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Pardede BP, Kusumawati A, Pangestu M, Purwantara B. Bovine sperm HSP-70 molecules: a potential cryo-tolerance marker associated with semen quality and fertility rate. Front Vet Sci 2023; 10:1167594. [PMID: 37621869 PMCID: PMC10445158 DOI: 10.3389/fvets.2023.1167594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 07/20/2023] [Indexed: 08/26/2023] Open
Abstract
Introduction Freezability is the ability of sperm to maintain its vitality and quality from various stress during the cryopreservation process, which is very important for the success of fertilization in AI programs. Heat shock proteins (HSPs) are unique proteins induced in response to various stress, including excess reactive oxygen species (ROS) and oxidative damage to intracellular enzymes that can harm cells. This study aimed to analyze the potential of HSP-70 molecules in bovine sperm as a marker of freezability or cryo-tolerance, as well as its association with semen quality and fertility rate. Methods The classification of bulls is based on freezability (good freezability/GF and poor freezability/PF), which is obtained from the value of post-thaw viability using the SYBR-14/PI-flow cytometry. Semen quality assessed included sperm motility and kinetics (computer-assisted sperm analyses), plasma membrane integrity (HOS test), acrosome integrity (FITC-PNA), mitochondrial membrane (JC-1), and DNA damage (Halomax kit). The bull fertility rate assessment was analyzed based on the first service conception rate of each bull derived from data on the success of artificial insemination contained in the Indonesian-integrated National Animal Health Information System (iSIKHNAS). Gene expression levels of HSP-70 bovine sperm were performed using the RT-qPCR method. The protein abundance of HSP-70 bovine sperm was determined using the enzyme immunoassay (EIA) method. Results Bovine sperm HSP-70 molecules, at the gene and protein level, showed a higher abundance in GF (p < 0.05) than in PF bulls. The percentage of each parameter of frozen-thawed sperm quality was significantly higher in GF (p < 0.05) than in PF bulls. The HSP-70 molecules at the gene and protein levels were significantly positively correlated (p < 0.01) with the fertility rate. Furthermore, HSP-70 molecules were negatively associated (p < 0.01) with low mitochondrial membrane potential and sperm DNA damage and positively correlated (p < 0.01) with other frozen-thawed sperm quality parameters. The overall quality of frozen-thawed sperm was closely related (p < 0.01) to the fertility rate. Conclusion We may conclude that HSP-70 molecules in bovine sperm at the gene and protein level have the potential to be developed as a marker for cryo-tolerance or freezability, which may be utilized as a predictor of fertility and frozen-thawed sperm quality in bulls.
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Affiliation(s)
- Berlin Pandapotan Pardede
- Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University, Bogor, Indonesia
| | - Asmarani Kusumawati
- Department of Reproduction, Obstetrics, and Gynecology, Faculty of Veterinary Medicine, Universitas Gadjah Mada, Yogyakarta, Indonesia
| | - Mulyoto Pangestu
- Department of Obstetrics and Gynecology, School of Clinical Sciences, Faculty of Medicine, Nursing and Health Sciences, Monash University, Victoria, VIC, Australia
| | - Bambang Purwantara
- Division of Reproduction and Obstetrics, School of Veterinary Medicine and Biomedical Sciences, IPB University, Bogor, Indonesia
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Bollwein H, Malama E. Review: Evaluation of bull fertility. Functional and molecular approaches. Animal 2023; 17 Suppl 1:100795. [PMID: 37567681 DOI: 10.1016/j.animal.2023.100795] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/22/2023] [Accepted: 03/23/2023] [Indexed: 08/13/2023] Open
Abstract
With the term "assisted reproduction technologies" in modern cattle farming, one could imply the collection of techniques that aim at the optimal use of bovine gametes to produce animals of high genetic value in a time- and cost-efficient manner. The accurate characterisation of sperm quality plays a critical role for the efficiency of several assisted reproduction-related procedures, such as sperm processing, in vitro embryo production and artificial insemination. Bull fertility is ultimately a collective projection of the ability of a series of ejaculates to endure sperm processing stress, and achieve fertilisation of the oocyte and production of a viable and well-developing embryo. In this concept, the assessment of sperm functional and molecular characteristics is key to bull fertility diagnostics and prognostics. Among others, functional features linked to sperm plasma membrane, acrosome and DNA integrity are usually assessed as a measure of the ability of sperm to express the phenotypes that will allow them to maintain their homeostasis and orchestrate-in a strict temporal manner-the course of events that will enable the delivery of their genetic content to the oocyte upon fertilisation. Nevertheless, measures of sperm functionality are not always adequate indicators of bull fertility. Nowadays, advancements in the field of molecular biology have facilitated the profiling of several biomolecules in male gametes. The molecular profiling of bovine sperm offers a deeper insight into the mechanisms underlying sperm physiology and, thus, can reveal novel candidate markers for bull fertility prognosis. In this review, the importance of three organelles (the nucleus, the plasma membrane and the acrosome) for the characterisation of sperm fertilising capacity and bull fertility is discussed at functional and molecular levels. In particular, information about sperm head morphometry, chromatin structure, viability as well as the ability of sperm to capacitate and undergo the acrosome reaction are presented in relation to the cryotolerance of male gametes and bull fertility. Finally, major spermatozoal coding and non-coding RNAs, and proteins that are involved in the above-mentioned aspects of sperm functionality are also summarised.
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Affiliation(s)
- H Bollwein
- Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland.
| | - E Malama
- Clinic of Reproductive Medicine, Department for Farm Animals, Vetsuisse Faculty, University of Zurich, Winterthurerstrasse 260, 8057 Zurich, Switzerland
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Tripathi UK, Kumaresan A, Saraf KK, Golher DM, Chhillar S, Nayak S, Lathika S, Nag P, Mohanty TK. Seasonal and climatic factors have a significant influence on fertility associated sperm phenomic attributes in crossbred breeding bulls (Bos taurus × Bos indicus). INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2023; 67:311-320. [PMID: 36400976 DOI: 10.1007/s00484-022-02407-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 09/21/2022] [Accepted: 11/08/2022] [Indexed: 06/16/2023]
Abstract
Although seasonal variations in semen quality and fertility have been studied to a considerable extent in breeding bulls, the effect of climatic variables on sperm functional competency has not been understood in detail. The present study analyzed sperm functional parameters in breeding bulls, over a period of 1 year, and assessed the effect of climatic variables on fertility associated sperm parameters. Seasons were categorized into summer, rainy, autumn, and winter based on the meteorological data. Semen was collected from crossbred bulls (n = 7) across the seasons and evaluated for functional membrane integrity, acrosome reaction status, protamine deficiency, capacitation, and lipid peroxidation status using specific fluorescent probes. The results of the present study revealed that bulls produced higher (p < 0.05) viable and acrosome intact spermatozoa during the autumn. The proportion of uncapacitated spermatozoa was also higher (p < 0.05) during autumn. Further, correlation of sperm functional attributes with environmental variables revealed that sperm viability was significantly (p < 0.05) and negatively correlated with daylength and temperature; acrosomal integrity was significantly (p < 0.05) and negatively correlated with day length; and protamine deficiency had significant (p < 0.05) positive correlation with day length and average temperature, and negative correlation with relative humidity. It was concluded that semen produced during autumn was superior to the semen produced during other seasons in terms of sperm functional competencies required for fertility.
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Affiliation(s)
- Utkarsh Kumar Tripathi
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Arumugam Kumaresan
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India.
- Theriogenology Laboratory, Southern Regional Station of ICAR-National Dairy Research Institute, Bengaluru, 560030, Karnataka, India.
| | - Kaustubh Kishor Saraf
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Durgesh Murhari Golher
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Shivani Chhillar
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Samiksha Nayak
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Sreela Lathika
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Pradeep Nag
- Theriogenology Laboratory, Veterinary Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, 132001, Haryana, India
| | - Tushar Kumar Mohanty
- Artificial Breeding Research Centre, National Dairy Research Institute, Karnal, 132001, Haryana, India
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The stallion sperm acrosome: Considerations from a research and clinical perspective. Theriogenology 2023; 196:121-149. [PMID: 36413868 DOI: 10.1016/j.theriogenology.2022.11.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 11/02/2022] [Accepted: 11/07/2022] [Indexed: 11/16/2022]
Abstract
During the fertilization process, the interaction between the sperm and the oocyte is mediated by a process known as acrosomal exocytosis (AE). Although the role of the sperm acrosome on fertilization has been studied extensively over the last 70 years, little is known about the molecular mechanisms that govern acrosomal function, particularly in species other than mice or humans. Even though subfertility due to acrosomal dysfunction is less common in large animals than in humans, the evaluation of sperm acrosomal function should be considered not only as a complementary but a routine test when individuals are selected for breeding potential. This certainly holds true for stallions, which might display lower levels of fertility in the face of "acceptable" sperm quality parameters determined by conventional sperm assays. Nowadays, the use of high throughput technologies such as flow cytometry or mass spectrometry-based proteomic analysis is commonplace in the research arena. Such techniques can also be implemented in clinical scenarios of males with "idiopathic" subfertility. The current review focuses on the sperm acrosome, with particular emphasis on the stallion. We aim to describe the physiological events that lead to the acrosome formation within the testis, the role of very specific acrosomal proteins during AE, the methods to study the occurrence of AE under in vitro conditions, and the potential use of molecular biology techniques to discover new markers of acrosomal function and subfertility associated with acrosomal dysfunction in stallions.
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Štiavnická M, Hošek P, Abril-Parreño L, Kenny DA, Lonergan P, Fair S. Membrane remodulation and hyperactivation are impaired in frozen-thawed sperm of low-fertility bulls. Theriogenology 2023; 195:115-121. [DOI: 10.1016/j.theriogenology.2022.10.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 10/16/2022] [Accepted: 10/18/2022] [Indexed: 11/17/2022]
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Hernández-Avilés C, Castaneda C, Raudsepp T, Varner DD, Love CC. The role of impaired acrosomal exocytosis (IAE) in stallion subfertility: A retrospective analysis of the clinical condition, and an update on its diagnosis by high throughput technologies. Theriogenology 2022; 186:40-49. [DOI: 10.1016/j.theriogenology.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/07/2022] [Accepted: 03/07/2022] [Indexed: 10/18/2022]
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Lavanya M, Selvaraju S, Krishnappa B, Krishnaswamy N, Nagarajan G, Kumar H. Microenvironment of the male and female reproductive tracts regulate sperm fertility: Impact of viscosity, pH, and osmolality. Andrology 2021; 10:92-104. [PMID: 34420258 DOI: 10.1111/andr.13102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2021] [Revised: 08/15/2021] [Accepted: 08/19/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND Terminally differentiated mammalian sperm are exposed to gradients of viscosity, pH, and osmolality both in the male and female reproductive tract during their perilous journey to quest the ovum. The complex physicochemical factors play an integral role in preparing sperm for the fertilization process. OBJECTIVES To elucidate the influence of the reproductive tract microenvironment especially viscosity, pH, and osmolality in regulating sperm functional and fertilization competence. MATERIALS AND METHODS The data used in this review were collected from the research papers and online databases focusing on the influence of viscosity, pH, and osmolality on sperm function. DISCUSSION The gradients of viscosity, pH, and osmolality exist across various segments of the male and female reproductive tract. The changes in the viscosity create a physical barrier, pH aid in capacitation and hyperactivation, and the osmotic stress selects a progressive sperm subpopulation for accomplishing fertilization. The sperm function tests are developed based on the concept that the male genotype is the major contributor to the reproductive outcome. However, recent studies demonstrate the significance of sperm genotype-environment interactions that are essentially contributing to reproductive success. Hence, it is imperative to assess the impact of physicochemical stresses and the adaptive ability of the terminally differentiated sperm, which in turn would improve the outcome of the assisted reproductive technologies and male fertility assessment. CONCLUSION Elucidating the influence of the reproductive tract microenvironment on sperm function provides newer insights into the procedures that need to be adopted for selecting fertile males for breeding, and ejaculates for the assisted reproductive technologies.
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Affiliation(s)
- Maharajan Lavanya
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India.,Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
| | - Sellappan Selvaraju
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | - Balaganur Krishnappa
- Reproductive Physiology Laboratory, Animal Physiology Division, ICAR-National Institute of Animal Nutrition and Physiology, Bengaluru, India
| | | | - Govindasamy Nagarajan
- Southern Regional Research Centre under ICAR-Central Sheep and Wool Research Institute (ICAR-CSWRI), Kodaikanal, India
| | - Harendra Kumar
- Division of Animal Reproduction, ICAR-Indian Veterinary Research Institute, Bareilly, Uttar Pradesh, 243122, India
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Spermatozoa motility, viability, acrosome integrity, mitochondrial membrane potential and plasma membrane integrity in 0.25 mL and 0.5 mL straw after frozen-thawing in Hanwoo bull. JOURNAL OF ANIMAL REPRODUCTION AND BIOTECHNOLOGY 2020. [DOI: 10.12750/jarb.35.4.307] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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9
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Rather HA, Kumaresan A, Nag P, Kumar V, Nayak S, Batra V, Ganaie BA, Baithalu RK, Mohanty TK, Datta TK. Spermatozoa produced during winter are superior in terms of phenotypic characteristics and oviduct explants binding ability in the water buffalo (Bubalus bubalis). Reprod Domest Anim 2020; 55:1629-1637. [PMID: 32945545 DOI: 10.1111/rda.13824] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 09/08/2020] [Indexed: 01/16/2023]
Abstract
Although reduced reproductive efficiency during summer has been well documented in buffaloes, the reason for the same is yet to be understood. The present study was conducted to identify the subtle differences in sperm phenotypic characteristics (motility, membrane integrity, acrosome reaction and lipid peroxidation status), oviduct binding ability and expression of fertility-associated genes (AK 1, ATP5D, CatSper 1, Cytochrome P450 aromatase, SPP1 and PEBP1) between winter and summer seasons in buffaloes. Cryopreserved spermatozoa from 6 Murrah buffalo bulls (3 ejaculates/bull/season) were utilized for the study. Real-time quantitative PCR was performed for assessing the expression patterns of select fertility-associated genes. The proportion of motile and membrane intact spermatozoa was significantly higher (p < .05) in winter as compared to summer ejaculates. The proportion of moribund and lipid peroxidized spermatozoa was significantly lower (p < .05) in winter ejaculates as compared to summer. The sperm-oviduct binding index was significantly lower (p < .01) when spermatozoa from summer ejaculates were used as compared to winter ejaculates. The expression of fertility-associated genes did not differ significantly between the two seasons except for PEPB1; the transcriptional abundance of PEPB1 was significantly (p < .05) lower in summer as compared to winter season. It was inferred that buffalo spermatozoa produced during winter season were superior in terms of cryotolerance, membrane and acrosome integrity, lipid peroxidation status and the ability to bind with oviduct explants.
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Affiliation(s)
- Haneef Ahmad Rather
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Arumugam Kumaresan
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Pradeep Nag
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Vimlesh Kumar
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Samiksha Nayak
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Vipul Batra
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
| | - Bilal Ahmad Ganaie
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Rubina K Baithalu
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Tushar Kumar Mohanty
- Animal Reproduction, Gynaecology and Obstetrics, National Dairy Research Institute, Karnal, India
| | - Tirtha Kumar Datta
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, India
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Narud B, Klinkenberg G, Khezri A, Zeremichael TT, Stenseth EB, Nordborg A, Haukaas TH, Morrell JM, Heringstad B, Myromslien FD, Kommisrud E. Differences in sperm functionality and intracellular metabolites in Norwegian Red bulls of contrasting fertility. Theriogenology 2020; 157:24-32. [PMID: 32777668 DOI: 10.1016/j.theriogenology.2020.07.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/25/2020] [Accepted: 07/06/2020] [Indexed: 02/08/2023]
Abstract
In the dairy breeding industry, prediction of bull fertility in artificial insemination (AI) is important for efficient and economically sustainable production. However, it is challenging to identify bulls with superior fertility applying conventional in vitro sperm assays. In the present study, sperm functionality was investigated to identify a multivariate model that could predict fertility. Two groups of young Norwegian Red bulls were selected, one with inferior fertility (18 bulls) and one with superior fertility (19 bulls) based on non-return rate after 56 days (NR56). Frozen-thawed semen doses were analysed for sperm chromatin integrity, viability, acrosome integrity, motility, and ATP content. A targeted approach was used to study intracellular concentrations of amino acids and trace elements in viable sperm cells. Significant differences between the two groups of bulls were observed, both for sperm functional attributes and intracellular concentrations of metabolites. Pearson correlation analyses indicated a negative relationship between NR56 and chromatin integrity parameters, DNA fragmentation index (DFI) and high DNA stainability (HDS). Several motility parameters correlated positively with NR56. The concentrations of cysteine and glutamic acid in sperm cells correlated negatively with NR56, while the concentrations of aspartic acid, leucine and serine showed a positive NR56-correlation. The sperm intracellular concentrations of the trace elements Fe, Al and Zn, correlated negatively with NR56. Correlations were observed between several sperm parameters and metabolites. Stepwise multiple regression analysis indicated that the best predictor of NR56 was a model containing %DFI, together with the intracellular sperm concentration of aspartic acid, Fe and Zn. This model explained 59% of the variability in NR56.
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Affiliation(s)
- Birgitte Narud
- Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway; Department of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
| | | | - Abdolrahman Khezri
- Department of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
| | - Teklu Tewoldebrhan Zeremichael
- Department of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
| | - Else-Berit Stenseth
- Department of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
| | | | | | - Jane M Morrell
- Department of Clinical Sciences, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Bjørg Heringstad
- Department of Animal and Aquacultural Sciences, Faculty of Biosciences, Norwegian University of Life Sciences, Norway
| | - Frøydis Deinboll Myromslien
- Department of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway
| | - Elisabeth Kommisrud
- Department of Applied Ecology, Agricultural Sciences and Biotechnology, Inland Norway University of Applied Sciences, Hamar, Norway.
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Saraf KK, Kumaresan A, Dasgupta M, Karthikkeyan G, Prasad TSK, Modi PK, Ramesha K, Jeyakumar S, Manimaran A. Metabolomic fingerprinting of bull spermatozoa for identification of fertility signature metabolites. Mol Reprod Dev 2020; 87:692-703. [DOI: 10.1002/mrd.23354] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Accepted: 05/12/2020] [Indexed: 01/29/2023]
Affiliation(s)
- Kaustubh K. Saraf
- Theriogenology LaboratorySouthern Regional Station of ICAR‐National Dairy Research Institute Bengaluru Karnataka India
| | - Arumugam Kumaresan
- Theriogenology LaboratorySouthern Regional Station of ICAR‐National Dairy Research Institute Bengaluru Karnataka India
| | - Mohua Dasgupta
- Theriogenology LaboratorySouthern Regional Station of ICAR‐National Dairy Research Institute Bengaluru Karnataka India
| | - Gayathree Karthikkeyan
- Centre for Systems Biology and Molecular Medicine, Yenepoya Research CentreYenepoya (Deemed to be University) Mangalore Karnataka India
| | | | - Prashant K. Modi
- Centre for Systems Biology and Molecular Medicine, Yenepoya Research CentreYenepoya (Deemed to be University) Mangalore Karnataka India
| | - Kerekoppa Ramesha
- Dairy Production SectionSouthern Regional Station of ICAR‐National Dairy Research Institute Bengaluru Karnataka India
| | - Sakthivel Jeyakumar
- Dairy Production SectionSouthern Regional Station of ICAR‐National Dairy Research Institute Bengaluru Karnataka India
| | - Ayyasamy Manimaran
- Dairy Production SectionSouthern Regional Station of ICAR‐National Dairy Research Institute Bengaluru Karnataka India
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Characterization of antisperm antibody binding patterns in relation to sperm phenotypic attributes and field fertility in dairy bulls. Theriogenology 2020; 141:161-167. [DOI: 10.1016/j.theriogenology.2019.09.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Revised: 08/23/2019] [Accepted: 09/13/2019] [Indexed: 12/26/2022]
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13
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Kutchy NA, Menezes ESB, Ugur MR, Ul Husna A, ElDebaky H, Evans HC, Beaty E, Santos FC, Tan W, Wills RW, Topper E, Kaya A, Moura AA, Memili E. Sperm cellular and nuclear dynamics associated with bull fertility. Anim Reprod Sci 2019; 211:106203. [PMID: 31785643 DOI: 10.1016/j.anireprosci.2019.106203] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Revised: 09/18/2019] [Accepted: 10/09/2019] [Indexed: 11/29/2022]
Abstract
The objective of this study was to ascertain cellular characteristics and the dynamics of the sperm chromatin proteins protamine 1 (PRM1) and protamine 2 (PRM2) in the sperm of Holstein bulls having a different fertility status. Important sperm variables were analyzed using computer-assisted sperm analysis (CASA). Sperm membrane, acrosome status, DNA integrity were also assessed using propidium iodide (PI), fluorescein isothiocyanate conjugated to Arachis hypogaea (FITC-PNA), and acridine orange (AO) followed by flow cytometry. In addition, abundances of PRM1 and PRM2 were analyzed using flow cytometry experiments. Differences in sperm decondensation capacity were assessed in bulls of varying fertility using a decondensation assay. As determined using CASA, average pathway velocity, amplitude of lateral head displacement and straightness were different (P < 0.05) for sperm from high and low fertility bulls. There, however, were no differences between the high and low fertility bulls for characteristics of sperm plasma membrane, acrosome, and DNA integrity (P > 0.05). Relative abundances of PRM1 and PRM2 in sperm from the high and low fertility bulls were inversely related (P < 0.0001). Percentages of decondensed sperm were different between high and low fertility bulls (P < 0.0001) and total numbers of decondensed sperm were greater in low fertility bulls than high fertility bulls (R2 = 0.72). Results of the present study are significant because molecular and morphological phenotypes of sperm that were detected affect fertility in livestock species.
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Affiliation(s)
- Naseer A Kutchy
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA
| | - Erika S B Menezes
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA
| | - Muhammet R Ugur
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA
| | - Asma Ul Husna
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA; Department of Zoology, Pir Mehr Ali Shah Arid Agriculture University, Rawalpindi, Pakistan
| | - Hazem ElDebaky
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA; National Research Center, Cairo, Egypt
| | - Holly C Evans
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA
| | - Emily Beaty
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA
| | - Fagner C Santos
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA; Department of Animal Science, Federal University of Ceara, Fortaleza, Brazil
| | - Wei Tan
- Flow Cytometry Core Facility, College of Veterinary Medicine, Mississippi State University, Mississippi State, MS, USA
| | - Robert W Wills
- Department of Pathobiology and Population Medicine, Mississippi State University, Mississippi State, MS, USA
| | | | - Abdullah Kaya
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, Selcuk University, Konya, Turkey
| | - Arlindo A Moura
- Department of Animal Science, Federal University of Ceara, Fortaleza, Brazil
| | - Erdogan Memili
- Department of Animal and Dairy Sciences, Mississippi State University, Mississippi State, MS, USA.
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Bucher K, Malama E, Siuda M, Janett F, Bollwein H. Multicolor flow cytometric analysis of cryopreserved bovine sperm: A tool for the evaluation of bull fertility. J Dairy Sci 2019; 102:11652-11669. [PMID: 31521361 DOI: 10.3168/jds.2019-16572] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Accepted: 07/11/2019] [Indexed: 01/10/2023]
Abstract
The study aimed at the analysis of the functional status of cryopreserved bovine sperm using multicolor flow cytometry. The value of sperm functional traits as predictors of bull fertility was further evaluated through a retrospective fertility study. For this purpose, 20 Holstein-Friesian bulls serving as mature sperm donors in an artificial insemination (AI) center were selected based on their annual 56-d non-return rate (%) after at least 1,000 AI, and were accordingly classified as high (HF; nHF = 10 bulls) or low fertility bulls (LF; nLF = 10 bulls). Four to 5 cryopreserved ejaculates per bull (91 ejaculates in total) were examined immediately after thawing (0 h) and after a 3-h incubation at 38°C (3 h). A panel of 5 fluorochromes including calcein violet, propidium iodide, pycoerythrin-conjugated lectin of Arachis hypogea, Fluo-4, and cyanine dye DiIC1(5) was configured by means of a 3-laser flow cytometer, to simultaneously assess sperm esterase activity, plasma membrane integrity, acrosomal status, intracellular Ca2+ levels, and mitochondrial membrane potential, respectively. The % relative size of 18 sperm sub-populations showing 2 or more of a combination of the following features was determined: high esterase activity (Cpos), intact plasma membrane (PIneg), unstained acrosome (PNAneg), low intracellular Ca2+ levels (Fneg), and high mitochondrial membrane potential (Mpos). In both fertility groups, Mpos cells comprised more than 90 and 84% of PInegPNAneg sperm at 0 and 3 h, respectively. The percentage of CposPInegPNAnegFnegMpos sperm did not differ between HF and LF ejaculates; however, the percentage of Fneg cells within the PInegPNAneg and PInegMpos sperm populations at 0 h was higher in the HF than in the LF bulls. Applying the random forest ensemble learning method, approximately two-thirds of ejaculates could be correctly assigned to their fertility group. The fraction of Fneg sperm within the PInegMpos population at 0 h was the most important fertility predictor among the 18 defined sperm populations. In conclusion, multicolor flow cytometry offered an insight into the functional heterogeneity of cryopreserved bovine sperm. Indeed, the ability of viable sperm to retain low Ca2+ levels differed between bulls of diverse fertility. A classifier based on selected sperm populations assessed through multicolor flow cytometry could contribute to the prognosis of bull fertility after AI.
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Affiliation(s)
- K Bucher
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich CH-8057, Switzerland
| | - E Malama
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich CH-8057, Switzerland; Veterinary Research Institute, Hellenic Agricultural Organization Demeter, Thermi 57001, Thessaloniki, Greece.
| | - M Siuda
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich CH-8057, Switzerland
| | - F Janett
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich CH-8057, Switzerland
| | - H Bollwein
- Clinic of Reproductive Medicine, Vetsuisse Faculty, University of Zurich, Zurich CH-8057, Switzerland
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15
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Saraf KK, Singh RK, Kumaresan A, Nayak S, Chhillar S, Lathika S, Datta TK, Mohanty TK. Sperm functional attributes and oviduct explant binding capacity differs between bulls with different fertility ratings in the water buffalo (Bubalus bubalis). Reprod Fertil Dev 2019; 31:395-403. [DOI: 10.1071/rd17452] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 07/19/2018] [Indexed: 12/25/2022] Open
Abstract
We report here the differences in sperm functional attributes and sperm–oviduct binding index in bulls with different field fertility ratings. Cryopreserved spermatozoa from Murrah buffalo bulls (n=9) with different fertility ratings were evaluated for membrane integrity, capacitation status, acrosome intactness and protein tyrosine phosphorylation status. Frozen–thawed spermatozoa were incubated with oviduct explants for 1h under 5% CO2, 38.5°C with 95% relative humidity and the number of spermatozoa bound to the unit area of oviduct explants (binding index; BI) was assessed using 5,5′,6,6′-tetrachloro-1,1′,3,3′-tetraethylbenzimidazolyl-carbocyanine iodide (JC-1) fluorescent staining. The proportion of membrane-intact and acrosome-intact spermatozoa was significantly (P<0.05) higher and the proportion of capacitated spermatozoa was significantly (P<0.05) lower in high-fertile bulls compared with medium- and low-fertile bulls. The relationship between BI and bull fertility was significant and positive (r=0.69; P=0.04). BI was negatively and significantly (r=−0.83; P=0.01) related to membrane-compromised spermatozoa. It was concluded that the sperm–oviduct explant binding index was positively related to (1) the proportion of membrane-intact spermatozoa in a given semen sample and (2) invivo fertility of the buffalo bull, indicating the possibility of developing a fertility prediction tool using a sperm–oviduct explant binding model, once validated on a greater number of bulls.
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16
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Kumaresan A, Johannisson A, Bergqvist AS. Sperm function during incubation with oestrus oviductal fluid differs in bulls with different fertility. Reprod Fertil Dev 2018; 29:1096-1106. [PMID: 27112984 DOI: 10.1071/rd15474] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2015] [Accepted: 03/01/2016] [Indexed: 12/11/2022] Open
Abstract
Spermatozoa undergo several modifications in the oviduct before acquiring fertilising capacity. Although spermatozoa are exposed to similar conditions in the oviduct, the speed of the response varies with the male and the state of the spermatozoa. We hypothesised that spermatozoa from bulls with different fertility may differ in their ability to respond to oviductal fluid (ODF). Frozen-thawed spermatozoa from four bulls were incubated with oestrus oviductal fluid (OODF) for 6h. Sperm kinematics, tyrosine phosphorylation, phosphorylation patterns, capacitation and acrosome reaction were analysed at hourly intervals. The amplitude of lateral head displacement (ALH) and straightness coefficient (STR) were higher (P<0.05) in bulls with higher fertility compared with those with lower fertility, at 1-4h of incubation. At 4h of incubation and onwards, spermatozoa from bulls with higher fertility showed a lower degree (P<0.05) of tyrosine phosphorylation and higher degree of capacitation and acrosome reaction. At least five tyrosine-phosphorylated sperm proteins were detected in all bulls. However, the expression of two phosphorylated sperm proteins (183 and 109 kDa) was upregulated in bulls with lower fertility. It may be concluded that cryopreserved spermatozoa from high- and low- fertile bulls differ in their ability to respond to OODF. This may help in developing tools for assessing fertility of bulls, once validated in more animals.
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Affiliation(s)
- A Kumaresan
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, SE-750 07 Uppsala, Sweden
| | - A Johannisson
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, SE-750 07 Uppsala, Sweden
| | - A-S Bergqvist
- Division of Reproduction, Department of Clinical Sciences, Faculty of Veterinary Medicine and Animal Science, Swedish University of Agricultural Sciences, PO Box 7054, SE-750 07 Uppsala, Sweden
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17
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Ros-Santaella JL, Pintus E. Rooibos (Aspalathus linearis) extract enhances boar sperm velocity up to 96 hours of semen storage. PLoS One 2017; 12:e0183682. [PMID: 28837611 PMCID: PMC5570286 DOI: 10.1371/journal.pone.0183682] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 08/09/2017] [Indexed: 02/04/2023] Open
Abstract
Rooibos (Aspalathus linearis) is a native shrub from South African fynbos and has become very popular in the last decades for its antioxidant and medicinal attributes. Several studies have shown its beneficial properties in numerous cell lines, but to date, the in vitro effects of rooibos extract on sperm cells are still unknown. In this study, boar semen was supplemented with four concentrations both of fermented and unfermented rooibos extracts during 96 h of liquid storage at 17°C. The effects of rooibos extracts on sperm velocity, membrane integrity, and acrosomal status were evaluated at 2 h, 48 h, and 96 h of semen storage. Overall our results indicate that rooibos extract enhances sperm velocity, protects the acrosome structure, and tends to preserve the membrane integrity during semen storage. Although the unfermented rooibos showed higher total polyphenol content and total antioxidant capacity than the fermented one, the latter had better effects on sperm velocity leading to, for instance, an increase of 30% in the rectilinear velocity (VSL) at 48 h compared to the control group. Taking into account the different storage times, we established a suitable range of extracts concentrations to be used in boar semen. The rooibos extract ought to be considered as a powerful and natural source of antioxidants for the preservation of boar semen.
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Affiliation(s)
- José Luis Ros-Santaella
- Department of Veterinary Sciences, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
- * E-mail: (JLRS); (EP)
| | - Eliana Pintus
- Department of Veterinary Sciences, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic
- * E-mail: (JLRS); (EP)
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Kumaresan A, Johannisson A, Al-Essawe EM, Morrell JM. Sperm viability, reactive oxygen species, and DNA fragmentation index combined can discriminate between above- and below-average fertility bulls. J Dairy Sci 2017; 100:5824-5836. [DOI: 10.3168/jds.2016-12484] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 03/12/2017] [Indexed: 01/09/2023]
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Sperm-bound antisperm antibodies prevent capacitation of bovine spermatozoa. Theriogenology 2017; 89:58-67. [DOI: 10.1016/j.theriogenology.2016.10.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Revised: 10/10/2016] [Accepted: 10/10/2016] [Indexed: 11/19/2022]
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20
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NITHARWAL K, SINGH P, BHAKAT M, CHAURASIA A, ABDULLAH M, PRABHA C. Effect of season on semen quality parameters in Murrah buffalo. THE INDIAN JOURNAL OF ANIMAL SCIENCES 2017. [DOI: 10.56093/ijans.v87i1.66866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Abstract
Seasonal influence on frozen semen quality in Murrah buffalo breeding bulls was determined. Frozen semen samples of 6 Murrah buffalo bulls were collected and semen frozen in 4 different seasons, viz. winter (Dec-Feb), spring (mid Feb-Apr), summer (May-Jun) and rainy (Jul-Aug) were assessed. Samples (12) of each bull, in a season, were evaluated for sperm motility, viability and acrosome integrity. Motility and other kinematics of spermatozoa during incubation (37°C) at 0, 30, 60, 90 and 120 min of thawing were assessed with computer assisted semen analyzer. Post-thaw sperm total motility and viability differed significantly among the seasons, the highest was in winter. Sperm plasma membrane integrity, acrosome integrity, progressive motility, rapid motility and other CASA evaluated parameters did not differ significantly among the seasons. Higher values of plasma membrane integrity (PMI), progressive motility, rapid motility, average path velocity (VAP), straight line velocity (VSL), curvilinear velocity (VCL), beat cross frequency (BCF), linearity (LIN) and straightness (STR) were obtained in winter season as compared to other seasons. Post-thaw motility at 0 min and 60 min of post-thaw incubation varied significantly between seasons and higher sperm motility was sustained for a longer period in semen cryopreserved in winter followed by rainy season, summer and spring. It can be concluded from this study that buffalo bull semen produced and frozen during winter season resulted in higher sperm motility, viability and postthaw longer survivability in comparison to other seasons.
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21
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Singh RK, Kumaresan A, Chhillar S, Rajak SK, Tripathi UK, Nayak S, Datta TK, Mohanty TK, Malhotra R. Identification of suitable combinations of in vitro sperm-function test for the prediction of fertility in buffalo bull. Theriogenology 2016; 86:2263-2271.e1. [PMID: 27555524 DOI: 10.1016/j.theriogenology.2016.07.022] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2016] [Revised: 07/14/2016] [Accepted: 07/19/2016] [Indexed: 01/13/2023]
Abstract
The present study assessed sperm functional characteristics in the frozen-thawed semen of buffalo bulls and estimated their relationship with field fertility. Frozen semen samples from three different freezing operations each from nine Murrah buffalo bulls were used for the assessment of different sperm functions related to fertilizing potential. Bulls were classified into high (n = 2), medium (n = 5), and low (n = 2) fertile based on adjusted field fertility. The sperm functions estimated included membrane integrity using carboxyfluorescein diacetate-propidium iodide, acrosome reaction status using fluorescein isothiocyanate peanut agglutinine, status of apoptosis using Annexin-V, protamine deficiency using Chromomycin A3, membrane stability using Merocyanine 540 and lipid peroxidation status using 4, 4-difluoro-4-bora-3a, 4a-diaza-s-indacene. The relationship between the proportion of live acrosome-intact spermatozoa and fertility was positive and significant (r = 0.59; P = 0.001). The proportion of moribund spermatozoa showed a significantly negative correlation with fertility (r = -0.50; P = 0.008). Similarly, the relationship of spermatozoa with unstable membrane (r = -0.51; P = 0.007), necrotic (r = - 0.42; P = 0.028), early necrotic (r = -0.42; P = 0.031), and apoptotic spermatozoa (r = -0.39; P = 0.046) with bull fertility was negative and significant. The correlation between the protamine-deficient spermatozoa and fertility was negative, but not significant. Among different combinations of tests, live acrosome-intact spermatozoa and lipid peroxidation status of spermatozoa revealed high positive correlation with buffalo bull fertility (adjusted R2 = 0.73, C[p] = 0.80). These preliminary findings may help in developing tools for assessing fertility of buffalo bulls, once validated in more animals.
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Affiliation(s)
- Raushan K Singh
- Theriogenology Lab, Animal Reproduction, Gynaecology & Obstetrics, National Dairy Research Institute, Karnal, Haryana, India
| | - A Kumaresan
- Theriogenology Lab, Animal Reproduction, Gynaecology & Obstetrics, National Dairy Research Institute, Karnal, Haryana, India.
| | - Shivani Chhillar
- Theriogenology Lab, Animal Reproduction, Gynaecology & Obstetrics, National Dairy Research Institute, Karnal, Haryana, India
| | - Shailendra K Rajak
- Theriogenology Lab, Animal Reproduction, Gynaecology & Obstetrics, National Dairy Research Institute, Karnal, Haryana, India
| | - Utkarsh K Tripathi
- Theriogenology Lab, Animal Reproduction, Gynaecology & Obstetrics, National Dairy Research Institute, Karnal, Haryana, India
| | - Samiksha Nayak
- Theriogenology Lab, Animal Reproduction, Gynaecology & Obstetrics, National Dairy Research Institute, Karnal, Haryana, India
| | - T K Datta
- Animal Biotechnology Centre, National Dairy Research Institute, Karnal, Haryana, India
| | - T K Mohanty
- Artificial Breeding Research Centre, National Dairy Research Institute, Karnal, Haryana, India
| | - R Malhotra
- Dairy Economics, Statistics & Management Division, National Dairy Research Institute, Karnal, Haryana, India
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22
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Use of immobilized cryopreserved bovine semen in a blind artificial insemination trial. Theriogenology 2015; 84:413-20. [DOI: 10.1016/j.theriogenology.2015.03.028] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 03/24/2015] [Accepted: 03/26/2015] [Indexed: 11/20/2022]
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23
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Vizel R, Hillman P, Ickowicz D, Breitbart H. AKAP3 degradation in sperm capacitation is regulated by its tyrosine phosphorylation. Biochim Biophys Acta Gen Subj 2015; 1850:1912-20. [PMID: 26093290 DOI: 10.1016/j.bbagen.2015.06.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Revised: 05/27/2015] [Accepted: 06/16/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND The A-kinase anchoring protein (AKAP) family is essential for sperm motility, capacitation and the acrosome reaction. PKA-dependent protein tyrosine phosphorylation occurs in mammalian sperm capacitation including AKAP3. In a recent study, we showed that AKAP3 undergoes degradation under capacitation conditions. Thus, we tested here whether AKAP3 degradation might be regulated by its tyrosine phosphorylation. METHODS The intracellular levels of AKAP3 were determined by western blot (WB) analysis using specific anti-AKAP3 antibodies. Tyrosine phosphorylation of AKAP3 was tested by immunoprecipitation and WB analysis. Acrosome reaction was examined using FITC-pisum sativum agglutinin. RESULTS AKAP3 is degraded and undergoes tyrosine-dephosphorylation during sperm capacitation and the degradation was reduced by inhibition of tyrosine phosphatase and enhanced by inhibition of tyrosine kinase. Sperm starvation or inhibition of mitochondrial respiration, which reduce cellular ATP levels, significantly accelerated AKAP3 degradation. Treatment with vanadate, or Na(+) or bicarbonate depletion, reduced AKAP3-degradation and the AR rate, while antimycin A or NH4Cl elevated both AKAP3-degradation and the AR degree. Treatment of sperm with NH4Cl enhanced PKA-dependent phosphorylation of four proteins, further supporting the involvement of AKAP3-degradation in capacitation. To demonstrate more specifically that sperm capacitation requires AKAP3-degradation, we inhibited AKAP3-degradation using anti-AKAP3 antibody in permeabilized cells. The anti-AKAP3-antibody induced significant inhibition of AKAP3-degradation and of the AR rate. CONCLUSION Sperm capacitation process requires AKAP3-degradation, and the degradation degree is regulated by the level of AKAP3 tyrosine phosphorylation. GENERAL SIGNIFICANCE Better understanding of the molecular mechanisms that mediate sperm capacitation can be used for infertility diagnosis, treatment and the developing of male contraceptives.
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Affiliation(s)
- Ruth Vizel
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Pnina Hillman
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Debby Ickowicz
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel
| | - Haim Breitbart
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan 5290002, Israel.
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24
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Valeanu S, Johannisson A, Lundeheim N, Morrell J. Seasonal variation in sperm quality parameters in Swedish red dairy bulls used for artificial insemination. Livest Sci 2015. [DOI: 10.1016/j.livsci.2014.12.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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In vitro induction of the acrosome reaction in spermatozoa from endangered Spanish bulls: Effect of breed, culture media and incubation time. Livest Sci 2012. [DOI: 10.1016/j.livsci.2012.07.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Minervini F, Guastamacchia R, Pizzi F, Dell’Aquila ME, Barile VL. Assessment of Different Functional Parameters of Frozen-Thawed Buffalo Spermatozoa by Using Cytofluorimetric Determinations. Reprod Domest Anim 2012; 48:317-24. [DOI: 10.1111/j.1439-0531.2012.02152.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Impact of genomic selection of AI dairy sires on their likely utilization and methods to estimate fertility: A paradigm shift. Theriogenology 2012; 77:795-817. [DOI: 10.1016/j.theriogenology.2011.09.002] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Revised: 08/25/2011] [Accepted: 09/03/2011] [Indexed: 11/21/2022]
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28
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Christensen P, Labouriau R, Birck A, Boe-Hansen GB, Pedersen J, Borchersen S. Relationship among seminal quality measures and field fertility of young dairy bulls using low-dose inseminations. J Dairy Sci 2011; 94:1744-54. [PMID: 21426963 DOI: 10.3168/jds.2010-3087] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2010] [Accepted: 11/01/2010] [Indexed: 11/19/2022]
Abstract
Optimal use of genetically superior bulls through artificial insemination (AI) is highly dependent on precise assessment of seminal quality which allows for reasonable estimations of field fertility with normal or low-dose inseminations. In the present study, seminal measures such as sperm motility and morphology, sperm viability, sperm DNA fragmentation, and the ability of the sperm to display an acrosome reaction were tested. The relationships between field fertility and the seminal measures were investigated using 3 ejaculates from each of 195 bulls (156 Holstein and 39 Jersey) participating in a progeny test program. A range of AI doses, varying from 2×10(6) to 15×10(6) sperm/straw, was obtained by a controlled dilution process applied to each ejaculate. The different AI doses were distributed at random among 75,610 experimental first inseminations in 4,721 herds and 208 AI technicians. Most of the seminal measures appeared to contain a predictive value for the nonreturn to estrus at 56 d post-AI (NRR56) regardless of the number of sperm per AI dose and can be regarded as noncompensable sperm traits. But, due to correlations between the individual measures, the best model for describing (and predicting) NRR56 was based on sperm concentration and viability in the neat (raw) semen, and post-thaw sperm viability. The statistical models for describing NRR56 included the following explanatory variables: strength of the estrus, number of sperm per AI dose, breed, parity, and random components representing herds and AI technicians. The present results show that the most precise estimation of a bull's NRR56 can be achieved through flow cytometric detection of sperm concentration and viability in neat semen as well as flow cytometric detection of post-thaw sperm viability.
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Affiliation(s)
- P Christensen
- Copenhagen University, Faculty of Life Sciences, Department of Large Animal Sciences, Veterinary Reproduction and Obstetrics, DK-1870 Frederiksberg, Denmark.
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29
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Petrunkina AM, Harrison RAP. Cytometric solutions in veterinary andrology: Developments, advantages, and limitations. Cytometry A 2011; 79:338-48. [DOI: 10.1002/cyto.a.21044] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2010] [Revised: 02/07/2011] [Accepted: 02/13/2011] [Indexed: 01/02/2023]
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