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Embryo Culture Media

Denise Laskowski, Ylva Sjunnesson, Hans Gustafsson, Patrice Humblot, Göran Andersson, Renée Båge
BACKGROUND: Insulin has been used as a stimulatory factor for in vitro cell culture since many years. Even for routine in vitro embryo production (IVP), insulin is added to the media during different steps. There is a strong difference in concentrations used in vitro compared to what is measured in vivo in follicular fluid or serum. We performed a pilot study on insulin stability to explain possible reasons for that variation. RESULTS: We measured insulin concentrations before and after bovine oocyte maturation in an experiment by using a quantitative ELISA (Mercodia bovine insulin ELISA immunoassay) and found that concentrations were stable up to 22 h of incubation...
October 20, 2016: Acta Veterinaria Scandinavica
Constantine A Simintiras, Thomas Fröhlich, Thozhukat Sathyapalan, Georg J Arnold, Susanne E Ulbrich, Henry J Leese, Roger G S Sturmey
Oviduct fluid is the microenvironment that supports early reproductive processes including fertilisation, embryo cleavage, and genome activation. However, the composition and regulation of this critical environment remains rather poorly defined. This study uses an in vitro preparation of the bovine oviduct epithelium, to investigate the formation and composition of in vitro derived oviduct fluid (ivDOF) within a controlled environment. We confirm the presence of oviduct specific glycoprotein 1 in ivDOF and show that the amino acid and carbohydrate content resembles that of previously reported in vivo data...
October 13, 2016: Reproduction: the Official Journal of the Society for the Study of Fertility
E Dietzel, J Floehr, E Van de Leur, R Weiskirchen, W Jahnen-Dechent
STUDY QUESTION: Does fetuin-B inhibit premature zona pellucida (ZP) hardening in mouse oocytes in vitro and thus increase IVF rate? SUMMARY ANSWER: Supplementation of oocyte in vitro maturation (IVM) media with recombinant mouse fetuin-B (rmFetuB) increased fertilization rate without affecting mouse embryo development into blastocysts. WHAT IS KNOWN ALREADY: Mice deficient in fetuin-B are infertile owing to premature ZP hardening. Premature ZP hardening also occurs during oocyte IVM leading to decreased fertilization rate...
October 12, 2016: Molecular Human Reproduction
Kindra Rader, Young-Ho Choi, Katrin Hinrichs
Intracytoplasmic sperm injection is becoming a common clinical procedure in the horse, but little information is available on techniques for its performance. Each laboratory uses different procedures and different media for the steps involved with in vitro embryo production. This article outlines the procedures used in the Clinical Equine Intracytoplasmic Sperm Injection Program at Texas A&M University for in vitro blastocyst production during the past 3 years.
October 8, 2016: Veterinary Clinics of North America. Equine Practice
Gábor L Kovács, Gergely Montskó, Zita Zrínyi, Nelli Farkas, Ákos Várnagy, József Bódis
Human reproduction is a relatively inefficient process and therefore the number of infertile couples is high. Assisted reproductive technologies (ART) have facilitated the birth of over five million children worldwide. ART, however, superimposes its own relative inefficiency on the preexisting inefficiency of normal reproduction. The efficiency (expressed as pregnancy rate) is generally not more than 30%. Modern reproductive medicine is gradually moving from multiple embryo transfer to the transfer of a single embryo, mainly because of obvious and unwanted side effects of multiple embryo transfer (e...
April 2016: EJIFCC
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
I Mateizel, S Santos-Ribeiro, E Done, L Van Landuyt, H Van de Velde, H Tournaye, G Verheyen
STUDY QUESTION: Does the manipulation of gametes or embryos during ARTs increase the risk for monozygotic twinning (MZT)? SUMMARY ANSWER: Frozen embryo transfer (ET) is associated with a lower MZT rate, while blastocyst culture is associated with an increased risk of monozygotic pregnancy. WHAT IS KNOWN ALREADY: Monozygotic twins have a higher risk for perinatal complications. Although an increased incidence of monozygotic pregnancies after ART has been previously reported, data regarding the possible impact of different laboratory procedures are conflicting...
September 22, 2016: Human Reproduction
J Salvaing, N Peynot, M N Bedhane, S Veniel, E Pellier, C Boulesteix, N Beaujean, N Daniel, V Duranthon
STUDY QUESTION: In comparison to in vivo development, how do different conditions of in vitro culture ('one step' versus 'sequential medium') impact DNA methylation and hydroxymethylation in preimplantation embryos? SUMMARY ANSWER: Using rabbit as a model, we show that DNA methylation and hydroxymethylation are both affected by in vitro culture of preimplantation embryos and the effect observed depends on the culture medium used. WHAT IS KNOWN ALREADY: Correct regulation of DNA methylation is essential for embryonic development and DNA hydroxymethylation appears more and more to be a key player...
September 22, 2016: Human Reproduction
B Merlo, E Iacono, D Bucci, M Spinaci, G Galeati, G Mari
In vitro embryo production in the horse is still not as efficient as in other species. Oxidative stress negatively affects oocyte and embryo culture. To attenuate/minimize the oxidative stress, antioxidants such as low-molecular thiol compounds can be added to culture media. Beta-mercaptoethanol (BME) has been shown to improve maturation and embryo development in different species. The aim of this study was to investigate whether the addition to maturation medium of BME at common (0.1 mM) and high (0.7 mM) concentration could improve oocyte maturation also in the horse...
September 21, 2016: Reproduction in Domestic Animals, Zuchthygiene
Fang Gu, Mingfen Deng, Jun Gao, Zilian Wang, Chenhui Ding, Yanwen Xu, Canquan Zhou
BACKGROUND: Embryo culture media used for IVF treatment might affect fetal growth and thus birthweight of the newborns. METHODS: A retrospective study was conducted in South China using data from 2370 singleton neonates born after IVF/ICSI between 2009 and 2012. Two culture media, i.e., either Vitrolife or SAGE were used as embryo culture media during the study period. Neonates' birthweights were compared between the two embryo culture media groups. RESULTS: Among the 2370 singletons, 1755 cases came from fresh cleavage embryo transfer while 615 were from frozen-thawed cleavage embryo transfer...
2016: BMC Pregnancy and Childbirth
Ann E Rozner, Maureen Durning, Jenna Kropp, Gregory J Wiepz, Thaddeus G Golos
PROBLEM: Immune cells within the endometrium at implantation are thought to play an important role in implantation, although their exact role is not well understood. METHOD OF STUDY: A co-culture system of rhesus monkey embryos and maternal immune cells was established. Blastocysts obtained by in vitro fertilization were co-cultured with peripheral blood cells or decidual macrophages. Culture media were collected to assess secretions. Embryo growth was monitored, and trophoblasts were evaluated for proliferation, apoptosis, and differentiation...
November 2016: American Journal of Reproductive Immunology: AJRI
Laila Noli, Antonio Capalbo, Yaser Dajani, Danilo Cimadomo, Jean Bvumbe, Laura Rienzi, Filippo Maria Ubaldi, Caroline Ogilvie, Yacoub Khalaf, Dusko Ilic
Studies reporting term pregnancy and the production of genetically identical offspring from isolated blastomeres of early stage embryos have been carried out in small and large animals. However, very little is known about the effects of embryo splitting on the development and reproductive competency of human embryos. In this study, we investigated the effects of embryo splitting on profile of microRNAs (miRNAs) detected in their spent blastocyst medium (SBM) by comparative analysis of miRNA profiles in SBM of human twin embryos created by blastomere biopsy and SBM of blastocysts that resulted in a healthy pregnancy and live birth following embryo transfer...
October 17, 2016: Stem Cells and Development
Ana Bartmann, Amanda Turato Barbosa do Amaral, Letícia Gonçalves
OBJECTIVE: The present study aimed to draw a profile of the most commonly used media and protocol characteristics from assisted reproduction technology (ART) facilities in Brazil. METHODS: To obtain an overview of ART methods and culture media, a questionnaire was given to embryologists from ART clinics in Brazil. Further research in scientific papers and journals was carried out for describing the processes around Brazil, USA and Europe. RESULTS: From the questionnaire, we found that the embryo medium mostly used is CSCMTM from Irvine Scientific, represented 37...
2016: JBRA Assisted Reproduction
Mahbobeh Eshtiyaghi, Hamid Deldar, Zarbakht Ansari Pirsaraei, Bahram Shohreh
The aim of this study was to investigate the effect of different concentrations of royal jelly (RJ) on in vitro maturation (IVM), fertilization, cleavage, blastocyst rates, glutathione (GSH) content in ovine oocyte, mRNA abundance of antioxidant enzymes in both oocyte and cumulus, and glucose metabolism-related genes in cumulus cells. In vitro maturation of oocyte was performed in the presence of control (RJ0), 2.5 (RJ2.5), 5 (RJ5), and 10 (RJ10) mg/mL of RJ. Nuclear status, intracellular GSH content in oocytes, and mRNA abundance of selected genes were evaluated following 24 hours of IVM...
July 25, 2016: Theriogenology
M Wasielak, T Więsak, I Bogacka, B Moza Jalali, M Bogacki
Maternal effect genes (MEGs) are expressed in oocytes and embryos and play an important role in activation of the embryonic genome. An abnormality in the expression of these genes may lead to arrest of embryonic cleavage or to altered transcription of factors responsible for further embryonic development. In vitro-produced porcine embryos have a lower developmental potential than embryos produced in vivo. We hypothesized that in vitro embryo culture conditions have an effect on the expression of MEGs at various developmental stages, which may affect their developmental potential...
July 25, 2016: Theriogenology
Mousa I Shamonki, Helen Jin, Zachary Haimowitz, Lian Liu
OBJECTIVE: To assess whether preimplantation genetic screening (PGS) is possible by testing for free embryonic DNA in spent IVF media from embryos undergoing trophectoderm biopsy. DESIGN: Prospective cohort analysis. SETTING: Academic fertility center. PATIENT(S): Seven patients undergoing IVF and 57 embryos undergoing trophectoderm biopsy for PGS. INTERVENTION(S): On day 3 of development, each embryo was placed in a separate media droplet...
August 23, 2016: Fertility and Sterility
Mohammad Mehdi Naderi, Sara Borjian Boroujeni, Ali Sarvari, Banafsheh Heidari, Mohammad Mehdi Akhondi, Amir-Hassan Zarnani, Abolfazl Shirazi
BACKGROUND: This study was aimed to assess the effects of angiotensin II (Ang II) supplementation to the In Vitro Maturation (IVM) and In Vitro Culture (IVC) media of vitrified-warmed ovine oocytes on their developmental competence and expression of Na(+)/K(+)/ATPase in resulting embryos. METHODS: The slaughterhouse-derived immature oocytes (n=1069) were randomly distributed into four experimental groups: groups I and II) IVM/IVF and IVC of fresh and vitrified oocytes without angiotensin supplementation (Control-Fresh and Control-Vit groups, respectively); group III) IVM of vitrified oocytes in the presence of Ang II followed by IVF/IVC (Vit-IVM group); and group IV) IVM/IVF of vitrified oocytes followed by IVC wherein the embryos were exposed to Ang II on day 4 of IVC (Vit-D4 group)...
July 2016: Avicenna Journal of Medical Biotechnology
Seyed Mojtaba Hosseini, Ali Sharafkhah, Omid Koohi-Hosseinabadi, Maryam Semsar-Kazerooni
STUDY DESIGN: This study investigated the effects of transplantation of alginate encapsulated neural stem cells (NSCs) on spinal cord injury in Sprague-Dawley male rats. The neurological functions were assessed for 6 weeks after transplantation along with a histological study and measurement of caspase-3 levels. PURPOSE: The aim of this study was to discover whether NSCs cultured in alginate transplantation improve recovery from spinal cord injury. OVERVIEW OF LITERATURE: Spinal cord injury is one of the leading causes of disability and it has no effective treatment...
August 2016: Asian Spine Journal
Arne Sunde, Daniel Brison, John Dumoulin, Joyce Harper, Kersti Lundin, M Cristina Magli, Etienne Van den Abbeel, Anna Veiga
STUDY QUESTION: Is it important that end-users know the composition of human embryo culture media? SUMMARY ANSWER: We argue that there is as strong case for full transparency concerning the composition of embryo culture media intended for human use. WHAT IS KNOWN ALREADY: Published data suggest that the composition of embryo culture media may influence the phenotype of the offspring. STUDY DESIGN, SIZE, DURATION: A review of the literature was carried out...
October 2016: Human Reproduction
Sander H M Kleijkers, Eleni Mantikou, Els Slappendel, Dimitri Consten, Jannie van Echten-Arends, Alex M Wetzels, Madelon van Wely, Luc J M Smits, Aafke P A van Montfoort, Sjoerd Repping, John C M Dumoulin, Sebastiaan Mastenbroek
STUDY QUESTION: Does embryo culture medium influence pregnancy and perinatal outcome in IVF? SUMMARY ANSWER: Embryo culture media used in IVF affect treatment efficacy and the birthweight of newborns. WHAT IS KNOWN ALREADY: A wide variety of culture media for human preimplantation embryos in IVF/ICSI treatments currently exists. It is unknown which medium is best in terms of clinical outcomes. Furthermore, it has been suggested that the culture medium used for the in vitro culture of embryos affects birthweight, but this has never been demonstrated by large randomized trials...
October 2016: Human Reproduction
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