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de Almeida MA, Haupenthal LG, Silva AN, Schneider GM, Rosa PMDS, de Andrade AFC, Silva LA, Meirelles FV, da Silveira JC, Perecin F, Alves MBR. A longer period of epididymal sperm interaction with extender components during cryopreservation improves sperm quality, decreases the size of sperm distal cytoplasmic droplets, and changes the number of nanoparticles in the extender. Cryobiology 2024; 115:104901. [PMID: 38754687 DOI: 10.1016/j.cryobiol.2024.104901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/29/2024] [Accepted: 05/07/2024] [Indexed: 05/18/2024]
Abstract
While cryopreservation of cauda epididymal sperm (SpCau) allows the preservation of post-mortem bulls' gametes, the process triggers sperm damage. Although improving post-thaw sperm quality, using egg yolk extenders (EY) raises biosafety concerns which forces the use of EY-free extenders (EYFE). Since EYFE are less efficient in preserving post-thaw sperm quality, a strategy for ejaculated sperm (SpEj) frozen with EYFE is to add an Equilibrium Time (ET) step period to the cryopreservation process. However, the ET effect on the quality of SpCau cryopreserved in EYFE remains unknown. Distinct from SpEJ, SpCau physiologically displays cytoplasmic droplets (CDs) in the flagellum that may benefit cell exchange during ET. We hypothesized that using ET in SpCau cryopreserved with EYFE impacts sperm morphofunctional features, CD area, and in vitro fertility ability. Extender nanoparticles were also assessed. Following collection from the cauda epididymis of six Nellore bulls by retrograde flow, SpCau were cryopreserved in EYFE BoviFree® (Minitube, Germany) using three ET protocols: ET0 (no-ET); ET2.5 (2.5 h-ET); and ET5 (5 h-ET). SpCau from ET2.5 and ET5 showed a higher (P ≤ 0.05) percentage of motility and integrity of plasma and acrosome membranes and a smaller (P ≤ 0.05) distal CD area. There are no differences in sperm abnormalities, oxidative stress, capacitation-like events, and in vitro fertility ability. However, a better sperm recovery was found after Percoll® selection for ET2.5 and ET5. Interestingly, the number of nanoparticles in the extender decreased in post-thawed samples. In conclusion, an ET of 2.5 or 5 h is required for an efficient SpCau cryopreservation using an EYFE.
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Affiliation(s)
- Maria Alice de Almeida
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil; Jaguariuna University Center - UniFAJ-UniEduK, Jaguariúna, São Paulo, Brazil
| | - Laura Gabrielli Haupenthal
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil; Jaguariuna University Center - UniFAJ-UniEduK, Jaguariúna, São Paulo, Brazil
| | - Amanda Nespolo Silva
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Gabriela Melendes Schneider
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Paola Maria da Silva Rosa
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - André Furugen César de Andrade
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Luciano Andrade Silva
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Flávio Vieira Meirelles
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Juliano Coelho da Silveira
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Felipe Perecin
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil
| | - Maíra Bianchi Rodrigues Alves
- Department of Veterinary Medicine, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, São Paulo, Brazil; Department of Pathology, Theriogenology, and One Health, Faculty of Agricultural and Veterinary Sciences of São Paulo State University, Jaboticabal, São Paulo, Brazil.
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Khalil WA, Sharaf AE, Khalifa EI, El-Harairy MA, Swelum AA, Abdelnour SA. Recent approaches in the use of antioxidants and proteomic modifications in ram semen preservation. Reprod Domest Anim 2023; 58:1639-1653. [PMID: 37786951 DOI: 10.1111/rda.14485] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 09/11/2023] [Accepted: 09/22/2023] [Indexed: 10/04/2023]
Abstract
Sperm preservation is a well-established technique in reproductive biotechnology that is widely used to maintain the genetic quality of male individuals. However, there are several factors during the preservation process that can affect the vitality, functionality, and quality of sperm, thereby reducing their fertility potential after thawing. One of these factors is the synthesis of high levels of oxidative stress (OS) during semen preservation, which can have detrimental effects on sperm health and functionality. To counter the negative impact of OS on sperm, researchers have explored the supplementation of several exogenous antioxidants in the extenders used to preserve ram sperm. This approach has shown promising results in improving sperm health, functionality, and fertility potential in ram. Additionally, the preservation process can induce modifications in the ram sperm proteome. By employing targeted proteomics techniques, researchers have been able to identify and modify specific proteins in cryopreserved ram sperm, potentially offering further improvements in the quality of the cryopreserved ram sperm. In summary, this review provides a comprehensive overview of the antioxidants and targeted proteomics modifications that have been investigated for enhancing ram sperm preservation. These advancements aim to mitigate the negative effects of OS and optimize the techniques used in preserving ram sperm.
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Affiliation(s)
- Wael A Khalil
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - Asmaa E Sharaf
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - Ezz I Khalifa
- Animal Production Research Institute, Agricultural Research Center, Ministry of Agriculture, Dokki, Giza, Egypt
| | - Mostafa A El-Harairy
- Department of Animal Production, Faculty of Agriculture, Mansoura University, Mansoura, Egypt
| | - Ayman A Swelum
- Department of Animal Production, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
- Department of Theriogenology, Faculty of Veterinary Medicine, Zagazig University, Zagazig, Egypt
| | - Sameh A Abdelnour
- Department of Animal Production, Faculty of Agriculture, Zagazig University, Zagazig, Egypt
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Advances in sperm cryopreservation in farm animals: Cattle, horse, pig and sheep. Anim Reprod Sci 2022; 246:106904. [PMID: 34887155 DOI: 10.1016/j.anireprosci.2021.106904] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 11/29/2021] [Accepted: 12/01/2021] [Indexed: 12/14/2022]
Abstract
Sperm cryopreservation is one of the most important procedures in the development of biotechnologies for assisted reproduction. In some farm animals, the use of cryopreserved sperm has so many benefits for which relevance has become more evident in recent decades. Values for post-thaw sperm quality, however, are variable among species and within individuals of the same species. There is no standardized methodology for each of the stages of the cryopreservation procedure (andrological examination, semen collection, dilution, centrifugation, resuspension of the pellet with the freezing medium, packaging, freezing and post-thaw sperm evaluation), which also contributes to differences among studies. Cryotolerance markers of sperm and seminal plasma (SP) have been evaluated for prediction of ejaculate freezability. In addition, in previous research, there has been a focus on supplementing cryopreservation media with different substances, such as enzymatic and non-enzymatic antioxidants. In most studies, inclusion of these substances have led to improved post-thaw sperm quality and fertilizing capacity as a result of minimizing the adverse effects on sperm structure and function. Another approach is the use of different cryoprotectants. The aim with this review article is to provide an update on sperm cryopreservation in farm animals. The main detrimental effects of cryopreservation are described, including the negative repercussion on reproductive performance. Furthermore, the potential use of molecular biomarkers to predict sperm cryotolerance is discussed, as well as the addition of substances that can mitigate the harmful impact of freezing and thawing on sperm.
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Seminal Plasma Antioxidants Are Related to Sperm Cryotolerance in the Horse. Antioxidants (Basel) 2022; 11:antiox11071279. [PMID: 35883774 PMCID: PMC9311553 DOI: 10.3390/antiox11071279] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 06/21/2022] [Accepted: 06/25/2022] [Indexed: 02/01/2023] Open
Abstract
The objective of this study was to determine the relationship of enzymatic (superoxide dismutase, SOD; glutathione peroxidase, GPX; catalase, CAT; and paraoxonase type 1, PON1) and non-enzymatic antioxidants (measured in terms of: Trolox equivalent antioxidant capacity, TEAC; cupric-reducing antioxidant capacity, CUPRAC; and ferric-reducing ability of plasma, FRAP), as well as the oxidative stress index (OSI) in seminal plasma (SP) with the resilience of horse sperm to freeze-thawing. Twenty-one ejaculates (one per individual) were collected and split into two aliquots: the first was used to harvest the SP and assess the activity levels of antioxidants and the OSI, and the second one was cryopreserved. The following post-thaw sperm quality parameters were evaluated: sperm motility, plasma membrane and acrosome integrity, mitochondrial membrane potential, intracellular levels of reactive oxygen species (ROS), and plasma membrane lipid disorder. Based on post-thaw total motility (TM) and plasma membrane integrity (SYBR14+/PI−), ejaculates were hierarchically (p < 0.001) clustered into two groups of good (GFE) and poor (PFE) freezability. The SP activity levels of PON1, SOD, and TEAC were higher (p < 0.05) in GFE than in PFE, showing a positive relationship (p < 0.05) with some sperm motility parameters and with plasma membrane (PON1 and TEAC) and acrosome (SOD and TEAC) integrity. In contrast, OSI was higher (p < 0.05) in the SP of PFE than in that of GFE, and was negatively correlated (p < 0.05) to some sperm motility parameters and to plasma membrane and acrosome integrity, and positively (p < 0.05) to the percentage of viable sperm with high plasma membrane lipid disorder. In conclusion, enzymatic (PON1 and SOD) and non-enzymatic (TEAC) antioxidants of SP are related to horse sperm cryotolerance. In addition, our results suggest that PON1 could be one of the main antioxidant enzymes involved in the control of ROS in this species. Further investigation is needed to confirm the potential use of these SP-antioxidants and OSI to predict sperm cryotolerance in horses.
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Liu J, Yao T, Weng X, Yao R, Li W, Xie L, Yue X, Li F. Antioxidant properties and transcriptome of cauda epididymis with different levels of fertility in Hu lambs. Theriogenology 2022; 182:85-95. [DOI: 10.1016/j.theriogenology.2022.01.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 10/19/2022]
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Eicosapentaenoic acid supplemented to in vitro maturation medium results in lesser lipid content and intracellular reactive oxygen species in blastocysts of cattle. Anim Reprod Sci 2021; 229:106765. [PMID: 33989912 DOI: 10.1016/j.anireprosci.2021.106765] [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: 09/02/2020] [Revised: 05/04/2021] [Accepted: 05/05/2021] [Indexed: 11/20/2022]
Abstract
Sub-optimal cattle embryo development to the blastocyst stage still is a problem when conducting in vitro production (IVP) procedures. Supplementation of in vitro maturation (IVM) medium with omega 3-polyunsaturated eicosapentaenoic acid (EPA) is an approach that might have positive effects on lipid metabolism of cattle oocytes, potentially improving subsequent embryo development. The aim of this study was to evaluate effects of EPA addition to serum-free IVM medium on pronuclear formation after in vitro fertilization, cleavage, and blastocyst rates. Effects of EPA on lipid accumulation and intracellular reactive oxygen species (ROS) generation with IVP of cattle embryos was also investigated. In all experiments, cumulus-oocyte complexes were matured in IVM medium supplemented with 0 nM, 1 nM, or 1 μM EPA for 24 h. Pronuclear formation, cleavage, and blastocyst rates were similar for embryos when there was supplementation of EPA at all concentrations to those of the control group (P > 0.05). The inclusion of 1 nM EPA in medium resulted in a greater lipid content and less intracellular ROS in day 8-embryos compared with those of the Control group (P < 0.05). There were no differences, however, when there was inclusion of 1 μM EPA compared to embryos of the Control group at the day 8 developmental stage (P > 0.05). In conclusion, supplementation with IVM medium with the 1 nM EPA concentration resulted in a lesser blastocyst lipid and intracellular ROS concentration, without modifying embryo development, therefore, EPA could be a desirable supplement to improve embryo quality in cattle.
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The Effects of Antioxidants Provided with Feed on Certain Quality Parameters of Bull Semen Under Heat Stress Conditions. ACTA VET-BEOGRAD 2020. [DOI: 10.2478/acve-2020-0034] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
The aim of the current research was to assess the effects of the feed additive made of lyophilised melon juice (source of superoxide dismutase, SOD) and inactivated live Saccharomyces cerevisiae (strain R397) cells added to the feed via the product containing high levels of organically bound selenium (source of selenium-dependant glutathione peroxidase, Se-GPx) on the semen quality of bulls in heat stress conditions. The 15 bulls chosen for the experiment were assigned to three equal groups (control –group C; treated group M, given the source of SOD; and group A, treated with the source of Se-GPx). The research was conducted in summer. The activities of SOD and Se-GPx in seminal plasma were determined spectrophotometrically. Computer-assisted semen analysis was done to determine the sperm counts, motility and velocity. The temperature and humidity were recorded with a digital data logger.
The average SOD activity in the control bulls was significantly lower than in M (p<0.001) and A (p<0.001), whilst the average activities in the treated groups did not differ significantly (p=0.784). Higher average SOD activity compared to the control in the treated groups showed that both feed additives increased the antioxidative capacity of the seminal fluid. The average GPx activity in the control was significantly lower than in groups A (p=0.001) and M (p=0.005), whilst the two treatments did not lead to significantly different results (p=0.701). The analysis of relations between the activity of each enzyme and sperm motility and progressive motility in each of the bulls failed to detect a significant correlation. The analysis of the relation between THI (temperature-humidity index) and the activity of the antioxidative enzymes revealed that the increase in THI coincided with the decrease in the SOD activity in the control group, but with its increase in the treated groups (p>0.05). In all of the three groups with the increase in THI there was an increase in GPx activity (p>0.05). It can be concluded that in all of the three groups of bulls there was an increase in the activity of both enzymes in the seminal plasma, but the increase was significantly lower in the control. Thus, the antioxidative capacity of the seminal plasma of untreated bulls was proven to be lower in comparison with those of the treated animals.
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Yan B, Zhang X, Wang J, Jia S, Zhou Y, Tian J, Wang H, Tang Y. Inhibitory effect of Lycium barbarum polysaccharide on sperm damage during cryopreservation. Exp Ther Med 2020; 20:3051-3063. [PMID: 32855672 PMCID: PMC7444372 DOI: 10.3892/etm.2020.9060] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 05/29/2020] [Indexed: 12/16/2022] Open
Abstract
With the development of cryopreservation technology, marked progress has been made regarding sperm cryopreservation. However, as conventional cryopreservation agents are not effective at freezing weak sperm, improved cryopreservation agents are in demand. In the present study, the addition of Lycium barbarum polysaccharides to glycerol-egg-yolk-citrate sperm cryopreservation agent was determined to improve sperm forward speed, reduce the DNA fragmentation index and improve the mitochondrial membrane potential. Furthermore, during the freezing and thawing of sperm, the improved cryopreservative increased the content of Bcl-2 while reducing the content of Bax, cytochrome C and caspase-3. These results indicated that polysaccharides added as a protective agent preserved the normal function of sperm mitochondria. Transmission electron microscopy also confirmed the protective effect of the polysaccharides on the structure of mitochondria. It was also indicated that improved cryopreservative lowered the levels of reactive oxygen species (ROS) during the freeze-thawing process. Therefore, it is hypothesized that improved cryopreservative agents may be beneficial for maintaining the structure and function of the mitochondria of weak sperm when cryopreserved, which may be facilitated via reducing the production of ROS in the freezing-thawing process, thus avoiding activation of the apoptotic pathway in sperm mitochondria and protecting mitochondrial structure and sperm function.
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Affiliation(s)
- Bei Yan
- Ningxia Human Sperm Bank, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, P.R. China
| | - Xinzong Zhang
- National Health Committee Key Laboratory of Male Reproduction and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou, Guangdong 510600, P.R. China
| | - Juan Wang
- Department of Pathology, Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Shaotong Jia
- Reproductive Center, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, P.R. China
| | - Yue Zhou
- Ningxia Human Sperm Bank, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, P.R. China
| | - Jia Tian
- Ningxia Human Sperm Bank, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, P.R. China
| | - Hongyan Wang
- Ningxia Human Sperm Bank, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750001, P.R. China
| | - Yunge Tang
- National Health Committee Key Laboratory of Male Reproduction and Genetics, Family Planning Research Institute of Guangdong Province, Guangzhou, Guangdong 510600, P.R. China
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Amjad S, Rahman MS, Pang MG. Role of Antioxidants in Alleviating Bisphenol A Toxicity. Biomolecules 2020; 10:biom10081105. [PMID: 32722388 PMCID: PMC7465987 DOI: 10.3390/biom10081105] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 07/16/2020] [Accepted: 07/22/2020] [Indexed: 02/07/2023] Open
Abstract
Bisphenol A (BPA) is an oestrogenic endocrine disruptor widely used in the production of certain plastics, e.g., polycarbonate, hard and clear plastics, and epoxy resins that act as protective coating for food and beverage cans. Human exposure to this chemical is thought to be ubiquitous. BPA alters endocrine function, thereby causing many diseases in human and animals. In the last few decades, studies exploring the mechanism of BPA activity revealed a direct link between BPA-induced oxidative stress and disease pathogenesis. Antioxidants, reducing agents that prevent cellular oxidation reactions, can protect BPA toxicity. Although the important role of antioxidants in minimizing BPA stress has been demonstrated in many studies, a clear consensus on the associated mechanisms is needed, as well as the directives on their efficacy and safety. Herein, considering the distinct biochemical properties of BPA and antioxidants, we provide a framework for understanding how antioxidants alleviate BPA-associated stress. We summarize the current knowledge on the biological function of enzymatic and non-enzymatic antioxidants, and discuss their practical potential as BPA-detoxifying agents.
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Taşdemir U, Yeni D, İnanç ME, Avdatek F, Çil B, Türkmen R, Güngör Ş, Tuncer PB. Red pine (Pinus brutia Ten) bark tree extract preserves sperm quality by reducing oxidative stress and preventing chromatin damage. Andrologia 2020; 52:e13603. [PMID: 32294298 DOI: 10.1111/and.13603] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 03/16/2020] [Accepted: 03/25/2020] [Indexed: 12/11/2022] Open
Abstract
This study aimed to investigate the effectiveness of using red pine bark tree extract (P; Pinus brutia Ten) as a TRIS extender in an attempt to prevent oxidative stress in bull spermatozoa after freezing. Semen specimens were obtained from Simmental bulls via an artificial vagina and pooled. They were separated into five specimens and diluted with Tris extender consisting of P (200, 100, 50 and 25 µg/ml) and P free (control; C) up to a final concentration of 16 × 106 per straw. All specimens were equilibrated for a period of 4 hr at a temperature of 4°C, following which they were filled in 0.25-ml French straws and frozen. Addition of P resulted in favourable tail length in comparison with C (p < .05). The lowest malondialdehyde levels and the highest glutathione levels were detected in all P groups (p < .05). Supplementation with P did not show advanced results in terms of total, progressive sperm motility and total abnormality in comparison with C (p > .05). In conclusion, it has been shown that although P added to a Tris extender does not have a positive effect on sperm motility, it prevents chromatin damage by reducing oxidative stress, in addition to reducing head abnormalities when used at the amount of 50 μg/ml.
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Affiliation(s)
- Umut Taşdemir
- Technical Sciences Vocational School, Aksaray University, Aksaray, Turkey
| | - Deniz Yeni
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Afyon Kocatepe University, Afyonkarahisar, Turkey
| | - Muhammed Enes İnanç
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Mehmet Akif Ersoy University, Burdur, Turkey
| | - Fatih Avdatek
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Afyon Kocatepe University, Afyonkarahisar, Turkey
| | - Beste Çil
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Ankara University, Ankara, Turkey
| | - Ruhi Türkmen
- Faculty of Veterinary Medicine, Department of Pharmacology and Toxicology, Afyon Kocatepe University, Afyon, Turkey
| | - Şükrü Güngör
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Mehmet Akif Ersoy University, Burdur, Turkey
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Rahman MS, Kang KH, Arifuzzaman S, Pang WK, Ryu DY, Song WH, Park YJ, Pang MG. Effect of antioxidants on BPA-induced stress on sperm function in a mouse model. Sci Rep 2019; 9:10584. [PMID: 31332285 PMCID: PMC6646364 DOI: 10.1038/s41598-019-47158-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 07/11/2019] [Indexed: 11/09/2022] Open
Abstract
In the past few years, bisphenol A, (BPA) an endocrine-disrupting chemical, has received increasing attention because of its detrimental health effects. There is ample evidence to support that BPA interferes with the reproductive health of humans and animals. In spermatozoa, BPA-induced adverse effects are mostly caused by increased oxidative stress. Using an in vitro experimental model, we examined whether antioxidants (glutathione, vitamin C, and vitamin E) have defensive effects against BPA-induced stress in spermatozoa. The results showed that antioxidants inhibit the overproduction of reactive oxygen species (basically cellular peroxides) and increase intracellular ATP levels, thereby preventing motility loss and abnormal acrosome reaction in BPA-exposed spermatozoa. In particular, glutathione and vitamin E reduced the protein kinase A-dependent tyrosine phosphorylation in spermatozoa and, thus, prevented the precocious acrosome reaction from occurring. Furthermore, we found that the compromised fertilisation and early embryo development mediated by BPA-exposed spermatozoa can be improved following their supplementation with glutathione and vitamin E. Based on these findings, we suggest that antioxidants reduce oxidative stress in BPA-exposed spermatozoa, thus preventing detrimental effects on their function and fertility.
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Affiliation(s)
- Md Saidur Rahman
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Kyu-Ho Kang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Sarder Arifuzzaman
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Won-Ki Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Do-Yeal Ryu
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Won-Hee Song
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Yoo-Jin Park
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea
| | - Myung-Geol Pang
- Department of Animal Science & Technology and BET Research Institute, Chung-Ang University, Anseong, Gyeonggi-do, 456-756, Republic of Korea.
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Jakop U, Svetlichnyy V, Schiller J, Schulze M, Schroeter F, Mueller K. In vitro supplementation with unsaturated fatty acids improves boar sperm viability after storage at 6 °C. Anim Reprod Sci 2019; 206:60-68. [PMID: 31130256 DOI: 10.1016/j.anireprosci.2019.05.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Revised: 04/24/2019] [Accepted: 05/20/2019] [Indexed: 10/26/2022]
Abstract
Liquid preservation of the cold-sensitive boar sperm at a lesser temperature than the standard 17 °C would reduce bacterial growth and minimize the use of antibiotics. There was assessment, therefore, of the capacity of individual fatty acids bound to fatty acid free BSA to improve sperm survival at 6 °C because oxidative stress and lipid degradation are prominent detrimental factors. Different effects of the fatty acids were observed. Supplementation with naturally occurring fatty acids (linolenic, linoleic, oleic, palmitoleic acid), which may become metabolically incorporated into sperm lipids, increased the number of motile and progressively motile sperm after 2 days of storage during a thermo-resistance test (5 h at 38 °C) to that of control samples preserved at 17 °C in pure Beltsville Thawing Solution. With the exception of linolenic acid, all naturally occurring fatty acids enhanced the number of sperm with active mitochondria after 3 days of storage. Palmitoleic acid was the most effective supplement with effects already present when sperm were re-warmed for 30 min after 2 and 7 days of storage. The non-endogenous, non-integrated timnodonic acid (20:5) had no effect on sperm variables. Because the application of individual fatty acids attached to BSA had differing effects in preserving boar sperm at 6 °C, the use of combinations of fatty acids could be more efficacious than with use of natural lipid supplements for low temperature preservation of sperm.
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Affiliation(s)
- U Jakop
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315, Berlin, Germany; Institute for Reproduction of Farm Animals Schönow e.V., Bernauer Allee 10, D-16321, Bernau, Germany
| | - V Svetlichnyy
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315, Berlin, Germany; Institute for Reproduction of Farm Animals Schönow e.V., Bernauer Allee 10, D-16321, Bernau, Germany
| | - J Schiller
- University of Leipzig, Medical Faculty, Institute of Medical Physics and Biophysics, Haertelstr. 16-18, D-04107, Leipzig, Germany
| | - M Schulze
- Institute for Reproduction of Farm Animals Schönow e.V., Bernauer Allee 10, D-16321, Bernau, Germany
| | - F Schroeter
- Department of Cardiovascular Surgery, Heart Center Brandenburg, Brandenburg Medical School "Theodor-Fontane", Ladeburger Str. 17, D-16321, Bernau, Germany
| | - K Mueller
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315, Berlin, Germany.
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