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Al-Kass Z, Brown A, Johannisson A, Ntallaris T, Morrell JM. Variation among stallions in sperm quality after single layer centrifugation. Reprod Domest Anim 2021; 56:848-856. [PMID: 33706415 DOI: 10.1111/rda.13924] [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: 01/03/2021] [Revised: 02/20/2021] [Accepted: 03/09/2021] [Indexed: 12/27/2022]
Abstract
Although single layer centrifugation (SLC) selects robust spermatozoa from stallion semen, the effect of individual variation has not been studied in detail. The objective of this study was to determine the variation among stallions in the effects of SLC on sperm quality during cooled storage for up to 48 hr. Semen samples from seven stallions (18 ejaculates) were split, with one portion being used for SLC and the other serving as a control (CON). Sperm quality (kinematics, reactive oxygen species (ROS) production, membrane integrity (MI) and chromatin integrity) were analysed at 0, 24 and 48 hr using computer-assisted sperm analysis and flow cytometry. Sperm quality was better in SLC than in CON at all timepoints, especially chromatin integrity and MI (p < .0001 for both), and some categories of ROS production (e.g. proportion of live hydrogen peroxide negative spermatozoa, p < .0001), but the degree of improvement varied among stallions and type of ROS (p < .05-p < .0001). Total and progressive motility were also better in SLC samples than in CON at 24 and 48 hr (p < .0001), although the effect on sperm kinematics varied. The interaction of treatment, time and stallion was not significant. In conclusion, sperm quality was better in SLC samples than in CON, although there was considerable individual variation among stallions. The improvement in sperm quality, particularly in chromatin integrity, was clearly beneficial, and therefore the use of this technique would be warranted for all stallion semen samples.
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Affiliation(s)
- Ziyad Al-Kass
- Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden.,Department of Surgery and Theriogenology, College of Veterinary Medicine, University of Mosul, Mosul, Iraq
| | - Alexander Brown
- Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Anders Johannisson
- Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Theodoros Ntallaris
- Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
| | - Jane M Morrell
- Clinical Sciences, Swedish University of Agricultural Sciences (SLU), Uppsala, Sweden
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Malo C, Crichton EG, Morrell JM, Pukazhenthi BS, Skidmore JA. Single layer centrifugation of fresh dromedary camel semen improves sperm quality and in vitro fertilization capacity compared with simple sperm washing. Reprod Domest Anim 2017; 52:1097-1103. [DOI: 10.1111/rda.13036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2017] [Accepted: 06/18/2017] [Indexed: 01/23/2023]
Affiliation(s)
- C Malo
- Camel Reproduction Center; Dubai United Arab Emirates
| | - EG Crichton
- Camel Reproduction Center; Dubai United Arab Emirates
| | - JM Morrell
- Clinical Sciences; Swedish University of Agricultural Sciences (SLU); Uppsala Sweden
| | - BS Pukazhenthi
- Center for Species Survival; Smithsonian Conservation Biology Institute; Front Royal VA USA
| | - JA Skidmore
- Camel Reproduction Center; Dubai United Arab Emirates
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Ortiz I, Dorado J, Morrell J, Gosálvez J, Crespo F, Jiménez JM, Hidalgo M. New approach to assess sperm DNA fragmentation dynamics: Fine-tuning mathematical models. J Anim Sci Biotechnol 2017; 8:23. [PMID: 28286648 PMCID: PMC5341447 DOI: 10.1186/s40104-017-0155-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2016] [Accepted: 02/21/2017] [Indexed: 12/31/2022] Open
Abstract
Background Sperm DNA fragmentation (sDF) has been proved to be an important parameter in order to predict in vitro the potential fertility of a semen sample. Colloid centrifugation could be a suitable technique to select those donkey sperm more resistant to DNA fragmentation after thawing. Previous studies have shown that to elucidate the latent damage of the DNA molecule, sDF should be assessed dynamically, where the rate of fragmentation between treatments indicates how resistant the DNA is to iatrogenic damage. The rate of fragmentation is calculated using the slope of a linear regression equation. However, it has not been studied if sDF dynamics fit this model. The objectives of this study were to evaluate the effect of different after-thawing centrifugation protocols on sperm DNA fragmentation and elucidate the most accurate mathematical model (linear regression, exponential or polynomial) for DNA fragmentation over time in frozen-thawed donkey semen. Results After submitting post-thaw semen samples to no centrifugation (UDC), sperm washing (SW) or single layer centrifugation (SLC) protocols, sDF values after 6 h of incubation were significantly lower in SLC samples than in SW or UDC. Coefficient of determination (R2) values were significantly higher for a second order polynomial model than for linear or exponential. The highest values for acceleration of fragmentation (aSDF) were obtained for SW, followed by SLC and UDC. Conclusion SLC after thawing seems to preserve longer DNA longevity in comparison to UDC and SW. Moreover, the fine-tuning of models has shown that sDF dynamics in frozen-thawed donkey semen fit a second order polynomial model, which implies that fragmentation rate is not constant and fragmentation acceleration must be taken into account to elucidate hidden damage in the DNA molecule.
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Affiliation(s)
- Isabel Ortiz
- Veterinary Reproduction Group, Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain
| | - Jesús Dorado
- Veterinary Reproduction Group, Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain
| | - Jane Morrell
- Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Box 7054, SE-75007 Uppsala, Sweden
| | - Jaime Gosálvez
- Department of Biology, Universidad Autónoma de Madrid, 28049 Madrid, Spain
| | - Francisco Crespo
- Department of Reproduction, Centro Militar de Cría Caballar (FESCCR-Ministry of Defense), 05005 Ávila, Spain
| | - Juan M Jiménez
- Department of Chemistry and Physics of Materials, University of Salzburg, Hellbrunner Straße 34/III, A-5020 Salzburg, Austria
| | - Manuel Hidalgo
- Veterinary Reproduction Group, Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, University of Cordoba, 14071 Cordoba, Spain
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In vivo fertilizing ability of stallion spermatozoa processed by single layer centrifugation with Androcoll-E™. Saudi J Biol Sci 2016; 24:1489-1496. [PMID: 30294217 PMCID: PMC6169511 DOI: 10.1016/j.sjbs.2016.01.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 12/23/2015] [Accepted: 01/17/2016] [Indexed: 11/24/2022] Open
Abstract
A colloid with a species specific silane-coated, silica-based formulation, optimized for stallion (Androcoll-E™), enables a better sub-population of spermatozoa to be selected from stallion ejaculates. However, such a practice has not been critically evaluated in stallions with fertility problems. In this study we evaluate whether single-layer centrifugation (SLC) through Androcoll-E™ could be used to enhance fertility rates in a subfertile stallion. Ejaculates were obtained from two different stallions, one Lusitano (fertile) and one Sorraia (subfertile), with distinct sperm characteristics and fertility. Motility, morphology, plasma membrane structural (eosin-nigrosin) and functional integrity (HOS test), mitochondrial functionality (Δψm; JC-1) and longevity (motility after 72 h cooling) after centrifugation in Androcoll-E™, as well as pregnancy rates obtained after artificial insemination (AI), with and without (control group) SLC-treated sperm were assessed. The effect of SLC on sperm characteristics, and fertility results were evaluated by ANOVA and Fisher procedures, respectively. Our results showed that SLC-selected sperm did not differ from the raw semen in terms of viability, morphology, response to hypo-osmotic conditions (HOS test) and mitochondrial membrane potential (↑ΔΨmit; JC-1). Sperm motility in cooled samples was not improved by SLC treatment. Our data show that SLC through Androcoll-E™ has no effect on pregnancy rates in the stallions used in this trial.
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Ortiz I, Dorado J, Morrell JM, Crespo F, Gosálvez J, Gálvez MJ, Acha D, Hidalgo M. Effect of single-layer centrifugation or washing on frozen-thawed donkey semen quality: Do they have the same effect regardless of the quality of the sample? Theriogenology 2015; 84:294-300. [PMID: 25917884 DOI: 10.1016/j.theriogenology.2015.03.021] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 03/23/2015] [Accepted: 03/23/2015] [Indexed: 11/18/2022]
Abstract
The aims of this study were to determine the sperm quality of frozen-thawed donkey sperm samples after single-layer centrifugation (SLC) using Androcoll-E in comparison to sperm washing or no centrifugation and to determine if the effect on the sperm quality after SLC or sperm washing depends on the quality of the sample. Frozen-thawed sperm samples from Andalusian donkeys were divided into three aliquots, and they were processed using three different techniques after thawing: uncentrifuged diluted control (UDC), sperm washing (SW), and SLC. Afterward, sperm quality index was estimated by integrating all parameters (total and progressive sperm motility, membrane integrity, and DNA fragmentation) in a single value. The relationship between the sperm quality of thawed UDC samples and the effect on sperm parameters in SW and SLC-selected samples was assessed. Sperm quality index was significantly higher (P < 0.001) in SLC (0.8 ± 0.0) samples than that in UDC (0.6 ± 0.0) and SW (0.6 ± 0.0) samples, regardless of the sperm quality index after thawing of the sperm sample. In conclusion, SLC of frozen-thawed donkey spermatozoa using Androcoll-E-Small can be a suitable procedure for selecting frozen-thawed donkey sperm with better quality, in particular in those samples where an improvement in motility is needed.
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Affiliation(s)
- I Ortiz
- Animal Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, Córdoba, Spain.
| | - J Dorado
- Animal Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, Córdoba, Spain
| | - J M Morrell
- Department of Clinical Sciences, Division of Reproduction, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - F Crespo
- Department of Reproduction, Centro Militar de Cría Caballar (FESCCR-Ministry of Defense), Ávila, Spain
| | - J Gosálvez
- Department of Biology, Universidad Autónoma de Madrid, Madrid, Spain
| | - M J Gálvez
- Animal Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, Córdoba, Spain
| | - D Acha
- Animal Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, Córdoba, Spain
| | - M Hidalgo
- Animal Reproduction Group, Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, University of Cordoba, Córdoba, Spain
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Guimarães T, Lopes G, Pinto M, Silva E, Miranda C, Correia MJ, Damásio L, Thompson G, Rocha A. Colloid centrifugation of fresh stallion semen before cryopreservation decreased microorganism load of frozen-thawed semen without affecting seminal kinetics. Theriogenology 2014; 83:186-91. [PMID: 25287189 DOI: 10.1016/j.theriogenology.2014.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Revised: 09/03/2014] [Accepted: 09/08/2014] [Indexed: 11/28/2022]
Abstract
Freezability of equine semen may be influenced by microorganism population of semen. The objective of this study was to verify the effect of single-layer density gradient centrifugation (SLC) of fresh semen before cryopreservation on semen's microbial load (ML) and sperm cells kinetics after freezing-thawing. For that, one ejaculate was collected from 20 healthy stallions and split into control (C) samples (cryopreserved without previous SLC) and SLC samples (subjected to SLC). Semen cryopreservation was performed according to the same protocol in both groups. Microbial load of each microorganism species and total microbial load (TML) expressed in colony-forming units (CFU/mL) as well as frozen-thawed sperm kinetics were assessed in both groups. Additional analysis of the TML was performed, subdividing the frozen-thawed samples in "suitable" (total motility ≥ 30%) and "unsuitable" (total motility < 30%) semen for freezing programs, and comparing the C and SLC groups within these subpopulations. After thawing, SLC samples had less (P < 0.05) TML (88.65 × 10(2) ± 83.8 × 10(2) CFU/mL) than C samples (155.69 × 10(2) ± 48.85 × 10(2) CFU/mL), mainly due to a reduction of Enterococcus spp. and Bacillus spp. A relationship between post-thaw motility and SLC effect on ML was noted, as only in samples with more than 30% total motility was ML reduced (P < 0.05) by SLC (from 51.33 × 10(2) ± 33.26 × 10(2) CFU/mL to 26.68 × 10(2) ± 12.39 × 10(2) CFU/mL in "suitable" frozen-thawed semen vs. 240.90 × 10(2) ± 498.20 × 10(2) to 139.30 × 10(2) ± 290.30 × 10(2) CFU/mL in "unsuitable" frozen-thawed semen). The effect of SLC on kinetics of frozen-thawed sperm cells was negligible.
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Affiliation(s)
- T Guimarães
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal; Centro de Estudos de Ciência Animal (CECA/ICETA), University of Porto, Porto, Portugal
| | - G Lopes
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal; Centro de Estudos de Ciência Animal (CECA/ICETA), University of Porto, Porto, Portugal
| | - M Pinto
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal
| | - E Silva
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal; Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), University of Porto, Porto, Portugal
| | - C Miranda
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal
| | - M J Correia
- Fundação Alter Real, Alter do Chão, Portugal
| | - L Damásio
- Private Practitioner, Évora, Portugal
| | - G Thompson
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal; Centro de Investigação em Biodiversidade e Recursos Genéticos (CIBIO), University of Porto, Porto, Portugal
| | - A Rocha
- Instituto de Ciências Biomédicas Abel Salazar, University of Porto, Portugal; Centro de Estudos de Ciência Animal (CECA/ICETA), University of Porto, Porto, Portugal.
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