Results 1 to 10 of about 280,910 (369)
DNA double strand breaks but not interstrand crosslinks prevent progress through meiosis in fully grown mouse oocytes [PDF]
, 2012 There is some interest in how mammalian oocytes respond to different types of DNA damage because of the increasing expectation of fertility preservation in women undergoing chemotherapy.
Julie A. Merriman +4 more
core +13 more sources
Oocyte cryopreservation review: outcomes of medical oocyte cryopreservation and planned oocyte cryopreservation [PDF]
Reproductive Biology and Endocrinology, 2022 Abstract Background The utilization of oocyte cryopreservation (OC) has become popularized with increasing numbers of reproductive-aged patients desiring to maintain fertility for future family building. OC was initially used for fertility preservation in postmenarchal patients prior to gonadotoxic therapies; however, it
Zachary Walker +2 more
openaire +3 more sources
On cyclins, oocytes, and eggs [PDF]
Molecular Reproduction and Development, 1997 Oocyte and egg are suitable model systems for studying cell division since meiotic maturation resembles a G2/M transition and early embryonic divisions are precisely timed and occur without zygotic transcription. The analysis of oocytes and eggs from different species provides the opportunity to understand the roles of proteins that the critical to the
Taieb, Frederic +2 more
openaire +5 more sources
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 ...
Guido de Wert +3 more
openaire +3 more sources
Preventing effect of vitamin E on oocytes apoptosis in morphinetreated mice [PDF]
, 2013 Several studies have shown that Morphine Sulfate affects on fertility, embryogenesis and consequent pregnancy loss and ultrastructural alterations of oocytes in animal model.
Asadi, E. +3 more
core +1 more source
Oocyte activation deficiency: a role for an oocyte contribution? [PDF]
Human Reproduction Update, 2015 Infertility affects between 10 and 16% of couples worldwide. Twenty to 30% of cases of infertility are due to a male factor, 20-35% to a female factor, and 25-40% are due to both male and female factors. In ∼10-25% of cases, the precise underlying cause remains unclear.
Yeste, M +4 more
openaire +4 more sources
Human Reproduction, 1998 Cryopreservation of human oocytes has been employed with little success in clinical practice, even though it may solve the legal and ethical problems linked to embryo freezing. Various attempts to cryopreserve human oocytes have mostly been unsuccessful, leading to low oocyte survival rates after thawing, and the search for an optimal protocol for ...
R, Fabbri +8 more
openaire +2 more sources
Apoptosis in mouse fetal and neonatal oocytes during meiotic prophase one [PDF]
, 2007 Background The vast majority of oocytes formed in the fetal ovary do not survive beyond birth. Possible reasons for their loss include the elimination of non-viable genetic constitutions arising through meiosis, however, the ...
Ghafari , Fataneh +2 more
core +3 more sources
Vitrification of human immature oocytes before and after in vitro maturation: a review [PDF]
, 2017 The use of immature oocytes subjected to in vitro maturation (IVM) opens interesting perspectives for fertility preservation where ovarian reserves are damaged by pathologies or therapies, as in PCO/PCOS and cancer patients. Human oocyte cryopreservation
Ashourzadeh, S +5 more
core +1 more source
Human Reproduction, 1998 Primary oocytes recovered from small and growing follicles of > or = 3 mm in the ovaries of untreated women, can be matured in vitro, will fertilize and develop in vitro, and when transferred to the patient, develop to term. However, the implantation rate of cleaved embryos has been disappointingly low and when embryos are allowed to develop beyond the
A, Trounson +5 more
openaire +2 more sources