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Sperm quality

Erin L Macartney, Angela J Crean, Russell Bonduriansky
It is now recognized that post-copulatory traits, such as sperm and ejaculate production can impose metabolic costs, and such traits are therefore expected to exhibit condition-dependent expression, whereby, low condition individuals experience a greater marginal cost of investment compared to high condition individuals. Ejaculates are especially costly in species where males invest in offspring quality through nutrient-rich spermatophores or other seminal nuptial gifts. However, recent evidence shows that, in species where males do not provision females or offspring, males can still influence offspring development through paternal effects mediated by epigenetic factors, such as non-coding RNAs, DNA methylation and chromatin structure...
June 14, 2018: Heredity
Clare Nevin, Lauren McNeil, Nessar Ahmed, Chris Murgatroyd, Daniel Brison, Michael Carroll
Glycation is the non-enzymatic reaction between reducing sugars, such as glucose, and proteins, lipids or nucleic acids, producing Advanced Glycation End (AGE) products. AGEs, produced during natural senescence as well as through lifestyle factors such as diet and smoking, are key pathogenic compounds in the initiation and progression of diabetes. Importantly, many of these factors and conditions also have influence on male fertility, affecting sperm count and semen quality, contributing to the decreasing trend in male fertility...
June 13, 2018: Scientific Reports
Paula Domingo, Maite Olaciregui, Noelia González, Ignacio DE Blas, Lydia Gil
The purpose of this research was to assess whether the presence of seminal plasma (SP) can improve sperm quality of rabbit spermatozoa stored at 16ºC for 72 hours and moreover evaluate the cryoprotectant effects of glycerol, N-N-Dimethylformamide (DMF), and N-methyl-2-pyrrolidone (NMP). Semen samples were pooled and divided in eight fractions. Four of them were diluted with INRA (extender A), INRA with 6% glycerol (extender B), INRA with 6% DMF (extender C), or INRA with 6% NMP (extender D), respectively. The other four fractions were centrifuged, and the supernatant was removed in order to eliminate SP...
June 13, 2018: Experimental Animals
Dongmei Wu, Lang Chen, Fayuan Ji, Yang Si, Hongbin Sun
OBJECTIVE: To investigate the effects of antiepileptic drugs (AEDs; oxcarbazepine [OXC], levetiracetam [LEV], and lamotrigine [LTG]) on semen quality, sexual function, and sex hormones in male adults with epilepsy. METHODS: Individual treatment with OXC, LEV, or LTG was randomly assigned to 38 newly diagnosed male adult patients with epilepsy. Semen quality and sex hormones were measured before treatment and 6 months after taking the medicine. A questionnaire was administered using the International Index of Erectile Function Scale-5 and the Premature Ejaculation Diagnostic Tool Self-Assessment Scale to evaluate sexual function, followed by an analysis of the comparison between the treated patients and healthy volunteers (healthy controls) as well as the changes and differences between the patients themselves before and after treatment...
June 11, 2018: Epilepsia
Houshang Nouri, Kamal Shojaeian, Ghasem Jalilvand, Hamid Kohram
The objective was to assess the influence of pomegranate seed oil supplementation on the quality of fresh, cooled and frozen-thawed Arabian breed stallion semen. Eight stallions (n = 4 per group) received their normal diet (control group) or normal diet top dressed with 200 ml of pomegranate seed oil (PSO group). Semen was collected every fifteen days for 90 days. Stallions were reversed across the treatments after a sixty-day interval. In cooled and stored condition (2, 12 and 24 hr), spermatozoa motion characteristics, membrane integrity, viability, morphology and lipid peroxidation were analysed...
June 11, 2018: Reproduction in Domestic Animals, Zuchthygiene
Nathalie Rives, Aurélie Rives, Christine Rondanino, Mireille Castanet, Ariane Cuny, Louis Sibert
Spermatozoa have occasionally been identified in ejaculate of adult Klinefelter syndrome (KS) patients but very exceptionally in KS adolescents. Spermatozoa can also be retrieved in testicular tissue of KS adolescents. The testis may also harbor spermatogonia and noncompletely differentiated germ cells. Neither clinical features nor hormonal parameters could predict germ cell recovery in KS adults or adolescents. No predictive factors can actually demonstrate that early diagnosis of KS would allow increasing the chance of sperm retrieval even if it has been suggested that semen quality may decline with age in KS patients...
2018: Endocrine Development
Erika Aline Ribeiro Dias, Suzane Peres Campanholi, Guilherme Fazan Rossi, Camila de Paula Freitas Dell'Aqua, José Antonio Dell'Aqua, Frederico Ozanam Papa, Mariana Furtado Zorzetto, Claudia Cristina Paro de Paz, Letícia Zoccolaro Oliveira, Maria Eugênia Zerlotti Mercadante, Fabio Morato Monteiro
Semen cryopreservation comprises different steps, among them are the cooling and freezing rates which significantly influence the quality of thawed sperm. Different systems with variable freezing rates are used for freezing bull semen in the field, with a consequence of variable success rates. The objective of this study was to compare different systems for freezing bull semen in the field. Five cooling methods of semen and two methods for the subsequent freezing phase (5 × 2 factorial scheme) were used...
May 23, 2018: Animal Reproduction Science
Viviane Maria Codognoto, Paulo Henrique Yamada, Rúbia Alves Schmith, Felipe Rydygier de Ruediger, Caroline Scott, Patrícia de Faria Lainetti, Suzane Brochine, Camila de Paula Freitas-Dell'Aqua, Fabiana Ferreira de Souza, Eunice Oba
The objective of the present study was to describe the proteins from the seminal plasma of buffalo and correlate these proteins with sperm motility. Ejaculates from sixteen Murrah buffalo were used. Semen collection was performed by electroejaculation, and the ejaculate was evaluated by macroscopic (volume) and microscopic analysis (subjective motility and vigor, as well as sperm concentration). After the analysis, the samples were centrifuged (800g for 10 min and 10,000 for 30 min at 4 °C), and the supernatant (seminal plasma) was used to determine total protein concentration by the Bradford method...
June 2, 2018: Animal Reproduction Science
Ulrike Scherer, Ralph Tiedemann, Ingo Schlupp
OBJECTIVE: We investigated the potential role of indirect benefits for female mate preferences in a highly promiscuous species of live-bearing fishes, the sailfin molly Poecilia latipinna using an integrative approach that combines methods from animal behavior, life-history evolution, and genetics. Males of this species solely contribute sperm for reproduction, and consequently females do not receive any direct benefits. Despite this, females typically show clear mate preferences. It has been suggested that females can increase their reproductive success through indirect benefits from choosing males of higher quality...
June 8, 2018: BMC Research Notes
Matteo Tesi, Chiara Sabatini, Iacopo Vannozzi, Gloria Di Petta, Duccio Panzani, Francesco Camillo, Alessandra Rota
Although semen analysis is routinely used to evaluate the male reproductive potential in the canine species, only a few authors have attempted to relate semen characteristics to donor traits, such as age or weight, and fertility. This study evaluated the effects of dogs' age (young: 0-24 months, adult: 25-84 months, old: >84 months), size (small: <15 kg, medium: 16-40 kg, large: >40 kg) and reason for semen collection (evaluation, artificial insemination, cryopreservation or research purposes) on the seminal characteristics and related the main seminal characteristics with fresh AI results...
May 17, 2018: Theriogenology
J P Kastelic, G Rizzoto, J Thundathil
Several structural and functional features keep bull testes 2°C to 6°C below body temperature, essential for the production of morphologically normal, motile and fertile sperm. The testicular vascular cone (TVC), located above the testis, consists of a highly coiled testicular artery surrounded by a complex network of small veins (pampiniform plexus). The TVC functions as a counter-current heat exchanger to transfer heat from the testicular artery to the testicular vein, cooling blood before it enters the testis...
June 2018: Animal: An International Journal of Animal Bioscience
Durgesh Murhari Golher, Arumugam Kumaresan, Kaustubh Kishor Saraf, Shivani Chhillar, Samiksha Nayak, Utkarsh K Tripathi, Chavan Nitin Bhaskar, Surender Singh Lathwal, Tushar Kumar Mohanty
Seasonality in reproduction and effects of climatic variables on testicular cytology and semen quality in bucks reared under subtropical climatic conditions were not well understood. In the present study, using testicular cytology, semen evaluation and melatonin concentrations assessed over a period of 1 year, we report that bucks reared under subtropical climatic conditions did not show seasonality in reproduction. Climatic variables including temperature, relative humidity, temperature-humidity index (THI), sunshine hours and day length were recorded daily during the whole period of experimentation (one complete year)...
June 7, 2018: International Journal of Biometeorology
Nahid Maleki-Saghooni, Khadijeh Mirzaeii, Hossein Hosseinzadeh, Ramin Sadeghi, Morvarid Irani
Objective: We performed this systematic review and meta-analysis study to determine saffron ( Crocus sativus ) effectiveness and safety in male infertility problems. Materials and Methods: The databases PubMed, Scopus, Cochrane, Google Scholar, SID, IranMedex and Magiran until July 2016 and reference section of relevant articles, were searched to find both English and Persian clinical trials on male infertility issues that used saffron as medical treatment. Also, the quality of these trials was evaluated by Oxford Center for Evidence Based Medicine checklist...
May 2018: Avicenna Journal of Phytomedicine
Mariana Camargo, Paula Intasqui, Ricardo Pimenta Bertolla
Seminal plasma is a complex fluid comprised of secretions from the seminal vesicles, the prostate, bulbourethral glands and from the seminiferous tubule lumen / epididymides / vasa deferentia . While it has been established that seminal plasma serves not only as a medium to carry, protect, and nourish sperm after ejaculation up to fertilization, but also as a functional modulator of sperm function, there is still a need to properly characterize the molecular make-up of seminal plasma in fertile men, and to understand how this is altered in different causes of male infertility...
2018: Basic and Clinical Andrology
Abouzar Najafi, Ramezan Ali Taheri, Mahdieh Mehdipour, Gholamreza Farnoosh, Felipe Martínez-Pastor
Antioxidants may ameliorate the effects of the freeze-thawing stress on cryopreserved spermatozoa. Lycopene is an effective antioxidant yet to be tested for rooster sperm cryopreservation and nanoliposomes, a technology recently applied to sperm cryopreservation, could improve conservation and antioxidant delivery to spermatozoa. Therefore, we evaluated the effect of 0.1, 0.2, and 0.3 mM lycopene and lycopene-loaded nanoliposomes (LnL) on the cryopreservation of rooster sperm in Beltsville extender. Post-thawing evaluation included sperm motility, membrane integrity, abnormal morphology, mitochondria activity, apoptotic status, malondialdehyde (MDA) and antioxidant activities: Glutathione peroxidase (GPx), superoxide dismutase (SOD) and total antioxidant capacity (TAC)...
May 25, 2018: Animal Reproduction Science
Marta Gianzo, Itziar Urizar-Arenaza, Iraia Muñoa-Hoyos, Zaloa Larreategui, Nicolás Garrido, Luis Casis, Jon Irazusta, Nerea Subirán
Angiotensin-converting enzyme functions in the male reproductive system, but the extent of its function in reproduction is not fully understood. The primary objective of this work was to investigate the relationship between the testicular isoform of angiotensin-converting enzyme present in human spermatozoa and semen parameters, human embryo quality, and assisted reproduction success. A total of 81 semen samples and 635 embryos from couples undergoing oocyte donation cycles at the IVI Bilbao Clinic were analyzed...
June 5, 2018: Asian Journal of Andrology
Daniela Paes de Almeida Ferreira Braga, Rose Marie Massaro Melamed, Amanda Souza Setti, Bianca Ferrarini Zanetti, Rita de Cássia Sávio Figueira, Assumpto Iaconelli, Edson Borges
PURPOSE: The purpose of this study is to evaluate the impact of the patient's faith, religion, and spirituality on the outcomes of intracytoplasmic sperm injection (ICSI) cycles. MATERIALS AND METHODS: Eight hundred and seventy-seven patients received a questionnaire containing information on faith, religiosity, and spirituality and the results of the questionnaires were correlated with ICSI outcomes. Patients stated to be Catholic (n = 476), spiritists (n = 93), Evangelical (n = 118), and other religion (n = 32), and 78 did not identify with any religious group...
June 6, 2018: Journal of Psychosomatic Obstetrics and Gynaecology
F Dardmeh, H Alipour, H I Nielsen, S Rasmussen, G Van Der Horst, P Gazerani
Aims The association between low fertility potential and an overweight is well recognized. In addition, a link between pain and overweight condition has been identified. However, it is not known whether overweight pain patients present any alterations in fertility potentials. Hence, the current study provided a profounder vision into the possible relation between an overweight condition, chronic musculoskeletal pain, and fertility potential in overweight male patients. Methods This "observational study" was based on 10 overweight chronic pain patients (OP and 10 healthy matched controls (OC) from the referrals to the orthopedic department at Aalborg University Hospital, Aalborg, Denmark...
December 29, 2017: Scandinavian Journal of Pain
Favián Treulen, María Elena Arias, Luis Aguila, Pamela Uribe, Ricardo Felmer
When the mitochondria of somatic cells are exposed to pathological calcium overload, these trigger mitochondrial permeability transition (MPT) leading to mitochondrial dysfunction and cell death. Cryopreservation procedures expose mammalian spermatozoa to physical and chemical stressors, which affect plasma membrane integrity and induce a pathological calcium overload that gradually promotes loss of sperm quality and ultimately function. Although several studies highlight the role of calcium in many physiological and pathological processes, the MPT induced by an intracellular calcium increase and its effect on the cell quality of mammalian spermatozoa are unknown...
June 1, 2018: Cryobiology
M Slowinska, E Liszewska, S Judycka, M Konopka, A Ciereszko
The extensive use of artificial insemination in turkeys has led to the development of in vitro semen storage. However, fertility rates from liquid stored and frozen/thawed turkey semen are still unsatisfactory. The aim of the study was to assess spermatozoa viability, mitochondrial membrane potential (MMP), and reactive oxygen species production (ROS) in liquid stored and cryopreserved turkey semen with the use of flow cytometry. Moreover, motility and adenosine triphosphate (ATP) content in sperm were monitored at the same time to link flow cytometry data with sperm movement and energetics...
June 1, 2018: Poultry Science
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