Oxidative stress status and sperm DNA fragmentation in fertile and infertile men

Andrologia ◽  
2017 ◽  
Vol 49 (10) ◽  
pp. e12762 ◽  
Author(s):  
M. Dorostghoal ◽  
S. R. Kazeminejad ◽  
N. Shahbazian ◽  
M. Pourmehdi ◽  
A. Jabbari
Keyword(s):  
Oxidative Stress ◽  
Dna Fragmentation ◽  
Sperm Dna Fragmentation ◽  
Infertile Men ◽  
Sperm Dna ◽  
Oxidative Stress Status

The relationship between genitourinary microorganisms and oxidative stress, sperm DNA fragmentation and semen parameters in infertile men

Andrologia ◽  
2021 ◽  
Author(s):  
Carmen Lok Tung Ho ◽  
Daniella R. Vaughan‐Constable ◽  
Jonathan Ramsay ◽  
Channa Jayasena ◽  
Tharu Tharakan ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dna Fragmentation ◽  
Semen Parameters ◽  
Sperm Dna Fragmentation ◽  
Infertile Men ◽  
Sperm Dna ◽  
The Relationship ◽  
And Oxidative Stress

Increased Sperm DNA Fragmentation in Infertile Men with Varicocele: Relationship with Apoptosis, Seminal Oxidative Stress, and Spermatic Parameters

2020 ◽  
Author(s):  
Oumaima Ammar ◽  
Oumayma Tekeya ◽  
Ibtissem Hannachi ◽  
Amira Sallem ◽  
Zohra Haouas ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dna Fragmentation ◽  
Sperm Dna Fragmentation ◽  
Infertile Men ◽  
Sperm Dna

scholarly journals The effect of rhFSH on Sperm DNA Fragmentation and sperm parameters in Oligozoospermia Infertile Men

2020 ◽  
Vol 8 (2) ◽  
pp. 55-62
Author(s):  
Atefeh Verdi ◽  
◽  
Seyedeh Saeideh Sahraei ◽  
Elham Asa ◽  
Rahil Jannatifar ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dna Fragmentation ◽  
Follicle Stimulating Hormone ◽  
Sperm Parameters ◽  
Sperm Dna Fragmentation ◽  
Infertile Men ◽  
Sperm Dna ◽  
Before And After ◽  
Infertile Patients ◽  
Stimulating Hormone

Background: One of the main causes of male infertility is the negative effects of oxidative stress. Follicle-stimulating hormone (FSH) plays an essential role in spermatogenesis, as well as in the maintenance of sperm DNA integrity. This study aimed to determine whether the recombinant human follicle-stimulating hormone (rhFSH) treatment of sperm parameters could positively affect sperm DNA and oxidative DNA fragmentation in oligozoospermia infertile men. Materials and Methods: This interventional study was carried out on a sample of 50 oligozoospermia infertile men. To this end, sperm DNA fragmentation and ROS as an oxidative stress marker were measured before and after treatment with the rhFSH sperm parameters. Results: The sperm parameters (concentration, mobility, and morphology) were significantly different in the oligozoospermia infertile patients before and after the rhFSH treatment (p<0.05). Moreover, sperm DNA fragmentation had a significant decrease in the patients after the FSH treatment (p<0.05). In addition, the ROS level in sperm, and the malondialdehyde level of seminal plasma significantly decreased after the treatment (P<0.05). Conclusion: The findings indicated that the rhFSH treatment significantly improved the sperm parameters. Further, the treatment led to a meaningful reduction of sperm DNA fragmentation and oxidative stress in the oligozoospermia infertile patients. Similarly, the malondialdehyde concentration markedly decreased in correlation with DNA fragmentation after the rhFSH treatment.

scholarly journals Oxidation of Sperm DNA and Male Infertility

Antioxidants ◽  
2021 ◽  
Vol 10 (1) ◽  
pp. 97
Author(s):  
Leila Rashki Ghaleno ◽  
AliReza Alizadeh ◽  
Joël R. Drevet ◽  
Abdolhossein Shahverdi ◽  
Mojtaba Rezazadeh Valojerdi
Keyword(s):  
Oxidative Stress ◽  
Male Infertility ◽  
Oxidative Damage ◽  
Dna Fragmentation ◽  
Dna Bases ◽  
De Novo Mutation ◽  
Easy Access ◽  
Sperm Dna Fragmentation ◽  
Dna Base ◽  
Sperm Dna

One important reason for male infertility is oxidative stress and its destructive effects on sperm structures and functions. The particular composition of the sperm membrane, rich in polyunsaturated fatty acids, and the easy access of sperm DNA to oxidative damage due to sperm cell specific cytologic and metabolic features (no cytoplasm left and cells unable to mount stress responses) make it the cell type in metazoans most susceptible to oxidative damage. In particular, oxidative damage to the spermatozoa genome is an important issue and a cause of male infertility, usually associated with single- or double-strand paternal DNA breaks. Various methods of detecting sperm DNA fragmentation have become important diagnostic tools in the prognosis of male infertility and such assays are available in research laboratories and andrology clinics. However, to date, there is not a clear consensus in the community as to their respective prognostic value. Nevertheless, it is important to understand that the effects of oxidative stress on the sperm genome go well beyond DNA fragmentation alone. Oxidation of paternal DNA bases, particularly guanine and adenosine residues, the most sensitive residues to oxidative alteration, is the starting point for DNA damage in spermatozoa but is also a danger for the integrity of the embryo genetic material independently of sperm DNA fragmentation. Due to the lack of a spermatozoa DNA repair system and, if the egg is unable to correct the sperm oxidized bases, the risk of de novo mutation transmission to the embryo exists. These will be carried on to every cell of the future individual and its progeny. Thus, in addition to affecting the viability of the pregnancy itself, oxidation of the DNA bases in sperm could be associated with the development of conditions in young and future adults. Despite these important issues, sperm DNA base oxidation has not attracted much interest among clinicians due to the lack of simple, reliable, rapid and consensual methods of assessing this type of damage to the paternal genome. In addition to these technical issues, another reason explaining why the measurement of sperm DNA oxidation is not included in male fertility is likely to be due to the lack of strong evidence for its role in pregnancy outcome. It is, however, becoming clear that the assessment of DNA base oxidation could improve the efficiency of assisted reproductive technologies and provide important information on embryonic developmental failures and pathologies encountered in the offspring. The objective of this work is to review relevant research that has been carried out in the field of sperm DNA base oxidation and its associated genetic and epigenetic consequences.

Sperm DNA fragmentation in infertile men with genitourinary infection by Chlamydia trachomatis and Mycoplasma

2008 ◽  
Vol 90 (2) ◽  
pp. 328-334 ◽  
Author(s):  
Guadalupe Gallegos ◽  
Benito Ramos ◽  
Rebeca Santiso ◽  
Vicente Goyanes ◽  
Jaime Gosálvez ◽  
...  
Keyword(s):  
Chlamydia Trachomatis ◽  
Dna Fragmentation ◽  
Sperm Dna Fragmentation ◽  
Infertile Men ◽  
Sperm Dna ◽  
Genitourinary Infection

What is the role of varicocelectomy in infertile men with clinical varicoceles and elevated sperm DNA fragmentation?

2021 ◽  
Vol 116 (3) ◽  
pp. 657-658
Author(s):  
Shirley L. Wang ◽  
Bronwyn S. Bedrick ◽  
Taylor P. Kohn
Keyword(s):  
Dna Fragmentation ◽  
Sperm Dna Fragmentation ◽  
Infertile Men ◽  
Sperm Dna

P–004 Effect of varicocelectomy on sperm DNA fragmentation rates in infertile men with clinical varicocele: a systematic review and meta-analysis

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
F Tenori. Lir. Neto ◽  
M Roque ◽  
S Esteves
Keyword(s):  
Systematic Review ◽  
Surgical Technique ◽  
Dna Fragmentation ◽  
Subgroup Analysis ◽  
Meta Analysis ◽  
Sperm Dna Fragmentation ◽  
Inclusion Criteria ◽  
Infertile Men ◽  
Sperm Dna ◽  
The Impact

Abstract Study question Does varicocelectomy improve sperm DNA quality in men with infertility and clinically detected varicoceles? Summary answer Varicocelectomy reduces sperm DNA fragmentation (SDF) rates in infertile men with clinical varicocele. What is known already Varicocele has been linked to male infertility through various non-mutually exclusive mechanisms, including an increase in reactive oxygen species (ROS) production that may lead to sperm DNA damage. Damage to sperm DNA may result in longer time-to-pregnancy, unexplained infertility, recurrent pregnancy loss, and failed intrauterine insemination or in vitro fertilization/intracytoplasmic sperm injection. Therefore, interventions aimed at decreasing SDF rates, including varicocele repair, have been explored to improve fertility and pregnancy outcomes potentially, either by natural conception or using medically assisted reproduction. Study design, size, duration Systematic review and meta-analysis Participants/materials, setting, methods We followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Our systematic search included PubMed/Medline, EMBASE, Scielo, and Google Scholar to identify all relevant studies written in English and published from inception until October 2020. Inclusion criteria were studies comparing SDF rates before and after varicocelectomy in infertile men with clinical varicocele. Articles were included if the following SDF assays were utilized: SCSA, TUNEL, SCD test, or alkaline Comet. Main results and the role of chance Thirteen studies fulfilled the inclusion criteria and were selected for the analysis. The estimated weighted mean difference of SDF rates after varicocelectomy was –6.58% (13 studies, 95% CI –8.33%, –4.84%; I2=90% p &lt; 0.0001). Subgroup analysis revealed a significant decrease in SDF rates using SCSA (eight studies, WMD –6.80%, 95% CI –9.31%, –4.28%; I2=89%, p &lt; 0.0001), and TUNEL (three studies, WMD –4.86%, 95% CI –7.38%, –2.34%; I2=89%, p &lt; 0.0001). The test for subgroup difference revealed that pooled results were conservative using the above SDF assays. Comet and SCD tests were used in only one study each; thus, a meta-analysis was not applicable. The studies were further categorized by the surgical technique (microsurgical versus non-microsurgical). This subgroup analysis showed a significant decrease in SDF rates using microsurgical technique (10 studies, WMD –6.70%, 95% CI –9.04%, –4.37%; I2=91%, p &lt; 0.0001). After varicocelectomy, SDF rates were also decreased when non-microsurgical approaches were used, albeit the effect was not statistically significant (2 studies, WMD –6.84%, 95% CI –10.05%, 1.38%; I2=86%) (Figure 3). The heterogeneity was not materially affected by performing analyses by the above subgroups, suggesting that the SDF assay and surgical technique do not explain the inconsistency in the treatment effect across primary studies. Limitations, reasons for caution There were no randomized controlled trials comparing varicocelectomy to placebo for alleviating SDF levels. Heterogeneity was high, which may be explained by the low number of included studies. Pregnancy data are not available in most studies, thus the impact of reduced SDF after varicocelectomy on pregnancy rates unclear. Wider implications of the findings: Our study indicates a positive association between varicocelectomy and reduced postoperative SDF rates in men with clinical varicocele and infertility, independentetly of the assays used to measure SDF. These findings may help counsel and manage infertile men with varicocele and high SDF levels. Trial registration number Not applicable

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