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Song Y, Zhang N, Yue Y, Chen D, Chou C, An L, Cheng L, Zhang J, Tian J. Field outcomes of laparoscopic ovum pick-up combined with in vitro embryo production in sheep: Effects of long-acting recombinant ovine FSH pre-stimulation, collection frequency, and donor breed. Domest Anim Endocrinol 2024; 87:106826. [PMID: 38043389 DOI: 10.1016/j.domaniend.2023.106826] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/07/2023] [Accepted: 11/17/2023] [Indexed: 12/05/2023]
Abstract
Laparoscopic ovum pick-up (LOPU) combined with in vitro embryo production (IVEP) is a technology platform that improves the utilization rate of the elite ewe's ovarian oocytes and increases the number of obtained offspring. This study aimed to evaluate the effects of FSH pre-stimulation, serial oocyte collection, and breed on LOPU-IVEP under field conditions. Donors were randomly assigned to five groups (group A: decreasing doses of pituitary FSH (p-FSH); group B: constant doses of p-FSH; group C: two doses of long-acting recombinant ovine FSH (ro-FSH); group D: single administration of a long-acting ro-FSH in; group E: no FSH stimulation). Oocyte yield following LOPU (average recovered oocytes: 20.9 ± 0.5; average viable oocytes: 17.2 ± 0.4) and oocyte developmental competence (average blastocysts: 7.0 ± 0.2) in group C were significantly better than these of group D and group E, and similar to these of groups A and B. Meanwhile, there were no differences in oocyte yield and developmental capacity using repeated LOPU session at 1-, 2-, and 3-month intervals (p > 0.05). Finally, we compared LOPU-IVEP outcomes among five sheep breeds. The results indicated that East Friesian × Chinese Mongolian crossbred sheep and purebred East Friesian sheep had the more recovered oocytes and viable oocytes compared with the Suffolk, Dorper, and Texel breeds, and average number of blastocysts in East Friesian × Chinese Mongolian sheep group was also highest among the groups (8.1 ±0.3, p < 0.05). In summary, the results of this study indicate long-acting ro-FSH pre-stimulation combined with 12 times LOPU sessions over one year maximizes embryo production of elite donor ewes under field conditions.
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Affiliation(s)
- Yukun Song
- Inner Mongolia Key Laboratory of Sheep & Goat Genetics Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
| | - Nan Zhang
- Inner Mongolia Key Laboratory of Sheep & Goat Genetics Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China
| | - Yuan Yue
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Dayong Chen
- Inner Mongolia Sino Sheep Technology Co. Ltd., Ulanqab, Inner Mongolia 011800, China
| | - Chunjuan Chou
- Inner Mongolia Sino Sheep Technology Co. Ltd., Ulanqab, Inner Mongolia 011800, China
| | - Lei An
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - Lei Cheng
- Xilingol Vocational College, Xilinhot, Inner Mongolia 026000, China
| | - Jiaxin Zhang
- Inner Mongolia Key Laboratory of Sheep & Goat Genetics Breeding and Reproduction, College of Animal Science, Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China.
| | - Jianhui Tian
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China.
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Palazzese L, Turri F, Anzalone DA, Saragusty J, Bonnet J, Colotte M, Tuffet S, Pizzi F, Luciani A, Matsukawa K, Czernik M, Loi P. Reviving vacuum-dried encapsulated ram spermatozoa via ICSI after 2 years of storage. Front Vet Sci 2023; 10:1270266. [PMID: 38098985 PMCID: PMC10720722 DOI: 10.3389/fvets.2023.1270266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 11/14/2023] [Indexed: 12/17/2023] Open
Abstract
Introduction Freeze-drying techniques give alternative preservation mammalian spermatozoa without liquid nitrogen. However, most of the work has been conducted in the laboratory mouse, while little information has been gathered on large animals that could also benefit from this kind of storage. Methods This work adapted a technique known as vacuum-drying encapsulation (VDE), originally developed for nucleic acid conservation in anhydrous state, to ram spermatozoa, and compared it to canonical lyophilization (FD), testing long-term storage at room temperature (RT) and 4°C. Results and discussion The results demonstrated better structural stability, namely lipid composition and DNA integrity, in VDE spermatozoa than FD ones, with outcomes at RT storage comparable to 4°C. Likewise, in VDE the embryonic development was higher than in FD samples (12.8% vs. 8.7%, p < 0.001, respectively). Our findings indicated that in large mammals, it is important to consider dehydration-related changes in sperm polyunsaturated fatty acids coupled with DNA alterations, given their crucial role in embryonic development.
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Affiliation(s)
- Luca Palazzese
- Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Warsaw, Poland
| | - Federica Turri
- Institute of Agricultural Biology and Biotechnology (IBBA), National Research Council (CNR), Lodi, Italy
| | | | - Joseph Saragusty
- Department of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Jacques Bonnet
- Laboratoire de Recherche et Développement, Imagene Company, Pessac, France
- Institut Bergonié, INSERM, Université de Bordeaux, Bordeaux, France
| | - Marthe Colotte
- Plateforme de Production, Imagene, Genopole, Evry, France
| | - Sophie Tuffet
- Plateforme de Production, Imagene, Genopole, Evry, France
| | - Flavia Pizzi
- Institute of Agricultural Biology and Biotechnology (IBBA), National Research Council (CNR), Lodi, Italy
| | - Alessia Luciani
- Department of Veterinary Medicine, University of Teramo, Teramo, Italy
| | | | - Marta Czernik
- Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Warsaw, Poland
- Department of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Pasqualino Loi
- Department of Veterinary Medicine, University of Teramo, Teramo, Italy
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Ustuner B, Yagcıoglu S, Nur Z, Alcay S, Demir K, Gokce E, Bakırer Ozturk G, Toker B, Sagirkaya H, Soylu MK, Birler S, Pabuccuoglu S. Effects of triton X-100 pretreatment of lyophilized and frozen-thawed ram sperm on preimplantation embryo developmental competence. Anim Biotechnol 2023; 34:1573-1582. [PMID: 35200102 DOI: 10.1080/10495398.2022.2041433] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
In this study, it was aimed to determine the effect of destruction of lyophilized and frozen-thawed ram sperm plasma and acrosomal membrane on development of embryos produced by intracytoplasmic sperm injection (ICSI). Semen samples were divided into two groups for lyophilization (L) and freezing (F). For the removal of the plasma membrane, L and F groups were incubated with Triton X-100 (LTX-100 and FTX-100, respectively). Integrities of the plasma membrane, acrosome and chromatin structure were evaluated. Oocytes were injected with these sperm groups. Although no plasma membrane and acrosome integrities of the L (0.0%) group were detected, the plasma membrane integrity of the F group (69.4%) was significantly higher than the FTX-100 group (23.6%) (p < 0.05). The acrosome integrity of the FTX-100 group (3.80%) was significantly lower than the F group (55.6%) (p < 0.05). The chromatin integrities of L and F groups were higher than the Triton X-100 treated groups (p < 0.05). ICSIs with L, LTX-100, F and FTX-100 sperm were produced similar cleavage and blastocyst rates. In conclusion, data presented here confirm that ram spermatozoa can effectively be lyophilized and injected into oocytes for initiation of embryonic development and Triton X-100 pretreatment is not necessary while using lyophilized and frozen semen.
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Affiliation(s)
- Burcu Ustuner
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Selin Yagcıoglu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Zekariya Nur
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Selim Alcay
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Kamber Demir
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Elif Gokce
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Namık Kemal University, Tekirdag, Turkey
| | - Gul Bakırer Ozturk
- Department of Laboratory Animal Sciences, Istanbul University Aziz Sancar Institute of Experimental Medicine, Istanbul, Turkey
| | - Berk Toker
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Hakan Sagirkaya
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Mustafa Kemal Soylu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Bursa Uludag University, Bursa, Turkey
| | - Sema Birler
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Serhat Pabuccuoglu
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Istanbul University-Cerrahpasa, Istanbul, Turkey
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Holt WV. Biobanks, offspring fitness and the influence of developmental plasticity in conservation biology. Anim Reprod 2023; 20:e20230026. [PMID: 37700907 PMCID: PMC10494884 DOI: 10.1590/1984-3143-ar2023-0026] [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: 02/19/2023] [Accepted: 07/05/2023] [Indexed: 09/14/2023] Open
Abstract
Mitigation of the widely known threats to the world's biodiversity is difficult, despite the strategies and actions proposed by international agreements such as the United Nations Framework Convention on Climate Change (UNFCCC) and the Convention on Biological Diversity (CBD). Nevertheless, many scientists devote their time and effort to finding and implementing various solutions to the problem. One potential way forward that is gaining popularity involves the establishment of biobank programs aimed at preserving and storing germplasm from threatened species, and then using it to support the future viability and health of threatened populations. This involves developing and using assisted reproductive technologies to achieve their goals. Despite considerable advances in the effectiveness of reproductive technologies, differences between the reproductive behavior and physiology of widely differing taxonomic groups mean that this approach cannot be applied with equal success to many species. Moreover, evidence that epigenetic influences and developmental plasticity, whereby it is now understood that embryonic development, and subsequent health in later life, can be affected by peri-conceptional environmental conditions, is raising the possibility that cryopreservation methods themselves may have to be reviewed and revised when planning the biobanks. Here, I describe the benefits and problems associated with germplasm biobanking across various species, but also offer some realistic assessments of current progress and applications.
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Affiliation(s)
- William Vincent Holt
- Academic Unit of Reproductive and Developmental Medicine, University of Sheffield, Sheffield, United Kingdom
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5
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Yang LL, Ito D, Ushigome N, Wakayama S, Ooga M, Wakayama T. A novel, simplified method to prepare and preserve freeze-dried mouse sperm in plastic microtubes. J Reprod Dev 2023; 69:198-205. [PMID: 37357399 PMCID: PMC10435530 DOI: 10.1262/jrd.2023-034] [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: 03/30/2023] [Accepted: 05/12/2023] [Indexed: 06/27/2023] Open
Abstract
Although freeze-drying sperm can save space, reduce maintenance costs, and facilitate the transportation of genetic samples, the current method requires breakable, custom-made, and expensive glass ampoules. In the present study, we developed a simple and economical method for collecting freeze-dried (FD) sperm using commercially available plastic microtubes. Mouse epididymal sperm suspensions were placed in 1.5 ml polypropylene tubes, frozen in liquid nitrogen, and dried in an acrylic freeze-drying chamber, after which they were closed under a vacuum. The drying duration did not differ between the microtube and glass ampoule methods (control); however, the sperm recovery rate was higher using the microtube method, and the physical damage to the sperm after rehydration was also reduced. Intracytoplasmic sperm injection (ICSI) using FD sperm stored in microtubes at -30°C yielded healthy offspring without reducing the success rate, even after 9 months of storage. Air infiltration into all microtubes stored at room temperature (RT) within 2 weeks of storage caused a drastic decrease in the fertilization rate of FD sperm; underwater storage did not prevent air infiltration. RT storage of FD sperm in microtubes for 1 week resulted in healthy offspring after ICSI (5-18%), but the addition of silica gel or CaCl2 did not improve the success rate. Our novel microtube method is currently the simplest and most effective method for treating FD sperm, contributing to the development of alternative low-cost approaches for preserving and transporting genetic resources.
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Affiliation(s)
- Li Ly Yang
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Daiyu Ito
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Natsuki Ushigome
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Sayaka Wakayama
- Advanced Biotechnology Center, University of Yamanashi, Yamanashi 400-8510, Japan
| | - Masatoshi Ooga
- Graduate School of Veterinary Science, Azabu University, Kanagawa 252-5201, Japan
| | - Teruhiko Wakayama
- Faculty of Life and Environmental Science, University of Yamanashi, Yamanashi 400-8510, Japan
- Advanced Biotechnology Center, University of Yamanashi, Yamanashi 400-8510, Japan
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Thiangthientham P, Kallayanathum W, Anakkul N, Suwimonteerabutr J, Santiviparat S, Techakumphu M, Loi P, Tharasanit T. Effects of freeze-drying on the quality and fertilising ability of goat sperm recovered from different parts of the epididymis. Theriogenology 2023; 195:31-39. [DOI: 10.1016/j.theriogenology.2022.10.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 10/06/2022] [Accepted: 10/09/2022] [Indexed: 11/07/2022]
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Fatira E, Havelka M, Saito T, Landeira J, Rodina M, Gela D, Pšenička M. Intracytoplasmic sperm injection in sturgeon species: A promising reproductive technology of selected genitors. Front Vet Sci 2022; 9:1054345. [PMID: 36619956 PMCID: PMC9816131 DOI: 10.3389/fvets.2022.1054345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
Sturgeons are the most endangered species group and their wild populations continue to decrease. In this study, we apply intracytoplasmic sperm injection (ICSI), an assisted reproductive technology, for the first time in endangered and critically endangered sturgeons. Using various egg-sperm species combinations we performed different ICSI experiments with immobilized pre- or non-activated spermatozoa, single or many, fresh or cryopreserved. Then we evaluated the fertilization success as well as the paternity of the resultant embryos and larvae. Surprisingly, all experimental groups exhibited embryonic development. Normal-shaped feeding larvae produced in all egg-sperm species-combination groups after ICSI using single fresh-stripped non-activated spermatozoa, in one group after ICSI using single fresh-stripped pre-activated spermatozoa, and in one group after ICSI using multiple fresh-stripped spermatozoa. ICSI with single cryopreserved non-activated spermatozoa produced neurula stage embryos. Molecular analysis showed genome integration of both egg- and sperm-donor species in most of the ICSI transplants. Overall, ICSI technology could be used as an assisted reproduction technique for producing sturgeons to rescue valuable paternal genomes.
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Affiliation(s)
- Effrosyni Fatira
- Research Institute of Fish Culture and Hydrobiology, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia Ceske Budejovice, Ceské Budějovice, Czechia,Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain,*Correspondence: Effrosyni Fatira ✉
| | - Miloš Havelka
- Nishiura Station, South Ehime Fisheries Research Center, Ehime University, Matsuyama, Japan
| | - Taiju Saito
- Research Institute of Fish Culture and Hydrobiology, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia Ceske Budejovice, Ceské Budějovice, Czechia,Nishiura Station, South Ehime Fisheries Research Center, Ehime University, Matsuyama, Japan
| | - José Landeira
- Instituto de Oceanografía y Cambio Global, IOCAG, Universidad de Las Palmas de Gran Canaria, Las Palmas de Gran Canaria, Spain
| | - Marek Rodina
- Research Institute of Fish Culture and Hydrobiology, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia Ceske Budejovice, Ceské Budějovice, Czechia
| | - David Gela
- Research Institute of Fish Culture and Hydrobiology, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia Ceske Budejovice, Ceské Budějovice, Czechia
| | - Martin Pšenička
- Research Institute of Fish Culture and Hydrobiology, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia Ceske Budejovice, Ceské Budějovice, Czechia
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Sharafi M, Borghei-Rad SM, Hezavehei M, Shahverdi A, Benson JD. Cryopreservation of Semen in Domestic Animals: A Review of Current Challenges, Applications, and Prospective Strategies. Animals (Basel) 2022; 12:ani12233271. [PMID: 36496792 PMCID: PMC9739224 DOI: 10.3390/ani12233271] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2022] [Revised: 11/11/2022] [Accepted: 11/21/2022] [Indexed: 11/26/2022] Open
Abstract
Cryopreservation is a way to preserve germplasm with applications in agriculture, biotechnology, and conservation of endangered animals. Cryopreservation has been available for over a century, yet, using current methods, only around 50% of spermatozoa retain their viability after cryopreservation. This loss is associated with damage to different sperm components including the plasma membrane, nucleus, mitochondria, proteins, mRNAs, and microRNAs. To mitigate this damage, conventional strategies use chemical additives that include classical cryoprotectants such as glycerol, as well as antioxidants, fatty acids, sugars, amino acids, and membrane stabilizers. However, clearly current protocols do not prevent all damage. This may be due to the imperfect function of antioxidants and the probable conversion of media components to more toxic forms during cryopreservation.
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Affiliation(s)
- Mohsen Sharafi
- Department of Biology, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada
- Semex Alliance, Guelph, ON N1H 6J2, Canada
- Correspondence: (M.S.); (J.D.B.)
| | - Seyyed Mohsen Borghei-Rad
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
| | - Maryam Hezavehei
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
| | - Abdolhossein Shahverdi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Tehran 16635-148, Iran
| | - James D. Benson
- Department of Biology, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada
- Correspondence: (M.S.); (J.D.B.)
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9
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Falchi L, Ledda S, Zedda MT. Embryo biotechnologies in sheep: Achievements and new improvements. Reprod Domest Anim 2022; 57 Suppl 5:22-33. [PMID: 35437835 PMCID: PMC9790389 DOI: 10.1111/rda.14127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Accepted: 04/17/2022] [Indexed: 12/30/2022]
Abstract
To date, large-scale use of multiple ovulation and embryo transfer (MOET) programmes in ovine species is limited due to unpredictable results and high costs of hormonal stimulation and treatment. Therefore, even if considered reliable, they are not fully applicable in large-scale systems. More recently, the new prospects offered by in vitro embryo production (IVEP) through collection of oocytes post-mortem or by repeated ovum pick-up from live females suggested an alternative to MOET programmes and may be more extensively used, moving from the exclusive research in the laboratory to field application. The possibility to perform oocytes recovery from juvenile lambs to obtain embryos (JIVET) offers the great advantage to significantly reduce the generation interval, speeding the rate of genetic improvement. Although in the past decades several studies implemented novel protocols to enhance embryo production in sheep, the conditions of every single stage of IVEP can significantly affect embryo yield and successful transfer into the recipients. Moreover, the recent progresses on embryo production and freezing technologies might allow wider propagation of valuable genes in small ruminants populations and may be used for constitution of flocks without risks of disease. In addition, they can give a substantial contribution in preserving endangered breeds. The new era of gene editing might offer innovative perspectives in sheep breeding, but the application of such novel techniques implies involvement of specialized operators and is limited by relatively high costs for embryo manipulation and molecular biology analysis.
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Affiliation(s)
- Laura Falchi
- Sezione di Cl. Ostetrica e GinecologiaDipartimento di Medicina VeterinariaUniversità degli Studi di SassariSassariItaly
| | - Sergio Ledda
- Sezione di Cl. Ostetrica e GinecologiaDipartimento di Medicina VeterinariaUniversità degli Studi di SassariSassariItaly
| | - Maria T. Zedda
- Sezione di Cl. Ostetrica e GinecologiaDipartimento di Medicina VeterinariaUniversità degli Studi di SassariSassariItaly
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10
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Pomeroy KO, Comizzoli P, Rushing JS, Lersten IL, Nel-Themaat L. The ART of cryopreservation and its changing landscape. Fertil Steril 2022; 117:469-476. [DOI: 10.1016/j.fertnstert.2022.01.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 01/18/2022] [Indexed: 11/28/2022]
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Comizzoli P, Loi P, Patrizio P, Hubel A. Long-term storage of gametes and gonadal tissues at room temperatures: the end of the ice age? J Assist Reprod Genet 2022; 39:321-325. [PMID: 34984597 PMCID: PMC8956754 DOI: 10.1007/s10815-021-02392-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 12/29/2021] [Indexed: 02/03/2023] Open
Abstract
Long-term preservation of viable spermatozoa, eggs, embryos, and gonadal tissues of good quality is essential in human reproductive medicine and for the population management of livestock, laboratory, and wild species. Instead of using freezing temperatures, encouraging findings indicate that structures and functions of gametes or gonadal tissues can be suspended in trehalose glass after dehydration and then preserved at supra-zero temperatures. As a new era in fertility preservation and biobanking is about to start, the advantages, needs, and implications of germplasm storage at room temperatures must be carefully examined. Although very promising, the development of alternate biobanking strategies does not necessarily mean that the end of the "ice age" (cryopreservation) is near.
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Affiliation(s)
- Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, USA.
| | - Pasqualino Loi
- Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | | | - Allison Hubel
- Department of Mechanical Engineering, University of Minnesota, Minneapolis, MN, USA
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12
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A successful protocol for achieving anhydrobiosis of Gallus Gallus Domesticus spermatozoa while maintaining their fertility IN VIVO. Cryobiology 2021; 104:102-106. [PMID: 34780791 DOI: 10.1016/j.cryobiol.2021.11.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 10/01/2021] [Accepted: 11/08/2021] [Indexed: 11/20/2022]
Abstract
Lyophilization of avian semen is a new method for gene pool preservation. The goal of this study was to develop a protocol for the lyophilization of rooster semen with preserved fertility. Red Rhode Island rooster ejaculates (n = 20) were assessed by volume, motility, and concentration of spermatozoa. They were pooled and diluted 1:1 with a medium LCM-T20 containing trehalose (9.5 mM), exposed at 5 °C for 40 min and centrifuged, and then the supernatant was removed. Media LCM-T with trehalose (1.75 M) was added and exposed for 10 min. The semen was frozen in a thin layer in glass vials. Samples were lyophilized for 2 h at -150 … -50 °C. The water content of the samples after lyophilization was 6.1 ± 0.5% (CV 20%). The sample was rehydrated with a medium LCM-GA5 containing hyaluronic acid (40mg/100 mL media). The total motility of the spermatozoa was 1.0 ± 0.3%. From artificial insemination of virgin hens (n = 12) with rehydrated semen, one fertilized egg was obtained from eight laid eggs. All samples of perivitelline membranes of the obtained eggs had points of interaction with the spermatozoa (7-37 pcs/cm2), which confirmed the presence of viable rehydrated spermatozoa in the genital tract of the hen. To create a dry biobank for poultry, the first protocol for lyophilization of rooster semen was developed to ensure sperm fertility in vivo.
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Comizzoli P, Holt WV. Recent Progress in Spermatology Contributing to the Knowledge and Conservation of Rare and Endangered Species. Annu Rev Anim Biosci 2021; 10:469-490. [PMID: 34758275 DOI: 10.1146/annurev-animal-020420-040600] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
There is a remarkable diversity in the animal kingdom regarding mechanisms underlying the production, maturation, structure, and function of sperm cells. Spermatology studies contribute to the knowledge of species diversity and also provide information about individual or population fitness. Furthermore, this fundamental research is required before collected spermatozoa can be used for conservation breeding, including assisted reproduction and cryobanking. This article aims to (a) review the most recent knowledge on sperm morphology and function in wild animal species, (b) analyze how this knowledge can be used to save species in their natural habitat or ex situ, and (c) propose future scientific directions in wildlife spermatology that could positively impact animal conservation. Variations in sperm structure and performance within and between species have multiple origins and significance. This collective body of knowledge enables the design and implementation of conservation strategies and action plans that integrate several disciplines. Expected final online publication date for the Annual Review of Animal Biosciences, Volume 10 is February 2022. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Pierre Comizzoli
- Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC, USA;
| | - William V Holt
- Academic Unit of Reproductive and Developmental Medicine, University of Sheffield, United Kingdom;
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Freeze Drying as a Method of Long-Term Conservation of Mammalian Semen – A Review. ANNALS OF ANIMAL SCIENCE 2021. [DOI: 10.2478/aoas-2020-0122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
With the development of biotechnological methods that allow the manipulation and free exchange of genetic material, the methods for collecting and storing such material need to be improved. To date, freezing in liquid nitrogen has allowed the storage of cells and entire plant and animal tissues for practically unlimited times. However, alternatives are still being sought to eliminate the constant need to maintain samples at a low temperature. Lyophilization or freeze drying is an alternative to standard freezing procedures. The storage of samples (lyophilisates) does not require specialised equipment but only refines the preservation method itself. In the case of cells capable of movement e.g., sperm, they lose the ability to reach the oocyte in vivo and for in vitro fertilization (IVF) because of the lyophilization process. However, freeze-dried sperm may be used for in vitro fertilization by intracytoplasmic sperm injection (ICSI), based on the results obtained in cleavage, embryo development and the production of live born offspring after embryo transfer. Studies on the lyophilization of sperm have been performed on many animal species, both in the laboratory and in livestock. This conservation method is considered to create biobanks for genetically valuable and endangered species with the simultaneous application of ICSI. This review article aimed to present the issues of the freeze-drying process of mammalian semen and help find solutions that will improve this technique of the long-term preservation of biological material.
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Bossi RDL, Cabral M, Oliveira M, Lopes S, Hurtado R, Sampaio M, Geber S. Ultrastructural analysis of Lyophilized Human Spermatozoa. JBRA Assist Reprod 2021; 25:473-479. [PMID: 34286941 PMCID: PMC8312306 DOI: 10.5935/1518-0557.20210028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Objective: Lyophilization is potentially more practical and cost-effective alternative for sperm preservation. However, there are no studies that evaluate the ultrastructure of human spermatozoa after lyophilization. Therefore, the aim of our study was to evaluate the ultrasctructure of lyophilized spermatozoa using Transmission Electron Microscopy. Methods: From a total of 21 donated seminal samples, 30 aliquots were originated and divided into two aliquots so that one could have been submitted to cryopreservation/thaw and the other for lyophilization/rehydration. The liquefied aliquots were homogenized at room temperature. Samples assigned for cryopreservation were placed in straws and samples assigned for lyophilization were placed in the appropriate vials. Cryopreservation samples were placed at -30oC for 30 minutes subsequently for 30 minutes at vapour phase and then plunged into liquid nitrogen. Lately, were warmed in water bath at 37oC for 10 minutes followed by 10 minutes centrifugation. The pellet was resuspended and analysed in a Makler chamber. The semen vials assigned for lyophilization were loaded into a pre-fixed freeze-drying chamber. Following lyophilization, vials were removed from the freeze-drying chamber and kept at 4oC until rehydration. TEM was performed after rehydration and thawing. Sperm samples were fixed, rinsed in buffer, post fixed and dehydration was carried out in escalating concentrations of alcohol solution, acetone and then, embedding in Epon resin. Ultrathin sections were stained and examined in a Transmission Electron Microscope. Results: Analysis of sperm after freezing/thawing using Transmission Electron Microscopy showed lesions to the midpiece, with some mitochondria degeneration and random rupture of plasma membrane. In the head, we identified intact plasma membrane, nucleus and acrosome, as in the flagellum all main structures remained intact including the plasma membrane, the longitudinal columns of dense fibers and the semicircular fibers. Analysis by Transmission Electron Microscopy showed that spermatozoa heads had ruptured plasma membranes, absence of acrosomes, nuclei with heterogeneous and decompressed chromatin. Mitochondria were deteriorated in the midpiece. Longitudinal columns of dense fibers were absent in the flagellum. Axonemes, in cross-sections, were disrupted with disorganized structures. Conclusions: To our knowledge, our study demonstrated, for the first time, the structure of the human spermatozoa after lyophilization using Transmission Electron Microscopy. The use of a fixed lyophilization protocol with media containing cryoprotectants might explain the damage to the structures. More studies are necessary to improve the results of sperm lyophilization. In the future, the use of lyophilization of spermatozoa might reduce the costs of fertility preservation, since there will be no need for storage space and transportation is simpler.
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Affiliation(s)
- Renata de Lima Bossi
- Department of Obstetrics and Gynaecology of the Medical School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,ORIGEN, Center for Reproductive Medicine, Belo Horizonte, MG, Brazil
| | - Marcelo Cabral
- Department of Obstetrics and Gynaecology of the Medical School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Monica Oliveira
- Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Sávia Lopes
- Faculty of Pharmacy, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Rodrigo Hurtado
- Department of Obstetrics and Gynaecology of the Medical School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,ORIGEN, Center for Reproductive Medicine, Belo Horizonte, MG, Brazil
| | - Marcos Sampaio
- ORIGEN, Center for Reproductive Medicine, Belo Horizonte, MG, Brazil
| | - Selmo Geber
- Department of Obstetrics and Gynaecology of the Medical School, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.,ORIGEN, Center for Reproductive Medicine, Belo Horizonte, MG, Brazil
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Persichilli C, Senczuk G, Pasqualino L, Anzalone DA, Negrini R, Ajmone Marsan P, Colli L, Pilla F, Mastrangelo S. Genome-wide diversity of Pagliarola sheep residual population and its conservation implication. ITALIAN JOURNAL OF ANIMAL SCIENCE 2021. [DOI: 10.1080/1828051x.2021.1970033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Christian Persichilli
- Dipartimento di Agraria, Ambientale e Scienze dell’alimentazione, University of Molise, Campobasso, Italy
| | - Gabriele Senczuk
- Dipartimento di Agraria, Ambientale e Scienze dell’alimentazione, University of Molise, Campobasso, Italy
| | - Loi Pasqualino
- Facoltà di Veterinaria, University of Teramo, Campobasso, Italy
| | | | - Riccardo Negrini
- Department of Animal Science Food and Nutrition, Nutrigenomics and Proteomics Research Centre – PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Paolo Ajmone Marsan
- Department of Animal Science Food and Nutrition, Nutrigenomics and Proteomics Research Centre – PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Licia Colli
- Department of Animal Science Food and Nutrition, Nutrigenomics and Proteomics Research Centre – PRONUTRIGEN, and Biodiversity and Ancient DNA Research Centre, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Fabio Pilla
- Dipartimento di Agraria, Ambientale e Scienze dell’alimentazione, University of Molise, Campobasso, Italy
| | - Salvatore Mastrangelo
- Dipartimento di Scienze Agrarie, Alimentari e Forestali, University of Palermo, Palermo, Italy
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17
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Palazzese L, Anzalone DA, Turri F, Faieta M, Donnadio A, Pizzi F, Pittia P, Matsukawa K, Loi P. Whole genome integrity and enhanced developmental potential in ram freeze-dried spermatozoa at mild sub-zero temperature. Sci Rep 2020; 10:18873. [PMID: 33139842 PMCID: PMC7606492 DOI: 10.1038/s41598-020-76061-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/19/2020] [Indexed: 11/30/2022] Open
Abstract
Freeze-dried spermatozoa typically shows a reduction in fertility primarily due to the DNA damage resulting from the sublimation process. In order to minimize the physical/mechanical damage resulting from lyophilization, here we focused on the freezing phase, comparing two cooling protocols: (i) rapid-freezing, where ram sperm sample is directly plunged into liquid nitrogen (LN-group), as currently done; (ii) slow-freezing, where the sample is progressively cooled to − 50 °C (SF-group). The spermatozoa dried in both conditions were analysed to assess residual water content by Thermal Gravimetric Analysis (TGA) and DNA integrity using Sperm Chromatin Structure Assay (SCSA). TGA revealed more than 90% of water subtraction in both groups. A minor DNA damage, Double-Strand Break (DSB) in particular, characterized by a lower degree of abnormal chromatin structure (Alpha-T), was detected in the SF-group, comparing to the LN-one. In accordance with the structural and DNA integrity data, spermatozoa from SF-group had the best embryonic development rates, comparing to LN-group: cleaved embryos [42/100 (42%) versus 19/75 (25.3%), P < 0.05, SL and LN respectively] and blastocyst formation [7/100 (7%) versus 2/75 (2.7%), P < 0.05, SF and LN respectively]. This data represents a significant technological advancement for the development of lyophilization as a valuable and cheaper alternative to deep-freezing in LN for ram semen.
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Affiliation(s)
- Luca Palazzese
- Faculty of Veterinary Medicine, University of Teramo, Street R. Balzarini 1, Campus Coste Sant'Agostino, 64100, Teramo, Italy
| | - Debora Agata Anzalone
- Faculty of Veterinary Medicine, University of Teramo, Street R. Balzarini 1, Campus Coste Sant'Agostino, 64100, Teramo, Italy
| | - Federica Turri
- Institute of Agricultural Biology and Biotechnology (IBBA), National Research Council (CNR), 26900, Lodi, Italy
| | - Marco Faieta
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy
| | - Anna Donnadio
- Department of Pharmaceutical Sciences, University of Perugia, 06123, Perugia, Italy
| | - Flavia Pizzi
- Institute of Agricultural Biology and Biotechnology (IBBA), National Research Council (CNR), 26900, Lodi, Italy
| | - Paola Pittia
- Faculty of Bioscience and Technology for Food, Agriculture and Environment, University of Teramo, 64100, Teramo, Italy
| | - Kazutsugu Matsukawa
- Faculty of Agriculture and Marine Science, Kochi University, Kochi, 783-8502, Japan
| | - Pasqualino Loi
- Faculty of Veterinary Medicine, University of Teramo, Street R. Balzarini 1, Campus Coste Sant'Agostino, 64100, Teramo, Italy.
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18
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Ressaissi Y, Anzalone DA, Palazzese L, Czernik M, Loi P. The impaired development of sheep ICSI derived embryos is not related to centriole dysfunction. Theriogenology 2020; 159:7-12. [PMID: 33113447 DOI: 10.1016/j.theriogenology.2020.10.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/21/2020] [Accepted: 10/07/2020] [Indexed: 11/17/2022]
Abstract
While intracytoplasmic sperm injection (ICSI) is an asset in human Assisted Reproduction Technologies (ART), its outcomes, in terms of blastocyst, is still unacceptably low in ruminants. The picture typically found in ICSI derived bovine and ovine embryos is an asymmetry between a high activation rate, marked by a pronuclear development, and a low first cleavage rate. Abnormal centriole function has been indicated as a possible factor which undermines embryonic development following ICSI, especially when Freeze Dried spermatozoa (FD) are used. In order to verify the hypothesis that centriole dysfunction might be responsible for low ICSI outcomes in sheep, we have investigated micro-tubular dynamics, markedly aster nucleation, in fertilized sheep zygotes by ICSI with frozen/thawed (FT) and FD spermatozoa; In Vitro Fertilized (IVF) sheep oocytes were used as control. The spermatozoa aster nucleation was assessed at different time points following ICSI and IVF by immune-detection of α-tubulin. Pronuclear stage, syngamy and embryo development were assessed. No difference was noticed in the timing of aster nucleation and microtubule elongation in ICSI-FT derived embryos with control IVF ones, while a delay was recorded in ICSI-FD ones. The proportion of 2-pronuclear stage zygotes was similar in ICSI-FT and ICSI-FD (47% and 53%, respectively), both much lower comparing the IVF ones (73%). Likewise, syngamy was observed in a minority of both ICSI groups (28.5% vs 12.5% in ICSI-FT/FD respectively) comparing to IVF controls (50%), with a high number of zygotes blocked at the 2-pronuclear stage (71.5% vs 87.5% respectively). While no significant differences were noticed in the cleavage rate between ICSI-FD, ICSI-FT and IVF groups (31%, 34% and 44%) respectively, development to blastocyst stage was markedly compromised in both ICSI groups, especially with FD spermatozoa (10% in ICIS-FD and 19% in ICSI-FT vs 33% in IVF (P < 0.005, ICSI-FD vs IVF and P < 0.05, IVF vs ICSI-FT, respectively). Hence, here we have demonstrated that the reduced cleavage, and the ensuing impaired development to blastocysts stage of ICSI derived sheep embryos is not related to centriole dysfunction, as suggested by other authors. The major recorded problem is the lack of syngamy in ICSI derived zygotes, an issue that should be addressed in further studies to improve ICSI procedure in sheep embryos.
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Affiliation(s)
- Yosra Ressaissi
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Via R. Balzarini, Teramo, 1 - 64100, Italy
| | - Debora Agata Anzalone
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Via R. Balzarini, Teramo, 1 - 64100, Italy
| | - Luca Palazzese
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Via R. Balzarini, Teramo, 1 - 64100, Italy
| | - Marta Czernik
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Via R. Balzarini, Teramo, 1 - 64100, Italy
| | - Pasqualino Loi
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Via R. Balzarini, Teramo, 1 - 64100, Italy.
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19
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Morris LH, Maclellan LJ. Update on advanced semen-processing technologies and their application for in vitro embryo production in horses. Reprod Fertil Dev 2020; 31:1771-1777. [PMID: 31640845 DOI: 10.1071/rd19301] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 08/29/2019] [Indexed: 12/29/2022] Open
Abstract
The increased commercialisation of intracytoplasmic sperm injection (ICSI) in horses creates more opportunities to incorporate advanced reproductive technologies, such as sex-sorted, refrozen and lyophilised spermatozoa, into a breeding program. This paper reviews the status of these semen-handling technologies in light of their use in equine ICSI programs. Pregnancies have been achieved from each of these advanced technologies when combined with ICSI in horses, but refinements in the semen-handling processes underpinning these technologies are currently being explored to produce more reliable and practical improvements in the results from equine ICSI.
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Affiliation(s)
- Lee H Morris
- EquiBreed NZ, 399 Parklands Road, Te Awamutu 3879, New Zealand; and Corresponding author.
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20
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Saragusty J, Anzalone DA, Palazzese L, Arav A, Patrizio P, Gosálvez J, Loi P. Dry biobanking as a conservation tool in the Anthropocene. Theriogenology 2020; 150:130-138. [PMID: 31980207 DOI: 10.1016/j.theriogenology.2020.01.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 12/13/2022]
Abstract
Species are going extinct at an alarming rate, termed by some as the sixth mass extinction event in the history of Earth. Many are the causes for this but in the end, all converge to one entity - humans. Since we are the cause, we also hold the key to making the change. Any change, however, will take time, and for some species this could be too long. While working on possible solutions, we also have the responsibility to buy time for those species on the verge of extinction. Genome resource banks, in the form of cryobanks, where samples are maintained under liquid nitrogen, are already in existence but they come with a host of drawbacks. Biomimicry - innovation inspired by Nature, has been a huge source for ideas. Searching methods that Nature utilizes to preserve biological systems for extended periods of time, we realize that drying rather than freezing is the method of choice. We thus argue here in favor of preserving at least part of the samples from critically endangered species in dry biobanks, a much safer, cost-effective, biobanking approach.
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Affiliation(s)
- Joseph Saragusty
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy.
| | - Debora Agata Anzalone
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Luca Palazzese
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
| | - Amir Arav
- FertileSafe Ltd., Ness Ziona, Israel
| | - Pasquale Patrizio
- FertileSafe Ltd., Ness Ziona, Israel; Yale Fertility Center, New Haven, CT, USA
| | - Jaime Gosálvez
- Genetics Unit, Department of Biology, University Autónoma of Madrid, Catoblanco, Madrid, Spain
| | - Pasqualino Loi
- Laboratory of Embryology, Faculty of Veterinary Medicine, University of Teramo, Teramo, Italy
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21
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Mercati F, Domingo P, Pasquariello R, Dall'Aglio C, Di Michele A, Forti K, Cocci P, Boiti C, Gil L, Zerani M, Maranesi M. Effect of chelating and antioxidant agents on morphology and DNA methylation in freeze-drying rabbit (Oryctolagus cuniculus) spermatozoa. Reprod Domest Anim 2020; 55:29-37. [PMID: 31626708 DOI: 10.1111/rda.13577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/26/2019] [Accepted: 10/13/2019] [Indexed: 12/26/2022]
Abstract
Freeze-drying (FD) has been exhaustively tried in several mammalian species as an alternative technique to sperm cryopreservation, but few studies have been done in rabbits (Oryctolagus cuniculus). The main objective of this study was to compare the protective effect of various antioxidants added to EDTA medium on structural and functional components of FD rabbit spermatozoa and on their status of global DNA methylation. FD media used were composed of basic FD medium (10 mM Tris-HCl buffer and 50 mM NaCl) supplemented with either 50 mM EDTA alone (EDTA) or added with 105 µM of rosmarinic acid (RA, EDTA-RA) or 10 µM of melatonin (MLT, EDTA-MLT). The effect of each medium on the preservation of FD spermatozoon structure was evaluated with light and scanning electron microscopy (SEM). Global DNA methylation was quantified in all FD sperm samples as well as in fresh spermatozoa. Morphologically, fracture points were evidenced in the neck, mid and principal piece of the spermatozoon tail. No differences in spermatozoon fracture points were evidenced among FD treatments: intact spermatozoa were the largest (p < .01) category, whereas the most frequent (p < .01) injury was the neck fracture, resulting in tailless heads. At SEM, the head of spermatozoa showed a well-conserved shape and intact membrane in all treatments. DNA methylation status was the same in all FD treatments. In conclusion, supplementation of EDTA, EDTA-RA and EDTA-MLT during FD preserved rabbit sperm morphological integrity and methylation status as well. Therefore, the difficulty of getting viable offspring using FD semen is likely unrelated to the impact of the lyophilization process on DNA methylation and morphology of lyophilized spermatozoa.
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Affiliation(s)
- Francesca Mercati
- Dipartimento di Medicina Veterinaria, Università di Perugia, Perugia, Italy
| | - Paula Domingo
- Departamento de Patologìa Animal, Universidad de Zaragoza, Zaragoza, Spain
| | - Rolando Pasquariello
- Dipartimento di Scienze Agrarie e Ambientali - Produzione, Territorio, Agroenergia, Università di Milano, Milano, Italy
| | - Cecilia Dall'Aglio
- Dipartimento di Medicina Veterinaria, Università di Perugia, Perugia, Italy
| | | | - Katia Forti
- Istituto Zooprofilattico Sperimentale Umbria e Marche 'Togo Rosati' Perugia, Perugia, Italy
| | - Paolo Cocci
- Scuola di Bioscienze e Medicina Veterinaria, Università di Camerino, Camerino, Italy
| | - Cristiano Boiti
- Dipartimento di Medicina Veterinaria, Università di Perugia, Perugia, Italy
| | - Lidia Gil
- Departamento de Patologìa Animal, Universidad de Zaragoza, Zaragoza, Spain
| | - Massimo Zerani
- Dipartimento di Medicina Veterinaria, Università di Perugia, Perugia, Italy
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Lv C, Wu G, Hong Q, Quan G. Spermatozoa Cryopreservation: State of Art and Future in Small Ruminants. Biopreserv Biobank 2019; 17:171-182. [DOI: 10.1089/bio.2018.0113] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Chunrong Lv
- Yunnan Animal Science and Veterinary Institute, Kunming, China
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
- Yunnan Provincial Meat Caprine Engineering Research Center, Kunming, China
| | - Guoquan Wu
- Yunnan Animal Science and Veterinary Institute, Kunming, China
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
- Yunnan Provincial Meat Caprine Engineering Research Center, Kunming, China
| | - Qionghua Hong
- Yunnan Animal Science and Veterinary Institute, Kunming, China
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
- Yunnan Provincial Meat Caprine Engineering Research Center, Kunming, China
| | - Guobo Quan
- Yunnan Animal Science and Veterinary Institute, Kunming, China
- Yunnan Provincial Engineering Laboratory of Animal Genetic Resource Conservation and Germplasm Enhancement, Kunming, China
- Yunnan Provincial Meat Caprine Engineering Research Center, Kunming, China
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Exploring dry storage as an alternative biobanking strategy inspired by Nature. Theriogenology 2019; 126:17-27. [DOI: 10.1016/j.theriogenology.2018.11.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Revised: 11/20/2018] [Accepted: 11/25/2018] [Indexed: 12/13/2022]
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Kusakabe H. Production of mouse fetuses using spermatozoa exposed temporarily to high temperature or continuously to room temperature after freeze-drying in Na +-free/K +-rich EGTA buffer. Cryobiology 2019; 87:105-109. [PMID: 30682339 DOI: 10.1016/j.cryobiol.2019.01.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2018] [Revised: 01/21/2019] [Accepted: 01/21/2019] [Indexed: 12/13/2022]
Abstract
Present study aimed to determine to what extent freeze-dried spermatozoa were able to withstand high-temperature conditions: transient increase in storage temperature and long-term exposure to room temperature. Mouse spermatozoa were freeze-dried in EGTA/Tris-HCl buffered solution alkalinized using KOH (K-ETBS, pH 7.7), and then stored for up to 7 months at 4 °C or 25 °C. After 2 months' storage, some of the 4°C-stored spermatozoa were exposed to 40 °C for 1 week or 1 month, then again stored at 4 °C for the remaining storage period. Following storage, rehydrated spermatozoa were injected into mouse oocytes. The resulting zygotes were assessed for chromosome damage, in vitro development up to the blastocyst stage, and post-implantation development to normal fetuses on day 18 of gestation. In storage at 4 °C, one-week exposure to 40 °C had no adverse effect on the chromosome integrity and developmental competence compared to non-exposure to 40 °C (continuous storage at 4 °C). In contrast, one-month exposure to 40 °C caused an increasing level of chromosome damage (36%, P < 0.05) and reduced frequencies of blastocysts (54%, P < 0.05) and normal fetuses (36%, P < 0.05) compared to the frequencies obtained by continuous storage at 4 °C (15%, 82% and 52%, respectively). Storage at 25 °C resulted in accumulation of chromosome damage (27%, P < 0.05), leading to decreased blastocyst formation (63%, P < 0.05). But, the frequency of normal fetus (44%) was not significantly different from that obtained by continuous storage at 4 °C. Consequently, mouse spermatozoa freeze-dried in K-ETBS withstood temporary exposure to 40 °C for 1 week. Chromosome damage accumulated in spermatozoa during storage at 25 °C.
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Affiliation(s)
- Hirokazu Kusakabe
- Department of Biological Sciences, Asahikawa Medical University, 2-1-1-1 Midorigaoka-higashi, Asahikawa, 078-8510, Japan.
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25
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Palazzese L, Gosálvez J, Anzalone DA, Loi P, Saragusty J. DNA fragmentation in epididymal freeze-dried ram spermatozoa impairs embryo development. J Reprod Dev 2018; 64:393-400. [PMID: 29973438 PMCID: PMC6189572 DOI: 10.1262/jrd.2018-033] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 06/14/2018] [Indexed: 12/20/2022] Open
Abstract
Sperm freeze-drying is a revolutionary technique, which has been gaining prominence in recent years. The first related significant result was Wakayama and Yanagimachi's demonstration in 1998 of the birth of healthy mouse offspring by Intracytoplasmic Sperm Injection (ICSI), using epididymal freeze-dried spermatozoa. Mouse, rat, and hamster models were the first small mammals born from lyophilized epididymal spermatozoa, whereas most other studies in this field used ejaculated spermatozoa. In this work, we applied this technique to ram epididymal spermatozoa, checking the correlation between DNA integrity and embryo development following ICSI. To do this, epididymal sperm from four rams was lyophilized in a trehalose, glucose, KCl, HEPES, and Trolox media. To evaluate DNA damage and fragmentation after rehydration, samples were processed for Sperm Chromatin Dispersion test (SCD), Two-Tailed Comet Assay, and were used for ICSI. Ram #2 had a higher rate of spermatozoa with intact DNA compared with rams #1, #3, and #4 (28% vs. 3.8%, 2.8%, and 5%, respectively) and the lowest rate of Single-Strand Breaks (SSBs) (70% vs. 95.9%, 92.6%, and 93% respectively). Ram #3 had a higher level of Double-Strand Breaks (DSBs) compared to Ram #1 (4.6% vs. 0.33%, respectively). Embryo development to the blastocyst stage following ICSI was only reached from rams whose sperm had higher level of intact DNA - Rams #2 and #4 (6%, 5/147 and 6.3%, 4/64, respectively). Definitively, the impact of sperm DNA damage on embryonic development depends on the balance between sperm DNA fragmentation extent, fragmentation type (SSBs or DSBs), and the oocyte's repair capacity.
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Affiliation(s)
- Luca Palazzese
- Faculty of Veterinary Medicine, University of Teramo, Teramo 64100, Italy
| | - Jaime Gosálvez
- Genetics Unit, Department of Biology, University Autónoma of Madrid, Catoblanco, 28049 Madrid, Spain
| | - Debora A Anzalone
- Faculty of Veterinary Medicine, University of Teramo, Teramo 64100, Italy
| | - Pasqualino Loi
- Faculty of Veterinary Medicine, University of Teramo, Teramo 64100, Italy
| | - Joseph Saragusty
- Faculty of Veterinary Medicine, University of Teramo, Teramo 64100, Italy
- Department of Reproduction Management, Leibniz Institute for Zoo and Wildlife Research, Berlin 10315, Germany
- Present: Faculty of Veterinary Medicine, University of Teramo, Teramo 64100, Italy
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Restrepo G, Varela E, Duque JE, Gómez JE, Rojas M. Freezing, Vitrification, and Freeze-Drying of Equine Spermatozoa: Impact on Mitochondrial Membrane Potential, Lipid Peroxidation, and DNA Integrity. J Equine Vet Sci 2018; 72:8-15. [PMID: 30929788 DOI: 10.1016/j.jevs.2018.10.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 10/02/2018] [Accepted: 10/05/2018] [Indexed: 12/14/2022]
Abstract
Maintaining the integrity of equine sperm subjected to preservation protocols is essential for the successful development of assisted reproduction procedures. The aim of this study was to assess the mitochondrial membrane potential, lipid peroxidation, and DNA integrity of equine sperm subjected to freezing, vitrification, and freeze-drying. Eight ejaculates obtained from four Colombian Creole horses were subjected to programmable freezing, vitrification, and freeze-drying. After thawing or rehydration, sperm motility and kinetics were assessed through a CASA system. The mitochondrial membrane potential (ΔΨM), lipid peroxidation (LPO), and DNA fragmentation index (DFI) of the spermatozoa were assessed by flow cytometry using the DiOC6 (3), C11-Bodipy 581/591, and propidium iodide (PI) fluorescent dyes. The statistical analysis was conducted via generalized linear models, mean comparisons via the Duncan test, and a principal component analysis. A higher rate of spermatozoa with a high ΔΨM was found for freeze-drying (40.26 ± 7.79%) compared with freezing (21.82 ± 5.38%) and vitrification (5.32 ± 1.17%) (P < .05). Likewise, a higher rate of nonperoxidized viable spermatozoa (Bodipy-/PI-) was found for freeze-drying (35.98 ± 7.01%) in relation to frozen (10.34 ± 2.69%) and vitrified (7.07 ± 2.00%) sperm (P < .05). The DFI of vitrified spermatozoa (0.12 ± 0.04%) was higher when compared with the frozen (0.03 ± 0.01%) and freeze-dried (0.02 ± 0.01%) samples (P < .05). The researchers conclude that vitrification generates greater sperm alterations than freeze-drying and freezing, whereas freeze-drying produces lower LPO and higher ΔΨM for equine spermatozoa.
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Affiliation(s)
- Giovanni Restrepo
- Department of Animal Sciences, Faculty of Agricultural Sciences, Universidad Nacional de Colombia, Medellín, Colombia.
| | - Elizabeth Varela
- Faculty of Agricultural Sciences, Politécnico Colombiano Jaime Isaza Cadavid, Medellín, Colombia
| | - Juan Esteban Duque
- Faculty of Agricultural Sciences, Politécnico Colombiano Jaime Isaza Cadavid, Medellín, Colombia
| | - Jorge Enrique Gómez
- Faculty of Agricultural Sciences, Politécnico Colombiano Jaime Isaza Cadavid, Medellín, Colombia
| | - Mauricio Rojas
- Institute of Medical Research, Universidad de Antioquia, Medellín, Colombia
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