1
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Prieto OB, Algieri C, Spinaci M, Trombetti F, Nesci S, Bucci D. Cell bioenergetics and ATP production of boar spermatozoa. Theriogenology 2023; 210:162-168. [PMID: 37517301 DOI: 10.1016/j.theriogenology.2023.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 06/14/2023] [Accepted: 07/17/2023] [Indexed: 08/01/2023]
Abstract
Cellular metabolism is an important feature of spermatozoa that deserves more insights to be fully understood, in particular in porcine semen physiology. The present study aims to characterize the balance between glycolytic and oxidative metabolism in boar sperm cells. Agilent Seahorse technology was used to assess both oxygen consumption rate (OCR), as an oxidative metabolism index, and extracellular acidification rate (ECAR), as a glycolytic index. Different metabolic parameters were studied on freshly ejaculated sperm cells (identified as day zero sample, d0) and after one day of storage at 17 °C in Androhep extender (d1). Mitochondrial ATP production rate (MitoATP) was higher than the glycolytic ATP production rate (glycoATP) at both d0 and d1 while at d1 the amount of ATP production decreased, in particular, due to OXPHOS reduction. Conversely, glycoATP was not significantly different between d0 and d1. Interestingly, OCR profile showed no different bioenergetic parameters (i.e. ATP turnover, basal or maximal respiration, and spare respiration) between d0 and d1, thus indicating that sperm cell metabolism was reversibly decreased by preservation conditions. Other metabolic parameters showed the same trend, irrespective of the storage time: under stressed conditions (oligomycin plus FCCP), spermatozoa showed an increase in mitochondrial respiration while the metabolic potential of glycolysis did not undergo variations when compared to baseline metabolism. The rate of oxidation of fuel substrates - glucose, fatty acids, and glutamine - showed that sperm reliance on glucose oxidation to maintain baseline respiration was higher than fatty acids or glutamine. Interestingly spermatozoa demonstrated to have a low "capacity" parameter, which indicates that they cannot use only a single fuel substrate to produce energy. This feature of sperm metabolism to be unable to increase oxidation of a particular fuel to compensate for inhibition of alternative fuel pathway(s) was demonstrated by the negative value of "flexibility". Our results showed that ATP production in boar sperm cells relied on mitochondrial oxidative metabolism in freshly ejaculated cells, while, under liquid storage conditions, their oxidative metabolism decreased while the glycolysis remained constant. These results open new fields of research in the preservation techniques of boar sperm cells.
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Affiliation(s)
- Olga Blanco Prieto
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell'Emilia, Bologna, Italy
| | - Cristina Algieri
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell'Emilia, Bologna, Italy
| | - Marcella Spinaci
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell'Emilia, Bologna, Italy
| | - Fabiana Trombetti
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell'Emilia, Bologna, Italy
| | - Salvatore Nesci
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell'Emilia, Bologna, Italy.
| | - Diego Bucci
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064, Ozzano dell'Emilia, Bologna, Italy
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2
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Cañón-Beltrán K, Cajas YN, González E, Fernández-González R, Fierro N, Lorenzo PL, Arias-Álvarez M, García-García RM, Gutiérrez-Adán A, Rizos D. Acquisition of fertilization competence in guinea pig spermatozoa under different capacitation protocols. Theriogenology 2023; 198:231-240. [PMID: 36621132 DOI: 10.1016/j.theriogenology.2022.12.042] [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: 08/23/2022] [Revised: 12/12/2022] [Accepted: 12/27/2022] [Indexed: 12/30/2022]
Abstract
Guinea pig in vitro fertilization (IVF) are poorly developed due to the limited accessibility to oocytes and the lack of an efficient method of sperm capacitation. Thus, we aimed to evaluate different capacitation protocols that we validated through sperm analysis and using heterologous (He) IVF with zona-intact bovine oocytes. Spermatozoa of guinea pigs were collected and processed separately by 4 different protocols: A) Spermatozoa were obtained by flushing the lumen of one cauda epididymis and incubated in a minimal culture medium (MCM); B) One epididymis was placed in a prewarmed of M2 medium and gently minced with fine scissors. Spermatozoa were incubated in a modified human tubal fluid medium (HTF). In both protocols, the spermatozoa were capacitated at 37 °C under an atmosphere of 5% CO2 for 2 h. In the protocols C and D, the spermatozoa were collected by flushing the lumen of the cauda epididymis and selected by commercial density gradient Bovipure® (Nidacon Laboratories AB, Göthenborg, Sweden), according to the manufacturer's instructions. Then for Protocol C) spermatozoa were incubated in MCM medium supplemented with 10 mg/mL heparin (MCM-Hep); while for Protocol D) spermatozoa were incubated in FERT medium supplemented 10 mg/mL heparin (FERT-Hep). Incubation of C and D protocols were performed at 38.5 °C under an atmosphere of 5% CO2 for 2 h. Capacitation protocols C and D showed a higher percentage of viability, total and hyperactive-like motility, and acrosome reaction compared to protocols A and B. For this reason, protocols C and D were used for further He-IVF analysis. Guinea pig sperm and matured zona-intact bovine oocytes were co-incubated at 5% CO2 and 38.5 °C. Sperm-oocyte interaction was assessed at 2.5 h post-insemination (hpi) and pronuclear formation (PrF) were evaluated at 18, 20, 22, 24 and 26 hpi, while the cleavage rate was evaluated at 48 hpi. In protocol D, PrF was significantly higher than in protocol C (P ≤ 0.05) at every time point evaluated. Also, the cleavage rate at 48 hpi was higher (P ≤ 0.05) in He-IVF protocol D (69.8 ± 1.7%) compared to He-IVF protocol C (49.1 ± 1.1%). In conclusion, we determined the most adequate sperm capacitation conditions for guinea pig that allow zona-intact bovine oocyte penetration and lead to hybrid embryo formation, suggesting that these conditions could be optimal to develop IVF in guinea pigs.
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Affiliation(s)
- Karina Cañón-Beltrán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Madrid, Spain; Programa de Medicina Veterinaria y Zootecnia, Grupo Kyron, Corporación Universitaria del Huila (CORHUILA), Huila, Colombia.
| | - Yulia N Cajas
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Madrid, Spain; Laboratorio de Biotecnología de la Reproducción Animal, Facultad de Ciencias Agropecuarias, Universidad de Cuenca, Cuenca, Ecuador
| | - Encina González
- Department of Anatomy and Embryology, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Raúl Fernández-González
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Madrid, Spain
| | - Natacha Fierro
- Escuela de Ingeniería Agropecuaria, Departamento de Ciencias Biológicas, Universidad Técnica Particular de Loja, Loja, Ecuador
| | - Pedro L Lorenzo
- Department of Physiology, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - María Arias-Álvarez
- Department of Animal Production, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Rosa M García-García
- Department of Physiology, Veterinary Faculty, Complutense University of Madrid, Madrid, Spain
| | - Alfonso Gutiérrez-Adán
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Madrid, Spain
| | - Dimitrios Rizos
- Department of Animal Reproduction, National Institute for Agriculture and Food Research and Technology (INIA-CSIC), Madrid, Spain
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3
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Bucci D, Spinaci M, Bustamante-Filho IC, Nesci S. The sperm mitochondria: clues and challenges. Anim Reprod 2023; 19:e20220131. [PMID: 36819482 PMCID: PMC9924773 DOI: 10.1590/1984-3143-ar2022-0131] [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: 12/20/2022] [Accepted: 01/24/2023] [Indexed: 02/19/2023] Open
Abstract
Sperm cells rely on different substrates to fulfil thei energy demand for different functions and diverse moments of their life. Species specific mechanism involve both energy substrate transport and their utilization: hexose transporters, a protein family of facilitative passive transporters of glucose and other hexose, have been identified in spermatozoa of different species and, within the species, their localization has been identified and, in some cases, linked to specific glycilitic enzyme presence. The catabolism of hexose sources for energy purposes has been studied in various species, and recent advances has been made in the knowledge of metabolic strategies of sperm cells. In particular, the importance of aerobic metabolism has been defined and described in horse, boar and even mouse spermatozoa; bull sperm cells demonstrate to have a good adaptability and capacity to switch between glycolysis and oxidative phosphorylation; finally, dog sperm cells have been demonstrated to have a great plasticity in energy metabolism management, being also able to activate the anabolic pathway of glycogen syntesis. In conclusion, the study of energy management and mitochondrial function in spermatozoa of different specie furnishes important base knowledge to define new media for preservation as well as newbases for reproductive biotechnologies.
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Affiliation(s)
- Diego Bucci
- Department of Veterinay Medical Sciences, University of Bologna, Bologna, Italy,Corresponding author:
| | - Marcella Spinaci
- Department of Veterinay Medical Sciences, University of Bologna, Bologna, Italy
| | | | - Salvatore Nesci
- Department of Veterinay Medical Sciences, University of Bologna, Bologna, Italy
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4
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Amaral A. Energy metabolism in mammalian sperm motility. WIREs Mech Dis 2022; 14:e1569. [DOI: 10.1002/wsbm.1569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/18/2022] [Accepted: 05/21/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Alexandra Amaral
- Department of Developmental Genetics Max Planck Institute for Molecular Genetics Berlin Germany
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5
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Chen J, Wan L, Zheng Q, Lan M, Zhang X, Li Y, Li B, Li L. Structural characterization and in vitro hypoglycaemic activity of glucomannan from Anemarrhena asphodeloides Bunge. Food Funct 2022; 13:1797-1807. [PMID: 35083996 DOI: 10.1039/d1fo03010h] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A new polysaccharide (AABP-2B) was obtained from Anemarrhena asphodeloides Bunge after purification by gradient alcohol precipitation and DEAE-52 cellulose column chromatography. AABP-2B was confirmed to be a homogeneous polysaccharide with a molecular weight of 5800 Da and was composed of mannose and glucose at a molar ratio of 7.2 : 2.8. Structural analysis demonstrated that the backbone of AABP-2B was mainly composed of 4)-β-D-Manp-(1, 4,6)-β-D-Glcp-(1 and 3,6)-β-D-Manp-(1. The hypoglycaemic effect of AABP-2B was evaluated by its inhibition of α-glucosidase activities and insulin resistance in a HepG2 cell model. The results showed that AABP-2B displayed α-glucosidase inhibitory activities and could significantly improve glucose consumption by activating the IRS-1/PI3K/Akt signalling pathway in insulin-resistant HepG2 cells. Hence, AABP-2B may have potential as a functional food or medicine for diabetes therapy.
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Affiliation(s)
- Juncheng Chen
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China. .,International School of Public Health and One Health, Hainan Medical University, Haikou, Hainan 571199, China.
| | - Liting Wan
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China.
| | - Qingsong Zheng
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China.
| | - Meijuan Lan
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China.
| | - Xia Zhang
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China.
| | - Yuting Li
- School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, 523808, China
| | - Bing Li
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China.
| | - Lin Li
- School of Food Science and Engineering, Guangdong Province Key Laboratory for Green Processing of Natural Products and Product Safety, Engineering Research Center of Starch and Plant Protein Deep Processing, Ministry of Education, South China University of Technology, Guangzhou, 510640, China. .,School of Chemical Engineering and Energy Technology, Dongguan University of Technology, Dongguan, 523808, China
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6
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Alkattan A, Alkhalifah A, Alsalameen E, Alghanim F, Radwan N. Polymorphisms of genes related to phase II metabolism and resistance to clopidogrel. Pharmacogenomics 2021; 23:61-79. [PMID: 34866404 DOI: 10.2217/pgs-2021-0092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Clopidogrel is an antiplatelet drug commonly used to prevent coagulation. This review aimed to investigate the effect of polymorphisms of G6PD, GCLC, GCLM, GSS, GST, GSR, HK and GLRX genes on clopidogrel during phase II metabolism through exploring previous studies. The results revealed that low glutathione plasma levels caused by several alleles related to these genes could affect the bioactivation process of the clopidogrel prodrug, making it unable to inhibit platelet aggregation perfectly and thus leading to severe consequences in patients with a high risk of blood coagulation. However, the study recommends platelet reactivity tests to predict clopidogrel efficacy rather than studying gene mutations, as most of these mutations are rare and other nongenetic factors could affect the drug's efficacy.
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Affiliation(s)
- Abdullah Alkattan
- Planning and Research Department, General Directorate of School Health, Ministry of Health, Riyadh 11176, Saudi Arabia
| | - Ahmed Alkhalifah
- Department of Sales, Fresenius Kabi, Alhaya Medical Company, Riyadh, Saudi Arabia
| | - Eman Alsalameen
- Department of Pharmacy, King Khalid University Hospital, Medical City King Saud University, Riyadh, Saudi Arabia
| | - Fatimah Alghanim
- Department of General Medicine, Faculty of Medicine, Imam Abdulrahman bin Faisal University
| | - Nashwa Radwan
- Department of Public Health & Community Medicine, Faculty of Medicine, Tanta University, Tanta, Egypt.,Department of Research, Assisting Deputyship for Primary Health Care, Ministry of Heath, Riyadh, Saudi Arabia
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7
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Yao R, Lu T, Liu J, Li W, Weng X, Yue X, Li F. Variants of ADPGK gene and its effect on the male reproductive organ parameters and sperm count in Hu sheep. Anim Biotechnol 2021:1-8. [PMID: 34730075 DOI: 10.1080/10495398.2021.1995400] [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] [Indexed: 10/19/2022]
Abstract
ADP-dependent glucokinase (ADPGK) plays an important role instead of hexokinase in regulating energy metabolism via the Embden-Meyerhof-Parnas Pathway. And energy provided via glycolysis promotes testis development and spermatogenesis. In this study, 466 Hu sheep were screened for mutations in the ADPGK gene to examine the association of the ADPGK gene polymorphisms with the testis traits and spermatogenesis. The NC_056060.1: g.31295 C > T SNP was found in the 3'-UTR region, resulting in two genotypes CC and TC type with genotypic frequencies of 0.66 and 0.34, respectively. This mutation was significantly associated with testis weight, testis long circumference, testis short girth, epididymis weight, and sperm concentration (p < 0.05). Moreover, TC genotype individuals had an increased tendency in the expression of the ADPGK gene and had significant reproductive performance advantages compared with CC genotype individuals in the study. And compared with the small testes (<50 g), the ADPGK gene expression of big testes (>160 g) increased significantly. This indicates an association between the ADPGK gene and reproductive organ parameters and sperm count in selected Hu sheep breed, and this SNP may serve as an effective DNA molecular marker for marker-assisted selection in Hu sheep breeding programs.
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Affiliation(s)
- Rongyu Yao
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Tingting Lu
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Jiamei Liu
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Wanhong Li
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xiuiu Weng
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xiangpeng Yue
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Fadi Li
- Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Engineering Research Center of Grassland Industry, Ministry of Education, State Key Laboratory of Grassland Agro-ecosystems, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China.,Gansu Runmu Biological Engineering Co., Ltd., Yongchang, China.,Biotechnology Engineering Laboratory of Gansu Meat Sheep Breeding, Minqin, China
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8
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Hernández-Avilés C, Ramírez-Agámez L, Love CC, Friedrich M, Pearson M, Kelley DE, Beckham AMN, Teague SR, LaCaze KA, Brinsko SP, Varner DD. The effects of metabolic substrates glucose, pyruvate, and lactate added to a skim milk-based semen extender for cooled storage of stallion sperm. Theriogenology 2020; 161:83-97. [PMID: 33302166 DOI: 10.1016/j.theriogenology.2020.11.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2020] [Revised: 11/25/2020] [Accepted: 11/25/2020] [Indexed: 12/31/2022]
Abstract
Under in vitro conditions, stallion sperm might preferentially use energy substrates that primarily undergo mitochondrial metabolism. The present study sought to determine the effects of glucose, pyruvate, lactate, or their combinations on the quality of stallion sperm subjected to cooled storage at different temperatures, when using a skim milk-based semen extender. In Experiment 1, no substrate (Control), glucose (40 mM; Glu-40), pyruvate (2 mM, 19.8 mM; Pyr-2, Pyr-19), lactate (2 mM, 19.8 mM; Lac-2, Lac-19, respectively), or their combinations (G/P/L-2 or G/P/L-19, respectively) were added to a milk-based extender and their effects were determined on motion characteristics, viability/acrosomal intactness (VAI), lipid peroxidation status (VLPP), and DNA integrity (COMPα-t) of sperm incubated for 1 h at 37 °C, or sperm stored for 24 h at either 10 or 20 °C. At any period and temperature tested, Glu-40, G/P/L-2, and G/P-L-19 resulted in similar motion characteristics (P > 0.05) but were higher than that of other treatment groups (P < 0.05). Mean VAI was highest in Glu-40 (P < 0.05). Mean VLPP was highest in G/P/L-2 and G/P/L-19 groups (P < 0.05), and mean COMPα-t was lowest in Control, Glu-40, G/P/L-2 and G/P/L-19 groups (P < 0.05). All measures of sperm quality were higher in semen stored at 10 °C than 20 °C (P < 0.05). In Experiment 2, increasing concentrations of either pyruvate or lactate (Pyr-40, Lac-40 or Pyr-80, Lac-80) were added to the extender as energy substrates and compared to glucose (40 mM), following storage for 72 h at either 10 or 20 °C. Groups Glu-40 and Pyr-40 yielded similar sperm motion characteristics and VAI, while VLPP and COMPα-t were reduced in these treatment groups, as compared to Pyr-80, Lac-40, and Lac-80 (P < 0.05). All measures of sperm quality were higher in semen stored at 10 °C vs 20 °C (P < 0.05). This study demonstrates that at storage temperatures of 10 or 20 °C, stallion sperm quality is optimized by the presence of glucose in a skim milk-based semen extender. The addition of substrates that readily support oxidative phosphorylation (i.e., pyruvate or lactate) did not improve the quality of stallion sperm over that of glucose alone and resulted in deleterious effects on sperm quality over time. These effects appeared to be associated with oxidative stress. Use of pyruvate (40 mM) as an alternative energy substrate to glucose generally yielded similar results to that of glucose when sperm were stored at 10 °C only.
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Affiliation(s)
- Camilo Hernández-Avilés
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA.
| | - Luisa Ramírez-Agámez
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Charles C Love
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Macy Friedrich
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Mariah Pearson
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Dale E Kelley
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Anne M N Beckham
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Sheila R Teague
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Katrina A LaCaze
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Steven P Brinsko
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Dickson D Varner
- Department of Large Animal Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
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9
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Yi YJ, Kamala-Kannan S, Lim JM, Oh BT, Lee SM. Effects of difructose dianhydride (DFA)-IV on in vitro fertilization in pigs. J Biomed Res 2017; 31:453-461. [PMID: 28958997 PMCID: PMC5706438 DOI: 10.7555/jbr.31.20160115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Difructose dianhydride IV (DFA-IV) is produced from levan, which is a natural polysaccharide that belongs to the fructan family, through the activity of levan fructotransferase (LF) derived from microorganisms. Recently, DFA-IV has been expected to have diverse applications in the food and medical industry. Here, we examined the potential application of DFA-IV forin vitro fertilization (IVF) in pigs. In the assessment of acrosomal integrity during incubation, intact acrosomal or viable spermatozoa were highly sustained in 0.1% or 0.25% DFA-IV (69.8%-70.8%,P<0.05). Reactive oxygen species (ROS) levels during sperm incubation decreased following the addition of DFA-IV, and 0.1%-0.5% DFA-IV in particular significantly decreased ROS production relative to that seen with no addition or 0.75% DFA-IV. Total fertilization (mono+ polyspermic oocyte) rate was significantly higher in the addition of 0.1% DFA-IV (94.2%) than with other concentrations (71.8%-86.7%,P<0.05). When using reduced IVF times and lower sperm numbers, we found that addition of 0.1%–0.5% DFA-IV significantly increased the fertilization rate (P<0.05). Fertilized oocytes treated with 0.1% DFA-IV exhibited higher embryonic development and blastocyst formation than those treated with other concentrations (P<0.05). Consequently, the addition of DFA-IV during IVF improved fertilization and embryonic development, suggesting the possible use of novel sugars for enhancement of assisted reproductive technology (ART) in mammals.
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Affiliation(s)
- Young-Joo Yi
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 54596, Korea.,Safety, Environment and Life Science Institute, Chonbuk National University, Iksan 54596, Korea
| | - S Kamala-Kannan
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 54596, Korea
| | - Jeong-Muk Lim
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 54596, Korea
| | - Byung-Taek Oh
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 54596, Korea
| | - Sang-Myeong Lee
- Division of Biotechnology, College of Environmental and Bioresource Sciences, Chonbuk National University, Iksan 54596, Korea.,Safety, Environment and Life Science Institute, Chonbuk National University, Iksan 54596, Korea
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10
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Delbridge LMD, Benson VL, Ritchie RH, Mellor KM. Diabetic Cardiomyopathy: The Case for a Role of Fructose in Disease Etiology. Diabetes 2016; 65:3521-3528. [PMID: 27879401 DOI: 10.2337/db16-0682] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Accepted: 09/09/2016] [Indexed: 11/13/2022]
Abstract
A link between excess dietary sugar and cardiac disease is clearly evident and has been largely attributed to systemic metabolic dysregulation. Now a new paradigm is emerging, and a compelling case can be made that fructose-associated heart injury may be attributed to the direct actions of fructose on cardiomyocytes. Plasma and cardiac fructose levels are elevated in patients with diabetes, and evidence suggests that some unique properties of fructose (vs. glucose) have specific cardiomyocyte consequences. Investigations to date have demonstrated that cardiomyocytes have the capacity to transport and utilize fructose and express all of the necessary proteins for fructose metabolism. When dietary fructose intake is elevated and myocardial glucose uptake compromised by insulin resistance, increased cardiomyocyte fructose flux represents a hazard involving unregulated glycolysis and oxidative stress. The high reactivity of fructose supports the contention that fructose accelerates subcellular hexose sugar-related protein modifications, such as O-GlcNAcylation and advanced glycation end product formation. Exciting recent discoveries link heart failure to induction of the specific high-affinity fructose-metabolizing enzyme, fructokinase, in an experimental setting. In this Perspective, we review key recent findings to synthesize a novel view of fructose as a cardiopathogenic agent in diabetes and to identify important knowledge gaps for urgent research focus.
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Affiliation(s)
- Lea M D Delbridge
- Department of Physiology, University of Melbourne, Victoria, Australia
| | - Vicky L Benson
- Department of Physiology, University of Auckland, Auckland, New Zealand
| | - Rebecca H Ritchie
- Heart Failure Pharmacology, Baker IDI Heart and Diabetes Institute, Victoria, Australia
| | - Kimberley M Mellor
- Department of Physiology, University of Melbourne, Victoria, Australia
- Department of Physiology, University of Auckland, Auckland, New Zealand
- Auckland Bioengineering Institute, University of Auckland, Auckland, New Zealand
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11
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Rodríguez-Gil JE, Bonet S. Current knowledge on boar sperm metabolism: Comparison with other mammalian species. Theriogenology 2016; 85:4-11. [DOI: 10.1016/j.theriogenology.2015.05.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 05/06/2015] [Accepted: 05/06/2015] [Indexed: 11/28/2022]
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12
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Córdova A, Strobel P, Vallejo A, Valenzuela P, Ulloa O, Burgos RA, Menarim B, Rodríguez-Gil JE, Ratto M, Ramírez-Reveco A. Use of hypometabolic TRIS extenders and high cooling rate refrigeration for cryopreservation of stallion sperm: presence and sensitivity of 5' AMP-activated protein kinase (AMPK). Cryobiology 2014; 69:473-81. [PMID: 25445464 DOI: 10.1016/j.cryobiol.2014.10.008] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Revised: 10/15/2014] [Accepted: 10/15/2014] [Indexed: 12/18/2022]
Abstract
This study evaluated the effect of the use of hypometabolic TRIS extenders in the presence or the absence of AMPK activators as well as the utilization of high cooling rates in the refrigeration step on the freezability of stallion sperm. Twelve ejaculates were cryopreserved using Botucrio® as a control extender and a basic TRIS extender (HM-0) separately supplemented with 10 mM metformin, 2mM 5-aminoimidazole-4-carboxamide-1-β-D-ribofuranoside (AICAR), 2 mM Adenosine monophosphate (AMP), 40 μM compound C AMPK inhibitor or 2 mM AMP+40 μM compound C. Our results showed that the utilization of a hypometabolic TRIS extender supplemented or not with AMP or metformin significantly improves stallion sperm freezability when compared with a commercial extender. Additionally, high cooling rates do not affect stallion sperm quality after cooling and post-thawing. Finally, stallion spermatozoa present several putative AMPK sperm isoforms that do not seem to respond to classical activators, but do respond to the Compound C inhibitor.
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Affiliation(s)
- Alex Córdova
- Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Pablo Strobel
- Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Andrés Vallejo
- Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Pamela Valenzuela
- Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Omar Ulloa
- Haras Militar Pupunahue, DGFER-Ejército de Chile, Chile
| | - Rafael A Burgos
- Instituto de Farmacología y Morfofisiología, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | - Bruno Menarim
- Instituto de Ciencias Clínicas, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile
| | | | - Marcelo Ratto
- Ross University School of Veterinary Medicine, Basseterre, West Indies
| | - Alfredo Ramírez-Reveco
- Instituto de Ciencia Animal, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Chile.
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13
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Katoh Y, Takebayashi K, Kikuchi A, Iki A, Kikuchi K, Tamba M, Kawashima A, Matsuda M, Okamura N. Porcine sperm capacitation involves tyrosine phosphorylation and activation of aldose reductase. Reproduction 2014; 148:389-401. [PMID: 25049426 DOI: 10.1530/rep-14-0199] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Mammalian sperm must be activated in the tubal isthmus through capacitation to induce the acrosome reaction and subsequent fertilization. Although the molecular mechanisms involved in capacitation have yet to be fully elucidated, increased concentrations of reactive oxygen species (ROS) and the extent of tyrosine phosphorylation of proteins have been suggested to play central roles in the completion of capacitation. In this study, aldose reductase was for the first time identified as one of the tyrosine-phosphorylated proteins involved in the capacitation of porcine cauda epididymal sperm. Both tyrosine phosphorylation and activity of aldose reductase associated with the particulate fraction of sperm cells were significantly enhanced during capacitation. Alrestatin, a membrane-permeable and specific inhibitor of aldose reductase, plays a role in the inhibition of aldose reductase activity, elevation of intracellular levels of ROS, and induction of hyperactivated motility, all at similar dose dependencies. Alrestatin canceled both the increase in the tyrosine phosphorylation of aldose reductase and the decrease in the glutathione levels in sperm-induced during capacitation. The hyperactivated motility was induced to a higher extent in the presence of glucose than in the presence of fructose. These results indicate that aldose reductase plays an important role in induction of hyperactivation and capacitation of sperm through the elevation of ROS in sperm cells. Furthermore, aldose reductase was shown to be added to sperm during transit through the epididymis, suggesting that aldose reductase is one of the key proteins that support the functional maturation of sperm.
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Affiliation(s)
- Yuki Katoh
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Kohsuke Takebayashi
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Akihiko Kikuchi
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Ayumi Iki
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Kazuhiro Kikuchi
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Michiko Tamba
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Akihiro Kawashima
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Manabu Matsuda
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
| | - Naomichi Okamura
- Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan Graduate School of Comprehensive Human SciencesUniversity of Tsukuba, Tennodai 1-1-1, Tsukuba, Ibaraki 305-8575, JapanCenter for Humanities and SciencesIbaraki Prefectural University of Health Sciences, Ami 4669-2, Ami, Ibaraki 300-0394, JapanDivision of Animal SciencesNational Institute of Agrobiological Sciences, Tsukuba, Ibaraki 305-8602, JapanGraduate School of ScienceUniversity of Tokyo, Tokyo 113-0033, Japan
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14
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Bioenergetics of mammalian sperm capacitation. BIOMED RESEARCH INTERNATIONAL 2014; 2014:902953. [PMID: 24791005 PMCID: PMC3984864 DOI: 10.1155/2014/902953] [Citation(s) in RCA: 106] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/01/2014] [Revised: 03/02/2014] [Accepted: 03/03/2014] [Indexed: 11/17/2022]
Abstract
After ejaculation, the mammalian male gamete must undergo the capacitation process, which is a prerequisite for egg fertilization. The bioenergetics of sperm capacitation is poorly understood despite its fundamental role in sustaining the biochemical and molecular events occurring during gamete activation. Glycolysis and mitochondrial oxidative phosphorylation (OXPHOS) are the two major metabolic pathways producing ATP which is the primary source of energy for spermatozoa. Since recent data suggest that spermatozoa have the ability to use different metabolic substrates, the main aim of this work is to present a broad overview of the current knowledge on the energy-producing metabolic pathways operating inside sperm mitochondria during capacitation in different mammalian species. Metabolism of glucose and of other energetic substrates, such as pyruvate, lactate, and citrate, is critically analyzed. Such knowledge, besides its obvious importance for basic science, could eventually translate into the development of novel strategies for treatment of male infertility, artificial reproduction, and sperm selection methods.
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15
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Roy VK, Krishna A. The expression pattern of the glucose transporter GLUT-5 in the testis during the spermatogenic cycle of the vespertilionid bat Scotophilus heathi. Gen Comp Endocrinol 2013; 191:59-64. [PMID: 23751812 DOI: 10.1016/j.ygcen.2013.05.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Revised: 05/20/2013] [Accepted: 05/29/2013] [Indexed: 12/19/2022]
Abstract
The aims of this study were to investigate the localization and rate of expression of GLUT-5 protein during the spermatogenic cycle of Scotophilus heathi and to determine whether the expression of testicular GLUT-5 was under androgenic control. This study showed localization of GLUT-5 mainly in the spermatogonia, spermatids, spermatozoa and Leydig cells of the testis in S. heathi. Western blot analysis showed marked variation in the rate of expression of GLUT-5 protein in the testis during the reproductive cycle, in which peak expression of GLUT-5 in the testis coincided with the period of peak spermatogenesis and mating. Treatment with flutamide (an anti-androgen) caused a dose-dependent decrease in the expression of GLUT-5 protein in the testis that suggested that the expression of GLUT-5 was under androgenic control. We propose that GLUT-5 plays an important role in the transport into spermatozoa of the fuel that is required for prolonged storage in the female genital tract in S. heathi.
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Affiliation(s)
- Vikas Kumar Roy
- Department of Zoology, Mizoram University, Aizawl 796 004, India
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16
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CHANAPIWAT P, KAEOKET K, TUMMARUK P. Cryopreservation of Boar Semen by Egg Yolk-Based Extenders Containing Lactose or Fructose is Better Than Sorbitol. J Vet Med Sci 2012; 74:351-4. [DOI: 10.1292/jvms.11-0273] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Panida CHANAPIWAT
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University
| | - Kampon KAEOKET
- Semen Laboratory, Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University
| | - Padet TUMMARUK
- Department of Obstetrics, Gynaecology and Reproduction, Faculty of Veterinary Science, Chulalongkorn University
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17
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Ramió-Lluch L, Fernández-Novell JM, Peña A, Ramírez A, Concha II, Rodríguez-Gil JE. ‘In Vitro’ Capacitation and Further ‘In Vitro’ Progesterone-Induced Acrosome Exocytosis are Linked to Specific Changes in the Expression and Acrosome Location of Protein Phosphorylation in Serine Residues of Boar Spermatozoa. Reprod Domest Anim 2011; 47:766-76. [DOI: 10.1111/j.1439-0531.2011.01965.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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18
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Bucci D, Spinaci M, Vallorani C, Contri A, Carluccio A, Isani G, Tamanini C, Galeati G. Detection and localization of GLUTs 1, 2, 3 and 5 in donkey spermatozoa. Reprod Domest Anim 2011; 45:e217-20. [PMID: 19930135 DOI: 10.1111/j.1439-0531.2009.01544.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
GLUTs are a family of proteins that facilitate the transport of glucose and other hexoses through the plasma membrane of the cells. GLUTs are present in mammalian spermatozoon's membrane in different isoforms and they supply metabolic substrates for all the cell's activities such as motility, homoeostasis and fertilization. As studies about donkey spermatozoa and their metabolism are lacking, this study was aimed at detecting GLUTs 1, 2, 3 and 5 presence by western blotting technique and at determining their localization on the plasma membrane by indirect immunofluorescence. Each protein showed a typical localization on the sperm cells' plasma membrane, differencing the one to the other on the basis of the hexose they transport. We also highlighted some differences between GLUTs distribution and molecular weight in donkey spermatozoa and its nearest relative, the horse.
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Affiliation(s)
- D Bucci
- Dipartimento di Morfofisiologia Veterinaria e Produzioni Animali, Università di Bologna, Ozzano Emilia, Bologna, Italy.
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19
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Fernández-Novell JM, Ballester J, Altirriba J, Ramió-Lluch L, Barberà A, Gomis R, Guinovart JJ, Rodríguez-Gil JE. Glucose and fructose as functional modulators of overall dog, but not boar sperm function. Reprod Fertil Dev 2011; 23:468-80. [PMID: 21426864 DOI: 10.1071/rd10120] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2010] [Accepted: 10/06/2010] [Indexed: 12/29/2022] Open
Abstract
The main aim of the present work was to test the effects of glucose and fructose on the phosphorylation levels of proteins linked to the control of overall sperm function in two species with very different metabolic characteristics, dog and boar. Incubation of dog spermatozoa with 10mM glucose increased serine phosphorylation of proteins related to cell cycle and signal transduction including cyclins B and E, Cdk2, Cdk6, Cdc6, PYK2, c-kit, Raf-1, TRK and several protein phosphatases. Incubation of dog spermatozoa with 10mM fructose decreased serine phosphorylation levels of cyclins B and D3, Cdk1/Cdc2, Cdk2, Cdk6, Akt, PI3 kinase, ERK-1 and protein kinase C. Incubation of boar spermatozoa with glucose or fructose did not modify any of the phosphorylation patterns studied. Given that one important difference between dog and boar spermatozoa is the presence of glucokinase (GK) in dog but not in boar, GK-transfected COS7 cells were incubated with either 10mM glucose or 10mM fructose. Incubation of GK-transfected cells with fructose decreased serine phosphorylation of cyclin A, ERK-2 and Hsp-70. In contrast, incubation of control COS7 cells with fructose increased serine phosphorylation of Cdk6, Cdk1/Cdc2, protein kinase C and Hsp-70. Incubation with glucose did not induce any significant effect. Our results indicate that monosaccharides act as signalling compounds in dog spermatozoa after ejaculation through changes in the phosphorylation levels of specific proteins. One of the factors that may be related to the action of sugars is the equilibrium of the total sperm hexokinase activity, in which the presence or absence of GK appears to be relevant.
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Affiliation(s)
- J M Fernández-Novell
- Department of Biochemistry and Molecular Biology, University of Barcelona, E-08028 Barcelona, Spain
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20
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Bucci D, Isani G, Spinaci M, Tamanini C, Mari G, Zambelli D, Galeati G. Comparative Immunolocalization of GLUTs 1, 2, 3 and 5 in Boar, Stallion and Dog Spermatozoa. Reprod Domest Anim 2010; 45:315-22. [DOI: 10.1111/j.1439-0531.2008.01307.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Casas I, Sancho S, Briz M, Pinart E, Bussalleu E, Yeste M, Bonet S. Freezability prediction of boar ejaculates assessed by functional sperm parameters and sperm proteins. Theriogenology 2009; 72:930-48. [DOI: 10.1016/j.theriogenology.2009.07.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2009] [Revised: 07/01/2009] [Accepted: 07/01/2009] [Indexed: 10/20/2022]
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22
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Feiden S, Wolfrum U, Wegener G, Kamp G. Expression and compartmentalisation of the glycolytic enzymes GAPDH and pyruvate kinase in boar spermatogenesis. Reprod Fertil Dev 2008; 20:713-23. [PMID: 18671919 DOI: 10.1071/rd08004] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2008] [Accepted: 05/18/2008] [Indexed: 12/13/2022] Open
Abstract
Boar spermatozoa contain isoforms of both glyceraldehyde 3-phosphate dehydrogenase (GAPDH, EC 1.2.1.12) and pyruvate kinase (PK, EC 2.7.1.40). The sperm-specific forms, GAPDH-S and PK-S, are tightly bound to cell structures. By immunofluorescence microscopy GAPDH-S and PK-S were localised in the principal piece of the boar sperm flagellum as well as in the acrosomal region of the sperm head and at the head-midpiece junction. The midpiece of the flagellum, however, contains isoforms of GAPDH and PK that were only recognised by antibodies against somatic GAPDH and PK, respectively, but not by the antibodies against GAPDH-S and PK-S. In sections of boar testis, GAPDH-S and PK-S were first detected in elongating spermatids when both the developing flagellum and the head were labelled with antibodies against GAPDH-S and PK-S. In contrast, antibodies against rabbit muscle GAPDH and PK labelled all developmental stages of germ cells and also neighbouring contractile cells. Thus, the structure-bound sperm-specific enzymes, GAPDH-S and PK-S, appeared only late in spermatogenesis simultaneously with the development of the structures to which they are bound. Anchoring glycolytic enzymes to structures in these mitochondria-free regions may secure ATP-production for both motility and acrosome function.
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Affiliation(s)
- Sandra Feiden
- Institute of Zoology, Molecular Physiology Section, Johannes Gutenberg University Mainz, Mainz, Germany
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23
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Immunodetection of hexose transporters in mammalian spermatozoa. Vet Res Commun 2008; 32 Suppl 1:S119-21. [PMID: 18696246 DOI: 10.1007/s11259-008-9102-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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24
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Rodriguez-Gil JE. Mammalian sperm energy resources management and survival during conservation in refrigeration. Reprod Domest Anim 2008; 41 Suppl 2:11-20. [PMID: 16984465 DOI: 10.1111/j.1439-0531.2006.00765.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
The present review has as its main aim to present an overview regarding the mechanisms utilized by mammalian sperm to manage its intracellular energy levels. This management will strongly influence the sperm's ability to maintain its overall function during its entire life span. Thus, the precise knowledge of these mechanisms will be of the utmost interest to optimize the systems utilized to conserve mammalian sperm for a medium-to-long time-lapse. Briefly, utilization of hexoses as energy substrates by mammalian sperm is very finely regulated from the very first step of its metabolization. Furthermore, the equilibrium among the separate, monosaccharide metabolization pathways in mammalian sperm depends on many factors. This prevents the possibility to draw a general vision of sperm energy utilization, which explains the results of all mammalian species in all points of the sperm life-cycle. To complicate the matter further, there are separate energy phenotypes among mammalian spermatozoa. The precise knowledge of these phenotypes is of the greatest importance in order to optimize the design of new extenders for sperm conservation in refrigerated conditions. Moreover, sugars can act on sperm not only as passive metabolic substrates, but also as direct function activators through mechanisms like specific changes in the tyrosine phosphorylation status of distinct proteins. Finally, mammalian sperm utilizes non-glucidic substrates like citrate and lactate to obtain energy in a regular form. This utilization is also finely regulated and of importance to maintain overall sperm function. This implies that the exact proportion of glucidic and non-glucidic energy substrates could be very important to optimize the survival ability of these cells in conservation.
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Affiliation(s)
- J E Rodriguez-Gil
- Unit of Animal Reproduction, Department Animal Medicine and Surgery, School of Veterinary Medicine, Autonomous University of Barcelona, Bellaterra, Spain.
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25
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Sancho S, Casas I, Ekwall H, Saravia F, Rodriguez-Martinez H, Rodriguez-Gil JE, Flores E, Pinart E, Briz M, Garcia-Gil N, Bassols J, Pruneda A, Bussalleu E, Yeste M, Bonet S. Effects of cryopreservation on semen quality and the expression of sperm membrane hexose transporters in the spermatozoa of Iberian pigs. Reproduction 2007; 134:111-21. [PMID: 17641093 DOI: 10.1530/rep-07-0118] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study evaluated the effects of cooling, freezing and thawing on the plasma membrane integrity, kinetics and expression of two sugar transporters glucose transporter-3 and -5 (GLUT-3 and GLUT-5) in spermatozoa from Iberian boars. Semen samples were collected twice weekly from eight young, fertile Iberian boars of the 'Entrepelado' and 'Lampiño' breeds. The samples were suspended in a commercial extender and refrigerated to 17 degrees C for transport to the laboratory (step A), where they were further extended with a lactose-egg yolk-based extender and chilled to 5 degrees C (step B) prior to freezing in the presence of glycerol (3%). Spermatozoa were assessed for plasma membrane integrity and sperm motility at each of the steps, including post-thaw (step C). Aliquots were also prepared for immunocytochemical localisation of the sugar transporters (fixed and thin smears for transmission and scanning electron microscopy levels respectively) and for SDS-PAGE electrophoresis and subsequent western blotting, using the same antibodies (rabbit anti-GLUT-3 and anti-GLUT-5 polyclonal antibodies). The results showed lower percentages of progressively motile spermatozoa at step C in both breeds, while the percentage of live spermatozoa was significantly lower only in the 'Entrepelado' breed. The results obtained from electron microscopy clearly showed that Iberian boar spermatozoa expressed the hexose transporters, GLUT-3 and GLUT-5. The pattern of expression, in terms of location and concentration, was characteristic in each case but, in the case of isoform GLUT-5, it remained constant during the different steps of freezing-thawing protocol. These results indicate that cryopreservation affects the status of sperm cells of Iberian boars by altering the distribution of some membrane receptors and decreasing the percentage values of parameters linked to sperm quality.
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Affiliation(s)
- S Sancho
- Biotechnology of Porcine Reproduction, University of Girona, Campus de Montilivi, s/n, 17071 Girona, Spain.
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26
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Feiden S, Stypa H, Wolfrum U, Wegener G, Kamp G. A novel pyruvate kinase (PK-S) from boar spermatozoa is localized at the fibrous sheath and the acrosome. Reproduction 2007; 134:81-95. [PMID: 17641091 DOI: 10.1530/rep-06-0250] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Boar spermatozoa contain a novel pyruvate kinase (PK-S) that is tightly bound at the acrosome of the sperm head and at the fibrous sheath in the principal piece of the flagellum, while the midpiece contains a soluble pyruvate kinase (PK). PK-S could not be solubilized by detergents, but by trypsin with no loss of activity. Purified PK-S as well as PK-S still bound to cell structures and soluble sperm PK have all kinetics similar to those of rabbit muscle PK-M1. The PK-S subunit had a relative molecular mass of 64 +/- 1 x 10(3) (n = 3), i.e. slightly higher than that of PK-M1, and carried an N-terminal extension (NH(2)-TSEAM-COOH) that is lacking in native PK-M1. Evidence is provided that PK-S is encoded by the PKM gene. Antibodies produced against the N-terminus of purified PK-S (NH(2)-TSEAMPKAHMDAG-COOH) were specific for PK-S as they did not react with somatic PKs or soluble sperm PK, while anti-PK-M1 recognized both sperm PKs. Immunofluorescence microscopy showed anti-PK-S to label the acrosome and the flagellar principal piece, whereas the midpiece containing the mitochondria was labelled only by anti-PK-M1. Immunogold labelling confirmed the localization of PK-S at the acrosome. In the principal piece, both polyclonal anti-PK-M1 and anti-PK-S were found at the fibrous sheath. Our results suggest that PK-S is a major component in the structural organization of glycolysis in boar spermatozoa.
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Affiliation(s)
- Sandra Feiden
- Molecular Physiology Section, Institute of Zoology, Johannes Gutenberg-University, Becherweg 9-11, D-55099 Mainz, Germany
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