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Han X, Li Y, Zong Y, Zhao Y, Jiang L, Ni A, Yang H, Yuan J, Ma H, Ma L, Chen J, Ma T, Sun Y. Key miRNAs of chicken seminal plasma extracellular vesicles related with sperm motility regulation. Int J Biol Macromol 2024; 277:134022. [PMID: 39038569 DOI: 10.1016/j.ijbiomac.2024.134022] [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: 04/07/2024] [Revised: 07/04/2024] [Accepted: 07/17/2024] [Indexed: 07/24/2024]
Abstract
MicroRNAs (miRNAs) are bio-active elements cargoed by seminal plasma extracellular vesicles extracellular vesicles (SPEVs) which are crucial for sperm function and fertility modulation. This study aimed to isolate, characterize, and identify the miRNA expression profiles in the SPEVs from high (HSM) and low sperm motility (LSM) groups that could serve as fertility biomarkers and explain the underlying mechanisms. The isolated SPEVs were round spherical structures of approximately 50-200 nm in diameter expressing molecular markers. A total of 1006 and 1084 miRNAs were detected in HSM and LSM, respectively, with 34 being differentially expressed. Their targeted genes involved in SNARE interactions in vesicular transport, Metabolic pathways, and Apelin signaling pathway, etc. The joint analysis with mRNAs of sperm and sperm storage tubules cells highlighted the cellular communication mediated by SPEVs miRNAs, where they may rule fertility by affecting sperm maturation and amino acid metabolism. SPEVs as additives could improve fertility of fresh and frozen sperm, while the knockdown of one of the differentially expressed miRNAs, miR-24-3p, diminished this effect, indicating its crucial roles. This study expands our understanding of SPEVs miRNAs mediated sperm maturation and fertility modulation, and may help to develop new therapeutic strategies for infertility and sperm storage.
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Affiliation(s)
- Xintong Han
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yunlei Li
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yunhe Zong
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Yi Zhao
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China; College of Life Sciences and Food Engineering, Hebei University of Engineering, Handan 056038, Hebei, China
| | - Lijun Jiang
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Aixin Ni
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Hanhan Yang
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jingwei Yuan
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Hui Ma
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Lin Ma
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jilan Chen
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Tenghe Ma
- College of medicine, Hebei University of Engineering, Handan 056000, Hebei, China.
| | - Yanyan Sun
- State Key Laboratory of Animal Biotech Breeding, Key Laboratory of Animal (Poultry) Genetics Breeding and Reproduction of Ministry of Agriculture and Rural Affairs, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
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Mujitaba MA, Kútvölgyi G, Radnai Szentpáli J, Debnár VJ, Tokár A, Vass N, Bodó S. The Influence of Three Commercial Soy Lecithin-Based Semen Extenders and Two Spermatozoa Concentrations on the Quality of Pre-Freeze and Post-Thaw Ram Epididymal Spermatozoa. Animals (Basel) 2024; 14:1237. [PMID: 38672385 PMCID: PMC11047534 DOI: 10.3390/ani14081237] [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: 03/12/2024] [Revised: 04/11/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024] Open
Abstract
There are limited studies on the factors affecting the success of ram epididymal spermatozoa (REPS) cryopreservation. On this note, the current study assessed the influence of three commercial soy lecithin-based semen extenders, AndroMed® (AND), BioXcell® (BIO), and OviXcell® (OVI), and two concentrations (400 × 106 vs. 200 × 106 spermatozoa/mL) on the pre-freeze and post-thaw quality of REPS. The REPS were retrieved from nine adult rams' testes and diluted with each of the three extenders to both concentrations. Straws were frozen manually. Standard motility (SMP) and kinematic parameters (KPs) were assessed via a CASA, while spermatozoa viability, morphology, and acrosomal integrity were assessed via the Kovács-Foote staining technique. The concentration did not significantly affect the pre-freeze and post-thaw SMP and KPs of REPS. BIO and OVI had significantly higher pre-freeze and post-thaw BCFs, post-thaw VAP, and the percentage of all intact heads than AND. In contrast, AND had a significantly lower percentage of REPS with tail defects than BIO and OVI. The 400 × 106 spermatozoa/mL concentration resulted in a significantly higher percentage of all intact heads than the 200 × 106 spermatozoa/mL concentration. Freezing significantly increased tail defects and decreased the percentage of REPS with distal cytoplasmic droplets. The cryopreservation of REPS at the 400 × 106 spermatozoa/mL concentration is recommended. All three extenders must be optimized to preserve the viability, membrane integrity, and better normal morphology of REPS; the reason for increased tail abnormality after the freezing/thawing process needs to be studied.
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Affiliation(s)
- Malam Abulbashar Mujitaba
- Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (M.A.M.); (N.V.)
- Doctoral School of Animal Science, University of Debrecen, H-4032 Debrecen, Hungary
| | - Gabriella Kútvölgyi
- Department of Precision Livestock Farming and Animal Biotechnics, Institute of Animal Sciences, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba Sándor Street 40, H-7400 Kaposvár, Hungary; (V.J.D.); (S.B.)
| | - Judit Radnai Szentpáli
- Institute of Horticultural Science, Hungarian University of Agriculture and Life Sciences, Buda Campus, Villányi Street 29-43, H-1118 Budapest, Hungary;
| | - Viktória Johanna Debnár
- Department of Precision Livestock Farming and Animal Biotechnics, Institute of Animal Sciences, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba Sándor Street 40, H-7400 Kaposvár, Hungary; (V.J.D.); (S.B.)
| | - Alexandra Tokár
- Festetics György Doctoral School, Hungarian University of Agriculture and Life Sciences, Deák Ferenc Street 16, H-8360 Keszthely, Hungary;
| | - Nóra Vass
- Department of Animal Nutrition and Physiology, Faculty of Agriculture and Food Sciences and Environmental Management, University of Debrecen, Böszörményi Street 138, H-4032 Debrecen, Hungary; (M.A.M.); (N.V.)
| | - Szilárd Bodó
- Department of Precision Livestock Farming and Animal Biotechnics, Institute of Animal Sciences, Hungarian University of Agriculture and Life Sciences, Kaposvár Campus, Guba Sándor Street 40, H-7400 Kaposvár, Hungary; (V.J.D.); (S.B.)
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Balló A, Czétány P, Busznyákné KS, Márk L, Mike N, Török A, Szántó Á, Máté G. Oxido-Reduction Potential as a Method to Determine Oxidative Stress in Semen Samples. Int J Mol Sci 2023; 24:11981. [PMID: 37569357 PMCID: PMC10418886 DOI: 10.3390/ijms241511981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Revised: 07/16/2023] [Accepted: 07/24/2023] [Indexed: 08/13/2023] Open
Abstract
There are different estimates for the incidence of infertility. Its occurrence may vary from area to area, but on average, it affects 15% of couples and 10-12% of men worldwide. Many aspects of infertility can be linked to reactive oxygen species (ROS) and the process of oxidative stress (OS). The association between poor semen quality and OS is well known. Unfortunately, there is no accepted protocol for the diagnosis and treatment of OS in andrology. Oxido-reduction potential (ORP) measurement is a new method for determining the ratio between oxidant and antioxidant molecules. Currently, ORP measurement is one of the fastest and most user-friendly methods of andrological OS determination and our goals were to confirm published correlations between ORP values and sperm parameters, examine how sperm concentration influences these results, and investigate whether intracellular ROS formations are also manifested in the ORP values or not after artificial ROS induction. Intracellular ROS formations were induced by menadione (superoxide anion inducer), hydrogen peroxide, and tert-butyl hydroperoxide (lipid peroxidation inducer) treatments; sperm parameters like motility and viability were determined with an SCA Scope system, and ORP changes were recorded by the Mioxsys system. Significant correlations were noticed among the ORP, spermatozoa concentration, motility, progressive motility, and viability. Nevertheless, only the ORP value after normalization with the sperm count correlated with these parameters. Due to normalization, very low and very high sperm concentrations can give misleading results. The means of the non-normalized ORP values were almost the same. All of the applied treatments resulted in decreases in the viability, motility, and progressive motility, and interestingly, altered ORP levels were detected. In addition, it was determined that seminal plasma had a significant protective effect on spermatozoa. The elimination of seminal plasma caused higher sensitivity of spermatozoa against used OS inducers, and higher ORP levels and decreased viabilities and motilities were measured. The ORP level could be a good indicator of male OS; however, in cases of low and high sperm counts, its result can be misleading. Overall, the conclusion can be drawn that ORP determination is a suitable method for detecting intracellular ROS accumulation, but it has limitations that still need to be clarified.
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Affiliation(s)
- András Balló
- Pannon Reproduction Institute, 8300 Tapolca, Hungary; (A.B.); (K.S.B.); (A.T.)
- Urology Clinic, University of Pécs Clinical Centre, 7621 Pécs, Hungary; (P.C.); (Á.S.)
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary;
| | - Péter Czétány
- Urology Clinic, University of Pécs Clinical Centre, 7621 Pécs, Hungary; (P.C.); (Á.S.)
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary;
| | | | - László Márk
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary;
- Department of Analytical Biochemistry, Institute of Biochemistry and Medical Chemistry, University of Pécs Medical School, 7624 Pécs, Hungary
- MTA-PTE Human Reproduction Scientific Research Group, 7624 Pécs, Hungary
| | - Nóra Mike
- Szentágothai Research Centre, Department of Physiology, Medical School, University of Pécs, 7624 Pécs, Hungary;
| | - Attila Török
- Pannon Reproduction Institute, 8300 Tapolca, Hungary; (A.B.); (K.S.B.); (A.T.)
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary;
| | - Árpád Szántó
- Urology Clinic, University of Pécs Clinical Centre, 7621 Pécs, Hungary; (P.C.); (Á.S.)
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary;
| | - Gábor Máté
- Pannon Reproduction Institute, 8300 Tapolca, Hungary; (A.B.); (K.S.B.); (A.T.)
- Urology Clinic, University of Pécs Clinical Centre, 7621 Pécs, Hungary; (P.C.); (Á.S.)
- National Laboratory on Human Reproduction, University of Pécs, 7624 Pécs, Hungary;
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Sperm factors associated with the production of equine blastocysts by intracytoplasmic sperm injection (ICSI) using frozen/thawed semen. Theriogenology 2023; 195:85-92. [DOI: 10.1016/j.theriogenology.2022.10.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 09/30/2022] [Accepted: 10/11/2022] [Indexed: 11/07/2022]
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Rodriguez-Martinez H, Roca J. Extracellular vesicles in seminal plasma: A safe and relevant tool to improve fertility in livestock? Anim Reprod Sci 2022; 244:107051. [PMID: 35933831 DOI: 10.1016/j.anireprosci.2022.107051] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 07/18/2022] [Accepted: 08/01/2022] [Indexed: 11/01/2022]
Abstract
Seminal plasma (SP) is not a pre-requisite for pregnancy. Yet, this heterogeneous, composite SP has proven relevant for fertility, as mediator for cell-to-cell communication between producing cells, spermatozoa and the female internal genital tract, regulating complex reproductive processes. Bearing hormones, proteins, cytokines as well as nuclei acids in nano-sized lipid bilayer seminal extracellular vesicles (sEVs), the SP concerts signaling to the female. Signals influence timing of ovulation, sperm transport and, particularly, enable the female immune system to balance her cryptic choice to engage into pregnancy or reject an eventual fertilization. This essay, focusing on livestock in general and pigs in particular, discusses the intrinsic roles of sEVs with regards to reproductive homeostasis, while binding and internalizing their cargo in spermatozoa and female tract epithelia to regulate their functional activity. Since prior studies had inconclusive results using bulk SP or single SP-contained free molecules, argumentation is hereby provided to increase the current incipient research on livestock sEVs, where fragile molecules relevant for fertility are shielded from degradation during handling. Seminal EVs isolated from SP can be used for andrological diagnosis and perhaps to select breeders with optimal fertility. Moreover, sEVs can be laboratory-uploaded with specific molecules or even engineered as lipid nanodroplets used as additives for extenders to improve fertility after artificial insemination (AI) or reproductive biotechnologies.
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Affiliation(s)
- Heriberto Rodriguez-Martinez
- Department of Biomedical & Clinical Sciences (BKV), BKH/Obstetrics & Gynecology, Faculty of Medicine and Health Sciences, Linköping University, SE-58185 Linköping, Sweden.
| | - Jordi Roca
- Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research "Campus Mare Nostrum", University of Murcia, Murcia, Spain
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Rodriguez-Martinez H, Martinez EA, Calvete JJ, Peña Vega FJ, Roca J. Seminal Plasma: Relevant for Fertility? Int J Mol Sci 2021; 22:ijms22094368. [PMID: 33922047 PMCID: PMC8122421 DOI: 10.3390/ijms22094368] [Citation(s) in RCA: 59] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 04/18/2021] [Accepted: 04/20/2021] [Indexed: 02/06/2023] Open
Abstract
Seminal plasma (SP), the non-cellular component of semen, is a heterogeneous composite fluid built by secretions of the testis, the epididymis and the accessory sexual glands. Its composition, despite species-specific anatomical peculiarities, consistently contains inorganic ions, specific hormones, proteins and peptides, including cytokines and enzymes, cholesterol, DNA and RNA-the latter often protected within epididymis- or prostate-derived extracellular vesicles. It is beyond question that the SP participates in diverse aspects of sperm function pre-fertilization events. The SP also interacts with the various compartments of the tubular genital tract, triggering changes in gene function that prepares for an eventual successful pregnancy; thus, it ultimately modulates fertility. Despite these concepts, it is imperative to remember that SP-free spermatozoa (epididymal or washed ejaculated) are still fertile, so this review shall focus on the differences between the in vivo roles of the SP following semen deposition in the female and those regarding additions of SP on spermatozoa handled for artificial reproduction, including cryopreservation, from artificial insemination to in vitro fertilization. This review attempts, including our own results on model animal species, to critically summarize the current knowledge of the reproductive roles played by SP components, particularly in our own species, which is increasingly affected by infertility. The ultimate goal is to reconcile the delicate balance between the SP molecular concentration and their concerted effects after temporal exposure in vivo. We aim to appraise the functions of the SP components, their relevance as diagnostic biomarkers and their value as eventual additives to refine reproductive strategies, including biotechnologies, in livestock models and humans.
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Affiliation(s)
- Heriberto Rodriguez-Martinez
- Department of Biomedical & Clinical Sciences (BKV), BKH/Obstetrics & Gynaecology, Faculty of Medicine and Health Sciences, Linköping University, SE-58185 Linköping, Sweden
- Correspondence: ; Tel.: +46-132-869-25
| | - Emilio A. Martinez
- Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (E.A.M.); (J.R.)
| | - Juan J. Calvete
- Laboratorio de Venómica Estructural y Funcional, Instituto de Biomedicina de Valencia, C.S.I.C., 46010 Valencia, Spain;
| | - Fernando J. Peña Vega
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, 10003 Caceres, Spain;
| | - Jordi Roca
- Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, International Excellence Campus for Higher Education and Research “Campus Mare Nostrum”, University of Murcia, 30100 Murcia, Spain; (E.A.M.); (J.R.)
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Vieira LA, Matás C, Torrecillas A, Saez F, Gadea J. Seminal plasma components from fertile stallions involved in the epididymal sperm freezability. Andrology 2020; 9:728-743. [PMID: 33185013 DOI: 10.1111/andr.12944] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 11/03/2020] [Accepted: 11/05/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND Seminal plasma (SP) plays a crucial role in sperm protection and functionality. However, the effect of SP on the sperm cryopreservation is dependent on the stallion and SP composition. The use of epididymal spermatozoa incubated in the presence of SP could help the identification of the components of SP that are able to confer protection upon the spermatozoa during freezing. OBJECTIVE The aims of this study were (i) to identify SP components involved in the potential protection of epididymal spermatozoa during the freeze-thawing process and (ii) to identify and evaluate the proteins likely related to sperm freezability, using two-dimensional difference gel electrophoresis (2D-DIGE). MATERIALS AND METHODS Epididymal spermatozoa from 4 stallions were incubated with SP (80%, v/v) or without SP (control) before freezing. Sperm parameters were evaluated after thawing (viability, chromatin condensation, acrosomal integrity, reactive oxygen species [ROS]) and SP composition: total antioxidant capacity (TAC), fatty acid composition, total protein concentration, and protein components by 2D-DIGE. RESULTS After thawing, the proportions of viable and acrosome-intact spermatozoa were higher than control when SP from two stallions was used (F and O). The SP of all stallions reduced ROS production in comparison with the control. After analyzing the SP components, it was found that total protein concentration, TAC, polyunsaturated fatty acids (PUFA), and eight specific proteins identified by 2D-DIGE were different between stallions. DISCUSSION These studies allow the identification of SP components that could be involved in sperm protection or cryotolerance. Use of this information could help in the selection of stallions according to their semen freezing capacity. CONCLUSION The composition of the SP probably contributes to semen cryotolerance capacity. Total protein, TAC, PUFA, and some proteins such as cysteine-rich secreted protein 3 could be used as biomarkers for the selection for sperm cryotolerance.
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Affiliation(s)
- Luis Alberto Vieira
- Department of Physiology, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain.,Institute for Biomedical Research of Murcia IMIB-Arrixaca, Murcia, Spain
| | - Carmen Matás
- Department of Physiology, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain.,Institute for Biomedical Research of Murcia IMIB-Arrixaca, Murcia, Spain
| | | | - Fara Saez
- Research Support Service, University of Murcia, Murcia, Spain
| | - Joaquín Gadea
- Department of Physiology, International Excellence Campus for Higher Education and Research (Campus Mare Nostrum), University of Murcia, Murcia, Spain.,Institute for Biomedical Research of Murcia IMIB-Arrixaca, Murcia, Spain
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Abstract
Since bull fertility may be adversely affected by hot humid conditions, the current increase in global temperature is of concern for future livestock production. Heat stress occurs when the body's normal physiological mechanisms to regulate body temperature cannot cope with external conditions. The testes and scrotum have their own complex regulatory mechanisms to protect developing sperm during their most vulnerable stages, but even these may be overwhelmed by unfavourable external conditions. The effects of mild, moderate and severe heat stress are somewhat different, with cattle exposed to mild and moderate heat stress apparently showing an adverse effect on fertility, whereas cattle in very hot, humid climates almost continuously may not exhibit any difference in sperm quality throughout the year. This apparent paradox may be due to differences in the cattle populations being studied, since they could differ in breed, age, purpose (beef versus dairy), or even in the methods used to assess sperm quality. The adverse effects on fertility may occur through the effects of reactive oxygen species on sperm DNA, or through perturbation of the production of antioxidants that usually protect sperm from oxidative attack. These effects can be mitigated to some extent by choosing breed and age of bulls with care, and adopting breeding strategies that avoid semen collection or ejaculation at the most adverse times of year. Husbandry measures such as controlled ventilation, misting, provision of shade or cool surfaces for lying down, could aid temperature regulation. Avoiding heat stress during late pregnancy aids calf growth in early life; careful feeding regimens for young bull calves create good conditions for sperm quality after puberty. Bull fertility is too important to be left to chance. Breeds should be chosen according to climate conditions and the purpose of livestock production.
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Miró J, Morató R, Vilagran I, Taberner E, Bonet S, Yeste M. Preservation of Epididymal Stallion Sperm in Liquid and Frozen States: Effects of Seminal Plasma on Sperm Function and Fertility. J Equine Vet Sci 2020; 88:102940. [PMID: 32303324 DOI: 10.1016/j.jevs.2020.102940] [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: 07/31/2019] [Revised: 11/11/2019] [Accepted: 01/22/2020] [Indexed: 01/13/2023]
Abstract
Three separate experiments were conducted to improve preservation of stallion epididymal sperm. In the first one, two different cooling extenders (Kenney and Gent) were compared. Sperm viability and motility patterns were assessed in 10 different epididymal sperm samples after 0 hours, 24 hours, 48 hours, 72 hours, and 96 hours of preservation at 4°C. No significant differences were observed in any of the evaluated parameters either between extenders or throughout the storage period. The second set of experiments was designed to determine whether supplementing thawing medium (INRA Freeze) with seminal plasma had any impact on the quality of frozen-thawed epididymal sperm. Ten epididymal frozen-thawed sperm samples coming from separate stallions were used and different functional parameters (sperm membrane integrity and lipid disorder, motility, intracellular Ca2+ levels, and intracellular concentrations of peroxides and superoxides) were evaluated after incubation with or without 50% seminal plasma. Supplementing thawing medium with seminal plasma had no impact on sperm function and survival. The third experiment was an in vivo study. Twenty-five mares were inseminated with epididymal frozen-thawed sperm and seminal plasma, and 21 were bred with epididymal frozen-thawed sperm only. Pregnancy rates obtained for mares artificially inseminated with epididymal frozen-thawed sperm and seminal plasma were significantly (P < .05) higher than those observed when seminal plasma was not infused (64% vs. 19%). Taken together, our data indicate that the quality of epididymal stallion sperm can be maintained at 4°C for up to 96 hours. In addition, not only does supplementing frozen-thawed epididymal sperm with seminal plasma have any damaging effect on their quality but it may also improve pregnancy rates after artificial insemination.
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Affiliation(s)
- Jordi Miró
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain.
| | - Roser Morató
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain; Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, Girona, Spain
| | - Ingrid Vilagran
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, Girona, Spain
| | - Ester Taberner
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Barcelona, Spain
| | - Sergi Bonet
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, Girona, Spain
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Department of Biology, Institute of Food and Agricultural Technology, University of Girona, Girona, Spain
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Papas M, Catalán J, Fernandez-Fuertes B, Arroyo L, Bassols A, Miró J, Yeste M. Specific Activity of Superoxide Dismutase in Stallion Seminal Plasma Is Related to Sperm Cryotolerance. Antioxidants (Basel) 2019; 8:E539. [PMID: 31717586 PMCID: PMC6912747 DOI: 10.3390/antiox8110539] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/06/2019] [Accepted: 11/07/2019] [Indexed: 01/02/2023] Open
Abstract
While the removal of seminal plasma is a routine practice prior to equine sperm cryopreservation, this fluid contains the main source of antioxidant enzymes able to scavenge these reactive oxygen species. Therefore, stallion seminal plasma components may have an impact on ejaculate freezability. Against this background, this study was designed to investigate whether the activities of the main stallion seminal plasma antioxidant enzymes are related to sperm cryotolerance. With this purpose, 16 ejaculates were collected from 14 healthy stallions, and each ejaculate was split into two aliquots. The first one was used to evaluate the activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPX), and glutathione reductase (GSR) in seminal plasma. The second aliquot was extended and then processed for cryopreservation. Sperm motility and viability were evaluated before and after cryopreservation, and ejaculates were classified as of good (GFE) or poor freezability (PFE) based on total motile and viable spermatozoa at post-thaw. We observed that, while the specific activities of CAT, GPX, and GSR were similar between GFE and PFE, that of SOD was significantly (p < 0.05) higher in GFE than in PFE. We can thus conclude that, in stallions, the specific activity of SOD in the seminal plasma of a given ejaculate might be related to its freezability.
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Affiliation(s)
- Marion Papas
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, E-08193 Bellaterra, Spain; (M.P.); (J.C.)
| | - Jaime Catalán
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, E-08193 Bellaterra, Spain; (M.P.); (J.C.)
| | - Beatriz Fernandez-Fuertes
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Unit of Cell Biology, Department of Biology, Institute of Food and Agricultural Technology, Faculty of Sciences, University of Girona, E-17003 Girona, Spain;
| | - Laura Arroyo
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Sciences, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain; (L.A.); (A.B.)
| | - Anna Bassols
- Department of Biochemistry and Molecular Biology, Faculty of Veterinary Sciences, Universitat Autònoma de Barcelona, E-08193 Bellaterra, Spain; (L.A.); (A.B.)
| | - Jordi Miró
- Equine Reproduction Service, Department of Animal Medicine and Surgery, Faculty of Veterinary Sciences, Autonomous University of Barcelona, E-08193 Bellaterra, Spain; (M.P.); (J.C.)
| | - Marc Yeste
- Biotechnology of Animal and Human Reproduction (TechnoSperm), Unit of Cell Biology, Department of Biology, Institute of Food and Agricultural Technology, Faculty of Sciences, University of Girona, E-17003 Girona, Spain;
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11
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Abstract
Artificial insemination (AI) is widely used for livestock breeding. Although sperm cryopreservation is the most efficient method for long-term storage, its use for porcine AI is marginal, because of its dramatic impact on sperm quality. While the removal of seminal plasma is a routine practice prior to porcine sperm cryopreservation, its beneficial role on sperm function has not been investigated in as much detail. In this context and despite seminal plasma being regarded as a mere vehicle of sperm, mounting evidence indicates that it could be positive for porcine sperm fertility. In effect, not only is seminal plasma able to interact with the female reproductive tract after mounting/insemination, but it has been demonstrated it modulates sperm function. For this reason, the composition of this fluid and its proteome have begun to be investigated in order to elucidate whether its components play any role in sperm function, fertility and cryotolerance. Previous research has demonstrated that seminal plasma may maintain the quality and fertilizing ability of frozen-thawed boar spermatozoa when added before or after cryopreservation. However, a large variety of results have been reported with both beneficial and detrimental effects, including studies in which no influence has been observed. This review examines the composition of porcine seminal plasma and summarizes the available published studies regarding seminal plasma supplementation to spermatozoa before or after freeze-thawing. The take-home message of this article is that clearing up the role of seminal plasma in sperm cryotolerance may increase the reproductive performance of frozen-thawed boar spermatozoa.
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Serafini R, Varner D, Blanchard T, Teague S, LaCaze K, Love C. Effects of seminal plasma and flash-freezing on DNA structure of stallion epididymal sperm exposed to different potentiators of DNA damage. Theriogenology 2018; 117:34-39. [DOI: 10.1016/j.theriogenology.2018.05.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 05/17/2018] [Accepted: 05/18/2018] [Indexed: 02/06/2023]
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13
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Binder of Sperm Proteins protect ram spermatozoa from freeze-thaw damage. Cryobiology 2018; 82:78-87. [DOI: 10.1016/j.cryobiol.2018.04.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/09/2018] [Accepted: 04/09/2018] [Indexed: 01/21/2023]
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14
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Mislei B, Merlo B, Asta D, Iacono E, Love CC, Mari G. Effects of Two Different Cooling Devices for Testicles Transport on Stallion Epididymal Sperm Quality. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.07.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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15
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Stawicki R, McDonnell S, Giguère S, Turner R. Pregnancy outcomes using stallion epididymal sperm stored at 5 °C for 24 or 48 hours before harvest. Theriogenology 2016; 85:698-702. [DOI: 10.1016/j.theriogenology.2015.10.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Revised: 10/05/2015] [Accepted: 10/06/2015] [Indexed: 11/17/2022]
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16
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Reinhardt K, Dobler R, Abbott J. An Ecology of Sperm: Sperm Diversification by Natural Selection. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2015. [DOI: 10.1146/annurev-ecolsys-120213-091611] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Using basic ecological concepts, we introduce sperm ecology as a framework to study sperm cells. First, we describe environmental effects on sperm and conclude that evolutionary and ecological research should not neglect the overwhelming evidence presented here (both in external and internal fertilizers and in terrestrial and aquatic habitats) that sperm function is altered by many environments, including the male environment. Second, we determine that the evidence for sperm phenotypic plasticity is overwhelming. Third, we find that genotype-by-environment interaction effects on sperm function exist, but their general adaptive significance (e.g., local adaptation) awaits further research. It remains unresolved whether sperm diversification occurs by natural selection acting on sperm function or by selection on male and female microenvironments that enable optimal plastic performance of sperm (sperm niches). Environmental effects reduce fitness predictability under sperm competition, predict species distributions under global change, explain adaptive behavior, and highlight the role of natural selection in behavioral ecology and reproductive medicine.
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Affiliation(s)
- Klaus Reinhardt
- Applied Zoology, Department of Biology, Technische Universität Dresden, 01062 Dresden, Germany;,
| | - Ralph Dobler
- Applied Zoology, Department of Biology, Technische Universität Dresden, 01062 Dresden, Germany;,
| | - Jessica Abbott
- Department of Biology, Lund University, 223 62 Lund, Sweden
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17
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Yeste M. Sperm cryopreservation update: Cryodamage, markers, and factors affecting the sperm freezability in pigs. Theriogenology 2015; 85:47-64. [PMID: 26506124 DOI: 10.1016/j.theriogenology.2015.09.047] [Citation(s) in RCA: 225] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 09/20/2015] [Accepted: 09/22/2015] [Indexed: 02/04/2023]
Abstract
Cryopreservation is the most efficient method for long-term preservation of mammalian sperm. However, freeze-thawing procedures may strongly impair the sperm function and survival and thus decrease the reproductive performance. In addition, the sperm resilience to withstand cryopreservation, also known as freezability, presents a high individual variability. The present work summarizes the principles of cryoinjury and the relevance of permeating and nonpermeating cryoprotective agents. Descriptions about sperm cryodamage are mainly focused on boar sperm, but reference to other mammalian species is also made when relevant. Main cryoinjuries not only regard to sperm motility and membrane integrity, but also to the degradation effect exerted by freeze-thawing on other important components for sperm fertilizing ability, such as mRNAs. After delving into the main differences between good and poor freezability boar ejaculates, those protein markers predicting the sperm ability to sustain cryopreservation are also mentioned. Moreover, factors that may influence sperm freezability, such as season, diet, breed, or ejaculate fractions are discussed, together with the effects of different additives, like seminal plasma and antioxidants. After briefly referring to the effects of long-term sperm preservation in frozen state and the reproductive performance of frozen-thawed boar sperm, this work speculates with new research horizons on the preservation of boar sperm, such as vitrification and freeze-drying.
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Affiliation(s)
- Marc Yeste
- Nuffield Department of Obstetrics and Gynaecology, University of Oxford, Level 3, Women's Centre, John Radcliffe Hospital, Oxford, UK.
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18
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Neuhauser S, Dörfel S, Handler J. Dose-dependent effects of homologous seminal plasma on motility and kinematic characteristics of post-thaw stallion epididymal spermatozoa. Andrology 2015; 3:536-43. [DOI: 10.1111/andr.12003] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2014] [Revised: 10/27/2014] [Accepted: 11/28/2014] [Indexed: 12/14/2022]
Affiliation(s)
- S. Neuhauser
- Pferdezentrum Bad Saarow; Equine Reproduction Unit; Freie Universität Berlin; Bad Saarow Germany
| | - S. Dörfel
- Pferdezentrum Bad Saarow; Equine Reproduction Unit; Freie Universität Berlin; Bad Saarow Germany
| | - J. Handler
- Pferdezentrum Bad Saarow; Equine Reproduction Unit; Freie Universität Berlin; Bad Saarow Germany
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Pukazhenthi BS, Johnson A, Guthrie HD, Songsasen N, Padilla LR, Wolfe BA, Coutinho da Silva M, Alvarenga MA, Wildt DE. Improved sperm cryosurvival in diluents containing amides versus glycerol in the Przewalski's horse (Equus ferus przewalskii). Cryobiology 2014; 68:205-14. [PMID: 24508651 DOI: 10.1016/j.cryobiol.2014.01.013] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2013] [Revised: 01/21/2014] [Accepted: 01/27/2014] [Indexed: 10/25/2022]
Abstract
Two studies were conducted to understand sperm cryosensitivity in an endangered equid, the Przewalski's horse (Equus ferus przewalski), while testing the cryoprotectant ability of formamides. The first assessed the toxicity of permeating cryoprotectants (glycerol, methylformamide [MF] and dimethylformamide [DMF]) to Przewalski's horse spermatozoa during liquid storage at 4°C. The second examined the comparative influence of three diluents (with or without formamides) on cryosurvival of sperm from the Przewalski's versus domestic horse. When Przewalski's horse spermatozoa were incubated at 4°C in INRA 96 with differing concentrations of glycerol, MF or DMF or a combination of these amides, cells tolerated all but the highest concentration (10% v/v) of MF alone or in combination with DMF, both of which decreased (P<0.05) motility traits. There was no effect of cryoprotectants on sperm acrosomal integrity. In the cryosurvival study, average sperm motility and proportion of cells with intact acrosomes in fresh ejaculates were similar (P>0.05) between the Przewalski's (67%, 84%, respectively) and domestic (66%, 76%) horse donors. Sperm from both species were diluted in lactose-EDTA-glycerol (EQ), Botu-Crio (BOTU; a proprietary product containing glycerol and MF) or SM (INRA 96 plus 2% [v/v] egg yolk and 2.5% [v/v] MF and DMF) and then frozen over liquid nitrogen vapor. After thawing, the highest values recovered for total and progressive sperm motility, acrosomal integrity and mitochondrial membrane potential were 42.4%, 21.8%, 88.7% and 25.4CN (CN=mean JC-1 fluorescence intensity/cell on a channel number scale), respectively, in the Przewalski's and 49.3%, 24.6%, 88.9% and 25.8CN, respectively, in the domestic horse. Although sperm progressive motility and acrosome integrity did not differ (P>0.05) among treatments across species, mitochondrial membrane potential was higher (P<0.05) in both species using EQ compared to BOTU or SM media. Additionally, Przewalski's stallion sperm expressed higher (P<0.05) post-thaw total motility in BOTU and SM compared to EQ, whereas there were no differences among freezing diluents in the domestic horse. In summary, Przewalski's stallion sperm benefit from exposure to either MF or DMF as an alternative cryoprotectant to glycerol. Overt sperm quality appears similar between the Przewalski's and domestic horse, although the total motility of cells from the former appears more sensitive to certain freezing diluents. Nonetheless, post-thaw motility and acrosomal integrity values for Przewalski's horse spermatozoa mimic findings in the domestic horse in the presence of INRA 96 supplemented with 2% (v/v) egg yolk and a combined 2.5% concentration of MF and DMF.
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Affiliation(s)
- Budhan S Pukazhenthi
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA 22630, United States.
| | - Aime Johnson
- Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849, United States.
| | - H David Guthrie
- Animal Biosciences and Biotechnology Laboratory, Agricultural Research Service, U.S. Department of Agriculture, Beltsville, MD 20705, United States.
| | - Nucharin Songsasen
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA 22630, United States.
| | - Luis R Padilla
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA 22630, United States.
| | | | - Marco Coutinho da Silva
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, Columbus, OH 43210, United States.
| | - Marco A Alvarenga
- Department of Animal Reproduction and Veterinary Radiology, School of Veterinary Medicine, São Paulo State University, UNESP, Botucatu, São Paulo, Brazil.
| | - David E Wildt
- Smithsonian Conservation Biology Institute, National Zoological Park, Front Royal, VA 22630, United States.
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20
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Mota Filho AC, Silva HV, Freitas LA, Nunes TG, Araújo AA, Silva LD. Refrigeração do epidídimo canino a 4ºC e recuperação dos espermatozoides epididimários utilizando ACP-106c. PESQUISA VETERINARIA BRASILEIRA 2013. [DOI: 10.1590/s0100-736x2013000900018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Objetivou-se avaliar a qualidade dos espermatozoides recuperados da cauda do epidídimo após a refrigeração do complexo testículo-epidídimo (CTE) de cães usando o diluidor ACP-106c. Foram utilizados 60 cães machos adultos, com peso de 10-20 kg. Após a eutanásia, removeu-se o CTE que foi imerso em solução fisiológica 0,9% e transportado em caixa térmica ao laboratório a 30ºC. Para a refrigeração e recuperação dos espermatozoides epididimários, os 60 pares do CTE foram divididos em 4 grupos, de acordo com o tempo de refrigeração do CTE e posterior recuperação espermática: G0h, G6h, G12h e G18h, em que cada par do CTE permaneceu por zero, seis, doze ou dezoito horas a 4ºC, respectivamente. A recuperação dos espermatozoides da cauda do epidídimo foi realizada pela técnica de flutuação utilizando-se o diluidor ACP-106c ou Tris. Para cada epidídimo foi adicionado 1,0 mL de um dos dois diluidores, pré-aquecidos a 37ºC por 5 minutos. Em seguida foram centrifugados a 800g/5 minutos para remoção dos resíduos celulares. Avaliou-se a morfologia, funcionalidade e motilidade espermática total e progressiva, além de parâmetros obtidos pelo CASA. Os dados foram submetidos à ANOVA seguido do teste de Turkey (P < 0,05). Em todos os parâmetros avaliados, não houve diferença entre os diluidores testados (P>0,05). Os valores de motilidade total nos grupos G0h, G6h, G12h, e G18h para o ACP-106c foram 84,4±7,7; 81,6±11,6; 88,3±6,5 e 69,5±16,9, respectivamente, e para o Tris 85,2±8,7; 77,4±14,3; 79,0±17,8 e 65,4±17,9, respectivamente. Um decréscimo na qualidade espermática foi observado após 18 horas de refrigeração em ambos os diluidores. Dessa forma pode-se concluir que o ACP-106c pode ser utilizado para recuperar os espermatozoides epididimários refrigerados e podem ser viáveis por até 12h de refrigeração.
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Comparison of Apoptotic Cells Between Cryopreserved Ejaculated Sperm and Epididymal Sperm in Stallions. J Equine Vet Sci 2013. [DOI: 10.1016/j.jevs.2012.08.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Vieira L, Gadea J, García-Vázquez F, Avilés-López K, Matás C. Equine spermatozoa stored in the epididymis for up to 96h at 4°C can be successfully cryopreserved and maintain their fertilization capacity. Anim Reprod Sci 2013. [DOI: 10.1016/j.anireprosci.2012.10.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Rota A, Panzani D, Sabatini C, Camillo F. Donkey jack (Equus asinus) semen cryopreservation: studies of seminal parameters, post breeding inflammatory response, and fertility in donkey jennies. Theriogenology 2012; 78:1846-54. [PMID: 22979965 DOI: 10.1016/j.theriogenology.2012.07.015] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Revised: 07/03/2012] [Accepted: 07/15/2012] [Indexed: 10/27/2022]
Abstract
The aims of this study were (1) to evaluate motility parameters of donkey jack (jack; Equus asinus) semen cryopreserved in INRA-96 (INRA; IMV Technologies, France, 2% egg-yolk enriched) using either glycerol (GLY) or ethylene glycol (EG) as a cryoprotector; (2) to compare in vitro the postthaw re-extension with homologous seminal plasma (SPL) or INRA; (3) to compare fertility in donkey jennies (jennies; Equus asinus) timed artificially inseminated with jack semen cryopreserved using GLY or EG, re-extended with INRA; (4) to compare fertility in jennies timed artificially inseminated with jack semen cryopreserved using GLY re-extended with SPL, INRA, or not re-extended (NN); and (5) to describe some preliminary results of the inflammatory uterine response postbreeding. Semen from two jacks was collected and frozen in an INRA-2% egg yolk extender added of either 2.2% GLY or 1.4% EG. Postthaw motility was evaluated by a computer-assisted motility analyzer. Uterine inflammatory response and fertility were evaluated after artificial insemination (AI) of 13 jennies with frozen-thawed semen, either further extended with INRA (Group GLY-INRA, 13 cycles, and EG-INRA, 8 cycles), or with SPL (Group GLY-SPL, 13 cycles), or not re-extended (GLY-NN, 5 cycles). In each cycle, jennies were bred twice with 500 × 10(6) sperm cells (250 × 10(6) from each jack), at fixed times after induction of ovulation, and uterus was flushed at 6 and 10 h after first and second breeding, respectively. Cells in the recovered fluid were counted and distinguished as polymorphonuclear neutrophils (PMN) or other cell types. Total and progressive motility did not differ between cryoprotectants, but were higher when semen samples were re-extended in INRA, compared with SPL (P < 0.05). Pregnancy was diagnosed by transrectal palpation and ultrasonography examinations at 14 and 16 days postovulation. In 7/13 (53.8%) jennies and 12/39 (30.4%) cycles postbreeding intrauterine fluid accumulation was observed, with no differences between treatments (P < 0.05). Polymorphonuclear neutrophil numbers and concentrations were higher in the first flushing compared with the second, and PMN concentration was higher in GLY-SPL than in GLY-INRA (P < 0.05). Pregnancy rates in GLY-SPL, GLY-INRA, EG-INRA, and GLY-NN were 8/13, 3/13, 2/8, and 1/5, respectively. There was no significant difference either between the two cryoprotectants re-extended in INRA, or between re-extension groups. There was however a trend for GLY-SPL to improve pregnancy rates compared with GLY-INRA (P = 0.055). These results indicate that it is possible to obtain similar postthaw sperm motility and pregnancy rates using GLY or EG as a cryoprotectant for donkey semen, and that in the conditions of this study the re-extension in SPL of thawed semen before AI showed a trend toward the improvement of fertility and increased PMN concentration in uterine flushings.
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Affiliation(s)
- A Rota
- Dipartimento di Clinica Veterinaria, Università di Pisa, Pisa, Italy.
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Smits K, Hoogewijs M, Woelders H, Daels P, Van Soom A. Breeding or Assisted Reproduction? Relevance of the Horse Model Applied to the Conservation of Endangered Equids. Reprod Domest Anim 2012; 47 Suppl 4:239-48. [DOI: 10.1111/j.1439-0531.2012.02082.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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TOYONAGA M, TSUTSUI T. The Quality of Cryopreserved Sperm Collected from Feline Caudal Epididymides Using Seminal Plasma. J Vet Med Sci 2012; 74:1349-53. [DOI: 10.1292/jvms.11-0175] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Mari TOYONAGA
- Department of Reproduction, Nippon Veterinary and Life Science University
- International Institute of Small Animal Medicine, Bio Plus, AHB Inc
- Department of Reproduction, Nippon Veterinary and Life Science University, 1–7–1 Kyonan-cho, Musashino-shi, Tokyo 180–8602, Japan
- International Institute of Small Animal Medicine, Bio Plus, AHB Inc., 2–7–2 Sumiyoshi, Koutou-ku, Tokyo 135–0002, Japan
| | - Toshihiko TSUTSUI
- Department of Reproduction, Nippon Veterinary and Life Science University
- International Institute of Small Animal Medicine, Bio Plus, AHB Inc
- Department of Reproduction, Nippon Veterinary and Life Science University, 1–7–1 Kyonan-cho, Musashino-shi, Tokyo 180–8602, Japan
- International Institute of Small Animal Medicine, Bio Plus, AHB Inc., 2–7–2 Sumiyoshi, Koutou-ku, Tokyo 135–0002, Japan
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Gloria A, Contri A, De Amicis I, Robbe D, Carluccio A. Differences between epididymal and ejaculated sperm characteristics in donkey. Anim Reprod Sci 2011; 128:117-22. [DOI: 10.1016/j.anireprosci.2011.09.007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2011] [Revised: 09/15/2011] [Accepted: 09/18/2011] [Indexed: 10/17/2022]
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27
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Monteiro G, Papa F, Zahn F, Dellaqua J, Melo C, Maziero R, Avanzi B, Alvarenga M, Guasti P. Cryopreservation and fertility of ejaculated and epididymal stallion sperm. Anim Reprod Sci 2011; 127:197-201. [DOI: 10.1016/j.anireprosci.2011.08.002] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 07/22/2011] [Accepted: 08/01/2011] [Indexed: 10/17/2022]
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Mari G, Castagnetti C, Rizzato G, Mislei B, Iacono E, Merlo B. Density gradient centrifugation of sperm from a subfertile stallion and effect of seminal plasma addition on fertility. Anim Reprod Sci 2011; 126:96-100. [DOI: 10.1016/j.anireprosci.2011.04.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2011] [Revised: 04/12/2011] [Accepted: 04/26/2011] [Indexed: 10/18/2022]
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Heise A, Thompson P, Gerber D. Influence of seminal plasma on fresh and post-thaw parameters of stallion epididymal spermatozoa. Anim Reprod Sci 2011; 123:192-201. [DOI: 10.1016/j.anireprosci.2010.11.017] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2010] [Revised: 11/17/2010] [Accepted: 11/30/2010] [Indexed: 11/30/2022]
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30
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Alghamdi AS, Funnell BJ, Bird SL, Lamb GC, Rendahl AK, Taube PC, Foster DN. Comparative studies on bull and stallion seminal DNase activity and interaction with semen extender and spermatozoa. Anim Reprod Sci 2010; 121:249-58. [DOI: 10.1016/j.anireprosci.2010.06.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2009] [Revised: 06/08/2010] [Accepted: 06/14/2010] [Indexed: 10/19/2022]
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