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https://www.readbyqxmd.com/read/28314792/comparative-profiling-of-small-rnas-of-pig-seminal-plasma-and-ejaculated-and-epididymal-sperm
#1
Cai Chen, Han Wu, Dan Shen, Saisai Wang, Li Zhang, Xiaoyan Wang, Bo Gao, Tianwen Wu, Bichun Li, Kui Li, Chengyi Song
The similarities and differences of small RNAs in seminal plasma, epididymal sperm and ejaculated sperm remain largely undefined. We conducted a systematic comparative analysis of small RNA profiles in pig ejaculated sperm, epididymal sperm and seminal plasma and found that the diversity distribution of small RNA species was generally similar, whereas the abundance of small RNAs is dramatically different across the three libraries; miRNAs and small RNAs derived from rRNA, tRNA, small nuclear RNA, 7SK RNA, NRON RNA and cis-regulatory RNA were enriched in the three libraries, but piRNA was absent...
March 17, 2017: Reproduction: the Official Journal of the Society for the Study of Fertility
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
#2
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/28299421/evaluation-of-sexual-dysfunction-in-female-patients-presenting-with-faecal-incontinence-or-defecation-disorder
#3
Gianluca Pellino, Lisa Ramage, Constantinos Simillis, Oliver Warren, Christos Kontovounisios, Emile Tan, Paris Tekkis
PURPOSE: Female patients with pelvic floor diseases may suffer from several sexual disorders and sexual life impairments. The aim of this manuscript was to evaluate sexual dysfunction in female patients presenting with faecal incontinence (FI) and defecation disorder (DD). METHODS: A retrospective review was performed of a prospectively collected database of sexually active women referred to the pelvic floor clinic, who completed the Pelvic Organ Prolapse/Incontinence Sexual Questionnaire-12 (PISQ-12) at first visit...
March 15, 2017: International Journal of Colorectal Disease
https://www.readbyqxmd.com/read/28296285/elevated-seminal-plasma-myeloperoxidase-is-associated-with-a-decreased-sperm-concentration-in-young-men
#4
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/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/28294377/cumene-hydroperoxide-induced-changes-in-oxidation-reduction-potential-in-fresh-and-frozen-seminal-ejaculates
#6
A Agarwal, R Sharma, R Henkel, S Roychoudhury, S C Sikka, S du Plessis, Y B Sarda, C Speyer, M Nouh, C Douglas, Z Kayali, E S Ahmed, E Sabanegh
Oxidation-reduction potential (ORP) is a newer integrated measure of the balance between total oxidants (reactive oxygen species-ROS) and reductants (antioxidants) that reflects oxidative stress in a biological system. This study measures ORP and evaluates the effect of exogenous induction of oxidative stress by cumene hydroperoxide (CH) on ORP in fresh and frozen semen using the MiOXSYS Analyzer. Semen samples from healthy donors (n = 20) were collected and evaluated for sperm parameters. All samples were then flash-frozen at -80°C...
March 15, 2017: Andrologia
https://www.readbyqxmd.com/read/28294371/icariin-improves-the-sexual-function-of-male-mice-through-the-pi3k-akt-enos-no-signalling-pathway
#7
J Ding, Y Tang, Z Tang, X Zu, L Qi, X Zhang, G Wang
We aimed to investigate the effect and mechanism of icariin on male sexual function. Forty-eight Crl:CD1(ICR) male mice were randomly divided into control, low-, medium- and high-dose icariin group (intragastric administration of 50, 100 and 200 mg/kg/d for 21 days). Mating experiment was then performed at a ratio of 1: 3 (male: female). The mating behaviours of male mice were recorded. The genital indexes and serum testosterone, nitric oxide (NO), hypothalamic dopamine (DA) and 5- hydroxy tryptophan (5-HT) concentrations were measured...
March 15, 2017: Andrologia
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
#8
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/28287188/quality-of-seminal-fluids-varies-with-type-of-stimulus-at-ejaculation
#9
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/28283447/multi-centre-assessment-of-nitroblue-tetrazolium-reactivity-in-human-semen-as-a-potential-marker-of-oxidative-stress
#10
Jaime Gosálvez, Lamberto Coppola, Jose Luis Fernández, Carmen López-Fernández, Alfredo Góngora, Ricardo Faundez, John Kim, Nabil Sayme, Moises de la Casa, Rebeca Santiso, Keith Harrison, Ashok Agarwal, Stephen Johnston, Sandro C Esteves
The nitroblue tetrazolium (NBT) reaction as a tracer of oxidative stress was examined in 707 ejaculates from seven clinics. Semen was initially surveyed by classifying the NBT reaction using a pre-established rank for the Oxisperm® test based on three colourimetric levels: L1, low (n = 141 [20%]); L2, medium (n = 538 [76%]) and L3, high (n = 28 [4%]). L3 was indicative of a high level of superoxide anions. Halosperm® chromatin dispersion assay was used to analyse samples of ejaculates 30 min after ejaculation; no difference was found in DNA fragmentation of L1 or L3; L3 category semen samples incubated for 24 h at 37(o)C showed a significantly faster rate (P < 0...
February 16, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28283446/magnetic-cell-sorting-of-semen-containing-spermatozoa-with-high-dna-fragmentation-in-icsi-cycles-decreases-miscarriage-rate
#11
Pascual Sánchez-Martín, Mónica Dorado-Silva, Fernando Sánchez-Martín, Mercedes González Martínez, Stephen D Johnston, Jaime Gosálvez
This retrospective cohort study investigated whether reproductive outcome could be improved in couples presenting with a high level of sperm DNA fragmentation (SDF) by treating the ejaculate with the magnetic cell sorting (MACS) sperm selection procedure in combination with prior density gradient centrifugation (DGC). Only men presenting with ≥30% sperm DNA in the ejaculate were included because these patients can be potentially treated with MACS to reduce the proportion of sperm presenting DNA damage. In total, 305 couples were included in this study, and from these, 216 women underwent autologous ICSI (AUTO-ICSI), whereas the remaining 89 participated in oocyte donor ICSI (DONOR-ICSI)...
February 24, 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28279680/antioxidant-effect-of-quercetin-in-an-extender-containing-dma-or-glycerol-on-freezing-capacity-of-goat-semen
#12
Afshin Seifi-Jamadi, Ejaz Ahmad, Mahdi Ansari, Hamid Kohram
This study was performed to evaluate the effectiveness of quercetin as a non-enzymatic antioxidant in combination with glycerol or Dimethylacetamide (DMA), on freezability of goat semen. Ejaculates from four healthy mature Mahabadi goats were collected using an artificial vagina. After primary processing, semen was pooled and extended by egg yolk based extender supplemented with different concentrations of quercetin (10 or 20 μM) along with 5% glycerol or DMA. The extended semen was frozen and sperm motility parameters, viability, abnormality, membrane integrity and lipid peroxidation were assessed after thawing...
March 6, 2017: Cryobiology
https://www.readbyqxmd.com/read/28278441/facilitation-of-sexual-behavior-in-ovariectomized-rats-by-estradiol-and-testosterone-a-preclinical-model-of-androgen-effects-on-female-sexual-desire
#13
Sherri Lee Jones, Nafissa Ismail, James G Pfaus
In the United States and Canada, there are no approved treatments for hypoactive sexual desire disorder in postmenopausal women. Testosterone improves female sexual desire in naturally- and surgically-menopausal women maintained on estrogen replacement therapy, and long-term safety data from randomized placebo-controlled clinical trials has yielded promising results. However, the mechanisms associated with its efficacy are not known, and could be addressed using preclinical rodent models; yet there is no systematic evaluation of the effects of estradiol and testosterone on female rat sexual behavior...
February 17, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/28270911/relationship-between-hsp90a-npc2-and-l-pgds-proteins-to-boar-semen-freezability
#14
Julián Valencia, Germán Gómez, Walter López, Henry Mesa, Francisco Javier Henao
BACKGROUND: The purpose of this study was to determine the association of three proteins involved in sperm function on the freezability of porcine semen: the heat shock protein 90 alpha (HSP90a), the Niemann-Pick disease type C2 protein (NPC2), and lipocalin-type prostaglandin D synthase (L-PGDS). Six adult boars (each boar was ejaculated three times, 18 in total) were classified by freezability based on the percentage of functionally competent sperm. The male semen with highest freezability (MHF) and the male semen with lowest freezability (MLF) were centrifuged immediately after collection to separate seminal plasma and spermatozoa to make four possible combinations of these two components and to incubate them for 3 h, adjusting the temperature to 17 °C, to freeze them afterwards...
2017: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/28267049/the-influence-of-methotrexate-treatment-on-male-fertility-and-pregnancy-outcome-after-paternal-exposure
#15
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
https://www.readbyqxmd.com/read/28266821/randomized-crossover-trial-of-amoxapine-versus-vitamin-b12-for-retrograde-ejaculation
#16
Jianlin Hu, Koichi Nagao, Toshihiro Tai, Hideyuki Kobayashi, Koichi Nakajima
OBJECTIVE: To compare the efficacy and safety of amoxapine and vitamin B12 for treating retrograde ejaculation (RE). MATERIALS AND METHODS: Between May 2009 and November 2012, this open-label, randomized, crossover study enrolled 26 men suffering with RE at Department of Reproductive Medicine, Omori Hospital. Patients were randomly allocated into two groups (n=13 each). The amoxapine-B12 group received amoxapine (50 mg daily for 4 weeks, orally) followed (after a 1-week washout period) by vitamin B12 (500 μg three-times daily for 4 weeks)...
March 7, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28262253/sexual-dysfunction-after-inguinal-hernia-repair-with-the-onstep-versus-lichtenstein-technique-a%C3%A2-randomized-clinical-trial
#17
Kristoffer Andresen, Jakob Burcharth, Siv Fonnes, Line Hupfeld, Josephine Philip Rothman, Søren Deigaard, Dorte Winther, Maj-Britt Errebo, Rikke Therkildsen, Dina Hauge, Fritz Søbæk Sørensen, Jesper Bjerg, Jacob Rosenberg
BACKGROUND: Sequelae after inguinal hernia repair include pain-related impairment of sexual function. Pain during intercourse can originate from the scar, scrotum, penis, or during ejaculation. The aim of this study was to investigate if the Onstep technique resulted in better results than the Lichtenstein technique regarding pain-related impairment of sexual function. METHODS: This study was part of the randomized ONLI trial (NCT01753219, Onstep versus Lichtenstein for inguinal hernia repair)...
March 2, 2017: Surgery
https://www.readbyqxmd.com/read/28261848/impact-of-physical-activity-on-patient-self-reported-outcomes-of-lifelong-premature-ejaculation-patients-results-of-a-prospective-randomised-sham-controlled-trial
#18
M F Kilinc, Y Aydogmus, Y Yildiz, O G Doluoglu
Previous studies have investigated whether physical activity increases serotonin hormone levels. Serotonin receptor dysfunction is one of the frequently accused factors of premature ejaculation (PE). Nevertheless, no studies up to date have demonstrated that the association between physical activity and premature ejaculation. We aimed to investigate the relationship between physical activity and PE and determine whether moderate physical activity might delay ejaculation time or be an alternative treatment for PE...
March 6, 2017: Andrologia
https://www.readbyqxmd.com/read/28261845/stenotrophomonas-maltophilia-isolated-from-prostatic-fluid-as-an-infertility-factor-in-a-male-dog
#19
A Domosławska, S Zduńczyk, A Jurczak, T Janowski
The aim of this case was to describe very rare infection of canine prostate gland with Stenotrophomonas maltophilia which had influence on male fertility. The bacterium was cultured from third fraction of the ejaculate collected by manual manipulation. The sperm concentration and motility parameters were evaluated by Hamilton-Thorne Sperm Analyser, version IVOS 12.3, sperm morphology by Diff-Quick staining and live/dead spermatozoa by eosin/nigrosin staining. After 3 weeks of treatment with targeted antibiotic, ciprofloxacin, there was no bacterial growth in prostate fluid...
March 6, 2017: Andrologia
https://www.readbyqxmd.com/read/28259157/social-dominance-explains-within-ejaculate-variation-in-sperm-design-in-a-passerine-bird
#20
Alfonso Rojas Mora, Magali Meniri, Sabrina Ciprietti, Fabrice Helfenstein
BACKGROUND: Comparative studies suggest that sperm competition exerts stabilizing selection towards an optimal sperm design - e.g., the relative size and covariation of different sperm sections or a quantitative measure of sperm shape - that maximizes male fertility, which results in reduced levels of within-male variation in sperm morphology. Yet, these studies also reveal substantial amounts of unexplained within-ejaculate variance, and the factors presiding to the maintenance of such within-male variation in sperm design at the population level still remain to be identified...
March 4, 2017: BMC Evolutionary Biology
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