Results 31 to 40 of about 180,767 (311)
The generation of live offspring from vitrified oocytes [PDF]
, 2011 Oocyte cryopreservation is extremely beneficial for assisted reproductive technologies, the treatment of infertility and biotechnology and offers a viable alternative to embryo freezing and ovarian grafting approaches for the generation of embryonic stem
Sumer, Huseyin +40 more
core +2 more sources
eLife, 2016 Mammalian oocytes are arrested in the dictyate stage of meiotic prophase I for long periods of time, during which the high concentration of the p53 family member TAp63α sensitizes them to DNA damage-induced apoptosis.
Daniel Coutandin +15 more
doaj +1 more source
Telomere lengths in human oocytes, cleavage stage embryos and blastocysts [PDF]
, 2010 Telomeres are repeated sequences that protect the ends of chromosomes and harbour DNA-repair proteins. Telomeres shorten during each cell division in the absence of telomerase.
J. Rai +7 more
core +1 more source
Journal of Ovarian Research, 2011 Introduction The presence of oocytes in the ovarian surface epithelium has already been confirmed in the fetal ovaries. We report the presence of SSEA-4, SOX-2, VASA and ZP2-positive primitive oocyte-like cells in the adult ovarian surface epithelium of ...
Virant-Klun Irma +4 more
doaj +1 more source
Implications of oocyte cryostorage for the practice of oocyte donation [PDF]
Human Reproduction, 2012 As the efficiency of oocyte cryopreservation has increased rapidly in recent years, oocytes are currently being stored either in the course of IVF treatments or as a fertility preservation measure. These practices may have an impact on the number of available donor oocytes due to two different dynamics: first, a certain percentage of women for whom ...
Heidi, Mertes +3 more
openaire +2 more sources
Frontiers in Endocrinology, 2023 Infertility and menstrual abnormalities in endometriosis patients are frequently caused by aberrant follicular growth or a reduced ovarian reserve. Endometriosis typically does not directly harm the oocyte, but rather inhibits the function of granulosa ...
Weisen Fan +4 more
doaj +1 more source
Changes in expression of TNF alpha and its receptors mRNAs in oocytes and granulosa cells in mice with experimental immune ovarian failure [PDF]
, 2014 Purpose: To investigate the expression of TNF- α and its receptors (types I and II) at mRNA level in oocytes and granulose cells as well as to study effect of TNF-α on follicular cell death in mice with experimental immune ovarian failure induced by ...
Grushka, Nataliya +4 more
core +1 more source
Evaluation of different factors affecting the efficiency of oocytes cryopreservation in the bovine model [PDF]
, 2011 Interest in oocyte cryopreservation has recently increased. Cattle oocytes are sensitive to low temperatures, and despite the efforts of numerous research groups cryopreservation of oocytes remains a difficult task.
De Blasi, Marina
core +1 more source
Laser microdissection as a new approach to prefertilization genetic diagnosis [PDF]
, 2000 The genetic status of oocytes can be determined by polar body (PB) analysis. Following PB extraction, a genetic evaluation is performed. As each PB contains the complementary genetic material of the oocyte, PB analysis reveals information about its ...
Schütze, Karin +2 more
core +1 more source
Animals, 2022 Roundup, the most popular herbicide in global agriculture, is regarded as an endocrine disruptor causing alterations of important hormones at the hypothalamic−pituitary−gonadal axis as well as impairment of gametogenesis.
Magdalena Socha +7 more
doaj +1 more source