Abstract：
PURPOSE:Methylation of sperm DNA is impaired in many infertile men potentially adversely effecting reproductive outcomes. In somatic cells oxidative damage to DNA and hyperhomocysteinaemia are linked with DNA hypomethylation. The objective of this study was to investigate if these pathologies also impair sperm DNA methylation. METHODS:The relationship between sperm DNA quality, oxidative stress and serum homocysteine was analysed at study entry and after 3 months of antioxidant treatment. RESULTS:Overall a significant negative correlation was observed between sperm DNA methylation and sperm DNA fragmentation, as well as seminal reactive oxygen species (ROS) production. Sperm DNA methylation was not significantly related to serum homocysteine concentrations. Administration of an antioxidant supplement produced a significant fall in seminal ROS levels and sperm DNA fragmentation, while increasing sperm DNA methylation. CONCLUSIONS:These results suggest that oxidative stress related damage to sperm DNA impedes the process of methylation, while antioxidant supplementation appears to have the potential to reduce DNA damage and normalize sperm DNA methylation.
journal_name
J Assist Reprod Genetjournal_title
Journal of assisted reproduction and geneticsauthors
Tunc O,Tremellen Kdoi
10.1007/s10815-009-9346-2subject
Has Abstractpub_date
2009-09-01 00:00:00pages
537-44issue
9-10eissn
1058-0468issn
1573-7330journal_volume
26pub_type
杂志文章abstract：PURPOSE:This study measured serum early pregnancy factor (EPF) in pregnant red deer (Cervus elaphus) and ascertained whether EPF synthesis is associated with implantation. METHODS:Serial serum samples were taken from mated hinds up to 42 days postconception and analyzed for EPF activity using the rosette inhibition te...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF02765751
更新日期：1997-01-01 00:00:00
abstract：PURPOSE:Our purpose was to compare the number and quality of spermatozoa recover following the standard centrifugation method with those after pulsing the relative centrifugal field during centrifugation. METHODS:A prospectively controlled in vitro study using ejaculates from 10 healthy sperm donors was undertaken. Nu...
journal_title：Journal of assisted reproduction and genetics
pub_type： 临床试验,杂志文章
doi：10.1023/a:1020385411769
更新日期：1998-11-01 00:00:00
abstract：:The original version of this article unfortunately contained a mistake. The middle initial of Douglas A. Mata was omitted. The original article has been corrected. ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,已发布勘误
doi：10.1007/s10815-017-1093-1
更新日期：2018-02-01 00:00:00
abstract：PURPOSE:Investigate whether R72P on p53 gene polymorphism has a higher prevalence among women with a history of recurrent implantation failure (RIF) and pregnancy loss (RPL) and its influence in their IVF cycle outcome. MATERIAL AND METHODS:p53 polymorphism R72P has been studied in 181 women. The control group include...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-013-0147-2
更新日期：2014-02-01 00:00:00
abstract：PURPOSE:A pilot study was performed to test the diagnostic value of in vitro DNA fluorescence in oocytes that failed to fertilize after IVF. Ten patients with a cleavage rate less than 20% after IVF were included. RESULTS:Uncleaved oocytes were observed by fluorescence microscopy after incubation with the DNA fluoresc...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF01204255
更新日期：1992-12-01 00:00:00
abstract：PURPOSE:High survival rates and clinical outcomes similar to those from fresh oocytes and blastocysts have been observed with open oocyte vitrification systems. It has been suggested that the extremely fast cooling rates that are only achieved with open systems are necessary for human oocyte and blastocyst vitrificatio...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-016-0748-7
更新日期：2016-09-01 00:00:00
abstract：PURPOSE:To assess the effect of wearing powdered gloves during embryo transfer as compared to un-powdered gloves on the pregnancy outcome of IVF cycles. METHODS:Patients, undergoing embryo transfer procedures, were prospectively randomized into two groups: In the first (group A, n=356) group embryo transfer was perfor...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-008-9285-3
更新日期：2009-01-01 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：PURPOSE:Our purpose was to determine whether immature oocytes could be retrieved under local anesthesia, whether these oocytes would mature and fertilize in vitro, and whether adequate endometrium development could be obtained after hormonal supplementation. METHODS:Ovum pick-up was performed under local anesthesia. I...
journal_title：Journal of assisted reproduction and genetics
pub_type： 临床试验,杂志文章
doi：10.1023/a:1022516806423
更新日期：1999-02-01 00:00:00
abstract：PURPOSE:To assess the effect of assisted hatching (AH) site on the clinical outcomes in vitrified-warmed blastocyst transfer cycles. METHODS:A total of 160 women who underwent vitrified-warmed blastocyst transfer cycles were randomized to either the ICM group (AH performing at the site near the inner cell mess, ICM), ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10815-013-9984-2
更新日期：2013-06-01 00:00:00
abstract：PURPOSE:This study was performed to evaluate whether a lower dose (0.2 mg) of cetrorelix would prevent premature LH surge in patients undergoing controlled ovarian hyperstimulation. METHODS:Controlled ovarian hyperstimulation was carried out in 45 patients, starting on menstrual cycle day 3 with recombinant FSH (r-FSH...
journal_title：Journal of assisted reproduction and genetics
pub_type： 临床试验,杂志文章
doi：10.1007/s10815-006-9054-0
更新日期：2006-06-01 00:00:00
abstract：:The original article unfortunately contained a mistake. In the online version of the paper, the words "MII (metaphase II)-PB1 (1st polar body) complex (MII-PB1 complex)" in table 1 are incorrectly placed. ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 已发布勘误
doi：10.1007/s10815-019-01644-1
更新日期：2019-12-01 00:00:00
abstract：PURPOSE:In in vitro maturation (IVM) cycles primed with human chorionic gonadotropin (hCG), both immature and mature oocytes are retrieved from antral follicles sized 8-12 mm. Using time-lapse microscopy, we compared the morphokinetic behavior of embryos developed from oocytes matured in vivo and in vitro, testing the ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-015-0625-9
更新日期：2016-02-01 00:00:00
abstract：PURPOSE:The importance of the surrounding ovarian stromal cells and extracellular matrix in the development and maturation of follicles has recently gained attention. An aberrant extracellular matrix has been described in ovaries of patients with polycystic ovary syndrome where a more rigid structural environment, poss...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-019-01513-x
更新日期：2019-09-01 00:00:00
abstract：PURPOSE:To study the presence and distribution of genes encoding free radical scavengers in human granulosa cells from primordial and primary ovarian follicles. METHODS:A class comparison study on existing granulosa cell transcriptome from primordial (n = 539 follicles) and primary (n = 261) follicles donated by three...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1240-3
更新日期：2018-10-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to assess the fertilizability of unfertilized aged human oocytes from failed in vitro fertilization (IVF) cycles using SUZI and ICSI. METHODS:A total of 363 oocytes which showed no fertilization after conventional IVF was subjected to assisted fertilization using SUZI or ICSI. The m...
journal_title：Journal of assisted reproduction and genetics
pub_type： 临床试验,杂志文章
doi：10.1007/BF02211724
更新日期：1994-09-01 00:00:00
abstract：OBJECTIVE:This study measured platelet activating factor (PAF) production by rabbit embryos in vitro and ascertained if there is increased PAF production associated with advancing embryonic development. STUDY DESIGN:Two-cell rabbit embryos were recovered from superovulated New Zealand White does and cultured in vitro ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF01213432
更新日期：1993-07-01 00:00:00
abstract：PURPOSE:We investigated whether enzymatically fabricated hyaluronan (HA) microcapsules were feasible for use in the cryopreservation of a small number of sperm. METHODS:HA microcapsules were fabricated using a system of water-immiscible fluid under laminar flow. Three sperm were injected into a hollow HA microcapsule ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-016-0656-x
更新日期：2016-04-01 00:00:00
abstract：PURPOSE:To assesse circulating levels of Anti-Müllerian hormone (AMH) as a predictor of oocyte number and their potential to mature in vitro in both normo-ovulatory (NO) women and in women with Polycystic Ovary Syndrome (PCOS) undergoing in vitro maturation (IVM) treatments. METHODS:We prospectively studied NO women a...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-013-9996-y
更新日期：2013-06-01 00:00:00
abstract：OBJECTIVE:The study investigated the neuropsychological status of women with induced hypoestrogenism. DESIGN:An ABA design was employed in which neuropsychological measures were repeated prior to, during, and after induction of hypoestrogenism with leuprolide acetate. SETTING:The study took place in a medical school ...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF01204441
更新日期：1993-01-01 00:00:00
abstract：PURPOSE:Oocyte competence is critical in success of assisted reproduction. Metabolic signaling between oocyte and cumulus cells within the cumulus-oocyte complex procure oocyte development. This study evaluated the relationship between respirometric activity of cumulus cells and maturity of corresponding oocytes. METH...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1271-9
更新日期：2018-10-01 00:00:00
abstract：PURPOSE:To conduct a prospective randomized study in order to investigate the effect of recombinant HCG (rHCG) on oocyte nuclear and cytoplasm maturity compared to urinary HCG (uHCG), for inducing ovulation in women treated with ICSI for male factor infertility. MATERIALS AND METHODS:We compared 89 patients randomly a...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章,随机对照试验
doi：10.1007/s10815-008-9262-x
更新日期：2008-09-01 00:00:00
abstract：PURPOSE:To evaluate the association of objectively measured physical activity (PA) and sedentary behaviour before and during in vitro fertilization (IVF) with controlled ovarian stimulation (COS) and pregnancy outcomes. METHODS:This longitudinal study involved 107 infertile women undergoing IVF treatment. PA and seden...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-020-01864-w
更新日期：2020-08-01 00:00:00
abstract：PURPOSE:A higher proportion of male offspring has been observed after transferring faster-developing embryos in a number of animal species. Therefore, we evaluated the correlation between the sex ratio of delivered babies and the cleavage stage of transferred embryos in a human IVF-ET program. METHODS:The sex of infan...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/BF02212575
更新日期：1995-10-01 00:00:00
abstract：PURPOSE:To study the effect of α-linolenic acid (ALA) on meiotic maturation, mRNA abundance of apoptosis-related (Bax and Bcl-2) molecules, and blastocyst formation in ovine oocytes. METHODS:A preliminary experiment was conducted to analyze the concentration of ALA in "small" (≤2 mm) and "large" (≥6 mm) follicles usin...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-015-0439-9
更新日期：2015-04-01 00:00:00
abstract：:Artificial intelligence (AI) has been proposed as a potential tool to help address many of the existing problems related with empirical or subjective assessments of clinical and embryological decision points during the treatment of infertility. AI technologies are reviewed and potential areas of implementation of algo...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-020-01950-z
更新日期：2020-11-01 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：PROBLEM:Numerous lines of evidence implicate Apolipoprotein E (Apo E) in lipid metabolism during pregnancy. Hence, a role for its polymorphism has been envisaged in recurrent pregnancy loss (RPL) considering major structural and functional differences between different Apo E genotypes. METHOD OF STUDY:A case control s...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-012-9897-5
更新日期：2013-02-01 00:00:00
abstract：OBJECTIVES:To analyze in detail the fatty acid (FA) composition of follicular fluid (FF) from two-sized follicles at oocyte retrieval and to determine associations of the FAs from large follicles with the woman's age and the response to ovarian stimulation. DESIGN:Observational study. SETTING:University and fertility...
journal_title：Journal of assisted reproduction and genetics
pub_type： 杂志文章
doi：10.1007/s10815-018-1384-1
更新日期：2019-03-01 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
