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IVF Laboratory

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https://www.readbyqxmd.com/read/27889868/biobanking-of-different-body-fluids-within-the-frame-of-ivf-a-standard-operating-procedure-to-improve-reproductive-biology-research
#1
Michael Schenk, Berthold Huppertz, Barbara Obermayer-Pietsch, Darja Kastelic, Martina Hörmann-Kröpfl, Gregor Weiss
PURPOSE: The aim of the present study was to develop a standard operating procedure (SOP) for the collection, transport, and storage of human cumulus cells, follicular fluid, blood serum, seminal plasma, embryo culture supernatant, and embryo culture supernatant control obtained within the IVF process under approved protocols and written informed consent from participating patients. The SOP was developed at the Kinderwunsch Institut Schenk, Dobl, Austria, together with Biobank Graz of the Medical University of Graz, Austria...
November 26, 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27844488/how-do-laboratory-embryo-transfer-techniques-affect-ivf-outcomes-a-review-of-current-literature
#2
George Sigalos, Olga Triantafyllidou, Nikos Vlahos
Over the last few years, many studies have focused on embryo selection methods, whereas little attention has been given to the standardization of the procedure of embryo transfer. In this review, several parameters of the embryo transfer procedure are examined, such as the: (i) culture medium volume and loading technique; (ii) syringe and catheters used for embryo transfer; (iii) viscosity and composition of the embryo transfer medium; (iv) environment of embryo culture; (v) timing of embryo transfer; (vi) and standardization of the embryo transfer techniques...
November 15, 2016: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/27827818/oocyte-embryo-and-blastocyst-cryopreservation-in-art-systematic-review-and-meta-analysis-comparing-slow-freezing-versus-vitrification-to-produce-evidence-for-the-development-of-global-guidance
#3
REVIEW
Laura Rienzi, Clarisa Gracia, Roberta Maggiulli, Andrew R LaBarbera, Daniel J Kaser, Filippo M Ubaldi, Sheryl Vanderpoel, Catherine Racowsky
BACKGROUND: Successful cryopreservation of oocytes and embryos is essential not only to maximize the safety and efficacy of ovarian stimulation cycles in an IVF treatment, but also to enable fertility preservation. Two cryopreservation methods are routinely used: slow-freezing or vitrification. Slow-freezing allows for freezing to occur at a sufficiently slow rate to permit adequate cellular dehydration while minimizing intracellular ice formation. Vitrification allows the solidification of the cell(s) and of the extracellular milieu into a glass-like state without the formation of ice...
November 8, 2016: Human Reproduction Update
https://www.readbyqxmd.com/read/27821560/in-vitro-fertilization-research-is-translational-research
#4
Alan H DeCherney, Rebecca L Barnett
In vitro fertilization (IVF) is the perfect example of translational research. Changes in IVF and the IVF laboratory have been transmitted to clinical care, showing dramatic improvements in health outcomes, including notable increases in the cumulative pregnancy rate. Current research in the laboratory focusing on culture media, embryo selection criteria, and implementation of genetic testing and manipulation promises to translate to further improvements in our ability to assist human reproduction. The field of IVF and ART remains a large source for clinical and scientific discovery and development, and will require the proper interested and invested personnel, occupational structuring, and funding for continued success...
December 2016: Reproductive Sciences
https://www.readbyqxmd.com/read/27816236/elevated-circulating-micro-ribonucleic-acid-mirna-200b-and-mirna-429-levels%C3%A2-in-anovulatory-women
#5
Iris Eisenberg, Neta Nahmias, Michal Novoselsky Persky, Caryn Greenfield, Debra Goldman-Wohl, Arye Hurwitz, Ronit Haimov-Kochman, Simcha Yagel, Tal Imbar
OBJECTIVE: To study the role of micro-RNA (miRNA)-200b and miRNA-429 in human ovulation and to measure their expression levels in ovulatory and anovulatory patients. DESIGN: Micro-RNA-200b and miRNA-429 expression analysis in human serum and granulosa cells at different phases of the ovulation cycle in normal cycling women and women undergoing assisted reproductive technology cycles. SETTING: University-affiliated hospital and academic research laboratory...
November 2, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27793366/accurate-quantitation-of-mitochondrial-dna-reveals-uniform-levels-in-human-blastocysts-irrespective-of-ploidy-age-or-implantation-potential
#6
Andrea R Victor, Alan J Brake, Jack C Tyndall, Darren K Griffin, Christo G Zouves, Frank L Barnes, Manuel Viotti
OBJECTIVE: To accurately determine mitochondrial DNA (mtDNA) levels in human blastocysts. DESIGN: Retrospective analysis. SETTING: IVF clinic. PATIENT(S): A total of 1,396 embryos derived from 259 patients. INTERVENTION(S): Blastocyst-derived trophectoderm biopsies were tested by next-generation sequencing (NGS) and quantitative real-time polymerase chain reaction (qPCR). MAIN OUTCOME MEASURE(S): For each sample the mtDNA value was divided by the nuclear DNA value, and the result was further subjected to mathematical analysis tailored to the genetic makeup of the source embryo...
October 25, 2016: Fertility and Sterility
https://www.readbyqxmd.com/read/27770437/death-in-the-clinic-women-s-perceptions-and-experiences-of-discarding-supernumerary-ivf-embryos
#7
Sheryl de Lacey
Perspectives on the status of human embryos and whether they should be discarded differ globally. Some countries protect embryos in law while in other countries embryos 'die' or 'succumb' in assisted reproductive technology clinics on a daily basis. This study analyses interview data drawn from a larger qualitative study conducted in South Australia from 2004-2007. 21 women and 12 of 21 partners were interviewed about the decision they made to discard their embryos. The analysis reported here sought to examine the ways in which women constructed and experienced the decision to discard embryos...
October 22, 2016: Sociology of Health & Illness
https://www.readbyqxmd.com/read/27759447/comparison-of-the-results-of-preimplantation-genetic-screening-obtained-by-a-cgh-and-ngs-methods-from-the-same-embryos
#8
N Aleksandrova, E Shubina, A Ekimov, T Kodyleva, I Mukosey, N Makarova, E Kulakova, L Levkov, D Trofimov, G Sukhikh
Chromosomal aneuploidies are known for being the main cause of abnormal development of embryos with normal morphology, their implantation failure and early reproductive losses in IVF treatments. Preimplantation genetic screening (PGS) allows selecting embryos with normal chromosomal content and increases IVF treatment efficiency due to higher implantation rates and less frequent early pregnancy losses. New technologies used for PGS allow making genome-wide analysis of the presence of all chromosomes in embryos...
October 2016: Gynecological Endocrinology
https://www.readbyqxmd.com/read/27695529/oxidation-reduction-potential-of-semen-what-is-its-role-in-the-treatment-of-male-infertility
#9
Ashok Agarwal, Shubhadeep Roychoudhury, Kimberly B Bjugstad, Chak-Lam Cho
The diagnosis of male infertility relies largely on conventional semen analysis, and its interpretation has a profound influence on subsequent management of patients. Despite poor correlation between conventional semen parameters and male fertility potential, inclusion of advanced semen quality tests to routine male infertility workup algorithms has not been widely accepted. Oxidative stress is one of the major mediators in various etiologies of male infertility; it has deleterious effects on spermatozoa, including DNA damage...
October 2016: Therapeutic Advances in Urology
https://www.readbyqxmd.com/read/27678484/microfluidics-for-mammalian-embryo-culture-and-selection-where-do-we-stand-now
#10
Séverine Le Gac, Verena Nordhoff
The optimization of in-vitro culture conditions and the selection of the embryo(s) with the highest developmental competence are essential components in an ART program. Culture conditions are manifold and they underlie not always evidence-based research but also trends entering the IVF laboratory. At the moment, the idea of using sequential media according to the embryo requirements has been given up in favor of the use of single step media in an uninterrupted manner due to practical issues such as time-lapse incubators...
September 27, 2016: Molecular Human Reproduction
https://www.readbyqxmd.com/read/27670939/evaluation-of-spermatozoal-function-useful-tools-or-just-science
#11
W Niżański, A Partyka, S Prochowska
Conventional microscopic semen analysis does not provide precise information on the fertilizing potential of a male. The traditional basis for semen evaluation is that male fertility is dependent on production of a "proper" concentration/number of motile, morphologically normal spermatozoa in excess to achieve conception. Many independent studies, especially in human medicine, have demonstrated that the absolute number of spermatozoa does not accurately determine fertility, but their functional competence. Many functional tests of spermatozoa are developed over the last decades...
September 2016: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/27664207/population-trends-and-live-birth-rates-associated-with-common-art-treatment-strategies
#12
Georgina M Chambers, Handan Wand, Alan Macaldowie, Michael G Chapman, Cynthia M Farquhar, Mark Bowman, David Molloy, William Ledger
STUDY QUESTION: Have ART live birth rates improved in Australia over the last 12 years? SUMMARY ANSWER: There were striking improvements in per-cycle live birth rates observed for frozen/thaw embryo transfers, blastocyst transfer and single embryo transfer (SET), while live birth rates following ICSI were lower than IVF for non-male factor infertility in most years. WHAT IS ALREADY KNOWN: ART and associated techniques have become the predominant treatment of infertility over the past 30 years in most developed countries...
November 2016: Human Reproduction
https://www.readbyqxmd.com/read/27646677/improving-icsi-a-review-from-the-spermatozoon-perspective
#13
Mara Simopoulou, Laertis Gkoles, Panagiotis Bakas, Polina Giannelou, Theodoros Kalampokas, Konstantinos Pantos, Michael Koutsilieris
: Intracytoplasmic sperm injection (ICSI) is the most frequently applied method for fertilization making the process of identifying the perfect spermatozoon fundamental. Herein we offer a critical and thorough presentation on the techniques reported regarding (i) handling and preparing semen samples, (ii) identifying and 'fishing' spermatozoa, and (iii) improving key factors, such as motility for a successful ICSI practice. These approaches are suggested to make the process easier and more effective especially in atypical and challenging circumstances...
September 20, 2016: Systems Biology in Reproductive Medicine
https://www.readbyqxmd.com/read/27645282/how-much-have-we-learned-from-time-lapse-in-clinical-ivf
#14
D Castelló, Y Motato, N Basile, J Remohí, M Espejo-Catena, M Meseguer
Can the time-lapse system (TLS) identify the best embryo for transfer? Although there are several studies that support this hypothesis, more research is required to improve the quality of the current evidence and also to assess live birth rate, miscarriage, stillbirth or clinical pregnancy in order to choose between a TLS or conventional incubation. In addition, although some authors report on effectiveness and safety in the use of TLS monitoring of embryo development in vitro, other authors that have not found relevant differences between the two systems for the culture and subsequence embryo selection...
October 2016: Molecular Human Reproduction
https://www.readbyqxmd.com/read/27619691/early-recognition-and-treatment-of-sepsis-after-the-addition-of-lactate-to-the-laboratory-s-critical-result-call-list
#15
Hani I Kuttab, Ethan Sterk, Megan A Rech, Trac Nghiem, Burak Bahar, Stephen Kahn
PURPOSE: Screening of patients with sepsis is needed to increase recognition and allow for earlier interventions. There is no consensus on whether the addition of lactate to the critical result laboratory's call list should be a standard practice. MATERIALS AND METHODS: This was a retrospective cohort study that compared management and outcomes of patients with sepsis having lactate ≥4 mmol/L before (group 1) and after (group 2) the addition of a critical result threshold of lactate of ≥4 mmol/L to the critical result laboratory's call list and its effects on time to antibiotics and intravenous fluids (IVFs)...
September 11, 2016: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/27595768/accuracy-of-preimplantation-genetic-screening-pgs-is-compromised-by-degree-of-mosaicism-of-human-embryos
#16
Norbert Gleicher, Andrea Vidali, Jeffrey Braverman, Vitaly A Kushnir, David H Barad, Cynthia Hudson, Yang-Guan Wu, Qi Wang, Lin Zhang, David F Albertini
BACKGROUND: To preclude transfer of aneuploid embryos, current preimplantation genetic screening (PGS) usually involves one trophectoderm biopsy at blastocyst stage, assumed to represent embryo ploidy. Whether one such biopsy can correctly assess embryo ploidy has recently, however, been questioned. METHODS: This descriptive study investigated accuracy of PGS in two ways. Part I: Two infertile couples donated 11 embryos, previously diagnosed as aneuploid and, therefore, destined to be discarded...
September 5, 2016: Reproductive Biology and Endocrinology: RB&E
https://www.readbyqxmd.com/read/27575500/basal-follicle-stimulating-hormone-level-correlated-to-age-is-a-good-prognostic-criterion-for-the-outcome-of-intracytoplasmic-sperm-microinjection
#17
Moez Kdous, Ghaya Merdassi, Fethi Zhioua, Hanène Elloumi, Khadija Kacem, Amel Zhioua
BACKGROUND: Age and increased FSH serum level in women are prognosis criteriae associated with decreased fertility. OBJECTIVE: The aim of this study was to investigate whether age-specific FSH concentration can be a predictor of the outcome of ovarian stimulation in women undergoing IVF. METHODS: A total of 676 women undergoing their first IVF cycle over a 3-year period were included in this retrospective cohort study. Patients were grouped according to age (< or ≥  38 years), and within each age range, patients were grouped into bFSH quartiles (< or ≥  9...
March 2016: La Tunisie Médicale
https://www.readbyqxmd.com/read/27523724/intrafollicular-transfer-of-fresh-and-vitrified-immature-bovine-oocytes
#18
José Felipe W Sprícigo, Severino Bernardino Sena Netto, Carolle Vieira Muterlle, Sarah de Andrade Dias Rodrigues, Ligiane Oliveira Leme, Ana Luiza Guimarães, Felippe Manoel Costa Caixeta, Maurício Machain Franco, Ivo Pivato, Margot Alves Nunes Dode
Embryo production by intrafollicular oocyte transfer (IFOT) represents an alternative for production of a large number of embryos without requiring any hormones and only basic laboratory handling. We aimed to (1) evaluate the efficiency of IFOT using immature oocytes (IFIOT) and (2) compare embryo development after IFIOT using fresh or vitrified immature oocytes. First, six IFIOTs were performed using immature oocytes obtained by ovum pickup. After insemination and uterine flush for embryo recovery, 21.3% of total transferred structures were recovered excluding the recipient's own oocyte or embryo, and of those, 26% (5...
November 2016: Theriogenology
https://www.readbyqxmd.com/read/27491771/pre-implantation-genetic-testing-in-art-who-will-benefit-and-what-is-the-evidence
#19
Alberto Vaiarelli, Danilo Cimadomo, Antonio Capalbo, Giovanna Orlando, Fabio Sapienza, Silvia Colamaria, Antonio Palagiano, Carlo Bulletti, Laura Rienzi, Filippo Maria Ubaldi
Pre-implantation genetic diagnosis for aneuploidy testing (PGD-A) is a tool to identify euploid embryos during IVF. The suggested populations of patients that can benefit from it are infertile women of advanced maternal age, with a history of recurrent miscarriages and/or IVF failures. However, a general consensus has not yet been reached.After the clinical failure of its first version based on cleavage stage biopsy and 9 chromosome-FISH analysis, PGD-A is currently performed by 24 chromosome screening techniques on trophectoderm (TE) biopsies...
October 2016: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/27423729/susceptibility-of-porcine-preimplantation-embryos-to-viruses-associated-with-reproductive-failure
#20
REVIEW
Haijing Zhao, Guangyuan Zhao, Wenjun Wang
In the modern biological area, the applications of pig as a laboratory model have extensive prospects, such as gene transfer, IVF, SCNT, and xenotransplantation. However, the risk of pathogen transmission by porcine embryos is always a topic to be investigated, especially the viruses related to reproductive failure, for instance, pseudorabies virus, porcine reproductive and respiratory syndrome virus, porcine parvovirus, and porcine circovirus type 2. It should be mentioned that the zona pellucida (ZP) of porcine embryos can be a barrier against the viruses, but certain pathogens may stick to or even pass through the ZP...
October 15, 2016: Theriogenology
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