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https://www.readbyqxmd.com/read/28822010/vitrification-of-human-immature-oocytes-before-and-after-in-vitro-maturation-a-review
#1
REVIEW
Mohammad Ali Khalili, Abbas Shahedi, Sareh Ashourzadeh, Stefania Annarita Nottola, Guido Macchiarelli, Maria Grazia Palmerini
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 may offer some advantages compared to embryo freezing, such as fertility preservation in women at risk of losing fertility due to oncological treatment or chronic disease, egg donation and postponing childbirth. It also eliminates religious and/or other ethical, legal, and moral concerns of embryo freezing...
August 18, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28815355/egg-donation-of-vitrified-oocytes-bank-produces-similar-pregnancy-rates-by-blastocyst-transfer-when-compared-to-fresh-cycle
#2
Thais S Domingues, Ana Paula Aquino, Bruna Barros, Raquel Mazetto, Mariana Nicolielo, Carolina M Kimati, Talita Devecchi, Tatiana C S Bonetti, Paulo C Serafini, Eduardo L A Motta
PURPOSE: Advances in reproductive techniques, mainly the introduction of oocyte vitrification, have provided the opportunity to conceive from oocyte banks. The aim of this study was to compare the clinical outcomes of fresh and vitrified oocytes in an egg donation program following blastocyst transfer. METHODS: This retrospective observational study included 504 oocyte donation cycles. All donor women were younger than 30 years of age. The recipient cycles were divided into two groups: fresh oocytes (n = 78) or vitrified oocytes (n = 426)...
August 16, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28768116/on-reproductive-work-in-spain-transnational-adoption-egg-donation-surrogacy
#3
Diana Marre, Beatriz San Román, Diana Guerra
Spain's plummeting fertility since the late twentieth century may seem to reflect a waning desire for children. Nevertheless, reproductive disappointments resulting from gender inequalities cause many Spanish women to postpone motherhood and experience age-related fertility problems. For them, creating a family often becomes possible only through the reproductive labor of other women. Our analysis of transnational adoption, egg donation, and surrogacy in Spain shows how anonymity and altruism play out in these three strategies, with implications for the valuation of women's reproductive work and relationships among reproductive providers, intermediaries, recipients, and the resulting children...
August 2, 2017: Medical Anthropology
https://www.readbyqxmd.com/read/28758779/a-longitudinal-study-of-families-formed-through-reproductive-donation-parent-adolescent-relationships-and-adolescent-adjustment-at-age-14
#4
Susan Golombok, Elena Ilioi, Lucy Blake, Gabriela Roman, Vasanti Jadva
The aim of the 6th phase of this longitudinal study was to establish whether children born through assisted reproduction involving reproductive donation were at risk for psychological problems following the transition to adolescence at age 14 and, if so, to examine the nature of these problems and the mechanisms involved. Eighty-seven families formed through reproductive donation, including 32 donor insemination families, 27 egg donation families, and 28 surrogacy families, were compared with 54 natural conception families...
July 31, 2017: Developmental Psychology
https://www.readbyqxmd.com/read/28712675/ejaculates-are-not-used-as-nuptial-gifts-in-simultaneously-hermaphroditic-snails
#5
Monica Lodi, Fedde W Meijer, Joris M Koene
Promoted by sexual selection, males usually adopt different ways to increase their fertilization chances. In many insect taxa males donate nuptial gifts, together with sperm, which represent a valuable additional nutrient source that females can use to provision eggs. This has also been suggested to occur in simultaneous hermaphrodites, organisms with both sex functions. In theory, donation of nuptial gifts or extra nutrients might work in hermaphrodites that mate unilaterally (one-way donation of ejaculates), but will not be effective when these organisms mate reciprocally (mutual exchange of ejaculates), since on average each partner would receive the amount it also transfers...
May 25, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28697908/sperm-donor-conception-and-disclosure-to-children-a-10-year-retrospective-follow-up-study-of-parental-attitudes-in-one-french-center-for-the-study-and-preservation-of-eggs-and-sperm-cecos
#6
Thierry Lassalzede, Marine Paci, Jocelyne Rouzier, Sophie Carez, Audrey Gnisci, Jacqueline Saias-Magnan, Carole Deveze, Jeanne Perrin, Catherine Metzler-Guillemain
OBJECTIVE: To evaluate the percentage of parents in one French center for the study and preservation of eggs and sperm who disclose their use of donated spermatozoa to their children. DESIGN: A questionnaire survey of couples who had a child using donated spermatozoa. SETTING: University hospital laboratory. PATIENT(S): One hundred five couples. INTERVENTION(S): Questionnaire sent by mail. MAIN OUTCOME MEASURE(S): The percentage of parents who disclose their use of donated spermatozoa to their child...
July 8, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28697393/same-medicine-different-reasons-comparing-women-s-bodily-experiences-of-producing-eggs-for-pregnancy-or-for-profit
#7
Rene Almeling, Iris L Willey
Women doing in vitro fertilization (IVF) to have a child describe it as painful and emotionally draining. Egg donors undergo the same medical regimen for a different reason - to produce eggs for another woman in exchange for thousands of dollars - and describe it as quick and relatively painless. Medical researchers typically compare bodily responses by variables such as gender, age, and health status. We use the case of "egg production" to propose a new factor that may be an important source of variation in bodily experience: an individual's reason for undergoing the medical intervention in the first place...
June 22, 2017: Social Science & Medicine
https://www.readbyqxmd.com/read/28683668/kinship-identities-in-the-context-of-uk-maternal-spindle-transfer-and-pronuclear-transfer-legislation
#8
Calum MacKellar
In the discussions leading up to the enactment of the UK Human Fertilisation and Embryology (Mitochondrial Donation) Regulations 2015, it was repeatedly emphasised, by many commentators, that maternal spindle transfer (MST) and pronuclear transfer (PNT) did not give rise to children who could be considered as having three or more parents. This was because it was argued that only the genetic material found in the chromosomes should be considered as the determining factor for the formation of parent-child relationships and the resulting kinship identities...
July 6, 2017: New Bioethics: a Multidisciplinary Journal of Biotechnology and the Body
https://www.readbyqxmd.com/read/28643569/iron-overload-directly-affecting-the-ovaries-in-a-patient-with-diamond-blackfan-anaemia-a-case-report
#9
Mariano Mascarenhas, Victoria Rawnsley, Adam Balen
Iron is a 'one-way' element and the primary point of regulation of body iron stores is at the level of intestinal iron absorption. Repeated blood transfusions for congenital anaemias bypass this regulatory checkpoint and inevitably lead to iron overload in the long-term. Iron overload causes multi-organ dysfunction of the heart, liver, pancreas and joints. It also causes reproductive toxicity primarily through its damaging effect on the anterior pituitary leading to hypogonadotrophic hypogonadism. Another less understood mechanism of reproductive toxicity is direct gonadal damage of excess free iron...
June 23, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28635412/gamete-donors-reasons-for-and-expectations-and-experiences-of-registration-with-a-voluntary-donor-linking-register
#10
Eric Blyth, Marilyn Crawshaw, Lucy Frith, Olga van den Akker
This paper reports on a study of the views and experiences of 21 sperm donors and five egg donors registered with UK DonorLink (UKDL), a voluntary DNA-based contact register established to facilitate contact between adults who wish to identify and locate others to whom they are genetically related following donor conception. Specifically, the paper examines donors' reasons for searching for, or making information about themselves available to donor-conceived offspring. Their expectations of registration with UKDL, experiences of being registered and finally, the experiences of those who had contacted donor-conceived offspring and other genetic relatives are investigated...
February 21, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28635408/assisted-reproductive-technologies-and-the-iranian-community-attitude-towards-infertility
#11
Aliyar Ahmadi, Sara Bamdad
Since the late 1990s, assisted reproductive technologies (ARTs) have been legitimized in Iran through an official religious endorsement. Iran, under the dominant authority of the Shia sect, is now the most enthusiastic adopter of ARTs in the Muslim world, permitting all forms of treatments, including third party donation. This study examined the public perception of assisted conception and its influence on the adoption of these methods in Iran. The study was questionnaire-based and conducted in 2012 in Shiraz, the most populated city in the south of Iran...
February 7, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28609392/the-role-of-hormone-therapy-in-the-management-of-severe-postpartum-depression-in-patients-with-turner-syndrome
#12
Alison K Shea, Wendy Wolfman
OBJECTIVE: Premature ovarian failure associated with Turner syndrome presents clinicians with a vast range of health concerns, including infertility, cardiovascular disease, and decreased bone mineral density, in addition to psychological sequelae. Hormone therapy is paramount in managing these complications, but the additional needs in the postpartum period for those who are able to carry out a successful pregnancy have not been described. METHODS: We present a case of severe postpartum depression (PPD) with psychotic features in a patient with Turner syndrome, which presented at 4 weeks after the birth of her first child via egg donation RESULTS:: We describe the case of a previously well 32-year-old patient with an 46 X, i(Xq) karyotype, who went through a 4-week intensive inpatient treatment course for PPD, requiring electroconvulsant therapy for persistent infanticidal and suicidal ideation...
June 12, 2017: Menopause: the Journal of the North American Menopause Society
https://www.readbyqxmd.com/read/28594091/contingent-maternities-maternal-claims-making-in-third-party-reproduction
#13
Katherine M Johnson
The new reproductive technologies have significantly impacted definitions of motherhood. Historically, mothers were defined through the act of giving birth, but egg donation, embryo donation, and surrogacy disrupt this. Now multiple women can potentially claim maternity through gestational, genetic, legal, and social ties. Although there is some legal precedent for designating parentage, there is no simple solution to identify the 'true' mother. I address maternal claims-making in third party reproduction via a content analysis of US patient literature for infertile women...
June 8, 2017: Sociology of Health & Illness
https://www.readbyqxmd.com/read/28561018/maternal-heterozygous-nlrp7-variant-results-in-recurrent-reproductive-failure-and-imprinting-disturbances-in-the-offspring
#14
Lukas Soellner, Matthias Begemann, Franziska Degenhardt, Annegret Geipel, Thomas Eggermann, Elisabeth Mangold
It has been shown previously that homozygous and compound-heterozygous variants affecting protein function in the human NLRP genes impact reproduction and/or fetal imprinting patterns. These variants represent so-called 'maternal effect mutations', that is, although female variant carriers are healthy, they are at risk of reproductive failure, and their offspring may develop aberrant methylation and imprinting disorders. In contrast, the relevance to reproductive failure of maternal heterozygous NLRP7 variants remains unclear...
August 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28549399/a-systematic-review-investigating-psychosocial-aspects-of-egg-sharing-in-the-united-kingdom-and-their-potential-effects-on-egg-donation-numbers
#15
Timothy Bracewell-Milnes, Srdjan Saso, Hossam Abdalla, Meen-Yau Thum
This review aims to provide an up-to-date knowledge of the psychosocial aspects of egg donation from the perspectives of the egg share donor and their recipient. It explores the motives, experiences and attitudes of egg sharers and their views towards donor anonymity and disclosure. Conclusions are made on how these findings can guide clinical practice and improve egg sharing numbers. A systematic search of peer-reviewed journals of four computerized databases was undertaken. Eleven studies were included in the review...
May 26, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28533904/-this-is-where-it-all-started-the-pivotal-role-of-plc%C3%AE-within-the-sophisticated-process-of-mammalian-reproduction-a-systemic-review
#16
Itai Gat, Raoul Orvieto
Mammalian reproduction is one of the most complex and fascinating biological phenomenon, which aims to transfer maternal and paternal genetic material to the next generation. At the end of oogenesis and spermatogenesis, both haploid gametes contain a single set of chromosomes ready to form the zygote, the first cell of the newly developing individual. The mature oocyte and spermatozoa remain in a quiescent state, during which the oocyte is characterized by nuclear and cytoplasmic arrest, while the spermatozoa necessitates further maturation within the epididymis and female reproductive track prior to egg fertilization...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28473127/long-term-breast-cancer-risk-following-ovarian-stimulation-in-young-egg-donors-a-call-for-follow-up-research-and-informed-consent
#17
Jennifer Schneider, Jennifer Lahl, Wendy Kramer
In the USA and other countries, oocyte donation is gaining increasing importance. Although sufficient data exist on procedure-associated short-term risks for oocyte donors, such as ovarian hyperstimulation syndrome, long-term follow-up studies of egg donors are lacking and their health risks are unknown. The lack of information may be misleadingly interpreted as lack of risk. Long-term hormone replacement therapy is recognized as a risk factor for breast cancer; the breast cancer risk of ovarian stimulation for egg donors is unknown but is a possibility...
May 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28463912/dna-genotyping-of-nonmolar-donor-egg-pregnancies-with-abnormal-villous-morphology-allele-zygosity-patterns-prevent-misinterpretation-as-complete-hydatidiform-mole
#18
Nancy M Joseph, Caryll Pineda, Joseph T Rabban
DNA genotyping is the gold standard diagnostic test to distinguish hydatidiform moles from nonmolar but morphologically abnormal products of conception (POC). The test is based on comparison of alleles at 15 short tandem repeat loci in the chorionic villi of the POC to those in the maternal decidual tissue. If alleles in the POC are not present in the decidua, then the most concerning interpretation is that the POC has a paternal uniparental genome diagnostic of a complete hydatidiform mole (CHM). However, a nonmolar pregnancy from a donated egg would also appear the same because the maternal genome of the POC would match that of the maternal donor, not that of the decidua of the individual carrying the pregnancy...
April 29, 2017: International Journal of Gynecological Pathology
https://www.readbyqxmd.com/read/28421498/chapter-14-establishing-an-oocyte-cryobank-network
#19
James Graham, Josh Lim, Michael Tucker
Improvements in oocyte cryopreservation has prompted wider acceptance of this technology leading to its use for several reasons. Notably, in addition to elective and medically driven reasons for oocyte cryostorage for fertility preservation, donor oocyte cryobanking is beginning to gain traction, potentially replacing fresh oocyte donation in assisted reproduction. Donor "egg banking," while not totally analogous to donor sperm banking, does provide strong benefits in terms of scheduling flexibility and improved clinical efficiencies, while providing a wider immediate inventory choice...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28333245/euploidy-rates-in-donor-egg-cycles-significantly-differ-between-fertility-centers
#20
S Munné, M Alikani, L Ribustello, P Colls, Pedro A Martínez-Ortiz, D H McCulloh
Study question: Do external factors affect euploidy in egg donor cycles? Summary answer: The study demonstrates that during human assisted reproduction, embryonic chromosome abnormalities may be partly iatrogenic. What is known already: Chromosome abnormalities have been linked in the past to culture conditions such as temperature and Ph variations, as well as hormonal stimulation. Those reports were performed with older screening techniques (FISH), or ART methods no longer in use, and the subjects studied were not a homogeneous group...
April 1, 2017: Human Reproduction
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