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Moniz I, Soares M, Sousa AP, Ramalho-Santos J, Branco A. The Low Survivability of Transplanted Gonadal Grafts: The Impact of Cryopreservation and Transplantation Conditions on Mitochondrial Function. BIOLOGY 2024; 13:542. [PMID: 39056734 PMCID: PMC11274302 DOI: 10.3390/biology13070542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 07/10/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024]
Abstract
Advances in tissue preservation techniques have allowed reproductive medicine and assisted reproductive technologies (ARTs) to flourish in recent years. Because radio- and chemotherapy procedures are often gonadotoxic, irreversible damage can preclude future gamete production and endocrine support. Accordingly, in recent years, the freezing and storage of gonadal tissue fragments prior to the first oncological treatment appointment and autologous transplantation post-recovery have been considered improved solutions for fertility recovery in cancer survivors. Nevertheless, the cryopreservation and transplantation of thawed tissues is still very limited, and positive outcomes are relatively low. This review aims to discuss the limitations of oncofertility protocols with a focus on the impacts of mitochondrial dysfunction, oxidative stress, and the loss of antioxidant defense in graft integrity.
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Affiliation(s)
- Inês Moniz
- Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research, University of Coimbra, 3030-789 Coimbra, Portugal; (I.M.)
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal
| | - Maria Soares
- Doctoral Programme in Experimental Biology and Biomedicine (PDBEB), Institute for Interdisciplinary Research, University of Coimbra, 3030-789 Coimbra, Portugal; (I.M.)
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal
| | - Ana Paula Sousa
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal
- Reproductive Medicine Unit, Unidade Local de Saúde de Coimbra, Praceta Prof. Mota Pinto, 3000-075 Coimbra, Portugal
- Eugin Coimbra, Rua Filipe Hodart, 3000-185 Coimbra, Portugal
| | - João Ramalho-Santos
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal
- Department of Live Sciences, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Ana Branco
- CNC—Centre for Neuroscience and Cell Biology, CIBB—Centre for Innovative Biomedicine and Biotechnology, University of Coimbra, Azinhaga de Santa Comba, Polo 3, 3000-548 Coimbra, Portugal
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Zandiyeh S, Kalantari H, Fakhri A, Nikkhah M, Janani BJ, Sabbaghian M. A review of recent developments in the application of nanostructures for sperm cryopreservation. Cryobiology 2024; 115:104890. [PMID: 38555012 DOI: 10.1016/j.cryobiol.2024.104890] [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: 07/25/2023] [Revised: 03/15/2024] [Accepted: 03/19/2024] [Indexed: 04/02/2024]
Abstract
In the 1970s, sperm cryopreservation was presented as a unique route to fertility preservation. The ability to cryopreserve sperm from all species is challenging. The sperm cryopreservation process encompasses various cellular stresses such as increased osmotic pressure, ice crystal formation, and thermal shock, therefore decreasing the quality of sperm. The nanostructures due to their inherent features such as reactivity, high uptake, active surface area, and antioxidant activity, have contributed to modifying freezing protocols. In this review, the current state of the art with regards to emerging applications of nanotechnology in sperm cryopreservation are reviewed, some of the most promising advances are summarized, and the limitations and advantages are comprehensively discussed.
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Affiliation(s)
- Saeed Zandiyeh
- Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran.
| | - Hamid Kalantari
- Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
| | - Ali Fakhri
- Nanotechnology Laboratory, Nano Smart Science Institute, Tehran, Iran
| | - Maryam Nikkhah
- Department of Nanobiotechnology, Faculty of Biological Sciences, Tarbiat Modares University, P.O. Box: 14115-175, Tehran, Iran
| | | | - Marjan Sabbaghian
- Department of Andrology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran, Iran
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Cocchia N, Merlo B, Calabria A, Spada S, Iacono E, Ciarcia R, Damiano S, Giordano E, Laperuta F, Gasparrini B, Del Prete C. Effect of Maca aqueous extract addition to a freezing extender for canine semen. Vet Res Commun 2024; 48:301-307. [PMID: 37676460 DOI: 10.1007/s11259-023-10163-5] [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: 03/17/2023] [Accepted: 06/27/2023] [Indexed: 09/08/2023]
Abstract
This study investigated the effect of the addition of Lepidium meyenii (Maca) to the freezing extender on the post-thaw quality of dog semen. Ten canine ejaculates were frozen following a two-step protocol using a tris-glucose-citrate egg yolk extender with or without the addition of 10 µl/mL of aqueous extract of Maca (Maca and ctrl groups, respectively). Prior to (fresh semen) and after freezing (T0) sperm motility, kinetic parameters, viability and mitochondrial membrane potential (MMP), as well as the levels of malondialdehyde (MDA) were evaluated. In addition, sperm motility, kinetic parameters, viability and MMP were examined up to 2 h of incubation of 37 °C after thawing (T1 and T2) to evaluate thermo-resistance. The addition of Maca reduced MDA concentration at T0 (p < 0.05) and increased total motility, the percentage of sperm with medium velocity and WOB at T1. Progressive motility decreased (p < 0.05) at T1 in the ctrl group, whereas it was not affected in Maca group at any time point. In addition, the percentage of hyperactivated spermatozoa remained constant at T1 in the ctrl, while in the Maca group an increase (p < 0.05) of this parameter was recorded. Although no differences were found for MMP between groups at any time points, a decrease of viable sperm with low MMP was observed in ctrl group between T0 and T1 and in Maca group between T1 and T2. The addition of Maca prior freezing reduced the extent of lipid peroxidation and activated canine sperm motility and hyperactivation after thawing.
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Affiliation(s)
- Natascia Cocchia
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Barbara Merlo
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Alfonso Calabria
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy.
| | - Stefano Spada
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Eleonora Iacono
- Department of Veterinary Medical Sciences, University of Bologna, Bologna, Italy
| | - Roberto Ciarcia
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Sara Damiano
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | | | | | - Bianca Gasparrini
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
| | - Chiara Del Prete
- Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Naples, Italy
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4
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Monteiro KS, Motta NC, Cardoso ACP, Souza SPD, Murgas LDS. Melatonin Supplementation for the Cryopreservation of Canine Sperm. Biopreserv Biobank 2023; 21:477-482. [PMID: 36169627 DOI: 10.1089/bio.2022.0009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Antioxidants can be used in sperm cryopreservation protocols to reduce oxidative stress that occurs due to the cryopreservation process. The aim of this study was to evaluate the effects of melatonin supplementation on quality and oxidative stress parameters in cryopreserved canine sperm. Eighteen sperm ejaculates were collected from 6 Frenchie Bulldog males (3 collections per male). Sperm motility parameters, membrane integrity, and sperm morphology were analyzed before the cryopreservation process. The extender used in cryopreservation was composed of Tris-egg yolk and ethylene glycol 5% was added as a cryoprotectant. The cryoprotective medium was supplemented with 1.0, 1.5, 2.0, 2.5, and 3.0 mM melatonin, and the control group (without melatonin). Post-thaw sperm was evaluated as described for fresh sperm and oxidative stress parameters (lipid peroxidation, catalase, and superoxide dismutase). Post-thaw sperm motility parameters, membrane integrity, sperm morphology, and oxidative stress parameters did not differ (p > 0.05) among the control group and samples supplemented with melatonin. The results of this study showed that melatonin supplementation had no positive or negative effect on the parameters evaluated. Thus, it is suggested that different concentrations of melatonin be tested to assess its effectiveness as an antioxidant in the cryopreservation process in canine sperm.
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Trends in Small Animal Reproduction: A Bibliometric Analysis of the Literature. Animals (Basel) 2022; 12:ani12030336. [PMID: 35158661 PMCID: PMC8833461 DOI: 10.3390/ani12030336] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 01/10/2022] [Accepted: 01/28/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Reproduction in small animals is an expanding research area, with focus on breeding improvement and clinical management of domestic carnivores. The aim of the present study was to conduct a bibliometric analysis of the literature of the last decade on small animal reproduction, to point out main sources, most prolific countries, and emerging and neglected topics. Results show that research in biotechnologies for assisted reproduction has a central and increasing role in this field. Diversity in author keywords was also pointed out and a consensus to better categorize research in this field is proposed to reduce this problem in the future. Abstract Small animal reproduction (SAR) is a main research field in veterinary medicine and bibliometric analyses are useful to investigate trends in specific research areas. The objective of the present study was to conduct a bibliometric analysis of the literature of the last decade on SAR. A search equation was created, and documents were retrieved from the Web of Science database. Documents were manually revised, categorized and R software version 4.1.2 with Bibliometrix R package version 3.1 and MS Excel were used to perform the analyses. The included documents (n = 1470) were mainly research articles (78%). The top countries for the number of documents and citations were Brazil, United States, Italy, Poland, and Korea. These also account for the most prolific authors and institutions. Analyses by author keywords, categories, and recent reviews of the literature suggest that research on the canine species is more abundant than research on the feline one and that reproductive biotechnologies are a main research focus. Some clinical topics are still considered niche or neglected themes (e.g., semen collection in tomcats, neonatology). However, heterogeneity and ambiguity in keywords and categories are undeniable. This study offers interesting insights, providing definitions for main keywords in the field of SAR.
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Macêdo IN, Arruda LCP, de Santana BB, de Moura TCM, Guerra MMP, Bezerra DG, Carneiro GF, Silva SV. The interference of ozone gas in kinects and mitochondrial potential of equine sperm submitted on cryopreservation. Anim Reprod 2021; 18:e20210075. [PMID: 34956402 PMCID: PMC8697724 DOI: 10.1590/1984-3143-ar2021-0075] [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: 07/22/2021] [Accepted: 11/25/2021] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to evaluate the effects of the addition of different concentrations of ozone to quarter horse semen submitted to cryopreservation. Six ejaculates from four stallions were collected and were divided in four experimental groups: a control group (BotuCRIO® extender) and three other groups with BotuCRIO® ozonized at concentrations of 6, 8 and 12 μg of O3/mL. The semen samples were diluted (200 x 106 spermatozoa/mL), filled in straws and frozen. After thawing (37 ºC, 30s), the samples were evaluated at 0, 30 and 60 minutes of incubation regarding sperm kinetics by a computer-assisted sperm analysis (CASA), and plasma membrane integrity (PMI), acrosome integrity (ACi) and mitochondrial membrane potential (MMP) by fluorescent probes. There was a reduction in the kinetic parameters total motility (TM), progressive motility (PM), curvilinear velocity (VCL), straight line velocity (VSL) and average path velocity (VAP) in all groups during the thermoresistance test (TT), a pattern also found in PMI and MMP analyses (p<0.05). There was no difference (p>0.05) between the control and treatment (6, 8, and 12 μg of O3/mL) groups, in any of the evaluated times for the kinetic parameters TM, linearity (LIN), straightness (STR), wobble index (WOB), amplitude of lateral head displacement (ALH) and beat cross frequency (BCF). Regarding the VCL, VSL and VAP parameters, the group treated with 6 μg did not differ from the control or from 8 μg, but was higher than 12 μg at 30 and 60 minutes. ACi and PMI did not differ between groups (p>0.05), but PMI was lower in groups 8 μg and 12 μg compared to the control and 6 μg (p<0.05). It was concluded that the addition of ozone does not present beneficial effects for cryopreservation of equine semen at the concentrations used and decreases important parameters of fertility.
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Affiliation(s)
- Iara Nóbrega Macêdo
- Programa de Pós-Graduação em Ciência Animal, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, Brasil
| | | | | | | | | | | | - Gustavo Ferrer Carneiro
- Departamento de Medicina Veterinária, Universidade Federal Rural de Pernambuco, Recife, PE, Brasil
| | - Sildivane Valcácia Silva
- Programa de Pós-Graduação em Ciência Animal, Centro de Ciências Agrárias, Universidade Federal da Paraíba, Areia, PB, Brasil.,Centro de Biotecnologia, Universidade Federal da Paraíba, João Pessoa, PB, Brasil
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Angrimani DDSR, Bicudo LDC, Luceno NL, Leemans B, Nichi M, Vannucchi CI, Van Soom A. A triple stain method in conjunction with an in-depth screening of cryopreservation effects on post-thaw sperm in dogs. Cryobiology 2021; 105:56-62. [PMID: 34902341 DOI: 10.1016/j.cryobiol.2021.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 11/13/2021] [Accepted: 12/08/2021] [Indexed: 12/18/2022]
Abstract
In order to accurately analyze the possible side effects of sperm cryopreservation, an in-depth screening of post-thaw sperm status is necessary. Thus, this study aimed to identify thorough effects of sperm cryopreservation, by evaluating the integrity of all specific structures of the canine spermatozoa. Thirteen (n = 13) mature dogs of different breeds were selected. Six dogs (n = 6) were subjected to sperm cryopreservation, whereas seven dogs (n = 7) were used as semen donors to validate a simultaneous assessment of sperm plasmatic, acrosomal, and mitochondrial membranes (triple stain) by fluorescent probes. Fresh and post-thaw semen samples were evaluated through a computer-assisted analysis of sperm motility, sperm morpho-functional evaluation, triple stain and sperm DNA integrity. Post-thaw semen samples had lower total and progressive motility, as well as higher percentage of minor and major defects. Moreover, post-thaw samples had higher percentage of sperm with plasma membrane and mitochondrial damage but intact acrosome, and also sperm with simultaneous damaged plasma, acrosomal and mitochondrial membranes. Furthermore, post-thaw sperm had higher protamination deficiency and DNA fragmentation. In conclusion, cryopreservation has a broad impact in sperm morphology and function, altering motility patterns, plasma, acrosome and mitochondrial membranes integrity, as well as sperm DNA.
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Affiliation(s)
- Daniel de Souza Ramos Angrimani
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87 -05508-270, São Paulo, Brazil
| | - Luana de Cássia Bicudo
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87 -05508-270, São Paulo, Brazil
| | - Nuria Llamas Luceno
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, 9000, Belgium
| | - Bart Leemans
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, 9000, Belgium
| | - Marcilio Nichi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87 -05508-270, São Paulo, Brazil
| | - Camila Infantosi Vannucchi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87 -05508-270, São Paulo, Brazil.
| | - Ann Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, Merelbeke, 9000, Belgium
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Gallelli MF, Allera C, Moncalvo E, Caldevilla M, Miragaya M, Monachesi N. Detection of lipid peroxidation in dog spermatozoa with the fluorescent dye C11-BODIPY 581/591. Reprod Domest Anim 2021; 57:196-199. [PMID: 34748661 DOI: 10.1111/rda.14041] [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: 08/10/2021] [Accepted: 11/03/2021] [Indexed: 11/27/2022]
Abstract
C11-BODIPY581/591 is a fluorescent probe that has been successfully used to evaluate lipid peroxidation in different species, but it has not been completely studied in the dog. Thus, the aim of the present study was to assess lipid peroxidation of dog spermatozoa using C11-BODIPY581/591 and compare different positive controls of the technique. Twenty-four ejaculates were collected from 8 adult male dogs. Routine seminal characteristics were evaluated in raw semen. Lipid peroxidation evaluation was performed as described in other species. Samples were divided in three aliquots, exposed to UV radiation, incubated with hydrogen peroxide or left without treatment (control). Lipid peroxidation was significantly greater only in UV-exposed samples than in the control ones (91 ± 6% vs. 8.3 ± 3.5%, p ˂ .01). In conclusion, C11-BODIPY581/591 is useful to evaluate lipid peroxidation of dog spermatozoa and UV radiation is a good promoter of membrane oxidation, so irradiated samples can be used as a positive control of this technique.
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Affiliation(s)
- Maria F Gallelli
- Consejo Nacional de Investigaciones Científicas y Técnicas, Buenos Aires, Argentina.,Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Cecilia Allera
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Evangelina Moncalvo
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Mariana Caldevilla
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Marcelo Miragaya
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Buenos Aires, Argentina
| | - Norma Monachesi
- Facultad de Ciencias Veterinarias, Instituto de Investigación y Tecnología en Reproducción Animal (INITRA), Universidad de Buenos Aires, Buenos Aires, Argentina
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Güngör BH, Tektemur A, Arkali G, Dayan Cinkara S, Acisu TC, Koca RH, Etem Önalan E, Özer Kaya S, Kizil M, Sönmez M, Gür S, Çambay Z, Yüce A, Türk G. Effect of freeze-thawing process on lipid peroxidation, miRNAs, ion channels, apoptosis and global DNA methylation in ram spermatozoa. Reprod Fertil Dev 2021; 33:747-759. [PMID: 34585662 DOI: 10.1071/rd21091] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 07/30/2021] [Indexed: 12/31/2022] Open
Abstract
This study was carried out to investigate the effect of the semen freeze-thawing process on the functionality and molecular structure of ram spermatozoa. The temperature of pooled and diluted semen at 38°C (group 1, control) was lowered to 5°C (group 2), and it was subjected to glycerolisation-equilibration (group 3), frozen and thawed (group 4). Compared to the control, deterioration in spermatological parameters and significant increases in lipid peroxidation and global DNA methylation levels were observed in groups 3 and 4. When compared with the control, significant downregulation in the levels of miR-485 of group 2, miR-29a of group 3 and let-7a, miR-485 and miR-29a of group 4, and significant upregulation in the levels of miR-107 of group 3 and miR-127 of groups 3 and 4 were detected. In comparison to the control, significant upregulation in the levels of CatSper1, CatSper2, CatSper3, CatSper4, ANO1 and TRPM3 of group 2, CatSper4, ANO1 and TRPM3 of group 3 and KCNJ11 of group 4, and significant downregulation in the CatSper 3 level of group 4 were determined. As a result, the semen freeze-thawing process causes motility and morphological disorders in rams. This may be due to molecular changes associated with lipid peroxidation in spermatozoa.
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Affiliation(s)
- Brahim Halil Güngör
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
| | - Ahmet Tektemur
- Faculty of Medicine, Department of Medical Biology, Firat University, Elazig, Turkey
| | - Gözde Arkali
- Faculty of Veterinary Medicine, Department of Physiology, Firat University, Elazig, Turkey
| | - Serap Dayan Cinkara
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
| | - Tutku Can Acisu
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
| | - Recep Hakki Koca
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Bingöl University, Bingöl, Turkey
| | - Ebru Etem Önalan
- Faculty of Medicine, Department of Medical Biology, Firat University, Elazig, Turkey
| | - Seyma Özer Kaya
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
| | - Meltem Kizil
- Faculty of Veterinary Medicine, Department of Physiology, Firat University, Elazig, Turkey
| | - Mustafa Sönmez
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
| | - Seyfettin Gür
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
| | - Zafer Çambay
- Department of Medical Services and Technics, Firat University, High School of Medical Services, Elazig, Turkey
| | - Abdurrauf Yüce
- Faculty of Veterinary Medicine, Department of Physiology, Firat University, Elazig, Turkey
| | - Gaffari Türk
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Firat University, Elazig, Turkey
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10
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Cryoprotective Effects of Ergothioneine and Isoespintanol on Canine Semen. Animals (Basel) 2021; 11:ani11102757. [PMID: 34679779 PMCID: PMC8532791 DOI: 10.3390/ani11102757] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/11/2021] [Accepted: 09/12/2021] [Indexed: 12/03/2022] Open
Abstract
Simple Summary Cryopreserving dog semen allows the long-term availability of male gametes for future artificial insemination and other assisted reproductive techniques. However, freezing causes irreversible damage to sperm that can affect its ability to fertilize and generate a viable pregnancy. Sperm alterations are partly attributed to oxidation produced by reactive oxygen species (ROS); therefore, antioxidants have been included as extenders for seminal cryopreservation. The unconventional natural antioxidants might reduce deleterious changes in cryopreserved dog sperm; therefore, we evaluated the effects of cryopreservation with the antioxidants ergothioneine and isoespintanol on thawed canine sperm. Various concentrations of both antioxidants improved the movement capacity and structure of thawed spermatozoa, possibly by reducing ROS production. The unconventional antioxidants isoespintanol and ergothioneine improved the quality of cryopreserved canine semen and hence improved assisted canine reproduction. Abstract Sperm undergo oxidative stress due to excessive production of reactive oxygen species (ROS) during cryopreservation. Some unconventional natural antioxidants can reduce ROS-induced changes in cryopreserved canine sperm. This study aimed to identify the cryoprotective effects of ergothioneine and isoespintanol on the quality of thawed canine semen. Twelve ejaculates from six dogs were cryopreserved in a tris-yolk extender without (control) or with 50 (E50), 100 (E100), or 150 (E150) µM ergothioneine or 20 (I20), 40 (I40), or 60 (I60) µM isoespintanol. We evaluated the motility and kinetics of thawed sperm using computerized analysis; determined morphology by eosin-nigrosin staining; functional membrane integrity using hypoosmotic tests, and structural membrane and acrosome integrity; mitochondrial membrane potential by fluorescence microscopy; and ROS production by spectrophotometry. Data were statistically analyzed using mixed models and Tukey tests. E100 increased total (60.6% vs. 49.6%) and progressive (26.4% vs. 20.1%) motility, straight line velocity (41.3 vs. 35.9 µm/s), and rapid sperm (17.6% vs. 12.3%) compared with controls. However, E150 reduced the numbers of hyperactive sperm. E100, I40, and I60 reduced the abnormal morphology and ROS production, and all concentrations of both antioxidants increased acrosomal integrity. We concluded that ergothioneine and isoespintanol reduce deleterious sperm alterations and oxidative stress in thawed canine semen.
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11
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Araujo MS, de Oliveira Henriques Paulo OL, Paulini F, de Souza Ramos Angrimani D, Tsunemi MH, de Paula Freitas Dell'Aqua C, Papa FO, de Souza FF. Seminal Plasma Does Not Influence Canine Semen Stored at 5°C for Long-Term Conservation. Biopreserv Biobank 2021; 20:149-162. [PMID: 34515526 DOI: 10.1089/bio.2021.0054] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Seminal plasma has several components that protect the sperm cells and assist in the fertilization process. In contrast, the exact role carried out by seminal plasma during the cooling of canine semen remains controversial. Moreover, concerning the long estrus period, the possibility to store chilled semen at 5°C for more than 72 hours and maintain good sperm quality for additional inseminations could increase fertilization rates. Thus, this study aimed to evaluate the seminal plasma influence on quality and oxidative stress of the extended canine semen stored at 5°C for 7 days. Three ejaculate pools from eight healthy dogs were collected by digital manipulation of the penis. The sperm kinetics, sperm vitality (eosin/nigrosin stain), integrity of plasma and acrosomal membranes, morphology, superoxide and hydrogen peroxide production, mitochondrial potential, lipid peroxidation, and oxygen reactive species production (induced and spontaneous thiobarbituric acid [thiobarbituric acid reactive substances, TBARS] assay) were evaluated every 48 hours (M0, M48, M96, and M168) until 7 days (168 hours) in cooled extended (TRIS egg yolk) semen of dogs at 5°C with (+SP) or without (-SP) autologous seminal plasma. No statistical difference was found for sperm kinetics in cooled samples with +SP and -SP during the experimental time period, except for the progressive motility of +SP samples that was higher at M48 than M96 (p = 0.023). The seminal plasma did not influence any other evaluated sperm characteristics. Finally, our results demonstrated that the presence or lack of seminal plasma during cooling the semen of dogs does not influence sperm quality at 5°C. Moreover, the components of the semen extender may contribute to maintaining good sperm quality and low reactive oxygen species production during the long period of the dog's semen cooling, even after semen centrifugation.
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Affiliation(s)
- Michelle Silva Araujo
- Department of Veterinary Surgery and Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Otávio Luís de Oliveira Henriques Paulo
- Department of Veterinary Surgery and Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Fernanda Paulini
- Department of Physiological Sciences, Institute of Biological Sciences, University of Brasília, Brasília, Brazil
| | - Daniel de Souza Ramos Angrimani
- Department of Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, Brazil
| | - Miriam Harumi Tsunemi
- Department of Biostatistics, Biosciences Institute, São Paulo State University (UNESP), Botucatu, Brazil
| | - Camila de Paula Freitas Dell'Aqua
- Department of Veterinary Surgery and Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Frederico Ozanam Papa
- Department of Veterinary Surgery and Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
| | - Fabiana Ferreira de Souza
- Department of Veterinary Surgery and Animal Reproduction, Faculty of Veterinary Medicine and Animal Science, São Paulo State University (UNESP), Botucatu, Brazil
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12
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Pintus E, Ros-Santaella JL. Impact of Oxidative Stress on Male Reproduction in Domestic and Wild Animals. Antioxidants (Basel) 2021; 10:antiox10071154. [PMID: 34356386 PMCID: PMC8301082 DOI: 10.3390/antiox10071154] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 06/27/2021] [Accepted: 07/16/2021] [Indexed: 01/02/2023] Open
Abstract
Oxidative stress occurs when the levels of reactive oxygen species (ROS) overcome the antioxidant defenses of the organism, jeopardizing several biological functions, including reproduction. In the male reproductive system, oxidative stress not only impairs sperm fertility but also compromises offspring health and survival, inducing oxidative damage to lipids, proteins and nucleic acids. Although a clear link between oxidative stress and male fertility disorders has been demonstrated in humans and laboratory rodents, little information is available about the implications of impaired redox homeostasis in the male fertility of domestic and wild animals. Therefore, this review aims to provide an update regarding the intrinsic and extrinsic factors that are associated with oxidative stress in the male reproductive system and their impact on the reproductive performance of domestic and wild animals. The most recent strategies for palliating the detrimental effects of oxidative stress on male fertility are reviewed together with their potential economic and ecological implications in the livestock industry and biodiversity conservation.
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13
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The effect of L-glutamine and trehalose on dog sperm cryopreservation. ACTA VET BRNO 2021. [DOI: 10.2754/avb202190020201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
This study aimed to test different doses of L-glutamine and trehalose in the canine semen diluent while determining their protective effects on spermatological and biochemical indices of the thawed samples. Semen samples were collected from three fertile dogs using the digital manipulation method. The mixed ejaculates were divided into five portions at 37 °C and diluted with additives. Five study groups were formed with L-glutamine (10 and 20 mM), trehalose (25 and 50 mM), and no additives (control). After the dilution, the semen samples were cooled for 1.5 h at 5 °C and frozen (-110 to -120 °C) in liquid nitrogen vapor. Then, they were stored at -196 °C. For spermatological evaluations, samples were thawed at 38 °C for 30 s. L-glutamine (20 mM) was found to be significantly different (P < 0.05) and led to higher percentages of motility, membrane integrity, and acrosome integrity compared to the control group. Considering the total oxidant status (TOS) assay, the lower values were determined in all the antioxidant groups compared to the control group (P < 0.05). Supplementing the semen extender with L-glutamine showed a higher total antioxidant status (TAS) concentration compared to the control group (P < 0.05). As a result of this study, a higher protective effect was found in all the spermatological evaluations after thawing the frozen semen samples, especially in the group containing L-glutamine (20 mM).
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14
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Barrozo LG, Paulino LRFM, Silva BR, Barbalho EC, Nascimento DR, Neto MFL, Silva JRV. N-acetyl-cysteine and the control of oxidative stress during in vitro ovarian follicle growth, oocyte maturation, embryo development and cryopreservation. Anim Reprod Sci 2021; 231:106801. [PMID: 34252825 DOI: 10.1016/j.anireprosci.2021.106801] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 07/02/2021] [Accepted: 07/03/2021] [Indexed: 12/29/2022]
Abstract
Oxidative stress is generated by an imbalance between reactive oxygen species (ROS) formation and cellular defense mechanisms. To reduce cellular damage caused by ROS in vivo or in vitro, N-acetyl-cysteine (NAC) is converted into metabolites that have the capacity of stimulating synthesis of glutathione (GSH) which functions directly as free radical scavengers. The NAC antioxidant potential evaluated to the greatest extent is the indirect action of NAC, as a precursor of GSH, with glutathione being the primary antioxidant in cells. During long-term preantral follicle culture, NAC has a synergic action with FSH and an important function in sustaining preantral follicle growth and follicle-cell viability in vitro. The NAC inclusion in in vitro maturation medium for cumulus-oocyte complexes (COC) leads to protection of oocytes from damage induced by heat stress, reductions in ROS, and increases in cumulus cell expansion. Developing embryos are susceptable to oxidative stress because of susceptability to cellular structure damage and not having well-developed defense mechanisms. Results from various indicate there are beneficial effects of NAC on embryonic development by increasing GSH biosynthesis and regulating cell proliferation. In addition, NAC is also an effective antioxidant during cryopreservation of ovarian follicles, oocytes and embryos, because inclusion of NAC in preservation medium leads to improvements in mitochondrial function and cell viability, and reductions in ROS and cellular apoptosis. In this review, there is evaluation of mechanisms of action of NAC and beneficial effects during in vitro culture of preantral follicles, as well as oocyte maturation, embryonic development and cryopreservation.
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Affiliation(s)
- Laryssa G Barrozo
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - Laís R F M Paulino
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - Bianca R Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - Efigênia C Barbalho
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - Danisvânia R Nascimento
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - Miguel F Lima Neto
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil
| | - José R V Silva
- Laboratory of Biotechnology and Physiology of Reproduction (LABIREP), Federal University of Ceara, Av. Comandante Maurocélio Rocha Ponte 100, CEP 62041-040, Sobral, CE, Brazil.
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15
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Mahiddine FY, Kim MJ. Overview on the Antioxidants, Egg Yolk Alternatives, and Mesenchymal Stem Cells and Derivatives Used in Canine Sperm Cryopreservation. Animals (Basel) 2021; 11:1930. [PMID: 34203537 PMCID: PMC8300182 DOI: 10.3390/ani11071930] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/22/2021] [Accepted: 06/22/2021] [Indexed: 12/27/2022] Open
Abstract
Sperm cryopreservation is a widely used assisted reproductive technology for canine species. The long-term storage of dog sperm is effective for the breeding of dogs living far apart, scheduling the time of artificial insemination that suits the female, and preventing diseases of the reproductive tract. However, spermatozoa functions are impaired during the freeze-thaw processes, which may decrease reproductive performance. Numerous attempts have been made to restore such impairments, including the use of cryoprotectants to prevent the damage caused by ice crystal formation, and supplementation of antioxidants to reduce reactive oxygen species generation due to osmotic stress during the procedure. Egg yolk derivatives, antioxidants, and, more recently, mesenchymal stem cells (MSCs) and their derivatives have been proposed in this research field. This review article will summarize the current literature available on the topic.
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Affiliation(s)
| | - Min-Jung Kim
- Department of Research and Development, Mjbiogen Corp., Gwangnaru-ro 144, Seoul 14788, Korea;
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16
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Lechner D, Aurich J, Schäfer-Somi S, Herbel J, Aurich C. Combined cryopreservation of canine ejaculates collected at a one-hour interval increases semen doses for artificial insemination without negative effects on post-thaw sperm characteristics. Reprod Domest Anim 2021; 56:1220-1226. [PMID: 34173282 PMCID: PMC8518732 DOI: 10.1111/rda.13980] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 06/17/2021] [Indexed: 11/29/2022]
Abstract
A limiting factor in canine artificial insemination (AI) is the low number of insemination doses obtained per ejaculate. In this study, semen was collected from dogs (n = 28) either once and frozen directly after collection or the same dogs were submitted to a dual semen collection with a 1‐hr interval and the two ejaculates were combined for cryopreservation. We hypothesized that combining two ejaculates increases semen doses per cryopreservation process without negative effects on semen characteristics. Total sperm count was lower in semen from a single semen collection in comparison with the combination of the first and second ejaculate of a dual semen collection (p < .001). The percentage of motile and membrane‐intact spermatozoa determined by computer‐assisted sperm analysis (CASA) in raw semen did not differ between single and combined dual ejaculates and was reduced (p < .001) by cryopreservation to the same extent in single (motility 73.7 ± 1.8%, membrane integrity 65.6 ± 2.2%) and combined dual ejaculates (motility 72.7 ± 2.3%, membrane integrity 64.6 ± 2.5%). The percentage of spermatozoa with morphological defects increased after cryopreservation (p < .001) but was similar in single and combined dual ejaculates. The CASA sperm velocity parameters decreased with cryopreservation (p < .001) but did not differ between single and combined dual ejaculates. The number of insemination doses increased from 2.7 ± 0.4 for single to 4.7 ± 0.8 for combined dual ejaculates (p < .01), based on 100 million motile spermatozoa per frozen‐thawed semen dose. In conclusion, combining two ejaculates collected at short interval for one cryopreservation process increases the number of AI doses without compromising semen quality.
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Affiliation(s)
- Dominik Lechner
- Artificial Insemination and Embryo Transfer, Department for Small Animals and Horses, Vetmeduni Vienna, Vienna, Austria
| | - Jörg Aurich
- Obstetrics, Gynecology and Andrology, Department for Small Animals and Horses, Vetmeduni Vienna, Vienna, Austria
| | - Sabine Schäfer-Somi
- Artificial Insemination and Embryo Transfer, Department for Small Animals and Horses, Vetmeduni Vienna, Vienna, Austria
| | - Johannes Herbel
- Obstetrics, Gynecology and Andrology, Department for Small Animals and Horses, Vetmeduni Vienna, Vienna, Austria
| | - Christine Aurich
- Artificial Insemination and Embryo Transfer, Department for Small Animals and Horses, Vetmeduni Vienna, Vienna, Austria
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17
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Bustani GS, Baiee FH. Semen extenders: An evaluative overview of preservative mechanisms of semen and semen extenders. Vet World 2021; 14:1220-1233. [PMID: 34220124 PMCID: PMC8243668 DOI: 10.14202/vetworld.2021.1220-1233] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Accepted: 03/25/2021] [Indexed: 11/30/2022] Open
Abstract
Reproduction is fundamental for all living things as it ensures the continued existence of a species and an improved economy in animal husbandry. Reproduction has developed since history, and diverse processes, such as artificial insemination and in vitro fertilization, have been developed. Semen extenders were discovered and developed to protect sperm from harmful factors, such as freeze and osmotic shock, oxidative stress, and cell injury by ice crystals. Semen extenders preserve sperm by stabilizing its properties, including sperm morphology, motility, and viability and membrane, acrosomal, and DNA integrity. Therefore, semen extenders must provide a favorable pH, adenosine triphosphate, anti-cooling and anti-freeze shock, and antioxidant activity to improve semen quality for fertilization. Hence, this review provides precise data on different semen extenders, preservative mechanisms, and essential additives for semen extenders in different animals.
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Affiliation(s)
| | - Falah Hasan Baiee
- Department of Clinical Science, Faculty of Veterinary Medicine, University of Kufa, Kufa 54003, Najaf, Iraq
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18
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Bang S, Qamar AY, Tanga BM, Fang X, Cho J. Resveratrol supplementation into extender protects against cryodamage in dog post-thaw sperm. J Vet Med Sci 2021; 83:973-980. [PMID: 33896876 PMCID: PMC8267189 DOI: 10.1292/jvms.21-0125] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Antioxidants have multiple protective roles in a variety of cells and thus can be used to
protect sperm against cryo-damage during freezing, which affects fertility. The
antioxidant resveratrol (3,5,4-trihydroxytrans-stilbene; RSV) has been reported to protect
the animal sperm during cryopreservation, including human sperm. In this study, we
assessed the protective effects of RSV supplementation on dog sperm cryopreservation.
Semen was collected from four dogs and the effect of different concentrations of RSV (0,
100, 200, and 400 µM) on post-thaw sperm quality was examined. After thawing, sperm
motility was assessed using computer-aided sperm analysis, and the structural integrity of
the plasma membrane, acrosome, and chromatin was examined. In addition, their
mitochondrial activity and gene expression were also assessed. Dog sperm cryopreserved
with 200 µM RSV showed significant improvement in post-thaw sperm motility and viability
compared with that of the control group (P<0.05). Moreover,
RSV-supplemented samples showed significantly higher numbers of sperm with an intact
plasma membrane, active mitochondria, and structural integrity of acrosomes and chromatin
than that of control samples (P<0.05). Furthermore, gene expression
showed that RSV supplemented samples showed lower expression of pro-apoptotic
(BAX), reactive oxygen species (ROS) modulator oxidative stress-related
(ROMO1) and 8-oxoguanine DNA glycosylase 1 (OGG1)
whereas higher expression levels of anti‐apoptotic (BCL2), protamine-2
(PRM2), protamine-3 (PRM3) and sperm
acrosome‐associated 3 (SPACA3) genes than control. Our results suggest
that RSV, at its optimum concentration, can be efficiently used as an antioxidant in the
cryopreservation of dog sperm.
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Affiliation(s)
- Seonggyu Bang
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Ahmad Yar Qamar
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea.,Department of Clinical Sciences, College of Veterinary and Animal Sciences, Sub-campus, University of Veterinary and Animal Sciences, Jhang 35200, Lahore 54000, Pakistan
| | - Bereket Molla Tanga
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea.,Faculty of Veterinary Medicine, Hawassa University, 05 Hawassa, Ethiopia
| | - Xun Fang
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
| | - Jongki Cho
- College of Veterinary Medicine, Chungnam National University, Daejeon 34134, Republic of Korea
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19
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Deco-Souza T, Paula T, Araujo G, Bergo L, Carazo L, Vasconcelos G, Silva M. Effects of chelating calcium in cryopreservation extender on frozen-thawed dog semen. ARQ BRAS MED VET ZOO 2020. [DOI: 10.1590/1678-4162-10890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT We evaluated the effect of reducing free calcium in the cryopreservation medium, using the calcium chelator ethylene diamine tetracetic acid (EDTA) at 0.3% and 0.5% concentrations. Three male mixed breed dogs were subjected to semen collection by digital manipulation (n=16). Each ejaculate was divided in three aliquots, and each one was diluted in TRIS-glucose-egg yolk extender with 6% glycerol and 0.5% Equex STM Paste® (TGE, control); and added with 0.3% EDTA (EDTA 0.3) or 0.5% EDTA (EDTA 0.5). Calcium concentration reduced in EDTA 0.3 and all the calcium ions were chelated in EDTA 0.5. The EDTA addition did not affect sperm morphology or plasma membrane integrity; however, by removing all free calcium (EDTA 0.5), the sperm motility reduced (64.7% in TGE and 45% in EDTA 0.5; p<0.05). Acrosome integrity and sperm binding ability were not improved by calcium chelation. The failure to prevent the premature AR may explain why sperm longevity was not affected by calcium removal. Thus, the partial or complete calcium removal, through EDTA addition, is not able to prevent acrosomal damage or premature acrosomal reaction, and therefore does not improve the dog sperm binding ability.
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20
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Keskin N, Erdogan C, Bucak MN, Ozturk AE, Bodu M, Ili P, Baspinar N, Dursun S. Cryopreservation Effects on Ram Sperm Ultrastructure. Biopreserv Biobank 2020; 18:441-448. [PMID: 32816526 DOI: 10.1089/bio.2020.0056] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Cryoprotectants are known to have protective effects against cryodamage to spermatozoa. In this study, the cryoprotective effects of two cryoprotectants (glycerol, ethylene glycol) and cryoprotectants/trehalose combinations on frozen-thawed ram spermatozoa were investigated at the ultrastructural level. For this purpose, ejaculates collected from Konya Merino rams were pooled and diluted with a tris-based extender containing additives, including 5% glycerol, 3% glycerol +60 mM trehalose, 1.5% glycerol +100 mM trehalose, 5% ethylene glycol, 3% ethylene glycol +60 mM trehalose, and 1.5% ethylene glycol +100 mM trehalose. They were all cooled to 5°C and then frozen in 0.25 mL French straws in liquid nitrogen. The samples were thawed at 37°C and centrifuged to remove the diluents. Then, they were processed using a scanning transmission electron microscope. In the statistical analysis, the number of ultrastructurally cryodamaged and intact spermatozoa were counted in longitudinal and transverse ultrathin sections in all groups by electron microscopic examination. The amount of intact spermatozoa in the groups containing 5% ethylene glycol and 1.5% ethylene glycol +100 mM trehalose was found to be higher than other groups (p < 0.05). As a result, it was suggested that the groups of 5% ethylene glycol and 1.5% ethylene glycol +100 mM trehalose provided the highest protection for the ultrastructural morphology of frozen-thawed Konya Merino ram spermatozoa among the groups.
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Affiliation(s)
- Nazan Keskin
- Department of Histology and Embryology, Pamukkale University Faculty of Medicine, Denizli, Turkey
| | - Cennet Erdogan
- Department of Histology and Embryology, Pamukkale University Graduate School of Health Sciences, Denizli, Turkey
| | - Mustafa Numan Bucak
- Department of Reproduction and Artificial Insemination, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Ali Erdem Ozturk
- Department of Reproduction and Artificial Insemination, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Mustafa Bodu
- Department of Reproduction and Artificial Insemination, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Pınar Ili
- Denizli Health Services Vocational High School, Pamukkale University, Denizli, Turkey
| | - Nuri Baspinar
- Department of Biochemistry, Selcuk University, Veterinary Faculty, Konya, Turkey
| | - Sukru Dursun
- Department of Gynecology and Obstetrics, Aksaray University, Veterinary Faculty, Aksaray, Turkey
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21
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Angrimani DSR, Bicudo LC, Llamas Luceño N, Rui BR, Silva MF, Losano JDA, Leemans B, Van Soom A, Vannucchi CI. Does finasteride treatment for benign prostatic hyperplasia influence sperm DNA integrity in dogs? Basic Clin Androl 2020; 30:9. [PMID: 32695403 PMCID: PMC7364779 DOI: 10.1186/s12610-020-00108-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 06/30/2020] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Benign prostatic hyperplasia (BPH) is one of the most common reproductive disorders in both male dogs and men. Finasteride, a synthetic inhibitor of the enzyme 5α-reductase, is widely used as medical treatment. Although sperm can be affected by both BPH and finasteride treatment, the direct influence on DNA integrity remains unclear. Thus, the aim of this study was to verify the direct effect of BPH and/or finasteride treatment on DNA integrity of dog spermatozoa. A 2 × 2 factorial experiment was designed with 20 male dogs assigned to 4 experimental groups: BPH Group (n = 5), BPH-Finasteride Group (n = 5), Non-BPH Finasteride-Treated Group (n = 5) and Non-BPH Untreated Group (n = 5). Sperm evaluation was performed monthly for 60 days after the start of finasteride therapy or BPH diagnosis (D0, D30 and D60). Sperm DNA integrity was analyzed through fragmentation susceptibility (toluidine blue staining and Sperm Chromatic Structure Assay - SCSA), direct evaluation of DNA fragmentation (Sperm Chromatin Dispersion Assay - SCDA) and sperm protamination (chromomycin A3). RESULTS Sperm DNA integrity was not affected by finasteride treatment. However, BPH dogs had higher susceptibility to sperm DNA acid denaturation (SCSA) compared to dogs not presenting BPH, as well as lower percentage of sperm with DNA integrity (toluidine blue staining). CONCLUSION In conclusion, benign prostatic hyperplasia causes post-testicular sperm DNA damage, albeit finasteride treatment itself does not directly influence sperm DNA integrity.
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Affiliation(s)
- Daniel S. R. Angrimani
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, 05508-270 Brazil
| | - Luana C. Bicudo
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, 05508-270 Brazil
| | - Nuria Llamas Luceño
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Bruno R. Rui
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, 05508-270 Brazil
| | - Matheus F. Silva
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, 05508-270 Brazil
| | - João D. A. Losano
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, 05508-270 Brazil
| | - Bart Leemans
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Ann Van Soom
- Department of Reproduction, Obstetrics and Herd Health, Faculty of Veterinary Medicine, Ghent University, 9820 Merelbeke, Belgium
| | - Camila I. Vannucchi
- Department of Animal Reproduction, School of Veterinary Medicine and Animal Science, University of São Paulo, Av. Prof. Orlando Marques de Paiva, 87, São Paulo, 05508-270 Brazil
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22
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Sicherle CC, de Souza FF, Freitas-Dell'Aqua CDP, Mothé GB, Padovani CR, Papa FO, Lopes MD. Effects of the cryopreservation process on dog sperm integrity. Anim Reprod 2020; 17:e20190081. [PMID: 32399067 PMCID: PMC7212748 DOI: 10.21451/1984-3143-ar2019-0081] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Sperm cryopreservation has become an indispensable tool in reproductive biology. However, frozen/thawed semen has a short lifespan due to loss of sperm cell integrity. To better understand which sperm cell structures are compromised by the cryopreservation process and apoptosis markers, the sperm of five healthy mature dogs was analyzed in this study. Analysis was performed after collection, cooling, and thawing via computer assisted sperm analyzer (CASA) and evaluation of membrane fluidity and permeability, phosphatidylserine translocation (Annexin V), membrane integrity, mitochondrial membrane potential, membrane lipid peroxidation (LPO) and activity of the apoptotic markers caspases 3 and 7 by flow cytometry. Cryopreservation decreased total and progressive motility and the percentage of rapid sperm (P < 0.01). Damage to sperm cells was confirmed by Annexin V (P < 0.01), indicating that capacitation-like changes were induced by the cryopreservation procedures. An increase in sperm membrane fluidity was also noted in frozen/thawed samples (P < 0.01). Plasma and acrosomal cell membranes were affected (P < 0.01), with decreases in the subpopulation displaying high membrane potential (P < 0.01). Membrane LPO was increased in thawed sperm compared to cooled sperm (P < 0.05) but was not different from that in fresh sperm. No differences were observed in caspase 3 and 7 activity after cooling, freezing, or thawing. In conclusion, total and progressive motility, plasma membrane integrity and mitochondrial membrane potential suffered from the deleterious effects caused by cryopreservation, unlike the activity of caspases that remained stable during the freezing process.
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Affiliation(s)
- Carmen Cecilia Sicherle
- Departamento de Cirurgia Veterinária e Reprodução Animal, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
| | - Fabiana Ferreira de Souza
- Departamento de Cirurgia Veterinária e Reprodução Animal, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
| | - Camila de Paula Freitas-Dell'Aqua
- Departamento de Cirurgia Veterinária e Reprodução Animal, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
| | - Gabriele Barros Mothé
- Departamento de Cirurgia Veterinária e Reprodução Animal, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
| | - Carlos Roberto Padovani
- Departamento de Bioestatística, Instituto de Biociências, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
| | - Frederico Ozanam Papa
- Departamento de Cirurgia Veterinária e Reprodução Animal, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
| | - Maria Denise Lopes
- Departamento de Cirurgia Veterinária e Reprodução Animal, Universidade Estadual Paulista "Julio de Mesquita Filho", Botucatu, SP, Brasil
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Luvoni GC, Colombo M. Cold case: Small animal gametes cryobanking. Theriogenology 2020; 150:445-451. [PMID: 32164990 DOI: 10.1016/j.theriogenology.2020.02.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 02/29/2020] [Indexed: 01/06/2023]
Abstract
Germplasm preservation of animals, whether they are valuable domestic breeds or rare species, is the main goal of gamete cryobanking. Dogs and cats act as models for this purpose thanks to the wide availability of biological material which can be employed to experiment protocols that can then be applied to wild animals. This review is focused on spermatozoa, oocytes and gonadal tissues cryobanking in small domestic animals, which is still an unsolved case. Like in a courtroom, evidences of cryoinjuries affecting cellular structures will be presented, penalties as loss of functionality due to cellular alterations will be described, and appeal as strategies to protect gametes from damages or rescue their functionality will be discussed. Differences and similarities between single cell or tissue cryopreservation will be highlighted, together with the rationale for the choice of one type of preservation or another and the fundamental principles which they are based on. The deep analysis of different aspects that still hamper the success of cryopreservation in small animals can help clarify where research is most needed. Therefore, as in a cold case, investigation should remain open in order to hopefully find the solution and make these procedures more and more efficient in the future.
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Affiliation(s)
- Gaia Cecilia Luvoni
- Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare "Carlo Cantoni", Università degli Studi di Milano, Via Celoria 10, 20133, Milan, Italy.
| | - Martina Colombo
- Dipartimento di Scienze Veterinarie per la Salute, la Produzione Animale e la Sicurezza Alimentare "Carlo Cantoni", Università degli Studi di Milano, Via Celoria 10, 20133, Milan, Italy.
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Grandhaye J, Partyka A, Ligocka Z, Dudek A, Niżański W, Jeanpierre E, Estienne A, Froment P. Metformin Improves Quality of Post-Thaw Canine Semen. Animals (Basel) 2020; 10:ani10020287. [PMID: 32059492 PMCID: PMC7070956 DOI: 10.3390/ani10020287] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 02/07/2020] [Accepted: 02/07/2020] [Indexed: 12/14/2022] Open
Abstract
Simple Summary Cryopreservation of semen is getting easier, however, fertilizing results after insemination with frozen-thawed semen is still not constant in canine species depending on the breed and could be still improved. In this study, we decided to modulate the mitochondrial activity through the addition of metformin in semen extender to increase germ cells’ quality. Metformin presented the absence of toxicity and an improvement in sperm motility after thawing, as well as an increase in the expression of several molecular markers associated with quality. In addition, the oxidative stress and DNA damage were reduced in semen frozen in the presence of metformin. Overall, these data suggest that metformin added in canine semen extender has beneficial effects on canine semen quality and could be associated with different components such as vitamins, to enhance the antioxidants status. Abstract Sperm cryopreservation is an assisted reproductive technique routinely used in canine species for genetic conservation. However, during cryopreservation, the DNA damages are still elevated, limiting the fertilization rate. The present study was conducted to evaluate whether supplementation of canine semen extender with a molecule limiting the metabolic activities can improve the quality of frozen-thawed canine spermatozoa. We used metformin, known to limit the mitochondrial respiratory and limit the oxidative stress. Before and during the freezing procedure, metformin (50 µM and 500 µM) has been added to the extender. After thawing, sperm exposed to metformin conserved the same viability without alteration in the membrane integrity or acrosome reaction. Interestingly, 50 µM metformin improved the sperm motility in comparison to the control, subsequently increasing mitochondrial activity and NAD+ content. In addition, the oxidative stress level was reduced in sperm treated with metformin improving the sperm quality as measured by a different molecular marker. In conclusion, we have shown that metformin is able to improve the quality of frozen-thawed dog semen when it is used during the cryopreservative procedure.
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Affiliation(s)
- Jérémy Grandhaye
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France; (J.G.); (E.J.); (A.E.)
- CNRS UMR7247 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, 37380 Nouzilly, France
| | - Agnieszka Partyka
- Faculty of Veterinary Medicine, Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 49, 50-366 Wroclaw, Poland; (Z.L.); (A.D.); (W.N.)
- Correspondence: (A.P.); (P.F.); Tel.: +48-7-13-20-53-00 (A.P.); +33-2-47-42-78-24 (P.F.)
| | - Zuzanna Ligocka
- Faculty of Veterinary Medicine, Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 49, 50-366 Wroclaw, Poland; (Z.L.); (A.D.); (W.N.)
| | - Agata Dudek
- Faculty of Veterinary Medicine, Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 49, 50-366 Wroclaw, Poland; (Z.L.); (A.D.); (W.N.)
| | - Wojciech Niżański
- Faculty of Veterinary Medicine, Department of Reproduction and Clinic of Farm Animals, Wroclaw University of Environmental and Life Sciences, Pl. Grunwaldzki 49, 50-366 Wroclaw, Poland; (Z.L.); (A.D.); (W.N.)
| | - Eric Jeanpierre
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France; (J.G.); (E.J.); (A.E.)
- CNRS UMR7247 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, 37380 Nouzilly, France
| | - Anthony Estienne
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France; (J.G.); (E.J.); (A.E.)
- CNRS UMR7247 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, 37380 Nouzilly, France
| | - Pascal Froment
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France; (J.G.); (E.J.); (A.E.)
- CNRS UMR7247 Physiologie de la Reproduction et des Comportements, 37380 Nouzilly, France
- Université François Rabelais de Tours F-37041 Tours, France
- IFCE, 37380 Nouzilly, France
- Correspondence: (A.P.); (P.F.); Tel.: +48-7-13-20-53-00 (A.P.); +33-2-47-42-78-24 (P.F.)
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25
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Pignataro TA, Araújo JMD, Silva ABS, Freitas ML, Teixeira HCA, Pivato I, Oliveira RA. Comparison of extenders and storage temperature in chilling canine semen. CIÊNCIA ANIMAL BRASILEIRA 2020. [DOI: 10.1590/1809-6891v21e-52499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Abstract This study aimed to compare the effects a commercial milk-based extender and a self-made egg yolk extender had on the quality of canine semen stored at two different temperatures, 5ºC or 15ºC. The ejaculate obtained was split into two aliquots of equal volume and diluted with the milk or egg yolk extender. The final concentration was 100×106 spermatozoa/mL. Diluted semen was placed in transport containers and maintained at final storage temperatures of 5ºC and 15ºC. The quality of the chilled semen was assessed 12, 24, and 36 hours after storage. Semen diluted with the milk extender had higher motility, vigour, and plasma membrane integrity (p<0.05) of the spermatozoa than that diluted with the egg yolk extender. No difference in the semen quality was observed between the stored temperatures in both the groups. The difference observed between the extenders could be due to the standard formulation of the commercial milk extender and the presence of glucose in the mixture. In conclusion, the milk extender was better than the egg yolk extender at preserving the motility, viability, and membrane integrity of chilled canine semen for up to 36 hours. The storage temperature did not seem to affect the semen quality, suggesting that canine semen can be refrigerated at 15ºC.
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26
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López-Damián EP, Jiménez-Medina JA, Alarcón MA, Lammoglia MA, Hernández A, Galina CS, Fiordelisio T. Cryopreservation induces higher oxidative stress levels in Bos indicus embryos compared with Bos taurus. Theriogenology 2019; 143:74-81. [PMID: 31838342 DOI: 10.1016/j.theriogenology.2019.12.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 11/22/2019] [Accepted: 12/06/2019] [Indexed: 01/19/2023]
Abstract
Freezing and thawing of Bos indicus embryos affect their quality for embryo transfer. The objective of this study was to compare the levels of reactive oxygen species between Bos indicus and Bos taurus embryos produced in vivo, before and after conventional freezing, as well as to analyze damage caused by apoptosis and lipid peroxidation. Bos indicus has higher levels of reactive oxygen species than Bos taurus embryos, both fresh (14.32 ± 1.41 auf vs 8.07 ± 1.15 auf (arbitrary units of fluorescence), P < 0.05) and after freezing (20.91 ± 1.21 auf vs 14.39 ± 0.58 auf, P < 0.05). The number of apoptotic nuclei is also significantly higher in Bos indicus embryos than Bos taurus (8.28 ± 0.80 vs 1 ± 0.57, P < 0.05) but highlighting a notable increase after the freeze-thaw process in both subspecies (Bos indicus from 8.28 ± 0.80 to 10.71 ± 0.42, P < 0.05; Bos taurus from 1 ± 0.57 to 5.5 ± 1.15, P < 0.05). Finally, although lipid peroxidation is lower in Bos indicus embryos before freezing in comparison with Bos taurus (2.46 ± 0.14 vs 4.20 ± 0.51), the effect after the freeze-thaw process showed an increase of 4.34 in Bos indicus than Bos taurus embryos (51.45 ± 5.52 auf vs 11.85 ± 2.88 auf, P < 0.05). In conclusion, in comparison with Bos taurus, Bos indicus embryos undergo greater oxidative stress causing increases in the cryopreservation process, promoting major cell damage and lowering embryonic viability.
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Affiliation(s)
- Eva Patricia López-Damián
- Laboratorio de Neuroendocrinología Comparada, Departamento de Ecología y Recursos Naturales, Biología, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, México, CDMX, México
| | - José Alfredo Jiménez-Medina
- Laboratorio de Neuroendocrinología Comparada, Departamento de Ecología y Recursos Naturales, Biología, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, México, CDMX, México
| | - Marco Antonio Alarcón
- Facultad de Ciencias Biológicas y Agropecuarias, Universidad Veracruzana, 92800, Tuxpan, Veracruz, Mexico
| | - Miguel Angel Lammoglia
- Facultad de Ciencias Biológicas y Agropecuarias, Universidad Veracruzana, 92800, Tuxpan, Veracruz, Mexico
| | - Adalinda Hernández
- Departamento de Reproducción Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, México, CDMX, México
| | - Carlos S Galina
- Departamento de Reproducción Animal, Facultad de Medicina Veterinaria y Zootecnia, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, México, CDMX, México
| | - Tatiana Fiordelisio
- Laboratorio de Neuroendocrinología Comparada, Departamento de Ecología y Recursos Naturales, Biología, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510, México, CDMX, México.
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27
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Erdmann RH, Blank MH, Ribeiro RN, José de Oliveira M, Cubas ZS, Pradiee J, Goularte KL, Moreira N. Cryopreservation of margay (Leopardus wiedii) spermatozoa: Effects of different extenders and frozen protocols. Theriogenology 2019; 143:27-34. [PMID: 31830687 DOI: 10.1016/j.theriogenology.2019.11.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 10/23/2019] [Accepted: 11/27/2019] [Indexed: 01/07/2023]
Abstract
Sperm cryopreservation offers many benefits to wild felids conservation programs. However, the implementation of these programs is limited by the different responses of each species to the cryopreservation protocols and extenders used, requiring the formulation of species-specific protocols. For this purpose, semen samples from 6 margays (Leopardus wiedii) were submitted to 2 cryopreservation protocols: 1) manual freezing (cooling rate of - 0.33 °C/min at 5 °C/180 min and freezing rate with two steps - 9 °C/min for 2 min and -19.1 °C/min for 2 min) and 2) automatic freezing machine (cooling rate of - 0.25 °C/min at 5 °C/120 min and freezing rate with one step -20 °C/min for 8.3 min) using 2 commercial extenders, an egg yolk-based (Test Yolk Buffer; TYB) and an egg yolk-free extender (AndroMed; MED). Post-thawed sperm quality was assessed at 3 time points (immediately after thawing and 1 and 2 h post-thawed) by sperm motility index (SMI), plasma membrane and acrosomal integrity, and mitochondrial membrane potential (MMP). Regarding SMI, TYB yielded superior results (29.4 ± 3.5%) compared to MED (11.2 ± 2.8%; p < 0.002) immediately after thawing until 2 h after thawing (TYB 3.9 ± 1.7% and MED 0.0 ± 0.0%; p < 0.05). Furthermore, the automated freezing method provided higher motility compared to the manual freezing procedure immediately post-thaw (25.08 ± 3.66% and 15.78 ± 3.29%, respectively) and 1 h post-thaw (13.71 ± 2.56% and 6.03 ± 1.97%, respectively; p < 0.05). The percentage of intact acrosomes and plasma membranes and the percentage of sperm with high MMP were superior for TYB when compared to MED regardless of cryopreservation protocol (p < 0.05). Conversely, the interaction between cryopreservation protocols and extenders was observed for MMP where TYB exhibits better results compared to MED (p < 0.05) in both procedures, but it was higher in automated procedures. For MED, no changes were found in MMP between procedures. Considering only TYB, samples showed higher MMP when submitted to an automated procedure (p < 0.05). In conclusion, the slow cooling rates with shorter time of exposure to glycerol contributed to minimize cryodamage in the Margays' sperm. Moreover, results indicated that association between TYB and automatic freezing machine ensured the minimal quality of spermatozoa after thawing required for further use in in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI).
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Affiliation(s)
- Renato Herdina Erdmann
- Pontifical Catholic University of Paraná, School of Life Science, College of Veterinary Medicine, Toledo, Paraná, Brazil
| | - Marcel Henrique Blank
- Department of Animal Reproduction, College of Veterinary Medicine and Animal Science, University of São Paulo, São Paulo, SP, Brazil.
| | - Rodrigo Neca Ribeiro
- Pontifical Catholic University of Paraná, School of Life Science, College of Veterinary Medicine, Toledo, Paraná, Brazil
| | | | | | - Jorgea Pradiee
- Federal University of Pelotas, College of Veterinary Medicine, Pelotas, Rio Grande do Sul, Brazil
| | - Karina Lemos Goularte
- Federal University of Pelotas, College of Veterinary Medicine, Pelotas, Rio Grande do Sul, Brazil
| | - Nei Moreira
- Federal University of Paraná, Department of Biosciences, Palotina, Paraná, Brazil.
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Hernández-Avilés C, Ruíz-Cristancho A, Vergara-Galván M, Zambrano-Varón J, Jiménez-Escobar C. The Effect of N-N-Dimethylformamide on the Membrane Characteristics of Canine Spermatozoa After Cryopreservation, and its Relationship With Post-Thaw Motility. Top Companion Anim Med 2019; 38:100372. [PMID: 32115080 DOI: 10.1016/j.tcam.2019.100372] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 11/29/2022]
Abstract
Some studies have demonstrated that glycerol is superior to amides in preserving sperm motion characteristics of canine sperm; however, little is known about the effect of these cryoprotectants on the membrane characteristics of canine spermatozoa after freezing/thawing. In this study, the effects of using either N-N-dimethylformamide (DMF) or glycerol (GLY) on the integrity and function of the canine sperm, after cryopreservation were determined. We hypothesized that the use of a multiparametric approach for assessing the effect of DMF on the membranes of canine sperm would explain the lower values reported for post-thaw motility. Ejaculates from 12 dogs were collected, split into 2 groups, and frozen using a tris-fructose-citrate-egg yolk-based extender containing either 7% (v/v) GLY or 7% (v/v) DMF. Frozen straws (n = 120) were thawed and analyzed for subjectively-assessed sperm progressive motility, normal morphology, plasma membrane integrity, plasma membrane function (HOST+), acrosome membrane integrity, high mitochondrial membrane potential, and simultaneous assessment of sperm membrane integrity and function by a triple-staining fluorescent procedure. Overall, sperm motility and membrane intactness/function were higher when GLY was used as a cryoprotectant, as compared to DMF (P < .05). A model to explain the variation in progressive motility using the values obtained from the sperm integrity and function parameters was designed. The percent HOST+ sperm and high mitochondrial membrane potential sperm were mostly associated with the changes observed in the progressive motility (r2 = 0.84; P = .043) when either GLY or DMF were used as cryoprotectants. These results may explain the overall reduced sperm quality observed after cryopreservation, as a reflection of sublethal damage sustained by the sperm membranes.
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Affiliation(s)
- Camilo Hernández-Avilés
- Reproductive Biotechnology Laboratory, Section of Theriogenology and Herd Health, Department of Animal Health, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogota, DC, Colombia
| | - Andrea Ruíz-Cristancho
- Reproductive Biotechnology Laboratory, Section of Theriogenology and Herd Health, Department of Animal Health, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogota, DC, Colombia
| | - Mónica Vergara-Galván
- Reproductive Biotechnology Laboratory, Section of Theriogenology and Herd Health, Department of Animal Health, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogota, DC, Colombia
| | - Jorge Zambrano-Varón
- Reproductive Biotechnology Laboratory, Section of Theriogenology and Herd Health, Department of Animal Health, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogota, DC, Colombia
| | - Claudia Jiménez-Escobar
- Reproductive Biotechnology Laboratory, Section of Theriogenology and Herd Health, Department of Animal Health, Facultad de Medicina Veterinaria y de Zootecnia, Universidad Nacional de Colombia, Bogota, DC, Colombia.
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Effects from aging on semen quality of fresh and cryopreserved semen in Labrador Retrievers. Theriogenology 2019; 132:164-171. [PMID: 31029847 DOI: 10.1016/j.theriogenology.2019.04.013] [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: 07/02/2018] [Revised: 04/10/2019] [Accepted: 04/12/2019] [Indexed: 11/21/2022]
Abstract
Characteristics of frozen sperm associated with fertility and aging have not been fully determined in dogs. The aim of this study was to determine the relationship between fresh and post-thaw sperm quality, age, among the factors of motility, viability, morphology and oxidative stress in a group of fertile stud dogs with extensive breeding records and in dogs with reported subfertility problems. Sperm parameters from 39 fertile dogs were measured in fresh semen and frozen thawed semen. Additionally, frozen semen from 9 subfertile dogs was thawed and analyzed. Subfertile dogs were defined by referring veterinarians solely on the basis of owner history; breeding records were not available to this study. Evaluation included total motility (TM) and progressive motility (PM), average path velocity (VAP), viability, morphology and presence of sperm reactive oxygen species (ROS). Fertile males' ages ranged from 1 to 10 years, subfertile males' ages ranged from 4 to 14 years. All dogs were assigned to age groups according to age as young (1-3 years) middle (4-6 years) and senior (>7 years). The effect of sperm state (fresh vs. frozen-thawed), age, and fertility history (fertile vs. subfertile) on the measured endpoints were determined using a mixed effects model. TM showed a negative correlation with age in the frozen-thawed semen. Additionally, TM in fresh semen was higher in all age groups compared to post thaw semen (P < 0.05). PM was higher in all age dogs of fresh semen compared to frozen-thawed semen (P < 0.05). As such, TM and PM in post thaw semen statistically decreased compared to fresh semen regardless of age of stud male (P < 0.05). Differences in VAP were only observed between young and senior age groups in fresh semen (P < 0.05) while young and middle age dogs from fresh semen were different in all age groups for frozen-thawed semen (P < 0.05). ROS was higher in the young frozen-thawed semen compared to the young fresh semen (P < 0.05). When comparing TM, PM and VAP of fertile vs. subfertile dogs, middle aged fertile dogs are different from middle aged and senior subfertile dogs (P < 0.05). No differences were found in measures of ROS between fertile and subfertile. For sperm viability and morphology, differences were observed between all age groups of fertile dogs in comparison to all ages of subfertile dogs (P < 0.05). Sperm motility appeared to be the most affected parameter by freezing damage than any other parameter measured in this study, while we were not able to determine a significant association between ROS production and fertility status.
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Impact of selenium nano-particles in semen extender on bull sperm quality after cryopreservation. Theriogenology 2019; 126:121-127. [DOI: 10.1016/j.theriogenology.2018.12.017] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 11/08/2018] [Accepted: 12/04/2018] [Indexed: 11/22/2022]
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31
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Namula Z, Tanihara F, Wittayarat M, Hirata M, Nguyen NT, Hirano T, Le QA, Nii M, Otoi T. Effects of Tris (hydroxymethyl) aminomethane on the quality of frozen-thawed boar spermatozoa. Acta Vet Hung 2019; 67:106-114. [PMID: 30922097 DOI: 10.1556/004.2019.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Tris (hydroxymethyl) aminomethane (Tris) has been used as a pH regulator for buffering the pH of dilution extenders for boar semen, such as the Modena extender. The purpose of the present study was to assess the effects of Tris supplementation at different concentrations (0, 8, 24 and 72 μM) into the freezing extender on the quality and fertilising capacity of frozen-thawed boar spermatozoa. The results showed that the supplementation of 24 μM of Tris gave significantly higher percentages of sperm viability and plasma membrane integrity than those of the control group at any time point of assessment (0 h and 3 h post-thawing) (P < 0.05). However, there were no significant differences in the acrosome integrity parameter among the groups. Higher percentages of sperm motility were observed in the spermatozoa cryopreserved with 24 μM of Tris compared to the control groups when the samples were analysed 0 h after thawing (P < 0.05). However, an increase of the Tris concentration to 72 μM did not enhance the sperm motility parameters. The total numbers of fertilised oocytes and blastocysts obtained with spermatozoa frozen with 24 μM Tris were significantly higher than those of the control group without Tris (P < 0.05). In conclusion, the supplementation of 24 μM Tris into the freezing extender contributes to a better boar sperm quality and fertilising capacity after the process of freezing and thawing.
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Affiliation(s)
- Zhao Namula
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Fuminori Tanihara
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Manita Wittayarat
- 3 Faculty of Veterinary Science, Prince of Songkla University, Songkhla, Thailand
| | - Maki Hirata
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Nhien Thi Nguyen
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Takayuki Hirano
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Quynh Anh Le
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
| | - Masahiro Nii
- 4 Tokushima Prefectural Livestock Research Institute, Tokushima, Japan
| | - Takeshige Otoi
- 1 College of Agricultural Science, Guangdong Ocean University, Guangdong, China
- 2 Faculty of Bioscience and Bioindustry, Tokushima University, Ishii, Myozai-gun, Tokushima 779-3233, Japan
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Dynamic assessment of human sperm DNA damage II: the effect of sperm concentration adjustment during processing. J Assist Reprod Genet 2019; 36:799-807. [PMID: 30805848 DOI: 10.1007/s10815-019-01423-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 02/14/2019] [Indexed: 10/27/2022] Open
Abstract
PURPOSE To evaluate the effect of sperm concentration adjustment in human ejaculates on the sperm DNA quality and longevity. METHODS Semen samples were obtained from 30 donors with a normal spermiogram. Following centrifugation, the sperm pellet was resuspended in PBS, and the sperm concentration adjusted to 200, 100, 50, 25, 12, and 6 × 106/mL. Each set of samples was incubated at 37 °C for 24 h, and the sperm DNA damage was assessed using the chromatin-dispersion test following 0 h, 2 h, 6 h, and 24 h of incubation. RESULTS Sperm DNA fragmentation (SDF) did not differ between the selected experimental conditions at T0; however, Kaplan-Meier estimates for survival showed significant differences with respect to the dilution and time (all P values were smaller than .001). DNA fragmentation in semen samples adjusted to 200 × 106/mL was approximately 3.3 times higher when compared to samples containing 25 × 106/mL and 3.9 higher in comparison with samples adjusted to 12 × 106/mL following 2 h of in vitro incubation. Although there was evidence of individual variation in SDF during the incubation period, the general finding was that lower sperm concentrations resulted in a slower rate of DNA fragmentation. CONCLUSIONS Incubation of spermatozoa for ART purposes should be done following a concentration adjustment below 25 × 106/mL in order to avoid a higher susceptibility of the sperm DNA molecule towards fragmentation.
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Dalmazzo A, Losano JDA, Rocha CC, Tsunoda RH, Angrimani DDSR, Mendes CM, Assumpção MEODÁ, Nichi M, Barnabe VH. Effects of Soy Lecithin Extender on Dog Sperm Cryopreservation. Anim Biotechnol 2018; 29:174-182. [PMID: 28658593 DOI: 10.1080/10495398.2017.1334662] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Semen cryopreservation is an essential biotechnology in canine reproduction and during the cryopreservation process commonly egg yolk are used. The discrepancy in the egg yolk composition and the potential risk of disease dissemination are obstacles for semen exportation and use. Therefore, studies aiming to substitute egg yolk are extremely important. In this context, soy lecithin contains a low-density lipoprotein fraction, is an interesting alternative. Thus, the objective of this study was to compare extenders based on soy lecithin (several concentrations and forms) with egg yolk during the cryopreservation process of dog sperm. For this purpose, we used twelve dogs. Semen was evaluated at different time points (after refrigeration, glycerolization, and thawing), by motility analysis (CASA) and functional tests (e.g., membrane integrity-eosin/nigrosin, acrosome integrity-fast green/Bengal rose, mitochondrial activity-3'3 diaminobenzidine, Chromatin susceptibility to acid-induced denaturation-SCSA, and susceptibility to oxidative stress-thiobarbituric acid reactive substances). The results indicated that egg yolk and lower concentrations of lecithin had similar effects on mitochondrial activity and motility. Thus, soy lecithin is a potentially viable alternative to egg yolk for the cryopreservation of dog semen.
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Affiliation(s)
- Andressa Dalmazzo
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - João Diego A Losano
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Carolina C Rocha
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Roberta H Tsunoda
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Daniel de Souza Ramos Angrimani
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Camilla M Mendes
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Mayra Elena O D Ávila Assumpção
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Marcilio Nichi
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
| | - Valquíria H Barnabe
- a University of São Paulo, College of Veterinary Medicine and Animal Science , Department of Animal Reproduction , São Paulo , Brazil
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Establishment of Normal Reference Data of Analysis in the Fresh and Cryopreserved Canine Spermatozoa. JOURNAL OF ANIMAL REPRODUCTION AND BIOTECHNOLOGY 2018. [DOI: 10.12750/jet.2018.33.2.75] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
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Vieira NDMG, Losano JDDA, Angrimani DDSR, Kawai GKV, Bicudo LDC, Rui BR, da Silva BDCS, Assumpção MEOD, Nichi M. Induced sperm oxidative stress in dogs: Susceptibility against different reactive oxygen species and protective role of seminal plasma. Theriogenology 2018; 108:39-45. [DOI: 10.1016/j.theriogenology.2017.11.020] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 11/11/2017] [Accepted: 11/20/2017] [Indexed: 12/29/2022]
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Angrimani D, Nichi M, Brito M, Kawai G, Rui B, Losano J, Vieira N, Francischini M, Cruz D, Queiroz-Hazarbassanov N, Massoco C, Vannucchi C. The use of reduced glutathione (GSH) as antioxidant for cryopreserved sperm in dogs. ARQ BRAS MED VET ZOO 2018. [DOI: 10.1590/1678-4162-9684] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
ABSTRACT The aim of this study was to evaluate the effect of supplementation with different concentrations of reduced glutathione GSH (0; 5; 7.5; 10mM) in the extender for cryopreservation in dogs with evaluations performed after glycerolization (chilled) and thawing (thawed). For this purpose, we used 8 dogs and two semen collections were performed in a weekly interval, totaling 16 semen samples. The sperm were analyzed by automatic sperm motility (CASA) and flow cytometry analysis of mitochondrial potential (JC1 dye) and membrane/acrosome integrity (FITC-PI dyes). We evaluated subjectively the membrane and acrosome integrity, mitochondrial activity and DNA integrity. Seminal plasma was evaluated for lipid peroxidation (TBARS concentration). Chilled and thawed samples supplemented with 7.5 and 10mM of GSH had lower percentage of sperm with high (DAB - Class I) and medium (DAB - Class II) mitochondrial activity. And 10mM of GSH had higher percentage of low mitochondrial activity (DAB - Class III). Moreover, thawed samples of 10mM of GSH had high DNA fragmentation rates. Probably by a reductive stress effect on mitochondria which lead to an increase in reactive oxygen species, and a mitochondrial malfunction.
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Affiliation(s)
| | - M. Nichi
- Universidade de São Paulo, Brazil
| | | | | | - B.R. Rui
- Universidade de São Paulo, Brazil
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Angrimani DSR, Silva ROC, Losano JDA, Dalmazzo A, Tsunoda RH, Perez EGA, Góes PAA, Barnabe VH, Nichi M. Extender Supplementation with Antioxidants Selected after the Evaluation of Sperm Susceptibility to Oxidative Challenges in Goats. Anim Biotechnol 2018; 30:21-29. [PMID: 29382256 DOI: 10.1080/10495398.2018.1423992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
This study aimed to detect the most deleterious ROS for goat sperm and then supplemented the extender with a proper antioxidant. For this, 12 adult goats (aged 1-7) were used. Fresh samples were submitted to challenge with different ROS (superoxide anion, hydrogen peroxide, and hydroxyl radical) and malondialdehyde (MDA-toxic product of lipid peroxidation). After experiment 1, sperms were cryopreserved in extenders supplemented to glutathione peroxidase (Control: 0 UI/mL; GPx1: 1 UI/mL; GPx5: 5 UI/mL, and GPx10: 10 UI/mL) and catalase (Control: 0 UI/mL; CAT60: 60 UI/mL; CAT120: 120 UI/mL, and CAT240: 240 UI/mL). Each sample was evaluated by motility, plasma membrane integrity (eosin/nigrosin), acrosome integrity (fast green/rose bengal), sperm morphology, assay of the sperm chromatin structure, mitochondrial activity (3,3-diaminobenzidine), and measurement of lipid peroxidation (thiobarbituric acid reactive substances [TBARS]). It was possible to observe a mitochondrial dysfunction (DAB-Class IV) and low membrane integrity after hydrogen peroxide action. However, the high rates of TBARS were observed on hydroxyl radical. CAT240 presents the lower percentage of plasma membrane integrity. It was possible to attest that hydrogen peroxide and hydroxyl radical are the more harmful for goat sperm. Antioxidant therapy must be improving perhaps using combination between antioxidants.
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Affiliation(s)
- D S R Angrimani
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - R O C Silva
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - J D A Losano
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - A Dalmazzo
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - R H Tsunoda
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - E G A Perez
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - P A A Góes
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - V H Barnabe
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
| | - M Nichi
- a Department of Animal Reproduction, School of Veterinary Medicine and Animal Science , University of São Paulo , São Paulo , Brazil
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Angrimani DSR, Nagai KK, Rui BR, Bicudo LC, Losano JDA, Brito MM, Francischini MCP, Nichi M. Spermatic and oxidative profile of domestic cat (Felis catus
) epididymal sperm subjected to different cooling times (24, 48 and 72 hours). Reprod Domest Anim 2017; 53:163-170. [DOI: 10.1111/rda.13086] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Accepted: 08/20/2017] [Indexed: 01/24/2023]
Affiliation(s)
- DSR Angrimani
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - KK Nagai
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - BR Rui
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - LC Bicudo
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - JDA Losano
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - MM Brito
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - MCP Francischini
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
| | - M Nichi
- Department of Animal Reproduction; School of Veterinary Medicine and Animal Science; University of São Paulo; São Paulo Brazil
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Cryopreservation of cynomolgus macaque (Macaca fascicularis) sperm with glycerol and ethylene glycol, and its effect on sperm-specific ion channels - CatSper and Hv1. Theriogenology 2017; 104:37-42. [PMID: 28806626 DOI: 10.1016/j.theriogenology.2017.08.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 08/04/2017] [Accepted: 08/04/2017] [Indexed: 12/13/2022]
Abstract
The cryoprotective agent (CPA) is one of the most important factors that affects the cryosurvival of sperm. The aim of the present study was to compare two different CPAs, glycerol (Gly) and ethylene glycol (EG), on the cryopreservation of cynomolgus macaques sperm and evaluate the effects of cryopreservation on sperm motility, acrosomal integrity, DNA integrity, mitochondrial function and the sperm membrane ion channels CatSper and Hv1. Compared to fresh sperm, cryopreservation with either 0.7 M Gly or EG decreased the sperm motility (79.8 ± 1.5% Vs. 47.3 ± 1.8% and 47.6 ± 1.4%), acrosomal integrity (89.6 ± 1.2% Vs. 80.1 ± 1.8% and 79.6 ± 1.7%), DNA integrity (91.9 ± 0.7% Vs. 82.9 ± 1.0% and 82.3 ± 1.0%) and mitochondrial membrane potential (87.9 ± 1.8% Vs. 70.6 ± 2.7% and 67.9 ± 2.5%) and the quantity of the CatSper and Hv1 channels determined by Western Blot (p < 0.05), and EG showed equal cryoprotection to cynomolgus sperm in all of the sperm parameters. Our results indicated, for the first time, that cryopreservation decreases the quantity of sperm membrane ion channels (CatSper and Hv1), which might be one of the reasons that frozen sperm have a low fertilizing ability. The study will be beneficial to understand the biological process involved in sperm cryopreservation of nonhuman primates and contribute to improving cryopreservation protocols than can maintain sperm function and fertilizing ability.
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Cytoplasmic droplet acting as a mitochondrial modulator during sperm maturation in dogs. Anim Reprod Sci 2017; 181:50-56. [DOI: 10.1016/j.anireprosci.2017.03.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2017] [Revised: 03/24/2017] [Accepted: 03/26/2017] [Indexed: 12/11/2022]
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