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Zhao Y, Wang J, Shi S, Lan X, Cheng X, Li L, Zou Y, Jia L, Liu W, Luo Q, Chen Z, Huang C. LanCL2 Implicates in Testicular Redox Homeostasis and Acrosomal Maturation. Antioxidants (Basel) 2024; 13:534. [PMID: 38790639 PMCID: PMC11117947 DOI: 10.3390/antiox13050534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
Redox balance plays an important role in testicular homeostasis. While lots of antioxidant molecules have been identified as widely expressed, the understanding of the critical mechanisms for redox management in male germ cells is inadequate. This study identified LanCL2 as a major male germ cell-specific antioxidant gene that is important for testicular homeostasis. Highly expressed in the brain and testis, LanCL2 expression correlates with testicular maturation and brain development. LanCL2 is enriched in spermatocytes and round spermatids of the testis. By examining LanCL2 knockout mice, we found that LanCL2 deletion did not affect postnatal brain development but injured the sperm parameters of adult mice. With histopathological analysis, we noticed that LanCL2 KO caused a pre-maturation and accelerated the self-renewal of spermatogonial stem cells in the early stage of spermatogenesis. In contrast, at the adult stage, LanCL2 KO damaged the acrosomal maturation in spermiogenesis, resulting in spermatogenic defects with a reduced number and motility of spermatozoa. Furthermore, we show that this disruption of testicular homeostasis in the LanCL2 KO testis was due to dysbalanced testicular redox homeostasis. This study demonstrates the critical role of LanCL2 in testicular homeostasis and redox balance.
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Affiliation(s)
- Yanling Zhao
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Jichen Wang
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Shuai Shi
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Xinting Lan
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Xiangyu Cheng
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Lixia Li
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Yuanfeng Zou
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Lanlan Jia
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Wentao Liu
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Qihui Luo
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Zhengli Chen
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
| | - Chao Huang
- Laboratory of Experimental Animal Disease Model, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (Y.Z.); (J.W.); (S.S.); (X.L.); (X.C.); (L.J.); (W.L.); (Q.L.)
- Key Laboratory of Animal Disease and Human Health of Sichuan Province, College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China; (L.L.); (Y.Z.)
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Hughes JR, McMorrow KJ, Bovin N, Miller DJ. An oviduct glycan increases sperm lifespan by diminishing the production of ubiquinone and reactive oxygen species†. Biol Reprod 2023; 109:356-366. [PMID: 37427962 PMCID: PMC10502565 DOI: 10.1093/biolre/ioad074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 06/02/2023] [Accepted: 06/26/2023] [Indexed: 07/11/2023] Open
Abstract
Sperm storage by females after mating for species-dependent periods is used widely among animals with internal fertilization to allow asynchrony between mating and ovulation. Many mammals store sperm in the lower oviduct where specific glycans on oviduct epithelial cells retain sperm to form a reservoir. Binding to oviduct cells suppresses sperm intracellular Ca2+ and increases sperm longevity. We investigated the mechanisms by which a specific oviduct glycan, 3-O-sulfated Lewis X trisaccharide (suLeX), prolongs the lifespan of porcine sperm. Using targeted metabolomics, we found that binding to suLeX diminishes the abundance of 4-hydroxybenzoic acid, the precursor to ubiquinone (also known as Coenzyme Q), 30 min after addition. Ubiquinone functions as an electron acceptor in the electron transport chain (ETC). 3-O-sulfated Lewis X trisaccharide also suppressed the formation of fumarate. A component of the citric acid cycle, fumarate is synthesized by succinate-coenzyme Q reductase, which employs ubiquinone and is also known as Complex II in the ETC. Consistent with the reduced activity of the ETC, the production of harmful reactive oxygen species (ROS) was diminished. The enhanced sperm lifespan in the oviduct may be because of suppressed ROS production because high ROS concentrations have toxic effects on sperm.
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Affiliation(s)
- Jennifer R Hughes
- Department of Animal Sciences and Institute of Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Katie J McMorrow
- Department of Animal Sciences and Institute of Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
| | - Nicolai Bovin
- Department of Chemical Biology of Glycans and Lipids, Shemyakin Institute of Bioorganic Chemistry, Moscow, Russia
| | - David J Miller
- Department of Animal Sciences and Institute of Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL, USA
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3
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Hughes JR, McMorrow KJ, Bovin N, Miller DJ. An oviduct glycan increases sperm lifespan by diminishing ubiquinone and production of reactive oxygen species. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.01.08.523174. [PMID: 36712093 PMCID: PMC9881936 DOI: 10.1101/2023.01.08.523174] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Sperm storage by females after mating for species-dependent periods is used widely among animals with internal fertilization to allow asynchrony between mating and ovulation. Many mammals store sperm in the lower oviduct where specific glycans on epithelial cells retain sperm to form a reservoir. Binding to oviduct cells suppresses sperm intracellular Ca 2+ and increases sperm longevity. We investigated the mechanisms by which a specific oviduct glycan, 3-O-sulfated Lewis X trisaccharide (suLe X ), prolongs the lifespan of porcine sperm. Using targeted metabolomics, we report that binding to suLe X diminishes the abundance of the precursor to ubiquinone and suppresses formation of fumarate, a specific citric acid cycle component, diminishing the activity of the electron transport chain and reducing the production of harmful reactive oxygen species (ROS). The enhanced sperm lifespan in the oviduct may be due to suppressed ROS production as many reports have demonstrated toxic effects of high ROS concentrations on sperm.
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Escada-Rebelo S, Ramalho-Santos J. Oxidative and Nitrosative Stress Detection in Human Sperm Using Fluorescent Probes. Methods Mol Biol 2023; 2566:45-52. [PMID: 36152241 DOI: 10.1007/978-1-0716-2675-7_4] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
As a natural by-product of mitochondrial respiration, reactive oxygen species (ROS) in sperm play a role in promoting fertilization, by intervening in a series of events. Nevertheless, an abnormal and uncounteracted increase in ROS production leads to oxidative stress (OS) which can, ultimately, culminate in cell death. An established relationship between OS and male infertility highlights the importance of an accurate detection method for ROS content that can be easily implemented and reproduced in any andrology lab. More recently, reactive nitrogen species (RNS) production and subsequent nitrosative stress have also been described. Here we describe the use of fluorescent probes, including some that targeted to the mitochondria due to the coupling of a cation (TPP+), in order to assess the levels of different ROS and RNS in human sperm using flow cytometry and/or fluorescent microscopy. This methodology is user friendly and accurate and can be safely applied in research- and/or clinical-based contexts.
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Affiliation(s)
- Sara Escada-Rebelo
- PhD Programme in Experimental Biology and Biomedicine (BEB), IIIUC- Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal
- Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - João Ramalho-Santos
- Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.
- Department of Life Sciences, University of Coimbra, Coimbra, Portugal.
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5
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Escada-Rebelo S, Cristo MI, Ramalho-Santos J, Amaral S. Mitochondria-Targeted Compounds to Assess and Improve Human Sperm Function. Antioxid Redox Signal 2022; 37:451-480. [PMID: 34847742 DOI: 10.1089/ars.2021.0238] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Significance: Currently 10%-15% of couples in reproductive age face infertility issues. More importantly, male factor contributes to 50% of these cases (either alone or in combination with female causes). Among various reasons, impaired sperm function is the main cause for male infertility. Furthermore, mitochondrial dysfunction and oxidative stress due to increased reactive oxygen species (ROS) production, particularly of mitochondrial origin, are believed to be the main contributors. Recent Advances: Mitochondrial dysfunction, particularly due to increased ROS production, has often been linked to impaired sperm function/quality. For decades, different methods and approaches have been developed to assess mitochondrial features that might correlate with sperm functionality. This connection is now completely accepted, with mitochondrial functionality assessment used more commonly as a readout of sperm functionality. More recently, mitochondria-targeted compounds are on the frontline for both assessment and therapeutic approaches. Critical Issues: In this review, we summarize the current methods for assessing key mitochondrial parameters known to reflect sperm quality as well as therapeutic strategies using mitochondria-targeted antioxidants aiming to improve sperm function in various situations, particularly after sperm cryopreservation. Future Directions: Although more systematic research is needed, mitochondria-targeted compounds definitely represent a promising tool to assess as well as to protect and improve sperm function. Antioxid. Redox Signal. 37, 451-480.
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Affiliation(s)
- Sara Escada-Rebelo
- PhD Programme in Experimental Biology and Biomedicine, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,IIIUC - Institute for Interdisciplinary Research, Casa Costa Alemão, University of Coimbra, Coimbra, Portugal
| | - Maria Inês Cristo
- Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal
| | - João Ramalho-Santos
- Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - Sandra Amaral
- Biology of Reproduction and Stem Cell Group, Center for Neuroscience and Cell Biology, University of Coimbra, Coimbra, Portugal.,IIIUC - Institute for Interdisciplinary Research, Casa Costa Alemão, University of Coimbra, Coimbra, Portugal
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Balu R, Ramachandran SS, Mathimaran A, Jeyaraman J, Paramasivam SG. Functional significance of mouse seminal vesicle sulfhydryl oxidase on sperm capacitation in vitro. Mol Hum Reprod 2022; 29:6637520. [PMID: 35809071 DOI: 10.1093/molehr/gaac025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 06/06/2022] [Indexed: 11/14/2022] Open
Abstract
During ejaculation, cauda epididymal spermatozoa are suspended in a protein-rich solution of seminal plasma which is composed of proteins mostly secreted from the seminal vesicle. These seminal proteins interact with the sperm cells and bring about changes in their physiology, so that they can become capacitated in order for the fertilization to take place. Sulfhydryl oxidase (SOX) is a member of the QSOX family and its expression is found to be high in the seminal vesicle secretion of mouse. Previously, it has been reported to cross-link thiol containing amino acids among major seminal vesicle secretion (SVS) proteins. However, its role in male reproduction is unclear. In this study, we determined the role of SOX on epididymal sperm maturation and also disclosed the binding effect of SOX on the sperm fertilizing ability in vitro. In order to achieve the above two objectives, we constructed a Sox clone (1.7 kb) using a pET-30a vector. His-tagged recombinant Sox was over expressed in Shuffle Escherichia coli cells and purified using His-Trap column affinity chromatography along with hydrophobic interaction chromatography. The purified SOX was confirmed by Western blot analysis and by its activity with DTT as a substrate. Results obtained from immunocytochemical staining clearly indicated that SOX possesses a binding site on the sperm acrosome. The influence of SOX on oxidation of sperm sulfhydryl to disulfides during epididymal sperm maturation was evaluated by a thiol labelling agent, mBBr. The SOX protein binds on to the sperm cells and increases their progressive motility. The effect of SOX binding on reducing the [Ca2+]i concentration in sperm head, was determined using a calcium probe, Fluo-3 AM. The inhibitory influence of SOX on sperm acrosome reaction was shown by using calcium ionophore A32187 to induce the acrosome reaction. The acrosome-reacted sperm were examined by staining with FITC-conjugated Arachis hypogaea (peanut) lectin. Furthermore, immunocytochemical analysis revealed that SOX remains bound to the sperm cells in the uterus but disappears in the oviduct during their transit in the female reproductive tract. The results from the above experiment revealed that SOX binding on to the sperm acrosome prevents sperm capacitation by affecting the [Ca2+]i concentration in the sperm head and the ionophore-induced acrosome reaction. Thus, the binding of SOX on to the sperm acrosome may possibly serve as a decapacitation factor in the uterus to prevent premature capacitation and acrosome reaction, thus preserving their fertilizing ability.
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Affiliation(s)
- Rubhadevi Balu
- Department of Biotechnology, BIT-Campus, Anna University, Tiruchirappalli-620024, Tamil Nadu India
| | | | - Amala Mathimaran
- Department of Bioinformatics, Alagappa University, Karaikudi-630 004, Tamil Nadu, India
| | - Jeyakanthan Jeyaraman
- Department of Bioinformatics, Alagappa University, Karaikudi-630 004, Tamil Nadu, India
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Oda SS, El-Manakhly ESM, Abou-Srag MA, Tohamy HG. Assessment of reproductive toxicity of carbofuran and copper sulfate in male Nile tilapia (Oreochromis niloticus). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:15896-15904. [PMID: 34633618 DOI: 10.1007/s11356-021-16965-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 10/06/2021] [Indexed: 06/13/2023]
Abstract
This study's hypothesis is that carbofuran and copper sulfate have a synergistic harmful impact on the fertility of male Nile tilapia. Hence, this study was designed to assess the toxic reproductive outcome of carbofuran, copper sulfate, and their mixture in male Nile tilapia. Sixty male Nile tilapia fishes were separated into four groups (15 fish/group). The control group; carbofuran group, was given dechlorinated tap water containing 0.02 mg/L (1/10 dose of LC50) carbofuran; copper group was given dechlorinated tap water containing 4.0 mg/L (1/10 dose of LC50) copper sulfate; carbofuran + copper sulfate group received dechlorinated tap water containing 0.02 mg/L carbofuran plus 4.0 mg/L copper sulfate. After 6 weeks, results revealed a significant rise in testicular malondialdehyde levels and a significant decrease in testicular reduced glutathione contents among all experimental groups compared to the control group. Testicular testosterone levels were significantly declined in copper and combined groups compared to the control. The seminal evaluation using computer-assisted sperm analysis showed a significant decline in the progressive motility percentage, motile ratio percentage, sperm concentration, curvilinear velocity, straight-line velocity, average path velocity, and wobble in all intoxicated groups, particularly, the combined group. The histopathology of testes in all intoxicated groups revealed a detachment of the basal membrane of some seminiferous tubules, and others were free from spermatogonia and spermatozoa with interstitial eosinophilic granular cell infiltration. Testicular lesions were more severe in the combined group. Finally, it was concluded that carbofuran and copper sulfate exerted a negative effect on the reproductive function of male Nile tilapia, and they have a synergistic harmful impact on the fertility of male Nile tilapia.
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Affiliation(s)
- Samah S Oda
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Edfina-Behera, 22758, Egypt.
| | - El-Sayed M El-Manakhly
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Edfina-Behera, 22758, Egypt
| | - Mohamed A Abou-Srag
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Edfina-Behera, 22758, Egypt
| | - Hossam G Tohamy
- Department of Pathology, Faculty of Veterinary Medicine, Alexandria University, Edfina-Behera, 22758, Egypt
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Ayad B, Omolaoye TS, Louw N, Ramsunder Y, Skosana BT, Oyeipo PI, Du Plessis SS. Oxidative Stress and Male Infertility: Evidence From a Research Perspective. FRONTIERS IN REPRODUCTIVE HEALTH 2022; 4:822257. [PMID: 36303652 PMCID: PMC9580735 DOI: 10.3389/frph.2022.822257] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Accepted: 01/17/2022] [Indexed: 11/30/2022] Open
Abstract
Male fertility potential can be influenced by a variety of conditions that frequently coincide. Spermatozoa are particularly susceptible to oxidative damage due to their limited antioxidant capacity and cell membrane rich in polyunsaturated fatty acids (PUFAs). The role of oxidative stress (OS) in the etiology of male infertility has been the primary focus of our Stellenbosch University Reproductive Research Group (SURRG) over the last 10 years. This review aims to provide a novel insight into the impact of OS on spermatozoa and male reproductive function by reviewing the OS-related findings from a wide variety of studies conducted in our laboratory, along with those emerging from other investigators. We will provide a concise overview of the production of reactive oxygen species (ROS) and the development of OS in the male reproductive tract along with the physiological and pathological effects thereof on male reproductive functions. Recent advances in methods and techniques used for the assessment of OS will also be highlighted. We will furthermore consider the current evidence regarding the association between OS and ejaculatory abstinence period, as well as the potential mechanisms involved in the pathophysiology of various systemic diseases such as obesity, insulin resistance, hypertension, and certain mental health disorders which have been shown to cause OS induced male infertility. Finally, special emphasis will be placed on the potential for transferring and incorporating research findings emanating from different experimental studies into clinical practice.
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Affiliation(s)
- Bashir Ayad
- Department of Physiology, Faculty of Medicine, Misurata University, Misrata, Libya
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Temidayo S. Omolaoye
- Department of Basic Medical Sciences, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
| | - Nicola Louw
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Yashthi Ramsunder
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Bongekile T. Skosana
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Peter I. Oyeipo
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
- Department of Physiology, College of Health Sciences, Osun State University, Osogbo, Nigeria
| | - Stefan S. Du Plessis
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
- Department of Basic Medical Sciences, Mohammed Bin Rashid University of Medicine and Health Sciences, Dubai, United Arab Emirates
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9
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Ahmed O, Lehloenya K, Mphaphathi M, Hassen A. Effect of Acacia mearnsii Tannin Extract Supplementation on Reproductive Performance and Oxidative Status of South African Mutton Merino Rams. Animals (Basel) 2021; 11:ani11113266. [PMID: 34827997 PMCID: PMC8614374 DOI: 10.3390/ani11113266] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 11/06/2021] [Accepted: 11/08/2021] [Indexed: 01/14/2023] Open
Abstract
Simple Summary Nutrition and the seasons are two of the better-known variables that affect the reproductive performance of farm animals. In recent years, many antioxidants have been proposed as a tool to improve male reproductive performance. Although such antioxidants, in most cases, are expensive and artificial, tannin extract presents a cheap and natural source of antioxidants. This research evaluated the supplementation effects of tannin extract (TE) and encapsulated tannin extract (ETE) on testicular measurements, semen quality, hormonal status, and oxidative status, as well as the seasonal effect on the testicular measurements of South African Mutton Merino rams. The results suggest that the encapsulation may afford the maximum benefit of TE on sperm concentration and motility. Treatments did not affect the hormonal and oxidative status. The testicular measurements were significantly higher in autumn compared to winter. The plasma level of cortisol correlates negatively with sperm mass motility, progressive motility, viability, and acrosome integrity. Abstract We investigated the supplementation effects of Acacia mearnsii tannin extract (TE) and encapsulated tannin extract (ETE) on reproductive performance and oxidative status of South African Mutton Merino rams. We also observed the season effect on the testicular measurements. Thirty rams were divided into five groups: 0.0 g TE (control), 1.5 g TE, 3 g TE, 1.5 g ETE, and 3 g ETE supplemented daily for 16 weeks transiting from autumn to winter. Bodyweight and testicular measurements were recorded biweekly. Semen and blood samples were collected weekly during the last five weeks of supplementation. Results showed that the increase in the ETE from 1.5 to 3 g increased the testicular length and sperm concentration, as well as decreased the percentages of low and non-progressive spermatozoa (p<0.05). Simultaneously, the increase in the TE from 1.5 to 3 g decreased semen volume and elevated the percentage of abnormal sperm (p<0.05). The results suggest that the encapsulation of TE affords the maximum benefit of the TE on the sperm quality. Treatments did not affect the hormonal and oxidative status. Testicular measurements were significantly higher in autumn compared to winter. The plasma level of cortisol significantly correlates negatively with sperm motility, viability, and acrosome integrity.
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Affiliation(s)
- Osman Ahmed
- Department of Animal Science, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa;
- Department of Dairy Production, Faculty of Animal Production, University of Khartoum, P.O. Box 321, Khartoum 11111, Sudan
| | - Khoboso Lehloenya
- Department of Agriculture, University of Zululand, Private Bag X1001, KwaDlangezwa 3886, South Africa; or
| | - Masindi Mphaphathi
- Agricultural Research Council, Animal Production, Germplasm Conservation and Reproductive Biotechnologies, Private Bag X2, Pretoria 0062, South Africa;
| | - Abubeker Hassen
- Department of Animal Science, University of Pretoria, Private Bag X20, Hatfield, Pretoria 0028, South Africa;
- Correspondence:
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10
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Quilaqueo N, Villegas JV. Endocrine disruptor chemicals. A review of their effects on male reproduction and antioxidants as a strategy to counter it. Andrologia 2021; 54:e14302. [PMID: 34761829 DOI: 10.1111/and.14302] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 09/28/2021] [Indexed: 12/18/2022] Open
Abstract
Endocrine disruptor chemicals are exogenous molecules that generate adverse effects on human health by destabilizing the homeostasis of endocrine system and affecting directly human reproductive system by inhibiting or activating oestrogenic or androgenic receptors. Endocrine disruptor chemicals generate transgenerational epigenetic problems, besides being associated with male infertility. Epidemiological data indicate that the increase in reproductive problems in males in the last 50 years is correlated with the increase of endocrine disrupting chemicals in the environment, being associated with a decrease in semen quality and direct effects on spermatozoa, such as alterations in motility, viability and acrosomal reaction, due to the generation of oxidative stress, and have also been postulated as a possible cause of testicular dysgenesis syndrome. Diverse antioxidants, such as C and E vitamins, N-acetylcysteine, selenium and natural vegetable extracts, are among the alternatives under study to counter the effects of endocrine disruptor chemicals. In some cases, the usage of them has given positive results and the opposite in others. In this review, we summarize the recent information about the effects of endocrine disruptor chemicals on male reproduction, on sperm cells, and the results of studies that have tested antioxidants as a strategy to diminish their harmful effects.
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Affiliation(s)
- Nelson Quilaqueo
- Center of Reproductive Biotechnology - Scientific and Technological Bioresource Nucleus (CEBIOR - BIOREN), University of La Frontera, Temuco, Chile
| | - Juana V Villegas
- Center of Reproductive Biotechnology - Scientific and Technological Bioresource Nucleus (CEBIOR - BIOREN), University of La Frontera, Temuco, Chile.,Department of Internal Medicine, Faculty of Medicine, University of La Frontera, Temuco, Chile
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11
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Ibáñez-Arancibia E, Farías JG, Valdebenito I. Use of antioxidants and time of cold storage: effects over viability parameters and enzymatic levels in semen of rainbow trout (Oncorhynchus mykiss, Walbaum, 1792). BRAZ J BIOL 2021; 83:e245329. [PMID: 34378663 DOI: 10.1590/1519-6984.245329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2020] [Accepted: 01/07/2021] [Indexed: 11/21/2022] Open
Abstract
The cold storage of milt implies potentials alterations in its quality because the storage generates as main process, free radicals that produce spermatozoa membrane lipids damage with the consequent motility and fertilising capacity disruptions. To decrease the damage generated by free radicals the cells have antioxidant defences (proteins, enzymes, and low molecular weight substances). The objective of the present study evaluated the time storage effect and different antioxidants prepared in spermatic diluents on sperm viability of O. mykiss milt stored at 4°C. The two-way ANOVA denoted that the time storage and antioxidant influence have significant effects separated or combined on viability parameters (sperm motility and viability, proteins concentrations and superoxide dismutase enzymatic activity in seminal plasma). In contrast, only the storage time affected the fertilising capacity and catalase enzymatic activity in seminal plasma. The resulting analysis can conclude that the antioxidant presence improves the viability of cold stored milt, especially the transport conditions and the antioxidants allow the fecundity despite motility decrease.
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Affiliation(s)
- E Ibáñez-Arancibia
- PhD Program in Sciences mentioning Applied Molecular and Cell Biology, La Frontera University, Temuco, Chile.,Laboratory of Engineering, Biotechnology and Applied Biochemistry - LIBBA, Department of Chemical Engineering, Faculty of Engineering and Science, La Frontera University, Temuco, Chile.,Department of Agricultural and Aquaculture Sciences, Faculty of Natural Resources, Catholic University of Temuco, Temuco, Chile
| | - J G Farías
- Laboratory of Engineering, Biotechnology and Applied Biochemistry - LIBBA, Department of Chemical Engineering, Faculty of Engineering and Science, La Frontera University, Temuco, Chile
| | - I Valdebenito
- Department of Agricultural and Aquaculture Sciences, Faculty of Natural Resources, Catholic University of Temuco, Temuco, Chile.,Nucleus of Research in Food Production, Faculty of Natural Resources, Catholic University of Temuco, Temuco, Chile
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12
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Fadda LM, Alsharidah R, Hasan IH. Turmeric and vitamin C mitigate testicular atrophy induced by lead diacetate via regulation of GRP-78/17β-HSD pathways in rat's model. Andrologia 2021; 53:e14120. [PMID: 34028854 DOI: 10.1111/and.14120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Revised: 04/23/2021] [Accepted: 04/29/2021] [Indexed: 11/30/2022] Open
Abstract
Occupational and ecological contacts to lead persist as a universal concern. Lead alters most of the physiological processes via enhancing oxidative stress. Thus, this study was purposed to assess the influence of turmeric (TMRC) and/or vitamin C (VIT-C) on Lead diacetate (Lead diAC)-induced testicular atrophy with an emphasis on oxidative stress, inflammation, BAX/STAR and GRP-78/17β-HSD signalling. Rats were injected with Lead diAC and then treated with TMRC and/or VIT-C orally for 1 week. Lead diAC decreased serum testosterone and testicular glutathione levels. It also decreased superoxide dismutase activity. On the contrary, levels of malondialdehyde, tumour necrosis factor-α, IL-1β and caspase-3 were increased. mRNA levels and protein expressions of GRP-78 and BAX were upregulated, while the expression of both steroidogenic acute regulatory protein and 17β-HSD were downregulated. DNA fragmentation was increased as well. These changes were further confirmed by histopathological findings. Supplementation with TMRC and/or VIT-C ameliorated all of the above parameters. In Conclusion: TMRC or VIT-C specially in combination group prevents Lead diAC testicular damage via reduction of oxidative injury as well as inflammation, downregulation of GRP-78/BAX and upregulation of 17β-HSD and STAR expression as well as improvement in the histological architecture of the testis.
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Affiliation(s)
- Laila Mohamed Fadda
- Department of Pharmacology and Toxicology, Pharmacy College, King Saud University, Riyadh, Saudi Arabia
| | - Reem Alsharidah
- Department of Pharmacology and Toxicology, Pharmacy College, King Saud University, Riyadh, Saudi Arabia
| | - Iman Huseein Hasan
- Department of Pharmacology and Toxicology, Pharmacy College, King Saud University, Riyadh, Saudi Arabia
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13
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Wang X, Hu Y, Han Y, Xue X, Li M, Yang X, Zhou S, Wang H, Liu J. Comprehensive dynamic analysis of proteins in the spermatheca of female Haemaphysalis longicornis after copulation. EXPERIMENTAL & APPLIED ACAROLOGY 2021; 83:583-596. [PMID: 33709252 DOI: 10.1007/s10493-021-00606-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 03/03/2021] [Indexed: 06/12/2023]
Abstract
Ticks are obligate blood-sucking parasitic arthropods. When sucking the blood of hosts, they can also transmit a variety of pathogens to hosts that severely endanger the health of humans and animals. The spermatheca is an organ for the storage and protection of sperm and an important component of the reproductive system of female ticks. The spermatheca content changes dramatically over time after copulation. In particular, some proteins and polypeptide substances can influence the physiological functions of female ticks and promote blood feeding and egg laying by female ticks. To investigate the molecular mechanisms underlying the productive process of Haemaphysalis longicornis, data-independent acquisition (DIA) quantitative proteomics technology was used to perform in-depth research of the dynamic changes in all proteins in the spermatheca of ticks within a short time after copulation to look for key proteins in the spermatheca contents after copulation that affect the reproduction of female ticks in order to provide meaningful information for the comprehensive prevention and control of ticks.
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Affiliation(s)
- Xiaoshuang Wang
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Yuhong Hu
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
- Instrumental Analysis Center, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Yanan Han
- Instrumental Analysis Center, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Xiaomin Xue
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Mengxue Li
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Xiaohong Yang
- Department of Pathogenic Biology, College of Basic Medicine, Hebei Medical University, Shijiazhuang, 050017, Hebei, China
- State Key Laboratory of Veterinary Etiological Biology, Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Lanzhou, 730046, Gansu, China
| | - Siyang Zhou
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China
| | - Hui Wang
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, 050024, Hebei, China.
| | - Jingze Liu
- Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, 20 Nanerhuan East Road, Shijiazhuang, 050024, Hebei, China.
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14
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Nowicka-Bauer K, Szymczak-Cendlak M. Structure and Function of Ion Channels Regulating Sperm Motility-An Overview. Int J Mol Sci 2021; 22:ijms22063259. [PMID: 33806823 PMCID: PMC8004680 DOI: 10.3390/ijms22063259] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 12/18/2022] Open
Abstract
Sperm motility is linked to the activation of signaling pathways that trigger movement. These pathways are mainly dependent on Ca2+, which acts as a secondary messenger. The maintenance of adequate Ca2+ concentrations is possible thanks to proper concentrations of other ions, such as K+ and Na+, among others, that modulate plasma membrane potential and the intracellular pH. Like in every cell, ion homeostasis in spermatozoa is ensured by a vast spectrum of ion channels supported by the work of ion pumps and transporters. To achieve success in fertilization, sperm ion channels have to be sensitive to various external and internal factors. This sensitivity is provided by specific channel structures. In addition, novel sperm-specific channels or isoforms have been found with compositions that increase the chance of fertilization. Notably, the most significant sperm ion channel is the cation channel of sperm (CatSper), which is a sperm-specific Ca2+ channel required for the hyperactivation of sperm motility. The role of other ion channels in the spermatozoa, such as voltage-gated Ca2+ channels (VGCCs), Ca2+-activated Cl-channels (CaCCs), SLO K+ channels or voltage-gated H+ channels (VGHCs), is to ensure the activation and modulation of CatSper. As the activation of sperm motility differs among metazoa, different ion channels may participate; however, knowledge regarding these channels is still scarce. In the present review, the roles and structures of the most important known ion channels are described in regard to regulation of sperm motility in animals.
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Affiliation(s)
- Karolina Nowicka-Bauer
- Department of Chemical Physics, Faculty of Chemistry, Adam Mickiewicz University in Poznań, 61-614 Poznan, Poland
- Correspondence:
| | - Monika Szymczak-Cendlak
- Department of Animal Physiology and Development, Faculty of Biology, Adam Mickiewicz University in Poznań, 61-614 Poznan, Poland;
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15
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Fadl AM, Ghallab ARM, Abou-Ahmed MM, Moawad AR. Melatonin can improve viability and functional integrity of cooled and frozen/thawed rabbit spermatozoa. Reprod Domest Anim 2020; 56:103-111. [PMID: 33145881 DOI: 10.1111/rda.13853] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Accepted: 11/01/2020] [Indexed: 12/29/2022]
Abstract
Melatonin is known to protect sperm against freezing-inflicted damage in different domestic species. The aim of the study was to evaluate the effect of supplementation of semen extender with melatonin on the quality and DNA integrity of cooled and frozen/thawed rabbit spermatozoa. We also investigated whether the addition of melatonin to the semen extender could improve the fertility of rabbit does artificially inseminated with frozen/thawed semen. Semen samples collected from eight rabbit bucks were pooled and then diluted in INRA-82 supplemented either with (0.5, 1.0 or 1.5 mM) or without (0.0 mM) melatonin. Diluted semen was cooled at 5°C for 24 hr. For cryopreservation and based on the first experiment's best result, semen samples were diluted in INRA-82 in the presence or absence of 1.0 mM melatonin and then frozen in 0.25 ml straws. Following cooling or thawing, sperm quality and DNA integrity were evaluated. Furthermore, the fertility of frozen/thawed semen was investigated after artificial insemination. Supplementation of semen extender with 1.0 mM melatonin improved (p < .05) motility, viability, membrane and acrosome integrities in cooled semen compared with other groups. Sperm quality and DNA integrity were higher (p < .05) in frozen/thawed semen diluted in 1.0 mM melatonin-supplemented extender than in the control group. Conception and birth rates were higher in does inseminated with 1.0 mM melatonin treated semen compared with the controls. In conclusion, supplementation of semen extender with 1.0 mM melatonin improved the quality of cooled and frozen/thawed rabbit spermatozoa. Melatonin can preserve DNA integrity and enhance the fertility of frozen/thawed rabbit spermatozoa.
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Affiliation(s)
- Aya M Fadl
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Abdel Raouf M Ghallab
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Mostafa M Abou-Ahmed
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Adel R Moawad
- Department of Theriogenology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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16
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Sánchez-Rubio F, Soria-Meneses PJ, Jurado-Campos A, Bartolomé-García J, Gómez-Rubio V, Soler AJ, Arroyo-Jimenez MM, Santander-Ortega MJ, Plaza-Oliver M, Lozano MV, Garde JJ, Fernández-Santos MR. Nanotechnology in reproduction: Vitamin E nanoemulsions for reducing oxidative stress in sperm cells. Free Radic Biol Med 2020; 160:47-56. [PMID: 32768571 DOI: 10.1016/j.freeradbiomed.2020.07.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/12/2020] [Accepted: 07/17/2020] [Indexed: 01/12/2023]
Abstract
Vitamin E is considered a powerful biological antioxidant; however, its characteristics such as high hydrophobicity and low stability limit its application. We propose to use nanotechnology as an innovative tool in spermatology, formulating nanoemulsions (NE) that accommodate vitamin E, protecting it from oxidation and promoting its release into the medium. The protective effect of the NE against oxidative stress was assessed in red deer epididymal sperm incubated at 37 °C. Cryopreserved sperm from eleven stags were thawed and extended to 400 × 106 sperm/ml in Bovine Gamete Medium (BGM). Once aliquoted, the samples were supplemented with the NE at different concentrations (0, 6 and 12 mM), with or without induced oxidative stress (100 μM Fe2+/ascorbate). The samples were evaluated after 0, 2 and 4 h of incubation at 37 °C. Motility (CASA), viability, mitochondrial membrane potential, acrosomal status, lipoperoxidation (C11 BODIPY 581/591), intracellular reactive oxygen species (ROS) production and DNA status (SCSA®) were assessed. After 2 and 4 h of incubation, the NE were able to prevent the deleterious effects of oxidative stress, thus improving total and progression motility (P ˂0.05). Moreover, the highest concentration tested (12 mM) improved almost every sperm kinematic variable (P ˂0.05) and preserved sperm viability in samples subjected to oxidative stress. In addition, 12 mM of NE protected the acrosomes integrity, maintained and protected mitochondrial activity, prevented sperm lipoperoxidation and reduced ROS production (P ˂0.05) in samples subjected to oxidative stress. This work indicates for the first time that vitamin E formulated in NE could be a new approach against sperm oxidative damage. This could be highly relevant for sperm physiology preservation in the context of assisted reproduction techniques.
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Affiliation(s)
- F Sánchez-Rubio
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Servicio de Farmacia Hospitalaria, Complejo Hospitalario Universitario de Albacete, GAI, Albacete, Spain
| | | | | | | | | | - A J Soler
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
| | - M M Arroyo-Jimenez
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain
| | - M J Santander-Ortega
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain
| | - M Plaza-Oliver
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain
| | - M V Lozano
- Cellular Neurobiology and Molecular Chemistry of the Central Nervous System Group, Faculty of Pharmacy, UCLM, Albacete, Spain; Regional Centre of Biomedical Research (CRIB), UCLM, Albacete, Spain.
| | - J J Garde
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
| | - M R Fernández-Santos
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Faculty of Pharmacy, UCLM, Albacete, Spain.
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17
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Shiri E, Abolhassani F, Khosravizadeh Z, Najafi A, Khanezad M, Vazirian M, Fallahi P, Rezaeian Z, Hedayatpour A. Aqueous Origanum vulgare Extract Improves the Quality of Cryopreserved Human Spermatozoa Through Its Antioxidant Effects. Biopreserv Biobank 2020; 18:329-336. [DOI: 10.1089/bio.2020.0008] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Affiliation(s)
- Elham Shiri
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Farid Abolhassani
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Zahra Khosravizadeh
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Atefeh Najafi
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Maryam Khanezad
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Mahdi Vazirian
- Department of Pharmacognosy, School of Pharmacy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
| | - Parvin Fallahi
- Department of Infertility, Tehran University of Medical Science, Shariati Hospital, Tehran, Iran
| | - Zahra Rezaeian
- Department of Infertility, Tehran University of Medical Science, Shariati Hospital, Tehran, Iran
| | - Azim Hedayatpour
- Department of Anatomy, School of Medicine, Tehran University of Medical Science, Tehran, Iran
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18
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Proskurnina EV, Melnikov NA, Dolgikh OA, Shtaut MI, Chernykh VB. Antioxidant potential of seminal plasma in normozoospermia and asthenozoospermia. ANDROLOGY AND GENITAL SURGERY 2020. [DOI: 10.17650/2070-9781-2020-21-2-14-19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The study objective is to evaluate the antioxidant potential of seminal plasma in normozoospermia and asthenozoospermia.Materials and methods. Samples of ejaculate from 57 men of reproductive age were studied. Standard spermiologic examination and determination of the antioxidant potential of the seminal fluid using an original chemiluminescent method were performed. The method allowed to measure duration of the latent period from the moment of a decrease in luminescence of the solution containing reactive oxygen species (ROS) after addition of the seminal fluid until the most dramatic increase in luminescence corresponding to decreased antioxidant effect of the seminal fluid.Results. In the samples, the latent time varies from 4.6 to 17.5 minutes. Compared with normozoospermia, the antioxidant potential is significantly lower (p = 0.05) in men with asthenozoospermia (about 1.4 times), and even lower in patients with asthenoteratozoospermia (about 1.7 times) (p = 0.03). An inverse weak correlation was found between the activity of leukocytes and latent time in pathospermia (r = –0.23 and –0.18 for asthenozoospermia и asthenoteratozoospermia, respectively). A direct strong correlation was found between ROS-producing sperm activity and latent time in normozoospermia (p = 0.79), and inverse correlation in pathospermia (r = –0.26 and –0.62 for asthenozoospermia и asthenoteratozoospermia, respectively).Conclusion. Pathospermia is characterized by antioxidant seminal plasma deficiency, more pronounced for asthenoteratozoospermia. The antioxidant system of seminal plasma correlates with the ROS-producing ability of leukocytes and, to a greater extent, of the sperm. With normozoospermia, the oxidative balance is maintained, with pathospermia, a higher value of ROS production by sperm corresponds to a lower value of antioxidant capacity.
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Affiliation(s)
| | | | | | - M. I. Shtaut
- N.P. Bochkov Research Centre for Medical Genetics
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19
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Otasevic V, Stancic A, Korac A, Jankovic A, Korac B. Reactive oxygen, nitrogen, and sulfur species in human male fertility. A crossroad of cellular signaling and pathology. Biofactors 2020; 46:206-219. [PMID: 31185138 DOI: 10.1002/biof.1535] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 05/17/2019] [Indexed: 12/23/2022]
Abstract
Infertility is a significant global health problem that currently affects one of six couples in reproductive age. The quality of male reproductive cells dramatically decreased over the last years and almost every aspect of modern life additionally worsen sperm functional parameters that consequently markedly increase male infertility. This clearly points out the importance of finding a new approach to treat male infertility. Redox signaling mediated by reactive oxygen, nitrogen and sulfur species (ROS, RNS, and RSS respectively), has appeared important for sperm reproductive function. Present review summarizes the current knowledge of ROS, RNS, and RSS in male reproductive biology and identifies potential targets for development of novel pharmacological and therapeutic approaches for male infertility by targeted therapeutic modulation of redox signaling.
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Affiliation(s)
- Vesna Otasevic
- University of Belgrade, Institute for Biological Research "Sinisa Stankovic", Belgrade, Serbia
| | - Ana Stancic
- University of Belgrade, Institute for Biological Research "Sinisa Stankovic", Belgrade, Serbia
| | - Aleksandra Korac
- University of Belgrade, Faculty of Biology, Center for Electron Microscopy, Belgrade, Serbia
| | - Aleksandra Jankovic
- University of Belgrade, Institute for Biological Research "Sinisa Stankovic", Belgrade, Serbia
| | - Bato Korac
- University of Belgrade, Institute for Biological Research "Sinisa Stankovic", Belgrade, Serbia
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20
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Chávez JC, Darszon A, Treviño CL, Nishigaki T. Quantitative Intracellular pH Determinations in Single Live Mammalian Spermatozoa Using the Ratiometric Dye SNARF-5F. Front Cell Dev Biol 2020; 7:366. [PMID: 32010689 PMCID: PMC6978660 DOI: 10.3389/fcell.2019.00366] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 12/13/2019] [Indexed: 11/13/2022] Open
Abstract
Intracellular pH (pH i ) plays a crucial role in mammalian sperm physiology. However, it is a challenging task to acquire quantitative single sperm pH i images due to their small size and beating flagella. In this study, we established a robust pH i imaging system using the dual-emission ratiometric pH indicator, SNARF-5F. Simultaneous good signal/noise ratio fluorescence signals were obtained exciting with a green high-power LED (532 nm) and acquiring with an EM-CCD camera through an image splitter with two band-pass filters (550-600 nm, channel 1; 630-650 nm, channel 2). After in vivo calibration, we established an imaging system that allows determination of absolute pH i values in spermatozoa, minimizing cell movement artifacts. Using this system, we determined that bicarbonate increases non-capacitated human pH i with slower kinetics than in mouse spermatozoa. This difference suggests that distinct ionic transporters might be involved in the bicarbonate influx into human and mouse spermatozoa. Alternatively, pH i regulation downstream bicarbonate influx into spermatozoa could be different between the two species.
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Affiliation(s)
| | | | | | - Takuya Nishigaki
- Departamento de Genética del Desarrollo y Fisiología Molecular, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Mexico
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21
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Maravilla-Galván R, Fierro R, González-Márquez H, Gómez-Arroyo S, Jiménez I, Betancourt M. Effects of Atrazine and Fenoxaprop-Ethyl on Capacitation and the Acrosomal Reaction in Boar Sperm. Int J Toxicol 2019; 28:24-32. [DOI: 10.1177/1091581809333138] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
Atrazine is a herbicide of the chloro-s-triazine family. It inhibits photosynthesis in plants and is an endocrine disruptor, but its effects on human health are controversial. Fenoxaprop-ethyl, an aryloxy phenoxyalkanoic acid herbicide, inhibits the biosynthesis of fatty acids and provokes depolarization of membranes. The aim of this study is to evaluate the in vitro effects of both herbicides on capacitation, spontaneous acrosome reaction (SAR) and progesterone-induced acrosome reaction (PIAR) in boar sperm. Sperm capacitation is done in TALP-HEPES media for 4 hours. Capacitation and SAR are evaluated immediately; PIAR, 30 minutes later. LC50 for fenoxaprop-ethyl is 60 mM and 40 mM for atrazine. Fenoxaprop-ethyl induces capacitation at 60 mM and SAR at all concentrations, also increases significantly PIAR. Atrazine decreased capacitation whereas increase significantly SAR and PIAR at all concentrations. It seems that fenoxaprop-ethyl and atrazine accelerate the capacitation and the acrosomal reaction, possibly via plasma membrane destabilization.
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Affiliation(s)
- Ramiro Maravilla-Galván
- From the Doctorado en Ciencias Biológicas, Universidad Autónoma
Metropolitana, México; Ciencias de la Salud, Universidad Autónoma
Metropolitana–Iztapalapa, México; Centro de Ciencias de la Atmósfera, Universidad
Nacional Autónoma Metropolitana, México; and Ciencias de la Salud, Universidad
Autónoma Metropolitana–Iztapalapa, México
| | - Reyna Fierro
- From the Doctorado en Ciencias Biológicas, Universidad Autónoma
Metropolitana, México; Ciencias de la Salud, Universidad Autónoma
Metropolitana–Iztapalapa, México; Centro de Ciencias de la Atmósfera, Universidad
Nacional Autónoma Metropolitana, México; and Ciencias de la Salud, Universidad
Autónoma Metropolitana–Iztapalapa, México
| | - Humberto González-Márquez
- From the Doctorado en Ciencias Biológicas, Universidad Autónoma
Metropolitana, México; Ciencias de la Salud, Universidad Autónoma
Metropolitana–Iztapalapa, México; Centro de Ciencias de la Atmósfera, Universidad
Nacional Autónoma Metropolitana, México; and Ciencias de la Salud, Universidad
Autónoma Metropolitana–Iztapalapa, México
| | - Sandra Gómez-Arroyo
- From the Doctorado en Ciencias Biológicas, Universidad Autónoma
Metropolitana, México; Ciencias de la Salud, Universidad Autónoma
Metropolitana–Iztapalapa, México; Centro de Ciencias de la Atmósfera, Universidad
Nacional Autónoma Metropolitana, México; and Ciencias de la Salud, Universidad
Autónoma Metropolitana–Iztapalapa, México
| | - Irma Jiménez
- From the Doctorado en Ciencias Biológicas, Universidad Autónoma
Metropolitana, México; Ciencias de la Salud, Universidad Autónoma
Metropolitana–Iztapalapa, México; Centro de Ciencias de la Atmósfera, Universidad
Nacional Autónoma Metropolitana, México; and Ciencias de la Salud, Universidad
Autónoma Metropolitana–Iztapalapa, México
| | - Miguel Betancourt
- From the Doctorado en Ciencias Biológicas, Universidad Autónoma
Metropolitana, México; Ciencias de la Salud, Universidad Autónoma
Metropolitana–Iztapalapa, México; Centro de Ciencias de la Atmósfera, Universidad
Nacional Autónoma Metropolitana, México; and Ciencias de la Salud, Universidad
Autónoma Metropolitana–Iztapalapa, México
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Avellar MCW, Ribeiro CM, Dias-da-Silva MR, Silva EJR. In search of new paradigms for epididymal health and disease: innate immunity, inflammatory mediators, and steroid hormones. Andrology 2019; 7:690-702. [PMID: 31207127 DOI: 10.1111/andr.12654] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 04/22/2019] [Accepted: 04/29/2019] [Indexed: 02/07/2023]
Abstract
The primary job of the epididymis is to mature and protect the luminally transiting spermatozoa. Mounting evidence is showing that innate immune components [including Toll-like receptors (TLRs) and antimicrobial proteins, among which are β-defensins] and inflammatory mediators, under the primary influence of androgens, participate in the cellular and molecular processes that define this tissue. Here, we present an overview of the contributions of these signaling pathway components during epididymal homeostasis and discuss the hypotheses as to their involvement in epididymitis, the most common urological inflammatory condition in men, frequently impairing their fertility. Drawing primarily from rodent models, we also focus on how the distribution and functional expression of innate immune components are differentially regulated in the prenatal developing epididymis, providing new insights into the disruption of these signaling pathways throughout the lifespan. Male infertility is caused by a variety of conditions, such as congenital malformations, genetic and endocrine disorders, exposure to environmental toxicants, and inflammatory/infectious conditions. More than one-third of infertile men with an idiopathic condition cannot currently be adequately diagnosed. Thinking about the innate immunity and inflammation context of the epididymis may provide new insights and directions as to how these systems contribute to male fertility, as well as also uncover urological and andrological outcomes that may aid clinicians in diagnosing and preventing epididymal pathologies.
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Affiliation(s)
- M C W Avellar
- Department of Pharmacology, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - C M Ribeiro
- Department of Pharmacology, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - M R Dias-da-Silva
- Department of Medicine, Universidade Federal de São Paulo - Escola Paulista de Medicina, São Paulo, SP, Brazil
| | - E J R Silva
- Department of Pharmacology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Botucatu, SP, Brazil
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Hajihassani A, Ahmadi E, Shirazi A, Shams-Esfandabadi N. Reduced glutathione in the freezing extender improves the in vitro fertility of ram epididymal spermatozoa. Small Rumin Res 2019. [DOI: 10.1016/j.smallrumres.2019.02.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Kolasa-Wołosiuk A, Tarnowski M, Baranowska-Bosiacka I, Chlubek D, Wiszniewska B. Antioxidant enzyme expression of mRNA and protein in the epididymis of finasteride-treated male rat offspring during postnatal development. Arch Med Sci 2019; 15:797-810. [PMID: 31110548 PMCID: PMC6524191 DOI: 10.5114/aoms.2017.68528] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 04/05/2017] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION We verify whether finasteride had a transgenerational effect on the epididymal expression of antioxidant enzymes, and the correlation between these enzymes and blood androgen concentrations in male offspring (F1:Fin) of females fertilized by finasteride-treated male rats. MATERIAL AND METHODS The expression of CAT, SOD1, GPX5, GR on the mRNA and protein levels was evaluated in the epididymis at postnatal day (PND) 7, 14, 21, 28 and 90. Levels of T and DHT were correlated with mRNA levels of enzymes by Spearman's rank correlation coefficient. RESULTS A change in the levels of transcripts was noted in F1:Fin rats: CAT decreased at PND 28 (p < 0.01) and increased at PND 90 (p < 0.01); SOD1 increased at PND 7 (p < 0.0001), 21 (p < 0.001), 90 (p < 0.0001) and decreased at 14 PND (p < 0.01); GPX5 increased at PND 14 and 21 (p < 0.0001); GR decreased at PND 21 and 28 (p < 0.0001). Altered immunolocalization of enzymes within the epididymal epithelium was observed. Negative correlations between GPX5 mRNA with androgens (T, p = 0.0002; DHT, p = 0.0009) were visible in the control rats, and positive correlation between DHT and CAT mRNA (p = 0.03), in opposite to F1:Fin group were was negative for both androgens (T, p = 0.044 and DHT, p = 0.02). CONCLUSIONS Finasteride treatment of adult male rats may cause changes in antioxidant defense system in the epididymis of their offspring, leading to improper ROS concentrations that can affect post-testicular sperm maturation.
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Affiliation(s)
| | - Maciej Tarnowski
- Department of Physiology, Pomeranian Medical University, Szczecin, Poland
| | | | - Dariusz Chlubek
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, Szczecin, Poland
| | - Barbara Wiszniewska
- Department of Histology and Embryology, Pomeranian Medical University, Szczecin, Poland
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Lazzarino G, Listorti I, Bilotta G, Capozzolo T, Amorini AM, Longo S, Caruso G, Lazzarino G, Tavazzi B, Bilotta P. Water- and Fat-Soluble Antioxidants in Human Seminal Plasma and Serum of Fertile Males. Antioxidants (Basel) 2019; 8:E96. [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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Affiliation(s)
- Giacomo Lazzarino
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, Largo F. Vito 1, 00168 Rome, Italy.
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy.
| | - Ilaria Listorti
- Alma Res Fertility Center, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, 00199 Rome, Italy.
| | - Gabriele Bilotta
- Alma Res Fertility Center, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, 00199 Rome, Italy.
| | - Talia Capozzolo
- Alma Res Fertility Center, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, 00199 Rome, Italy.
| | - Angela Maria Amorini
- Department of Biomedical and Biotechnological Sciences, Division of Medical Biochemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
| | - Salvatore Longo
- LTA-Biotech srl, Viale Don Orione, 3D, 95047 Paternò (CT), Italy.
| | - Giuseppe Caruso
- Oasi Research Institute-IRCCS, Via Conte Ruggero, 73, 94018 Troina (EN), Italy.
| | - Giuseppe Lazzarino
- Department of Biomedical and Biotechnological Sciences, Division of Medical Biochemistry, University of Catania, Viale A. Doria 6, 95125 Catania, Italy.
- LTA-Biotech srl, Viale Don Orione, 3D, 95047 Paternò (CT), Italy.
| | - Barbara Tavazzi
- Institute of Biochemistry and Clinical Biochemistry, Catholic University of Rome, Largo F. Vito 1, 00168 Rome, Italy.
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy.
| | - Pasquale Bilotta
- Alma Res Fertility Center, Centro di Fecondazione Assistita Alma Res, Via Parenzo 12, 00199 Rome, Italy.
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Ghanbari H, Keshtgar S, Zare HR, Gharesi-Fard B. Inhibition of CatSper and Hv1 Channels and NOX5 Enzyme Affect Progesterone-Induced Increase of Intracellular Calcium Concentration and ROS Generation in Human Sperm. IRANIAN JOURNAL OF MEDICAL SCIENCES 2019; 44:127-134. [PMID: 30936599 PMCID: PMC6423429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Normal sperm function depends on appropriate intracellular calcium (Cai 2+) and reactive oxygen species (ROS) levels. Calcium activates NADPH oxidase-5 (NOX5) that leads to ROS generation. The calcium channel of sperm (CatSper) is activated by progesterone and intracellular alkalization. Herein, the interactive role of CatSper, Hv1 channels, and NOX5 enzyme on Cai 2+ and ROS generation in human sperm is investigated. METHODS The present laboratory in vitro study was carried out in the School of Medicine, Shiraz University of Medical Sciences (Shiraz, Iran) during 2016. Normal semen samples (n=15) were washed and diluted to 20×106 sperm/mL. The diluted samples were divided into 16 groups containing Ham's F-10 (the control group), 2 µM NNC (CatSper inhibitor), 1 mM ZnCl2 (Hv1 inhibitor), 1 µM DPI (NOX5 inhibitor), NNC+Zn, NNC+DPI, and NNC+Zn+DPI. The other 8 groups were the same as the above except that they contained 1 µM progesterone. Cell viability and Cai 2+ were analyzed by flou-3 AM probe and PI staining, respectively, using flow cytometric method. ROS generation was assessed by chemiluminescence method. Statistical analysis was performed using the one-way ANOVA followed by Tukey's test. P values <0.05 were considered statistically significant. RESULTS Progesterone increased Cai 2+ and ROS generation. The addition of NNC, Zn, or NNC+Zn significantly decreased Cai 2+ in the control and progesterone containing groups. Progesterone-induced ROS generation was decreased significantly in all groups containing NNC, Zn, or DPI and reached to the control level when DPI was added to NNC or Zn. CONCLUSION There is a functional relationship between CatSper and Hv1 channels in increasing Cai 2++. The activity of CatSper and Hv1 channels are required for progesterone-induced ROS generation by NOX5 enzyme.
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Affiliation(s)
- Hamideh Ghanbari
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran;
| | - Sara Keshtgar
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran;
| | - Hamid Reza Zare
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran;
| | - Behrouz Gharesi-Fard
- Department of Immunology, Infertility Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Sánchez-Rubio F, Fernández-Santos MR, Castro-Vázquez L, García-Álvarez O, Maroto-Morales A, Soler AJ, Martínez-Pastor F, Garde JJ. Cinnamtannin B-1, a novel antioxidant for sperm in red deer. Anim Reprod Sci 2018; 195:44-52. [PMID: 29776697 DOI: 10.1016/j.anireprosci.2018.05.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 04/19/2018] [Accepted: 05/03/2018] [Indexed: 01/14/2023]
Abstract
Cinnamtannin B-1 (CNB-1) is a naturally occurring trimeric A-type proanthocyanidin contained in several plants such as cinnamon (Cinnamomum zeylanicum). It is considered to be a potent antioxidant. The protective effect of CNB-1 against oxidative stress was assessed in red deer epididymal sperm incubated at 37 °C. Cryopreserved sperm from six stags were thawed, pooled and extended to 400 × 106 sperm/ml in BGM (bovine gamete medium). After being aliquoted, the samples were supplemented with different concentrations of CNB-1 (0, 0.1, 1, 10 and 100 μg/mL), with or without induced oxidative stress (100 μM Fe2+/ascorbate). The samples were evaluated after 0, 2 and 4 h of incubation at 37 °C. This experiment was replicated six times. Spermmotility (CASA), viability, mitochondrial membrane potential, acrosomal status, lipoperoxidation (C11 BODIPY 581/591), intracellular reactive oxygen species (ROS) production and DNA status (TUNEL) were assessed. After 4 h of incubation, CNB-1 prevented the deleterious effects of oxidative stress, thus improved sperm progressivity and velocity (P<0.05). Furthermore, 1 and 10 μM CNB-1 improved sperm linearity, even when compared to those samples that had not been subjected to oxidative stress (P<0.05). The greatest concentration, 100 μM, prevented sperm lipoperoxidation and reduced ROS production in samples subjected to oxidative stress.
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Affiliation(s)
- F Sánchez-Rubio
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Servicio de Farmacia. Complejo Hospitalario Universitario de Albacete. GAI. Albacete, Spain
| | - M R Fernández-Santos
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain; Faculty of Pharmacy (UCLM), Albacete, Spain.
| | | | - O García-Álvarez
- Biomedical Center, Medical Faculty in Pilsen, Pilsen, Czech Republic
| | | | - A J Soler
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
| | - F Martínez-Pastor
- Department of Molecular Biology (Cell Biology) and Institute for Animal Health and Cattle Development (INDEGSAL), University of León, León, Spain
| | - J J Garde
- SaBio IREC (CSIC - UCLM - JCCM), Albacete, Spain
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de Andrade AFC, Arruda RP, Torres MA, Pieri NCG, Leite TG, Celeghini ECC, Oliveira LZ, Gardés TP, Bussiere MCC, Silva DF. Nitric oxide in frozen-thawed equine sperm: Effects on motility, membrane integrity and sperm capacitation. Anim Reprod Sci 2018; 195:176-184. [PMID: 29861341 DOI: 10.1016/j.anireprosci.2018.05.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 05/20/2018] [Accepted: 05/22/2018] [Indexed: 01/27/2023]
Abstract
Nitric oxide (NO) is a reactive nitrogen species (RSN) that, over the years, has been shown to be integrated with biological and physiological events, including reproductive processes. NO can affect the functionality of spermatozoa through free radical scavenging, deactivating and inhibiting the production of superoxide anions (O2.-). However, the role of NO in mammalian spermatozoa physiology seems paradoxical. The aim of this study was to investigate the effects of NO on motility, hyperactivation, membrane integrity, peroxidation, and capacitation in cryopreserved equine sperm. Ejaculates were collected and cryopreserved. After thawing, samples were centrifuged, suspended in an in vitro fertilization (IVF) medium and incubated with the following treatments: 1) C = control (IVF); 2) A = l-arginine (10 mM - In); 3) L = L-NAME (1 mM - Ih); 4) M = methylene blue (100 mM - Re); 5) AL = L-arginine + L-NAME (In + Ih); 6) AM = L-arginine + methylene blue (In + Re). The samples were evaluated for spermatic kinetics by CASA and other analyses [plasma and acrosomal membranes used the propidium iodide (PI) and Pisum sativum agglutinin (PSA), detection of tyrosine residues phosphorylation in the membrane (F0426), nitric oxide (DAF-2/DA), lipid peroxidation (C11-BODIPY581/591)] by flow cytometry. The l-arginine treatments reduced MOT, PROG, RAP and LIN only at time 0 min compared to the control and L-NAME. These treatments (MT and MP, VAP, VSL, LIN, RAP) also reduced the sperm movement characteristics but only at the beginning of the incubation period. After this period of incubation, motility recovered. NO removal by methylene blue almost completely inhibited sperm motility, but these treatments had the highest percentages of intact membranes. l-arginine treatments improved acrosome reactions and differed from M and AM. NO production, tyrosine phosphorylation and lipid peroxidation did not differ among treatments, except for M and AM, where a reduction in these variables was detected. Therefore, equine sperm capacitation and the acrosome reaction are part of an oxidative process that involves the participation of ROS, and NO plays an important role in the maintenance and regulation of motility, hyperactivation, induction of acrosome reaction and possibly in capacitation, which are indispensable processes for the fertility of equine sperm.
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Affiliation(s)
- André F C de Andrade
- Laboratory of Andrology and Technology of Swine Embryos, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil.
| | - Rubens P Arruda
- Laboratory of Semen Biotechnology and Andrology, Department of Animal Reproduction,School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Mariana A Torres
- Laboratory of Andrology and Technology of Swine Embryos, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Naira C G Pieri
- Laboratory of Andrology and Technology of Swine Embryos, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Ticiano G Leite
- Laboratory of Semen Biotechnology and Andrology, Department of Animal Reproduction,School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Eneiva Carla C Celeghini
- Laboratory of Teaching and Research in Pathology of Reproduction, Department of Animal Reproduction,School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Leticia Z Oliveira
- Department of Animal Pathology and Clinic, School of Veterinary Medicine, Federal Fluminense University, Niterói, RJ, Brazil
| | - Thayna P Gardés
- Laboratory of Semen Biotechnology and Andrology, Department of Animal Reproduction,School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
| | - Maria Clara C Bussiere
- Laboratory of Animal Reproduction and Genetics, Norte Fluminense University, Campus dos Goytacazes, RJ, Brazil
| | - Daniela F Silva
- Laboratory of Semen Biotechnology and Andrology, Department of Animal Reproduction,School of Veterinary Medicine and Animal Science, University of São Paulo (USP), Pirassununga, SP, Brazil
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Ghanbari H, Keshtgar S, Kazeroni M. Inhibition of the CatSper Channel and NOX5 Enzyme Activity Affects the Functions of the Progesterone-Stimulated Human Sperm. IRANIAN JOURNAL OF MEDICAL SCIENCES 2018; 43:18-25. [PMID: 29398748 PMCID: PMC5775990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Low levels of reactive oxygen species (ROS) and calcium are necessary for sperm function. NADPH oxidase 5 (NOX5) is a membrane enzyme which produces ROS. This enzyme is dependent on calcium for its activity. We investigated the importance of NOX5 and an important calcium channel (CatSper) on sperm function. METHODS This laboratory in-vitro study was done in Shiraz, Iran, 2016. Normal semen samples (n=24) were washed and diluted to 20×106 sperm/mL. The diluted samples were divided into 8 groups, containing Ham's F-10 (control group), 2 µM of NNC (CatSper channel inhibitor), 1 µM DPI (NOX5 inhibitor), and NNC+DPI. The other 4 groups were the same as the 1st ones, except that they contained 1 µM of progesterone. Motility assessment was done by VT-Sperm 3.1. Acrosome status was monitored with acrosome-specific FITC-PSA using fluorescent microscopy. Sperm viability was assessed by Eosin Y. Statistical analysis was performed using SPSS 16 software. The comparison between the groups was done using the one-way ANOVA, followed by Tukey. A P<0.05 was considered significant. RESULTS The percentage of motile sperm, sperm velocity, and viability decreased significantly in the groups containing NNC. DPI reduced sperm progressive motility only in the progesterone-stimulated condition. Progesterone induced acrosome reaction, but this effect was inhibited by NNC and DPI. CONCLUSION CatSper had a prominent role in the motility, acrosome reaction, and viability of the human sperm. The function of NOX5 was important only in the stimulated sperm. We conclude that CatSper has a more prominent role than NOX5 activity. The functional relation between NOX5 and CatSper is not clear but is very probable.
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Affiliation(s)
- Hamideh Ghanbari
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Sara Keshtgar
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran,Correspondence: Sara Keshtgar, PhD; Department of Physiology, School of Medicine, Zand Blvd., Postal Code: 71348-45794, Shiraz, Iran Tel/Fax: +98 71 32302026
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El-Gindy Y, Zeweil H. Effects of parsley supplementation on the seminal quality, blood lipid profile and oxidant status of young and old male rabbits. WORLD RABBIT SCIENCE 2017. [DOI: 10.4995/wrs.2017.6532] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
<p>The high unsaturation levels of spermatozoal membrane make it very susceptible to oxidative damage and this problem increases with advancing age. In this study, the aim is to investigate whether parsley seed (PS) has a protective effect on semen quality, serum lipid profile and antioxidative status of old and young bucks. Male rabbits (n= 36) (18 young 9-12 mo old and 18 old 36-42 mo old) were each assigned to 3 dietary treatments (a control and 2 levels of PS: 0.3 and 0.6 kg/100 kg diet) to evaluate the ability of parsley to enhance bucks’ reproductive status. Most of the studied traits were adversely affected by age of rabbit bucks. On the other hand, the inclusion of PS significantly boosted ejaculate volume and improved mass motility concentration and total sperm output. Seminal plasma and blood serum total antioxidant capacity increased, while serum lipid peroxidase decreased with parsley treatments. In conclusion, dietary supplementation of parsley seed alleviates most semen quality parameters and counteracts oxidative stress, especially with the advance of age (seminal plasma and blood serum of total antioxidant capacity and malondialdehyde.</p>
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Fallahzadeh AR, Rezaei Z, Rahimi HR, Barmak MJ, Sadeghi H, Mehrabi S, Rabani SM, Kashani IR, Barati V, Mahmoudi R. Evaluation of the Effect of Pentoxifylline on Cisplatin-Induced Testicular Toxicity in Rats. Toxicol Res 2017; 33:255-263. [PMID: 28744357 PMCID: PMC5523557 DOI: 10.5487/tr.2017.33.3.255] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/26/2017] [Accepted: 02/09/2017] [Indexed: 11/20/2022] Open
Abstract
Chemotherapy is associated with male infertility. Cisplatin (cis-diamminedichloro-platinum (II) (CDDP) as a chemotherapy medication used to treat a number of cancers has been reported to most likely induce testicular toxicity. Administration of antioxidants, such as pentoxifylline (PTX) may reduce some Adverse Drug Reactions (ADRs) of CDDP. Therefore, this study investigated the potentially protective effects of PTX on CDDP-induced testicular toxicity in adult male rats. For this purpose, 42 male rats were randomly divided into 7 groups. The rats were orally pretreated with PTX at the 3 doses of 75, 150, and 300 mg/kg once a day for 14 successive days. On the 14th day of the study, they were intraperitoneally (IP) administered with a single dose of CDDP (7 mg/kg). Finally, the sperm/testis parameters, serum levels of reproductive hormones, including testosterone, Luteinizing Hormone (LH), and Follicle Stimulating Hormone (FSH) as the pivotal endocrine factors controlling testicular functions, and histopathological changes of testis tissue were examined. Pretreatment with the two doses of 75 and 150 mg/kg PTX indicated significant increases in the sperm count and motility induced by CDDP administration. The right and significantly left testis weights were decreased following the treatment with 300 mg/kg of PTX plus CDDP. However, 75 mg/kg of PTX plus CDDP showed the best near-to-normal histopathological features. The results demonstrated that PTX alone enhanced some parameters, such as the sperm count, while reducing other parameters, including sperm fast motility and germ layer thickness. Furthermore, despite testosterone or LH levels, the mean serum FSH level was significantly augmented by the doses of 75 and 150 mg/kg. It was concluded that PTX administration cannot reduce CDDP-induced testicular toxicity even at high doses (e.g., 300 mg/kg), while it seemed to partially intensify CDDP toxicity effects at a dose of 75 mg/kg. Thus, further research is required in this regard.
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Affiliation(s)
- Ali Reza Fallahzadeh
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Zohreh Rezaei
- Student Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Hamid Reza Rahimi
- Pharmaceutics Research Center, Institute of Neuropharmacology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran.,Department of Toxicology and Pharmacology, Faculty of Pharmacy, Kerman University of Medical Sciences, Kerman, Iran
| | - Mehrazd Jafari Barmak
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Hossein Sadeghi
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Sadrollah Mehrabi
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
| | | | - Iraj Ragerdi Kashani
- Department of Anatomical Sciences, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahid Barati
- Student Research Committee, Yasuj University of Medical Sciences, Yasuj, Iran
| | - Reza Mahmoudi
- Cellular and Molecular Research Center, Yasuj University of Medical Sciences, Yasuj, Iran
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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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Melatonin Scavenger Properties against Oxidative and Nitrosative Stress: Impact on Gamete Handling and In Vitro Embryo Production in Humans and Other Mammals. Int J Mol Sci 2017; 18:ijms18061119. [PMID: 28613231 PMCID: PMC5485943 DOI: 10.3390/ijms18061119] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 05/19/2017] [Accepted: 05/21/2017] [Indexed: 11/17/2022] Open
Abstract
Oxidative and nitrosative stress are common problems when handling gametes in vitro. In vitro development in mammalian embryos is highly affected by culture conditions, especially by reactive oxygen species (ROS) and reactive nitrogen species (RNS), because their absence or overproduction causes embryo arrest and changes in gene expression. Melatonin in gamete co-incubation during in vitro fertilization (IVF) has deleterious or positive effects, depending on the concentration used in the culture medium, demonstrating the delicate balance between antioxidant and pro-oxidant activity. Further research is needed to better understand the possible impact of melatonin on the different IVP steps in humans and other mammals, especially in seasonal breeds where this neuro-hormone system highly regulates its reproduction physiology.
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Souza HM, Arruda LC, Monteiro MM, Nery IH, Araújo Silva RA, Batista AM, Guerra MMP. The Effect of Canthaxanthin on the Quality of Frozen Ram Spermatozoa. Biopreserv Biobank 2017; 15:220-227. [DOI: 10.1089/bio.2016.0049] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Helder M. Souza
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Lúcia C.P. Arruda
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Millena M. Monteiro
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Igor H.A.V. Nery
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Robespierre A.J. Araújo Silva
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - André M. Batista
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
| | - Maria Madalena Pessoa Guerra
- Andrology Laboratory (ANDROLAB), Veterinary Medicine Department, Universidade Federal Rural de Pernambuco (UFRPE), Recife, Brazil
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Asadi N, Bahmani M, Kheradmand A, Rafieian-Kopaei M. The Impact of Oxidative Stress on Testicular Function and the Role of Antioxidants in Improving it: A Review. J Clin Diagn Res 2017; 11:IE01-IE05. [PMID: 28658802 DOI: 10.7860/jcdr/2017/23927.9886] [Citation(s) in RCA: 110] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2016] [Accepted: 10/25/2016] [Indexed: 01/10/2023]
Abstract
Oxidative stress is an important factor for development of male infertility because of very high rate of cell division and mitochondrial oxygen consumption in testicular tissue as well as comparably higher levels of unsaturated fatty acids in this tissue than in other tissues. Moreover, the level of oxygen pressure is low due to the weakness of testicular artery; therefore, there is a severe cell competition for oxygen. Therefore, the testicular tissue and male reproductive system are particularly susceptible to oxidative stress. On the other hand, exposure to X-ray, toxins and chemicals found in the environment as well as specific physical conditions such as varicocele can exacerbate the oxidative stress and induce apoptosis of germ cells and subsequently spermatogenesis. However, under normal conditions, the body's capacity to produce antioxidants for inhibiting adverse effects of oxidative stress is affected by metabolic process and genetic structure. Besides that, environmental factors such as diet, pollutants, and chemicals can affect this capacity. Thus, the body's antioxidant system alone is not able to neutralize all free radicals and prevent harmful complications of oxidative stress. Therefore, use of antioxidants and development of antioxidant therapy can break down the oxidative chain reaction and play a very significant role in increasing the body's capacity to fight free radical-induced oxidative stress, and therefore improve the process of spermatogenesis.
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Affiliation(s)
- Nematollah Asadi
- Student Research Committee of Razi Herbal Medicines Research Center, Lorestan University of Medical Sciences, Khorramabad, Iran: Biotechnology laboratory of ASRI, Karaj, Iran
| | - Mahmoud Bahmani
- Leishmaniasis Research Center, Ilam University of Medical Sciences, Ilam, Iran
| | - Arash Kheradmand
- Razi Herbal Medicines Research center, Lorestan University of Medical Sciences, Khorramabad, Iran
| | - Mahmoud Rafieian-Kopaei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Soriano-Úbeda C, García-Vázquez FA, Romero-Aguirregomezcorta J, Matás C. Improving porcine in vitro fertilization output by simulating the oviductal environment. Sci Rep 2017. [PMCID: PMC5356470 DOI: 10.1038/srep43616] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Differences between the in vitro and in vivo environment in which fertilization occurs seem to play a key role in the low efficiency of porcine in vitro fertilization (IVF). This work proposes an IVF system based on the in vivo oviductal periovulatory environment. The combined use of an IVF medium at the pH found in the oviduct in the periovulatory stage (pHe 8.0), a mixture of oviductal components (cumulus-oocyte complex secretions, follicular fluid and oviductal periovulatory fluid, OFCM) and a device that interposes a physical barrier between gametes (an inverted screw cap of a Falcon tube, S) was compared with the classical system at pHe 7.4, in a 4-well multidish (W) lacking oviduct biological components. The results showed that the new IVF system reduced polyspermy and increased the final efficiency by more than 48%. This higher efficiency seems to be a direct consequence of a reduced sperm motility and lower capacitating status and it could be related to the action of OFCM components over gametes and to the increase in the sperm intracellular pH (pHi) caused by the higher pHe used. In conclusion, a medium at pH 8.0 supplemented with OFCM reduces polyspermy and improves porcine IVF output.
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Ferré LB, Bogliotti Y, Chitwood JL, Fresno C, Ortega HH, Kjelland ME, Ross PJ. Effect of spermatozoa motility hyperactivation factors and gamete coincubation duration on in vitro bovine embryo development using flow cytometrically sorted spermatozoa. Reprod Fertil Dev 2017; 29:805-814. [DOI: 10.1071/rd15289] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 12/01/2015] [Indexed: 12/26/2022] Open
Abstract
The aim of the present study was to evaluate the effects of sperm motility enhancers and different IVF times on cleavage, polyspermy, blastocyst formation, embryo quality and hatching ability. In Experiment 1, sex-sorted X chromosome-bearing Bos taurus spermatozoa were incubated for 30 min before 18 h fertilisation with hyperactivating factors, namely 10 mM caffeine (CA), 5 mM theophylline (TH), 10 mM caffeine and 5 mM theophylline (CA + TH); and untreated spermatozoa (control). In Experiment 2, matured B. taurus oocytes were fertilised using a short (8 h) or standard (18 h) fertilisation length, comparing two different fertilisation media, namely synthetic oviducal fluid (SOF) fertilisation medium (SOF-FERT) and M199 fertilisation medium (M199-FERT). Cleavage and blastocyst formation rates were significantly higher in the CA + TH group (77% and 27%, respectively) compared with the control group (71% and 21%, respectively). Cleavage rates and blastocyst formation were significantly lower for the shortest fertilisation time (8 h) in M199-FERT medium (42% and 12%, respectively). The SOF-FERT medium with an 8 h fertilisation time resulted in the highest cleavage rates and blastocyst formation (74% and 29%, respectively). The SOF-FERT medium produced the highest embryo quality (50% Grade 1) and hatching rate (66%). Motility enhancers did not affect polyspermy rates, whereas polyspermy was affected when fertilisation length was extended from 8 h (3%) to 18 h (9%) and in M199-FERT (14%) compared with SOF-FERT (6%). We conclude that adding the motility enhancers CA and TH to sex sorted spermatozoa and Tyrode’s albumin lactate pyruvate (TALP)-Sperm can improve cleavage and embryo development rates without increasing polyspermy. In addition, shortening the oocyte–sperm coincubation time (8 h) resulted in similar overall embryo performance rates compared with the prolonged (18 h) interval.
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Keshtgar S, Iravanpour F, Gharesi-Fard B, Kazerooni M. Combined Effect of Trolox and EDTA on Frozen-Thawed Sperm Quality. IRANIAN JOURNAL OF MEDICAL SCIENCES 2016; 41:230-7. [PMID: 27217608 PMCID: PMC4876302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 10/29/2022]
Abstract
The freezing and thawing process not only is associated with serious damage to sperm such as damage to the plasma membrane and the acrosomal membrane but also changes the membrane permeability to some ions including calcium. Also, the generation of oxygen free radicals is increased during the freezing-thawing process. The purpose of this study was to evaluate of the effects of Trolox as an antioxidant and edetic acid (EDTA) as a calcium chelator on frozen-thawed (FT) sperm and compare these effects with those on fresh sperm. This study was done on these men of 25 healthy men, who referred to Shiraz Infertility Centerbetween2012 and2013. Normal samples were transferred to the ReproductivePhysiology Laboratory, Department of Physiology, Shiraz University of Medical Sciences, Shiraz. The samples were divided into two groups randomly: fresh and FT sperm groups. Each group was divided into five subgroups: control group, the solvent group (0.1%dimethyl sulfoxide [DMSO]), Trolox group (200μM), EDTA group (1.1mM), and Trolox+EDTA group. The percentages of motility, viability, and acrosome-reacted sperm were tested. The percentages of motility and viability in the FT sperm were lower than those in the fresh sperm. The progressive motility of the FT sperm was improved nonsignificantly with Trolox+EDTA. However, the effect of Trolox+EDTA on the progressive motility of the FT sperm was much more than that on the fresh sperm. The fewest acrosome-reacted sperm were observed in the EDTA-containingFT sperm. Antioxidant supplementation or omission of extracellular calcium may partly improve motility and also reduce acrosomal damage in FT sperm.
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Affiliation(s)
- Sara Keshtgar
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran,Correspondence: Sara Keshtgar, PhD; Department of Physiology, School of Medicine, Zand St, Postal code: 71348-45794, Shiraz, Iran Tel/Fax: +98 71 32302026
| | - Farideh Iravanpour
- Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Behrooz Gharesi-Fard
- Department of Immunology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran,Infertility Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Kutluyer F, Benzer F, Erişir M, Öğretmen F, İnanan BE. The in vitro effect of cypermethrin on quality and oxidative stress indices of rainbow trout Oncorhynchus mykiss spermatozoa. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2016; 128:63-67. [PMID: 26969441 DOI: 10.1016/j.pestbp.2015.10.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2015] [Revised: 10/03/2015] [Accepted: 10/05/2015] [Indexed: 06/05/2023]
Abstract
There is limited information on the scientific literature about the effect of in vitro exposure of fish sperm to pesticides. In vitro effect of cypermethrin on sperm quality and oxidative stress has not yet been fully investigated. Therefore, the effects of cypermethrin, a type II pyrethroid insecticide, on quality and oxidative stress of spermatozoa were examined in vitro. To explore the potential in vitro toxicity of cypermethrin, fish spermatozoa were incubated with different concentrations of cypermethrin (1.025, 2.05 and 4.1 μg/l) for 2 h. The motility rate and duration of sperm were determined after exposure to cypermethrin. Reduced glutathione (GSH), glutathione peroxidase (GSH-Px), catalase (CAT) and malondialdehyde (MDA) in spermatozoa were analyzed for determination of oxidant and antioxidant balance. Our results indicated that spermatozoa motility and duration significantly decreased with exposure to cypermethrin. Additionally, activity of GSH-Px (P<0.05) and MDA and GSH levels increased in a concentration-dependent manner while CAT activity decreased (P<0.05). Consequently, the oxidant and antioxidant status and sperm quality were affected by quantitative changes and different concentrations of cypermethrin.
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Affiliation(s)
- Filiz Kutluyer
- Tunceli University, Fisheries Faculty, 62000, Tunceli, Turkey.
| | - Fulya Benzer
- Tunceli University, Faculty of Engineering, Department of Food Engineering, 62000, Tunceli, Turkey
| | - Mine Erişir
- Fırat University, Faculty of Veterinary, Department of Basic Sciences, Elazığ, Turkey
| | - Fatih Öğretmen
- Muğla Sıtkı Koçman University, Faculty of Science, Department of Bology, 48000, Muğla, Turkey
| | - Burak Evren İnanan
- Muğla Sıtkı Koçman University, Faculty of Science, Department of Bology, 48000, Muğla, Turkey
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Reactive oxygen species production and antioxidant enzyme activity during epididymal sperm maturation in Corynorhinus mexicanus bats. Reprod Biol 2016; 16:78-86. [DOI: 10.1016/j.repbio.2016.01.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2015] [Revised: 01/08/2016] [Accepted: 01/10/2016] [Indexed: 11/23/2022]
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41
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Zhang XG, Liu Q, Wang LQ, Yang GS, Hu JH. Effects of glutathione on sperm quality during liquid storage in boars. Anim Sci J 2016; 87:1195-1201. [DOI: 10.1111/asj.12545] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Revised: 08/15/2015] [Accepted: 08/19/2015] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Gang Zhang
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi P.R. China
| | - Qi. Liu
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi P.R. China
| | - Li-Qiang Wang
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi P.R. China
| | - Gong-She Yang
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi P.R. China
| | - Jian-Hong Hu
- College of Animal Science and Technology; Northwest A&F University; Yangling Shaanxi P.R. China
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Rodríguez-Gil JE, Bonet S. Current knowledge on boar sperm metabolism: Comparison with other mammalian species. Theriogenology 2016; 85:4-11. [DOI: 10.1016/j.theriogenology.2015.05.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/06/2015] [Accepted: 05/06/2015] [Indexed: 11/28/2022]
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Kutluyer F, Erişir M, Benzer F, Öğretmen F, İnanan BE. The in vitro effect of Lambda-cyhalothrin on quality and antioxidant responses of rainbow trout Oncorhynchus mykiss spermatozoa. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2015; 40:855-860. [PMID: 26476887 DOI: 10.1016/j.etap.2015.09.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Revised: 09/22/2015] [Accepted: 09/26/2015] [Indexed: 06/05/2023]
Abstract
There is little information in the scientific literature about effect of in vitro exposure of fish spermatozoa to pesticides. In vitro effect of Lambda-cyhalothrin (LCT) on sperm quality and oxidative stress has not been fully explored yet. The effects of LCT, which is a synthetic pyrethroid insecticide, on quality and oxidative stress of spermatozoa were investigated in vitro due to extensively use to control a wide range of insect pests in agriculture, public health, and homes and gardens. To explore the potential in vitro toxicity of LCT, fish spermatozoa were incubated with different concentrations of LCT (0.6, 1.2 and 2.4 μg/L) for 2h. Reduced glutathione (GSH), glutathione peroxidase (GSH-Px), catalase (CAT) and malondialdehyde (MDA) in spermatozoa were analyzed for determination of oxidant and antioxidant balance. Our results indicated that the percentage and duration of sperm motility significantly decreased with exposure to LCT. Activity of GSH-Px and MDA (P<0.05) and GSH levels (P<0.05) increased in a concentration-dependent manner while CAT activity decreased (P<0.05). In conclusion, the oxidant and antioxidant status and sperm quality were affected by increasing concentrations of LCT.
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Affiliation(s)
- Filiz Kutluyer
- Tunceli University, Fisheries Faculty, 62000 Tunceli, Turkey.
| | - Mine Erişir
- Tunceli University, Faculty of Engineering, Department of Food Engineering, 62000 Tunceli, Turkey
| | - Fulya Benzer
- Fırat University, Faculty of Veterinary, Department of Basic Sciences, Elazığ, Turkey
| | - Fatih Öğretmen
- Muğla Sıtkı Koçman University, Faculty of Science, Department of Biology, 48000 Muğla, Turkey
| | - Burak Evren İnanan
- Muğla Sıtkı Koçman University, Faculty of Science, Department of Biology, 48000 Muğla, Turkey
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Anel-López L, Garcia-Alvarez O, Maroto-Morales A, Iniesta-Cuerda M, Ramón M, Soler AJ, Fernández-Santos MR, Garde JJ. Reduced glutathione addition improves both the kinematics and physiological quality of post-thawed red deer sperm. Anim Reprod Sci 2015; 162:73-9. [PMID: 26474690 DOI: 10.1016/j.anireprosci.2015.09.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Revised: 09/22/2015] [Accepted: 09/25/2015] [Indexed: 10/23/2022]
Abstract
The potential protective effect of reduced glutathione (GSH) and trolox (TRX), an analogue of vitamin E, supplementation during in vitro culture (2h, 39°C) of electroejaculated frozen/thawed red deer sperm was investigated. Cryopreserved sperm were thawed and incubated with no additive (Control) and 1mM or 5mM of each antioxidant to find out whether these supplementations can maintain the sperm quality, considering the use of thawed samples for in vitro techniques such as in vitro fertilisation (IVF), sperm sex sorting or refreezing. The effect of GSH on sperm motility was positive compared to TRX which was negative (P<0.001). After 2h of incubation at 39°C, use of GSH improved motility while TRX supplementation reduced sperm motility compared with Control samples without antioxidant. Use of TRX at both concentrations (1 and 5mM; TRX1 and TRX5) resulted in lesser percentages of apoptotic sperm (12.4±1.1% and 11.7±0.9%) than GSH1, GSH5 (15.2±1% and 14.6±1.1%) and Control samples (16.9±1.2%) (P<0.001). Use of GSH at both concentrations (1 and 5mM) resulted in greater mitochondrial activity as compared with findings for the Control, TRX1 and TRX5 groups. Results of this study indicate that GSH is a suitable supplement for electroejaculated red deer sperm. It would be necessary to conduct fertility trials (in vivo and in vitro), to assess whether GSH supplementation of thawed red deer sperm could improve fertility rates.
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Affiliation(s)
- L Anel-López
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s.n., 02071 Albacete, Spain
| | - O Garcia-Alvarez
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s.n., 02071 Albacete, Spain
| | - A Maroto-Morales
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s.n., 02071 Albacete, Spain
| | - M Iniesta-Cuerda
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s.n., 02071 Albacete, Spain
| | | | - A J Soler
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s.n., 02071 Albacete, Spain
| | | | - J J Garde
- SaBio IREC (CSIC-UCLM-JCCM), Campus Universitario s.n., 02071 Albacete, Spain.
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Effect of ethanol induced mild stress on post-thawed bull sperm quality. Cryobiology 2015; 71:12-7. [PMID: 26111883 DOI: 10.1016/j.cryobiol.2015.06.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2015] [Revised: 06/19/2015] [Accepted: 06/22/2015] [Indexed: 11/23/2022]
Abstract
This study was performed to investigate the effect of sub-lethal exposure of bull semen to ethanol on the post-thaw spermatozoa quality. Semen samples (n=24, 6 ejaculates/bull) from 4 Holstein bulls were collected and pooled. Pooled samples were divided into 4 equal parts and each part was frozen after being diluted with Optidyl® extender containing 0 (O-E0), 0.03 (O-E3), 0.09 (O-E9) and 0.15 (O-E15) % (v/v) absolute ethanol. Sperm motility and velocity, plasma membrane integrity and functionality, mitochondrial activity, malondialdehyde concentration, and apoptosis status were evaluated after thawing. A higher percentage of total motility was observed in the O-E9 group as compared to the O-E0, O-E3 and O-E15 groups (p<0.05). Also, plasma membrane integrity was higher (p<0.05) in the O-E9 group compared to the O-E3, and O-E15 groups. However, the difference between the O-E9 and O-E0 groups was not significant (p>0.05). In terms of the proportion of sperm abnormality and plasma membrane functionality no differences (p>0.05) were observed between the groups. Our results revealed that malondialdehyde level was lower in ethanol treated (O-E3, O-E9 and O-E15) groups compared to the O-E0 group (p<0.05). Furthermore, the percentage of live spermatozoa with active mitochondria was higher in the O-E9 and O-E15 groups compared to the O-E0 and O-E3 groups (p<0.05). The O-E3 and O-E9 groups resulted in the highest and lowest percentage of apoptotic spermatozoa, respectively (p<0.05). The results of this study demonstrate that supplementation of semen extender with sub-lethal concentration of ethanol influences post-thawed bull sperm quality in a dose dependent manner.
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Liquid storage of equine semen: Assessing the effect of d-penicillamine on longevity of ejaculated and epididymal stallion sperm. Anim Reprod Sci 2015; 159:155-62. [PMID: 26130601 DOI: 10.1016/j.anireprosci.2015.06.011] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 06/12/2015] [Accepted: 06/13/2015] [Indexed: 11/20/2022]
Abstract
Short-term storage of equine sperm at 5°C in an extender containing milk and/or egg yolk components is common practice in the equine breeding industry. Sperm motility, viability, DNA integrity and, consequently, fertilizing ability decline over time, partly due to reactive oxygen species (ROS) generation. We investigated whether adding the anti-oxidant d-penicillamine to a commercial milk/egg yolk extender delayed the decrease in semen quality. Semen was recovered on four consecutive days from eight 3-year old Warmblood stallions. On day 5, seven of the stallions were castrated and sperm recovered from the caudae epididymides. Ejaculated samples were split, and one portion was centrifuged and re-suspended to reduce seminal plasma content. All samples were diluted to 50millionsperm/ml and divided into two portions, one of which was supplemented with 0.5mM d-penicillamine. After 48h, 96h, 144h and 192h storage, sperm motility was assessed by computer-assisted semen analysis (CASA), viability by SYBR14/PI staining, and DNA integrity using the sperm chromatin structure assay (SCSA). d-Penicillamine had no effect on motility of ejaculated sperm (P>0.05) but reduced total and progressive motility of epididymal sperm. Sperm chromatin integrity was not influenced by storage time, seminal plasma or d-penicillamine. In short, adding d-penicillamine to a commercial semen extender was neither beneficial nor detrimental to the maintenance of quality in ejaculated semen stored at 5°C. The negative effect on motility of epididymal sperm may reflect differences in (membrane) physiology of spermatozoa that have not been exposed to seminal plasma.
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Firman RC, Young FJ, Rowe DC, Duong HT, Gasparini C. Sexual rest and post-meiotic sperm ageing in house mice. J Evol Biol 2015; 28:1373-82. [PMID: 26012513 DOI: 10.1111/jeb.12661] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 05/17/2015] [Accepted: 05/20/2015] [Indexed: 02/04/2023]
Abstract
Fertilization by aged sperm can result in adverse fitness consequences for both males and females. Sperm storage during male sexual rest could provide an environment for post-meiotic sperm senescence causing a deterioration in the quality of stored sperm, possibly impacting on both sperm performance (e.g. swimming ability) and DNA quality. Here, we compared the proportion of sperm with fragmented DNA, an indicator of structural damage of DNA within the sperm cell, among males that had been sexually rested for approximately 2 months, to that of males that had mated recently. We found no evidence of intra-epididymal sperm DNA damage or any impairment in sperm performance, and consequently no evidence of post-meiotic sperm senescence. Our results suggest that male house mice are likely to possess mechanisms that function to ensure that their sperm reserves remain stocked with 'young', viable sperm during periods of sexual inactivity. We also discuss the possibility that our experimental design leads to no difference in the age of sperm among males from the two mating treatments. Post-meiotic sperm senescence is especially relevant under sperm competition. Thus, we sourced mice from populations that differed in their levels of post-copulatory sexual selection, enabling us to gain insight into how selection for higher sperm production influences the rate of sperm ageing and levels of DNA fragmentation. We found that males from the population that produced the highest number of sperm also had the smallest proportion of DNA-fragmented sperm and discuss this outcome in relation to selection acting upon males to ensure that they produce ejaculates with high-quality sperm that are successful in achieving fertilizations under competitive conditions.
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Affiliation(s)
- R C Firman
- Centre for Evolutionary Biology, School of Animal Biology, University of Western Australia, Crawley, WA, Australia
| | - F J Young
- Centre for Evolutionary Biology, School of Animal Biology, University of Western Australia, Crawley, WA, Australia
| | - D C Rowe
- Centre for Evolutionary Biology, School of Animal Biology, University of Western Australia, Crawley, WA, Australia
| | - H T Duong
- Centre for Evolutionary Biology, School of Animal Biology, University of Western Australia, Crawley, WA, Australia
| | - C Gasparini
- Centre for Evolutionary Biology, School of Animal Biology, University of Western Australia, Crawley, WA, Australia.,Department of Biology, University of Padova, Padova, Italy
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Kim T, Lawson MA. GnRH Regulates Gonadotropin Gene Expression Through NADPH/Dual Oxidase-Derived Reactive Oxygen Species. Endocrinology 2015; 156:2185-99. [PMID: 25849727 PMCID: PMC4430611 DOI: 10.1210/en.2014-1709] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The appropriate control of synthesis and secretion of the gonadotropin hormones LH and FSH by pituitary gonadotropes is essential for the regulation of reproduction. The hypothalamic neuropeptide GnRH is the central regulator of both processes, coordinating secretion with transcription and translation of the gonadotropin hormone subunit genes. The MAPK family of second messengers is strongly induced in gonadotropes upon GnRH stimulation, and multiple pathways activate these kinases. Intracellular reactive oxygen species participate in signaling cascades that target MAPKs, but also participate in signaling events indicative of cell stress. The NADPH oxidase (NOX)/dual oxidase (DUOX) family is a major enzymatic source of intracellular reactive oxygen, and we show that GnRH stimulation of mouse primary pituitary cells and the LβT2 gonadotrope cell line elevates intracellular reactive oxygen via NOX/DUOX activity. Mouse pituitary and LβT2 cells abundantly express NOX/DUOX and cofactor mRNAs. Pharmacological inhibition of NOX/DUOX activity diminishes GnRH-stimulated activation of MAPKs, immediate-early gene expression, and gonadotropin subunit gene expression. Inhibitor studies implicate the calcium-activated DUOX family as a major, but not exclusive, participant in GnRH signaling. Knockdown of DUOX2 in LβT2 cells reduces GnRH-induced Fshb, but not Lhb mRNA levels, suggesting differential sensitivity to DUOX activity. Finally, GnRH pulse-stimulated FSH and LH secretion are suppressed by inhibition of NOX/DUOX activity. These results indicate that reactive oxygen is a potent signaling intermediate produced in response to GnRH stimulation and further suggest that reactive oxygen derived from other sources may influence the gonadotrope response to GnRH stimulation.
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Affiliation(s)
- Taeshin Kim
- Department of Reproductive Medicine, University of California, San Diego, La Jolla, California 92093
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Grant KE, de Oliveira RV, Hennington BS, Govindaraju A, Perkins A, Stokes J, Rowe D, Topper E, Kaya A, Moura A, Memili E. Sperm superoxide dismutase is associated with bull fertility. Reprod Fertil Dev 2015; 28:RD14399. [PMID: 25896743 DOI: 10.1071/rd14399] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2014] [Accepted: 01/20/2015] [Indexed: 02/28/2024] Open
Abstract
Decreasing mammalian fertility and sperm quality have created an urgent need to find effective methods to distinguish non-viable from viable fertilising spermatozoa. The aims of the present study were to evaluate expression levels of ?-tubulin 2C (TUBB2C), heat shock protein 10 (HSP10), hexokinase 1 (HXK1) and superoxide dismutase 1 (SOD1) in spermatozoa from Holstein bulls with varying fertility using western blotting and to analyse the biological networks of these key sperm proteins using a bioinformatics software (Metacore; Thomson-Reuters, Philadelphia, PA, USA). The rationales behind this study were that the sperm proteins play crucial roles in fertilisation and early embryonic development in mammals and ascertaining the biological networks of the proteins helps us better understand sperm physiology and early mammalian development. The results showed that expression of SOD1 was higher in spermatozoa from high fertility bulls (PPin vivo bull fertility. The findings are important because they illuminate molecular and cellular determinants of sperm viability and the identified protein markers can be used to determine bull fertility.
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Baker MA, Weinberg A, Hetherington L, Villaverde AI, Velkov T, Baell J, Gordon CP. Defining the Mechanisms by Which the Reactive Oxygen Species By-Product, 4-Hydroxynonenal, Affects Human Sperm Cell Function1. Biol Reprod 2015; 92:108. [DOI: 10.1095/biolreprod.114.126680] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 02/05/2015] [Indexed: 01/26/2023] Open
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