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https://www.readbyqxmd.com/read/28322098/effect-of-sperm-dna-fragmentation-on-clinical-outcomes-for-chinese-couples-undergoing-in%C3%A2-vitro-fertilization-or-intracytoplasmic-sperm-injection
#1
Lin-Tao Xue, Rui-Xue Wang, Bing He, Wei-Ying Mo, Li Huang, Shi-Kai Wang, Xian-Bao Mao, Jun-Ping Cheng, Yue-Yue Huang, RuiZhi Liu
Objective To investigate the effect of sperm DNA fragmentation on the fertilization rate, embryo development and pregnancy outcome of in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) in a cohort of Chinese couples. Methods Infertile couples that had undergone assisted reproductive technology at our centre between January 2011 and December 2013 were included in this retrospective study. Fractions of prepared sperm samples were evaluated for sperm DNA fragmentation on the day of oocyte recovery...
December 2016: Journal of International Medical Research
https://www.readbyqxmd.com/read/28320989/differentially-methylated-cpg-sites-in-bull-spermatozoa-revealed-by-human-dna-methylation-arrays-and-bisulfite-analysis
#2
Kumiko Takeda, Eiji Kobayashi, Satoshi Akagi, Kagetomo Nishino, Masahiro Kaneda, Shinya Watanabe
The methylation status of sperm DNA differs between individual bulls. However, the relationship between methylation status and bull sperm parameters is not well elucidated. The present study investigated genome-wide methylation profiles at 450,000 CpG sites in bull spermatozoa by using a human DNA methylation microarray. Semen samples from three adult Japanese Black bulls with different in vitro fertilization (IVF) results and from a young Holstein bull through sexual maturation (at ages 10, 10.5, 15, and 25 months) were used for the analysis...
March 19, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28319264/a-retrospective-study-of-the-effect-of-increasing-age-on-success-rates-of-assisted-reproductive-technology
#3
Yvonne M O'Brien, Michael Ryan, Fiona Martyn, Mary B Wingfield
OBJECTIVE: To demonstrate the effect of increasing age on the outcome of assisted reproductive technology, particularly among women aged 40 years or older. METHODS: A retrospective analysis was conducted using prospectively collected data for all in vitro fertilization and intracytoplasmic sperm injection cycles among women aged 30-35 years or 40-44 years conducted at Merrion Fertility Clinic, Dublin, Ireland, between January 1, 2010, and December 31, 2014. The relationship between age and treatment outcome was assessed...
March 20, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28302936/cryotolerance-of-porcine-blastocysts-is-improved-by-treating-in-vitro-matured-oocytes-with-l-carnitine-prior-to-fertilization
#4
Jenna L Lowe, Louise K Bartolac, Roslyn Bathgate, Christopher G Grupen
Sufficient generation of adenosine triphosphate (ATP) by oocytes is critical for fertilization and embryo development. The objective of this study was to determine the effects of supplementing media with L-carnitine, a co-factor required for the metabolism of fatty acids, during the peri-fertilization period on embryo development and energy generation. Firstly, in vitro fertilization (IVM) porcine oocytes were co-incubated with sperm in IVF medium supplemented with 0‒24 mM L-carnitine. The blastocyst formation rate of the control group was greater than those of the L-carnitine groups (P < 0...
March 16, 2017: Journal of Reproduction and Development
https://www.readbyqxmd.com/read/28296202/dna-methylation-imprinting-errors-in-spermatogenic-cells-from-maturation-arrest-azoospermic-patients
#5
P I Marques, S Fernandes, F Carvalho, A Barros, M Sousa, C J Marques
Imprinting errors have been described in spermatozoa from infertile patients with oligozoospermia and azoospermia. However, little is known about methylation of imprinted genes in other spermatogenic cells from azoospermic patients. Therefore, we aimed to evaluate the methylation status of single CpGs located in the differentially methylated regions (DMRs) of two imprinted genes, one paternally (H19) and one maternally (MEST) methylated, in primary spermatocytes of azoospermic patients presenting complete (MAc, n = 7) and incomplete (MAi, n = 8) maturation arrest, as well as in other spermatogenic cells from MAi patients that presented focus of complete spermatogenesis in some seminiferous tubules...
March 10, 2017: Andrology
https://www.readbyqxmd.com/read/28283737/mild-reproductive-impact-of-a-y-chromosome-deletion-on-a-c57bl-6j-substrain
#6
Megan M MacBride, Adam Navis, Amar Dasari, Ana V Perez
A recently reported deletion of about 40 Mb in length between 6.12/6.57 and 46.73/47.31 Mb on the Y chromosome long arm of the C57BL/6JBomTac inbred strain made us closely examine the strain's breeding history and reproductive characteristics. We verified that the two copies of Rbm31y that are present inside the putative deletion were indeed deleted. This inbred strain presents an expected litter size for a C57BL/6 substrain. In vitro fertilization (IVF) efficiency and breeding efficiencies are comparable to those of the C57BL/6NTac substrain; however, the male/female sex ratio in the C57BL/6JBomTac is mildly skewed towards females...
March 10, 2017: Mammalian Genome: Official Journal of the International Mammalian Genome Society
https://www.readbyqxmd.com/read/28280854/deficiency-in-sperm-egg-protein-interaction-as-a-major-cause-of-fertilization-failure
#7
REVIEW
Soudabeh Sabetian, Mohd Shahir Shamsir
Complete elucidation of fertilization process at molecular level is one of the unresolved challenges in sexual reproduction studies, and understanding the molecular mechanism is crucial in overcoming difficulties in infertility and unsuccessful in vitro fertilization. Sperm-oocyte interaction is one of the most remarkable events in fertilization process, and deficiency in protein-protein interactions which mediate this interaction is a major cause of unexplained infertility. Due to detection of how the various defects of sperm-oocyte interaction can affect fertilization failure, different experimental methods have been applied...
March 9, 2017: Journal of Membrane Biology
https://www.readbyqxmd.com/read/28277137/the-decline-in-serum-estradiol-on-the-second-day-after-oocyte-retrieval-affects-the-outcome-of-ivf-icsi-et-treatment-in-high-ovarian-responders
#8
Xueyan Bai, Yang Zhang, Shan Liu, Danni Qu, Hui Su, Haiying Ren, Yuan Li
OBJECTIVE: To investigate the predictive value of the decline in serum estradiol on the second day after oocyte retrieval on the outcomes of in vitro fertilization (IVF) or intra-cytoplasmic sperm injection and embryo transfer (ICSI-ET) among high ovarian responders. DESIGN: Retrospective single-center cohort study. SETTING: Tertiary-care, university-affiliated teaching hospital. Patients Women aged 20-45 years undergoing assisted reproduction treatment from June 2014 to December 2015...
February 21, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28276189/follicular-flushing-time-to-look-elsewhere-to-improve-ivf-outcomes
#9
Jason M Franasiak
Poor responders represent one of the greatest challenges in assisted reproduction. The very diagnosis threatens the proposed benefit of in vitro fertilization (IVF): attaining a numeric advantage. Thus, it may seem somewhat logical that steps to maximize this numeric advantage may prove beneficial in this population. In this issue of BJOG, Haydardedeoglu et al. assess the benefit of follicular flushing in poor responders undergoing IVF and intracytoplasmic sperm injection (IVF/ICSI) as compared to direct aspiration in a randomized control trial (Haydardedeoglu et al...
March 9, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28258586/pre-implantation-genetic-screening-among-women-experiencing-recurrent-failure-of-in-vitro-fertilization
#10
Safak Hatirnaz, Alev Ozer, Ebru Hatirnaz, Melahat Atasever, Serdar Başaranoglu, Mine Kanat-Pektas, Murat Api
OBJECTIVE: To determine the efficiency of pre-implantation genetic screening (PGS) among women scheduled to undergo intracytoplasmic sperm injection who had experienced recurrent in vitro fertilization (IVF) failure. METHODS: The present retrospective cohort study reviewed the medical records of consecutive women who had experienced recurrent IVF failure and had presented at a private IVF facility in Trabzon Province, Turkey, to undergo intracytoplasmic sperm injection between May 1, 2012, and December 31, 2014...
March 3, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28257868/sperm-pretreatment-with-heparin-and-l-glutathione-sex-sorting-and-double-cryopreservation-to-improve-intracytoplasmic-sperm-injection-in-bovine
#11
Natalia Gabriela Canel, Romina Jimena Bevacqua, María Inés Hiriart, Natana Chaves Rabelo, Luiz Sergio de Almeida Camargo, Marina Romanato, Lucrecia Piñeiro de Calvo, Daniel Felipe Salamone
In bovine, intracytoplasmic sperm injection (ICSI) remains inefficient partially due to low levels of sperm decondensation. The aim of this study was to determine whether the injection of normal size sperm pretreated with heparin (Hep) and l-glutathione (GSH), the use of sex-sorted sperm, the double round of sperm freezing/thawing (re frozen), or the combination of these approaches can improve sperm decondensation and embryo development after ICSI in cattle. Cleavage and blastocyst rates were evaluated on days 2 and 7 post ICSI...
April 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28254221/progesterone-estradiol-ratio-0-25-on-the-day-of-human-chorionic-gonadotropin-administration-is-associated-with-adverse-pregnancy-outcomes-in-prolonged-protocols-for-in%C3%A2-vitro-fertilization-intracytoplasmic-sperm-injection
#12
Yuan Li, Keli Luo, Yi Tang, Ge Lin, Guangxiu Lu, Fei Gong
OBJECTIVE: It has been suggested that a progesterone/estradiol ratio (P/E2) ≥ 1.0 on the day of human chorionic gonadotropin (hCG) administration indicates premature luteinization and might be associated with an adverse pregnancy; however, a lower limit of this ratio has not been determined. We aimed to identify a lower limit of P/E2 that correlates significantly with an increase in adverse pregnancies in patients undergoing a prolonged in vitro fertilization/intracytoplasmic sperm injection therapy...
February 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28251671/ascorbic-acid-reduces-redox-potential-in-human-spermatozoa-subjected-to-heat-induced-oxidative-stress
#13
G Ahmad, A Agarwal, S C Esteves, R Sharma, M Almasry, A Al-Gonaim, G AlHayaza, N Singh, L Al Kattan, W M Sannaa, E Sabanegh
Oxidation-reduction potential (ORP) is a new measure of oxidative stress. It is a balance between the total available oxidants and reductants. This study measures the efficiency of ascorbic acid (AA) against oxidative stress induced by either heat alone or heat and hydrogen peroxide in sperm suspensions using the MiOXSYS System. Two concentrations of ascorbic acid (400 and 600 μmol/L) were tested against heat- and heat plus hydrogen peroxide-induced oxidative stress in sperm suspensions after 2 and 4 hr of incubation...
March 1, 2017: Andrologia
https://www.readbyqxmd.com/read/28239474/predictive-value-of-sperm-deoxyribonucleic-acid-dna-fragmentation-index-in-male-infertility
#14
Budi Wiweko, Pramety Utami
BACKGROUND: Recently, damage to the sperm DNA has been studied as it is associated with reduced fertilization rates, embryo quality, and pregnancy rates, also higher rates of spontaneous miscarriage. OBJECTIVE: To develop a diagnostic method in predicting male infertility. MATERIAL AND METHODS: The design of this study is cross-sectional. Data were retrieved from medical records of Yasmin IVF Clinic Dr. Cipto Mangunkusumo General Hospital and Daya Medika Infertility Clinic from January to December 2015...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/28238309/-deep-infiltrative-endometriosis-without-digestive-involvement-what-is-the-impact-of-surgery-on-in-vitro-fertilization-outcomes-a-retrospective-study
#15
L Mounsambote, J Cohen, S Bendifallah, E Mathieu d'Argent, L Selleret, N Chabbert-Buffet, M Ballester, J M Antoine, E Daraï
OBJECTIVES: To evaluate the impact of complete removal of endometriosis in case of deep infiltrative endometriosis without digestive involvement, on in vitro fertilization outcomes. METHODS: Retrospective monocentric study. We included infertile women with deep infiltrative endometriosis without colorectal involvement that underwent IVF. Women were divided in two groups, following their history: "surgery" when they underwent complete endometriosis resection before IVF and "without surgery" when they underwent IVF without endometriosis removal...
January 2017: Gynecol Obstet Fertil Senol
https://www.readbyqxmd.com/read/28237329/incubation-of-boar-spermatozoa-in-viscous-media-by-addition-of-methylcellulose-improves-sperm-quality-and-penetration-rates-during-in%C3%A2-vitro-fertilization
#16
David González-Abreu, Soledad García-Martínez, Vanesa Fernández-Espín, Raquel Romar, Joaquín Gadea
This work was designed to study whether viscous media can improve the in vitro sperm functionality in pigs by using methylcellulose as a thickener. Viscosity of porcine oviductal fluid (POF) was compared with culture medium (Tyrode's) supplemented with methylcellulose (MET 0, 0.5 and 1% w/v). Spermatozoa were incubated in the different media (0, 1 and 2 h) and sperm motion parameters, lipid membrane disorder, plasma membrane integrity and reactive oxygen species (ROS) formation were assessed. Fertilization results were assessed i) preincubating spermatozoa in the viscous media followed by gamete coculture in a non-viscous medium; and ii) gamete coculture in the viscous media...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28228962/conforming-with-current-regulation-in-turkey-regarding-the-freezing-of-oocytes-a-case-report-of-the-first-pregnancy-in-turkey-achieved-through-oocyte-vitrification
#17
Semra Kahraman, Kahraman Ulker, Caroline Pirkevi Çetinkaya, Yesim Kumtepe Colakoglu, Hakan K Yelke, Cihangir Yilanlioglu
OBJECTIVES: To present the first pregnancy achieved in Turkey with frozen-warmed oocytes in a case with previous nine unsuccessful assisted reproductive technology (ART) attempts. METHODS: The clinical follow-up of a 33-year-old female applying to our ART centre after a long and complicated history of infertility is described. RESULTS: In April 2013, the woman attempted our centre for her 10th ART trial. She informed us on oocyte pick-up (OPU) day that her husband had been hospitalized following a car crush in Albania and was unable to travel to our clinic to give a sperm sample...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/28226241/catsper%C3%AE-regulates-the-structural-continuity-of-sperm-ca-2-signaling-domains-and-is-required-for-normal-fertility
#18
Jean-Ju Chung, Kiyoshi Miki, Doory Kim, Sang-Hee Shim, Huanan F Shi, Jae Yeon Hwang, Xinjiang Cai, Yusuf Iseri, Xiaowei Zhuang, David E Clapham
We report that the Gm7068 (CatSpere) and Tex40 (CatSperz) genes encode novel subunits of a 9-subunit CatSper ion channel complex. Targeted disruption of CatSperz reduces CatSper current and sperm rheotactic efficiency in mice, resulting in severe male subfertility. Normally distributed in linear quadrilateral nanodomains along the flagellum, the complex lacking CatSperζ is disrupted at ~0.8 μm intervals along the flagellum. This disruption renders the proximal flagellum inflexible and alters the 3D flagellar envelope, thus preventing sperm from reorienting against fluid flow in vitro and efficiently migrating in vivo...
February 23, 2017: ELife
https://www.readbyqxmd.com/read/28225074/the-wasp-arp2-3-complex-signal-cascade-is-involved-in-actin-dependent-sperm-nuclei-migration-during-double-fertilization-in-tobacco-and-maize
#19
Xiongbo Peng, Tingting Yan, Mengxiang Sun
Sperm nuclear migration during fertilization in Arabidopsis and rice has recently been found to be actin-dependent, but the driving force behind this actin cytoskeleton-dependent motion is unclear. Here, we confirmed that the actin-dependent sperm nuclei migration during fertilization is a conserved mechanism in plants. Using in vitro fertilization systems, we showed that a functional actin is also essential in maize and tobacco for sperm nuclei migration after gamete membrane fusion. Cytoskeleton depolymerization inhibitor treatments supported the view that sperm nuclei migration is actin-dependent but microtubule-independent in both egg cell and central cell during double fertilization...
February 22, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28220153/high-throughput-flowing-upstream-sperm-sorting-in-a-retarding-flow-field-for-human-semen-analysis
#20
Jen-Kuei Wu, Peng-Chun Chen, Yu-Nan Lin, Chia-Woei Wang, Li-Chern Pan, Fan-Gang Tseng
In this paper, we propose a microfluidic device capable of generating a retarding flow field for the sorting and separation of human motile sperm in a high-throughput manner. The proposed sorting/separation process begins with a rapid flow field in a straight-flow zone to carry sperm into a sorting zone to maintain the sperm's mobility. The sorting zone consists of a diffuser-type sperm sorter to differentiate sperm with different motilities based on the flowing upstream nature of human sperm in a retarding flow field...
March 13, 2017: Analyst
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