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https://www.readbyqxmd.com/read/28612309/pre-implantation-genetic-diagnosis-should-we-use-icsi-for-all
#1
Baruch Feldman, Adva Aizer, Masha Brengauz, Keren Dotan, Jacob Levron, Eyal Schiff, Raoul Orvieto
OBJECTIVE: Intracytoplasmic sperm injection (ICSI) is commonly used during pre-implantation genetic diagnosis (PGD) in vitro fertilization (IVF), aiming to eliminate the risk of contamination from extraneous sperm DNA. Recently, ICSI "overuse" in non-male infertility has been doubted, since it does not offer an advantage over IVF. Prompted by the aforementioned observations, we sought to assess the accuracy of IVF vs ICSI in PGD cases, as might be reflected by a difference in the prevalence of discarded embryos as a consequent of parental contamination...
June 13, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28583596/sperm-maturation-in-sturgeon-actinopterygii-acipenseriformes-a-review
#2
REVIEW
Borys Dzyuba, Jacky Cosson, Viktoriya Dzyuba, Pavlo Fedorov, Olga Bondarenko, Marek Rodina, Otomar Linhart, William L Shelton, Sergii Boryshpolets
The morphology of the reproductive system of acipenseriform fishes is quite different from that of teleostean species, but an associated unique physiological difference in male sturgeons was not discovered until recently; sperm of sturgeons passes through the kidneys then via Wolffian ducts into the environment rather that emptying directly through seminal ducts. The mixing of sperm with excretory products has been found to be a requisite for the capacity to be activated (maturation step) instead of being deleterious...
July 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28576677/impact-of-different-dilution-techniques-on-boar-sperm-quality-and-sperm-distribution-of-the-extended-ejaculate
#3
M Schulze, C Ammon, J Schaefer, A-M Luther, M Jung, D Waberski
The dilution of ejaculates is a fundamental step for the production of liquid-preserved boar semen. For a long time, it has been recommended to add the extender to the ejaculate. The aim of the present study was to first compare the effect of the position ('center' vs. 'wall') where the extender is added to the semen-mixing cylinder (height 32.5cm; diameter 12.7cm) using an automatic dispenser (n=11). In experiment 2 (n=30), we analyzed the two main dilution methods (extender to the semen ('control') vs. 'reverse')...
May 29, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28576621/chelating-agents-in-combination-with-rosmarinic-acid-for-boar-sperm-freeze-drying
#4
Maite Olaciregui, Victoria Luño, Noelia González, Paula Domingo, Ignacio de Blas, Lydia Gil
The presence of DNA protective agents in the medium is necessary to maintain sperm functionality after freeze-drying procedure. The objective of this study was to investigate the effect of chelating agents, ethylene diaminetetraacetic acid (EDTA) and ethylene glycoltetraacetic acid (EGTA), in combination with rosmarinic acid (RA) on DNA integrity of freeze-dried boar sperm. We also examined the effect of these agents on the in vitro developmental ability of porcine oocytes following sperm injection (ICSI). Heterospermic mix, obtained from ejaculated sperm of three boars, was freeze-dried in two different chelating agents' media: 50mM EDTA or 50mM EGTA, and in these media supplemented with 105μM of rosmarinic acid...
May 30, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/28574374/nitrophorins-and-nitrobindins-structure-and-function
#5
REVIEW
Giovanna De Simone, Paolo Ascenzi, Alessandra di Masi, Fabio Polticelli
Classical all α-helical globins are present in all living organisms and are ordered in three lineages: (i) flavohemoglobins and single domain globins, (ii) protoglobins and globin coupled sensors and (iii) truncated hemoglobins, displaying the 3/3 or the 2/2 all α-helical fold. However, over the last two decades, all β-barrel and mixed α-helical-β-barrel heme-proteins displaying heme-based functional properties (e.g. ligand binding, transport and sensing) closely similar to those of all α-helical globins have been reported...
May 24, 2017: Biomolecular Concepts
https://www.readbyqxmd.com/read/28541460/seminal-plasma-pro-inflammatory-cytokines-interferon-%C3%AE-ifng-and-c-x-c-motif-chemokine-ligand-8-cxcl8-fluctuate-over-time-within-men
#6
David J Sharkey, Kelton P Tremellen, Nancy E Briggs, Gustaaf A Dekker, Sarah A Robertson
STUDY QUESTION: Do seminal plasma pro-inflammatory cytokines interferon-γ (IFNG) and C-X-C motif chemokine ligand 8 (CXCL8) vary within individual men over time? SUMMARY ANSWER: IFNG exhibits substantial variation that is independent of duration of abstinence but correlates with lipopolysaccharide (LPS) content, while CXCL8 varies moderately in association with duration of abstinence. WHAT IS KNOWN ALREADY: Pro-inflammatory cytokines IFNG and CXCL8 in seminal fluid can adversely impact male and female fertility...
May 25, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28541378/what-does-a-single-semen-sample-tell-you-implications-for-male-factor-infertility-research
#7
Yu-Han Chiu, Regina Edifor, Bernard A Rosner, Feiby L Nassan, Audrey J Gaskins, Lidia Minguez-Alarcon, Paige L Williams, Cigdem Tanrikut, Russ Hauser, Jorge E Chavarro
Semen parameters are variable within-man but it is unclear whether one sample could represent a man's long-term average in epidemiologic studies. Between 2005 and 2014, 329 men from a fertility clinic provided 768 semen samples in the EARTH study in Boston, Massachusetts.Total sperm count, concentration, morphology, motility, and ejaculate volume were assessed. We used linear mixed models to compare men's first samples to their long-term averages, and calculate intraclass correlation coefficients for each parameter...
May 24, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/28536242/mutation-in-tdrd9-causes-non-obstructive-azoospermia-in-infertile-men
#8
Maram Arafat, Iris Har-Vardi, Avi Harlev, Eliahu Levitas, Atif Zeadna, Maram Abofoul-Azab, Victor Dyomin, Val C Sheffield, Eitan Lunenfeld, Mahmoud Huleihel, Ruti Parvari
BACKGROUND: Azoospermia is diagnosed when sperm cells are completely absent in the ejaculate even after centrifugation. It is identified in approximately 1% of all men and in 10%-20% of infertile males. Non-obstructive azoospermia (NOA) is characterised by the absence of sperm due to either a Sertoli cell-only pattern, maturation arrest, hypospermatogenesis or mixed patterns. NOA is a severe form of male infertility, with limited treatment options and low fertility success rates. In the majority of patients, the cause for NOA is not known and mutations in only a few genes were shown to be causative...
May 23, 2017: Journal of Medical Genetics
https://www.readbyqxmd.com/read/28496033/joint-toxicity-of-fluoroquinolone-and-tetracycline-antibiotics-to-zebrafish-danio-rerio-based-on-biochemical-biomarkers-and-histopathological-observation
#9
Lihe Ding, Luxiu Zang, Yuna Zhang, Yuhuan Zhang, Xuedong Wang, Weiming Ai, Nani Ding, Huili Wang
Herein, we report on the joint toxicity of four fluoroquinolones and two tetracyclines (β-diketone antibiotics-DKAs) to zebrafish based on a series of toxicological endpoints and histopathological observations. A positive dose-dependence was observed in DKA-exposure groups with a 72-hpf EC50 of 130.3 mg/L for hatching rate, 120-hpf LC50 of 149.8 mg/L, and 120-hpf EC50 of 135.1 mg/L for malformation rate. When zebrafish at 60 dpf were exposed to a series of DKA concentrations (45, 60 and 90 mg/L) for 7, 14 and 21 days, creatine kinase and AChE activities were significantly induced, and intracellular malondialdehyde increased in all treatments except for the 45 mg/L treatment...
2017: Journal of Toxicological Sciences
https://www.readbyqxmd.com/read/28461086/storage-temperature-and-sucrose-concentrations-affect-ram-sperm-quality-after-vitrification
#10
A Arando, A Gonzalez, J V Delgado, F A Arrebola, C C Perez-Marín
The aim of this study was to analyse the characteristics of ram spermatozoa subjected to varying concentrations of sucrose, and the influence of storage temperature (22°C or 5°C) prior to vitrification. Ejaculated semen was diluted in TCFEY (tris-citric acid-fructose 20% egg yolk), and two aliquots were prepared at a final concentration of 100×10(6)spz/ml, one maintained at room temperature (22°C) and the other at 5°C. In the first experiment, the toxicity of sucrose diluents on the sperm was analysed; sperm samples at different temperatures were diluted (1:2) in TCF-BSA 2% (control) or in the same extender supplemented with various sucrose concentrations (0...
April 25, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28430968/sex-chromosome-dependent-differential-viability-of-human-spermatozoa-during-prolonged-incubation
#11
Young-Ah You, Woo-Sung Kwon, Md Saidur Rahman, Yoo-Jin Park, Young-Ju Kim, Myung-Geol Pang
STUDY QUESTION: Are there significant differences in the ability of X chromosome-bearing (X) spermatozoa and Y chromosome-bearing (Y) spermatozoa to survive incubation under stressful conditions? SUMMARY ANSWER: Y spermatozoa are more vulnerable to stress than their X counterparts depending on culture period and temperature, and show higher expression of apoptotic proteins. WHAT IS KNOWN ALREADY: The primary sex ratio is determined by there being an equal number of spermatozoa carrying X and Y chromosomes...
June 1, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28428445/pectinase-treated-panax-ginseng-protects-heat-stress-induced-testicular-damage-in-rats
#12
Min Kyoung Kim, Kyu-Min Cha, Seock-Yeon Hwang, Un-Kyu Park, Seok Kyo Seo, Sang-Ho Lee, Min-Sik Jeong, SiHyun Cho, Spandana Rajendra Kopalli, Si-Kwan Kim
Testicular hyperthermia is well studied to cause impaired spermatogenesis. In the present study, the protective effect of enzymatically modified (pectinase-treated) Panax ginseng (GINST) against intermittent sub-chronic heat stress-induced testicular damage in rats was investigated. Male Sprague-Dawley rats were divided into four groups: normal control (NC), heat-stressed control (HC), heat-stressed plus GINST-100 mg/kg/day (HG100) and heat-stressed plus GINST-200 mg/kg/day (HG200) treatment groups. GINST (100 and 200 mg/kg/day) was mixed separately with a regular pellet diet and was administered orally for 8 weeks starting from 1 week before heat exposure...
June 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28419902/evaluating-the-efficacy-of-dna-differential-extraction-methods-for-sexual-assault-evidence
#13
Sonja B Klein, Martin R Buoncristiani
Analysis of sexual assault evidence, often a mixture of spermatozoa and victim epithelial cells, represents a significant portion of a forensic DNA laboratory's case load. Successful genotyping of sperm DNA from these mixed cell samples, particularly with low amounts of sperm, depends on maximizing sperm DNA recovery and minimizing non-sperm DNA carryover. For evaluating the efficacy of the differential extraction, we present a method which uses a Separation Potential Ratio (SPRED) to consider both sperm DNA recovery and non-sperm DNA removal as variables for determining separation efficiency...
March 31, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28414175/success-in-the-acquisition-of-bombyx-mori-sperm-motility-is-influenced-by-the-extracellular-production-of-nitric-oxide-no-in-the-presence-of-seminal-fluid-nitric-oxide-synthase-nos
#14
Sumiharu Nagaoka, Maiko Asagoshi, Keita Kato, Yuki Takata
A trypsin-like protease called initiatorin is known to initiate sperm motility in the silkworm, Bombyx mori, but little is known about the signaling events leading to sperm flagellar beating. The aim of this study was to investigate whether this mechanism of sperm motility activation involves the signaling transmitter nitric oxide (NO). NO is produced from the amino acid L-arginine by the enzyme action of nitric oxide synthase (NOS; EC 1.14.13.39). Simple treatment of quiescent sperm with an NO donor (SNAP or NOC7) in vitro did not lead to activation of motility...
May 2017: Insect Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28396295/molecular-characterization-of-fasciola-flukes-obtained-from-wild-sika-deer-and-domestic-cattle-in-hokkaido-japan
#15
Madoka Ichikawa-Seki, Tomoko Shiroma, Tatsuya Kariya, Ryo Nakao, Yuma Ohari, Kei Hayashi, Shinya Fukumoto
The number of wild sika deer (Cervus nippon yesoensis) continues to increase in Hokkaido Prefecture, Japan. The major concern for the livestock industry is the transmission of pathogens between sika deer and cattle. Fasciolosis is an important disease that can occur in both animals. The aim of this study was to examine the possible mutual transmission of this disease in Hokkaido Prefecture. A total of 105 Fasciola flukes were obtained from sika deer and 96 from domestic cattle. The Fasciola flukes in Japan are reported to possess no mature sperm...
April 7, 2017: Parasitology International
https://www.readbyqxmd.com/read/28392200/longitudinal-growth-of-french-singleton-children-born-after-in-vitro-fertilization-and-intracytoplasmic-sperm-injection-body-mass-index-up-to-5-years-of-age
#16
L Meddeb, V Pauly, P Boyer, D Montjean, B Devictor, L Curel, P Seng, R Sambuc, M Gervoise Boyer
BACKGROUND: The literature presents conflicting results on the epigenetic effect of in vitro fertilization (IVF) on the short-term and mid-term growth of children. These contradictory results may be related to the use of heterogeneous methodologies and non-longitudinal data. The goal of this study was to compare the body mass index (BMI) of children conceived via IVF and spontaneous conception (SC) children, using longitudinal data from birth to 5 years. METHODS: This study compared 118 singleton children born after in vitro fertilization, with or without intracytoplasmic sperm injection (ICSI), selected from a pre-existing single-center cohort to 320 SC children from the same geographic area...
April 6, 2017: Revue D'épidémiologie et de Santé Publique
https://www.readbyqxmd.com/read/28387056/effects-of-ovarian-fluid-and-genetic-differences-on-sperm-performance-and-fertilization-success-of-alternative-reproductive-tactics-in-chinook-salmon
#17
S J Lehnert, I A E Butts, E W Flannery, K M Peters, D D Heath, T E Pitcher
In many species, sperm velocity affects variation in the outcome of male competitive fertilization success. In fishes, ovarian fluid (OF) released with the eggs can increase male sperm velocity and potentially facilitate cryptic female choice for males of specific phenotypes and/or genotypes. Therefore, to investigate the effect of OF on fertilization success, we measured sperm velocity and conducted in vitro competitive fertilizations with paired Chinook salmon (Oncorhynchus tshawytscha) males representing two alternative reproductive tactics, jacks (small sneaker males) and hooknoses (large guarding males), in the presence of river water alone and OF mixed with river water...
April 7, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28387041/paternity-analysis-of-wild-caught-females-shows-that-sperm-package-size-and-placement-influence-fertilization-success-in-the-bushcricket-pholidoptera-griseoaptera
#18
Darren James Parker, Julia Zaborowska, Michael Gordon Ritchie, Karim Vahed
In species where females store sperm, males may try to influence paternity by the strategic placement of sperm within the female's sperm storage organ. Sperm may be mixed or layered in storage organs, and this can influence sperm use beyond a 'fair raffle'. In some insects, sperm from different matings is packaged into discrete packets (spermatodoses), which retain their integrity in the female's sperm storage organ (spermatheca), but little is known about how these may influence patterns of sperm use under natural mating conditions in wild populations...
June 2017: Molecular Ecology
https://www.readbyqxmd.com/read/28379559/sperm-recovery-and-icsi-outcomes-in-klinefelter-syndrome-a-systematic-review-and-meta-analysis
#19
Giovanni Corona, Alessandro Pizzocaro, Fabio Lanfranco, Andrea Garolla, Fiore Pelliccione, Linda Vignozzi, Alberto Ferlin, Carlo Foresta, Emmanuele A Jannini, Mario Maggi, Andrea Lenzi, Daniela Pasquali, Sandro Francavilla
BACKGROUND: Specific factors underlying successful surgical sperm retrieval rates (SRR) or pregnancy rates (PR) after testicular sperm extraction (TESE) in adult patients with Klinefelter syndrome (KS) have not been completely clarified. OBJECTIVE AND RATIONALE: The aim of this review was to meta-analyse the currently available data from subjects with KS regarding SRRs as the primary outcome. In addition, when available, PRs and live birth rates (LBRs) after the ICSI technique were also investigated as secondary outcomes...
May 1, 2017: Human Reproduction Update
https://www.readbyqxmd.com/read/28367306/bull-fertility-and-its-relation-with-density-gradient-selected-sperm
#20
Lynda Allouche, Toufik Madani, Mohamed Mechmeche, Laetitia Clement, Allaoua Bouchemal
BACKGROUND: Sperm selection method is usually used to collect these cells for in vitro-assisted reproduction. Few studies reported the relationship of in vivo fertility and semen parameters after sperm selection; hence, the present study attempted to assess different semen parameters after post-thaw or sperm selection, using density gradient separation BoviPure®, to predict in vivo fertility. MATERIALS AND METHODS: In this experimental study, frozen semen quality of four Montbeliarde bulls were assessed after post-thaw (PT) or after sperm selection (SSp), using density gradient separation BoviPure®, to predict the fertility rate in vivo...
April 2017: International Journal of Fertility & Sterility
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