptives
#1
Leo Han, Emily Padua, Alison Edelman, Jeffrey T Jensen
PURPOSE: Timing of sample collection represents a major source of variability in studies evaluating the effects of administered agents on cervical mucus in naturally-cycling women. We sought to create and validate an artificial model of the cervical mucus cycle using exogenous E2 and P4 replacement in ovarian suppressed women. MATERIALS AND METHODS: We conducted a prospective experiment (clinicaltrials.gov, NCT02969590) examining cervical mucus changes in six women during natural and artificial menstrual cycles [leuprolide acetate, estradiol transdermal patch (0...
February 19, 2018: European Journal of Contraception & Reproductive Health Care
https://www.readbyqxmd.com/read/29456564/role-of-granulocyte-colony-stimulating-factor-in-human-reproduction
#2
REVIEW
Maryam Eftekhar, Elham Naghshineh, Parisa Khani
As new research reveals, granulocyte colony-stimulating factor (G-CSF) plays an effective role in pregnancy success, considering that it not only affects the embryo implantation and ovarian function but also it promotes endometrial thickening and improves the pathophysiology of endometriosis, which all fundamentally lead to reducing pregnancy loss. In this review, we focus on the role of G-CSF in human reproduction. We summarized its role in ovulation, luteinized unruptured follicle syndrome, poor responders, improving repeated in vitro fertilization failure, endometrial receptivity and treatment of thin endometrium, and recurrent spontaneous abortion...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29456560/the-effect-of-testosterone-gel-on-fertility-outcomes-in-women-with-a-poor-response-in-in-vitro-fertilization-cycles-a-pilot-randomized-clinical-trial
#3
Nasrin Saharkhiz, Shahrzad Zademodares, Saghar Salehpour, Sedighe Hosseini, Leyla Nazari, Hatav Ghasemi Tehrani
Background: In this study, the effect of testosterone gel administration during ovulation induction on the fertility rate was examined in women with a poor ovarian response in in vitro fertilization (IVF) cycles. Materials and Methods: The current study is a single-blinded, randomized clinical trial. Patients who met inclusion (Bologna) criteria were placed in the antagonist cycle group. The patients were randomly divided into two groups each included 25 participants treated with a placebo (lubricant gel, the controls) and testosterone gel (intervention)...
2018: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/29456102/the-prognostic-capacity-of-transvaginal-hydrolaparoscopy-to-predict-non-ivf-conception
#4
Mianne van Kessel, Rachel Tros, Jur Oosterhuis, Walter H Kuchenbecker, Elly M Vernooij, Marlies Y Bongers, Ben Willem J Mol, Carolien A Koks
Transvaginal hydrolaparoscopy (THL) is performed to investigate tubal pathology in subfertile women. This retrospective multicentre cohort study investigated the results of THL and subsequent pregnancy rates. Between 2000 and 2011, 1033 subfertile women participated in the study. The primary outcome measure was intrauterine pregnancy, either after natural conception or after treatment with intrauterine insemination or ovulation induction. Cumulative intrauterine pregnancy rates were calculated using Kaplan-Meier analysis and fecundity rate ratios (FRR) were established...
February 5, 2018: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29454804/physiological-predictors-of-leptin-vary-during-menses-and-ovulation-in-healthy-women
#5
Kristyn E Sylvia, Tierney K Lorenz, Julia R Heiman, Gregory E Demas
Although research has shown interactions between the reproductive system and energy homeostasis, it is not clear how environmental or behavioral factors may factor into these associations. Here we aimed to determine how changes in reproductive state (i.e., phase of the menstrual cycle) and other behavioral and physiological factors may influence leptin levels in healthy women, as well as how sexual activity may play a role in leptin modulation. We collected serum and saliva from 32 healthy women and measured leptin, estradiol, and progesterone...
February 14, 2018: Reproductive Biology
https://www.readbyqxmd.com/read/29454296/effect-of-multiple-low-dose-pgf-2-%C3%AE-injections-on-the-mature-corpus-luteum-in-non-pregnant-bitches
#6
Eyyup H Ucar, Hayrettin Cetin, Mehmet O Atli
This study investigated molecular regulation in the canine corpus luteums/corpora lutea (CL) following multiple low-dose prostaglandin F 2 alpha (PGF 2 α) injections in non-pregnant bitches around 30-35 days after ovulation. The CL were obtained by ovariohysterectomy 1 h after the last PGF 2 α injection. The subjects were divided into the following groups: control (no PGF 2 α injection, n = 4), one PGF 2 α injection (injection at 0 h, 1PGF, n = 4), two PGF 2 α injection (injection at 0 and 8 h, 2PGF, n = 4), and three PGF 2 α injection (injection at 0, 8 and 24 h, 3PGF, n = 4)...
February 14, 2018: Theriogenology
https://www.readbyqxmd.com/read/29453138/increased-coagulation-index-as-measured-by-thromboelastography-during-ovarian-stimulation-for-in-vitro-fertilization-influence-of-the-final-oocyte-maturation-triggering-agent
#7
Ronit Beck-Fruchter, Israel Gavish, Shira Baram, Yoel Geslevich, Amir Weiss
OBJECTIVE: Thromboelastography (TEG) is a viscoelastic test of hemostasis which allows measurement of the processes of clot initiation, propagation, stabilization, and dissolution in real time. In this study we aimed to evaluate the alterations in coagulation as measured by TEG during In Vitro Fertilization (IVF) stimulation cycles and to investigate whether final oocyte maturation with recombinant hCG (rhCG) versus GnRH agonist results in a different coagulation state. STUDY DESIGN: This is a prospective observational study which included fifty-three normogonadotrophic women...
February 10, 2018: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29453074/use-of-prostaglandin-f2%C3%AE-as-ovulatory-stimulus-for-synchronizing-dairy-cattle
#8
N A Castro, P M A Neves, J P Cestaro, V T O Melo, A Schneider, L F M Pfeifer
The aim of this study was to evaluate if prostaglandin F2α (PGF) can be used to induce ovulation in a GnRH-progesterone based protocol. In Experiment 1 crossbred dairy cows (n=32) were synchronized with a progesterone-GnRH based protocol for seven days, where the luteolytic dose of 150μg PGF was given 24h prior progesterone device removal (CIDR). On Day 8 cows were separated into two groups to receive: 1) 2mL of Saline (Control Group, n=15) or 2) 150μg of PGF (PGF Group, n=17). Ovulation rate was higher in the PGF than Control group (100% vs 53...
January 31, 2018: Research in Veterinary Science
https://www.readbyqxmd.com/read/29450960/effect-of-flower-orientation-on-the-male-and-female-traits-of-myrtillocactus-geometrizans-cactaceae
#9
Sandra A Aguilar-García, Dulce M Figueroa-Castro, Pedro L Valverde, F Vite
1.Intra-individual variation in the production and size of reproductive traits has been documented in columnar cacti, being higher in Equator-facing flowers. Such variation is attributed to the high amount of photosynthetic active radiation intercepted by stems oriented towards the Equator. Most studies focused on this phenomenon have documented the existence of intra-individual variation on traits associated with the female function; however, its impact on traits associated with the male function has been neglected...
February 16, 2018: Plant Biology
https://www.readbyqxmd.com/read/29449038/one-year-daily-changes-in-fecal-sexual-steroids-of-two-captive-female-cheetahs-acinonyx-jubatus-in-italy
#10
Valentina Vernocchi, Maria Giorgia Morselli, Massimo Faustini, Gianfranco Gabai, Laura Da Dalt, Gaia Cecilia Luvoni
The present study evaluated changes of fecal sexual steroids in two female cheetahs (Geijsha and Duchessa) in Northern Italy throughout one year. Wet feces were collected daily from two sibling animals of the same age, housed with conspecific males and managed in the same conditions, and estrogens and progestogens concentrations were analyzed by radioimmunoassay (RIA). Evidence of ovarian activity based on regular fluctuation in estrogen excretion was demonstrated in both females. None of the animals was continuously cycling, as follicular activity was interrupted by anestrous periods, during the spring and early winter...
February 2, 2018: Animal Reproduction Science
https://www.readbyqxmd.com/read/29446744/delivery-of-peptidic-gonadotropin-releasing-hormone-antagonists
#11
Rawda Yaseen AlSheyyab, Bashar Mohammad Al-Taani, Rana Mohammad Obeidat, Motasem Mohammad Alsmadi, Rafeef Khalid Masaedeh, Raghda Nasry Sabat
GnRH antagonists have several clinical applications in prostate cancer, regulation of ovulation induction in females, breast cancer, male contraception and others. Antagonists differ from natural GnRH decapeptide in having five or more amino acid substitutions. Whereas most of antagonists are available as subcutaneous (SC) formula for injection, some are formulated as a depot formulation for sustained release (e.g. Cetrarelix, Degarelix). Systemic delivery of cetrorelix acetate by intratracheal route can be achieved using dry powder for inhalation of adhesive mixture when the powder deposition reaches stage four...
February 14, 2018: Current Drug Delivery
https://www.readbyqxmd.com/read/29445069/expression-and-distribution-of-the-zinc-finger-protein-snai3-in-mouse-ovaries-and-pre-implantation-embryos
#12
Shujuan Guo, Xing-Yu Yan, Feifei Shi, Ke Ma, Zi-Jiang Chen, Cong Zhang
The Snail gene family includes Snai1, Snai2, and Snai3 that encode zinc finger-containing transcriptional repressors in mammals. The expression and localization of SNAI1 and SNAI2 have been studied extensively during folliculogenesis, ovulation, luteinization, and embryogenesis in mice. However, the role of SNAI3 is unknown. In this study, we investigated the expression of SNAI3 during these processes. Our immunohistochemistry data showed that SNAI3 first appeared in oocytes by postnatal day (PD) 9. Following this, SNAI3 was found to be expressed consistently in theca and interstitial cells, along with oocytes...
February 15, 2018: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/29441420/multilayered-signaling-pathways-for-pollen-tube-growth-and-guidance
#13
REVIEW
Hong-Ju Li, Jiang-Guo Meng, Wei-Cai Yang
Sexual reproductive success is essential for the survival of all higher organisms. As the most prosperous and diverse group of land plants on earth, flowering plants evolved highly sophisticated fertilization mechanisms. To adapt to the terrestrial environment, a tubular structure pollen tube has been evolved to deliver the immobile sperm cells to the egg and central cell enclosed within the ovule. The pollen tube is generated from the vegetative cell of the pollen (male gametophyte), where two sperm cells are hosted...
February 13, 2018: Plant Reproduction
https://www.readbyqxmd.com/read/29438675/involvement-of-matrix-metalloproteinases-mmp-2-7-9-and-their-tissue-inhibitors-timp-2-3-in-the-regression-of-chicken-postovulatory-follicles
#14
Anna Hrabia, Joanna K Socha, Andrzej Sechman
The study was undertaken to examine mRNA expression and localization of selected matrix metalloproteinases (MMPs) and their tissue inhibitors (TIMPs), and the activity of MMPs in chicken postovulatory follicles (POFs) during their apoptotic regression. Apoptotic cells and apoptosis-related caspase expression and activity were examined as well. Chickens were sacrificed 2 h and 21 h after ovulation, and five POFs (POF1 to POF5) were isolated from the ovaries. It was found that the number of apoptotic cells (TUNEL-positive) increased along with follicle regression...
February 10, 2018: General and Comparative Endocrinology
https://www.readbyqxmd.com/read/29438491/new-insights-on-a-ngf-mediated-pathway-to-induce-ovulation-in-rabbits-oryctolagus-cuniculus
#15
Margherita Maranesi, Linda Petrucci, Leonardo Leonardi, Federica Piro, Pilar García Rebollar, Pilar Millán, Paolo Cocci, Cecilia Vullo, Francesco Parillo, Arlindo Moura, Gabriela Gonzalez Mariscal, Cristiano Boiti, Massimo Zerani
To investigate the ovulatory mechanisms triggered by raw semen in rabbits, we examined the expression of nerve growth factor (NGF)-a supposed ovulation-inducing factor (OIF)-and cognate receptors in anterior pituitary, ovary, and cervix as well as plasma NGF and LH concentrations. Six does/group were: sham-inseminated with sterile saline (PBS), naturally mated (NM), inseminated with raw semen alone (RS) or after lumbar anesthesia (ARS) or treatment with COX inhibitors (CIRS). Immunohistochemistry revealed positive signals for NGF and receptors in all tissues...
February 9, 2018: Biology of Reproduction
https://www.readbyqxmd.com/read/29430170/analytical-characterization-of-recombinant-hcg-and-comparative-studies-with-reference-product
#16
Rajamannar Thennati, Sanjay Kumar Singh, Nitin Nage, Yena Patel, Sandip Kumar Bose, Vinod Burade, Ranjit Sudhakar Ranbhor
Introduction: Regulatory agencies recommend a stepwise approach for demonstrating biosimilarity between a proposed biosimilar and reference biological product emphasizing for functional and structural characterization to trace if there is any difference which may impact safety and efficacy. We studied the comparative structural and biological attributes of recombinant human chorionic gonadotropin (rhCG), SB005, with reference product, Ovidrel ® and Ovitrelle ® . Recombiant hCG was approved in 2000 by the US Food and Drug Administration for the induction of final follicular maturation, early luteinization in infertile women as part of assisted reproductive technology program...
2018: Biologics: Targets & Therapy
https://www.readbyqxmd.com/read/29430153/the-impact-of-progesterone-level-on-day-of-hcg-injection-in-ivf-cycles-on-clinical-pregnancy-rate
#17
Jawa Ashmita, Swarankar Vikas, Garg Swati
Background: Premature progesterone rise (PPR) has long been implicated as contributing to implantation failure. Despite the use of gonadotropin-releasing hormone (GnRH) analogues, subtle increases in serum progesterone ( P 4 ) levels beyond a threshold progesterone concentration were observed on the day of trigger in controlled ovarian hyperstimulation cycles. Aims: The purpose of the study was to evaluate the incidence of PPR on the day of trigger in conventional IVF/ICSI cycles and its impact on clinical pregnancy rate...
October 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29430152/ovulation-induction-using-clomiphene-citrate-using-stair-step-regimen-versus-traditional-regimen-in-polycystic-ovary-syndrome-women-a-randomized-control-trial
#18
K Agrawal, Shalini Gainder, Lakhbir K Dhaliwal, Vanita Suri
Objective: To determine the efficacy of the stair-step protocol (SSP) using clomiphene citrate (CC) in patients with polycystic ovary syndrome (PCOS) and compare it with traditional regimen. Design: This was randomized control trial. Setting: Infertility Clinic. Patients: Sixty infertile PCOS women. Interventions: Patients were randomized into the study (SSP - 30 patients) and control group (traditional protocol - 30 patients)...
October 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29428848/molecular-and-endocrine-factors-involved-in-future-dominant-follicle-dynamics-during-the-induction-of-luteolysis-in-bos-indicus-cows
#19
I Y H Martinez, A P C Santos, M P Bottino, R E Orlandi, G Santos, L M S Simões, J C Souza, A M G Díaza, M Binelli, J N S Sales
The growth profiles of the future dominant follicle (DF) and subordinate follicle (SF) and the gene expression of the granulosa cells during luteolysis induction in Bos indicus cows were evaluated. Forty cows were synchronized with a progesterone and estradiol based protocol. After synchronization, cows with a corpus luteum (CL) were evaluated by ultrasonography every 12 h, beginning at eight days post ovulation. Cows identified with a follicle of at least 6.0 mm in diameter in the second wave were split into two groups (BD-before follicular deviation and AD-after follicular deviation...
February 2, 2018: Theriogenology
https://www.readbyqxmd.com/read/29428845/decreasing-from-9-to-7-days-the-permanence-of-progesterone-inserts-make-possible-their-use-up-to-5-folds-in-suckled-nellore-cows
#20
Marcelo H Santos, Marcos Vinicius C Ferraz Junior, Daniel M Polizel, José Paulo R Barroso, Alexandre A Miszura, André S Martins, Analisa V Bertoloni, Gabriela B Oliveira, Alexandre V Pires
This study aimed to evaluate the effects of decreasing permanence period of progesterone (P4) inserts from 9 (9d) to 7 (7d) days in timed-AI (TAI) protocol, as well as their reuse on pregnancy per AI (P/AI) during 7d protocol. At the beginning of all protocols, cows received 2 mg of estradiol benzoate (EB) and a vaginal insert containing 1.9 g of P4. In the 7d protocol, the P4 insert was removed, and cows were given 25 mg of prostaglandin F2α, 0.6 mg of estradiol cypionate and 300 IU of eCG 7 days later...
January 31, 2018: Theriogenology
keyword
keyword
44213
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"