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sperm fragmentation dna

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https://www.readbyqxmd.com/read/29149676/high-salt-diet-decreases-reproductive-performance-in-rams-and-down-regulates-gene-expression-of-some-components-of-the-renin-angiotensin-system-in-the-testis
#1
Yi Fang, Rongzhen Zhong, Xuezhao Sun, Daowei Zhou
Although salt-tolerant plants can be used to combat dryland salinity, these plants contain high concentrations of salt (NaCl), which may have deleterious effects if fed to livestock. Twenty-four Merino rams (9 mo of age) with similar body weight were equally allocated to two groups and fed a normal- or high-salt diet (0.5 and 12% NaCl, respectively) for 3 mo. Rams fed the high-salt diet had lower live weight gains, higher water intake, smaller testes (466 ± 48.4 vs 604 ± 51.1 g) and reductions (P <0...
November 10, 2017: Theriogenology
https://www.readbyqxmd.com/read/29148981/walnut-leaf-extract-acts-as-a-fertility-agent-in-male-wistar-albino-rats-a-search-for-herbal-male-fertility-enhancer
#2
Seun F Akomolafe, Ganiyu Oboh
Background Walnut leaf is one of the many medicinal plants used in folklore as male fertility enhancers. The present work was therefore undertaken with an aim to scientifically validate this claim. As such, we evaluated the effect of the aqueous extract from walnut leaves on biomolecules related to fertility in adult male rats and its mode of action as fertility-enhancing agent. Methods Twenty-five rats were randomly divided into five groups of five animals each; Group 1 served as control and received normal (0...
November 17, 2017: Journal of Complementary & Integrative Medicine
https://www.readbyqxmd.com/read/29145645/waddlia-chondrophila-a-chlamydia-related-bacterium-has-a-negative-impact-on-human-spermatozoa
#3
D Baud, N Vulliemoz, A Ammerdorffer, J Gyger, G Greub, V Castella, M Stojanov
STUDY QUESTION: What is the impact of Waddlia chondrophila, an emerging Chlamydia-related bacterium associated with miscarriage, on human spermatozoa? SUMMARY ANSWER: W. chondrophila had a negative impact on human spermatozoa (decrease in viability and mitochondrial membrane potential) and was not entirely removed from infected samples by density gradient centrifugation. WHAT IS KNOWN ALREADY: Bacterial infection or colonization might have a deleterious effect on male fertility...
November 14, 2017: Human Reproduction
https://www.readbyqxmd.com/read/29143943/the-impact-of-ejaculatory-abstinence-on-semen-analysis-parameters-a-systematic-review
#4
REVIEW
Brent M Hanson, Kenneth I Aston, Tim G Jenkins, Douglas T Carrell, James M Hotaling
OBJECTIVE: The aim of this study was to evaluate recent publications and determine the impact of ejaculatory abstinence on semen analysis parameters as well as fertility outcomes. METHODS: This was a systematic review of 28 recent publications. The focus of this study was the impact of abstinence on semen parameters and fertility outcomes in papers published since the year 2000. The specific parameters evaluated were volume, sperm count, motility, morphology, pH, DNA fragmentation rate, viability, and pregnancy or fertilization rates following assisted reproduction...
November 16, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/29143242/comparing-reactive-oxygen-species-and-dna-fragmentation-in-semen-samples-of-unexplained-infertile-and-healthy-fertile-men
#5
Zahra Zandieh, Akram Vatannejad, Mahmood Doosti, Sara Zabihzadeh, Mahnaz Haddadi, Leila Bajelan, Batool Rashidi, Saeid Amanpour
BACKGROUND: Male factor infertility has increased to more than 40% during the last decade. About 30% of these couples are diagnosed with unexplained infertility. In fact, reactive oxygen species (ROS), especially superoxide anion (O2(-)·) and hydrogen peroxide (H2O2), play a crucial role in regulation of physiological and pathological processes in spermatozoa. Moreover, since the diagnosis of unexplained infertility just through semen analysis is a matter of much controversy; we aimed to evaluate the levels of ROS and sperm DNA fragmentation in the semen samples of unexplained infertile and fertile control couples...
November 15, 2017: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29135156/-isolated-teratozoospermia-is-there-a-role-for-antioxidant-therapy
#6
E A Efremov, E V Kasatonova, Ya I Melnik, A A Nikushina
Recently, literature has emerged that offers contradictory findings of idiopathic forms of isolated teratozoospermia that may confuse clinicians. Some researchers argue that at 0-1% of normal forms of spermatozoa, morphology itself cannot be a prognostic indicator of fertility, either in the planning of natural pregnancy, or when used in assisted reproduction. In this connection, the possible causes of teratozoospermia and alternative therapies are being actively sought, in addition to known invasive and costly procedures...
October 2017: Urologii︠a︡
https://www.readbyqxmd.com/read/29128698/seminal-plasma-antioxidants-are-directly-involved-in-boar-sperm-cryotolerance
#7
Junwei Li, Isabel Barranco, Asta Tvarijonaviciute, Manuel F Molina, Emilio A Martinez, Heriberto Rodriguez-Martinez, Inmaculada Parrilla, Jordi Roca
Boar ejaculates are ejected in fractions with a specific composition in terms of sperm numbers and seminal plasma (SP), which is reflected in the varying sperm cryotolerance observed among different fractions. As boar sperm are particularly sensitive to oxidative stress, this study evaluated the role of SP antioxidants in the observed differences in sperm cryotolerance among ejaculate fractions. Ten ejaculates from five boars were manually collected in fractions: the first 10 mL of the sperm-rich fraction (SRF), the rest of the SRF and the post-SRF...
October 31, 2017: Theriogenology
https://www.readbyqxmd.com/read/29124782/the-effect-of-cigarette-smoking-on-human-seminal-parameters-sperm-chromatin-structure-and-condensation
#8
R M Mostafa, Y S Nasrallah, M M Hassan, A F Farrag, A Majzoub, A Agarwal
Considerable debate still exists regarding the effects of cigarette smoking on male fertility. This work aimed to explore effects of cigarette smoking on semen parameters and DNA fragmentation on 95 infertile patients who were divided into infertile male nonsmokers (45) and infertile male smokers (50). Smokers were subdivided according to a number of cigarettes smoked per day into mild (≤10), moderate (11-20) and heavy smokers (≥21). Semen analysis, sperm chromatin condensation integrity with aniline blue staining and sperm viability were compared between the study groups...
November 9, 2017: Andrologia
https://www.readbyqxmd.com/read/29123667/paternal-obesity-how-bad-is-it-for-sperm-quality-and-progeny-health
#9
Georges Raad, Mira Hazzouri, Silvia Bottini, Michele Trabucchi, Joseph Azoury, Valérie Grandjean
There is substantial evidence that paternal obesity is associated not only with an increased incidence of infertility, but also with an increased risk of metabolic disturbance in adult offspring. Apparently, several mechanisms may contribute to the sperm quality alterations associated with paternal obesity, such as physiological/hormonal alterations, oxidative stress, and epigenetic alterations. Along these lines, modifications of hormonal profiles namely reduced androgen levels and elevated estrogen levels, were found associated with lower sperm concentration and seminal volume...
2017: Basic and Clinical Andrology
https://www.readbyqxmd.com/read/29122403/validation-of-simple-and-cost-effective-stains-to-assess-acrosomal-status-dna-damage-and-mitochondrial-activity-in-rooster-spermatozoa
#10
Bruno R Rui, Daniel S R Angrimani, João Diego A Losano, Luana de Cássia Bicudo, Marcílio Nichi, Ricardo J G Pereira
Several methods have been developed to evaluate spermatozoa function in birds but many of these are sometimes complicated, costly and not applicable to field studies (i.e., performed within poultry breeding facilities). The objective was, therefore, to validate efficient, practical and inexpensive procedures to determine DNA fragmentation, acrosomal integrity, and mitochondrial activity in poultry spermatozoa. Initially, ejaculates were individually diluted and divided into control (4°C, 4h) and UV-irradiated aliquots (room temperature, 4h), and then samples containing different percentages of DNA-damaged spermatozoa (0%, 25%, 50%, 75% and 100%) were subjected to Toluidine Blue (TB) and Sperm Chromatin Dispersion assessments (SCD)...
December 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29121172/freezing-induced-uptake-of-disaccharides-for-preservation-of-chromatin-in-freeze-dried-stallion-sperm-during-accelerated-aging
#11
Harriëtte Oldenhof, Miao Zhang, Katharina Narten, Judith Bigalk, Bulat Sydykov, Willem F Wolkers, Harald Sieme
Non-viable freeze-dried sperm have intact chromatin and can be used for fertilization via intracytoplasmic sperm injection. Freeze-dried sperm preferably should be stored at 4°C or lower, because DNA damage accumulates during storage at room temperature. Disaccharides are known to protect biomolecules both during freezing and drying, by forming a highly viscous glassy state. Their use for intracellular protection is challenging because cellular membranes are normally impermeable for disaccharides. In the current study, we demonstrate that membrane impermeable compounds, including lucifer yellow and trehalose, are taken up by stallion sperm when exposed to freezing...
November 7, 2017: Biology of Reproduction
https://www.readbyqxmd.com/read/29117433/inter-and-intra-laboratory-standardization-of-tunel-assay-for-assessment-of-sperm-dna-fragmentation
#12
Sajal Gupta, Rakesh Sharma, Ashok Agarwal
The functional aspects of sperm activity such as sperm chromatin integrity and ability to fertilize cannot be characterized by routine semen parameters. Men with unexplained infertility and idiopathic infertility, as well as men with normozoospermic semen profiles, show high DNA fragmentation. Molecular anomalies in the sperm can be detected by a sperm DNA fragmentation (SDF) assay which can be used in adjunct to conventional semen analysis. While the sperm chromatin structure assay (SCSA) remains the "gold standard," the TUNEL assay using flow cytometry is becoming popular among the different tests that are currently available to measure sperm DNA fragmentation...
November 8, 2017: Current Protocols in Toxicology
https://www.readbyqxmd.com/read/29116706/effect-of-sperm-dna-fragmentation-on-embryo-development-clinical-and-biological-aspects
#13
Cristian Alvarez Sedó, Melina Bilinski, Daniela Lorenzi, Heydy Uriondo, Felicitas Noblía, Valeria Longobucco, Estefanía Ventimiglia Lagar, Florencia Nodar
OBJECTIVE: The aim of this study was to investigate the effect of sperm DNA fragmentation on fertilization rate, embryo development (blastulation rate), and pregnancy outcomes for ICSI cycles performed in a cohort of couples using donor eggs and to assess the remaining embryos that were not transferred or frozen for apoptotic markers. METHODS: Eighty-two women (egg recipients) were included in the study (2016) were included in the study. The recipients' mean age was 41...
November 8, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/29113834/aflatoxin-b1-impairs-sperm-quality-and-fertilization-competence
#14
A Komsky-Elbaz, M Saktsier, Z Roth
Aflatoxins are poisonous byproducts of the soilborne fungus Aspergillus, involved in the decomposition of plant materials. Aflatoxins can be found in various food products, such as maize, sorghum, millet, rice and wheat. AFB1 is the most toxic of these, classified as a carcinogen and mutagen for both humans and animals. AFB1 has been detected in human cord blood and placenta; however, its toxic effect on sperm is less known. The current study examines sperm responses associated with AFB1 exposure. These included acrosome integrity and function, mitochondrial polarity, DNA fragmentation, fertilization competence and early embryonic development...
November 4, 2017: Toxicology
https://www.readbyqxmd.com/read/29110319/effects-of-chlamydia-trachomatis-infection-on-sperm-chromatin-condensation-and-dna-integrity
#15
L Dehghan Marvast, A R Talebi, J Ghasemzadeh, A Hosseini, A A Pacey
The present study was performed to investigate the relation of Chlamydia trachomatis infection to sperm chromatin/DNA integrity in a population of infertile men (male partner of infertile couples) from Iran. Blood, semen and first-void urine samples were obtained from 250 infertile men. Data were analysed with regard to the results of (i) serological analysis for specific antibodies to C. trachomatis in serum; (ii) the presence of C. trachomatis and DNA in first-void urine; and (iii) in the semen sample of the male partner, in addition to sperm analysis, four different tests (aniline blue, chromomycin A3, acridine orange and TUNEL) were used to detect sperm chromatin and DNA abnormalities...
November 6, 2017: Andrologia
https://www.readbyqxmd.com/read/29107386/impact-of-holding-and-equilibration-time-on-post-thaw-quality-of-shipped-boar-semen
#16
J Schäfer, D Waberski, M Jung, M Schulze
Cryopreservation of boar semen is of growing interest for breeding companies. Overnight-shipping of pre-diluted ejaculates to specialized laboratories offers a practicable method, but requires fine-tuned protocols. In this study, the impact of holding post shipping at 17°C for 2 or 24h (n=10 samples) and of equilibration in lactose-egg yolk extender without glycerol at 5°C for 2, 4, 24 or 48h (n=11 samples) before freezing was investigated. Sperm-rich fractions of ejaculates from 21 mature Pietrain boars were collected at a single boar stud...
October 27, 2017: Animal Reproduction Science
https://www.readbyqxmd.com/read/29103113/testicular-toxicity-and-sperm-quality-following-copper-exposure-in-wistar-albino-rats-ameliorative-potentials-of-l-carnitine
#17
Maurya Khushboo, Meesala Krishna Murthy, Maibam Sunita Devi, Sanasam Sanjeev, Kalibulla Syed Ibrahim, Nachimuthu Senthil Kumar, Vikas Kumar Roy, Guruswami Gurusubramanian
Copper is a persistent toxic and bio-accumulative heavy metal of global concern. Continuous exposure of copper compounds of different origin is the most common form of copper poisoning and in turn adversely altering testis morphology and function and affecting sperm quality. L-carnitine has a vital role in the spermatogenesis, physiology of sperm, sperm production and quality. This study was designed to examine whether the detrimental effects of long-term copper consumption on sperm quality and testis function of Wistar albino rat could be prevented by L-carnitine therapy...
November 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29082983/more-good-than-harm-should-be-expected-when-testi-icsi-is-applied-to-oligozoospermic-men-with-post-testicular-sperm-dna-fragmentation
#18
EDITORIAL
Sandro C Esteves, Ahmad Majzoub, Ashok Agarwal
No abstract text is available yet for this article.
September 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/29082982/live-birth-must-be-the-primary-reproductive-endpoint-in-ivf-icsi-studies-evaluating-sperm-dna-fragmentation-testing
#19
EDITORIAL
Sandro C Esteves, Ashok Agarwal, Ahmad Majzoub
No abstract text is available yet for this article.
September 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/29082980/the-correct-interpretation-of-sperm-dna-fragmentation-test
#20
EDITORIAL
Chak-Lam Cho, Ashok Agarwal, Ahmad Majzoub, Sandro C Esteves
No abstract text is available yet for this article.
September 2017: Translational Andrology and Urology
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