Results 171 to 180 of about 3,673 (215)

Influence of the male on embryo quality

Theriogenology, 2007
Early pregnancy failure or loss (EPL) represents a major source of wastage and inefficiency in livestock production systems. Although successful embryo development is dependent upon genetic and epigenetic contributions from both the male and female, potential adverse male affects on embryo quality and development are probably often underestimated.
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Embryo quality and pregnancy potential of fresh compared with frozen embryos--is freezing detrimental to high quality embryos?

Human reproduction (Oxford, England), 1995
To determine the effect of cryopreservation on embryo quality and the pregnancy potential of embryos, donated oocytes from the same donor (n = 24) were randomly allocated, with subsequent transfer to two or more different ovum recipients resulting in at least one fresh and one frozen embryo transfer cycle from the same cohort of oocytes.
C E, Selick, G E, Hofmann, C, Albano, G M, Horowitz, A B, Copperman, G J, Garrisi, D, Navot   +6 more
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Influence of sperm parameters on embryo quality

Fertility and Sterility, 1993
To evaluate the influence of sperm defects on embryo quality.Retrospective study.In vitro fertilization center.Embryo transfers (710) from IVF attempts for tubal disease (626) or male infertility (84).Embryo morphology as a function of causes of infertility, semen, and follicular growth parameters. Embryos were classified into three groups according to
J, Parinaud, R, Mieusset, G, Vieitez, B, Labal, G, Richoilley   +4 more
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Cumulus mass maintains embryo quality

Fertility and Sterility, 1994
To determine if co-culture of early stage embryos with their own cumulus mass improves embryo quality.Before insemination, cumulus masses along with cumulus matrices were separated from the oocytes surrounded by a few remaining cumulus cells. Fourteen hours after insemination, fertilized oocytes were each placed onto the cumulus cells, and matrix and ...
H, Saito, T, Hirayama, K, Koike, T, Saito, M, Nohara, M, Hiroi   +5 more
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Effect of semen quality on the embryo development

Journal of Huazhong University of Science and Technology [Medical Sciences], 2006
To investigate the influences of sperm quality on the zygotes and embryos development, as the role of the paternal factor in early human embryogenesis is gaining more attention because of the application of techniques such as intracytoplasmic sperm injection (ICSI) for the treatment of men infertility. 136 infertility couples with men factors (Group I )
Ying, Gao, Hanqin, Cheng, Yuhong, Gen, Genhong, Mao, Ying, Liang, Hongfa, Li   +5 more
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Embryo Quality and Freezing Tolerance: Cryopreservation of Human Embryos

2002
Freezing of mammalian embryos has become part of cryobiology around 30 years ago when the embryologist-cryobiologist team of Whittingham, (1972f>) published for the first time the successful freezing of the mouse embryo leading to the birth of living young.
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Effects of ovarian endometrioma on embryo quality

Fertility and Sterility, 2011
The proportions of good, fair, and poor embryos in 13 women with bilateral endometriomas were compared with those of 39 women without endometriomas and were found to be similar (47.2% vs. 41.1%, 28.3% vs. 32.8%, and 24.3% vs. 26.0%, respectively). Therefore, it appears that the presence of bilateral endometriomas during IVF treatment is not associated ...
Shauna L, Reinblatt, Levin, Ishai, Fady, Shehata, Weon-Y, Son, Togas, Tulandi, Benjamin, Almog   +5 more
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Noninvasive methods to assess embryo quality

Current Opinion in Obstetrics & Gynecology, 2005
The present review examines recent publications concerned with the issue of the number of embryos to replace in an in-vitro fertilization cycle and in doing so concentrates on the proposed selection methods that may allow us to transfer one or two embryos.A number of techniques that will allow us to ascertain the health and viability of the embryo are ...
Denny, Sakkas, David K, Gardner
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Embryo growth ratein vitro as an indicator of embryo quality in IVF cycles

Journal of Assisted Reproduction and Genetics, 1994
The role of embryo growth rate in vitro as an isolated indicator of embryo quality in IVF was evaluated retrospectively.Comparison was made between 98 cycles (group 1), in which only embryos at a cleavage stage of two to three blastomers were transferred, and 99 cycles (group 2), in which all embryos were transferred at a cleavage stage of four or more
A, Lewin, J G, Schenker, A, Safran, N, Zigelman, O, Avrech, Y, Abramov, S, Friedler, B E, Reubinoff   +7 more
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Characterization of a top quality embryo, a step towards single-embryo transfer

Human Reproduction, 1999
In most in-vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) programmes approximately one ongoing pregnancy in three is multiple. The need to characterize embryos with optimal implantation potential is obvious. We retrospectively examined all of 23 double transfers resulting in ongoing twins, occurring between January 1, 1996 and May 19,
E, Van Royen, K, Mangelschots, D, De Neubourg, M, Valkenburg, M, Van de Meerssche, G, Ryckaert, W, Eestermans, J, Gerris   +7 more
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