keyword
MENU ▼
Read by QxMD icon Read
search

IVF Laboratory

keyword
https://www.readbyqxmd.com/read/29126233/endothelin-1-promotes-human-germinal-vesicle-stage-oocyte-maturation-by-downregulating-connexin-26-expression-in-cumulus-cells
#1
Long Cui, Jiajie Shen, Li Fang, Xiaodan Mao, Hanzhi Wang, Yinghui Ye
STUDY QUESTION: Does endothelin-1 (ET-1) promote human oocyte maturation and by what mechanism? SUMMARY ANSWER: Addition of ET-1 to the medium in which human germinal vesicle (GV)-stage immature oocytes are cultured enhances the GV breakdown (GVBD) rate; the resumption of meiosis may be initiated by ET-1 downregulating the expression of connexin-26 (Cx26) in cumulus cells via endothelin receptor type B (ETRB), leading to decreased cAMP levels in the oocyte. WHAT IS KNOWN ALREADY: The paracrine factor ET-1 is secreted by ovarian somatic cells in pre-ovulatory follicles and regulates oocyte maturation in mice...
November 8, 2017: Molecular Human Reproduction
https://www.readbyqxmd.com/read/29107981/prevalence-and-risk-factors-of-monochorionic-diamniotic-twinning-after-assisted-reproduction-a-six-year-experience-base-on-a-large-cohort-of-pregnancies
#2
Bing Song, Zhao-Lian Wei, Xiao-Feng Xu, Xue Wang, Xiao-Jin He, Huan Wu, Ping Zhou, Yun-Xia Cao
OBJECTIVE: To characterize the incidence and risk factors for monochorionic diamniotic(MC-DA) twinning after assisted reproductive technologies (ART). DESIGN: Retrospective population-based study. SETTING: The study was conducted in China; Department of Reproductive Medicine Center at The First Affiliated Hospital of Anhui Medical University. POPULATION: A cohort of 8860 clinical pregnancies after embryo transfer (ET) carried out in our center between 2011 and 2016 were retrospectively analyzed for the incidence of MC-DA twinning...
2017: PloS One
https://www.readbyqxmd.com/read/29093204/in-vitro-fertilization-in-mice
#3
Robert Taft
In vitro fertilization (IVF) involves fertilization of mature oocytes with capacitated sperm in a tissue culture dish. This technique can generate large numbers of cleavage-stage embryos without using a significant number of single-caged stud males for mating. In addition, sperm penetration is synchronous during incubation with mature oocytes, leading to synchronous development, unlike fertilization in vivo, when natural ovulation is usually spread over time. These embryos can be used for a variety of applications including rapid strain expansion and generation of age-matched experimental cohorts as well as cryopreservation at the two-cell stage (speed cryo)...
November 1, 2017: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/29093203/mouse-sperm-cryopreservation-using-cryoprotectant-containing-monothioglycerol-mtg
#4
Robert Taft
Significant progress has been made in sperm cryopreservation. It is now possible to achieve more consistent fertilization rates using in vitro fertilization (IVF) with cryorecovered sperm. Including the antioxidant monothioglycerol (MTG) in the cryoprotectant may increase the fertilization rate. This protocol has been successfully used at The Jackson Laboratory since 2007 to cryopreserve >5000 strains on many genetic backgrounds. Although it is possible to recover motile sperm from 2-yr-old mice, sperm quality often begins to decline by 6 mo of age...
November 1, 2017: Cold Spring Harbor Protocols
https://www.readbyqxmd.com/read/29077897/in-vivo-oxygen-temperature-and-ph-dynamics-in-the-female-reproductive-tract-and-their-importance-in-human-conception-a-systematic-review
#5
Ka Ying Bonnie Ng, Roel Mingels, Hywel Morgan, Nick Macklon, Ying Cheong
BACKGROUND: Despite advances in ART, implantation and pregnancy rates per embryo transfer still remain low. IVF laboratories strive to ensure that the process of handling gametes in vitro closely mimics the in vivo environment. However, there remains a lack of knowledge regarding the in vivo regulation and dynamic variation in biophysical parameters such as oxygen concentration, pH and temperature within the reproductive tract. OBJECTIVE AND RATIONALE: To undertake a systematic review of the current understanding of the physico-chemical parameters of oxygen tension (pO2), pH and temperature within the female reproductive tract, and their potential implications in clinical and pathological processes related to fertility and those pertaining to limited reproductive capacity...
October 25, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/29047006/extended-culture-of-poor-quality-supernumerary-embryos-improves-art-outcomes
#6
Amira Sallem, Pietro Santulli, Virginie Barraud-Lange, Nathalie Le Foll, Lucile Ferreux, Chloé Maignien, Mathilde Bourdon, Charles Chapron, Dominique de Ziegler, Jean-Philippe Wolf, Khaled Pocate-Cheriet
PURPOSE: The aims of this study were to investigate the possible benefits of extending the culture of poor-quality day-2 embryos (PQE) versus good-quality embryos (GQE) and to identify factors associated with pregnancy and live birth when transferring frozen-thawed blastocysts originating from GQE and PQE. METHODS: This is a retrospective cohort follow-up study performed between November 2012 and February 2015 at the IVF Laboratory Unit of Cochin University Hospital (Paris, France) including 3108 day-2 supernumerary embryos resulting from 1237 IVF/ICSI cycles...
October 18, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28923286/abnormally-fertilized-oocytes-can-result-in-healthy-live-births-improved-genetic-technologies-for-preimplantation-genetic-testing-can-be-used-to-rescue-viable-embryos-in-in-vitro-fertilization-cycles
#7
Antonio Capalbo, Nathan Treff, Danilo Cimadomo, Xin Tao, Susanna Ferrero, Alberto Vaiarelli, Silvia Colamaria, Roberta Maggiulli, Giovanna Orlando, Catello Scarica, Richard Scott, Filippo Maria Ubaldi, Laura Rienzi
OBJECTIVE: To test whether abnormally fertilized oocyte (AFO)-derived blastocysts are diploid and can be rescued for clinical use. DESIGN: Longitudinal-cohort study from January 2015 to September 2016 involving IVF cycles with preimplantation genetic testing for aneuploidy (PGT-A). Ploidy assessment was incorporated whenever a blastocyst from a monopronuclear (1PN) or tripronuclear zygote (2PN + 1 smaller PN; 2.1 PN) was obtained. SETTING: Private IVF clinics and genetics laboratories...
September 15, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28874259/outcomes-from-a-university-based-low-cost-in%C3%A2-vitro-fertilization-program-providing-access-to-care-for-a-low-resource-socioculturally-diverse-urban-community
#8
Christopher N Herndon, Yanett Anaya, Martha Noel, Hakan Cakmak, Marcelle I Cedars
OBJECTIVE: To report on outcomes from a university-based low-cost and low-complexity IVF program using mild stimulation approaches and simplified protocols to provide basic access to ART to a socioculturally diverse low-income urban population. DESIGN: Retrospective cohort study. SETTING: Academic infertility center. PATIENT(S): Sixty-five infertile couples were enrolled from a county hospital serving a low-resource largely immigrant population...
October 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28872129/bottlenose-dolphin-tursiops-truncatus-spermatozoa-collection-cryopreservation-and-heterologous-in-vitro-fertilization
#9
María Jesús Sánchez-Calabuig, Francisco Alberto García-Vázquez, Ricardo Laguna-Barraza, Carlos Barros-García, Daniel García-Parraga, Dimitrios Rizos, Alfonso Gutiérrez Adan, José Félix Pérez-Gutíerrez
The use of cryopreserved dolphin spermatozoa facilitates the exchange of genetic material between aquatic parks and makes spermatozoa accessible to laboratories for studies to further our understanding of marine mammal reproduction. Heterologous IVF, a replacement for homologous IVF, could provide a means to test the sperm fertility potential; to study gamete physiology and early embryo development; and to avoid the use of valuable dolphin oocytes, which are difficult to obtain. Here, we present protocols that have been successfully used to collect and cryopreserve dolphin spermatozoa...
August 21, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28854581/unexplained-recurrent-miscarriages-are-associated-with-an-aberrant-sperm-protamine-mrna-content
#10
Nina Rogenhofer, Johannes Ott, Adrian Pilatz, Julia Wolf, Christian J Thaler, Lisa Windischbauer, Undraga Schagdarsurengin, Klaus Steger, Viktoria von Schönfeldt
STUDY QUESTION: Are unexplained recurrent miscarriages associated with abnormal protamine-1 and protamine-2 mRNA levels in spermatozoa? SUMMARY ANSWER: Both protamine-1 and protamine-2 mRNA levels as well as the protamine-1 to protamine-2 mRNA ratio in spermatozoa from men whose female partners experienced two or more consecutive miscarriages were significantly different compared to those from both healthy control men and subfertile couples undergoing IVF/ICSI. WHAT IS KNOWN ALREADY: Aberrant sperm protamine ratios are known to be associated with male-factor infertility...
August 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28758852/dehydroepiandrosterone-supplementation-in-women-undergoing-assisted-reproductive-technology-with-poor-ovarian-response-a-prospective-case-control-study
#11
Haifa A Al-Turki
Objective The effects of dehydroepiandrosterone (DHEA) supplementation in Saudi Arabian women with poor ovarian response (POR) is presently unknown. The present study aimed to assess the benefits of DHEA supplementation in women undergoing in vitro fertilization (IVF) or intracytoplasmic sperm injection (ICSI). Methods This was a prospective case-control study involving 62 women who were diagnosed with POR and underwent IVF/ICSI between January 2012 and June 2016. The positive influence of DHEA in 34 women, compared with 28 women without supplementation, was defined as improvements in the number of oocytes retrieved, the fertilization rate, the number of grade I embryos generated and the pregnancy rate...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28756898/paving-the-way-for-a-gold-standard-of-care-for-infertility-treatment-improving-outcomes-through-standardization-of-laboratory-procedures
#12
REVIEW
William Schoolcraft, Marcos Meseguer
Infertility affects over 70 million couples globally. Access to, and interest in, assisted reproductive technologies is growing worldwide, with more couples seeking medical intervention to conceive, in particular by IVF. Despite numerous advances in IVF techniques since its first success in 1978, almost half of the patients treated remain childless. The multifactorial nature of IVF treatment means that success is dependent on many variables. Therefore, it is important to examine how each variable can be optimized to achieve the best possible outcomes for patients...
July 14, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28715980/clinical-aspects-of-infertile-47-xyy-patients-a-retrospective-study
#13
Parnaz Borjian Boroujeni, Marjan Sabbaghian, Ahmad Vosough Dizaji, Shabnam Zarei Moradi, Navid Almadani, Faranak Mohammadpour Lashkari, Mohamad Reza Zamanian, Anahita Mohseni Meybodi
47,XYY syndrome is a sex chromosomal anomaly in men, which may be associated with infertility and has an incidence of 0.1% of male births. The clinical and paraclinical characteristics of men suffering from this anomaly have not been fully described. In this retrospective study, we present 37 cases of 47,XYY infertile men with sperm counts varying from normal to azoospermia, referred to the Genetics Laboratory at the Royan Institute, Iran. Thirteen individuals were mosaic and 24 non-mosaics. Non-mosaic patients were classified as azoospermic (nine cases) and normospermic/oligozoospermic men (15 cases)...
July 18, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28697346/-necrozoospermia-from-etiologic-diagnosis-to-therapeutic-management
#14
A Dumont, A-L Barbotin, V Lefebvre-Khalil, V Mitchell, J-M Rigot, F Boitrelle, G Robin
This review describes necrospermia, its diagnosis, causes and management. Sperm vitality is commonly assessed in the laboratory of reproductive biology, with the eosin test or with the hypo-osmotic swelling test. Necrospermia is defined by a percentage of living spermatozoa inferior to 58%, and can be related to male infertility. Several pathological mechanisms may be involved and can be classified either in testicular causes (hyperthyroidism, local hyperthermia, varicocele), or post-testicular causes (epididymal necrospermia, dysregulation of seminal plasma, adult polycystic kidney disease, vasectomy reversal, anti-sperm antibodies) or both (infection, toxic, age, spinal cord injury)...
April 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28696244/effect-of-vitrification-on-in-vitro-development-and-imprinted-gene-grb10-in-mouse-embryos
#15
Jianfeng Yao, Lixia Geng, Rongfu Huang, Weilin Peng, Xuan Chen, Xiaohong Jiang, Miao Yu, Ming Li, Yanfang Huang, Xiaoyu Yang
Vitrification of embryos is a routine procedure in IVF (in vitro fertilization) laboratories. In the present study, we aimed to investigate the effect of vitrification on mouse preimplantation embryo development in vitro, and effect on the epigenetic status of imprinted gene Grb10 in mouse embryos. The blastocyst formation rate for vitrified 8-cell embryos was similar to the non-vitrified 8-cell embryos, whereas the blastocyst hatching rate was lower than that of the non-vitrified group. The expression level of Grb10 major-type transcript decreased significantly in vitrified blastocysts compared with non-vitrified and in vivo blastocysts...
September 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28612309/pre-implantation-genetic-diagnosis-should-we-use-icsi-for-all
#16
Baruch Feldman, Adva Aizer, Masha Brengauz, Keren Dotan, Jacob Levron, Eyal Schiff, Raoul Orvieto
OBJECTIVE: Intracytoplasmic sperm injection (ICSI) is commonly used during pre-implantation genetic diagnosis (PGD) in vitro fertilization (IVF), aiming to eliminate the risk of contamination from extraneous sperm DNA. Recently, ICSI "overuse" in non-male infertility has been doubted, since it does not offer an advantage over IVF. Prompted by the aforementioned observations, we sought to assess the accuracy of IVF vs ICSI in PGD cases, as might be reflected by a difference in the prevalence of discarded embryos as a consequent of parental contamination...
September 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28610639/impact-of-the-ivf-laboratory-environment-on-human-preimplantation-embryo-phenotype
#17
D K Gardner, R L Kelley
The phenotype of the human embryo conceived through in vitro fertilization (IVF), that is its morphology, developmental kinetics, physiology and metabolism, can be affected by numerous components of the laboratory and embryo culture system (which comprise the laboratory environment). The culture media formulation is important in determining embryo phenotype, but this exists within a culture system that includes oxygen, temperature, pH and whether an embryo is cultured individually or in a group, all of which can influence embryo development...
August 2017: Journal of Developmental Origins of Health and Disease
https://www.readbyqxmd.com/read/28608497/the-effect-of-hpv-infection-on-ivf-outcomes-a-systematic-review-and-meta-analysis
#18
REVIEW
Charalampos Siristatidis, Dennis Vaidakis, Eleni Sertedaki, Wellington Martins
OBJECTIVES: Tο identify, appraise and summarize the available data, concerning the impact of HPV infection on the reproductive outcomes following in vitro fertilization (IVF). METHODS: We searched for studies on PubMed, Embase, Scopus, Lilacs and the Cochrane Central Register of Controlled Trials from inception to Mar-2017. Any type of HPV infection in the woman assessed through PCR, subfertility factors and IVF indications and protocols were considered. Our primary outcomes were live birth/ongoing pregnancy and miscarriage, while secondary included clinical and laboratory parameters...
June 13, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28600620/national-survey-on-use-of-time-lapse-imaging-systems-in-ivf-laboratories
#19
Andrey V Dolinko, L V Farland, D J Kaser, S A Missmer, C Racowsky
PURPOSE: Several time-lapse imaging (TLI) systems for non-invasive continuous monitoring of developing embryos are currently available. The present study explored the prevalence, means of acquisition, and clinical application of TLI systems in USA in vitro fertilization (IVF) laboratories. METHODS: An online cross-sectional survey of 294 USA IVF laboratory directors was conducted in February and March 2016. Those directing more than one laboratory were asked to complete the survey for their home program and for their smallest laboratory by number of IVF/intracytoplasmic sperm injection (ICSI) cycle starts...
September 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28583200/high%C3%A2-quality-clinical%C3%A2-grade-human-embryonic-stem-cell-lines-derived-from-fresh-discarded-embryos
#20
Jinpei Ye, Nicola Bates, Despina Soteriou, Lisa Grady, Clare Edmond, Alex Ross, Alan Kerby, Philip A Lewis, Tope Adeniyi, Ronnie Wright, Kay V Poulton, Marcus Lowe, Susan J Kimber, Daniel R Brison
BACKGROUND: Human embryonic stem cells (hESCs) hold tremendous promise for cell replacement therapies for a range of degenerative diseases. In order to provide cost-effective treatments affordable by public health systems, HLA-matched allogeneic tissue banks of the highest quality clinical-grade hESCs will be required. However only a small number of existing hESC lines are suitable for clinical use; they are limited by moral and ethical concerns and none of them apply Good Manufacturing Practice (GMP) standards to the earliest and critical stages of gamete and embryo procurement...
June 5, 2017: Stem Cell Research & Therapy
keyword
keyword
95882
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"