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Mousavi SM, Towhidi A, Zhandi M, Mohammadi-Sangcheshmeh A, Amou-Abediny G, Moradi M, Kastelic JP. A soy lecithin nanoparticles-based extender effectively cryopreserves Holstein bull sperm. Anim Reprod Sci 2023; 257:107326. [PMID: 37677889 DOI: 10.1016/j.anireprosci.2023.107326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/02/2023] [Accepted: 08/31/2023] [Indexed: 09/09/2023]
Abstract
Plant-based semen extenders, typically derived from soybean lecithin, are easier to modulate more and consistent in their composition than animal-based extenders. As large lecithin particles can, however, reduce effectiveness and solubility in bull semen extenders, sonication was used to create nano-lecithin (NL) particles of soybean lecithin. The objective was to determine the effects of lecithin type and concentration on the quality of frozen-thawed bovine sperm. We hypothesized that reducing the size of lecithin improves its interactions with the sperm and enhances the parameters that favor its motility, viability and fertility. Semen was collected from six mature Holstein bulls and ejaculates meeting minimum standards were pooled. Eight Tris-based extenders that contained 1, 2, 3, or 4 % of either conventional lecithin (L1-L4) or NL (NL1-NL4), plus two control extenders (one animal-based extender containing 20 % egg yolk [EY] and a commercial lecithin-based extender [BioXcell®]) were compared. Among soybean lecithin-based extenders, NL3 had the highest total and progressive sperm motility, and average path, straight-line and curvilinear sperm velocity, and was comparable to EY. Additionally, sperm mitochondrial activity was the highest in NL3, whereas sperm viability was highest in EY, NL3, and L4. Following in vitro fertilization of in vitro-matured bovine oocyes, NL3 had cleavage and hatching rates comparable to BioXcell®, but a lower blastocyst rate than EY. Overall, NL3 performed better than the other extenders for most end points, with efficiency comparable to EY. We, therefore, concluded that reducing lecithin particle size to a nano level improves sperm cryopreservation with optimal performance with 3 % NL.
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Affiliation(s)
- Seyyed Mojtaba Mousavi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - Armin Towhidi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran.
| | - Mahdi Zhandi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | | | - Ghassem Amou-Abediny
- Faculty of Chemical Engineering, College of Engineering, University of Tehran, Iran
| | - Mehdi Moradi
- Department of Animal Science, College of Agriculture and Natural Resources, University of Tehran, Karaj, Iran
| | - John P Kastelic
- Faculty of Veterinary Medicine, University of Calgary, Calgary, Alberta, Canada
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2
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Aitken RJ, Bromfield EG, Gibb Z. OXIDATIVE STRESS AND REPRODUCTIVE FUNCTION: The impact of oxidative stress on reproduction: a focus on gametogenesis and fertilization. Reproduction 2022; 164:F79-F94. [PMID: 35929832 DOI: 10.1530/rep-22-0126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Accepted: 08/05/2022] [Indexed: 11/08/2022]
Abstract
In brief Many aspects of the reproductive process are impacted by oxidative stress. This article summarizes the chemical nature of reactive oxygen species and their role in both the physiological regulation of reproductive processes and the pathophysiology of infertility. Abstract This article lays out the fundamental principles of oxidative stress. It describes the nature of reactive oxygen species (ROS), the way in which these potentially toxic metabolites interact with cells and how they impact both cellular function and genetic integrity. The mechanisms by which ROS generation is enhanced to the point that the cells' antioxidant defence mechanisms are overwhelmed are also reviewed taking examples from both the male and female reproductive system, with a focus on gametogenesis and fertilization. The important role of external factors in exacerbating oxidative stress and impairing reproductive competence is also examined in terms of their ability to disrupt the physiological redox regulation of reproductive processes. Developing diagnostic and therapeutic strategies to cope with oxidative stress within the reproductive system will depend on the development of a deeper understanding of the nature, source, magnitude, and location of such stress in order to fashion personalized treatments that meet a given patient's clinical needs.
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Affiliation(s)
- R John Aitken
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, School of Environmental and Life Sciences, College of Engineering Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Elizabeth G Bromfield
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, School of Environmental and Life Sciences, College of Engineering Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
| | - Zamira Gibb
- Priority Research Centre for Reproductive Science, Discipline of Biological Sciences, School of Environmental and Life Sciences, College of Engineering Science and Environment, University of Newcastle, Callaghan, New South Wales, Australia.,Hunter Medical Research Institute, New Lambton Heights, New South Wales, Australia
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3
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Oxidative Stress Markers and Sperm DNA Fragmentation in Men Recovered from COVID-19. Int J Mol Sci 2022; 23:ijms231710060. [PMID: 36077455 PMCID: PMC9456229 DOI: 10.3390/ijms231710060] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 11/16/2022] Open
Abstract
SARS-CoV-2 negatively affects semen characteristics, impairs various biochemical processes in seminal fluid and within spermatogenic cells ultimately leading to male fertility decline. However, the distinct mechanisms, in particular, the role of oxidative stress on the consequences of coronavirus infection, have not been well investigated, which is the purpose of the present study. The standard semen parameters, its pro- and antioxidant system state, as well as the level of sperm DNA fragmentation, were assessed in 17 semen samples of men five months after the coronavirus infection and in 22 age-matched control patients. We determined that the DNA fragmentation rate negatively correlated with the period after coronavirus recovery, as well as seminal fluid superoxide dismutase activity and uric acid level. It was demonstrated that COVID-19 is not always associated with increased DNA fragmentation, allowing them to be considered as two independent factors. Thus, the most significant changes were noted in the samples of men after COVID-19 and abnormal TUNEL results: increased round cell number, decreased seminal fluid's nitrotyrosine level, and total antioxidant capacity and Zn, as well as an increased 8-hydroxy-2'-deoxyguanosine level within spermatozoa. The data obtained indicate that increased DNA fragmentation and diminished semen quality in men can be the result of an imbalance in semen pro- and antioxidant components after COVID-19.
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4
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Upadhyay VR, Ramesh V, Dewry RK, Yadav DK, Ponraj P. Bimodal interplay of reactive oxygen and nitrogen species in physiology and pathophysiology of bovine sperm function. Theriogenology 2022; 187:82-94. [DOI: 10.1016/j.theriogenology.2022.04.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 04/22/2022] [Accepted: 04/23/2022] [Indexed: 11/17/2022]
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5
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Sperm function and oxidative status: Effect on fertility in Bos taurus and Bos indicus bulls when semen is used for fixed-time artificial insemination. Anim Reprod Sci 2022; 237:106922. [DOI: 10.1016/j.anireprosci.2022.106922] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 01/07/2022] [Accepted: 01/16/2022] [Indexed: 01/17/2023]
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6
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Redox Regulation and Oxidative Stress in Mammalian Oocytes and Embryos Developed In Vivo and In Vitro. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph182111374. [PMID: 34769890 PMCID: PMC8583213 DOI: 10.3390/ijerph182111374] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/25/2021] [Accepted: 10/25/2021] [Indexed: 12/18/2022]
Abstract
Oocytes and preimplantation embryos require careful regulation of the redox environment for optimal development both in vivo and in vitro. Reactive oxygen species (ROS) are generated throughout development as a result of cellular metabolism and enzyme reactions. ROS production can result in (i) oxidative eustress, where ROS are helpful signalling molecules with beneficial physiological functions and where the redox state of the cell is maintained within homeostatic range by a closely coupled system of antioxidants and antioxidant enzymes, or (ii) oxidative distress, where excess ROS are deleterious and impair normal cellular function. in vitro culture of embryos exacerbates ROS production due to a range of issues including culture-medium composition and laboratory culture conditions. This increase in ROS can be detrimental not only to assisted reproductive success rates but can also result in epigenetic and genetic changes in the embryo, resulting in transgenerational effects. This review examines the effects of oxidative stress in the oocyte and preimplantation embryo in both the in vivo and in vitro environment, identifies mechanisms responsible for oxidative stress in the oocyte/embryo in culture and approaches to reduce these problems, and briefly examines the potential impacts on future generations.
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7
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Effects of Taurine on Sperm Quality during Room Temperature Storage in Hu Sheep. Animals (Basel) 2021; 11:ani11092725. [PMID: 34573691 PMCID: PMC8470579 DOI: 10.3390/ani11092725] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/02/2021] [Accepted: 09/03/2021] [Indexed: 01/26/2023] Open
Abstract
Simple Summary Hu sheep sperm is highly susceptible to ROS during storage at room temperature. It is very important to use an antioxidant to ameliorate oxidative damage. Tau is an important amino acid peptide antioxidant with a wide range of biological effects. It can effectively scavenge free radicals, regulate reproductive function, improve immunity, and enhance its antioxidant capacity. However, the effects of Tau in the preservation of Hu sheep semen at room temperature are unclear. Therefore, Tau was added to Hu sheep semen preserved at room temperature to explore its effect on semen. The results showed that adding an appropriate concentration of Tau had a positive effect on Hu sheep semen preserved at room temperature; in particular, 20 mM Tau performed best. Abstract The present study aimed to investigate whether the presence of Tau protected Hu sheep sperm from ROS stress during storage at room temperature. The semen was diluted with extender (Tris-based) at room temperature, supplemented with different concentrations of Tau (0, 10, 20, 40, 80, or 100 mM), and stored at 15 °C. Sperm quality parameters (sperm progressive motility, kinetic parameters, plasma membrane integrity rate, acrosome integrity rate, and MMP) and antioxidant parameters (ROS, MDA, SOD, CAT, and T-AOC) were evaluated during the preservation of semen. The addition of Tau, especially at a concentration of 20 mM, exerted positive effects on sperm quality parameters and antioxidant parameters compared to the sperm without Tau treatment (control group). The addition of Tau, especially at a concentration of 100 mM, exerted negative effects on sperm quality parameters and antioxidant parameters compared to the control group. Interestingly, the results indicated that the sperm acrosome integrity rate did not change during storage time. In conclusion, the addition of Tau to sperm preserved at room temperature can enhance the antioxidant ability of sperm, reduce the LPO on the 5th day, and improve the quality of semen preserved at room temperature. These results implied that Tau had potential to enhance Hu sheep sperm reproductive performance.
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Badr M, Rawash Z, Azab A, Dohreg R, Ghattas T, Fathi M. Spirulina platensis extract addition to semen extender enhances cryotolerance and fertilizing potentials of buffalo bull spermatozoa. Anim Reprod 2021; 18:e20200520. [PMID: 34373731 PMCID: PMC8340677 DOI: 10.1590/1984-3143-ar2020-0520] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 07/05/2021] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to investigate the effect of Spirulina platensis extract (SPE) addition to the freezing extender on freezability, lipid peroxidation, ultrastructure alterations and fertilizing potentials of frozen-thawed buffalo bull spermatozoa. Semen samples were collected with artificial vagina from five adult fertile bulls and diluted with Tris-base extender containing SPE (1, 5, 10 and 20 μg/mL) or without SPE (control). Diluted semen was cooled to 4 °C throughout one hour and frozen in 0.25 mL straws: prior to being stored in liquid nitrogen. Cryopresreved spermatozoa were assessed for post-thawing sperm motility, viability, acrosomal integrity, ultrastructure changes, antioxidant activities, lipid peroxidation and fertility rate. The current results clearly indicated that adding 10μg/mL SPE to the freezing extender significantly improved (P< 0.05) post-thawing motility and decrease the percentage of acrosomal damage (51.67±6.02% and 16.33±1.46%, respectively) compared with the control (28.33±4.41% and 26.33±1.77%, respectively). Moreover, addition of 10 μg/mL SPE to the semen extender significantly diminished (P< 0.05) MDA concentration (10.66±2.40 nmol/109) compared with the control (22.66±4.26 nmol/109). Therefore, the present results revealed that addition of 10μgl/mL SPE to the freezing extender might improve semen quality and reduce cryodamage of the buffalo bull spermatozoa.
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Affiliation(s)
- Magdy Badr
- Artificial Insemination and Embryo Transfer Department, Animal Reproduction Research Institute, Giza, Egypt
| | - Zaher Rawash
- Artificial Insemination and Embryo Transfer Department, Animal Reproduction Research Institute, Giza, Egypt
| | - Ahmed Azab
- Pathology Department, Animal Reproduction Research Institute, Giza, Egypt
| | - Ragab Dohreg
- Artificial Insemination and Embryo Transfer Department, Animal Reproduction Research Institute, Giza, Egypt
| | - Taha Ghattas
- Biology of Reproduction Department, Animal Reproduction Research Institute, Giza, Egypt
| | - Mohamed Fathi
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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Sperm Oxidative Stress during In Vitro Manipulation and Its Effects on Sperm Function and Embryo Development. Antioxidants (Basel) 2021; 10:antiox10071025. [PMID: 34202126 PMCID: PMC8300781 DOI: 10.3390/antiox10071025] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/21/2021] [Accepted: 06/23/2021] [Indexed: 12/25/2022] Open
Abstract
Reactive oxygen species (ROS) generated at low levels during mitochondrial respiration have key roles in several signaling pathways. Oxidative stress (OS) arises when the generation of ROS exceeds the cell's antioxidant scavenging ability and leads to cell damage. Physiological ROS production in spermatozoa regulates essential functional characteristics such as motility, capacitation, acrosome reaction, hyperactivation, and sperm-oocyte fusion. OS can have detrimental effects on sperm function through lipid peroxidation, protein damage, and DNA strand breakage, which can eventually affect the fertility of an individual. Substantial evidence in the literature indicates that spermatozoa experiencing OS during in vitro manipulation procedures in human- and animal-assisted reproduction are increasingly associated with iatrogenic ROS production and eventual impairment of sperm function. Although a direct association between sperm OS and human assisted reproductive techniques (ART) outcomes after in vitro fertilization (IVF) and/or intracytoplasmic sperm injection (ICSI) is still a matter of debate, studies in animal models provide enough evidence on the adverse effects of sperm OS in vitro and defective fertilization and embryo development. This review summarized the literature on sperm OS in vitro, its effects on functional ability and embryo development, and the approaches that have been proposed to reduce iatrogenic sperm damage and altered embryonic development.
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10
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Pathophysiology of Mitochondrial Dysfunction in Human Spermatozoa: Focus on Energetic Metabolism, Oxidative Stress and Apoptosis. Antioxidants (Basel) 2021; 10:antiox10050695. [PMID: 33924936 PMCID: PMC8145012 DOI: 10.3390/antiox10050695] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/04/2021] [Accepted: 04/24/2021] [Indexed: 02/07/2023] Open
Abstract
The dogma of mitochondria as the major source of energy in supporting sperm motility should be critically reconsidered in the light of several experimental data pointing to a major role of glycolysis in mammalian spermatozoa. In this light, the reported positive correlation between the mitochondrial membrane potential (ΔΨm) and motility of ejaculated spermatozoa cannot be explained convincingly by an impaired mitochondrial ATP generation only. Evidence has been produced suggesting that, in human sperm, dysfunctional mitochondria represent the main site of generation of reactive oxygen species (ROS). Furthermore, in these organelles, a complex bidirectional relationship could exist between ROS generation and apoptosis-like events that synergize with oxidative stress in impairing sperm biological integrity and functions. Despite the activity of enzymatic and non-enzymatic antioxidant factors, human spermatozoa are particularly vulnerable to oxidative stress, which plays a major role in male factor infertility. The purpose of this article is to provide an overview of metabolic, oxidative and apoptosis-like inter-linkages of mitochondrial dysfunction and their reflections on human sperm biology.
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11
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Tanga BM, Qamar AY, Raza S, Bang S, Fang X, Yoon K, Cho J. Semen evaluation: methodological advancements in sperm quality-specific fertility assessment - A review. Anim Biosci 2021; 34:1253-1270. [PMID: 33902175 PMCID: PMC8255896 DOI: 10.5713/ab.21.0072] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Accepted: 03/30/2021] [Indexed: 11/27/2022] Open
Abstract
Assessment of male fertility is based on the evaluation of sperm. Semen evaluation measures various sperm quality parameters as fertility indicators. However, semen evaluation has limitations, and it requires the advancement and application of strict quality control methods to interpret the results. This article reviews the recent advances in evaluating various sperm-specific quality characteristics and methodologies, with the help of different assays to assess sperm-fertility status. Sperm evaluation methods that include conventional microscopic methods, computer-assisted sperm analyzers (CASA), and flow cytometric analysis, provide precise information related to sperm morphology and function. Moreover, profiling fertility-related biomarkers in sperm or seminal plasma can be helpful in predicting fertility. Identification of different sperm proteins and diagnosis of DNA damage has positively contributed to the existing pool of knowledge about sperm physiology and molecular anomalies associated with different infertility issues in males. Advances in methods and sperm-specific evaluation has subsequently resulted in a better understanding of sperm biology that has improved the diagnosis and clinical management of male factor infertility. Accurate sperm evaluation is of paramount importance in the application of artificial insemination and assisted reproductive technology. However, no single test can precisely determine fertility; the selection of an appropriate test or a set of tests and parameters is required to accurately determine the fertility of specific animal species. Therefore, a need to further calibrate the CASA and advance the gene expression tests is recommended for faster and field-level applications.
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Affiliation(s)
- Bereket Molla Tanga
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea.,Faculty of Veterinary Medicine, Hawassa University, 05, Hawassa, Ethiopia
| | - Ahmad Yar Qamar
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea.,Department of Clinical Sciences, College of Veterinary and Animal Sciences, Jhang 35200, Sub-campus University of Veterinary and Animal Sciences, Lahore 54000, Pakistan
| | - Sanan Raza
- Department of Clinical Sciences, College of Veterinary and Animal Sciences, Jhang 35200, Sub-campus University of Veterinary and Animal Sciences, Lahore 54000, Pakistan.,Department of Clinical Sciences, College of Veterinary and Animal Sciences, Jhang 35200, Sub-campus University of Veterinary and Animal Sciences, Lahore 54000, PakistanDepartment of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Aydin Adnan Menderes University, Aydin 09016, Turkey
| | - Seonggyu Bang
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Xun Fang
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
| | - Kiyoung Yoon
- Department of Companion Animal, Shingu College, Seongnam 13174, Korea
| | - Jongki Cho
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Korea
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12
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Schäfer-Somi S, Binder C, Burak J, Papadopoulos N, Ilas J, Boersma A, Aurich C. Using egg yolk in a TRIS-Equex STM paste extender for freezing of dog semen is superior to egg yolk plasma, also after addition of lecithin and catalase. Cryobiology 2021; 100:63-71. [PMID: 33826944 DOI: 10.1016/j.cryobiol.2021.03.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 03/25/2021] [Accepted: 03/30/2021] [Indexed: 11/28/2022]
Abstract
We compared the results of using egg yolk plasma (EYP) instead of egg yolk (EY) in a TRIS-based Equex STM Paste freezing extender system for dog semen [25]. We also tested whether the addition of lecithin and catalase to the EYP extenders would improve results. Fractionated semen collection was done in 17 stud dogs and the sperm rich fraction diluted with different extenders in 2 steps: (I) TRIS-fructose-citric acid extender (TRIS) containing 20% egg yolk (EY) and 3% glycerol [25], (II) TRIS containing 20% egg yolk plasma (EYP) and 3% glycerol, and (III) TRIS containing 20% EYP and 0.8% lecithin (EYP-L) and 3% glycerol. After equilibration the second dilution step was done: samples with (I) were diluted with TRIS-EY with 7% glycerol and 1% Equex STM paste [25]; samples with (II) and (III) were divided in 2 aliquots each, and one part diluted with TRIS-EYP or TRIS-EYP-L, both containing 7% glycerol and 1% Equex STM paste, and the other one part with the same extenders containing additionally 300 I.U./mL catalase. After freezing and thawing, samples were analyzed by CASA and sperm chromatin structure assay (SCSA); reactive oxygen species (ROS), degree of apoptosis and zona binding ability were determined. Semen samples with TRIS-EY with a final concentration of 5% glycerol and 0.5% Equex STM paste [25] showed best post thaw progressive motility (P), most intact cells, lowest percentage of ROS, acrosome damages, dead and apoptotic cells. Curvilinear velocity (VCL), DNA fragmentation, morphological abnormalities and zona binding ability did not differ between groups. Replacement of egg yolk by EYP increased the ROS and late apoptotic cells. Addition of lecithin and catalase to EYP containing extenders decreased motility and increased complete apoptosis. We conclude that egg yolk is superior to EYP in the here investigated extenders. The TRIS-based extender [25] with EYP could not be improved by addition of lecithin and catalase; however, in-vivo fertilization capacity of the here examined extenders remains to be investigated.
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Affiliation(s)
- Sabine Schäfer-Somi
- Department of Small Animals and Horses, Platform for AI and ET, University of Veterinary Medicine Vienna, Veterinärplatz 1, Vienna, Austria.
| | - C Binder
- Clinic for Obstetrics, Gynecology and Andrology, University of Veterinary Medicine Vienna, Veterinärplatz 1, Vienna, Austria.
| | - J Burak
- Platform for AI and ET, University of Veterinary Medicine Vienna, Veterinärplatz 1, Vienna, Austria.
| | - N Papadopoulos
- Platform for AI and ET, University of Veterinary Medicine Vienna, Veterinärplatz 1, Vienna, Austria.
| | - J Ilas
- Takeda Pharma Austria, Vienna, Austria.
| | - A Boersma
- Institute of In-vivo and In-vitro Models, University of Veterinary Medicine Vienna, Veterinärplatz 1, Vienna, Austria.
| | - C Aurich
- Platform for AI and ET, University of Veterinary Medicine Vienna, Veterinärplatz 1, Vienna, Austria.
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13
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Oxidative and nitrosative stress in frozen-thawed pig spermatozoa. I: Protective effect of melatonin and butylhydroxytoluene on sperm function. Res Vet Sci 2021; 136:143-150. [PMID: 33626440 DOI: 10.1016/j.rvsc.2021.02.006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2020] [Revised: 01/18/2021] [Accepted: 02/04/2021] [Indexed: 02/06/2023]
Abstract
The addition of antioxidants to the cryopreservation medium has been shown to exert a positive effect on the quality of frozen-thawed sperm in different species. The objective of the present study was to evaluate the effects of supplementing the freezing medium with butylhydroxytoluene (BHT) and melatonin (MEL) in frozen-thawed pig spermatozoa. With this purpose, six ejaculates coming from six separate boars were cryopreserved in traditional freezing medium (i.e. lactose/egg-yolk/glycerol; Control) supplemented with 1.0 mM BHT (BHT-1), 2.0 mM BHT (BHT-2), 0.01 μM MEL (MEL-1) and 1.0 μM MEL (MEL-2). We evaluated sperm viability, membrane lipid disorder, acrosome integrity, mitochondrial membrane potential, lipid peroxidation, oxidation of thiol groups, and levels of total reactive oxygen species (ROS), peroxynitrite and superoxide anion (·O2-). We also analysed total (TM) and progressive sperm motilities (PM), and kinetic parameters at post-thaw (T0, T30 and T60). The BHT-2 and MEL-2 groups presented higher viability and acrosome integrity, and lower levels of peroxynitrite, ·O2- and lipid peroxidation than the control (P < 0.05), whereas MEL-2 diminished the levels of total ROS (P < 0.05). TM and PM were not affected by the treatment, while, LIN and STR shows differences between experimental groups. In conclusion, the addition of BHT and MEL to cryopreservation medium diminishes oxidative and nitrosative stress markers, which has repercussions for the integrity of plasma and acrosomal membranes of frozen-thawed spermatozoa.
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14
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Pezo F, Yeste M, Zambrano F, Uribe P, Risopatrón J, Sánchez R. Antioxidants and their effect on the oxidative/nitrosative stress of frozen-thawed boar sperm. Cryobiology 2020; 98:5-11. [PMID: 33248047 DOI: 10.1016/j.cryobiol.2020.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 11/10/2020] [Accepted: 11/22/2020] [Indexed: 02/07/2023]
Abstract
In swine, the use of frozen-thawed boar sperm for artificial insemination remains a suboptimal reproductive technology. Among the negative effects of cryopreservation on sperm cells, it is worth highlighting that cryopreservation causes irreversible alterations in motility and components of the sperm membrane as a result of dramatic changes in temperature (cooling/freezing curve) and osmolality. In addition, freeze-thawing may induce oxidative stress and increase the generation of reactive oxygen species (ROS) and nitrogen reactive species (RNS). While boar sperm cryopreservation has been reported to increase lipid peroxidation and the intracellular levels of hydrogen peroxide, less research on its impact on RNS has been conducted. Furthermore, previous studies have investigated the effects of supplementing cryopreservation media with antioxidants to counteract the deleterious effects of ROS and RNS. Antioxidants of synthetic origin or natural extracts have been used, with some showing noticeable and positive effects on functional sperm parameters both in vitro and in vivo. The aim of this review is to provide an update on the effect of different molecules with antioxidant capacity on the function of cryopreserved boar sperm.
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Affiliation(s)
- Felipe Pezo
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Escuela de Medicina Veterinaria, Facultad de Recursos Naturales y Medicina Veterinaria, Universidad Santo Tomas, Chile
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Unit of Cell Biology, Department of Biology, Institute of Food and Agricultural Technology, Faculty of Sciences, University of Girona, Girona, Spain
| | - Fabiola Zambrano
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Pamela Uribe
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Internal Medicine, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Jennie Risopatrón
- Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile
| | - Raúl Sánchez
- Laboratory of Reproductive Medicine and Molecular Endocrinology, Center for Translational Medicine (CEMT-BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Preclinical Sciences, Faculty of Medicine, Universidad de La Frontera, Temuco, Chile.
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15
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Leemans B, Stout TAE, De Schauwer C, Heras S, Nelis H, Hoogewijs M, Van Soom A, Gadella BM. Update on mammalian sperm capacitation: how much does the horse differ from other species? Reproduction 2020; 157:R181-R197. [PMID: 30721132 DOI: 10.1530/rep-18-0541] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/04/2019] [Indexed: 12/21/2022]
Abstract
In contrast to various other mammalian species, conventional in vitro fertilization (IVF) with horse gametes is not reliably successful. In particular, stallion spermatozoa fails to penetrate the zona pellucida, most likely due to incomplete activation of stallion spermatozoa (capacitation) under in vitro conditions. In other mammalian species, specific capacitation triggers have been described; unfortunately, none of these is able to induce full capacitation in stallion spermatozoa. Nevertheless, knowledge of capacitation pathways and their molecular triggers might improve our understanding of capacitation-related events observed in stallion sperm. When sperm cells are exposed to appropriate capacitation triggers, several molecular and biochemical changes should be induced in the sperm plasma membrane and cytoplasm. At the level of the sperm plasma membrane, (1) an increase in membrane fluidity, (2) cholesterol depletion and (3) lipid raft aggregation should occur consecutively; the cytoplasmic changes consist of protein tyrosine phosphorylation and elevated pH, cAMP and Ca2+ concentrations. These capacitation-related events enable the switch from progressive to hyperactivated motility of the sperm cells, and the induction of the acrosome reaction. These final capacitation triggers are indispensable for sperm cells to migrate through the viscous oviductal environment, penetrate the cumulus cells and zona pellucida and, finally, fuse with the oolemma. This review will focus on molecular aspects of sperm capacitation and known triggers in various mammalian species. Similarities and differences with the horse will be highlighted to improve our understanding of equine sperm capacitation/fertilizing events.
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Affiliation(s)
- Bart Leemans
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Tom A E Stout
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Catharina De Schauwer
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Sonia Heras
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Hilde Nelis
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Maarten Hoogewijs
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Ann Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Ghent, Belgium
| | - Bart M Gadella
- Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands.,Department of Biochemistry and Cell Biology, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
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16
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Ahmadi E, Tahmasebian-Ghahfarokhi N, Nafar-Sefiddashti M, Sadeghi-Sefiddashti M, Hassanpour H. Impacts of in vitro thermal stress on ovine epididymal spermatozoa and the protective effect of β-mercaptoethanol as an antioxidant. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2020; 11:43-51. [PMID: 32537106 PMCID: PMC7282219 DOI: 10.30466/vrf.2018.83527.2096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 07/24/2018] [Indexed: 11/01/2022]
Abstract
Most aspects of reproductive function including spermatogenesis, oocyte growth and maturation, early embryonic development, fetal and placental growth, and lactation can be affected by thermal stress. Furthermore, it has been shown that oxidative stress involves in the pathology of thermal stress. Therefore, the aim of this study was to investigate the impacts of thermal stress on the ovine mature epididymal spermatozoa extracted from testes of slaughtered rams in the presence or absence of an antioxidant. Epididymal spermatozoa were incubated at scrotal (32.00 ˚C), normal body (39.00 ˚C), and hyperthermic temperatures (41.00 ˚C) for 4 hr in the presence or absence of 1 mmol L-1 β-mercaptoethanol. The results demonstrated the high sensitivity of ram epididymal spermatozoa to the hyperthermic temperature at in vitro conditions. In comparison with scrotal temperature, quality parameters of spermatozoa were negatively affected by increase in temperature, as such in the spermatozoa incubated at hyperthermic temperature significant decrease was observed in the viability, DNA integrity and in the majority of motility parameters. Moreover, concentration of lipid peroxidation by-products, thiobarbituric acid reactive substances, were significantly increased. The findings showed that using antioxidant during incubation period had significant protective effect on the viability and motility of incubated spermatozoa not only at the hyperthermic temperature, but also at the scrotal and normal body temperatures. In conclusion the ovine epididymal spermatozoa were sensitive to in vitro thermal stress and it seems that this sensitivity was partly related to the oxidative stress.
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Affiliation(s)
- Ebrahim Ahmadi
- Department of Cloning and Transgenic Animals, Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Narges Tahmasebian-Ghahfarokhi
- Department of Cloning and Transgenic Animals, Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Maryam Nafar-Sefiddashti
- Department of Cloning and Transgenic Animals, Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Marzieh Sadeghi-Sefiddashti
- Department of Cloning and Transgenic Animals, Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran
| | - Hossein Hassanpour
- Department of Cloning and Transgenic Animals, Research Institute of Animal Embryo Technology, Shahrekord University, Shahrekord, Iran.,Department of Basic Sciences, Faculty of Veterinary Medicine, Shahrekord University, Shahrekord, Iran
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17
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Aitken RJ, Drevet JR. The Importance of Oxidative Stress in Determining the Functionality of Mammalian Spermatozoa: A Two-Edged Sword. Antioxidants (Basel) 2020; 9:antiox9020111. [PMID: 32012712 PMCID: PMC7070991 DOI: 10.3390/antiox9020111] [Citation(s) in RCA: 116] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 01/20/2020] [Accepted: 01/21/2020] [Indexed: 12/31/2022] Open
Abstract
This article addresses the importance of oxidative processes in both the generation of functional gametes and the aetiology of defective sperm function. Functionally, sperm capacitation is recognized as a redox-regulated process, wherein a low level of reactive oxygen species (ROS) generation is intimately involved in driving such events as the stimulation of tyrosine phosphorylation, the facilitation of cholesterol efflux and the promotion of cAMP generation. However, the continuous generation of ROS ultimately creates problems for spermatozoa because their unique physical architecture and unusual biochemical composition means that they are vulnerable to oxidative stress. As a consequence, they are heavily dependent on the antioxidant protection afforded by the fluids in the male and female reproductive tracts and, during the precarious process of insemination, seminal plasma. If this antioxidant protection should be compromised for any reason, then the spermatozoa experience pathological oxidative damage. In addition, situations may prevail that cause the spermatozoa to become exposed to high levels of ROS emanating either from other cells in the immediate vicinity (particularly neutrophils) or from the spermatozoa themselves. The environmental and lifestyle factors that promote ROS generation by the spermatozoa are reviewed in this article, as are the techniques that might be used in a diagnostic context to identify patients whose reproductive capacity is under oxidative threat. Understanding the strengths and weaknesses of ROS-monitoring methodologies is critical if we are to effectively identify those patients for whom treatment with antioxidants might be considered a rational management strategy.
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Affiliation(s)
- Robert J. Aitken
- Priority Research Centre for Reproductive Sciences, Faculty of Science and Faculty of Health and Medicine, The University of Newcastle, Callaghan, NSW 2308, Australia
- Hunter Medical Research Institute, New Lambton Heights, NSW, 2305, Australia
- Correspondence:
| | - Joel R. Drevet
- GReD Institute, INSERM U1103—CNRS UMR6293—Université Clermont Auvergne, Faculty of Medicine, CRBC building, 28 place Henri Dunant, 63001 Clermont-Ferrand, France;
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18
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From Past to Present: The Link Between Reactive Oxygen Species in Sperm and Male Infertility. Antioxidants (Basel) 2019; 8:antiox8120616. [PMID: 31817049 PMCID: PMC6943565 DOI: 10.3390/antiox8120616] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/22/2019] [Accepted: 11/26/2019] [Indexed: 01/13/2023] Open
Abstract
Reactive oxygen species (ROS) can be generated in mammalian cells via both enzymatic and non-enzymatic mechanisms. In sperm cells, while ROS may function as signalling molecules for some physiological pathways, the oxidative stress arising from the ubiquitous production of these compounds has been implicated in the pathogenesis of male infertility. In vitro studies have undoubtedly shown that spermatozoa are indeed susceptible to free radicals. However, many reports correlating ROS with sperm function impairment are based on an oxidative stress scenario created in vitro, lacking a more concrete observation of the real capacity of sperm in the production of ROS. Furthermore, sample contamination by leukocytes and the drawbacks of many dyes and techniques used to measure ROS also greatly impact the reliability of most studies in this field. Therefore, in addition to a careful scrutiny of the data already available, many aspects of the relationship between ROS and sperm physiopathology are still in need of further controlled and solid experiments before any definitive conclusions are drawn.
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19
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Aparnak P, Saberivand A. Effects of curcumin on canine semen parameters and expression of NOX5 gene in cryopreserved spermatozoa. VETERINARY RESEARCH FORUM : AN INTERNATIONAL QUARTERLY JOURNAL 2019; 10:221-226. [PMID: 31737231 PMCID: PMC6828172 DOI: 10.30466/vrf.2019.76137.2015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 02/21/2018] [Indexed: 12/26/2022]
Abstract
Canine seminal plasma contains antioxidant enzymes to protect sperm against internally generated ROS. These enzymes are removed from seminal plasma during the process of cryopreservation. The freezing/thawing process can cause some morphological and functional changes via ice crystallization and osmolality imbalance. The present study was conducted to evaluate the effects of curcumin supplementation on sperm total count, motility, progressive motility, viability, morphology, total antioxidant capacity (TAC), DNA integrity and NOX5 gene expression of dog frozen semen. The pooled semen was allocated to fresh (Group 1) and frozen (Group 2) controls, curcumin (2.50 mM) (Group 3) and curcumin (5.00 mM), (Group 4). Sperm parameters including total sperm count, morphology, motility, progressive motility, sperm concentration and DNA integrity in addition to TAC were evaluated in fresh and frozen-thawed semen samples. Real-time RT-PCR was used to investigate NOX5 and GADPH (reference gene) genes expressions. Curcumin at 2.50 mM provided a greater protective effect on the DNA integrity compared to 5.00 mM and control groups. TAC was significantly higher in 2.50 mM group than other groups. NOX5 gene expression in curcumin 2.50 mM was higher than 5.00 mM group. In conclusion, curcumin seems to emolliate sperm parameters and to protect sperm against sperm reactive oxygen stress and increases NOX5 gene expression.
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Affiliation(s)
- Parisa Aparnak
- PhD Candidate, Department of Clinical Sciences, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran
| | - Adel Saberivand
- Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
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20
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Water- and Fat-Soluble Antioxidants in Human Seminal Plasma and Serum of Fertile Males. Antioxidants (Basel) 2019; 8:antiox8040096. [PMID: 30978904 PMCID: PMC6523754 DOI: 10.3390/antiox8040096] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 04/01/2019] [Accepted: 04/09/2019] [Indexed: 02/06/2023] Open
Abstract
Reactive oxygen species (ROS) are physiologically involved in functions like sperm maturation, capacitation and acrosome reaction, but their excess is involved in male infertility. Antioxidants in seminal plasma (SP) are an important factor balancing physiologic and harmful ROS activities. In this study, we determined and compared the full profiles of the water- and fat-soluble antioxidants in SP and serum of 15 healthy fertile subjects (ranging between the ages of 35 and 42 years). Ejaculates were obtained after 2⁻5 days of sexual abstinence. After liquefaction and withdrawal of an aliquot for the sperm count, samples were centrifuged to obtain SP. Thirty min after semen donation, a venous blood sample was collected from each subject. Donors with lower SP concentrations of ascorbic acid (n = 5) or α-tocopherol (n = 5) received a 4 week oral administration of either vitamin C (100 mg/day) or vitamin E (30 mg/day). They were then re-assayed to determine the SP and serum levels of ascorbic acid and α-tocopherol. SP and serum samples were properly processed and analyzed by HPLC methods suitable to determine water (ascorbic acid, glutathione (GSH) and uric acid) and fat-soluble (all-trans-retinoic acid, all-trans-retinol, α-tocopherol, carotenoids and coenzyme Q10) antioxidants. Data demonstrate that only ascorbic acid is higher in SP than in serum (SP/serum ratio = 4.97 ± 0.88). The other water-soluble antioxidants are equally distributed in the two fluids (GSH SP/serum ratio = 1.14 ± 0.34; uric acid SP/serum ratio = 0.82 ± 0.12). All fat-soluble antioxidants are about 10 times less concentrated in SP than in serum. In donors treated with vitamin C or vitamin E, ascorbic acid and α-tocopherol significantly increased in both fluids. However, the SP/serum ratio of ascorbic acid was 4.15 ± 0.45 before and 3.27 ± 0.39 after treatment, whilst those of α-tocopherol were 0.11 ± 0.03 before and 0.10 ± 0.02 after treatment. The results of this study, by showing the peculiar composition in water- and fat-soluble antioxidants SP, indicate that it is likely that still-unknown mechanisms allow ascorbic acid accumulation in SP against a concentration gradient. SP mainly relies its defenses on water- rather than fat-soluble antioxidants and on the mechanisms ensuring their transfer from serum.
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21
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Mizera A, Kuczaj M, Szul A. Impact of the Spirulina maxima extract addition to semen extender on bovine sperm quality. ITALIAN JOURNAL OF ANIMAL SCIENCE 2019. [DOI: 10.1080/1828051x.2018.1548914] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Alicja Mizera
- Institute of Animal Breeding, Wroclaw University of Environmental and Life Science, Wroclaw, Poland
| | - Marian Kuczaj
- Institute of Animal Breeding, Wroclaw University of Environmental and Life Science, Wroclaw, Poland
| | - Anna Szul
- Malopolska Biotechnic Centre Ltd, Krasne, Poland
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22
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Okano DS, Penitente-Filho JM, Gomez León VE, Maitan PP, Silveira CO, Waddington B, Díaz-Miranda EA, da Costa EP, Guimarães SEF, Guimarães JD. In vitro evaluation of cryopreserved bovine sperm and its relation to field fertility in fixed-time artificial insemination. Reprod Domest Anim 2019; 54:604-612. [PMID: 30614080 DOI: 10.1111/rda.13401] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Accepted: 01/02/2019] [Indexed: 11/29/2022]
Abstract
This study aimed to assess characteristics of bovine cryopreserved sperm and evaluate its relation to field fertility in fixed-time artificial insemination (FTAI). Semen samples of 16 bulls were used to inseminate 811 Nellore cows, and four of these bulls were also used to inseminate 101 Nellore heifers. Samples of the same ejaculate used for FTAI from each bull were analysed in the laboratory after thawing. Sperm motility and vigour were subjectively assessed by light microscope, and integrity of the plasma and acrosome membranes, and H2 O2 production were evaluated by flow cytometer. Relation among sperm characteristics and pregnancy rate of cows and heifers were evaluated by univariate and multivariate logistic regression. Subjective sperm motility and vigour did not affect the probability of pregnancy in cows or heifers. In univariate analysis for pregnancy in cows, sperm traits related to acrosome injury positively affected probability of pregnancy mainly when associated with plasma membrane integrity; H2 O2 production seems to be less important than plasma membrane integrity in affecting probability of pregnancy. In multivariate analysis, sperm traits related to injured acrosome positively affected probability of cow and heifer pregnancies while intact acrosome was negatively related to cow pregnancy. Intact plasma membrane and high H2 O2 production were positively related to cow pregnancy but negatively related to heifer pregnancy. Results suggest that a capacitation-like status of the acrosome may benefit probability of pregnancy in cows.
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Affiliation(s)
- Denise S Okano
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | | | - Paula P Maitan
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Camila O Silveira
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, Brazil
| | - Bruna Waddington
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - Eduardo P da Costa
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, Brazil
| | | | - José D Guimarães
- Department of Veterinary, Universidade Federal de Viçosa, Viçosa, Brazil
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23
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Laleethambika N, Anila V, Manojkumar C, Muruganandam I, Giridharan B, Ravimanickam T, Balachandar V. Diabetes and Sperm DNA Damage: Efficacy of Antioxidants. ACTA ACUST UNITED AC 2018. [DOI: 10.1007/s42399-018-0012-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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24
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Spermatic mitochondria: role in oxidative homeostasis, sperm function and possible tools for their assessment. ZYGOTE 2018; 26:251-260. [PMID: 30223916 DOI: 10.1017/s0967199418000242] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
SummaryDespite sperm mitochondrial relevance to the fertilization capacity, the processes involved in the production of ATP and functional dynamics of sperm mitochondria are not fully understood. One of these processes is the paradox involved between function and formation of reactive oxygen species performed by the organelle. Therefore, this review aimed to provide data on the role of sperm mitochondria in oxidative homeostasis and functionality as well the tools to assess sperm mitochondrial function.
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25
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Lazzarino G, Listorti I, Muzii L, Amorini AM, Longo S, Di Stasio E, Caruso G, D’Urso S, Puglia I, Pisani G, Lazzarino G, Tavazzi B, Bilotta P. Low-molecular weight compounds in human seminal plasma as potential biomarkers of male infertility. Hum Reprod 2018; 33:1817-1828. [DOI: 10.1093/humrep/dey279] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 08/22/2018] [Indexed: 12/13/2022] Open
Affiliation(s)
- Giacomo Lazzarino
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, and Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, Rome, Italy
| | - Ilaria Listorti
- Alma Res Fertility Centre, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, Rome, Italy
| | - Luigi Muzii
- Alma Res Fertility Centre, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, Rome, Italy
| | - Angela Maria Amorini
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, and Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, Rome, Italy
| | - Salvatore Longo
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, and Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, Rome, Italy
- LTA-Biotech srl, Viale Don Orione, 3D, Paternò, Catania, Italy
| | - Enrico Di Stasio
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, and Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, Rome, Italy
| | - Giuseppe Caruso
- Oasi Research Institute—IRCCS, Via Conte Ruggero, 73, Troina, Enna, Italy
| | - Serafina D’Urso
- Department of Biomedical and Biotechnological Sciences, Division of Medical Biochemistry, University of Catania, Viale A. Doria 6, Catania, Italy
| | - Ilaria Puglia
- Faculty of Biosciences and Agro-Food and Environmental Technologies, University of Teramo, Via R. Balzarini 1, Teramo, Italy
| | - Giuseppe Pisani
- Department of Obstetrics and Gynecology, Azienda Ospedaliera S. Camillo-Forlanini, Cir.ne Gianicolense 87, Rome, Italy
| | - Giuseppe Lazzarino
- Department of Biomedical and Biotechnological Sciences, Division of Medical Biochemistry, University of Catania, Viale A. Doria 6, Catania, Italy
- LTA-Biotech srl, Viale Don Orione, 3D, Paternò, Catania, Italy
| | - Barbara Tavazzi
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, and Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, Rome, Italy
| | - Pasquale Bilotta
- Alma Res Fertility Centre, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, Rome, Italy
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26
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Eskandari-Shahraki M, Prud'homme B, Manjunath P. CRISPR-Cas9-mediated mutation revealed BSPH2 protein is dispensable for male fertility. Mol Reprod Dev 2018; 85:709-719. [PMID: 29969530 DOI: 10.1002/mrd.23039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2018] [Accepted: 06/26/2018] [Indexed: 12/11/2022]
Abstract
Members of the Binder of SPerm (BSP) superfamily have been identified in both human and mouse epididymis. These proteins are known to bind sperm membrane and promote sperm capacitation. Studies suggest that BSPH2 might play a different role in sperm functions from its counterparts; however, the role of BSPH2 remains mainly unexplored. To investigate whether the absence of one member of the BSP family could affect fertility, mice lacking Bsph2 expression were generated using clustered regularly interspaced short palindromic repeats (CRISPR) associated 9 (Cas9) technology. Knockout (KO) male mice were mated with wild-type (WT) females, and the number and weight of the pups were determined. Sperm motility in WT and KO was assessed using sperm class analyzer (SCA). Liquid chromatography tandem mass spectrometry (LC-MS/MS) was used for protein identification. Fertility analysis of null Bsph2 mice did not reveal any phenotype. No differences were noticed on average litter size or average pup weight. Normal testis weight and morphology were observed in Bsph2+/- and Bsph2-/- compared to the WT. Quantitative polymerase chain reaction analyses revealed that Bsph1 messenger RNA expression was increased in mutant mice, whereas LC-MS/MS analysis displayed no increase in protein expression level. Taken together, we show the existence of redundant function for murine BSPH2 and the lack of BSPH2 itself does not lead to sterility.
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Affiliation(s)
- Marzieh Eskandari-Shahraki
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, Canada.,Departments of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, Canada
| | | | - Puttaswamy Manjunath
- Maisonneuve-Rosemont Hospital Research Centre, Montreal, Canada.,Departments of Pharmacology and Physiology, Faculty of Medicine, University of Montreal, Montreal, Canada.,Department of Medicine, Faculty of Medicine, University of Montreal, Montreal, Canada
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27
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Banihani SA. Role of Uric Acid in Semen. Biomolecules 2018; 8:biom8030065. [PMID: 30065172 PMCID: PMC6164278 DOI: 10.3390/biom8030065] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2018] [Revised: 07/15/2018] [Accepted: 07/26/2018] [Indexed: 12/21/2022] Open
Abstract
Since 1963, various research studies and reports have demonstrated the role of uric acid (2,6,8-trihydroxypurine), an end product of adenosine and guanosine catabolism, on semen quality and sperm function. However, this effect has not yet been collectively discussed, even though uric acid has been a well-recognized constituent in semen. Here, we systematically and comprehensively discuss and summarize the role/effect of uric acid in semen quality by searching the main databases for English language articles considering this topic. Additionally, certain significant and relevant papers were considered to support discussions and perceptions. In conclusion, uric acid contributes to maintaining and enhancing sperm motility, viability, and morphology; therefore, protecting sperm function and fertilizing ability. This contribution is performed mainly by neutralizing the damaging effect of oxidizing (e.g., endogenous free radicals and exogenous toxins) and nitrating agents and enhancing certain bioactive enzymes in spermatozoa. In contrast, high levels of uric acid may induce adverse effects to sperm function, at least in part, by reducing the activity of vital enzymes in spermatozoa. However, further research, mainly clinical, is still required to fully explore the role/effect of uric acid in semen.
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Affiliation(s)
- Saleem Ali Banihani
- Department of Medical Laboratory Sciences, Jordan University of Science and Technology, Irbid 22110, Jordan.
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28
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Kheirollahi A, Abbaszadeh A, Anbari K, Rostami B, Ahangari A, Hasanvand A, Gholami M. Troxerutin protect sperm, seminiferous epithelium and pituitary-gonadal axis from torsion-detorsion injury: An experimental study. Int J Reprod Biomed 2018. [DOI: 10.29252/ijrm.16.5.315] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
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29
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Gloria A, Wegher L, Carluccio A, Valorz C, Robbe D, Contri A. Factors affecting staining to discriminate between bull sperm with greater and lesser mitochondrial membrane potential. Anim Reprod Sci 2017; 189:51-59. [PMID: 29279197 DOI: 10.1016/j.anireprosci.2017.12.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/06/2017] [Accepted: 12/14/2017] [Indexed: 11/17/2022]
Abstract
The sperm mitochondrial membrane potential (MMP) is usually evaluated using the JC-1 dye. This study aimed to verify the effect of incubation temperature (25 °C or 38 °C), incubation time (10, 30, and 45 min), JC-1 stain concentration (0.2 μM, 2 μM, 8 μM, 12 μM), and the presence of glycerol (6.6% compared with 0%), on the capacity of the stain to discriminate between sperm with high mitochondrial membrane potential (hMMP) and low mitochondrial membrane potential (lMMP) in fresh and frozen bull sample by both flow cytometry and epifluorescence microscopy. The temperature (38 °C for 10 min) and the dye concentration (8 μM and 12 μM) resulted in a greater proportion of hMMP (P < .05). The incubation for 45 min at 38 °C resulted in a significant reduction of hMMP in samples stained with JC-1 dye at 8 μM and 12 μM (P < .01). A longer incubation time (45 min) and greater dye concentration (8 μM and 12 μM) resulted in an increased proportion of hMMP sperm in cryopreserved samples. Fresh sperm incubated with glycerol had a hMMP (P < .05). Data for the present study indicate that the optimal incubation temperature was 38 °C, with an incubation time differing between fresh (10-30 min) and cryopreserved sperm (at least 45 min). Furthermore, the JC-1 dye concentration used that could reliably detect the proportion of hMMP sperm was 2 μM in fresh samples, and at least 8 μM in cryopreserved sperm.
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Affiliation(s)
- Alessia Gloria
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy.
| | - Laura Wegher
- Provincial Breeders Federation of Trento, Via delle Bettine 40, 38121 Trento, Italy
| | - Augusto Carluccio
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
| | - Claudio Valorz
- Provincial Breeders Federation of Trento, Via delle Bettine 40, 38121 Trento, Italy
| | - Domenico Robbe
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
| | - Alberto Contri
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
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Aitken RJ. Reactive oxygen species as mediators of sperm capacitation and pathological damage. Mol Reprod Dev 2017; 84:1039-1052. [PMID: 28749007 DOI: 10.1002/mrd.22871] [Citation(s) in RCA: 330] [Impact Index Per Article: 47.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Accepted: 07/23/2017] [Indexed: 12/12/2022]
Abstract
Oxidative stress plays a major role in the life and death of mammalian spermatozoa. These gametes are professional generators of reactive oxygen species (ROS), which appear to derive from three potential sources: sperm mitochondria, cytosolic L-amino acid oxidases, and plasma membrane Nicotinamide adenine dinucleotide phosphate oxidases. The oxidative stress created via these sources appears to play a significant role in driving the physiological changes associated with sperm capacitation through the stimulation of a cyclic adenosine monophosphate/Protein kinase A phosphorylation cascade, including the activation of Extracellular signal regulated kinase-like proteins, massive up-regulation of tyrosine phosphorylation in the sperm tail, as well as the induction of sterol oxidation. When generated in excess, however, ROS can induce lipid peroxidation that, in turn, disrupts membrane characteristics that are critical for the maintenance of sperm function, including the capacity to fertilize an egg. Furthermore, the lipid aldehydes generated as a consequence of lipid peroxidation bind to proteins in the mitochondrial electron transport chain, triggering yet more ROS generation in a self-perpetuating cycle. The high levels of oxidative stress created as a result of this process ultimately damage the DNA in the sperm nucleus; indeed, DNA damage in the male germ line appears to be predominantly induced oxidatively, reflecting the vulnerability of these cells to such stress. Extensive evaluation of antioxidants that protect the spermatozoa against oxidative stress while permitting the normal reduction-oxidation regulation of sperm capacitation is therefore currently being undertaken, and has already proven efficacious in animal models.
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Affiliation(s)
- Robert J Aitken
- Discipline of Biological Sciences Priority Research Centre in Reproductive Science, The University of Newcastle, Callaghan, NSW, Australia
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Chae MR, Kang SJ, Lee KP, Choi BR, Kim HK, Park JK, Kim CY, Lee SW. Onion (Allium cepa L.) peel extract (OPE) regulates human sperm motility via protein kinase C-mediated activation of the human voltage-gated proton channel. Andrology 2017; 5:979-989. [PMID: 28805023 DOI: 10.1111/andr.12406] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Revised: 06/13/2017] [Accepted: 06/27/2017] [Indexed: 01/14/2023]
Abstract
Onion (Allium cepa L.) and quercetin protect against oxidative damage and have positive effects on multiple functional parameters of spermatozoa, including viability and motility. However, the associated underlying mechanisms of action have not yet been identified. The aim of this study was to investigate the effect of onion peel extract (OPE) on voltage-gated proton (Hv1) channels, which play a critical role in rapid proton extrusion. This process underlies a wide range of physiological processes, particularly male fertility. The whole-cell patch-clamp technique was used to record the changes in Hv1 currents in HEK293 cells transiently transfected with human Hv1 (HVCN1). The effects of OPE on human sperm motility were also analyzed. OPE significantly activated the outward-rectifying proton currents in a concentration-dependent manner, with an EC50 value of 30 μg/mL. This effect was largely reversible upon washout. Moreover, OPE induced an increase in the proton current amplitude and decreased the time constant of activation at 0 mV from 4.9 ± 1.7 to 0.6 ± 0.1 sec (n = 6). In the presence of OPE, the half-activation voltage (V1/2 ) shifted in the negative direction, from 20.1 ± 5.8 to 5.2 ± 8.7 mV (n = 6), but the slope was not significantly altered. The OPE-induced current was profoundly inhibited by 10 μm Zn2+ , the most potent Hv1 channel inhibitor, and was also inhibited by treatment with GF109203X, a specific protein kinase C (PKC) inhibitor. Furthermore, sperm motility was significantly increased in the OPE-treated groups. OPE exhibits protective effects on sperm motility, at least partially via regulation of the proton channel. Moreover, similar effects were exerted by quercetin, the major flavonoid in OPE. These results suggest OPE, which is rich in the potent Hv1 channel activator quercetin, as a possible new candidate treatment for human infertility.
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Affiliation(s)
- M R Chae
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - S J Kang
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
| | - K P Lee
- Laboratory of Physiology, College of Veterinary Medicine, Chungnam National University, Daejeon, Korea
| | - B R Choi
- Department of Urology, Medical School and Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - H K Kim
- College of Pharmacy, Kyungsung University, Busan, Korea
| | - J K Park
- Department of Urology, Medical School and Institute for Medical Sciences, Chonbuk National University, Research Institute and Clinical Trial Center of Medical Device of Chonbuk National University Hospital, Jeonju, Korea
| | - C Y Kim
- College of Pharmacy and Institute of Pharmaceutical Science and Technology, Hanyang University, Ansan, Korea
| | - S W Lee
- Department of Urology, Samsung Medical Center, Samsung Biomedical Research Institute, Sungkyunkwan University School of Medicine, Seoul, Korea
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Gao S, Li C, Chen L, Zhou X. Actions and mechanisms of reactive oxygen species and antioxidative system in semen. Mol Cell Toxicol 2017. [DOI: 10.1007/s13273-017-0015-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Losano JDA, Angrimani DSR, Dalmazzo A, Rocha CC, Brito MM, Perez EGA, Tsunoda RH, Góes PAA, Mendes CM, Assumpção MEOA, Barnabe VH, Nichi M. Effect of Vitamin E and Polyunsaturated Fatty Acids on Cryopreserved Sperm Quality in Bos taurus Bulls Under Testicular Heat Stress. Anim Biotechnol 2017; 29:100-109. [PMID: 28537816 DOI: 10.1080/10495398.2017.1322973] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Taurine bulls are highly susceptible to heat stress, leading to increased oxidative stress (OS) and impaired sperm viability. Polyunsaturated fatty acids (PUFAs) supplementation can be an alternative to improve semen quality, which also results in more sperm susceptibility to lipid peroxidation. Moreover, this deleterious effect can be exacerbated in animals affected by heat stress. Vitamin E is a key antioxidant that counteracts lipid peroxidation of sperm membrane caused by OS. Thus, combining PUFAs with vitamin E may improve sperm quality. In this context, this study aimed to evaluate the effect of interaction between PUFAs and vitamin E on sperm quality in Bos taurus bulls under testicular heat stress. Sixteen taurine bulls under testicular heat stress were randomly assigned in four groups: Control, Vitamin E, PUFA, and PUFA + Vitamin E. All groups lasted for 60 days. Samples were cryopreserved/thawed and analyzed for motility variables (CASA), membrane and acrosome integrity, mitochondrial activity, susceptibility to oxidative stress, DNA integrity, and sperm-binding capacity. Results showed that vitamin E had a beneficial effect on some sperm characteristics, whereas PUFA supplementation had an adverse effect when the two treatments were evaluated separately. Finally, the association between PUFAs and vitamin E did not improve sperm quality.
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Affiliation(s)
- João D A Losano
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Daniel S R Angrimani
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Andressa Dalmazzo
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Carolina C Rocha
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Maíra M Brito
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Eduardo G A Perez
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Roberta H Tsunoda
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Paola A A Góes
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Camilla M Mendes
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Mayra E O A Assumpção
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Valquiria H Barnabe
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - Marcilio Nichi
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
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The Stimulated Glycolytic Pathway Is Able to Maintain ATP Levels and Kinetic Patterns of Bovine Epididymal Sperm Subjected to Mitochondrial Uncoupling. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:1682393. [PMID: 28588746 PMCID: PMC5446860 DOI: 10.1155/2017/1682393] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 03/08/2017] [Indexed: 01/24/2023]
Abstract
Studies have reported the importance of mitochondria in sperm functionality. However, for some species, the glycolytic pathway appears to be as important as oxidative phosphorylation in ATP synthesis and sperm kinetics. These mechanisms have not been fully elucidated for bovine spermatozoa. Therefore, the aim of this study was to evaluate the role of mitochondria and the glycolytic pathway in ATP synthesis, sperm movement patterns, and oxidative homeostasis of epididymal spermatozoa in bovine specimens. We observed that mitochondrial uncoupling with protonophores significantly reduced ATP levels. However, these levels were reestablished after stimulation of the glycolytic pathway. We verified the same pattern of results for sperm kinetic variables and the production of reactive oxygen species (ROS). Thus, we suggest that, after its appropriate stimulation, the glycolytic pathway is capable of maintaining ATP levels, sperm kinetic patterns, and oxidative balance of bovine epididymal spermatozoa submitted to mitochondrial uncoupling.
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Yuan XC, Wang P, Li HW, Wu QB, Zhang XY, Li BW, Xiu RJ. Effects of melatonin on spinal cord injury-induced oxidative damage in mice testis. Andrologia 2016; 49. [DOI: 10.1111/and.12692] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2016] [Indexed: 01/04/2023] Open
Affiliation(s)
- X.-C. Yuan
- Key Laboratory of Microcirculation; Ministry of Health; Institute of Microcirculation; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
| | - P. Wang
- Orthopedics Department; Hebei Provincial Hospital of Traditional Chinese Medicine; Shijiazhuang China
| | - H.-W. Li
- Key Laboratory of Microcirculation; Ministry of Health; Institute of Microcirculation; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
| | - Q.-B. Wu
- Key Laboratory of Microcirculation; Ministry of Health; Institute of Microcirculation; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
| | - X.-Y. Zhang
- Key Laboratory of Microcirculation; Ministry of Health; Institute of Microcirculation; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
| | - B.-W. Li
- Key Laboratory of Microcirculation; Ministry of Health; Institute of Microcirculation; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
| | - R.-J. Xiu
- Key Laboratory of Microcirculation; Ministry of Health; Institute of Microcirculation; Chinese Academy of Medical Sciences & Peking Union Medical College; Beijing China
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Ding GL, Liu Y, Liu ME, Pan JX, Guo MX, Sheng JZ, Huang HF. The effects of diabetes on male fertility and epigenetic regulation during spermatogenesis. Asian J Androl 2016; 17:948-53. [PMID: 25814158 PMCID: PMC4814953 DOI: 10.4103/1008-682x.150844] [Citation(s) in RCA: 164] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
The effects of diabetes mellitus include long-term damages, dysfunctions, and failures of various organs. An important complication of diabetes is the disturbance in the male reproductive system. Glucose metabolism is an important event in spermatogenesis. Moreover, glucose metabolism is also important for maintaining basic cell activity, as well as specific functions, such as motility and fertilization ability in mature sperm. Diabetic disease and experimentally induced diabetes both demonstrated that either type 1 diabetes or type 2 diabetes could have detrimental effects on male fertility, especially on sperm quality, such as sperm motility, sperm DNA integrity, and ingredients of seminal plasma. Epigenetic modifications are essential during spermatogenesis. The epigenetic regulation represents chromatin modifications including DNA methylation, histone modifications, remodeling of nucleosomes and the higher-order chromatin reorganization and noncoding RNAs. If spermatogenesis is affected during the critical developmental window, embryonic gonadal development, and germline differentiation, environmentally-induced epigenetic modifications may become permanent in the germ line epigenome and have a potential impact on subsequent generations through epigenetic transgenerational inheritance. Diabetes may influence the epigenetic modification during sperm spermatogenesis and that these epigenetic dysregulation may be inherited through the male germ line and passed onto more than one generation, which in turn may increase the risk of diabetes in offspring.
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Affiliation(s)
| | | | | | | | | | | | - He-Feng Huang
- International Peace Maternity and Child Health Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200030; The Key Laboratory of Reproductive Genetics, Ministry of Education (Zhejiang University), Hangzhou 310058, China
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Cao XN, Yan C, Liu DY, Peng JP, Chen JJ, Zhou Y, Long CL, He DW, Lin T, Shen LJ, Wei GH. Fine particulate matter leads to reproductive impairment in male rats by overexpressing phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) signaling pathway. Toxicol Lett 2015; 237:181-90. [DOI: 10.1016/j.toxlet.2015.06.015] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2015] [Revised: 06/08/2015] [Accepted: 06/13/2015] [Indexed: 01/05/2023]
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Aitken JB, Naumovski N, Curry B, Grupen CG, Gibb Z, Aitken RJ. Characterization of an L-Amino Acid Oxidase in Equine Spermatozoa1. Biol Reprod 2015; 92:125. [DOI: 10.1095/biolreprod.114.126052] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 02/19/2015] [Indexed: 11/01/2022] Open
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Yousefniapasha Y, Jorsaraei G, Gholinezhadchari M, Mahjoub S, Hajiahmadi M, Farsi M. Nitric oxide levels and total antioxidant capacity in the seminal plasma of infertile smoking men. CELL JOURNAL 2015; 17:129-36. [PMID: 25870842 PMCID: PMC4393660 DOI: 10.22074/cellj.2015.519] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Accepted: 01/10/2014] [Indexed: 12/12/2022]
Abstract
Objective: Cigarette is a rich source of oxidants and reactive nitrogen species. Nitric oxide
(NO) in high concentration has deleterious effects on human sperm function. Antioxidant
defense system in seminal plasma protects spermatozoa from the attack of reactive
oxygen metabolites. The purpose of this study was to determine the correlation between
cigarette smoking with the NO levels and the total antioxidant capacity (TAC) of the seminal
plasma in infertile smoker men and to compare severity of oxidative stress (OS) in
them with fertile and infertile non-smoking men. Materials and Methods: In this cross sectional study, a total of 95 male participants attended
the Infertility Clinic of the Fatehmeh-zahra Hospital in Babol, Mazandaran Province, Iran, between
2010 and 2011. They were divided into three groups: I. fertile non-smokers (F.ns; n=32),
II. infertile non-smokers (IF.ns; n=30) and III. infertile smokers (IF.s; n=33) according to semen
analysis World Health Organization guidelines (WHO, 2001) and smoking data. TAC concentration
and NO levels of seminal plasma were measured using the ferric reducing ability of
plasma (FRAP) method and the Griess reagent, respectively. Results: Standard sperm parameters were significantly higher in the fertile group than those
in the infertile groups, but these differences between the IF.ns and IF.s were not statistically
significant. The mean TAC in the seminal plasma was higher in the F.ns>IF.ns>IF.s, respectively,
but these differences were not statistically significant among three groups (p= 0.096).
In contrast, the mean NO level in the seminal plasma was lower in the F.ns<IF.ns< IF.s, respectively.
These differences were statistically significant among the three groups (p= 0.018). Conclusion: It argued that the increased NO levels associated with smoking might
exceed the capacity of antioxidant defense system, leading to increased oxidative
damage of seminal plasma and decreased fertility in men.
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Affiliation(s)
- Yousefreza Yousefniapasha
- Fatemeh-zahra Infertility and Reproductive Health Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Gholamali Jorsaraei
- Fatemeh-zahra Infertility and Reproductive Health Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Maryam Gholinezhadchari
- Fatemeh-zahra Infertility and Reproductive Health Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Soleiman Mahjoub
- Fatemeh-zahra Infertility and Reproductive Health Research Center, Babol University of Medical Sciences, Babol, Iran ; Department of Biochemistry and Biophysics, Faculty of Medicine, Babol University of Medical Sciences, Babol, Iran
| | - Mahmoud Hajiahmadi
- Infectious Diseases and Tropical Medicine Research Center, Babol University of Medical Sciences, Babol, Iran
| | - Mehrdad Farsi
- Fatemeh-zahra Infertility and Reproductive Health Research Center, Babol University of Medical Sciences, Babol, Iran
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Assessment of the protective role of vitamin E in atrazine toxicity on the testis of adult albino rats. ACTA ACUST UNITED AC 2014. [DOI: 10.1097/01.ehx.0000452051.31994.b0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Agarwal A, Sharma RK, Sharma R, Assidi M, Abuzenadah AM, Alshahrani S, Durairajanayagam D, Sabanegh E. Characterizing semen parameters and their association with reactive oxygen species in infertile men. Reprod Biol Endocrinol 2014; 12:33. [PMID: 24885775 PMCID: PMC4047553 DOI: 10.1186/1477-7827-12-33] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2014] [Accepted: 04/26/2014] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND A routine semen analysis is a first step in the laboratory evaluation of the infertile male. In addition, other tests such as measurement of reactive oxygen species can provide additional information regarding the etiology of male infertility. The objective of this study was to investigate the association of semen parameters with reactive oxygen species (ROS) in two groups: healthy donors of unproven and proven fertility and infertile men. In addition, we sought to establish an ROS cutoff value in seminal plasma at which a patient may be predicted to be infertile. METHODS Seminal ejaculates from 318 infertile patients and 56 donors, including those with proven fertility were examined for semen parameters and ROS levels. Correlations were determined between traditional semen parameters and levels of ROS among the study participants. ROS levels were measured using chemiluminescence assay. Receiver operating characteristic curves were obtained to calculate a cutoff value for these tests. RESULTS Proven Donors (n = 28) and Proven Donors within the past 2 years (n = 16) showed significantly better semen parameters than All Patients group (n = 318). Significantly lower ROS levels were seen in the two Proven Donor groups compared with All Patients. The cutoff value of ROS in Proven Donors was determined to be 91.9 RLU/s with a specificity of 68.8% and a sensitivity of 93.8%. CONCLUSIONS Infertile men, irrespective of their clinical diagnoses, have reduced semen parameters and elevated ROS levels compared to proven fertile men who have established a pregnancy recently or in the past. Reactive oxygen species are negatively correlated with traditional semen parameters such as concentration, motility and morphology. Measuring ROS levels in the seminal ejaculates provides clinically-relevant information to clinicians.
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Affiliation(s)
- Ashok Agarwal
- Center for Reproductive Medicine, Cleveland Clinic, Cleveland, Ohio 44106, USA
| | - Rakesh K Sharma
- Center for Reproductive Medicine, Cleveland Clinic, Cleveland, Ohio 44106, USA
| | - Reecha Sharma
- Health Services Department, Saint Joseph University, 5600 City Avenue, Philadelphia, PA 19131, USA
| | - Mourad Assidi
- Center of Excellence in Genomic Medicine Research, King AbdulAziz University, Jeddah, Saudi Arabia
- KACST Technology Innovation Center in Personalized Medicine at King AbdulAziz University, Jeddah, Saudi Arabia
| | - Adel M Abuzenadah
- Center of Excellence in Genomic Medicine Research, King AbdulAziz University, Jeddah, Saudi Arabia
- KACST Technology Innovation Center in Personalized Medicine at King AbdulAziz University, Jeddah, Saudi Arabia
| | - Saad Alshahrani
- Center for Reproductive Medicine, Cleveland Clinic, Cleveland, Ohio 44106, USA
- Department of Surgery, Salman Bin Abdulaziz University, College of Medicine, Alkharj, Saudi Arabia
| | - Damayanthi Durairajanayagam
- Center for Reproductive Medicine, Cleveland Clinic, Cleveland, Ohio 44106, USA
- MARA University of Technology, Sungai Buloh Campus, Jalan Hospital, 47000 Sungai Buloh, Selangor Darul Ehsan, Malaysia
| | - Edmund Sabanegh
- Center for Reproductive Medicine, Cleveland Clinic, Cleveland, Ohio 44106, USA
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Losano JDA, Angrimani DSR, Pereira RJG, Rocha AM, Criscuolo TS, Barnabe VH, Barnabe RC, Mendes CM, Assumpção MEOA, Nichi M. Utilisation of sperm-binding assay combined with computer-assisted sperm analysis to evaluate frozen-thawed bull semen. Andrologia 2014; 47:77-84. [DOI: 10.1111/and.12225] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/26/2013] [Indexed: 11/29/2022] Open
Affiliation(s)
- J. D. A. Losano
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - D. S. R. Angrimani
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - R. J. G. Pereira
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - A. M. Rocha
- Obstetrics and Gynecology Department; University of Michigan; Ann Arbor MI USA
| | - T. S. Criscuolo
- Embryology Department; Huntington Medicina Reprodutiva; São Paulo Brazil
| | - V. H. Barnabe
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - R. C. Barnabe
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - C. M. Mendes
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - M. E. O. A. Assumpção
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - M. Nichi
- Department of Animal Reproduction; College of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
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Soleimani Rad S, Abbasalizadeh S, Ghorbani Haghjo A, Sadagheyani M, Montaseri A, Soleimani Rad J. Serum Levels of Melatonin and Oxidative Stress Markers and Correlation between Them in Infertile Men. J Caring Sci 2013; 2:287-94. [PMID: 25276737 DOI: 10.5681/jcs.2013.034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2013] [Accepted: 06/27/2013] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION Infertility is the problem of 15% of young couples in different societies. One of the factors that could affect fertility is oxidative stress. Therefore, the aim of the present study is to investigate the level of Melatonin, a free radical scavenger, and its correlation with oxidative biomarkers in infertile men. METHODS For this purpose, fertile and infertile men in 2 groups, 30 people in each group, were studied. The fertile men were selected from husbands of patients admitted to Alzahra obstetric and gynecology hospital, according to WHO standards. The infertile men were selected from patients referred to infertility ward. Blood sampling from the participants carried out at a specific time, sera collected and the levels of malondialdehyde, total antioxidant capacity and Melatonin were detected in the sera. The data were analyzed using t-test and Sperman's correlation method. RESULTS Melatonin level in the sera from fertile men were 522 (39.32) ng/L and in infertile men were 511.78 (34.6) ng/L. MDA level in fertile and infertile men were 2.26 (0.34) vs 2.99 (0.44) nmol/ml which was significantly different. The level of TAC in the sera from fertile men were significantly higher than in infertile men. The result obtained for correlation coefficient Spearman's test revealed a significant, strong and direct correlation between Melatonin and TAC and a significant and reverse correlation between melatonin and MDA. CONCLUSION It is concluded that melatonin could be involved in infertility. In other word, melatonin treatment and antioxidant-rich nutrition could help fertility by combating oxidative stress.
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Affiliation(s)
- Sara Soleimani Rad
- Department of Obstetrics and Gynecology, Alzahra Hospital, Faculty of Medicine,Tabriz University of Medical Sciences, Tabriz, Iran
| | - Shamsi Abbasalizadeh
- Women's Reproductive Health Research Center,Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Ghorbani Haghjo
- Department of Medical Biochemistry, Faculty of Medicine,Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mehzad Sadagheyani
- Women's Reproductive Health Research Center,Tabriz University of Medical Sciences, Tabriz, Iran
| | - Azadeh Montaseri
- Department of Anatomical Sciences, Faculty of Medicine,Tabriz University of Medical Sciences, Tabriz, Iran
| | - Jafar Soleimani Rad
- Department of Anatomical Sciences, Faculty of Medicine,Tabriz University of Medical Sciences, Tabriz, Iran
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Oxidative stress, spermatozoa and leukocytic infiltration: relationships forged by the opposing forces of microbial invasion and the search for perfection. J Reprod Immunol 2013; 100:11-9. [DOI: 10.1016/j.jri.2013.06.005] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 06/10/2013] [Accepted: 06/26/2013] [Indexed: 11/22/2022]
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Yuan S, Zheng H, Zheng Z, Yan W. Proteomic analyses reveal a role of cytoplasmic droplets as an energy source during epididymal sperm maturation. PLoS One 2013; 8:e77466. [PMID: 24155961 PMCID: PMC3796460 DOI: 10.1371/journal.pone.0077466] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2013] [Accepted: 09/02/2013] [Indexed: 11/29/2022] Open
Abstract
A small portion of cytoplasm is generally retained as the cytoplasmic droplet (CD) on the flagellum of spermatozoa after spermiation in mice. CDs are believed to play a role in osmoadaptation by allowing water entrance or exit. However, many lines of evidence suggest that CDs may have roles beyond osmoregulation. To gain more insights, we purified CDs from murine epididymal spermatozoa and conducted proteomic analyses on proteins highly enriched in CDs. Among 105 proteins identified, 71 (68%) were enzymes involved in energy metabolism. We also found that sperm mitochondria underwent a reactivation process and glycolytic enzymes were further distributed and incorporated into different regions of the flagellum during epididymal sperm maturation. Both processes appeared to require CDs. Our data suggest that the CD represents a transient organelle that serves as an energy source essential for epididymal sperm maturation.
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Affiliation(s)
- Shuiqiao Yuan
- Department of Laboratory Animal Medicine, China Medical University, Shenyang, China
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States of America
| | - Huili Zheng
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States of America
| | - Zhihong Zheng
- Department of Laboratory Animal Medicine, China Medical University, Shenyang, China
| | - Wei Yan
- Department of Laboratory Animal Medicine, China Medical University, Shenyang, China
- Department of Physiology and Cell Biology, University of Nevada School of Medicine, Reno, Nevada, United States of America
- * E-mail:
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da Silva BF, Souza GHMF, Turco EGL, Del Giudice PT, Soler TB, Spaine DM, Borrelli M, Gozzo FC, Pilau EJ, Garcia JS, Ferreira CR, Eberlin MN, Bertolla RP. Differential seminal plasma proteome according to semen retrieval in men with spinal cord injury. Fertil Steril 2013; 100:959-69. [DOI: 10.1016/j.fertnstert.2013.06.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Revised: 06/06/2013] [Accepted: 06/06/2013] [Indexed: 11/30/2022]
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Aitken RJ, Nixon B. Sperm capacitation: a distant landscape glimpsed but unexplored. Mol Hum Reprod 2013; 19:785-93. [DOI: 10.1093/molehr/gat067] [Citation(s) in RCA: 142] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
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Atilgan D, Parlaktas BS, Uluocak N, Erdemir F, Kilic S, Erkorkmaz U, Ozyurt H, Markoc F. Weight loss and melatonin reduce obesity-induced oxidative damage in rat testis. Adv Urol 2013; 2013:836121. [PMID: 24089609 PMCID: PMC3780536 DOI: 10.1155/2013/836121] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 08/07/2013] [Indexed: 01/23/2023] Open
Abstract
Aim. We aimed to evaluate the antioxidant effects of weight loss and melatonin on the obesity-induced oxidative damage in rat testes. Materials and Methods. 28 male Wistar albino rats were randomly divided into 4 groups, each consisting of 7 rats: control group (Group 1), obesity group (Group 2), obesity + MLT group (Group 3), and weight loss group (Group 4). Rats were weighed at the beginning and at the end of the study. Bilateral orchiectomy was performed and 5 cc blood samples were obtained from all of the rats. Superoxide dismutase (SOD), malondialdehyde (MDA), and protein carbonyl (PC) levels were analysed in the testicular tissues and serum. Spermatogenesis was evaluated with the Johnsen scoring system. Results. The testicular tissue and serum levels of MDA, PC, and SOD activity were increased in the obesity group in comparison to the sham operated group (P < 0.05). Weight loss and melatonin treatment ameliorated MDA, PC, and SOD levels in testicular tissue and serum significantly (P < 0.05). There was no significant difference between groups in terms of mean Johnsen score (P = 0.727). Conclusion. Experimentally created obesity caused oxidative stress and both melatonin and weight loss reduced oxidative stress parameters in rat testes.
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Affiliation(s)
- Dogan Atilgan
- Gaziosmanpasa University, Faculty of Medicine, Department of Urology, 60100 Tokat, Turkey
| | - Bekir S. Parlaktas
- Gaziosmanpasa University, Faculty of Medicine, Department of Urology, 60100 Tokat, Turkey
| | - Nihat Uluocak
- Gaziosmanpasa University, Faculty of Medicine, Department of Urology, 60100 Tokat, Turkey
| | - Fikret Erdemir
- Gaziosmanpasa University, Faculty of Medicine, Department of Urology, 60100 Tokat, Turkey
| | - Sahin Kilic
- Gaziosmanpasa University, Faculty of Medicine, Department of Urology, 60100 Tokat, Turkey
| | - Unal Erkorkmaz
- Sakarya University, Faculty of Medicine, Department of Biostatistics and Medical informatics, 54100 Sakarya, Turkey
| | - Huseyin Ozyurt
- Gaziosmanpasa University, Faculty of Medicine, Department of Biochemistry, 60100 Tokat, Turkey
| | - Fatma Markoc
- Gaziosmanpasa University, Faculty of Medicine, Department of Pathology, 60100 Tokat, Turkey
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Abstract
The generation of reactive oxygen species associated with cryopreservation could be responsible for mammalian sperm damage and the limitable value of stored semen in artificial insemination. The aim of this study was to assess several antioxidant agents supplemented in a commercial freezing extender (Gent B®) in order to improve post-thaw rabbit sperm quality. Ejaculates of 26 New Zealand White rabbit bucks were collected, evaluated and frozen using a conventional protocol. Antioxidant agents were tested at different concentrations: bovine serum albumin (BSA; 5, 30 or 60 mg/ml), retinol (RO; 50, 100 or 200 μM) and retinyl (RI; 0.282 or 2.82 μg/ml). Per cent viability, morphological abnormalities and intact acrosomes were determined using eosin-nigrosin staining. Motility and progressivity were analyzed by computer-assisted sperm analysis (CASA). In general, all sperm quality parameters were negatively affected by the cryopreservation process, the largest effect seen was for total motility. The addition of antioxidant agents did not improve thaw sperm quality. Furthermore, for RI groups a significant decrease in sperm quality parameters was recorded. In conclusion, rabbit sperm quality is negatively affected by the cryopreservation process. To our knowledge this report is the first using these antioxidants to supplement rabbit freezing extender. BSA and RO at concentrations used in the study did not improve sperm quality parameters after thawing, whereas RI supplementation appeared to be toxic. More studies are required to find the appropriate antioxidants necessary and their most effective concentrations to improve rabbit post-thaw sperm quality.
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Gibb Z, Butler T, Morris L, Maxwell W, Grupen C. Quercetin improves the postthaw characteristics of cryopreserved sex-sorted and nonsorted stallion sperm. Theriogenology 2013; 79:1001-9. [DOI: 10.1016/j.theriogenology.2012.06.032] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2012] [Revised: 06/21/2012] [Accepted: 06/24/2012] [Indexed: 01/17/2023]
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