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https://www.readbyqxmd.com/read/28314435/effect-of-green-tea-camellia-sinensis-extract-and-pre-freezing-equilibration-time-on-the-post-thawing-quality-of-ram-semen-cryopreserved-in-a-soybean-lecithin-based-extender
#1
Mahdieh Mehdipour, Hossein Daghigh Kia, Abouzar Najafi, Hossein Vaseghi Dodaran, Olga García-Álvarez
The aim of this study was to determine the effect of Camellia sinensis extract as antioxidant supplement and pre-freezing equilibration times in a soybean lecithin extender for freezing ram semen. In this study, a total of 20 ejaculates were collected from four Ghezel rams and diluted with extenders (1.5% soybean lecithin, 7% glycerol) containing no supplements (control) and Camellia sinensis extract (5, 10, and 15 mg/L) and cryopreserved, immediately after thermal equilibrium was reached at 5 °C (0 h), or 4 h after equilibration...
December 2016: Cryobiology
https://www.readbyqxmd.com/read/28302333/analysis-of-common-carp-cyprinus-carpio-sperm-motility-and-lipid-composition-using-different-in-vitro-temperatures
#2
Hadiseh Dadras, Sabine Sampels, Amin Golpour, Viktoriya Dzyuba, Jacky Cosson, Borys Dzyuba
In fish, sperm quality is frequently associated with sperm motility variables. The response of sperm motility to different temperatures varies among species and plasma membrane lipid composition may contribute to variations in findings in previous research. In the present study, sperm motility and lipid composition were analysed between motile or immotile carp Cyprinus carpio sperm at different in vitro temperatures (4, 14 and 24°C). The duration of the period over which sperm motility is sustained was longer at 4°C compared with 14 and 24°C; while sperm velocity was greatest at 24°C...
March 6, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28296285/elevated-seminal-plasma-myeloperoxidase-is-associated-with-a-decreased-sperm-concentration-in-young-men
#3
J M Pullar, A C Carr, S M Bozonet, P Rosengrave, A J Kettle, M C M Vissers
Myeloperoxidase is a major neutrophil protein which generates oxidants that are highly reactive, and if present in seminal fluid, could be potentially damaging to spermatozoa. We recruited young males aged 18-35 years, unscreened for fertility status, for a pilot study measuring seminal plasma myeloperoxidase. On three occasions, over a 3-month period, we measured parameters of semen quality and correlated these with seminal myeloperoxidase protein and activity. After baseline measurement, participants were supplemented daily with 250 mg of vitamin C, a potent scavenger of reactive oxygen species with antiinflammatory activities...
March 10, 2017: Andrology
https://www.readbyqxmd.com/read/28295662/chilled-and-post-thaw-storage-of-sperm-in-different-goldfish-types
#4
G Bernáth, I Ittzés, Z Szabó, Á Horváth, S Krejszeff, J Lujić, L Várkonyi, B Urbányi, Z Bokor
The effective storage time of sperm after stripping (for 48 hr in 6-hr intervals) and after thawing (for 6 hr in 2-hr intervals) in Black moor, Oranda and Calico goldfish types was investigated. Variations in sperm density were also measured in all lines. The efficiency of a sperm cryopreservation method formerly developed for common carp was recorded in all three goldfish lines. Motility parameters ((pMOT, %), curvilinear velocity (VCL, μm/s) and straightness (STR, %)) of Black moor sperm did not decrease significantly during 48 hr of storage...
March 12, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28292651/human-exposure-to-endocrine-disrupting-chemicals-effects-on-the-male-and-female-reproductive-systems
#5
REVIEW
Stavros Sifakis, Vasilis P Androutsopoulos, Aristeidis M Tsatsakis, Demetrios A Spandidos
Endocrine disrupting chemicals (EDCs) comprise a group of chemical compounds that have been examined extensively due to the potential harmful effects in the health of human populations. During the past decades, particular focus has been given to the harmful effects of EDCs to the reproductive system. The estimation of human exposure to EDCs can be broadly categorized into occupational and environmental exposure, and has been a major challenge due to the structural diversity of the chemicals that are derived by many different sources at doses below the limit of detection used by conventional methodologies...
March 6, 2017: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/28292616/strong-adherence-to-a-healthy-dietary-pattern-is-associated-with-better-semen-quality-especially-in-men-with-poor-semen-quality
#6
Elsje C Oostingh, Régine P M Steegers-Theunissen, Jeanne H M de Vries, Joop S E Laven, Maria P H Koster
OBJECTIVE: To study associations between periconceptional dietary patterns and semen quality parameters. DESIGN: Prospective periconception cohort study. SETTING: Tertiary hospital. PATIENT(S): One hundred and twenty-nine male partners of pregnant women who participated in the Rotterdam Periconception Cohort (Predict study). INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Semen quality parameters-ejaculate volume, sperm concentration, total sperm count, progressive motility, immotile sperm, and total motile sperm count (TMSC)...
March 11, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28292009/selenium-and-a-newly-synthesized-thiocyanoacetamide-reduce-doxorubicin-gonadotoxicity-in-male-rat
#7
Marwa Boussada, Ridha Ben Ali, Azaa Ben Said, Khouloud Bokri, Azaiez Ben Akacha, Chedli Dziri, Michèle Véronique El May
Despite its deleterious effect on healthy cells and highly regenerating cells such as spermatozoa, Doxorubicin (DOX) is still one of the most used anticancer drugs in the last decades. The present work aimed to investigate the ability of the selenium (Se) and the thiocyanoacetamide (T) to reduce DOX toxicity in gonad. Adult male rats were treated with DOX intravenously (i.v.) at 3.7mg/kg/week associated with Se intragastrically (i.g.) at 0.2mg/kg/day or with T at 10mg/kg/day i.g. After 47days of treatment, sperm quality, biochemical parameters, blood cell count and histological changes in liver, testis and epididymis were assessed...
March 10, 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28288491/effect-of-traditional-treatment-of-diabetes-mellitus-with-xanthosoma-sagittifolium-on-the-male-reproductive-system-of-alloxan-induced-diabetic-wistar-rats
#8
Olayinka A Oridupa, Oluyemisi F Folasire, Adedotun J Owolabi, Oluwasanmi Aina
The management of diabetes mellitus (DM) targets glycemic control as well as prevention or reversal of other complications associated with the metabolic disorder. One of such complications is the infertility which has been traced to oxidative stress and DNA damage caused by DM. In this study, experimentally-induced diabetic male Wistar rats were fed with Xanthosoma sagittifolium (cocoyam) for 14 days and its effect on sperm morphology and characteristics, as well as histology of the testes were assessed. X...
March 13, 2017: Drug Research
https://www.readbyqxmd.com/read/28288428/effects-of-roundup-formulations-on-biochemical-biomarkers-and-male-sperm-quality-of-the-livebearing-jenynsia-multidentata
#9
Jessica Andrea Albañil Sánchez, Antonio Sergio Varela, Carine Dahl Corcini, Janaina Camacho da Silva, Ednei Gilberto Primel, Sergiane Caldas, Roberta Daniele Klein, Camila De Martinez Gaspar Martins
Roundup(®) formulations are the most consumed glyphosate-based herbicides in the world. When applied, they may reach water bodies and exert toxicity toward non-target species. This study evaluated and compared the effects of different variations of Roundup on biochemical biomarkers as oxidative parameters and Acethylchorinesterase (AChE) activity, and sperm quality of the livebearing Jenynsia multidentata. Fish were acutely (96 h) exposed to Roundup Original(®) (RO), Roundup Transorb(®) (RT) and Roundup WG(®) (RWG) at 0...
March 1, 2017: Chemosphere
https://www.readbyqxmd.com/read/28287188/quality-of-seminal-fluids-varies-with-type-of-stimulus-at-ejaculation
#10
E Jeannerat, F Janett, H Sieme, C Wedekind, D Burger
The theory of ejaculate economics was mainly built around different sperm competition scenarios but also predicts that investments into ejaculates depend on female fecundity. Previous tests of this prediction focused on invertebrates and lower vertebrate, and on species with high female reproductive potential. It remains unclear whether the prediction also holds for polygynous mammals with low female reproductive potential (due to low litter size and long inter-birth intervals). We used horses (Equus caballus) to experimentally test whether semen characteristics are adjusted to the oestrous cycle of the mare a stallion is exposed to during few moments before ejaculation...
March 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28285951/potential-role-of-green-tea-catechins-in-the-management-of-oxidative-stress-associated-infertility
#11
REVIEW
Shubhadeep Roychoudhury, Ashok Agarwal, Gurpriya Virk, Chak-Lam Cho
Reactive oxygen species (ROS) are present in low concentrations in the genital tracts of males and females. Excessive ROS lead to oxidative stress, which damages DNA, lipids and proteins. Such molecular changes result in compromised vitality, increased morphological defects and decreased sperm motility in the male. In the female, oxidative stress interferes with oocyte maturation, and may inhibit in-vitro maturation of the oocyte. Recently, green tea supplementation has been reported to possess properties that may improve the quality of male and female gametes largely due to the ability of catechin polyphenols to quench ROS...
February 27, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28285567/increased-scf-in-follicular-fluid-and-granulosa-cells-positively-correlates-with-oocyte-maturation-fertilization-and-embryo-quality-in-humans
#12
Jun Tan, Yang Zou, Xing-Wu Wu, Li-Feng Tian, Qiong Su, Jin-Xia He, Zhi-Hui Huang, Yan Zhao, Li-Ping Wu, Qiong-Fang Wu
Stem cell factor (SCF), which is derived from granulosa cells (GCs), plays a key role in the process of follicular development and oocyte maturation. The present study aimed to explore whether the levels of SCF in follicular fluid (FF) and GCs can be used as a potential marker for predicting oocyte developmental potential. Follicular fluid and GC samples from 150 female patients undergoing intracytoplasmic sperm injection were collected in this study. The SCF concentrations in FFs and SCF messenger RNA (mRNA) in GCs were evaluated by using enzyme-linked immunosorbent assay and real-time polymerase chain reaction, respectively...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28283671/obesity-energy-balance-and-spermatogenesis
#13
Pedro Fontes Oliveira, Mario Sousa, Branca M Silva, Mariana P Monteiro, Marco G Alves
Obesity has grown to pandemic proportions. It affects an increasing number of children, adolescents and young adults exposed to the silent co-morbidities of this disorder for a longer period. Infertility has arisen as one important comorbidity associated with the energy dysfunction promoted by obesity. Spermatogenesis is a highly regulated process that is determined by specific energetic requirements. The reproductive potential of males relies on hormonal-dependent and independent stimuli that control sperm quality...
March 10, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/28283266/vasectomy-reversal-semen-analysis-new-reference-ranges-predict-pregnancy
#14
Ahmad Majzoub, Nicholas N Tadros, A Scott Polackwich, Rakesh Sharma, Ashok Agarwal, Edmund Sabanegh
OBJECTIVE: To study the semen analysis values required to cause a pregnancy after vasectomy reversal (VR). Vasectomy reversal is increasingly performed on men who wish to regain fertility after elective sterilization. Despite a thorough understanding of predictors of vasal patency after surgery, little is known about the patients' semen parameters and pregnancy potential. DESIGN: Retrospective case-control study. SETTING: Tertiary-care hospital...
March 7, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28278659/chromatographic-and-spectral-studies-of-jetsam-and-archived-ambergris
#15
Steven J Rowland, Paul A Sutton
We describe determination of the dichloromethane-soluble components of 12 samples of the natural product, ambergris, using capillary gas chromatography-mass spectrometry (GC-MS). Ambergris is produced in vivo in about 1% of Sperm whales and is used in perfumery and for odour fixation. Whilst descriptions of ambergris chemistry appeared until about 40 years ago, few accounts of analyses of whole extracts of multiple samples of ambergris by GC-MS have been published before. As expected, our analyses revealed that the major component (up to 97% of the dichloromethane-soluble material) was ambrein, with co-occurring, variable proportions of steroids...
February 16, 2017: Natural Product Research
https://www.readbyqxmd.com/read/28278362/testing-the-phenotype-linked-fertility-hypothesis-in-the-presence-and-absence-of-inbreeding
#16
Wolfgang Forstmeier, Malika Ihle, Pavlína Opatová, Katrin Martin, Ulrich Knief, Jana Albrechtová, Tomáš Albrecht, Bart Kempenaers
The phenotype-linked fertility hypothesis suggests that females can judge male fertility by inspecting male phenotypic traits. This is because male sexually selected traits might correlate with sperm quality if both are sensitive to factors that influence male condition. A recent meta-analysis found little support for this hypothesis, suggesting little or no shared condition dependence. However, we recently reported that in captive zebra finches (Taeniopygia guttata) inbreeding had detrimental effects both on phenotypic traits and on measures of sperm quality, implying that variation in inbreeding could induce positive covariance between indicator traits and sperm quality...
March 9, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28277110/effect-of-normal-sperm-morphology-rate-nsmr-on-clinical-outcomes-for-rescue-icsi-r-icsi-patients
#17
Mingzhao Li, Hui Wang, Wei Li, Juanzi Shi
PURPOSE: To investigate whether the normal sperm morphology rate (NSMR) can affect the clinical outcomes of rescue-ICSI(R-ICSI) patients. METHODS: Based on different NSMR, the patients were divided into two groups as follows: NSMR < 4% and NSMR ≥ 4% group. Main outcomes compared were fertilization, cleavage, normal fertilization, high-quality embryo, transferrable embryo, no transferrable embryo cycles, implantation, clinical pregnancy and abortion rate...
March 3, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28274591/relationships-between-seminal-plasma-metals-metalloids-and-semen-quality-sperm-apoptosis-and-dna-integrity
#18
Yi-Xin Wang, Peng Wang, Wei Feng, Chong Liu, Pan Yang, Ying-Jun Chen, Li Sun, Yang Sun, Jing Yue, Long-Jie Gu, Qiang Zeng, Wen-Qing Lu
This study aimed to investigate the relationships between environmental exposure to metals/metalloids and semen quality, sperm apoptosis and DNA integrity using the metal/metalloids levels in seminal plasma as biomarkers. We determined 18 metals/metalloids in seminal plasma using an inductively coupled plasma-mass spectrometry among 746 men recruited from a reproductive medicine center. Associations of these metals/metalloids with semen quality (n = 746), sperm apoptosis (n = 331) and DNA integrity (n = 404) were evaluated using multivariate linear and logistic regression models...
March 5, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28274295/quality-of-pinzgau-bull-spermatozoa-following-different-periods-of-cryostorage
#19
P Chrenek, E Spaleková, L Olexikova, A Makarevich, E Kubovicova
The aim of this work was to examine the influence of cryostorage duration of Pinzgau bull's insemination doses (IDs) on some sperm traits. The IDs were frozen by a slow freezing method and stored in liquid nitrogen for different periods: less than 8 years (group 1), 8-13 years (group 2) and 14-18 years (group 3). Motility (CASA), pathological sperm rate (Giemsa staining), apoptotic (Yo-Pro-1-positive) and necrotic (propidium iodide-positive) cell occurrence and fertilizing ability (penetration/fertilization test) of spermatozoa were evaluated post-thaw...
March 9, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28267049/the-influence-of-methotrexate-treatment-on-male-fertility-and-pregnancy-outcome-after-paternal-exposure
#20
Anne Grosen, Jens Kelsen, Christian Lodberg Hvas, Emanuelle Bellaguarda, Stephen B Hanauer
BACKGROUND: Inflammatory bowel disease incidence peaks during the reproductive years. Methotrexate (MTX) is frequently used for inflammatory bowel disease, but its use during pregnancy is contraindicated in women because of teratogenic effects. The aim of this review is to investigate the influence of MTX on male fertility and pregnancy outcomes after paternal MTX exposure. METHODS: A systematic literature search was performed by applying 2 focus areas, "methotrexate" and "male fertility or pregnancy outcome...
April 2017: Inflammatory Bowel Diseases
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