keyword
MENU ▼
Read by QxMD icon Read
search

oocyte embryo

keyword
https://www.readbyqxmd.com/read/29154179/the-effect-of-follicullar-fluid-pesticides-and-polychlorinated-biphenyls-concentrations-on-intracytoplasmic-sperm-injection-icsi-embryological-and-clinical-outcome
#1
Tarek K Al-Hussaini, Ahmed A Abdelaleem, Ihab Elnashar, Omar M Shabaan, Rashad Mostafa, Mona A H El-Baz, Sahar E M El-Deek, Tarek A Farghaly
OBJECTIVES: The present study evaluated the correlation between the concentrations of polychlorinated biphenyls (PCBs) and pesticides in the follicular fluid (FF) obtained during intracytoplasmic sperm injection (ICSI) with the ovarian response, endometrial thickness, and embryological and clinical outcomes. DESIGN: Cross-sectional observational study. MATERIALS AND METHODS: Women aged 20 to 38 years (300 infertile couples) presenting to a university-affiliated fertility center were approached to participate in the study...
November 15, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29153526/economic-and-genetic-performance-of-various-combinations-of-in-vitro-produced-embryo-transfers-and-artificial-insemination-in-a-dairy-herd
#2
Karun Kaniyamattam, Jeremy Block, Peter J Hansen, Albert De Vries
The objective of this study was to find the optimal proportions of pregnancies from an in vitro-produced embryo transfer (IVP-ET) system and artificial insemination (AI) so that profitability is maximized over a range of prices for embryos and surplus dairy heifer calves. An existing stochastic, dynamic dairy model with genetic merits of 12 traits was adapted for scenarios where 0 to 100% of the eligible females in the herd were impregnated, in increments of 10%, using IVP-ET (ET0 to ET100, 11 scenarios). Oocytes were collected from the top donors selected for the trait lifetime net merit (NM$) and fertilized with sexed semen to produce IVP embryos...
November 15, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29152085/the-effect-of-human-chorionic-gonadotrophin-contained-in-human-menopausal-gonadotropin-on-the-clinical-outcomes-during-progestin-primed-ovarian-stimulation
#3
Xiuxian Zhu, Jing Ye, Yonglun Fu, Ai Ai, Renfei Cai, Yun Wang, Qingging Hong, Tian Hui, Qifeng Lyu, Qiuju Chen, Yanping Kuang
Progestin-primed ovarian stimulation (PPOS) protocol has recently been demonstrated to be an novel regimen for preventing premature LH surges during controlled ovarian hyperstimulation (COH) in combination with frozen-thawed embryo transfer (FET). Our prospective controlled study was to explore the effect of human chorionic gonadotropin (hCG) contained in human menopausal gonadotropin (hMG) on the clinical outcomes in normalovulatory women undergoing COH with PPOS. A total of 180 patients were allocated into three groups according to the gonadotropin (Gn) used: group A (human menopausal gonadotropin, hMG-A), group B (hMG-B) or group C (follicle stimulating hormone, FSH)...
October 20, 2017: Oncotarget
https://www.readbyqxmd.com/read/29151403/mouse-oocytes-nucleoli-rescue-embryonic-development-of-porcine-enucleolated-oocytes
#4
Martin Morovic, Frantisek Strejcek, Shoma Nakagawa, Rahul S Deshmukh, Matej Murin, Michal Benc, Helena Fulka, Hirohisa Kyogoku, Lazo Pendovski, Josef Fulka, Jozef Laurincik
It is well known that nucleoli of fully grown mammalian oocytes are indispensable for embryonic development. Therefore, the embryos originated from previously enucleolated (ENL) oocytes undergo only one or two cleavages and then their development ceases. In our study the interspecies (mouse/pig) nucleolus transferred embryos (NuTE) were produced and their embryonic development was analyzed by autoradiography, transmission electron microscopy (TEM) and immunofluorescence (C23 and upstream binding factor (UBF))...
November 20, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29149522/melatonin-improves-the-meiotic-maturation-of-porcine-oocytes-by-reducing-endoplasmic-reticulum-stress-during-in-vitro-maturation
#5
Hyo-Jin Park, Jae-Young Park, Jin-Woo Kim, Seul-Gi Yang, Jae-Min Jung, Min-Ji Kim, Man-Jong Kang, Young Ho Cho, Gabbine Wee, Hee-Young Yang, Bong-Seok Song, Sun-Uk Kim, Deog-Bon Koo
Under endoplasmic reticulum (ER)-stress conditions, the unfolded protein response (UPR) generates a defense mechanism in mammalian cells. The regulation of UPR signaling is important in oocyte maturation, embryo development, and female reproduction of pigs. Recent studies have shown that melatonin plays an important role as an anti-oxidant to improve pig oocyte maturation. However, there is no report on the role of melatonin in the regulation of UPR signaling and ER-stress during in vitro maturation (IVM) of porcine oocytes...
November 17, 2017: Journal of Pineal Research
https://www.readbyqxmd.com/read/29149327/focused-time-lapse-analysis-reveals-novel-aspects-of-human-fertilization-and-suggests-new-parameters-of-embryo-viability
#6
G Coticchio, M Mignini Renzini, P V Novara, M Lain, E De Ponti, D Turchi, R Fadini, M Dal Canto
STUDY QUESTION: Can focused application of time-lapse microscopy (TLM) lead to a more detailed map of the morphokinetics of human fertilization, revealing novel or neglected aspects of this process? SUMMARY ANSWER: Intensive harnessing of TLM reveals novel or previously poorly characterised phenomena of fertilization, such as a cytoplasmic wave (CW) preceding pronuclear formation and kinetics of pronuclear chromatin polarization, thereby suggesting novel non-invasive biomarkers of embryo quality...
November 15, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29147461/the-role-of-antioxidant-enzymes-in-the-ovaries
#7
REVIEW
Shan Wang, Guolin He, Meng Chen, Tao Zuo, Wenming Xu, Xinghui Liu
Proper physiological function of the ovaries is very important for the entire female reproductive system and overall health. Reactive oxygen species (ROS) are generated as by-products during ovarian physiological metabolism, and antioxidants are indicated as factors that can maintain the balance between ROS production and clearance. A disturbance in this balance can induce pathological consequences in oocyte maturation, ovulation, fertilization, implantation, and embryo development, which can ultimately influence pregnancy outcomes...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/29145852/a-preliminary-evaluation-of-influence-of-body-mass-index-on-in-vitro-fertilization-outcome-in-non-obese-endometriosis-patients
#8
Eliana Garalejic, Biljana Arsic, Jovana Radakovic, Dragana Bojovic Jovic, Dragana Lekic, Biljana Macanovic, Ivan Soldatovic, Milan Perovic
BACKGROUND/AIMS: Obese and overweight women experience a lower probability for pregnancy after IVF. However, despite the increasing prevalence of obesity, the large majority of infertile women are non-obese. One of the most common indications for IVF is endometriosis. Thought-provoking inverse correlation has been established between BMI and endometriosis. Lower BMI is a risk factor for development of endometriosis and a predictive factor for severe endometriosis. Since severe endometriosis carries lower reproductive chances, even after IVF, we preliminary tested a hypothesis that higher BMI among non-obese endometriosis patients improves IVF outcomes...
November 16, 2017: BMC Women's Health
https://www.readbyqxmd.com/read/29145436/scrambled-eggs-proteomic-portraits-and-novel-biomarkers-of-egg-quality-in-zebrafish-danio-rerio
#9
Ozlem Yilmaz, Amélie Patinote, Thao Vi Nguyen, Emmanuelle Com, Regis Lavigne, Charles Pineau, Craig V Sullivan, Julien Bobe
Egg quality is a complex biological trait and a major determinant of reproductive fitness in all animals. This study delivered the first proteomic portraits of egg quality in zebrafish, a leading biomedical model for early development. Egg batches of good and poor quality, evidenced by embryo survival for 24 h, were sampled immediately after spawning and used to create pooled or replicated sample sets whose protein extracts were subjected to different levels of fractionation before liquid chromatography and tandem mass spectrometry...
2017: PloS One
https://www.readbyqxmd.com/read/29145064/dog-cloning-with-in%C3%A2-vivo-matured-oocytes-obtaining-using-serum-estradiol-levels-for-predicting-time-of-ovulation
#10
Minghui Zhao, Seunghoon Lee, Dong-Hoon Kim, Jingu No, Yoonseok Nam, Sun A Ock, Yeoung-Gyu Ko, Tai-Young Hur
Dog cloning using in vivo-matured oocytes has been carried out for a decade. To obtain mature oocytes, serum progesterone (P4) levels are used to evaluate ovulation. However, the accuracy of these methods is not sufficient. Thus, the aim of the present study was to verify the feasibility of serum estradiol (E2) on canine ovulation determination as assessed by the percentage of dogs yielding mature oocytes. In vivo-matured oocytes were utilized for canine somatic cell nuclear transfer (SCNT), and serum P4 and E2 levels were assessed to determine ovulation and oocyte maturation...
October 27, 2017: Theriogenology
https://www.readbyqxmd.com/read/29143944/one-thousand-seventy-eight-autologous-ivf-cycles-in-women-45%C3%A2-years-and-older-the-largest-single-center-cohort-to-date
#11
Vinay Gunnala, Mohamad Irani, Alexis Melnick, Zev Rosenwaks, Steven Spandorfer
PURPOSE: The purpose of this study was to determine IVF outcomes in women 45 years and older using autologous oocytes. METHODS: This is a retrospective cohort study reviewing all IVF cycles in women ≥ 45 years old from January 1995 to June 2015 that were conducted at one academic medical center. One thousand seventy-eight fresh, autologous IVF cycles met inclusion criteria. PGD/S, natural IVF, and donor egg cycles were excluded. Outcomes were analyzed for the different age groups (age 45, n = 773; age 46, n = 221; age 47, n = 57; age 48, n = 22; age 49, n = 5)...
November 16, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29143382/the-effect-of-resveratrol-on-the-developmental-competence-of-porcine-oocytes-vitrified-at-germinal-vesicle-stage
#12
Ecs Santos, R Appeltant, T Q Dang-Nguyen, J Noguchi, H Kaneko, K Kikuchi, T Somfai
We tested the effects of resveratrol both as a pre-treatment and as a recovery treatment after warming during in vitro maturation (IVM) on the viability and developmental competence of porcine oocytes vitrified at the germinal vesicle stage. Pre-treatment before vitrification of oocytes for 3 hr with 2 μM resveratrol did not affect survival, oocyte maturation and embryo developmental competence to the blastocyst stage after parthenogenetic activation. However, supplementation of the medium with resveratrol during subsequent IVM after vitrification and warming significantly improved the ability of surviving oocytes to develop to the blastocyst stage, and this effect was observed only on vitrified, but not on non-vitrified oocytes...
November 16, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29142448/expression-of-the-bone-morphogenetic-protein-2-bmp2-in-the-human-cumulus-cells-as-a-biomarker-of-oocytes-and-embryo-quality
#13
Sirin B Demiray, Ozlem Yilmaz, Ege N T Goker, Erol Tavmergen, Nilufer Calimlioglu, Ugur Sezerman, Huseyin O Soykam, Gulperi Oktem
Background: The members of the transforming growth factor-B superfamily, as the bone morphogenetic proteins (BMPs) subfamily and anti-Müllerian hormone (AMH), play a role during follicular development, and the bone morphogenetic protein-2 (BMP2), AMH, and THY1 are expressed in ovaries. Aim: This study was designed to define whether or not the expressions of these proteins in human cumulus cells (CCs) can be used as predictors of the oocyte and embryo competence...
July 2017: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/29142207/phosphorylation-dynamics-dominate-the-regulated-proteome-during-early-xenopus-development
#14
Elizabeth H Peuchen, Olivia F Cox, Liangliang Sun, Alex S Hebert, Joshua J Coon, Matthew M Champion, Norman J Dovichi, Paul W Huber
The earliest stages of animal development are largely controlled by changes in protein phosphorylation mediated by signaling pathways and cyclin-dependent kinases. In order to decipher these complex networks and to discover new aspects of regulation by this post-translational modification, we undertook an analysis of the X. laevis phosphoproteome at seven developmental stages beginning with stage VI oocytes and ending with two-cell embryos. Concurrent measurement of the proteome and phosphoproteome enabled measurement of phosphosite occupancy as a function of developmental stage...
November 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29141509/relative-morphokinetics-assessed-by-time-lapse-imaging-are-altered-in-embryos-from-patients-with-endometriosis
#15
Alexander Freis, Jens Erik Dietrich, Moritz Binder, Verena Holschbach, Thomas Strowitzki, Ariane Germeyer
INTRODUCTION: Time-lapse technology allows almost continuous noninvasive assessment of embryonic development. It was shown previously that relative kinetics defining cleavage synchronicity are better predictors of blastocyst quality than absolute time points. This study aims to compare relative kinetics in embryos from patients with and without endometriosis. METHODS: Time-lapse data were collected retrospectively from 596 patients undergoing infertility treatment for in vitro fertilization from January 2011 to July 2016...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/29136189/serum-omega-3-fatty-acids-and-treatment-outcomes-among-women-undergoing-assisted-reproduction
#16
Y-H Chiu, A E Karmon, A J Gaskins, M Arvizu, P L Williams, I Souter, B R Rueda, R Hause, J E Chavarro
STUDY QUESTION: Are serum polyunsaturated fatty acids (PUFA) concentrations, including omega-3 (ω3-PUFA) and omega-6 (ω6-PUFA), related to ART outcomes? SUMMARY ANSWER: Serum levels of long-chain ω3-PUFA were positively associated with probability of live birth among women undergoing ART. WHAT IS KNOWN ALREADY: Intake of ω3-PUFA improves oocyte and embryo quality in animal and human studies. However, a recent cohort study found no relation between circulating ω3-PUFA levels and pregnancy rates after ART...
November 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29136154/the-number-of-oocytes-retrieved-during-ivf-a-balance-between-efficacy-and-safety
#17
Åsa Magnusson, Karin Källen, Ann Thurin-Kjellberg, Christina Bergh
STUDY QUESTION: What is the relationship between the number of oocytes collected in fresh IVF treatments and the likelihood of cumulative delivery rate (fresh and frozen) per oocyte aspiration, severe ovarian hyperstimulation syndrome (OHSS) and thromboembolic events? SUMMARY ANSWER: Cumulative delivery rate per aspiration increases up to 20 oocytes retrieved and then evens out while the incidence of severe OHSS increases more rapidly from around 18 oocytes and thromboembolic events, although rare, occurs in particular if 15 or more oocytes are retrieved...
November 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29136144/antioxidants-improve-ivf-outcome-and-subsequent-embryo-development-in-the-mouse
#18
T Truong, D K Gardner
STUDY QUESTION: What is the effect of a combination of three antioxidants (Acetyl-L-Carnitine, N-Acetyl-L-Cysteine and α-Lipoic Acid), present in IVF medium during mouse oocyte and sperm collection, on fertilization and subsequent IVF embryo development? SUMMARY ANSWER: A combination of antioxidants resulted in faster developmental times from the 2-cell stage through to expanded blastocyst stage, accompanied by a significant increase in blastocyst cell number and a reduction of intracellular hydrogen peroxide (H2O2) levels...
November 10, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29135280/factors-affecting-mouse-somatic-cell-nuclear-reprogramming-by-rabbit-ooplasms
#19
Xia Huang, Lili Song, Zhiyan Zhan, Haihui Gu, Haizhong Feng, Yanxin Li
Successful development of interspecies somatic cell nuclear transfer (iSCNT) embryos depends on compatibilities between ooplasmic and nuclear components. However, the mechanisms by which the compatibilities are regulated are still unknown. In this study, using mouse Oct4-green fluorescent protein (GFP) cells as donors and rabbit oocytes as recipients, we show that Oct4 and other pluripotency related genes were reactivated in some of mouse-rabbit iSCNT embryos, which could also activate Oct4 promoter-driven GFP reporter gene expression...
November 14, 2017: Cellular Reprogramming
https://www.readbyqxmd.com/read/29134715/relationship-between-follicular-volume-and-oocyte-competence-blastocyst-development-and-live-birth-rate-optimal-follicle-size-for-oocyte-retrieval
#20
Barbara Wirleitner, Jasmin Okhowat, Lucie Vištejnová, Milena Králíčková, Marie Karlíková, Pierre Vanderzwalmen, Fabien Ectors, Libor Hradecký, Maximilian Schuff, Maximilian Murtinger
OBJECTIVES: To analyse the oocyte competence in GnRHa stimulation cycles with regard to maturity, fertilization and blastocyst rate and clinical outcome (pregnancy and live birth rate) in correlation to follicular volume measured by 3D sonography and follicular fluid composition. METHODS: This was a prospective single-centre study conducted in the period June 2012 - June 2014 including 118 ovum pick-ups (OPUs) with subsequent embryo transfers (ET). Out of 1,493 aspirated follicles we analysed 1,236 follicles and traced oocytes grouped according to follicular volume...
November 14, 2017: Ultrasound in Obstetrics & Gynecology
keyword
keyword
65765
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"