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https://www.readbyqxmd.com/read/29241080/paternal-urinary-concentrations-of-organophosphate-flame-retardant-metabolites-fertility-measures-and-pregnancy-outcomes-among-couples-undergoing-in-vitro-fertilization
#1
Courtney C Carignan, Lidia Mínguez-Alarcón, Paige L Williams, John D Meeker, Heather M Stapleton, Craig M Butt, Thomas L Toth, Jennifer B Ford, Russ Hauser
BACKGROUND: Use of organophosphate flame retardants (PFRs) has increased over the past decade following the phase out of some brominated flame retardants, leading to increased human exposure. We recently reported that increasing maternal PFR exposure is associated with poorer pregnancy outcomes among women from a fertility clinic. Because a small epidemiologic study previously reported an inverse association between male PFR exposures and sperm motility, we sought to examine associations of paternal urinary concentrations of PFR metabolites and their partner's pregnancy outcomes...
December 11, 2017: Environment International
https://www.readbyqxmd.com/read/29239046/sperm-preparation-through-sephadex%C3%A2-filtration-improves-in-vitro-fertilization-rate-of-buffalo-oocytes
#2
A U Husna, A Azam, S Qadeer, M A Awan, S Nasreen, Q Shahzad, A Fouladi-Nashta, M Khalid, S Akhter
Routinely, swim-up method is used to separate high-quality sperm; however, long processing time and close cell-to-cell contact during the centrifugation step are inevitable elements of oxidative stress to sperm. The objective was to evaluate Sephadex™ and glass wool filtration to separate motile, intact and viable sperm for in vitro fertilization in buffalo. The cumulus-oocyte complexes (COCs) were collected from ovaries of slaughtered buffaloes by aspiration and matured for 24 hr in CO2 incubator at 38...
December 14, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29238921/bacillus-probiotic-supplementations-improve-laying-performance-egg-quality-hatching-of-laying-hens-and-sperm-quality-of-roosters
#3
Maria S Mazanko, Ivan F Gorlov, Evgeniya V Prazdnova, Maxim S Makarenko, Alexander V Usatov, Anzhelika B Bren, Vladimir A Chistyakov, Alexey V Tutelyan, Zoya B Komarova, Natalia I Mosolova, Denis N Pilipenko, Olga E Krotova, Aleksandr N Struk, Angela Lin, Michael L Chikindas
The study aims at elucidating the effect of bacilli probiotic preparations on the physiology of laying hens and roosters. Probiotic formulations were prepared as soybean products fermented by Bacillus subtilis KATMIRA1933 and Bacillus amyloliquefaciens B-1895. In this study, groups of male and female chickens were used. These groups received a probiotic preparation based on either B. subtilis KATMIRA1933 or B. amyloliquefaciens B-1895, or of a mixture of strains, from the first day to the age of 39 weeks. These preparations positively affected egg production, quality of sperm production, and quality and hatchery of eggs...
December 13, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/29235206/sperm-storage-influences-the-potential-for-spontaneous-acrosome-reaction-of-the-sperm-in-the-newt-cynops-pyrrhogaster
#4
Shinnosuke Kon, Tae Sato, Daisuke Endo, Tomoe Takahashi, Akio Takaku, Yuni Nakauchi, Fubito Toyama, Victor B Meyer-Rochow, Eriko Takayama-Watanabe, Akihiko Watanabe
Sperm storage is supposed to influence sperm quality, although the details remain unclear. In the present study, we found that sperm stored in a sperm storage site, the vas deferens of Cynops pyrrhogaster, spontaneously undergo acrosome reaction following incubation in Steinberg's salt solution (ST). Percentages of acrosome-reacted sperm increased time-dependently to about 60% in 24 hr. The concentration of cyclic adenosine monophosphate (cAMP) was elevated after incubating sperm in ST, while dibutylyl cAMP induced an acrosome reaction...
November 20, 2017: Molecular Reproduction and Development
https://www.readbyqxmd.com/read/29233502/is-there-an-association-between-artificial-sweetener-consumption-and-in-vitro-reproduction-outcomes
#5
Amanda Souza Setti, Daniela Paes de Almeida Ferreira Braga, Gabriela Halpern, Rita de Cássia S Figueira, Assumpto Iaconelli, Edson Borges
Previous studies have suggested an association between high intake of sweetened beverages and a number of adverse health outcomes. In this cross-sectional study, we investigated the association between daily consumption of sweetened soft drinks or coffee and the outcome of intracytoplasmic sperm injection (ICSI) treatment. Patients (n = 524) were interviewed by a nutritionist before ICSI treatment, using a food frequency questionnaire. Regression analysis showed that consumption of ≥3 servings of regular soft drinks or any amount of diet soft drinks was associated with oocyte dysmorphism, diminished embryo quality on days 2 and 3 of culture, and a mild effect on blastocyst formation, implantation and pregnancy rate...
November 28, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/29233211/toxicity-of-marine-pollutants-on-the-ascidian-oocyte-physiology-an-electrophysiological-approach
#6
Alessandra Gallo
In marine animals with external fertilization, gametes are released into seawater where fertilization and embryo development occur. Consequently, pollutants introduced into the marine environment by human activities may affect gametes and embryos. These xenobiotics can alter cell physiology with consequent reduction of fertilization success. Here the adverse effects on the reproductive processes of the marine invertebrate Ciona intestinalis (ascidian) of different xenobiotics: lead, zinc, an organic tin compound and a phenylurea herbicide were evaluated...
December 13, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/29231961/a-mechanism-by-which-astragalus-polysaccharide-protects-against-ros-toxicity-through-inhibiting-the-protein-dephosphorylation-of-boar-sperm-preserved-at-4-%C3%A2-c
#7
Jieli Fu, Qiangzhen Yang, Yuhua Li, Peifei Li, Lirui Wang, Xinhong Li
Numerous studies have shown that Astragalus polysaccharide (APS) has strong antioxidant effects and high practical value for preserving semen at low temperatures in vitro. However, to date, little attention has been paid to the precise mechanism of APS in sperm preservation at 4 °C. Thus, to gain further insight into the protective effects of APS, the present study was performed to assess the changes in sperm quality parameters, antioxidant capacity, ATP content and protein phosphorylation levels. Here, we demonstrated that supplementation with APS could effectively preserve boar sperm quality parameters such as sperm motility, acrosome integrity and mitochondrial membrane potential...
December 12, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29230840/correlation-of-biochemical-constituents-of-seminal-plasma-with-semen-quality-in-teddy-goat-capra-hircus-bucks
#8
S Umar, M Ahmad, I Ahmad, M Zubair, Z Umar, A S Qureshi, A Manzoor, A Murtaza, A Shaukat
This study was planned to determine the relationship between semen quality parameters and the levels of biochemical constituents of seminal plasma of Teddy (Capra hircus) buck semen. For this purpose, semen ejaculates were collected from five mature healthy Teddy bucks. All the experimental bucks were kept under natural environmental conditions. Semen was collected twice in a week for the duration of 6 weeks by Artificial Vagina (AV) in the breeding season (February-April). Two successive ejaculates of single buck were pooled at time of collection, and a total of 60 semen samples were processed for semen analysis...
December 12, 2017: Andrologia
https://www.readbyqxmd.com/read/29229561/effect-of-trehalose-and-sucrose-based-extenders-on-equine-sperm-quality-after-vitrification-preliminary-results
#9
C C Pérez-Marín, F D Requena, A Arando, S Ortiz-Villalón, F Requena, E I Agüera
There has been a lack of research into equine sperm vitrification to date, but studies of other species suggest it may have significant potential. To evaluate the impact of various cryoprotectant agents (CPA) and vitrification on equine sperm quality, a controlled study was carried out. A total of 12 ejaculates were subjected to exposure to CPA and vitrification. Sperm was diluted in a range of CPA: fresh, control (BSA), sucrose (0.15M, 0.3M and 0.5M), trehalose (0.15M, 0.3M and 0.5M) and the combination of sucrose and trehalose (M1: 0...
December 8, 2017: Cryobiology
https://www.readbyqxmd.com/read/29229446/clinical-utility-of-decorin-in-follicular-fluid-as-a-biomarker-of-oocyte-potential
#10
Yuki Sawada, Takeshi Sato, Chieko Saito, Fumiko Ozawa, Yasuhiko Ozaki, Mayumi Sugiura-Ogasawara
This study investigated the concentration of decorin (DCN) in mature follicular fluid and the existence in the granulosa cells. It also investigated whether DCN is useful as a biomarker for outcomes of assisted reproductive technology (ART). A retrospective cohort study was performed involving 130 oocytes of 88 patients treated with ART because of unexplained infertility. The concentration of DCN in the follicular fluid (F-DCN) was 39.26ng/ml (median value); it was higher than that in serum. F-DCN of the oocytes fertilized by intracytoplasmic sperm injection (ICSI) was significantly lower than that of oocytes that were not fertilized (33...
December 8, 2017: Reproductive Biology
https://www.readbyqxmd.com/read/29228727/prohibitin-mediated-mitochondrial-ubiquitination-during-spermiogenesis-in-chinese-mitten-crab-eriocheir-sinensis
#11
Cong-Cong Hou, Chao-Guang Wei, Cheng-Peng Lu, Xin-Ming Gao, Wan-Xi Yang, Jun-Quan Zhu
The sperm of Eriocheir sinensis has a cup-shaped nucleus that contains several mitochondria embedded at the opening of the cup. The acrosome vesicle also contains derivants of mitochondria. The mitochondria distribution pattern involves a decrease in the number and changes in the structure and transportation of these organelles. The decreased number of sperm mitochondria is achieved through autophagy or the ubiquitination pathway. Prohibitin (PHB), the mitochondria inner membrane protein, is an evolutionarily highly conserved protein, is closely associated with spermatogenesis and sperm quality control and is also a potential substrate of ubiquitination...
November 17, 2017: Oncotarget
https://www.readbyqxmd.com/read/29228106/proteomics-analysis-of-good-and-poor-quality-human-sperm-demonstrates-several-proteins-are-routinely-aberrantly-regulated
#12
J K Netherton, L Hetherington, R A Ogle, T Velkov, M A Baker
Male infertility is a complex condition, and for the most part, all men produce defective spermatozoa, but infertile men have a tendency to produce more. Despite attempts to classify infertility, there is no definitive test. One approach would be to use protein biomarkers, however as yet, we still do not understand proteins that are differentially expressed within defective spermatozoa. As such, we took nine men (fertility status unknown) and used Percoll density gradients to isolate a population of good and poor quality sperm...
December 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29226989/transcriptome-characterization-of-male-accessory-glands-in-ants-to-identify-molecules-involved-in-their-reproductive-success
#13
A Gotoh, S Shigenobu, K Yamaguchi, S Kobayashi, F Ito, K Tsuji
In insects, seminal fluid proteins that are produced by male accessory glands and transferred to females during mating have key functions in sperm competition and sperm physiology that lead to male reproductive success. In ants, male reproductive success also depends on the longevity of sperm stored in the queen's spermatheca because their sexual offspring are usually produced only after a prolonged storage period. We identified genes that were up-regulated in the male accessory glands relative to the bodies of Crematogaster osakensis to characterize the reproductive molecules associated with male reproductive success in ants...
December 11, 2017: Insect Molecular Biology
https://www.readbyqxmd.com/read/29223503/multiple-collections-of-common-carp-cyprinus-carpio-l-semen-during-the-reproductive-period-and-its-effects-on-sperm-quality
#14
Beata Irena Cejko, Beata Sarosiek, Sławomir Krejszeff, Radosław Kajetan Kowalski
Multiple collections of semen during the reproductive period of the common carp Cyprinus carpio L. were used to analyse changes in semen quality. Semen collection was performed on June 1 (first collection), 12 (second collection), and 19 (third collection) from individual males (n=11) by gentle abdominal massage. Semen quantity (semen volume and sperm count), quality (sperm motility and sperm viability), as well as seminal plasma parameters (pH of seminal plasma and seminal plasma osmotic pressure) and its enzymatic activity, e...
December 5, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29216684/the-impact-of-corynebacterium-glucuronolyticum-on-semen-parameters-a-prospective-pre-post-treatment-study
#15
T Meštrović, B Bedenić, J Wilson, S Ljubin-Sternak, M Sviben, M Neuberg, R Ribić, G Kozina, Z Profozić
Corynebacterium glucuronolyticum (C. glucuronolyticum) is a rare isolate that is only recently being acknowledged as a potential urogenital pathogen. The bibliographical references on this bacterial species are scarce, and its influence on all semen parameters was hitherto unknown - therefore, the aim of this study was to evaluate its effects on a range of sperm quality parameters. A prospective approach to compare semen parameters before and after treatment was used in this study. C. glucuronolyticum in semen specimens was identified using analytical profile index biotyping system (API Coryne) and additionally confirmed by matrix-assisted laser desorption/ionization time-of-flight mass-spectrometry (MALDI-TOF MS), with the determination of antimicrobial susceptibility by Kirby-Bauer method...
December 7, 2017: Andrology
https://www.readbyqxmd.com/read/29216539/influence-of-extracellular-environment-on-the-motility-and-structural-properties-of-spermatozoa-collected-from-hormonally-stimulated-panamanian-golden-frog-atelopus-zeteki
#16
Gina Della Togna, Brian Gratwicke, Matthew Evans, Lauren Augustine, Han Chia, Ed Bronikowski, James B Murphy, Pierre Comizzoli
A better understanding of the factors influencing the biology of amphibian spermatozoa after release from the testis is a prerequisite to the development of sperm preservation methods. The objective of the study was to determine the effect of extracellular conditions (exposure to water and different temperatures) over time on the sperm motility and structural properties (including morphology and DNA integrity) collected from hormonally stimulated Atelopus zeteki. Following intraperitoneal injection of gonadotropin-releasing hormone agonist (des-Gly10, D-Ala6, Pro-NHEt9 GnRH; 4 μg/g of body weight), human chorionic gonadotropin (hCG, 10 IU/gbw), or Amphiplex™ (0...
November 29, 2017: Theriogenology
https://www.readbyqxmd.com/read/29215767/exposure-to-levonorgestrel-increases-nest-acquisition-success-and-decreases-sperm-motility-in-the-male-fathead-minnow-pimephales-promelas
#17
Tyler Frankel, Lance Yonkos, Franklin Ampy, Jack Frankel
Progestins are utilized as a component of human contraceptives, and enter the environment via wastewater treatment plant effluent. Certain progestins activate fish androgen receptors and cause decreases in fecundity and masculinization of females. In this study, a nest acquisition assay and computer assisted sperm analysis (CASA) was used to examine the effects of levonorgestrel (LNG) on male fathead minnow (Pimephales promelas) reproductive fitness. Males were exposed to 0, 10, or 100ng/L LNG for 14d. Combinations of a control male and a male from one of the treatments were placed into a competitive nesting assay, and time each male spent holding the nest and time spent exhibiting aggressive behaviors were analyzed at 48hrs post-exposure...
December 7, 2017: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/29214481/environmental-levels-of-triclosan-and-male-fertility
#18
Joanna Jurewicz, Michał Radwan, Bartosz Wielgomas, Paweł Kałużny, Anna Klimowska, Paweł Radwan, Wojciech Hanke
Triclosan is a synthetic chemical with broad antimicrobial activity that has been used extensively in consumer products, including personal care products, textiles, and plastic kitchenware, although the exposure which is widespread evidence from human studies is scarce. Our study aims to investigate the relationship between triclosan exposure and male fertility. Triclosan (TCS) urinary concentrations were measured using gas chromatography coupled with tandem mass spectrometry in 315 men recruited from a male reproductive health clinic with normal sperm concentration (≥ 15 mln/ml) (WHO 2010) under 45 years of age...
December 7, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29205543/deep-insemination-with-sex-sorted-cashmere-goat-sperm-processed-in-the-presence-of-antioxidants
#19
Y Qin, S Yang, J Xu, C Xia, X Li, L An, J Tian
Flow cytometrically sex-sorted sperm have been widely used for improving reproductive management in the dairy industry. However, the industrial application of this technology in other domestic species is largely limited by the lower fertility after insemination. The aim of this study was to investigate effects of antioxidant supplementation during the sex-sorting and freezing process on the quality and functions of sorted sperm from Liaoning Cashmere goats. We tested the effects of antioxidant supplementation during sex-sorting and freezing process, including ascorbic acid-2-glucoside AA-2G, glutathione, melatonin and vitamin C (VC), on the quality and functions of sex-sorted fresh and frozen-thawed sperm...
December 3, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/29203468/edc-impact-reduced-sperm-counts-in-rats-exposed-to-human-relevant-mixtures-of-endocrine-disrupters
#20
Marta Axelstad, Ulla Hass, Martin Scholze, Sofie Christiansen, Andreas Kortenkamp, Julie Boberg
Human semen quality is declining in many parts of the world, but the causes are ill-defined. In rodents, impaired sperm production can be seen with early life exposure to certain endocrine disrupting chemicals, but the effects of combined exposures are not properly investigated. In this study, we examined the effects of early exposure to the painkiller paracetamol and mixtures of human relevant endocrine disrupting chemicals in rats. One mixture contained four estrogenic compounds, another contained eight anti-androgenic environmental chemicals, and a third mixture contained estrogens, anti-androgens and paracetamol...
December 4, 2017: Endocrine Connections
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