Abstract:
PURPOSE:To determine the pattern of expression of parathyroid hormone-related protein (PTHrP) and its receptor, parathyroid hormone receptor 1 (PTHR1), in mouse embryos in different stages of preimplantation development. METHODS:Embryos were cultured from the pronuclear zygote stage and harvested as 2-cell, 4-cell and 8-cell embryos, morulae and blastocysts. RT-PCR was carried out on mRNAs of these and of trophoblast outgrowths for detection of PTHrP and PTHR1. Whole mounted embryos intact or stripped of zonae pellucidae were immunofluorescently stained for PTHrP and PTH receptor and observed with confocal microscopy. RESULTS:PTHrP mRNA was present in the pronuclear zygote, not present in 2-cell, 4-cell and uncompacted 8-cell embryos, present in the 8-cell compacting embryo, and not detected in 16-cell morulae or blastocysts. The mRNA was present in trophoblasts growing on fibronectin beds. mRNA for PTHR1 was detected in the pronuclear zygote, then undetected until the compacted 8-cell stage and thereafter. PTH receptor protein was observed in 2-cell embryos, morulae and in the inner cell mass and trophectoderm of blastocysts. PTHrP was observed dispersed in the cytoplasm of 2-cell, 4-cell and uncompacted 8-cell embryos, and in distinct foci near the nuclei of morulae. In blastocysts, PTHrP appeared on the apical surface of only trophoblast cells which had extruded from the zona pellucida. Fully hatched blastocysts expressed the protein on the apical side of all trophoblasts. When morulae were prematurely stripped of their zonae, PTHrP was observed on the embryos' outer surface. CONCLUSIONS:PTHrP protein is expressed throughout early embryo development, and its receptor PTHR1 is expressed from the morula stage. Embryo hatching is associated with translocation of PTHrP to the apical plasma membrane of trophoblasts. PTHrP may thus have autocrine effects on the developing blastocyst.
journal_name
J Assist Reprod Genetjournal_title
Journal of assisted reproduction and geneticsauthors
Erbach GT,Biggers JD,Manning PC,Nowak RAdoi
10.1007/s10815-013-0094-ysubject
Has Abstractpub_date
2013-08-01 00:00:00pages
1009-15issue
8eissn
1058-0468issn
1573-7330journal_volume
30pub_type
杂志文章abstract:PURPOSE:The aim of the present study is to investigate role of FoxO transcription factors in preimplantation embryo development by knocking down FoxO1, FoxO3, and FoxO4 genes and also to assess cell cycle arrest related proteins, p53 and p21, and apoptosis-related proteins, fas ligand (FASL), and cleaved caspase 3. ME...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-019-01555-1
更新日期:2019-10-01 00:00:00
abstract:PURPOSE:This study investigates the relationship between human tubal epithelial cell growth characteristics and mouse embryonic development to determine which cellular requirements should be preferentially provided in a coculture system. METHODS:Cell growth and viability were assessed for 5 days in alpha-minimal essen...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/BF02066176
更新日期:1996-05-01 00:00:00
abstract:PURPOSE:The aim was to evaluate the effect of aspirin on pregnancy and implantation rates in an unselected group of patients undergoing intracytoplasmic sperm injection (ICSI). METHODS:Two hundred and seventy-nine patients were randomized to receive 80 mg of aspirin (n = 139) or no treatment (r = 136) starting from th...
journal_title:Journal of assisted reproduction and genetics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1023/a:1026491426423
更新日期:2000-11-01 00:00:00
abstract:PURPOSE:Several time-lapse imaging (TLI) systems for non-invasive continuous monitoring of developing embryos are currently available. The present study explored the prevalence, means of acquisition, and clinical application of TLI systems in USA in vitro fertilization (IVF) laboratories. METHODS:An online cross-secti...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-017-0964-9
更新日期:2017-09-01 00:00:00
abstract:PURPOSE:To compare the clinical outcome of IVF treatment after pituitary suppression with two different oral contraceptives (OCs). METHODS:65 patients who received IVF treatment was classified into 2 groups based on the difference of OCs they used for pituitary suppression before ovarian hyperstimulation. Group 1 incl...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-006-9056-y
更新日期:2006-07-01 00:00:00
abstract:PURPOSE:Male carriers of an X-autosome translocation are generally infertile, regardless of the position of the breakpoint on the X chromosome while the pathogenicity of Xp22.3 subtelomeric duplications is under debate. To shed light into this controversy, we present a rare case, of an azoospermic male with no other si...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-019-01405-0
更新日期:2019-04-01 00:00:00
abstract:PURPOSE:To evaluate the influence of sperm characteristics on the outcome of infertility treatment using intrauterine insemination (IUI). METHODS:Retrospective study of 431 infertility couples who underwent 1007 IUI treatment cycles from June 1999 to October 2002. Sperm parameters before and after preparation for IUI ...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1023/b:jarg.0000031246.76666.f6
更新日期:2004-05-01 00:00:00
abstract:PURPOSE:Fertility treatment in women aged ≥40 year old remains difficult and controversial. All available studies in older women report results of one specific method of ART, i.e. IUI, IVF/ICSI or oocyte donation, and success rates are always published per attempt but never per patient. Randomized studies are not avail...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-013-0085-z
更新日期:2013-11-01 00:00:00
abstract:PURPOSE:To generate novel, objective variables that resemble embryo quality and relate them to ongoing implantation, using multilevel imaging of single-transferred embryos. METHODS:Retrospective analysis of multilevel images of 659 day 3 single-transferred embryos. Each embryo was photographed on seven different level...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-013-9970-8
更新日期:2013-04-01 00:00:00
abstract:PURPOSE:The goals of this study are to analyze the clinical pregnancy rate as a function of the pre-intracytoplasmic sperm injection (ICSI) oocyte spindle angle and determine factors which can be associated with different spindle angles, if clinically relevant. METHODS:Fifty-eight patients, who underwent their first I...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-017-0890-x
更新日期:2017-05-01 00:00:00
abstract:PURPOSE:Sperm play an essential role in embryonic genome activation and embryonic progression to blastocyst. In the present work, we focus on development of embryos created as a result of ICSI with testicular or epididymal sperm from azoospermic males and compare this to outcomes from normospermic males. The objective ...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-018-1183-8
更新日期:2018-07-01 00:00:00
abstract::We discuss the hypothesis that AMH is an intraovarian regulator that inhibits follicular atresia within the human ovary. Several indirect lines of evidence derived from clinical and basic science studies in a variety of different patient populations and model systems collectively support this hypothesis. Evidence pres...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章,评审
doi:10.1007/s10815-014-0328-7
更新日期:2014-11-01 00:00:00
abstract:PURPOSE:To identify characteristics of female patients and of semen that were associated with live birth following intrauterine insemination (IUI). METHODS:Retrospective review of medical and laboratory results from 533 women who underwent IUI with partner's sperm from 1993 through 1995. RESULTS:Among 1728 cycles, 11...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1023/a:1009402214820
更新日期:2000-05-01 00:00:00
abstract:PURPOSE:The basic semen parameters seem to have a limited predictive value in male fertility. Could other objective sperm analyses be helpful in the choice of the most adapted assisted procreation technique? METHODS:This study concerns 78 infertile couples with insemination failures. For each semen, 21 objective param...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/BF02765835
更新日期:1997-07-01 00:00:00
abstract:PURPOSE:To evaluate the association between phenotype and follicle stimulating hormone receptor (FSHR) genotype in women with ovarian dysfunction and patients with "poor response" to gonadotropin stimulation of ovulation. METHODS:FSHR gene SNPs were analyzed by PCR and RFLP. "Poor responders" (ovarian dysfunction) gro...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-008-9279-1
更新日期:2009-01-01 00:00:00
abstract:PURPOSE:To develop inhouse made (IHM) embryo culture medium with a Multipurpose Isolator and compare the embryo development in a prospective randomized study with commercial media. METHODS:Fertilization by intracytoplasmic single sperm injection (ICSI) of Metaphase II oocytes obtained after 96 controlled ovarian hyper...
journal_title:Journal of assisted reproduction and genetics
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1007/s10815-004-7525-8
更新日期:2004-11-01 00:00:00
abstract:PURPOSE:To investigate interactions on gestational age among two environmental risk factors and four maternal genetic polymorphisms: organic solvents, passive smoking, CYP1A1 rs4646903 (MspI), EPHX1 rs2234922 (His139Arg), GSTT1 and PON2 rs12026 (Ala148Gly). METHODS:A pregnant women cohort was conducted at Beijing Yans...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-014-0256-6
更新日期:2014-07-01 00:00:00
abstract:PURPOSE:To evaluate the effect of autologous endometrial coculture in patients (less than 36 years old) with a history of a single IVF failed cycle associated with poor quality embryos. METHODS: DESIGN:Controlled clinical study. SETTING:University-based in vitro fertilization center. PATIENTS:Twenty-six patients wi...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1023/a:1016062508127
更新日期:2002-07-01 00:00:00
abstract::The understanding of the embryo's nutrient requirements and physiology has led to the development of more physiological culture media, capable of supporting acceptable levels of human blastocyst development in vitro. The success of such media can be attributed to catering to the embryo's changing nutrient requirements...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1023/a:1022543901455
更新日期:1998-09-01 00:00:00
abstract:PURPOSE:This prospective study was designed to investigate whether anti-Müllerian hormone (AMH) levels at basal and ovulation triggering day are associated with ovarian response and pregnancy outcome for in vitro fertilization (IVF). METHOD:60 infertility women undergoing IVF were prospectively studied. On day 3 of th...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-009-9332-8
更新日期:2009-07-01 00:00:00
abstract:PURPOSE:The etiology of maternal aging, a common cause of female factor infertility and a rate-limiting step in vitro fertilization (IVF) success, remains still unclear. Proteomic changes responsible for the impaired successful pregnancy outcome after IVF with aged blastocysts have not been yet evaluated. The objective...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-016-0842-x
更新日期:2017-02-01 00:00:00
abstract:PURPOSE:The purpose of this study was to investigate the effect of male and female serum supplementation on the in vitro development of mouse embryos beyond the blastocyst stage until the outgrowth stage since the latter may be related to the nidation of the embryo. We also studied the effect of EGF addition on embryo ...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/BF02066499
更新日期:1996-11-01 00:00:00
abstract:PURPOSE:The aim of this analysis was to study whether monozygotic twinning (MZT) events occur in clusters after IVF and, if so, to explore possible explanations for this clustering. METHODS:This is a retrospective cohort study carried out in a single, large university-affiliated reproductive medicine practice. Medical...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-015-0616-x
更新日期:2016-01-01 00:00:00
abstract:RESEARCH QUESTION:Granulosa cells (GCs) surrounding oocytes are crucial for follicular growth, oocyte development, ovulation, and luteinization under the dynamic co-stimulation of follicle stimulating hormone (FSH) and luteinizing hormone (LH). This study aimed to investigate the effect of LH levels on GCs in preovulat...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-021-02066-8
更新日期:2021-01-14 00:00:00
abstract:PURPOSE:The purpose of this study is to determine if baseline antral follicle assessment may serve as additional information in predicting in vitro fertilization outcome. METHODS:Prospective, descriptive preliminary study of in vitro fertilization outcome. From July 1998 to July 1999, 224 patients underwent antral fol...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1023/a:1009424407082
更新日期:2001-03-01 00:00:00
abstract:PURPOSE:The study aimed to investigate key intrafollicular prognostic factors among various cytokines and angiogenic molecules for prediction of mature oocytes and good-quality embryos in women with endometriosis undergoing in vitro fertilization (IVF). METHODS:Paired follicular fluid and serum samples were collected ...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-016-0782-5
更新日期:2016-10-01 00:00:00
abstract:PURPOSES:To investigate the frequencies of AZF microdeletions and chromosomal abnormalities in infertile men from Northeastern China. Moreover, to compare the prevalence of these abnormalities with other countries and regions in the world. METHODS:305 infertile men were enrolled. A complete semen analysis and reproduc...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-010-9420-9
更新日期:2010-07-01 00:00:00
abstract:PURPOSE:The aim was to assess the fertilizing capacity of spermatozoa cool-preserved in electrolyte-free (EF) solution. METHODS:Mouse spermatozoa were cool-preserved in EF solution and the acrosomal status of the spermatozoa was compared before and after preservation using chlortetracycline stain. Mouse oocytes were i...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1023/a:1009449926015
更新日期:2000-08-01 00:00:00
abstract:PURPOSE:The aim of this study was to compare the levels of hyperglycosylated human chorionic gonadotropin (hCG-H) secreted from balanced and unbalanced human embryos. METHODS:Single-step culture media samples from 155 good quality embryos, derived from 90 good prognosis patients undergoing intracytoplasmic sperm injec...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-020-01776-9
更新日期:2020-06-01 00:00:00
abstract:PURPOSE:To compare morphokinetic parameters and quality of embryos derived from GnRH antagonist ICSI cycles triggered either with GnRH agonist or standard hCG between matched groups of patients. METHODS:Morphokinetic parameters of embryos derived from matched first GnRH antagonist ICSI cycles triggered by GnRH agonist...
journal_title:Journal of assisted reproduction and genetics
pub_type: 杂志文章
doi:10.1007/s10815-020-01953-w
更新日期:2020-11-01 00:00:00