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Sperm DNA fragmentation

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https://www.readbyqxmd.com/read/28220615/identification-of-sperm-morphometric-subpopulations-in-cooled-stored-canine-sperm-and-its-relation-with-sperm-dna-integrity
#1
M Urbano, I Ortiz, J Dorado, M Hidalgo
The aims of this study were to (i) identify different morphometric subpopulations in cooled-stored canine sperm and their patterns of distribution during cool-storage for up to 240 hr and (ii) determine whether or not morphometric sperm subpopulations (sP) are related to sperm DNA integrity. For that purpose, morphometric parameters were analysed by computer-assisted sperm analysis (CASA) and sperm DNA fragmentation (sDFi) using the sperm Halomax test. Four morphometric sperm heads subpopulations were identified: sP1 (large and rounded), sP2 (large and elongated), sP3 (small and rounded) and sP4 (small and elongated)...
February 20, 2017: Reproduction in Domestic Animals, Zuchthygiene
https://www.readbyqxmd.com/read/28217940/dietary-omega-3-polyunsaturated-fatty-acids-induce-plasminogen-activator-activity-and-dna-damage-in-rabbit-spermatozoa
#2
A N Kokoli, S N Lavrentiadou, I A Zervos, M P Tsantarliotou, M P Georgiadis, E A Nikolaidis, N Botsoglou, C M Boscos, I A Taitzoglou
The aim of this study was to determine the effect(s) of dietary omega-3 polyunsaturated fatty acids (ω-3 PUFA) on rabbit semen. Adult rabbit bucks were assigned to two groups that were given two diets, a standard diet (control) and a diet supplemented with ω-3 PUFA. Sperm samples were collected from all bucks with the use of an artificial vagina in 20-day intervals, for a total period of 120 days. The enrichment of membranes in ω-3 PUFA was manifested by the elevation of the 22:5 ω-3 (docosapentaenoic acid [DPA]) levels within 40 days...
February 20, 2017: Andrologia
https://www.readbyqxmd.com/read/28216914/the-quality-of-sperm-preparation-medium-affects-the-motility-viability-and-dna-integrity-of-human-spermatozoa
#3
Fatemeh Anbari, Iman Halvaei, Ali Nabi, Shahin Ghazali, Mohammad Ali Khalili, Lars Johansson
AIM: The goal was to compare the effects of three different sperm preparation media on sperm motility, viability, and DNA integrity of semen samples from normozoospermic men. METHODS: A total of 15 normozoospermic males were included in the study. The semen analysis (SA) was performed in accordance with the WHO guidelines (2010). After SA, each sample was divided into three aliquots, and swim-up was performed with three different sperm preparation media (Sperm Preparation Media, Origio, Denmark; Ham's F10, Biochrome, Berlin, Germany; and VitaSperm™, Innovative Biotech, Iran)...
October 2016: Journal of Human Reproductive Sciences
https://www.readbyqxmd.com/read/28214066/identification-of-g-170g-a-and-g-332g-a-mutations-in-exon-3-of-leptin-gene-bcnl-and-cail-and-their-association-with-semen-quality-and-testicular-dimensions-in-sanjabi-rams
#4
Roya Bakhtiar, Alireza Abdolmohammadi, Hadi Hajarian, Zahra Nikousefat, Davood Kalantar-Neyestanaki
The purpose of this study was to investigate leptin gene polymorphisms and their relationships with the characteristics of sperm quality and testicular dimensions. Semen samples were collected from 96 Sanjabi rams during autumn and spring seasons over two years. Simultaneously, the dimensions of length, width and scrotal circumference were measured. Blood samples were taken from the jugular vein to extract DNA. PCR was performed to amplify a 463bp fragment including exon 3 of leptin gene. PCR products were digested by Bcnl and Cail restriction enzymes to identify 170G>A and 332G>A mutations in exon 3, respectively...
February 4, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/28205391/influence-of-iodine-in-excess-on-seminiferous-tubular-structure-and-epididymal-sperm-character-in-male-rats
#5
Amar K Chandra, Arijit Chakraborty
Excess iodine induced public health problems are now emerging in many iodine sufficient regions for indiscriminate intake of iodine through various iodized products. It has been reported that excess iodine can disrupt overall male reproductive physiology by generating oxidative stress in the testis. However, information on the possible effect of iodine in excess on spermatozoa found less. In the present investigation flow cytometric techniques and scanning electron microscopy (SEM) have been used to study the spermatozoal functional as well as structural status under the influence of excess iodine; generation of ROS in the spermatozoa as evident by DCFDA, altered acrosomal integrity as observed by fluorescence lectin staining method and depolarized mitochondrial membrane potential (ΔΨm ) noticed by JC-1 staining...
February 16, 2017: Environmental Toxicology
https://www.readbyqxmd.com/read/28187743/the-influence-of-macro-and-microelements-in-seminal-plasma-on-diluted-boar-sperm-quality
#6
Maja Zakošek Pipan, Janko Mrkun, Breda Jakovac Strajn, Katarina Pavšič Vrtač, Janko Kos, Anja Pišlar, Petra Zrimšek
BACKGROUND: Growing evidence indicates that macro- and microelements in the seminal plasma of humans and various domestic animals are of great importance due to their roles in sperm metabolism, function, survival and oxidative stress. In the present study, we therefore determined the concentrations of macro- and microelements in fresh boar seminal plasma and their relation to sperm quality parameters after 3 days of liquid storage was assessed. Twenty ejaculates from eight boars were collected, and semen volume, concentration, sperm motility, morphology, tail membrane integrity, plasma membrane permeability, mitochondrial membrane potential and DNA fragmentation were determined on the day of collection (day 0) and day 3 (72 h) of storage at 15-17 °C...
February 10, 2017: Acta Veterinaria Scandinavica
https://www.readbyqxmd.com/read/28185602/impaired-hypothalamic-pituitary-testicular-axis-activity-spermatogenesis-and-sperm-function-promote-infertility-in-males-with-lead-poisoning
#7
Jason Gandhi, Rafael J Hernandez, Andrew Chen, Noel L Smith, Yefim R Sheynkin, Gargi Joshi, Sardar Ali Khan
Lead poisoning is a stealthy threat to human physiological systems as chronic exposure can remain asymptomatic for long periods of time before symptoms manifest. We presently review the biophysical mechanisms of lead poisoning that contribute to male infertility. Environmental and occupational exposure of lead may adversely affect the hypothalamic-pituitary-testicular axis, impairing the induction of spermatogenesis. Dysfunction at the reproductive axis, namely testosterone suppression, is most susceptible and irreversible during pubertal development...
February 10, 2017: Zygote: the Biology of Gametes and Early Embryos
https://www.readbyqxmd.com/read/28155163/two-tailed-comet-assay-2t-comet-simultaneous-detection-of-dna-single-and-double-strand-breaks
#8
Elva I Cortés-Gutiérrez, José Luis Fernández, Martha I Dávila-Rodríguez, Carmen López-Fernández, Jaime Gosálvez
A modification of the original comet assay was developed for the simultaneous evaluation of DNA single strand breaks (SSBs) and double strand breaks (DSBs) in human spermatozoa. The two-dimensional perpendicular tail comet assay (2T-comet) combines non-denaturing and denaturant conditions to the same sperm nucleoid. In this case, the species-specific deproteinized sperm is first subjected to an electrophoretic field under non-denaturing conditions to mobilize isolated free discrete DNA fragments produced from DSBs; this is then followed by a second electrophoresis running perpendicular to the first one but under alkaline conditions to produce DNA denaturation, exposing SSBs on the same linear DNA chain or DNA fragments flanked by DSBs...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28124476/oxidative-stress-status-and-sperm-dna-fragmentation-in-fertile-and-infertile-men
#9
M Dorostghoal, S R Kazeminejad, N Shahbazian, M Pourmehdi, A Jabbari
Evidence suggests that disturbing the balance between reactive oxygen species levels and antioxidant contents in seminal plasma leads to oxidative stress resulting in male infertility. This study was carried out to identifying clinical significance of seminal oxidative stress and sperm DNA fragmentation in treatment strategies of male infertility in southwest Iran. Sperm parameters, lipid peroxidation and activity of antioxidant enzymes were assessed in fertile (n = 105) and infertile (n = 112) men. Malondialdehyde (MDA) levels in seminal plasma were found to be higher significantly (p < ...
January 26, 2017: Andrologia
https://www.readbyqxmd.com/read/28100767/effects-of-season-on-bull-sperm-quality-in-thawed-samples-in-northern-spain
#10
M Sabés-Alsina, A Johannisson, N Lundeheim, M Lopez-Bejar, J M Morrell
The aim of the present study was to evaluate the possible effects of climate factors on sperm quality of Holstein dairy bulls housed in northern Spain. Semen samples from 11 Holstein dairy bulls were collected and cryopreserved in winter, spring and summer. Sperm quality parameters such as motility, morphology, plasma membrane integrity, acrosome status, mitochondrial membrane potential, DNA fragmentation index and reactive oxygen species were assessed. Samples collected in spring showed higher mean values of total and progressive motility compared with samples collected in winter...
January 18, 2017: Veterinary Record
https://www.readbyqxmd.com/read/28090458/efficient-isolation-of-sperm-with-high-dna-integrity-and-stable-chromatin-packaging-by-a-combination-of-density-gradient-centrifugation-and-magnetic-activated-cell-sorting
#11
Hee-Jun Chi, Su-Jin Kwak, Seok-Gi Kim, Youn-Young Kim, Ji-Young Park, Chang-Seok Yoo, Il-Hae Park, Hong-Gil Sun, Jae-Won Kim, Kyeong-Ho Lee
OBJECTIVE: This study was carried out to investigate the correlations of the sperm DNA fragmentation index (DFI) with semen parameters and apoptosis, and to investigate the effects of density-gradient centrifugation (DGC) and magnetic-activated cell sorting (MACS) on reducing the proportion of sperm with DNA fragmentation and protamine deficiency. METHODS: Semen analysis and a sperm DNA fragmentation assay were performed to assess the correlations between semen parameters and the DFI in 458 semen samples...
December 2016: Clinical and Experimental Reproductive Medicine
https://www.readbyqxmd.com/read/28078226/clinical-utility-of-sperm-dna-fragmentation-testing-practice-recommendations-based-on-clinical-scenarios
#12
REVIEW
Ashok Agarwal, Ahmad Majzoub, Sandro C Esteves, Edmund Ko, Ranjith Ramasamy, Armand Zini
Sperm DNA fragmentation (SDF) has been generally acknowledged as a valuable tool for male fertility evaluation. While its detrimental implications on sperm function were extensively investigated, little is known about the actual indications for performing SDF analysis. This review delivers practice based recommendations on commonly encountered scenarios in the clinic. An illustrative description of the different SDF measurement techniques is presented. SDF testing is recommended in patients with clinical varicocele and borderline to normal semen parameters as it can better select varicocelectomy candidates...
December 2016: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28076980/status-of-sperm-born-oocyte-activating-factors-pawp-plc%C3%AE-and-sperm-chromatin-in-uncapacitated-capacitated-and-acrosome-reacted-conditions
#13
Marziyeh Tavalaee, Kazem Parivar, Abdol-Hossein Shahverdi, Kamran Ghaedi, Mohammad Hossein Nasr-Esfahani
The aim of this study was to investigate the value of sperm factors PAWP and PLCζ involved in oocyte activation and sperm chromatin status, as indicators of sperm quality during uncapacitated, capacitated and acrosome-reacted conditions. Semen samples collected from 10 normozoospermic men and sperm factors PAWP, PLCζ, protamine deficiency and DNA fragmentation evaluated in fresh samples, processed sample by DGC (density gradient centrifugation), capacitated and acrosome reacted sperm, using immunofluorescence and flow cytometry...
January 12, 2017: Human Fertility: Journal of the British Fertility Society
https://www.readbyqxmd.com/read/28063527/sperm-dna-fragmentation-in-miscarriage-a-promising-diagnostic-or-a-test-too-far
#14
EDITORIAL
Jackson C Kirkman-Brown, Christopher De Jonge
No abstract text is available yet for this article.
January 2017: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28058714/a-phytotherapic-approach-to-reduce-sperm-dna-fragmentation-in-patients-with-male-infertility
#15
Marco Capece, Giuseppe Romeo, Antonio Ruffo, Leo Romis, Salvatore Mordente, Giovanni Di Lauro
INTRODUCTION: Infertility affects 50 to 80 million (between 8 and 12% of couples). Male factor is a cause of infertility in almost half of the cases, mainly due to oligoasthenoteratozoospermia. DNA fragmentation is now considered an important factor in the aetiology of male infertility. We studied the effects on semen analysis and on DNA fragmentation of in vivo admnistration of Myo-Inositol and Tribulus Terrestris plus Alga Ecklonia plus Biovis (Tradafertil; Tradapharma Sagl, Swizerland) in men with previously diagnosed male infertility...
December 28, 2016: Urologia
https://www.readbyqxmd.com/read/28043360/effects-of-an-extension-of-the-equilibration-period-up-to-96%C3%A2-hours-on-the-characteristics-of-cryopreserved-bull-semen
#16
A Fleisch, E Malama, U Witschi, C Leiding, M Siuda, F Janett, H Bollwein
This study was designed to investigate the effects of an equilibration period up to 96 hours and three extenders (AndroMed, OPTIXcell, and Triladyl) on the quality of cryopreserved bull semen and to evaluate, whether an extension of the equilibration time to 72 hours does affect fertility in the field. One ejaculate of 17 bulls was collected and divided into three equal aliquots and diluted, respectively, with the three extenders. Each aliquot was again divided into five parts and equilibrated for 4, 24, 48, 72, and 96 hours before freezing in an automatic freezer...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28043354/effect-of-sex-sorting-and-cryopreservation-on-the-post-thaw-sperm-quality-of-iberian-red-deer-spermatozoa
#17
L Anel-López, O García-Álvarez, I Parrilla, D Del Olmo, A Maroto-Morales, M R Fernandez-Santos, J A Ortiz, A J Soler, E M Martínez, J M Vazquez, J J Garde
This study investigated the effect of sex-sorting and cryopreservation on post-thaw characteristics and fertility of red deer (Cervus elaphus) sperm for the first time. Semen was collected by electroejaculation from 10 mature stags during the breeding season, and each ejaculate split into four experimental groups: Bulk sorted spermatozoa, sorted but not sexed (BSS); sorted high purity X-spermatozoa (XSS); sorted high purity Y-spermatozoa (YSS); and, control non-sorted spermatozoa (NS). Following, all samples were frozen over liquid nitrogen...
February 2017: Theriogenology
https://www.readbyqxmd.com/read/28042543/relationship-between-potential-sperm-factors-involved-in-oocyte-activation-and-sperm-dna-fragmentation-with-intra-cytoplasmic-sperm-injection-clinical-outcomes
#18
Marziyeh Tavalaee, Abbas Kiani-Esfahani, Mohammad Hossein Nasr-Esfahani
OBJECTIVE: The present study aimed to simultaneously evaluate the association between expression of three potential factors [post-acrosomal sheath WW domain-binding protein (PAWP), phospholipase Cζ (PLCζ), and truncated form of the kit receptor (TR-KIT)] as candidates of oocyte activation with fertilization rate and early embryonic development. MATERIALS AND METHODS: In this experimental study, semen samples were collected from 35 intra-cytoplasmic sperm injection (ICSI) candidates and analyzed according to World Health Organization criteria (2010)...
2017: Cell Journal
https://www.readbyqxmd.com/read/28017538/sedimentation-properties-in-density-gradients-correspond-with-levels-of-sperm-dna-fragmentation-chromatin-compaction-and-binding-affinity-to-hyaluronic-acid
#19
Forough Torabi, Adel Binduraihem, David Miller
Mature spermatozoa bind hyaluronic acid in the extracellular matrix via hyaladherins. Immature spermatozoa may be unable to interact because they do not express the appropriate hyaladherins on their surface. Fresh human semen samples were fractionated using differential density gradient centrifugation (DDGC) and the ability of these fractions to bind hyaluronic acid was evaluated. The presence of sperm hyaladherins was also assessed. CD44 was located mainly on the hyaluronic and equatorial segment and became more restricted to the equatorial segment in capacitated spermatozoa...
December 15, 2016: Reproductive Biomedicine Online
https://www.readbyqxmd.com/read/28012250/the-effect-of-ureaplasma-urealyticum-on-the-level-of-p34h-expression-the-activity-of-hyaluronidase-and-dna-fragmentation-in-human-spermatozoa
#20
Xiao-Ping Ma, Xiao-Qin Gao
BACKGROUND: To study the effect of Ureaplasma urealyticum on the level of P34H expression, the activity of hyaluronidase, and the DNA fragmentation in human spermatozoa. METHOD: Western blot was used to detect the level of P34H expression on spermatozoa.The localization of this protein on human spermatozoa was determined by indirect immunofluorescent and observed by laser scanning confocal microscope. The activity of hyaluronidase was examined by improved fixed-substrate film method...
January 2017: American Journal of Reproductive Immunology: AJRI
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