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Raju R, Bryant SJ, Wilkinson BL, Bryant G. The need for novel cryoprotectants and cryopreservation protocols: Insights into the importance of biophysical investigation and cell permeability. Biochim Biophys Acta Gen Subj 2020; 1865:129749. [PMID: 32980500 DOI: 10.1016/j.bbagen.2020.129749] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 09/16/2020] [Accepted: 09/22/2020] [Indexed: 12/31/2022]
Abstract
BACKGROUND Cryopreservation is a key method of preservation of biological material for both medical treatments and conservation of endangered species. In order to avoid cellular damage, cryopreservation relies on the addition of a suitable cryoprotective agent (CPA). However, the toxicity of CPAs is a serious concern and often requires rapid removal on thawing which is time consuming and expensive. SCOPE OF REVIEW The principles of Cryopreservation are reviewed and recent advances in cryopreservation methods and new CPAs are described. The importance of understanding key biophysical properties to assess the cryoprotective potential of new non-toxic compounds is discussed. MAJOR CONCLUSIONS Knowing the biophysical properties of a particular cell type is crucial for developing new cryopreservation protocols. Similarly, understanding how potential CPAs interact with cells is key for optimising protocols. For example, cells with a large osmotically inactive volume may require slower addition of CPAs. Similarly, a cell with low permeability may require a longer incubation time with the CPA to allow adequate penetration. Measuring these properties allows efficient optimisation of cryopreservation protocols. GENERAL SIGNIFICANCE Understanding the interplay between cells and biophysical properties is important not just for developing new, and better optimised, cryopreservation protocols, but also for broader research into topics such as dehydration and desiccation tolerance, chilling and heat stress, as well as membrane structure and function.
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Affiliation(s)
- Rekha Raju
- School of Science, RMIT University, Melbourne, Victoria 3001, Australia
| | - Saffron J Bryant
- School of Science, RMIT University, Melbourne, Victoria 3001, Australia.
| | - Brendan L Wilkinson
- School of Science and Technology, University of New England, Armidale, NSW 2351, Australia
| | - Gary Bryant
- School of Science, RMIT University, Melbourne, Victoria 3001, Australia.
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Mehdipour M, Daghigh Kia H, Martínez-Pastor F. Poloxamer 188 exerts a cryoprotective effect on rooster sperm and allows decreasing glycerol concentration in the freezing extender. Poult Sci 2020; 99:6212-6220. [PMID: 33142539 PMCID: PMC7647912 DOI: 10.1016/j.psj.2020.08.041] [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: 04/23/2020] [Revised: 07/16/2020] [Accepted: 08/12/2020] [Indexed: 01/27/2023] Open
Abstract
Glycerol is the most widely used cryoprotectant for rooster sperm because it declines the mechanical damage to sperm during the freezing process. Despite its high molecular weight and viscosity, which may be cytotoxic, glycerol can cause damage to cells during the cryopreservation process, resulting in less fertility. Poloxamer 188 (P188) is an embryo cryopreservation supplement effective in many species and also for cell lines and plant cells. We tested the suitability of P188 in the cryopreservation of rooster sperm, considering post-thawing motility, abnormalities, membrane functionality (hypo-osmotic swelling test), mitochondrial activity, viability, apoptosis status, reactive oxygen species production, and ATP content after thawing and the fertility and hatchability after AI. We carried out a factorial experiment with glycerol concentrations of 2% glycerol (G2) and 8% glycerol (G8) and P188 concentrations of 0% (P0), 0.1% (P0.1), 0.5% (P0.5), and 1% (P1) as fixed effects, with replicate (seven) as a random effect. Interactions between glycerol and P188 were found, with G2P1 yielding higher quality and fertility. G8P0.5 yielded better in most parameters, however, not reaching G2P1. G2P1 showed significantly higher results for total and progressive motility, kinetic parameters (average path velocity, straight-line velocity, and linearity), membrane functionality, viability, mitochondrial activity, and ATP content and lower apoptosis, dead sperm, and reactive oxygen species production. G2P1 resulted in the highest percentages of fertilized and hatched eggs, with no effects in the hatched eggs ratio. Interestingly, G2 was less efficient in many parameters than G8 when combined with P0 and P0.1, being equivalent to G8 with P0.5 and superior to any G8 treatment as G2P1. In conclusion, P188 could improve rooster semen cryopreservation and allow reduction of glycerol in extenders, with a consequent impact in the poultry industry.
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Affiliation(s)
- Mahdieh Mehdipour
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran
| | - Hossein Daghigh Kia
- Department of Animal Science, College of Agriculture, University of Tabriz, Tabriz, Iran.
| | - Felipe Martínez-Pastor
- Institute of Animal Health and Cattle Development (INDEGSAL) and Department of Molecular Biology (Cell Biology), University of León, León 24071, Spain
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Ferrer MS, Canisso IF, Ellerbrock RE, Podico G, Lister BN, Hurley DJ, Kline K, Palomares RA. Optimization of cryopreservation protocols for cooled-transported stallion semen. Anim Reprod Sci 2020; 221:106581. [PMID: 32891911 DOI: 10.1016/j.anireprosci.2020.106581] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 08/14/2020] [Accepted: 08/14/2020] [Indexed: 10/23/2022]
Abstract
Freezing cooled-transported semen allows veterinarians and breeders to collect and process the semen of stallions on farm, and then ship the semen to a semen freezing center. There, however, is a lack of standardization of shipping and freezing protocols. The objectives were to optimize and simplify protocols to freeze cooled-shipped semen. In Experiment 1, cooled-transported semen was centrifuged at room temperature or 5 °C before freezing. Sperm variables (motility, membrane integrity, acrosome integrity, membrane fluidity) were evaluated before and after freezing. Centrifugation temperature had no effect on post-thaw semen quality. In Experiment 2, cooled-transported semen was centrifuged at room temperature and cryopreserved in three semen freezing extenders. With use of the improved modified French formula, there was less post-thaw total and progressive motility compared with use of Botucrio or the improved lactose-EDTA formula (P<0.0001). Semen cryopreserved in the improved modified French formula also had a lesser percentage of sperm with intact membranes compared with lactose-EDTA, and a greater percentage of sperm with capacitation-like changes compared with Botucrio (P<0.0001). In Experiment 3, semen diluted in each extender was frozen conventionally or placed directly in a -80 °C ultra-freezer. Freezing in the ultra-freezer resulted in a lesser post-thaw sperm motility, but not membrane and acrosome integrity and capacitation-like changes. In conclusion, centrifugation and addition of freezing extender to cooled transported semen can be performed at room temperature or 5 °C. The Botucrio and lactose-EDTA formula are recommended for conventional cryopreservation of cooled-transported stallion semen as compared with the modified French formula.
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Affiliation(s)
- M S Ferrer
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, USA.
| | - I F Canisso
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana, IL, USA
| | - R E Ellerbrock
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - G Podico
- Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois, Urbana, IL, USA
| | - B N Lister
- Department of Large Animal Medicine, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - D J Hurley
- Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
| | - K Kline
- Department of Animal Sciences, College of Agricultural, Environment and Nutritional Sciences, Urbana, IL, USA
| | - R A Palomares
- Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
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Gororo E, Makuza SM, Chidzwondo F, Chatiza FP. Variation in sperm cryosurvival is not modified by replacing the cryoprotectant glycerol with ethylene glycol in bulls. Reprod Domest Anim 2020; 55:1210-1218. [PMID: 32628298 DOI: 10.1111/rda.13766] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Accepted: 06/29/2020] [Indexed: 01/17/2023]
Abstract
Breed and sire differences in sperm cryosurvival have been noted, with negative implications for sperm cryobanking and assisted reproduction programmes. This study hypothesized that these differences could be modified by using lower molecular weight cryoprotectants. Therefore, the effect of replacing glycerol (GLY) with ethylene glycol (EG) on differential cryosurvival of semen from two Sanga cattle breeds (Mashona vs. Tuli) was determined. Three to five ejaculates were collected from each of ten bulls (3-8 years) by electro-ejaculation, diluted in three Tris-egg yolk extenders (Triladyl® , 7% GLY-based and 7% EG-based) and evaluated for sperm motility, viability and morphology at three time periods (fresh - 0 hr, pre-freeze - 4 hr and post-thaw). Tuli bulls produced larger (11.8 ± 0.31 ml vs. 8.5 ± 0.38 ml) and more concentrated ejaculates of lower fresh semen quality. Breeds differed across time for motility and morphology, but not viability. Mashona bull semen had significantly higher motility and normal morphology values at each sampling time. Bulls classified as poor freezers had lower concentration (0.70 ± 0.09 × 109 sperm/ml vs. 1.37 ± 0.10 × 109 sperm/ml), sperm motility index (SMI, 35.0 ± 3.4 % vs. 67.8 ± 2.1 %) and viability (69.7 ± 1.1 % vs. 75.7 ± 1.0 %) compared to good freezers. Maintenance of semen quality by GLY and EG did not differ between breeds, poor and good freezers, or age groups. The interaction breed by extender across time did not reach statistical significance for all variables. The study revealed that bull and breed variation in sperm quality and cryosurvival is not modified by replacing GLY with EG, suggesting that cryostress tolerance of sperm may be under control of mechanisms other than differential response to GLY cytotoxicity.
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Affiliation(s)
- Eddington Gororo
- Germplasm and Reproductive Technology Laboratory, Department of Animal Production & Technology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | - Stanley Marshal Makuza
- School of Agricultural Sciences & Technology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
| | | | - Fungayi Primrose Chatiza
- Germplasm and Reproductive Technology Laboratory, Department of Animal Production & Technology, Chinhoyi University of Technology, Chinhoyi, Zimbabwe
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Effects of different equilibration times at 5 °C on boar sperm cryotolerance. Anim Reprod Sci 2020; 219:106547. [PMID: 32828392 DOI: 10.1016/j.anireprosci.2020.106547] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 07/09/2020] [Accepted: 07/10/2020] [Indexed: 12/18/2022]
Abstract
Equilibration time (ET) is the period during which sperm cells are in contact with cooling/freezing media components at a temperature of 5 °C, providing a proper osmotic balance between the intra- and extra-cellular milieu. The present study aimed to determine the ET (0, 2, and 4 h) that results in greater post-thaw sperm quality and functions. Based on the post-thaw sperm membrane integrity and motility ratios, 20 ejaculates collected from five boars were classified as having good (GFE, n = 5) or poor (PFE, n = 15) freezing capacity. Ratios of post-thaw sperm with intact plasma membrane and acrosome were similar between ET (0 h: 37.02 % ± 2.85 %; 2 h: 34.59 % ± 7.12 %; 4 h: 37.87 % ± 4.44 %) in GFE samples. In PFE, ratios of sperm with intact plasma membrane and acrosome at post-thaw were greater (P < 0.05) after an ET of 2 h than after an ET of 0 h (2 h: 26.16 % ± 1.54 % and 0 h: 16.74 % ± 1.59 %). Also, ratios of post-thaw sperm with relatively lesser membrane lipids disorder were greater (P < 0.05) after an ET of 2 h than for other ET in both GFE (2 h: 21.97 % ± 4.24 % and 0 h: 16.63 % ± 2.38 %) and PFE (2 h: 16.65 % ± 1.40 % and 0 h: 13.23 % ± 1.25 %) samples. In conclusion, an ET of 2 h results in greater sperm cryotolerance in both GFE and PFE samples, which suggests that modifying the freezing protocol lead to an increase post-thaw sperm function and survival.
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Martínez-Fresneda L, O'Brien E, López Sebastián A, Velázquez R, Toledano-Díaz A, Tesfaye D, Schellander K, García-Vázquez FA, Santiago-Moreno J. In vitro supplementation of testosterone or prolactin affects spermatozoa freezability in small ruminants. Domest Anim Endocrinol 2020; 72:106372. [PMID: 31431310 DOI: 10.1016/j.domaniend.2019.06.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 05/29/2019] [Accepted: 06/29/2019] [Indexed: 12/15/2022]
Abstract
In small ruminants, testosterone and prolactin plasma concentrations show circannual fluctuations as an adaptation mechanism to their seasonal breeding behavior. Sperm resistance to the freezing-thawing process shows seasonal fluctuation throughout the year, with lower sperm freezability at the beginning of the breeding season when prolactin and testosterone levels reach their maximum concentration. Nevertheless, whether these hormones directly affect post-thaw sperm quality parameters is still unclear. The objective was to study the effect of testosterone or prolactin added in vitro on sperm freezability in domestic ram (Ovis aries) and buck (Capra hircus). Sperm samples were incubated for 1 h with a range of testosterone (0, 2, 4, or 6 ng/mL; Exp. 1) or prolactin (0, 20, 100, 200, or 400 ng/mL; Exp. 2) concentrations. Samples were cryopreserved by slow freezing in straws at 0 h and after 1 h incubation. Sperm viability, acrosome integrity, motility, and kinetic parameters were assessed at 0 and 1 h in fresh and frozen-thawed samples. Results showed no hormone effect in fresh sperm, whereas these hormones affected post-thaw sperm parameters. In Exp. 1, in vitro incubation with testosterone decreased the post-thaw acrosome integrity of ram sperm (from 68.1 ± 6.3% to 49.6 ± 3.9%; P < 0.05). In Exp. 2, in vitro incubation with prolactin decreased the post-thaw acrosome integrity of ram (from 78.2 ± 3.4% to 66.3 ± 3.5%; P < 0.05) and buck sperm (from 81.7 ± 2.5% to 67.6 ± 3.5%; P < 0.05). Moreover, prolactin increased the post-thaw amplitude of lateral head displacement in ram sperm (from 3.3 ± 0.1 μm to 3.8 ± 0.2 μm; P < 0.05). In conclusion, either testosterone or prolactin added in vitro decreased the post-thaw acrosome integrity of ram and buck sperm. This suggests a destabilization process that could be decreasing sperm freezability when physiological levels of these hormones are high in vivo.
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Affiliation(s)
- L Martínez-Fresneda
- Department of Animal Reproduction, Spanish National Institute for Agricultural and Food Research and Technology (INIA), 28040 Madrid, Spain; Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, 53115 Bonn, Germany; Department of Physiology, Faculty of Veterinary Science, International Excellence Campus for Higher Education and Research 'Campus Mare Nostrum', 30100 Murcia, Spain
| | - E O'Brien
- Department of Animal Reproduction, Spanish National Institute for Agricultural and Food Research and Technology (INIA), 28040 Madrid, Spain
| | - A López Sebastián
- Department of Animal Reproduction, Spanish National Institute for Agricultural and Food Research and Technology (INIA), 28040 Madrid, Spain
| | - R Velázquez
- Department of Animal Reproduction, Spanish National Institute for Agricultural and Food Research and Technology (INIA), 28040 Madrid, Spain
| | - A Toledano-Díaz
- Department of Animal Reproduction, Spanish National Institute for Agricultural and Food Research and Technology (INIA), 28040 Madrid, Spain
| | - D Tesfaye
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, 53115 Bonn, Germany
| | - K Schellander
- Department of Animal Breeding and Husbandry, Institute of Animal Science, University of Bonn, 53115 Bonn, Germany
| | - F A García-Vázquez
- Department of Physiology, Faculty of Veterinary Science, International Excellence Campus for Higher Education and Research 'Campus Mare Nostrum', 30100 Murcia, Spain; Biomedical Research Institute of Murcia (IMIB-Arrixaca), University of Murcia, 30120 Murcia, Spain
| | - J Santiago-Moreno
- Department of Animal Reproduction, Spanish National Institute for Agricultural and Food Research and Technology (INIA), 28040 Madrid, Spain.
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57
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Saleh R, Elsuity M, Henkel R, Agarwal A. High levels of oxidation–reduction potential in frozen‐thawed human semen are significantly correlated with poor post‐thaw sperm quality. Andrologia 2020; 52:e13608. [DOI: 10.1111/and.13608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/12/2020] [Accepted: 03/27/2020] [Indexed: 02/03/2023] Open
Affiliation(s)
- Ramadan Saleh
- Department of Dermatology, Venereology and Andrology Faculty of Medicine Sohag University Sohag Egypt
- Ajyal IVF Center Ajyal Hospital Sohag Egypt
| | - Mohamed Elsuity
- Department of Dermatology, Venereology and Andrology Faculty of Medicine Sohag University Sohag Egypt
| | - Ralf Henkel
- Department of Medical Bioscience University of the Western Cape Bellville South Africa
- Department of Urology American Center for Reproductive Medicine Cleveland Clinic Cleveland OH USA
| | - Ashok Agarwal
- Department of Urology American Center for Reproductive Medicine Cleveland Clinic Cleveland OH USA
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58
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Rakha BA, Ansari MS, Akhter S, Akhter A, Blesbois E, Santiago-Moreno J. Effect of dimethylformamide on sperm quality and fertilizing ability of Indian red jungle fowl (Gallus gallus murghi). Theriogenology 2020; 149:55-61. [PMID: 32244129 DOI: 10.1016/j.theriogenology.2020.03.023] [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: 11/11/2019] [Revised: 02/21/2020] [Accepted: 03/12/2020] [Indexed: 11/30/2022]
Abstract
The present study investigates the efficacy of dimehtlyformamide (DMF) as a permeable cryoprotectant and its effect on quality and fertility of Indian red jungle fowl sperm. Semen was collected from eight mature roosters, pooled, divided into five aliquots and diluted with red fowl extender having DMF (0%, 4%, 6%, 8% and 10%). Diluted semen samples were cooled from 37 °C to 4 °C, 20% glycerol added to control (0% DMF), equilibrated for 10 min and filled in 0.5 mL French straws, kept over liquid nitrogen vapors for 10 min and plunged into liquid nitrogen. Sperm motility, plasma membrane functionality, viability and acrosome integrity were assessed at post dilution, cooling, equilibration and freeze-thawing stage of cryopreservation. Cryopreservation stages had negative effects (P < 0.05) on semen quality parameters. Percentages of sperm motility, plasma membrane functionality, viability and acrosome integrity were recorded highest in extender having 8% DMF at post-dilution, cooling, equilibration and freeze-thawing stage. Fertility results after artificial insemination were recorded higher (P < 0.05) with 8% DMF compared to 20% glycerol. Dimehtlyformamide (8%) in red fowl extender improves the post thaw semen quality and fertility in Indian red jungle fowl and can be used effectively to avoid the contraceptive effects of glycerol.
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Affiliation(s)
- B A Rakha
- Department of Wildlife Management, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46300, Pakistan.
| | - M S Ansari
- Department of Zoology, Division of Science and Technology, University of Education, College Road, Township, Lahore, 54000, Pakistan
| | - S Akhter
- Department of Zoology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46300, Pakistan
| | - A Akhter
- Department of Wildlife Management, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, 46300, Pakistan
| | - E Blesbois
- INRA, UMR85 Physiologie de la Reproduction et des Comportements, F-37380, Nouzilly, 37380, Nouzilly, France
| | - Julian Santiago-Moreno
- Department of Animal Reproduction, INIA, Avda. Puerta de Hierro Km 5,9, 28040, Madrid, Spain
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Huang WJ, Zhang D, Hong ZW, Chen ZB, Dong LH, Zhang Y, Chen GY, Liu Y, Yao B. Sequential interval micro-droplet loading in closed hemi-straw carrier system: A convenient and efficient method for ultra-rapid cryopreservation in extreme oligozoospermia. Cryobiology 2020; 93:75-83. [PMID: 32057735 DOI: 10.1016/j.cryobiol.2020.02.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 02/09/2020] [Accepted: 02/09/2020] [Indexed: 11/28/2022]
Abstract
Cryopreservation of human spermatozoa with low concentration while maintaining adequate post-thawing motility remains a major challenge for male fertility preservation. A convenient and efficient ultra-rapid freezing method for small amounts of human spermatozoa in a closed Hemi-Straw carrier system (CHS) was developed. Spermatozoa from 60 healthy men were involved in a parameter refining test and another 15 extreme oligozoospermic specimens were assigned to a verification test. A commercialized sperm freezing medium, Quinn's Advantage® Sperm Freeze medium (glycerol and sucrose as the cryoprotective agent) was used in the study. The results showed that the highest recovery rates would be obtained via the method of 2 μl single droplet sequential interval loading, by placing the straw at 1 cm above the liquid nitrogen (LN2) surface for 60 s during freezing and 2 cm above the LN2 for 2 min during thawing. This method was applied in cryopreservation for the normozoospermic specimens and compared with a conventional slow freezing method. The results were better than those in the control group in the total motility recovery rate (77.8 ± 11.2% vs 56.6 ± 11.9%, P < 0.01), progressive motility recovery rate (77.6 ± 13.2% vs 47.7 ± 14.6%, P < 0.01), 24 h survival index (60.9 ± 13.4% vs 42.1 ± 14.1%, P < 0.01) and the sperm DNA fragment index (4.2 ± 3.7% vs 5.8 ± 3.7%, P = 0.126). This method was applied to the oligozoospermic specimens. Motile spermatozoa could be found in 12 of 15 cases in the ultra-rapid freezing group, while only in 7 cases in control group. The results indicated that this freezing method was simple, convenient and bio-safe for cryopreservation of severe oligozoospermic specimens.
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Affiliation(s)
- Wu-Jian Huang
- Jinling Hospital Department Reproductive Medical Center, Southern Medical University, Nanjing, 210002, China; Center for Reproductive Medicine, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China
| | - Duo Zhang
- Research Center for Molecular Diagnosis of Genetic Diseases, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China
| | - Zhi-Wei Hong
- Shengli Clinical Medical College of Fujian Medical University, Fuzhou, 350000, China; Department of Urology, Fujian Provincial Hospital, Fuzhou, 350000, China
| | - Zhi-Biao Chen
- Center for Reproductive Medicine, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China
| | - Li-Hong Dong
- Research Center for Molecular Diagnosis of Genetic Diseases, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China
| | - Yan Zhang
- Research Center for Molecular Diagnosis of Genetic Diseases, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China
| | - Guo-Yong Chen
- Center for Reproductive Medicine, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China
| | - Yun Liu
- Center for Reproductive Medicine, The 900th Hospital of Joint Logistic Support Force, PLA, Fuzhou, 350025, China.
| | - Bing Yao
- Jinling Hospital Department Reproductive Medical Center, Southern Medical University, Nanjing, 210002, China.
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Barbosa BDS, Dos Santos FA, do Macêdo LB, Izzo RG, Fernandes DP, Praxedes ÉA, Silva AR, Bezerra MB. Effect of supplementation of Aloe vera extracts in cold storage media and cryopreservation of domestic cat epididymal spermatozoa. Anim Reprod 2020; 17:e20190067. [PMID: 32368279 PMCID: PMC7189537 DOI: 10.21451/1984-3143-ar2019-0067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This study evaluated the effect of the extract of Aloe vera at concentrations of 10% and 20% on the cryopreservation of sperm from the epididymis of domestic cats. Epididymal spermatozoa were recovered using the flotation technique and used in the treatments: control (TRIS-egg yolk at 20%), T10% (TRIS plus 10% of A. vera extract), and T20% (TRIS plus 20% of A. vera extract). The spermatozoa were subjected to 4ºC for 60 minutes, followed by 20 minutes in nitrogen vapors, and stored in a cryogenic cylinder. The samples were thawed at 37°C for 30 seconds. The sperm motility decreased (P<0.05) after thawing in the three treatments. Only the spermatozoa in the control treatment maintained post-thawing vigor. The viability of spermatozoa decreased in the treatments with A. vera (P<0.05). According to the hypoosmotic test, all treatments maintained the sperm membrane functionality (P>0.05) during freezing; however, after thawing, it decreased (P<0.05) in the T10% and T20% treatments. The morphology and chromatin condensation of spermatozoa did not differ, regardless of the treatments and time of evaluation (P>0.05). The effect of the crude A. vera extract was not satisfactory on the cryopreservation of epididymal spermatozoa of domestic cats after thawing; although the motility of spermatozoa was similar to that found with the use of egg yolk, and it presented maintenance of the chromatin integrity. However, it is necessary to understand the action of the substances present in A. vera with the feline spermatozoa, well as the standardization and adjustment of physicochemical characteristics aiming at the future application of the vegetal extract.
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61
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Engel KM, Jakop U, Müller K, Grunewald S, Paasch U, Schiller J. MALDI MS Analysis to Investigate the Lipid Composition of Sperm. CURR ANAL CHEM 2020. [DOI: 10.2174/1573411014666181030123256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Background:
The sperm plasma membrane meets the requirements of sperm transit
through the female genital tract and subsequent fertilization. Commonly, the (phospho)lipid composition
of sperm is characterized by tremendous amounts of highly unsaturated fatty acyl residues such
as docosahexaenoic and docosapentaenoic acid. While human sperm contain almost exclusively diacyl
lipids, many animal sperm additionally contain significant amounts of ether lipids such as alkylacyl-
and alkenyl-acyl lipids (plasmalogens).
Hypothesis/Objective:
It is suggested that deviations from the typical lipid composition are indicative
of pathological changes. Therefore, simple methods to elucidate the sperm lipid composition are essential.
Method:
Matrix-assisted laser desorption and ionization (MALDI) mass spectrometry (MS) is a fast
and simple method. Since the selection of the most suitable matrix is a crucial step in MALDI MS,
this topic will be highlighted. It will also be shown that MALDI MS can be easily combined with
thin-layer chromatography to overcome ion suppression effects.
Results:
The lipid composition of sperm from different species can be elucidated by MALDI MS.
However, different matrix compounds have to be used to record positive and negative ion mass spectra.
Since some sperm (glyco)lipids are characterized by the presence of sulfate residues which suppress
the detection of less acidic lipids in the negative ion mode, previous separation is often necessary.
It will be also emphasized that plasmalogens can be easily identified by either enzymatic digestion
or treatment with acids.
Conclusion:
MALDI MS is a reliable method to obtain sperm lipid fingerprints in a simple and convenient
way.
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Affiliation(s)
- Kathrin M. Engel
- Faculty of Medicine, Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16-18, D-04107 Leipzig, Germany
| | - Ulrike Jakop
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315 Berlin, Germany
| | - Karin Müller
- Leibniz Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315 Berlin, Germany
| | - Sonja Grunewald
- Dermatology, Venerology and Allergology Clinic, Andrological Unit, University Hospital Leipzig, Philipp-Rosenthal- Straße 23, D-04103, Leipzig, Germany
| | - Uwe Paasch
- Dermatology, Venerology and Allergology Clinic, Andrological Unit, University Hospital Leipzig, Philipp-Rosenthal- Straße 23, D-04103, Leipzig, Germany
| | - Jürgen Schiller
- Faculty of Medicine, Institute of Medical Physics and Biophysics, University of Leipzig, Härtelstr. 16-18, D-04107 Leipzig, Germany
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62
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Gloria A, Zambelli D, Carluccio A, Cunto M, Ponzio P, Contri A. Is the protective effect of egg yolk against osmotic and cryogenic damage on dog spermatozoa dose-dependent? Anim Reprod Sci 2019; 213:106259. [PMID: 31987317 DOI: 10.1016/j.anireprosci.2019.106259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/02/2019] [Accepted: 12/13/2019] [Indexed: 11/19/2022]
Abstract
Egg yolk (EY) is conventionally used to reduce sperm cryodamage, however, there has not be evaluation of whether there is a dose-dependent effect with inclusion of EY in semen extender. To enhance the knowledge about the protective effect of EY during cryopreservation of dog semen, a specific study was designed to evaluate the dose-dependent protection of the EY against osmotic and cryogenic damage of dog sperm. In the first experiment, sperm stored in an extender that contained graded EY concentrations (0 %, 5 %, 10 %, and 20 %) were diluted with hypo- or hyper-osmotic solutions (final osmolality of 75, 150, 300, 500, 1000 mOsm/kg). Results from sperm kinetic, membrane integrity (MI), mitochondrial activity, and normal morphology evaluations indicated osmotic stress has especially marked effects on the kinetic capacity of spermatozoa, however, there were no direct effects on mitochondrial activity. In both hypo- and hyper-osmotic conditions, EY had a protective effect regardless of concentration. In the second experiment, semen samples were diluted in extenders at increasing EY concentrations (0 %, 5 %, 10 %, and 20 %) and cryopreserved. Effects on sperm kinetics, membrane and acrosome integrity and mitochondrial membrane potential indicated there was improved sperm viability after thawing when the EY concentration was 5 % and 10 %, and lesser viability when it was 20 %. These results indicate, for the first time, that EY reduces osmotic and cryogenic damage when used at 5 % or 10 % concentrations, and that these concentrations can be used to protect dog spermatozoa more effectively than the conventionally used concentration (20 %).
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Affiliation(s)
- Alessia Gloria
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
| | - Daniele Zambelli
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Bologna, Italy
| | - Augusto Carluccio
- Faculty of Veterinary Medicine, University of Teramo, Loc. Piano d'Accio, 64100 Teramo, Italy
| | - Marco Cunto
- Department of Veterinary Medical Sciences, Alma Mater Studiorum - University of Bologna, via Tolara di Sopra 50, 40064 Ozzano dell'Emilia, Bologna, Italy
| | - Patrizia Ponzio
- Department of Veterinary Sciences, University of Turin, largo Braccini 2, 10095 Grugliasco, Turin, Italy
| | - Alberto Contri
- Faculty of Biosciences and Technologies for Agriculture Food and Environment, University of Teramo, via Balzarini 1, 64100 Teramo, Italy.
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Semen cryopreservation for the Mediterranean brown trout of the Biferno River (Molise-Italy): comparative study on the effects of basic extenders and cryoprotectants. Sci Rep 2019; 9:9703. [PMID: 31273238 PMCID: PMC6609640 DOI: 10.1038/s41598-019-45006-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 05/09/2019] [Indexed: 12/03/2022] Open
Abstract
This study was designed to optimize the semen freezing protocol of the native Mediterranean brown trout inhabiting the Molise rivers through two experiments: an in vitro analysis of the effects of two basic extenders combined with three cryoprotectants on post-thaw semen quality; and an in vivo test to assess the fertilization and hatching rate. Semen was diluted at a ratio of 1:3 in a freezing medium composed of a glucose extender (A) or mineral extender (B). Each basic component contained 10% dimethylsulfoxide, dimethylacetamide or methanol. The post-semen quality was evaluated considering motility, duration of motility, viability and DNA integrity. The basic extender and cryoprotectant were shown to have significant effects on these variables, and the best results were obtained using extender A or B combined with dimethylsulfoxide (P < 0.05). These freezing protocols were selected for fertilization trials in vivo. Fertilization and hatching rates were significantly higher in fresh semen. No significant differences were observed in frozen semen using extender A or B, although higher percentages of eyed eggs and hatching rates were recorded using extender A. According to our in vitro and in vivo results, the glucose-based extender and dimethylsulfoxide emerged as the best combination for an effective cryopreservation protocol for semen of this trout.
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64
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Fenelon M, Maurel DB, Siadous R, Gremare A, Delmond S, Durand M, Brun S, Catros S, Gindraux F, L'Heureux N, Fricain JC. Comparison of the impact of preservation methods on amniotic membrane properties for tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 104:109903. [PMID: 31500032 DOI: 10.1016/j.msec.2019.109903] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 06/02/2019] [Accepted: 06/17/2019] [Indexed: 12/30/2022]
Abstract
Human amniotic membrane (hAM) is considered as an attractive biological scaffold for tissue engineering. For this application, hAM has been mainly processed using cryopreservation, lyophilization and/or decellularization. However, no study has formally compared the influence of these treatments on hAM properties. The aim of this study was to develop a new decellularization-preservation process of hAM, and to compare it with other conventional treatments (fresh, cryopreserved and lyophilized). The hAM was decellularized (D-hAM) using an enzymatic method followed by a detergent decellularization method, and was then lyophilized and gamma-sterilized. Decellularization was assessed using DNA staining and quantification. D-hAM was compared to fresh (F-hAM), cryopreserved (C-hAM) and lyophilized/gamma-sterilized (L-hAM) hAM. Their cytotoxicity on human bone marrow mesenchymal stem cells (hBMSCs) and their biocompatibility in a rat subcutaneous model were also evaluated. The protocol was effective as judged by the absence of nuclei staining and the residual DNA lower than 50 ng/mg. Histological staining showed a disruption of the D-hAM architecture, and its thickness was 84% lower than fresh hAM (p < 0.001). Despite this, the labeling of type IV and type V collagen, elastin and laminin were preserved on D-hAM. Maximal force before rupture of D-hAM was 92% higher than C-hAM and L-hAM (p < 0.01), and D-hAM was 37% more stretchable than F-hAM (p < 0.05). None of the four hAM were cytotoxic, and D-hAM was the most suitable scaffold for hBMSCs proliferation. Finally, D-hAM was well integrated in vivo. In conclusion, this new hAM decellularization process appears promising for tissue engineering applications.
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Affiliation(s)
- Mathilde Fenelon
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France; CHU Bordeaux, Department of Oral Surgery, F-33076 Bordeaux, France.
| | - Delphine B Maurel
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France
| | - Robin Siadous
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France
| | - Agathe Gremare
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France
| | - Samantha Delmond
- CHU Bordeaux, CIC 1401, 33000 Bordeaux, France; Inserm, CIC 1401, 33000 Bordeaux, France
| | - Marlène Durand
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France; CHU Bordeaux, CIC 1401, 33000 Bordeaux, France; Inserm, CIC 1401, 33000 Bordeaux, France
| | - Stéphanie Brun
- University hospital, Gynecology-Obstetrics Service, F-33076 Bordeaux, France
| | - Sylvain Catros
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France; CHU Bordeaux, Department of Oral Surgery, F-33076 Bordeaux, France
| | - Florelle Gindraux
- Orthopedic, Traumatology & Plastic Surgery Department, University Hospital of Besançon, Besançon, France; Nanomedicine Lab, Imagery and Therapeutics (EA 4662), SFR FED 4234, University of Franche-Comté, Besançon, France
| | - Nicolas L'Heureux
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France
| | - Jean-Christophe Fricain
- Univ. Bordeaux, INSERM, Laboratory BioTis, UMR 1026, F-33076 Bordeaux, France; CHU Bordeaux, Department of Oral Surgery, F-33076 Bordeaux, France
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65
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Gonzalez-Castro RA, Trentin JM, Carnevale EM, Graham JK. Effects of extender, cryoprotectants and thawing protocol on motility of frozen-thawed stallion sperm that were refrozen for intracytoplasmic sperm injection doses. Theriogenology 2019; 136:36-42. [PMID: 31242456 DOI: 10.1016/j.theriogenology.2019.06.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 06/08/2019] [Accepted: 06/18/2019] [Indexed: 01/12/2023]
Abstract
We examined the effects of different freezing extenders, cryoprotectant agents (CPA) and initial thawing temperatures for preparing doses of refrozen stallion sperm for intracytoplasmic sperm injection (ICSI). Single ejaculates, from twelve stallions, were frozen in lactose-EDTA-egg yolk extender (LE) with 5% glycerol. In experiment 1, sperm were initially thawed to 5 °C or 37 °C, before being diluted in LE or skim milk-egg yolk extender (SMEY) containing either 5% glycerol (GLY), 5% methylformamide (MF) or 5% of a combination of both (GMF). In experiment 2, frozen sperm were initially thawed to 5 °C, diluted and refrozen in SMEY containing 2, 4, 6 or 8% GLY or GMF. In Experiment 1, sperm motility was reduced after each cryopreservation cycle (P < 0.05). Extender type did not affect motility after refreezing (P > 0.05), but sperm initially thawed to 5 °C exhibited higher motility than sperm thawed to 37 °C (P < 0.05). In addition, sperm refrozen in SMEY containing MF or GMF exhibited higher motility than sperm refrozen in GLY alone (P < 0.05). In experiment 2, there was an interaction between CPA and CPA concentration (P < 0.05). Sperm refrozen with GMF had higher motility than refrozen sperm with GLY (P < 0.05), and while GLY concentration did not affect post-thaw motility (P > 0.05). Sperm refrozen with 6 or 8% GMF exhibited the highest motility (P < 0.05). In conclusion, sperm motility is best maintained when thawing and refreezing stallion sperm in low sperm concentration ICSI doses by initially thawing the sperm to 5 °C and diluting the sperm in a freezing extender with 8% GMF.
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Affiliation(s)
- Raul A Gonzalez-Castro
- Department of Biomedical Sciences, Colorado State University, Equine Reproduction Laboratory, 3101 Rampart Road, Fort Collins, CO, 80521, USA
| | - Janislene M Trentin
- Graduate Program in Animal Medicine (Equine), Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil
| | - Elaine M Carnevale
- Department of Biomedical Sciences, Colorado State University, Equine Reproduction Laboratory, 3101 Rampart Road, Fort Collins, CO, 80521, USA.
| | - James K Graham
- Department of Biomedical Sciences, Colorado State University, Equine Reproduction Laboratory, 3101 Rampart Road, Fort Collins, CO, 80521, USA
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66
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Gororo E, Zulu PT, Chatiza FP, Mhuka C. Effects of different extenders and storage temperatures on longevity of small East African goat (Capra hircus) semen. Small Rumin Res 2019. [DOI: 10.1016/j.smallrumres.2019.04.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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67
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O'Brien E, Esteso M, Castaño C, Toledano-Díaz A, Bóveda P, Martínez-Fresneda L, López-Sebastián A, Martínez-Nevado E, Guerra R, López Fernández M, Vega R, Guillamón F, Santiago-Moreno J. Effectiveness of ultra-rapid cryopreservation of sperm from endangered species, examined by morphometric means. Theriogenology 2019; 129:160-167. [DOI: 10.1016/j.theriogenology.2019.02.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 01/21/2019] [Accepted: 02/24/2019] [Indexed: 12/29/2022]
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68
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Grötter LG, Cattaneo L, Marini PE, Kjelland ME, Ferré LB. Recent advances in bovine sperm cryopreservation techniques with a focus on sperm post-thaw quality optimization. Reprod Domest Anim 2019; 54:655-665. [PMID: 30681204 DOI: 10.1111/rda.13409] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/16/2019] [Indexed: 11/28/2022]
Abstract
Sperm cryopreservation facilitates the storage and transport of germplasm for its use in artificial insemination (AI) and other advanced reproductive technologies. The cryopreservation process can damage sperm and compromise functionality. Several cryobiological studies have found that the physical and biological factors that affect sperm survival at low temperatures during the cryopreservation process often involve the integrity of sperm membrane. In this review, the behaviour of the sperm membrane against cooling, cold shock, ice crystal formation, oxidative stress, osmotic changes, reorganization of the lipid bilayer and addition of cryoprotective agents (CPA) is discussed. In addition, the phenomenon of reactive oxygen species (ROS) and its relationship with the cryopreservation process is also described. Semen cryopreservation techniques have progressed slowly in past years, and the current performance, measured as post-thawed survival, is not very different compared to past decades. Recent advances in understanding the structure of the cell membrane, its function and metabolism have driven to new conservation systems, including lyophilization and vitrification. However, none of these technologies is commercially available, although its future appears very promising.
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Affiliation(s)
- Laura Guadalupe Grötter
- Cátedra de Teriogenología, Facultad de Ciencias Veterinarias, UNL, Esperanza, Santa Fe, Argentina
| | - Luciano Cattaneo
- Cátedra de Teriogenología, Facultad de Ciencias Veterinarias, UNL, Esperanza, Santa Fe, Argentina
| | - Patricia Estela Marini
- Instituto de Biología Molecular y Celular de Rosario (IBR-CONICET) y Área Biología, Facultad de Ciencias Bioquímicas y Farmacéuticas, UNR, Rosario, Santa Fe, Argentina
| | - Michael E Kjelland
- Conservation, Genetics & Biotech, LLC, Vicksburg, Mississippi.,Mayville State University, Mayville, North Dakota
| | - Luis B Ferré
- Instituto Nacional de Tecnología Agropecuaria, Tres Arroyos, Buenos Aires, Argentina
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69
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Dai DH, Qazi IH, Ran MX, Liang K, Zhang Y, Zhang M, Zhou GB, Angel C, Zeng CJ. Exploration of miRNA and mRNA Profiles in Fresh and Frozen-Thawed Boar Sperm by Transcriptome and Small RNA Sequencing. Int J Mol Sci 2019; 20:ijms20040802. [PMID: 30781801 PMCID: PMC6413023 DOI: 10.3390/ijms20040802] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 01/21/2019] [Accepted: 02/08/2019] [Indexed: 12/17/2022] Open
Abstract
Due to lower farrowing rate and reduced litter size with frozen-thawed semen, over 90% of artificial insemination (AI) is conducted using liquid stored boar semen. Although substantial progress has been made towards optimizing the cryopreservation protocols for boar sperm, the influencing factors and underlying mechanisms related to cryoinjury and freeze tolerance of boar sperm remain largely unknown. In this study, we report the differential expression of mRNAs and miRNAs between fresh and frozen-thawed boar sperm using high-throughput RNA sequencing. Our results showed that 567 mRNAs and 135 miRNAs were differentially expressed (DE) in fresh and frozen-thawed boar sperm. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses revealed that the majority of DE mRNAs were enriched in environmental information processing such as cytokine-cytokine receptor interactions, PI3K-Akt signaling, cell adhesion, MAPK, and calcium signaling pathways. Moreover, the targets of DE miRNAs were enriched in significant GO terms such as cell process, protein binding, and response to stimuli. In conclusion, we speculate that DE mRNAs and miRNAs are heavily involved in boar sperm response to environment stimuli, apoptosis, and metabolic activities. The differences in expression also reflect the various structural and functional changes in sperm during cryopreservation.
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Affiliation(s)
- Ding-Hui Dai
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
| | - Izhar Hyder Qazi
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
- Department of Veterinary Anatomy & Histology, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand 67210, Pakistan.
| | - Ming-Xia Ran
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
| | - Kai Liang
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yan Zhang
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
| | - Ming Zhang
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
| | - Guang-Bin Zhou
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
| | - Christiana Angel
- College of Veterinary Medicine, Sichuan Agricultural University, Chengdu 611130, China.
- Department of Veterinary Parasitology, Faculty of Veterinary Sciences, Shaheed Benazir Bhutto University of Veterinary and Animal Sciences, Sakrand 67210, Pakistan.
| | - Chang-Jun Zeng
- College of Animal Sciences and Technology, and Farm Animal Genetic Resources Exploration and Innovation Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China.
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70
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Micro-quantity straw as a carrier for cryopreservation of oligozoospermic semen samples: Effects of storage times and cryoprotectant. Cryobiology 2019; 86:65-70. [DOI: 10.1016/j.cryobiol.2018.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 11/27/2018] [Accepted: 12/07/2018] [Indexed: 11/23/2022]
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71
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Saleh R, Assaf H, Abd El Maged WM, Elsuity M, Fawzy M. Increased cryo-survival rate in ejaculated human sperm from infertile men following pre-freeze in vitro myo-inositol supplementation. Clin Exp Reprod Med 2018; 45:177-182. [PMID: 30538948 PMCID: PMC6277674 DOI: 10.5653/cerm.2018.45.4.177] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 10/16/2018] [Accepted: 10/23/2018] [Indexed: 12/14/2022] Open
Abstract
Objective To investigate the effects of in vitro myo-inositol (Myo-Ins) supplementation of cryopreserved human semen on the cryo-survival rate (CSR). Methods Semen samples were obtained from 41 infertile men. Following routine semen analysis, each sample was divided into two equal aliquots (0.5 mL each). One aliquot was treated with 1 mg of Myo-Ins dissolved in 10 µL of sperm preparation medium. The second aliquot was treated with 10 µL of the same medium (control). Both aliquots were incubated for 20 minutes prior to freezing to slow the freezing process. The frozen samples were examined for post-thaw percentages of total motility (TM), progressive motility (PM), and the CSR, defined as the percentage of post-thaw TM divided by the percentage of pre-freeze TM and multiplied in 100. The results were expressed as median and interquartile range (25th and 75th percentiles). Results The pre-freeze TM (50% [30%–50%]) and PM (35% [20%–35%]) were significantly higher than the post-thaw TM and PM in the Myo-Ins group (15% [10%–35%] and 10% [5%–20%]; p<0.001 and p<0.001, respectively) and the control group (10% [6%–30%] and 5% [3%–15%]; p<0.001 and p<0.001, respectively). The CSR of the 41 semen aliquots supplemented with Myo-Ins (40% [25%–70%]) was significantly higher than that of the control samples (30% [13%–58%], p=0.041). The CSR of the 26 abnormal semen samples that were supplemented with Myo-Ins (38% [20%–50%]) was significantly higher than that of the control samples (23% [12%–30%], p=0.031). Conclusion In vitro Myo-Ins supplementation of ejaculated human sperm from infertile men resulted in a significant increase in the CSR in samples with abnormal pre-freeze sperm parameters.
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Affiliation(s)
- Ramadan Saleh
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Sohag University, Sohag, Egypt.,Ajyal IVF Center, Ajyal Hospital, Sohag, Egypt
| | - Hanan Assaf
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Wafaa M Abd El Maged
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Sohag University, Sohag, Egypt
| | - Mohamed Elsuity
- Department of Dermatology, Venereology and Andrology, Faculty of Medicine, Sohag University, Sohag, Egypt
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Hidalgo M, Consuegra C, Dorado J, Diaz-Jimenez M, Ortiz I, Pereira B, Sanchez R, Crespo F. Concentrations of non-permeable cryoprotectants and equilibration temperatures are key factors for stallion sperm vitrification success. Anim Reprod Sci 2018; 196:91-98. [DOI: 10.1016/j.anireprosci.2018.06.022] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 06/12/2018] [Accepted: 06/28/2018] [Indexed: 10/28/2022]
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73
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Dias EAR, Campanholi SP, Rossi GF, Freitas Dell'Aqua CDP, Dell'Aqua JA, Papa FO, Zorzetto MF, de Paz CCP, Oliveira LZ, Mercadante MEZ, Monteiro FM. Evaluation of cooling and freezing systems of bovine semen. Anim Reprod Sci 2018; 195:102-111. [PMID: 29885853 DOI: 10.1016/j.anireprosci.2018.05.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 04/29/2018] [Accepted: 05/14/2018] [Indexed: 11/28/2022]
Abstract
Semen cryopreservation comprises different steps, among them are the cooling and freezing rates which significantly influence the quality of thawed sperm. Different systems with variable freezing rates are used for freezing bull semen in the field, with a consequence of variable success rates. The objective of this study was to compare different systems for freezing bull semen in the field. Five cooling methods of semen and two methods for the subsequent freezing phase (5 × 2 factorial scheme) were used. Two to four ejaculates were collected from 12 bulls with an electroejaculator. The ejaculates were diluted in BotuBov® to a concentration of 50 × 106 spermatozoa/mL in 0.5-mL straws. After dilution, the straws were cooled to 5 °C in five cooling systems: TK 4000® at a cooling rate of -0.25 °C/min (R1); TK 4000® at a rate of -0.5 °C/min (R2); Minitube® refrigerator at a rate of -2.8 °C/min (R3); Botutainer® at a rate of -0.65 °C (R4), and domestic refrigerator at a rate of -2.0 °C/min (R5). After stabilization at 5 °C for 4 h, these straws were then submitted to two freezing systems: TK 4000® at a freezing rate of -15 °C/min (C1) and Styrofoam box with liquid nitrogen at a rate of -19 °C/min (C2). Sperm kinetics were evaluated by computer-assisted sperm analysis at four time points: in fresh semen, after cooling, post-thawing, and after the rapid thermal resistance test (TRT). In addition, plasma and acrosomal membrane integrity, mitochondrial potential and intracellular H2O2 were analyzed after thawing by flow cytometry. The R1, R2 and R4 cooling systems were the most efficient in preserving sperm viability, membrane integrity and intracellular H2O2. Samples frozen in the C1 system exhibited better post-thaw and post-TRT kinetics than C2 samples. In conclusion, slower cooling curves in conjunction with a constant freezing rate obtained with the programmable unit were more efficient for freezing bull semen in the field.
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74
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Barbas JP, Leahy T, Horta AE, García-Herreros M. Sperm kinematics and subpopulational responses during the cryopreservation process in caprine ejaculates. Cryobiology 2018; 82:137-147. [PMID: 29571632 DOI: 10.1016/j.cryobiol.2018.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Revised: 02/28/2018] [Accepted: 03/19/2018] [Indexed: 10/17/2022]
Abstract
Sperm cryopreservation in goats has been a challenge for many years due to the detrimental effects of seminal plasma enzymes produced by the bulbo-urethral glands which catalyse the hydrolysis of lecithins in egg yolk to fatty acids and lysolecithins which are deleterious to spermatozoa. This fact implies to carry out additional processing steps during sperm cryopreservation for seminal plasma removal triggering different sperm responses which may affect sperm functionality. The objective of the present study was to determine specific sperm subpopulation responses in different handling steps during the cryopreservation process by using functional sperm kinematic descriptors in caprine ejaculates. Buck ejaculates (n = 40) were analysed for sperm concentration, viability, morphology and acrosome integrity. Moreover, sperm motility was assessed using a computer-assisted sperm analysis (CASA) system after five different handling steps (fresh sperm, 1st washing, 2nd washing, cooling and frozen-thawed sperm) during a standard cryopreservation protocol for goat semen. The results were analysed using Principal Component Analysis (PCA) and multivariate clustering procedures to establish the relationship between the distribution of the subpopulations found and the functional sperm motility in each step. Except for the 1st and 4th steps, four sperm kinematic subpopulations were observed explaining more than 75% of the variance. Based on velocity and linearity parameters and the subpopulations disclosed, the kinematic response varies among processing steps modifying sperm movement trajectories in a subpopulation-specific and handling step-dependent manner (p < 0.001). The predominant motile subpopulation in freshly ejaculated buck sperm had very fast velocity characteristics and a non-linear trajectory (41.1%). Washing buck sperm twice altered the subpopulation structure as well as cooling which resulted in a dramatic reduction in sperm velocities (p < 0.01). Frozen-thawed spermatozoa showed similar characteristics to cooled sperm except there was a further increase in linearity with a large proportion of sperm attributed to new slow, linear cluster (32.5%). In conclusion, this study confirms the variability and heterogeneity of goat sperm kinematic patterns throughout the cryopreservation process and suggests that the predominant motility pattern (assayed in vitro via CASA) of high quality spermatozoa might be typified by high speed and a non-linear trajectory. The relationships among the number and distribution of sperm subpopulations and the different handling steps were particularlly relevant, specially after the cooling and the post-thawing steps, when effects derived from these critical handling steps were evident and altered drastically the sperm motion patterns.
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Affiliation(s)
- J P Barbas
- National Institute for Agricultural and Veterinary Research (I.N.IA.V., I.P.), Santarém, Portugal
| | - T Leahy
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, NSW 2006, Australia
| | - A E Horta
- National Institute for Agricultural and Veterinary Research (I.N.IA.V., I.P.), Santarém, Portugal
| | - M García-Herreros
- National Institute for Agricultural and Veterinary Research (I.N.IA.V., I.P.), Santarém, Portugal.
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75
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Borges AA, Neta LBQ, Santos MV, Oliveira MF, Silva AR, Pereira AF. Combination of ethylene glycol with sucrose increases survival rate after vitrification of somatic tissue of collared peccaries (Pecari tajacu Linnaeus, 1758). PESQUISA VETERINARIA BRASILEIRA 2018. [DOI: 10.1590/1678-5150-pvb-5193] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT: The cryopreservation of somatic tissue in collared peccaries promotes an alternative source of genetic material of this specie. The solid-surface vitrification (SSV) is a great option for tissue conservation; nevertheless, the optimization of SSV requirements is necessary, especially when referred to cryoprotectants that will compose the vitrification solution. Therefore, the aim was to evaluate the effect of the presence of 0.25 M sucrose in addition to different combinations (only or association) and concentrations (1.5 M or 3.0 M) of ethylene glycol (EG) and/or dimethyl sulfoxide (DMSO) in the somatic tissue vitrification of collared peccaries. Subsequently, we tested six combinations of cryoprotectants with or without sucrose in Dulbecco modified Eagle medium (DMEM) plus 10% fetal bovine serum (FBS). Thus, 3.0 M EG with sucrose was able to maintain normal tissue characteristics compared with non-vitrified (control), especially for the volumetric ratio of epidermis (61.2 vs. 58.7%) and dermis (34.5 vs. 36.6%), number of fibroblast (90.3 vs. 127.0), argyrophilic nucleolar organizer region (AgNOR) ratio (0.09 vs. 0.17%) and nucleus area (15.4 vs. 14.5 μm2) respectively. In conclusion, 3.0 M EG with 0.25 M sucrose and 10% FBS resulted in a better cryoprotectant composition in the SSV for somatic tissue of collared peccaries.
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76
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Schäfer J, Waberski D, Jung M, Schulze M. Impact of holding and equilibration time on post-thaw quality of shipped boar semen. Anim Reprod Sci 2017; 187:109-115. [DOI: 10.1016/j.anireprosci.2017.10.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2017] [Revised: 10/20/2017] [Accepted: 10/24/2017] [Indexed: 11/24/2022]
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77
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Rakha BA, Ansari MS, Akhter S, Zafar Z, Hussain I, Santiago-Moreno J, Blesbois E. Cryopreservation of Indian red jungle fowl ( Gallus gallus murghi ) semen with polyvinylpyrrolidone. Cryobiology 2017; 78:27-33. [DOI: 10.1016/j.cryobiol.2017.07.006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2017] [Revised: 07/14/2017] [Accepted: 07/14/2017] [Indexed: 11/25/2022]
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78
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Pezo F, Cheuquemán C, Salinas P, Risopatrón J. Freezing dog semen using −80 °C ultra-freezer: Sperm function and in vivo fertility. Theriogenology 2017; 99:36-40. [DOI: 10.1016/j.theriogenology.2017.05.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 05/05/2017] [Accepted: 05/06/2017] [Indexed: 11/26/2022]
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79
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Palomar Rios A, Molina Botella I. Sperm parameters that play a major role in the assessment of semen quality after cryopreservation. J Assist Reprod Genet 2017. [PMID: 28624858 DOI: 10.1007/s10815-017-0973-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- A Palomar Rios
- Hospital Universitari i Politècnic La Fe, Assisted Reproduction Unit, 46026, Valencia, Spain.
| | - I Molina Botella
- Hospital Universitari i Politècnic La Fe, Assisted Reproduction Unit, 46026, Valencia, Spain
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80
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De Oliveira RA, Budik S, Aurich C. Influence of partial or total replacement of glycerol by alternative cryoprotectants in Ghent freezing extender on post-thaw sperm quality in stallions. Reprod Domest Anim 2017; 52:715-721. [DOI: 10.1111/rda.12970] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Accepted: 02/19/2017] [Indexed: 12/14/2022]
Affiliation(s)
- RA De Oliveira
- Artificial Insemination and Embryo Transfer; Vetmeduni Vienna; Vienna Austria
| | - S Budik
- Artificial Insemination and Embryo Transfer; Vetmeduni Vienna; Vienna Austria
| | - C Aurich
- Artificial Insemination and Embryo Transfer; Vetmeduni Vienna; Vienna Austria
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81
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Najafi A, Daghigh-Kia H, Dodaran HV, Mehdipour M, Alvarez-Rodriguez M. Ethylene glycol, but not DMSO, could replace glycerol inclusion in soybean lecithin-based extenders in ram sperm cryopreservation. Anim Reprod Sci 2017; 177:35-41. [DOI: 10.1016/j.anireprosci.2016.12.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 11/20/2016] [Accepted: 12/02/2016] [Indexed: 11/29/2022]
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