Abstract：
:Construction of artificial gametes may be made possible by transferring somatic cells into enucleated oocytes and inducing chromosomal halving of their nuclei. This study examines the possibility of constructing viable human gametes, and their potential for participation in normal fertilization. Spare germinal vesicle-stage oocytes were donated by consenting patients undergoing intracytoplasmic sperm injection (ICSI). Approximately 62% of in-vitro matured oocytes survived enucleation and subsequent cumulus cell injection. Following micromanipulation and subsequent activation, about 40% of the reconstituted oocytes yielded two pronuclear-like entities. This was not accompanied by extrusion of a polar body, but resulted in the formation of two 'putative haploid' pronuclei. Therefore selective removal of a female pronucleus marker was required to restore a balanced ploidy. Male pronuclei were identified by association with sperm mitochondria. Additional pronuclei were then removed, allowing further cleavage. Zygotes derived were 'putatively haploid' in approximately 38% of cases with a limited number of chromosomes assessed. However, on karyotypic analysis, blastomeres isolated from cleaving embryos showed a chaotic distribution of chromosomes. Oocytes could induce 'putative haploidization' of transplanted somatic cell nuclei independently of donor cell gender. Fertilization of artificial oocytes was followed by embryonic cleavage despite blastocyst development and chromosomal content possibly being compromised.
journal_name
Reprod Biomed Onlinejournal_title
Reproductive biomedicine onlineauthors
Takeuchi T,Neri QV,Palermo GDdoi
10.1016/s1472-6483(10)60838-3keywords:
subject
Has Abstractpub_date
2005-09-01 00:00:00pages
309-18issue
3eissn
1472-6483issn
1472-6491pii
S1472-6483(10)60838-3journal_volume
11pub_type
杂志文章abstract：:In human embryos, blastomeres differentiate into trophectoderm (TE) cells and inner cell mass (ICM) cells of blastocysts. Although morphologically indistinguishable, blastomeres at early cleavage stages are likely to undergo changes on a molecular level that make them destined to become ICM or TE cells. While the tran...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)61618-5
更新日期：2002-09-01 00:00:00
abstract：:The Bertarelli Foundation aims to promote understanding of infertility. Two international conferences in 1999 and 2002 have highlighted the importance of multiple gestations, which have been recognized as a major problem associated with assisted reproductive technologies and ovulation induction therapies. For this rea...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)62242-0
更新日期：2007-01-01 00:00:00
abstract：:This commentary discusses the decision in S.H. and Others v. Austria from a political theoretical and bioethical perspective. I focus on the opinion's discussion of what I call 'circumvention tourism', travelling abroad for the purpose of circumventing domestic prohibitions, especially as to medical services. The majo...
journal_title：Reproductive biomedicine online
pub_type： 评论,杂志文章
doi：10.1016/j.rbmo.2012.07.009
更新日期：2012-12-01 00:00:00
abstract：:In male infertility, complementary treatment with antioxidant-containing food supplements quadruples the spontaneous pregnancy rate and reduces the cost per pregnancy by 60%. ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2011.05.009
更新日期：2011-09-01 00:00:00
abstract：:Endocrine-disrupting chemicals are substances present in the environment that can interfere with normal hormonal balance and thus exert potentially adverse health effects on the human organism. Male reproductive system development and function may be susceptible to the effects of such environmental toxicants. Bispheno...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/j.rbmo.2013.02.005
更新日期：2013-05-01 00:00:00
abstract：RESEARCH QUESTION:To determine whether there is a risk of localized Zika virus (ZIKV) infection in the upper genital tract, specifically the oocytes, follicular fluids and endometrium, in exposed and/or recently infected reproductive-age women. ZIKV is an Aedes mosquito-borne Flavivirus that can lead to birth defects a...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2019.05.013
更新日期：2019-10-01 00:00:00
abstract：:Traceability of cells during IVF is a fundamental aspect of treatment, and involves witnessing protocols. Failure mode and effects analysis (FMEA) is a method of identifying real or potential breakdowns in processes, and allows strategies to mitigate risks to be developed. To examine the risks associated with witnessi...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2015.06.018
更新日期：2015-10-01 00:00:00
abstract：:Glutathione S-transferases are a family of multifunctional proteins involved in intracellular transport processes and drug detoxication. In rats, these enzymes are dimeric proteins, and exist as cytosolic and microsomal proteins. The affinity purified rat testicular glutathione S-transferases are comprised of four sub...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60499-3
更新日期：2004-01-01 00:00:00
abstract：:Due to inherent differences between gonadotrophin-releasing hormone (GnRH) antagonists and agonists, their late effect on ovarian steroidal production during the luteal phase of IVF cycles may differ. The aim of this study was to characterize and compare the luteal phase hormonal profile after the use of GnRH antagoni...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,随机对照试验
doi：10.1016/s1472-6483(10)60976-5
更新日期：2006-01-01 00:00:00
abstract：:Advances in preimplantation genetic diagnosis (PGD) are occurring worldwide. New clinics specializing in this approach to the control of disease genes or imbalanced chromosome numbers in human preimplantation embryos continue to increase. One exception is Japan, where the Japanese Society of Obstetrics and Gynecology ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)62138-4
更新日期：2004-09-01 00:00:00
abstract：:Tubal pathology is a common cause of subfertility. Identifying risk factors for tubal pathology in the medical history is important to distinguish between those couples who benefit from early tubal patency tests and those in whom presence of tubal pathology is less likely and delaying tubal tests is justified. This st...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60589-5
更新日期：2008-02-01 00:00:00
abstract：:More than 17,000 intrauterine insemination (lUI) cycles were analysed retrospectively with respect to outcome according to differing aetiologies of infertility. The quantity and motility of spermatozoa in the final preparation used for insemination had a positive effect on the outcome, as classically observed in the p...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60223-4
更新日期：2008-09-01 00:00:00
abstract：:Myomectomy is the most frequent reproductive surgery to preserve, improve fertility, or both. The present study was designed to assess the safety and efficacy of minilaparotomy for myomectomy through a systematic review of randomized and non-randomized controlled trials with a meta-analysis. All available studies comp...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,meta分析,评审
doi：10.1016/j.rbmo.2015.01.013
更新日期：2015-05-01 00:00:00
abstract：RESEARCH QUESTION:The study aimed to evaluate the associations of endocrine and ultrasound characteristics with metabolic syndrome in women with polycystic ovary syndrome (PCOS), and whether these associations were modified by body mass index (BMI). DESIGN:The study was a secondary analysis of baseline data from a ran...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2019.06.014
更新日期：2019-11-01 00:00:00
abstract：:It has been suggested that during the past five decades human sperm counts have declined and the incidence of testicular cancer, hypospadias and cryptorchidism has increased. Furthermore, geographical differences, with respect to these markers of male reproductive function, have been reported. According to a recent hy...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/s1472-6483(10)60530-5
更新日期：2007-12-01 00:00:00
abstract：RESEARCH QUESTION:Does the quality of transferred embryos have an impact on the rate of congenital malformations in IVF/intracytoplasmic sperm injection (ICSI)-conceived babies? DESIGN:Retrospective cohort study involving 6637 pregnancies of ≥20 weeks' gestation from women undergoing embryo transfer with a single Day ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2019.07.035
更新日期：2019-12-01 00:00:00
abstract：:Multiple pregnancies are a serious adverse event of IVF treatment. Several strategies have been developed to improve embryo selection and embryo developmental potential to increase pregnancy rates without increasing the risk of multiple pregnancies. The only way to effectively solve this problem is to reduce the numbe...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/S1472-6483(10)61459-9
更新日期：2007-01-01 00:00:00
abstract：:Intracytoplasmic morphologically selected sperm injection (IMSI) involves the use of differential interference contrast microscopy at high magnification (at least ·6300) to improve the observation of live human spermatozoa (particularly by showing sperm head vacuoles that are not necessarily seen at lower magnificatio...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,评审
doi：10.1016/j.rbmo.2013.09.019
更新日期：2014-01-01 00:00:00
abstract：RESEARCH QUESTION:Does obesity affect endometrial gene expression in women with endometriosis, specifically women with stage I disease? DESIGN:Differential gene expression analysis was conducted on endometrium from women with and without endometriosis (n = 169). Women were diagnosed after surgical visualization and st...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2020.03.015
更新日期：2020-07-01 00:00:00
abstract：:This study tested in-vitro maturation (IVM) as a complementary strategy to improve the mature oocyte yield of breast cancer patients undergoing ovarian stimulation for fertility preservation. Secondary analysis of prospectively collected data is performed for 32 breast cancer patients undergoing oocyte or embryo cryop...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2010.01.012
更新日期：2010-05-01 00:00:00
abstract：RESEARCH QUESTION:What are the optimal values of maternal age and body mass index (BMI), paternal age and BMI, number of oocytes retrieved, and serum AMH concentrations for cumulative live birth rate (CLBR) in IVF and embryo transfer (IVF-ET)? DESIGN:This retrospective cohort study included 9494 women who underwent th...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2020.01.024
更新日期：2020-05-01 00:00:00
abstract：:This study reports two clinical pregnancies and one live birth following the transfer of vitrified blastocysts developed from oocytes with neither zona pellucida nor corona cells. Two zona-free oocytes obtained from two patients of advanced maternal age undergoing minimal stimulation were normally fertilized after int...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2010.04.033
更新日期：2010-10-01 00:00:00
abstract：RESEARCH QUESTION:A close association between Kisspeptin-1 (KISS-1) and reproductive physiology has been reported, but the results on circulatory KISS-1 are ambiguous in patients with polycystic ovary syndrome (PCOS). A systematic review and meta-analysis were conducted to evaluate the association between KISS-1 and PC...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章,meta分析
doi：10.1016/j.rbmo.2019.04.018
更新日期：2019-10-01 00:00:00
abstract：:To investigate the development of follicles and incidence of apoptosis in vitrified cultured mouse ovaries in the presence and absence of Kit ligand, 1-week-old mouse ovaries were cultured in the presence or absence of Kit ligand for 7 days. Development and function of ovarian follicles was evaluated by histology and ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2015.01.009
更新日期：2015-05-01 00:00:00
abstract：:Time-lapse analysis of tripronucleated zygotes obtained in ICSI cycles showed that 75.4% cleaved into embryos. These embryos subsequently demonstrated slower developmental kinetics than normally fertilized embryos. ...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2014.01.009
更新日期：2014-05-01 00:00:00
abstract：:Over the past decade, the number of reported live births resulting from oocyte cryopreservation has rapidly increased. To appreciate the true number of children born, verified live births were tabulated and assessed. A literature search was performed; authors were then contacted to verify birth outcomes and provide up...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60025-9
更新日期：2009-06-01 00:00:00
abstract：:This retrospective study investigated whether mid-luteal serum progesterone concentrations are associated with live birth rates in women with WHO group II anovulatory infertility undergoing ovulation induction. Data were from women (n=335) stimulated with gonadotrophins using a low-dose step-up protocol, of which wome...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2011.01.006
更新日期：2011-05-01 00:00:00
abstract：RESEARCH QUESTION:What is the prevalence of triplet and quadruplet pregnancies after single embryo transfer (SET) in Japan. DESIGN:A retrospective observational study was conducted on 274,605 pregnancies after 937,848 SET cycles in registered assisted reproductive technology (ART) data from the Japanese ART national r...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2019.11.008
更新日期：2020-03-01 00:00:00
abstract：:A preliminary study was conducted on health of children conceived after preimplantation genetic screening and diagnosis (PGD). Forty-nine children were assessed with 66 matched naturally conceived (NC) controls. Primary outcome was neurodevelopmental screening, and secondary outcomes were evidence of other health prob...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/s1472-6483(10)60599-8
更新日期：2008-03-01 00:00:00
abstract：:Anti-Müllerian hormone (AMH) has emerged as an important marker of ovarian reserve. Its variation throughout the cycle, however, may still be a matter of debate. The objective of this study was to re-evaluate the intra-cycle fluctuations of AMH in individuals in a prospective clinical study with focus on the age-relat...
journal_title：Reproductive biomedicine online
pub_type： 杂志文章
doi：10.1016/j.rbmo.2012.02.023
更新日期：2012-06-01 00:00:00
