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Ghafarizadeh AA, Malmir M, Naderi Noreini S, Faraji T, Ebrahimi Z. The effect of vitamin E on sperm motility and viability in asthenoteratozoospermic men: In vitro study. Andrologia 2020; 53:e13891. [PMID: 33236456 DOI: 10.1111/and.13891] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/06/2020] [Accepted: 10/07/2020] [Indexed: 11/29/2022] Open
Abstract
Induction of oxidative stress during the sperm preparation process for assisted reproductive techniques (ART) in men can weaken sperm parameters. Vitamin E (VE) is considered a factor in boosting male fertility. This experimental study (in vitro) aimed to assess the impact of VE supplementation on sperm quality and lipid peroxidation during sperm sampling at different times. For this mention, semen samples were collected from 50 asthenoteratozoospermic men. Samples were divided into control and test groups for 2, 4 and 6 hr that the test group was incubated with VE (2 mM). In two groups, total motility, progressive motility and viability based on the WHO 2010 criteria were assessed. Moreover, malondialdehyde (MDA) levels were evaluated in each group. In the control group, total and progressive motility and sperm viability were decreased significantly after 2 hr; however, MDA levels were increased significantly after 6 hr. Also, in the test group, sperm parameters were increased significantly after 2 hr, and MDA levels were decreased significantly after 6 hr compared to the control group. In outcome, in vitro VE supplementation may protect spermatozoa from the adverse effect of oxidative stress during sperm preparation via preservation antioxidant processes in normal condition.
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Affiliation(s)
| | - Mahdi Malmir
- Department of Midwifery, Tuyserkan Branch, Islamic Azad University, Tuyserkan, Iran
| | | | - Tayebeh Faraji
- Department of Midwifery, Tuyserkan Branch, Islamic Azad University, Tuyserkan, Iran
| | - Zeynab Ebrahimi
- Department of Midwifery, Tuyserkan Branch, Islamic Azad University, Tuyserkan, Iran
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USUGA ALEXANDRA, ROJANO BENJAMIN, RESTREPO GIOVANNI. Lyophilized seminal plasma can improve stallion semen freezability. THE INDIAN JOURNAL OF ANIMAL SCIENCES 2020. [DOI: 10.56093/ijans.v90i2.98769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The aim of this study was to evaluate the effect of lyophilized seminal plasma (LSP) on stallion semen freezability. Seminal plasma from 30 stallions was lyophilized to obtain a pool of LSP. Fifteen ejaculates from five stallions were supplemented before freezing with 0 mg/mL (Control), 1.44 mg/mL (LSP1), 5.04 mg/mL (LSP2) or 8.68 mg/ mL (LSP3) of LSP. Total antioxidant capacity (TAC) of LSP was assessed using Oxygen Radical Absorbance Capacity (ORAC) assay. Post-thaw motility and kinetics, sperm viability, normal morphology and membrane integrity were evaluated. Completely randomized mixed models were fitted for data analyses. The results was analyzed based on freezability of semen samples. TAC for LSP pool was 13679.4±911.6 μmol Trolox 100/g (ORAC units). Semen supplementation with LSP1 and LSP2 showed a positive effect on post-thaw total motility and membrane integrity. Supplementation with LSP3 showed a decrease in post-thaw total and progressive motility, straight line velocity and sperm viability. For poor freezability semen samples, supplementation with LSP1 and LSP2, showed higher post-thaw total motility and membrane integrity than good freezability semen samples. In conclusion, supplementation with LSP can improve the post-thaw seminal quality of stallion semen with poor freezability.
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Kumar P, Kumar R, Mehta JS, Chaudhary AK, Ravi SK, Chandra Mehta S, Ansari MM, Legha RA, Tripathi BN, Talluri TR. Ameliorative Effect of Ascorbic Acid and Glutathione in Combating the Cryoinjuries During Cryopreservation of Exotic Jack Semen. J Equine Vet Sci 2019; 81:102796. [PMID: 31668302 DOI: 10.1016/j.jevs.2019.102796] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Revised: 07/25/2019] [Accepted: 09/05/2019] [Indexed: 12/26/2022]
Abstract
The present study was designed to study the adverse effects of cryopreservation and evaluation of the cryoprotective effect of reduced glutathione (GSH) and ascorbic acid (AA) supplementation on exotic jack semen in combination or alone. For this, 24 semen samples from four adult and fertile jacks were collected via artificial vagina using an estrus jenny as dummy. After semen collection, the semen was evaluated for various qualitative and quantitative parameters in fresh, cooled, and frozen-thawed semen. The semen pellet was extended with the freezing extender containing either AA (0.9 g/L), GSH (2.5 mM), or combination of both (AA 0.9 g/L + GSH 2.5 mM), and another aliquot was kept as control without adding the antioxidants. The jack semen underwent cryodamage, which was evident by the observation of significant (P < .05) decline in the seminal quantitative parameters at various stages of cryopreservation process. Prefreeze and postthaw semen evaluation revealed that the values of plasma membrane, acrosome integrity, and chromatin integrity were found to be significantly higher (P < .01) in the group of samples supplemented with the combination (0.9 g/L AA +2.5 mM GSH) than AA- and GSH-alone or control groups. Supplementation of antioxidants to the freezing extender improved jack prefreeze and postthaw semen quality with the superiority of GSH over AA alone. From the present study, it was inferred that, exotic jack spermatozoa are susceptible to injuries because of cryopreservation, but these cryo-induced damage can be ameliorated significantly (P < .05) with the use of antioxidants and contribute to the improvement of semen cryopreservation procedures.
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Affiliation(s)
- Prashant Kumar
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Rabindra Kumar
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Jitendra Singh Mehta
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Ashok Kumar Chaudhary
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Sanjay Kumar Ravi
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Sharat Chandra Mehta
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Mohd Matin Ansari
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Ram Avtar Legha
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Bupendra Nath Tripathi
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India
| | - Thirumala Rao Talluri
- Equine Production Campus, ICAR-National Research Centre on Equines, Bikaner, Rajasthan, India.
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Sampaio BFB, Nogueira BG, Souza MIL, Silva EVDCE, Zúccari CESN. Effects of ascorbic acid 2-glucoside and alpha-tocopherol on the characteristics of equine spermatozoa stored at 5°C. Anim Sci J 2018; 89:1415-1423. [DOI: 10.1111/asj.12944] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 09/27/2017] [Indexed: 12/01/2022]
Affiliation(s)
- Breno Fernandes Barreto Sampaio
- Animal Science Post Graduate Program; School of Veterinary Medicine and Animal Science; Federal University of Mato Grosso do Sul; Campo Grande Brazil
| | - Bruno Gomes Nogueira
- Animal Science Post Graduate Program; School of Veterinary Medicine and Animal Science; Federal University of Mato Grosso do Sul; Campo Grande Brazil
| | - Maria Inês Lenz Souza
- Biological Science and Health Center; Federal University of Mato Grosso do Sul; Campo Grande Brazil
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Effects of coenzyme Q10 on semen cryopreservation of stallions classified as having good or bad semen freezing ability. Anim Reprod Sci 2018; 192:107-118. [DOI: 10.1016/j.anireprosci.2018.02.020] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Revised: 02/15/2018] [Accepted: 02/23/2018] [Indexed: 12/19/2022]
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Usuga A, Rojano B, Restrepo G. Effect of Seminal Plasma Components on the Quality of Fresh and Cryopreserved Stallion Semen. J Equine Vet Sci 2017. [DOI: 10.1016/j.jevs.2017.09.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Rossi M, Falomo ME, Mantovani R. Role of coenzyme Q and vitamin E on stallion semen motility evaluated both in frozen and cooled-stored semen. ITALIAN JOURNAL OF ANIMAL SCIENCE 2016. [DOI: 10.1080/1828051x.2016.1239511] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Benhenia K, Lamara A, Fatmi S, Iguer-Ouada M. Effect of cyclodextrins, cholesterol and vitamin E and their complexation on cryopreserved epididymal ram semen. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.06.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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9
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de Vasconcelos Franco JS, Faheem M, Chaveiro A, Moreira da Silva F. Effects of α-tocopherol and freezing rates on the quality and heterologous in vitro fertilization capacity of stallion sperm after cryopreservation. Theriogenology 2016; 86:957-962. [PMID: 27125690 DOI: 10.1016/j.theriogenology.2016.03.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2015] [Revised: 03/12/2016] [Accepted: 03/12/2016] [Indexed: 10/22/2022]
Abstract
The effects of supplementation of α-tocopherol and different freezing rates (FRs) on the ability of stallion sperm to fertilize bovine oocytes with intact zona pellucida were investigated, in an attempt to develop a model to assess cryopreserved sperm function. Semen was obtained from four purebred Lusitano stallions (n = 4). Each ejaculate was subjected to cryopreservation with a commercial extender (Ghent, Minitub Iberia, Spain), without any supplementation (control) or supplemented with 2-mM α-tocopherol. The semen was exposed to two different FRs between 5 °C and -15 °C: slow (5 °C/min) and moderate (10 °C/min). After thawing, the viability (SYBR®-14 and propidium iodide [PI]), mitochondrial membrane potential (JC-1, 5,5',6,6'-tetrachloro-1,1',3,3'tetraethylbenzimidazolyl carbocyanine iodine) and membrane lipid peroxidation (C11-BODIPY(581/591)) of each sample were determined by flow cytometry. Moreover, the heterologous IVF rate was measured to evaluate the fertilization capacity of postthaw semen in the four different treatments. For both extenders, the viability was higher for spermatozoa cooled slowly (39.40 ± 2.17 vs. 17.59 ± 2.25-control; 31.96 ± 2.19 vs. 11.46 ± 1.34-Tocopherol; P < 0.05). The α-tocopherol extender improved (P < 0.05) postthaw lipid peroxidation (10.28 ± 0.70 vs. 15.40 ± 0.95-slow FR; 10.14 ± 0.40 vs. 13.48 ± 0.34-moderate FR); however, it did not improve viability and mitochondrial membrane potential. Regarding the IVF rate, in the moderate FR, α-tocopherol supplementation reported a higher percentage of IVF (20.50 ± 2.11; P < 0.05), comparing with the control (14.00 ± 1.84). Regarding the slow FR, no significance differences were observed for percentage of IVF between the two extenders and the FRs. However, it seems that the α-tocopherol supplementation improved the IVF rate. In conclusion, this research reported that bovine oocytes intact zona pellucida can be used to evaluate the quality of postthaw stallion semen and α-tocopherol supplementation in the stallion freezing extender might exert a protective effect against oxidative damage during heterologous IVF.
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Affiliation(s)
- J S de Vasconcelos Franco
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, CITA-A, Angra do Heroísmo, Portugal.
| | - M Faheem
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, CITA-A, Angra do Heroísmo, Portugal; Animal Production Department, Faculty of Agriculture, Cairo University, Giza, Egypt
| | - A Chaveiro
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, CITA-A, Angra do Heroísmo, Portugal
| | - F Moreira da Silva
- Animal Reproduction, Department of Agrarian Sciences, University of the Azores, CITA-A, Angra do Heroísmo, Portugal
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Martins HS, Souza MR, Penna CFAM, da Silva GC, Côrtes SF, Stahlberg R, Lagares MA. Milk, caseinate and lactoferrin addition to equine semen cooling extenders. Andrologia 2016; 48:862-868. [PMID: 27739145 DOI: 10.1111/and.12523] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/02/2015] [Indexed: 12/01/2022] Open
Abstract
Cooled semen has been used routinely to prolong sperm viability until artificial insemination time. However, spermatozoa are subjected to oxidative stress. The aim of the present work was to investigate the protective and antioxidant effect of the milk proteins lactoferrin (Lf) and caseinate added to equine semen cooling extenders. Semen from six stallions was cooled at 5 °C after resuspension with C1) milk- and glucose-based, C2) 0.6% caseinate, C3) C2 + Lf 200 μg ml-1 , C4) C2 + Lf 500 μg ml-1 and C5) C2 + Lf 1000 μg ml-1 extenders, and kept at 5 °C for 24 h. Sperm motility characteristics and intact membrane rates were not different among the treatments (P > 0.05). As a result of the cooling process, the nitrite concentration increased significantly in the cooled semen (69.6 ± 78.9 μm per ×106 spermatozoa) compared with the fresh semen (8.6 ± 1.9 μm per ×106 spermatozoa). In contrast, the H2 O2 concentrations were lower in the 0.6% caseinate extender (265.9 ± 221.3 μm per ×106 spermatozoa) than in the milk extender (430.9 ± 199.8 μm per ×106 spermatozoa, P < 0.05), showing an antioxidative effect of the caseinate compared with the milk. However, in all groups, hydrogen peroxide concentrations were similar to the undiluted fresh semen (332.8 ± 151.3 μm per ×106 spermatozoa). Caseinate showed to be as efficient as milk to protect equine-cooled spermatozoon.
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Affiliation(s)
- H S Martins
- Clinic and surgery department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M R Souza
- Technology and Inspection of Products of Animal, Origin Department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - C F A M Penna
- Technology and Inspection of Products of Animal, Origin Department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - G C da Silva
- Institute of Biological Sciences of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - S F Côrtes
- Institute of Biological Sciences of the Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - R Stahlberg
- Veterinary Faculty, PUC Minas, Betim, Bairro Angola, Betim, MG, Brazil
| | - M A Lagares
- Clinic and surgery department, Veterinary School, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil.
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Nogueira BG, Sampaio BFB, Souza MIL, Costa e Silva EV, Zúccari CESN. Coenzyme Q10 andα-Tocopherol Prevent the Lipid Peroxidation of Cooled Equine Semen. Reprod Domest Anim 2015; 50:1003-10. [DOI: 10.1111/rda.12627] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2015] [Accepted: 09/13/2015] [Indexed: 01/13/2023]
Affiliation(s)
- BG Nogueira
- Biotechnology of Animal Reproduction Laboratory; Veterinary and Animal Science College; Federal University of Mato Grosso do Sul; Campo Grande Mato Grosso do Sul Brazil
| | - BFB Sampaio
- Biotechnology of Animal Reproduction Laboratory; Veterinary and Animal Science College; Federal University of Mato Grosso do Sul; Campo Grande Mato Grosso do Sul Brazil
| | - MIL Souza
- Biotechnology of Animal Reproduction Laboratory; Veterinary and Animal Science College; Federal University of Mato Grosso do Sul; Campo Grande Mato Grosso do Sul Brazil
| | - EV Costa e Silva
- Biotechnology of Animal Reproduction Laboratory; Veterinary and Animal Science College; Federal University of Mato Grosso do Sul; Campo Grande Mato Grosso do Sul Brazil
| | - CESN Zúccari
- Biotechnology of Animal Reproduction Laboratory; Veterinary and Animal Science College; Federal University of Mato Grosso do Sul; Campo Grande Mato Grosso do Sul Brazil
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Effect of argan oil on liquid storage of ram semen in Tris or skim milk based extenders. Anim Reprod Sci 2015; 160:57-67. [DOI: 10.1016/j.anireprosci.2015.07.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 07/10/2015] [Accepted: 07/17/2015] [Indexed: 12/18/2022]
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Teixeira S, Chaveiro A, Moreira da Silva F. Effect of Conjugated Linoleic Acid on Boar Semen Quality After Long-term Refrigeration at 17°C. Reprod Domest Anim 2015; 50:604-10. [PMID: 25976112 DOI: 10.1111/rda.12535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Accepted: 04/19/2015] [Indexed: 11/29/2022]
Abstract
In this study, the effect of conjugated linoleic acid (10 trans, 12 cis) (CLA) on refrigerated boar sperm quality parameters up to 14 days at 17°C was assessed. Semen was extended in Androhep and divided into four treatments supplemented with CLA (25, 50, 100 and 200 μm) and control group, then kept for 2 h at 22°C. Afterwards an aliquot of each treatment was removed, and mitochondrial activity, viability, lipid membrane peroxidation (LPO) and stability of the sperm plasma membrane were assessed by flow cytometry. The remaining extended semen was maintained at 17°C until 336 h, repeating the same analysis every 48 h. Regarding percentage of live spermatozoa, no statistical differences were observed among treatments up to 96 h. After this time, viability decreased significantly (p < 0.05) for CLA concentrations of 100 and 200 μm. Despite these results, there was an individual response to CLA. Although in the control group, the boar A presented better results when compared with the other boars, especially at concentrations of 50 and 100 μm boar B showed significantly higher results (p < 0.05). Supplementation with CLA improved (p < 0.05) LPO, but not the mitochondrial membrane potential of sperm. The highest two CLA concentrations showed to be toxic for sperm as all results were lower than the observed for the control. In conclusion, CLA at 50 μm seems to be an efficient concentration for reducing the oxidative stress, decreasing LPO, maintaining viability, membrane stability and mitochondrial potential on refrigerated boar spermatozoa.
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Affiliation(s)
- Smp Teixeira
- Department of Agrarian Sciences, Animal Reproduction, CITA-A, University of the Azores, Angra do Heroísmo, Portugal
| | - A Chaveiro
- Department of Agrarian Sciences, Animal Reproduction, CITA-A, University of the Azores, Angra do Heroísmo, Portugal
| | - F Moreira da Silva
- Department of Agrarian Sciences, Animal Reproduction, CITA-A, University of the Azores, Angra do Heroísmo, Portugal
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The Effect of Coenzyme Q10 and α-Tocopherol in Skim Milk–Based Extender for Preservation of Caspian Stallion Semen in Cool Condition. J Equine Vet Sci 2014. [DOI: 10.1016/j.jevs.2014.04.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Doelling ARW, Griffis N, Williams JB. Repeated freezing induces oxidative stress and reduces survival in the freeze-tolerant goldenrod gall fly, Eurosta solidaginis. JOURNAL OF INSECT PHYSIOLOGY 2014; 67:20-27. [PMID: 24910457 DOI: 10.1016/j.jinsphys.2014.05.024] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Revised: 05/27/2014] [Accepted: 05/29/2014] [Indexed: 06/03/2023]
Abstract
Freeze tolerant insects must not only survive extracellular ice formation but also the generation of reactive oxygen species (ROS) during oxygen reperfusion upon thawing. Furthermore, diurnal fluctuations in temperature place temperate insects at risk of being exposed to multiple freeze-thaw cycles, yet few studies have examined metrics of survival and oxidative stress in freeze-tolerant insects subjected to successive freezing events. To address this, we assessed survival in larvae of the goldenrod gall fly Eurosta solidaginis, after being subjected to 0, 5, 10, 20, or 30 diurnally repeated cold exposures (RCE) to -18°C or a single freeze to -18°C for 20days. In addition, we measured indicators of oxidative stress, levels of cryoprotectants, and total aqueous antioxidant capacity in animals exposed to the above treatments at 8, 32, or 80h after their final thaw. Repeated freezing and thawing, rather than time spent frozen, reduced survival as only 30% of larvae subjected to 20 or 30 RCE successfully pupated, compared to those subjected to fewer RCE or a single 20d freeze, of which 82% pupated. RCE had little effect on the concentration of the cryoprotectant glycerol (4.26±0.66μgglycerol·ngprotein(-1) for all treatments and time points) or sorbitol (18.8±2.9μgsorbitol·mgprotein(-1) for all treatments and time points); however, sorbitol concentrations were more than twofold higher than controls (16.3±2.2μgsorbitol·mgprotein(-1)) initially after a thaw in larvae subjected to a single extended freeze, but levels returned to values similar to controls at 80h after thaw. Thawing likely produced ROS as total aqueous antioxidant capacities peaked at 1.8-fold higher than controls (14.7±1.6mmoltrolox·ngprotein(-1)) in animals exposed to 5, 10, or 20 RCE. By contrast, aqueous antioxidant capacities were similar to controls in larvae subjected to 30 RCE or the single 20d freeze regardless of time post final thaw, indicating these animals may have had an impaired ability to produce primary antioxidants. Larvae lacking an antioxidant response also had elevated levels of oxidized proteins, nearly twice that of controls (21.8±3.2mmolchloramine-T·mgprotein(-1)). Repeated freezing also lead to substantial oxidative damage to lipids that was independent of aqueous antioxidant capacity; peroxides were, on average, 5.6-fold higher in larvae subjected to 10, 20 or 30 RCE compared to controls (29.1±7.3mmolTMOP·μgprotein(-1)). These data suggest that oxidative stress due to repeated freeze-thaw cycles reduces the capacity of E. solidaginis larvae to survive freezing.
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Affiliation(s)
- Adam R W Doelling
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL 62026, USA
| | - Nicole Griffis
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL 62026, USA
| | - Jason B Williams
- Department of Biological Sciences, Southern Illinois University Edwardsville, Edwardsville, IL 62026, USA.
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Vasconcelos Franco JS, Chaveiro A, da Silva FM. Effect of Freezing Rates and Supplementation of α-Tocopherol in the Freezing Extender in Equine Sperm Cryosurvival. J Equine Vet Sci 2014. [DOI: 10.1016/j.jevs.2014.05.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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