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Min CG, Ma X, Wang YC, Zhong CK, Yuan CS, Zhang KY, Zhan CL, Hou SK, Wang XH, Wang J, Zhao J, Fang Y, Liu HY, Ding H, Guo J, Lu WF. The effects of repeated freezing and thawing on bovine sperm morphometry and function. Cryobiology 2024; 115:104892. [PMID: 38593909 DOI: 10.1016/j.cryobiol.2024.104892] [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: 11/19/2023] [Revised: 03/14/2024] [Accepted: 04/02/2024] [Indexed: 04/11/2024]
Abstract
Refreezing the remaining genetic resources after in vitro fertilization (IVF) can conserve genetic materials. However, the precise damage inflicted by repeated freezing and thawing on bovine sperm and its underlying mechanism remain largely unexplored. Thus, this study investigates the impact of repeated freeze-thaw cycles on sperm. Our findings indicate that such cycles significantly reduce sperm viability and motility. Furthermore, the integrity of the sperm plasma membrane and acrosome is compromised during this process, exacerbating the advanced apoptosis triggered by oxidative stress. Additionally, transmission electron microscopy exposed severe damage to the plasma membranes of both the sperm head and tail. Notably, the "9 + 2" structure of the tail was disrupted, along with a significant decrease in the level of the axonemal protein DNAH10, leading to reduced sperm motility. IVF outcomes revealed that repeated freeze-thaw cycles considerably impair sperm fertilization capability, ultimately reducing the blastocyst rate. In summary, our research demonstrates that repeated freeze-thaw cycles lead to a decline in sperm viability and motility, attributed to oxidative stress-induced apoptosis and DNAH10-related dynamic deficiency. As a result, the utility of semen is compromised after repeated freezing.
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Affiliation(s)
- Chang-Guo Min
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Xin Ma
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Yu-Chan Wang
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Cheng-Kun Zhong
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Chong-Shan Yuan
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Kai-Yan Zhang
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Cheng-Lin Zhan
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Sheng-Kui Hou
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Xin-Hai Wang
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Jun Wang
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Jing Zhao
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Yi Fang
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Hong-Yu Liu
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - He Ding
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China
| | - Jing Guo
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China.
| | - Wen-Fa Lu
- Key Laboratory of the Animal Production, Product Quality and Security, Ministry of Education, Jilin Agricultural University, Changchun, Jilin, China; Jilin Provincial International Joint Research Center of Animal Breeding and Reproduction Technology, Jilin Agricultural University, Changchun, Jilin, China; College of Animal Science and Technology, Jilin Agricultural University, Changchun, Jilin, China.
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Kussler APDS, Bustamante IC, Negri E, Capp E, Corleta HVE. Timing of semen cryopreservation: before or after processing? REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRÍCIA 2024; 46:e-rbgo36. [PMID: 38765530 PMCID: PMC11075422 DOI: 10.61622/rbgo/2024rbgo36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Accepted: 12/26/2023] [Indexed: 05/22/2024] Open
Abstract
Objective Seminal cryopreservation causes significant damage to the sperm; therefore, different methods of cryopreservation have been studied. The aim of the study was to compare the effects of density gradient processing and washing/centrifugation with seminal plasma removal for cryopreservation in semen parameters. Methods Seminal samples of 26 normozoospermic patients were divided into 3 parts: with seminal plasma; after washing/centrifugation; and after selection through density gradient. The samples were cryopreserved for at least two weeks. Motility, sperm count, morphology and viability were evaluated before cryopreservation and after thawing. Results Density gradient processing selected motile and viable sperm with normal morphology in fresh samples (p<0.05). Cryopreservation negatively affected all sperm parameters regardless of the processing performed, and even if the sperm recovery was lower in the density gradient after the thawing, progressive motility, total motility, viability and morphology remained higher (p<0.05). Conclusion Cryopreservation significantly compromises sperm parameters (motility, morphology, viability). In normozoospermic patients, the density gradients select better quality spermatozoa compared to other processing methods; this benefit was kept after thawing.
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Affiliation(s)
- Ana Paula de Souza Kussler
- Universidade Federal do Rio Grande do SulFaculdade de MedicinaPorto AlegreRSBrazilFaculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Generar Reprodução HumanaPorto AlegreRSBrazilGenerar Reprodução Humana, Porto Alegre, RS, Brazil.
| | - Ivan Cunha Bustamante
- Universidade do Vale do TaquariLajeadoRSBrazilUniversidade do Vale do Taquari, Lajeado, RS, Brazil.
| | - Elisa Negri
- Universidade Federal do Rio Grande do SulFaculdade de MedicinaPorto AlegreRSBrazilFaculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
| | - Edison Capp
- Universidade Federal do Rio Grande do SulFaculdade de MedicinaPorto AlegreRSBrazilFaculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Hospital de Clínicas de Porto AlegrePorto AlegreRSBrazilHospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
| | - Helena von Eye Corleta
- Universidade Federal do Rio Grande do SulFaculdade de MedicinaPorto AlegreRSBrazilFaculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
- Generar Reprodução HumanaPorto AlegreRSBrazilGenerar Reprodução Humana, Porto Alegre, RS, Brazil.
- Hospital de Clínicas de Porto AlegrePorto AlegreRSBrazilHospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
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3
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Yang S, Gao X, Zhang T, Cai F, Zhang H. Density Gradient Centrifugation Alone or the Combination of DGC with Annexin V Magnetic-Activated Cell Sorting Prior to Cryopreservation Enhances the Postthaw Quality of Sperm from Infertile Male Patients with Poor Sperm Quality. Andrologia 2023. [DOI: 10.1155/2023/9030902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/07/2023] Open
Abstract
Objective. To examine whether density gradient centrifugation (DGC) alone or its combination with annexin V magnetic-activated cell sorting (DGC-MACS) can be used to process semen samples from infertile male patients with poor sperm quality prior to subjecting these to freeze/thaw process in order to optimize the outcomes of sperm freezing. Methods. This study enrolled sixteen patients with sperm
, sperm
%, and/or <4% normal sperm morphology. Sperms were processed by DGC or DGC-MACS prior to the freeze/thaw process. Sperm motility, hyperosmotic swelling test (HOS), TUNEL test, and morphological analysis were performed before and after the freeze/thaw process. Results. The freeze/thaw process had a detrimental effect on sperm motility, viability, morphology, and DNA integrity in all three groups (RAW, DGC, and DGC + MACS groups). The DGC and DGC + MACS groups showed increased sperm motility, viability, and normal morphology following freeze/thaw than untreated frozen controls. The motility and viability were not significantly different between DGC-MACS-CPT (cryopreservation-thawing) and DGC-CPT groups. Moreover, almost no grade A or grade B sperm was observed in the DGC-MACS-CPT groups. The sperm selected by DGC or DGC + MACS showed decreased levels of sperm DNA fragmentation than RAW samples following freeze/thaw. Moreover, the sperm DNA fragmentation following freeze/thaw in the DGC-MACS-CPT group was significantly lower than that in the DGC-CPT group. Conclusions. Sperm preparation by DGC before cryopreservation improved the quality of sperm postthaw in infertile males with poor sperm quality. If the sperm quality following freeze/thaw is foreseen to be insufficient for artificial insemination with husband’s sperm or in vitro fertilization, or if there is high DNA fragmentation in RAW sperm, DGC + MACS should be used prior to cryopreservation to reduce sperm DNA fragmentation and improve the quality of sperm available for intracytoplasmic sperm injection.
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Affiliation(s)
- Sijie Yang
- Center for Reproductive Medicine, Shandong University, Jinan, 250012 Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012 Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012 Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012 Shandong, China
| | - Xuan Gao
- Center for Reproductive Medicine, Shandong University, Jinan, 250012 Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012 Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012 Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012 Shandong, China
| | - Taijian Zhang
- Center for Reproductive Medicine, Shandong University, Jinan, 250012 Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012 Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012 Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012 Shandong, China
| | - Feifei Cai
- Center for Reproductive Medicine, Shandong University, Jinan, 250012 Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012 Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012 Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012 Shandong, China
| | - Haobo Zhang
- Center for Reproductive Medicine, Shandong University, Jinan, 250012 Shandong, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, 250012 Shandong, China
- Shandong Key Laboratory of Reproductive Medicine, Jinan, 250012 Shandong, China
- Shandong Provincial Clinical Research Center for Reproductive Health, Jinan, 250012 Shandong, China
- The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012 Shandong, China
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4
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Gholami D, Sharafi M, Esmaeili V, Nadri T, Alaei L, Riazi G, Shahverdi A. Beneficial effects of trehalose and gentiobiose on human sperm cryopreservation. PLoS One 2023; 18:e0271210. [PMID: 37053285 PMCID: PMC10101468 DOI: 10.1371/journal.pone.0271210] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Accepted: 06/25/2022] [Indexed: 04/15/2023] Open
Abstract
The protection of human sperm during cryopreservation is of great importance to infertility. Recent studies have shown that this area is still a long way from its ultimate aim of maintaining the maximum viability of sperm in cryopreservation. The present study used trehalose and gentiobiose to prepare the human sperm freezing medium during the freezing-thawing. The freezing medium of sperm was prepared with these sugars, and the sperm were then cryopreserved. The viable cells, sperm motility parameters, sperm morphology, membrane integrity, apoptosis, acrosome integrity, DNA fragmentation, mitochondrial membrane potential, reactive oxygen radicals, and malondialdehyde concentration was evaluated using standard protocols. A higher percentage of the total and progressive motility, rate of viable sperm, cell membrane integrity, DNA and acrosome integrity, and mitochondrial membrane potential were observed in the two frozen treatment groups compared to the frozen control. The cells had less abnormal morphology due to treatment with the new freezing medium than the frozen control. The higher malondialdehyde and DNA fragmentation were significantly observed in the two frozen treatment groups than in the frozen control. According to the results of this study, the use of trehalose and gentiobiose in the sperm freezing medium is a suitable strategy for sperm freezing to improve its motion and cellular parameters.
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Affiliation(s)
- Dariush Gholami
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
- Faculty of Biotechnology, Amol University of Special Modern Technologies, Amol, Iran
- Department of Embryology at Reproduction Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACER, Tehran, Iran
| | - Mohsen Sharafi
- Department of Poultry Science, Faculty of Agriculture, Tarbiat Modares University, Tehran, Iran
| | - Vahid Esmaeili
- Department of Embryology at Reproduction Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACER, Tehran, Iran
| | - Touba Nadri
- Department of Animal Science, Faculty of Agriculture, Urmia University, Urmia, Iran
| | - Loghman Alaei
- Department of Biological Science, Faculty of Science, University of Kurdistan, Sanandaj, Iran
| | - Gholamhossein Riazi
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Abdolhossein Shahverdi
- Department of Embryology at Reproduction Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACER, Tehran, Iran
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5
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Hughes G, Martins da Silva S. Sperm cryopreservation for impaired spermatogenesis. REPRODUCTION AND FERTILITY 2022; 4:RAF-22-0106. [PMID: 36547401 PMCID: PMC9874962 DOI: 10.1530/raf-22-0106] [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: 10/10/2022] [Accepted: 12/22/2022] [Indexed: 12/24/2022] Open
Abstract
Sperm cryopreservation for men with severely impaired spermatogenesis is one of the commonest reasons for short-term sperm storage, usually in advance of fertility treatment. Cryopreservation is generally very effective, although not all spermatozoa survive the process of freezing and thawing. This review considers various aspects of freezing sperm, including an overview of methods, appropriate use of cryoprotectants and practical considerations, as well as oxidative stress and mechanisms of cell cryodamage.
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Affiliation(s)
- G Hughes
- Assisted Conception Unit, Ninewells Hospital, Dundee, UK
| | - S Martins da Silva
- Assisted Conception Unit, Ninewells Hospital, Dundee, UK
- Reproductive Medicine Research Group, School of Medicine, Ninewells Hospital and Medical School, University of Dundee, Dundee, UK
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6
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Mahdavinezhad F, Gilani MAS, Gharaei R, Ashrafnezhad Z, Valipour J, Nashtai MS, Amidi F. Protective roles of seminal plasma exosomes and microvesicles during human sperm cryopreservation. Reprod Biomed Online 2022; 45:341-353. [DOI: 10.1016/j.rbmo.2022.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/25/2022] [Accepted: 03/31/2022] [Indexed: 10/18/2022]
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7
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Androni DA, Dodds S, Tomlinson M, Maalouf WE. Is pre-freeze sperm preparation more advantageous than post-freeze? REPRODUCTION AND FERTILITY 2022; 2:17-25. [PMID: 35128430 PMCID: PMC8812453 DOI: 10.1530/raf-20-0041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 01/29/2021] [Indexed: 11/08/2022] Open
Abstract
Human sperm cryopreservation is characterised to this day by sub-optimal success rates. Interestingly, a traditional approach to improving post-thaw outcome has been to integrate standard sperm preparation techniques into freezing protocols as a means of selecting sperm with the highest fertilisation potential prior to insemination. However, no consensus has been reached yet regarding the optimal timing (before or after freezing) of this selection step. Following analysis of a total of 20 human semen samples, which were divided into two aliquots prepared by density gradient centrifugation either before or after freezing, this study demonstrated higher post-thaw total (P < 0.0001), progressively motile (P = 0.005) and vital (P < 0.0001) sperm counts for frozen-prepared semen samples. The present study suggests that direct insemination with frozen-prepared sperm with minimal intervening post-thaw processing might be a more advantageous approach to current clinical practices, particularly for donor and patient intrauterine insemination programmes. Further research into cryopreservation-induced coiled sperm tail morphology is also warranted. Lay summary Freezing and storing of sperm in liquid nitrogen ('sperm cryopreservation') is the current method of choice for preserving the fertility of a wide scope of men. Nevertheless, sub-optimal sperm survival is still associated with traditional cryopreservation methods, namely 'slow freezing', and may affect fertility treatment success rates. Interestingly, a widely applied approach for selecting high-quality sperm before treatment has been to incorporate 'sperm preparation' techniques, such as density gradient centrifugation, in slow freezing protocols. There is, however, an ongoing debate regarding which is the optimal timing of this selection step: before or after freezing. In this study, we collected 20 human semen samples which were divided into two portions and subjected to density gradient centrifugation either before or after freezing. Post-thaw semen analyses demonstrated significantly improved sperm counts (P < 0.05) when density gradient centrifugation was performed before freezing, thus suggesting this approach to be more advantageous for current clinical practices.
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Affiliation(s)
| | | | - Mathew Tomlinson
- Fertility Unit, Nottingham University Hospital, Nottingham, UK.,School of Medicine, Division Child Health, Obstetrics and Gynaecology, Queen's Medical Centre, Nottingham, UK
| | - Walid E Maalouf
- School of Medicine, Division Child Health, Obstetrics and Gynaecology, Queen's Medical Centre, Nottingham, UK
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8
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Pons-Rejraji H, Vorilhon S, Difrane A, Dollet S, Bourgne C, Berger M, Chaput L, Pereira B, Bouche C, Drevet JR, Brugnon F. Beneficial effects of hypotaurine supplementation in preparation and freezing media on human sperm cryo-capacitation and DNA quality. Basic Clin Androl 2021; 31:26. [PMID: 34732137 PMCID: PMC8567682 DOI: 10.1186/s12610-021-00144-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 08/27/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Although widely used, slow freezing considerably modifies the functions of human spermatozoa. Cryopreservation induces nuclear sperm alterations and cryo-capacitation, reducing the chances of pregnancy. Hypotaurine is naturally present in the male and female genital tracts and has capacitating, osmolytic and anti-oxidant properties. The analysis were performed on surplus semen of men with normal (n = 19) or abnormal (n = 14) sperm parameters. Spermatozoa were selected by density gradient centrifugation before slow freezing. For each sample, these steps were performed in parallel with ("H+" arm) or without ("H-" arm) hypotaurine supplementation. After thawing, we measured total and progressive mobility, vitality, acrosome integrity, markers of capacitation signaling pathway and nuclear quality. For the latter, we focused on sperm chromatin packaging, DNA fragmentation and the presence of vacuoles in the sperm nucleus. RESULTS Post-thaw spermatozoa selected and frozen in the presence of hypotaurine had a higher vitality (+ 16.7%, p < 0.001), progressive and total motility (+ 39.9% and + 21.6% respectively, p < 0.005) than spermatozoa from the control "H-" arm. Hypotaurine also reduced the non-specific phosphorylation of the capacitation protein markers P110 and P80 (p < 0.01), indicating a decrease in cryo-capacitation. Hypotaurine supplementation reduced chromatin decondensation, measured by chromomycin A3 (- 16.1%, p < 0.05), DNA fragmentation (- 18.7%, p < 0.05) and nuclear vacuolization (- 20.8%, p < 0.05). CONCLUSION Our study is the first to demonstrate beneficial effects of hypotaurine supplementation in preparation and freezing procedures on human spermatozoa sperm fertilization capacity and nucleus quality. Hypotaurine supplementation limited cryo-capacitation, increased the proportion of live and progressively motile spermatozoa and reduces the percentage of spermatozoa showing chromatin decondensation, DNA fragmentation and nuclear vacuolation. TRIAL REGISTRATION Clinical Trial, NCT04011813 . Registered 19 May 2019 - Retrospectively registered.
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Affiliation(s)
- Hanae Pons-Rejraji
- CHU Clermont Ferrand, CHU Estaing, Assistance Médicale à la Procréation - CECOS, F-63003, Clermont-Ferrand, France. .,Université Clermont Auvergne, INSERM 1240, IMoST, F-63000, Clermont-Ferrand, France.
| | - Solène Vorilhon
- CHU Clermont Ferrand, CHU Estaing, Assistance Médicale à la Procréation - CECOS, F-63003, Clermont-Ferrand, France
| | - Asmaa Difrane
- CHU Clermont Ferrand, CHU Estaing, Assistance Médicale à la Procréation - CECOS, F-63003, Clermont-Ferrand, France
| | - Sandra Dollet
- Université Clermont Auvergne, INSERM 1240, IMoST, F-63000, Clermont-Ferrand, France
| | - Céline Bourgne
- CHU Clermont Ferrand, CHU Estaing, Laboratoire d'Hématologie Biologique, F-63003, Clermont-Ferrand, France
| | - Marc Berger
- CHU Clermont Ferrand, CHU Estaing, Laboratoire d'Hématologie Biologique, F-63003, Clermont-Ferrand, France
| | - Laure Chaput
- CHU Clermont Ferrand, CHU Estaing, Assistance Médicale à la Procréation - CECOS, F-63003, Clermont-Ferrand, France.,Université Clermont Auvergne, INSERM 1240, IMoST, F-63000, Clermont-Ferrand, France
| | - Bruno Pereira
- CHU Clermont-Ferrand, DRCI, Biostatistics Unit 'Délégation Recherche Clinique et Innovation', Clermont-Ferrand, France
| | - Cyril Bouche
- CHU Clermont Ferrand, CHU Estaing, Assistance Médicale à la Procréation - CECOS, F-63003, Clermont-Ferrand, France
| | - Joël R Drevet
- Université Clermont Auvergne, CNRS UMR6293, INSERM U1103, GReD, F-63000, Clermont-Ferrand, France
| | - Florence Brugnon
- CHU Clermont Ferrand, CHU Estaing, Assistance Médicale à la Procréation - CECOS, F-63003, Clermont-Ferrand, France.,Université Clermont Auvergne, INSERM 1240, IMoST, F-63000, Clermont-Ferrand, France
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9
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Sicchieri F, Silva AB, Santana VP, Vasconcelos MAC, Ferriani RA, Vireque AA, Dos Reis RM. Phosphatidylcholine and L-acetyl-carnitine-based freezing medium can replace egg yolk and preserves human sperm function. Transl Androl Urol 2021; 10:397-407. [PMID: 33532327 PMCID: PMC7844480 DOI: 10.21037/tau-20-1004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Conventional cryopreservation methods induce chemical and mechanical damage to the sperm membranes. The cryoprotectant potential of phospholipids of vegetal origin as soybean lecithin has been investigated as a substitute for egg yolk in diluents used for the cryopreservation of human spermatozoa. Therefore, the objective of this study was comparing the efficacy of a synthetic cryoprotectant supplemented with L-α-phosphatidylcholine (PC) and L-acetyl-carnitine (ANTIOX-PC) and the standard egg-based TEST-yolk buffer (TYB) in preserving sperm motility and chromatin quality in cryopreserved semen samples. Methods Prospective experimental study in which semen samples from 63 men with normal sperm motility and 58 men with low sperm motility were included and analyzed both before and after cryopreservation using ANTIOX-PC or TYB freezing media. Sperm quality was evaluated by routine semen analysis and DNA fragmentation index using the Terminal deoxynucleotidyl transferase dUTP nick end labeling assay. Results Differences in the post-thaw progressive motility and DNA fragmentation index were not detected between TYB and ANTIOX-PC cryoprotectants in both normal and low sperm motility groups (P>0.05). However, ANTIOX-PC medium retained higher non-progressive motility and lower percentage of immotile sperm when compared to TYB medium, resulting in a greater total motile sperm count (P<0.05), regardless baseline values of motility characteristic of the normospermic or asthenozoospermic samples. Conclusions ANTIOX-PC medium was effective to protect human sperm during a freeze-thaw cycle compared to the TYB medium. A clinically relevant advantage in better preserving kinetic parameters as higher total motility and lower immotile post-thawed sperm from ANTIOX-PC, in normal and low motility semen samples, demonstrated the positive impact of phospholipid and antioxidant treatment on sperm cryotolerance with high potential for egg yolk lipids replacement and biosafety.
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Affiliation(s)
- Fernanda Sicchieri
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Aline Bomfim Silva
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Viviane Paiva Santana
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | | | - Rui Alberto Ferriani
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,National Institutes of Hormones and Woman's Health, CNPq, Brazil
| | - Alessandra Aparecida Vireque
- Invitra - Assisted Reproductive Technologies Ltd., Supera Innovation and Technology Park, Ribeirão Preto, São Paulo, Brazil
| | - Rosana Maria Dos Reis
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.,National Institutes of Hormones and Woman's Health, CNPq, Brazil
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10
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Zaghi B, Barda S, Kleiman SE, Hauser R. Impact of time between repeated sperm freezing cycles on sperm quality. Reprod Biol 2019; 20:75-80. [PMID: 31879229 DOI: 10.1016/j.repbio.2019.12.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 12/14/2019] [Accepted: 12/17/2019] [Indexed: 11/17/2022]
Abstract
Refreezing of sperm samples would provide the possibility of performing more cycles of fertility treatments. Although the effect of repeated cycles of freezing on sperm quality was studied, the effect of the length of the time interval between each freeze-thaw cycle has not been reported. Hence, we assessed the effect of incubation time on the sperm quality of thawed sperm after repeated freezing. One-hundred samples of potential sperm donations with normal sperm quality were evaluated. The fresh semen samples were analyzed and cryopreserved in liquid nitrogen until use. After thawing, the samples were divided randomly to two groups and reanalyzed for motility, vitality, and DNA fragmentation. They were incubated at room temperature and reanalyzed after either 90 min (group A) or 180 min (group B) of incubation, and once again after a repeated cycle of freezing and thawing. Our results showed that the sperm parameters of fresh samples of both groups were similar. After one freeze-thaw cycle, both groups still had comparable values. At the end of their respective incubation time periods, however, there was a significant difference in the mean values of the assessed parameters between the two groups (p < 0.01). An additional freeze-thaw cycle further exacerbated those differences, with group B undergoing an even more substantial decline (p < 0.001). Our data suggest that thawed human spermatozoa sustain a significant decline in sperm parameters in association with longer incubation time, which is further exacerbated by an additional freeze-thaw cycle.
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Affiliation(s)
- Benjamin Zaghi
- The New York State/American Program, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Institute for the Study of Fertility, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Shimi Barda
- Institute for the Study of Fertility, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Israel Academic College in Ramat Gan, Israel.
| | - Sandra Edith Kleiman
- Institute for the Study of Fertility, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ron Hauser
- Institute for the Study of Fertility, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Affiliated to the Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
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11
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Le MT, Nguyen TTT, Nguyen TT, Nguyen VT, Nguyen TTA, Nguyen VQH, Cao NT. Cryopreservation of human spermatozoa by vitrification versus conventional rapid freezing: Effects on motility, viability, morphology and cellular defects. Eur J Obstet Gynecol Reprod Biol 2019; 234:14-20. [PMID: 30640121 DOI: 10.1016/j.ejogrb.2019.01.001] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2018] [Revised: 11/09/2018] [Accepted: 01/01/2019] [Indexed: 11/19/2022]
Abstract
OBJECTIVES Sperm cryopreservation has great potential for male infertility treatment as used in assisted reproduction technology (ART). There are a variety of cryopreservation methods in order to preserve sperm in a long term. Although conventional freezing and vitrification now are used widely, they have damage on sperm parameters as well as sperm DNA integrity. It is necessary to answer which method is better and appropriate for sperm cryopreservation. The aim of this study was to compare the effect of conventional freezing and vitrification regarding to motility, vitality and morphology of sperm found in washed and unwashed samples. STUDY DESIGN One hundred and five human fresh semen samples were divided into washed and unwashed halves using density-gradient centrifugation. Each group then was split into two aliquots: one cryopreserved by conventional freezing and the other by vitrification, using SpermFreeze Solution™ (Vitrolife, Västra Frölunda, Sweden) containing glycerol as a cryoprotectant. The sperm parameters were analyzed and compared between six groups: washed fresh (FW), unwashed fresh (FU), washed conventional freezing (CfW), unwashed conventional freezing (CfU), washed vitrification (VitW) and unwashed vitrification (VitU) samples. RESULTS Sperm progressive motility, vitality and normal morphology significantly decreased, together with an appreciable increase in sperm head, midpiece and tail defects when comparing to the fresh sperm parameters after thawing in all groups. In conventional freezing method groups, progressive motility and vitality were substantially higher than that in vitrification method groups. However, vitrification gave better results in normal morphology rates. Additionally, sperm head, midpiece and tail defects were significant lower in two vitrification groups in comparison with conventional freezing groups. Interestingly, washed groups had better sperm parameters than unwashed groups so that washing process before frozen seemed to improve sperm parameters. CONCLUSION Conventional freezing method resulted in better motility, viability in both washed/unwashed groups. On the contrary, spermatozoa undergoing vitrification were healthier regarding morphology with less defects than conventional freezing. Sperm washing before frozen was a beneficial preparation to sperm cryopreservation.
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Affiliation(s)
- Minh Tam Le
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam; Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam.
| | - Thi Thai Thanh Nguyen
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam; Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Thanh Tung Nguyen
- Department of Histology and Embryology, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Van Trung Nguyen
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam; Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Thi Tam An Nguyen
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam; Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Vu Quoc Huy Nguyen
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
| | - Ngoc Thanh Cao
- Department of OBGYN, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam; Center for Reproductive Endocrinology and Infertility, Hue University of Medicine and Pharmacy, Hue University, 06 Ngo Quyen Street, Hue, Viet Nam
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12
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Hosseini A, Khalili MA, Talebi AR, Agha-Rahimi A, Ghasemi-Esmailabad S, Woodward B, Yari N. Cryopreservation of Low Number of Human Spermatozoa; Which is Better: Vapor Phase or Direct Submerging in Liquid Nitrogen? HUM FERTIL 2018; 22:126-132. [DOI: 10.1080/14647273.2018.1456681] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Akram Hosseini
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Mohammad Ali Khalili
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Ali Reza Talebi
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Azam Agha-Rahimi
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Saeed Ghasemi-Esmailabad
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | | | - Nahid Yari
- Research and Clinical Center for Infertility, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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13
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Sperm preparation after freezing improves motile sperm count, motility, and viability in frozen-thawed sperm compared with sperm preparation before freezing-thawing process. J Assist Reprod Genet 2017; 35:237-245. [PMID: 28990130 DOI: 10.1007/s10815-017-1050-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/15/2017] [Indexed: 10/18/2022] Open
Abstract
PURPOSE The aim of this study is to evaluate which cryopreservation protocol, freezing before or after swim-up, optimizes cryopreservation outcomes in terms of motile sperm count, motility, morphology, and viability, and also to establish whether sperm viability could be assessed based on sperm motility. METHODS Fifty-three fresh and 53 swim-up prepared samples were considered for the first experiment. In parallel, total motility evaluation by CASA system (computer-assisted sperm analyzer) and hypoosmotic swelling test (HOS-test) was performed in each sample to compare the viability results of both methods. In the second experiment, 21 normozoospermic semen samples and 20 semen samples from male factor patients were included. After fresh ejaculate evaluation, the semen sample of each patient was divided into two aliquots, one of them was frozen before swim-up and the other was frozen after swim-up. Motility, sperm count, morphology, and viability were evaluated after thawing. RESULTS A linear regression model allows prediction of HOS-test viability results based on total motility: HOS = 1.38 + 0.97 · TM (R 2 = 99.10, residual mean squares = 9.51). Freezing before sperm selection leads to higher total and progressive motility, total motile sperm count, and viability rates than when sperm selection is performed before freezing (P < 0.005 in all cases). In fact, sperm selection prior to freezing reaches critical values when subfertile patients are considered. CONCLUSIONS To conclude, total motility evaluation can predict HOS-test viability results, resulting in a more objective and less time-consuming method to assess viability. In addition, sperm freezing prior to swim-up selection must be considered in order to achieve better outcomes after thawing, especially in patients presenting poor sperm baseline.
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14
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Palomar Rios A, Molina Botella I. Sperm parameters that play a major role in the assessment of semen quality after cryopreservation. J Assist Reprod Genet 2017. [PMID: 28624858 DOI: 10.1007/s10815-017-0973-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Affiliation(s)
- A Palomar Rios
- Hospital Universitari i Politècnic La Fe, Assisted Reproduction Unit, 46026, Valencia, Spain.
| | - I Molina Botella
- Hospital Universitari i Politècnic La Fe, Assisted Reproduction Unit, 46026, Valencia, Spain
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15
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The effect of Tribulus terrestris extract on motility and viability of human sperms after cryopreservation. Cryobiology 2017; 75:154-159. [DOI: 10.1016/j.cryobiol.2017.02.005] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2016] [Revised: 02/10/2017] [Accepted: 02/12/2017] [Indexed: 02/03/2023]
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16
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Fontoura P, Mello MD, Gallo-Sá P, Erthal-Martins MC, Cardoso MCA, Ramos C. Leptin Improves Sperm Cryopreservation via Antioxidant Defense. J Reprod Infertil 2017; 18:172-178. [PMID: 28377896 PMCID: PMC5359854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Leptin and its receptor are present in spermatozoa; however, the role of leptin in sperm function is still controversial. Our present study aimed at demonstrating the effect of cryopreservation on sperm DNA fragmentation (DNAf) and investigating the possible effects of sperm capacitation techniques and leptin in vitro incubation on frozen-thawed sperm DNAf and oxidative stress. METHODS Samples of 45 normospermic men attending for infertility investigation at Vida Centro de Fertilidade, Rio de Janeiro, Brazil, were frozen and thawed with or without capacitation and leptin incubation prior to freezing. Sperm DNA fragmentation was evaluated by Sperm Chromatin Dispersion Assay before and after cryopreservation and oxidative stress parameters were measured by spectrophotometry with and without leptin incubation. Statistical analysis was performed using paired t test to compare DNAf between groups before and after freeze-thaw cycle, to compare groups before and after capacitation and leptin incubation and oxidative measurements before and after leptin incubation. Statistical significance was considered when p≤0.05. RESULTS Our results revealed a significant post-thaw rise in sperm DNAf compared with fresh samples (p=0.0003). Sperm DNAf was significantly reduced when sperm capacitation was performed before freezing, when compared to those frozen with no previous capacitation (p=0.01). The addition of leptin to capacitated sperm before freezing reduced DNAf (p<0.0001) and enhanced superoxide dismutase (p=0.001) and glutathione peroxidase (p=0.02) antioxidant enzymes activity. CONCLUSION The addition of leptin to capacitated sperm can improve sperm DNA quality following cryopreservation, possibly by inducing the activity of certain antioxidant enzymes.
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Affiliation(s)
- Paula Fontoura
- University Hospital Pedro Ernesto, State University of Rio de Janeiro, Rio de Janeiro, Brazil
| | | | - Paulo Gallo-Sá
- Vida Centro de Fertilildade da Rede D’Or Clinic, Rio de Janeiro, Brazil
| | | | | | - Cristiane Ramos
- University Hospital Pedro Ernesto, State University of Rio de Janeiro, Rio de Janeiro, Brazil,Corresponding Author: Cristiane da Fonte Ramos, University Hospital Pedro Ernesto, State University of Rio de Janeiro, Street 28 de setembro, 77 -Vila Isabel, Rio de Janeiro, RJ, Brazil, Zip Code: 20551-030, E-mail:;
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17
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Massie I, Spaniol K, Geerling G, Schrader S. Cryopreservation and hypothermic storage of lacrimal gland: towards enabling delivery of regenerative medicine therapies for treatment of dry eye syndrome. J Tissue Eng Regen Med 2016; 11:3373-3384. [DOI: 10.1002/term.2251] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 06/08/2016] [Accepted: 07/03/2016] [Indexed: 12/13/2022]
Affiliation(s)
- I. Massie
- Labor für Experimentelle Ophthalmologie; Universitätsklinikum Düsseldorf, Life Science Center; Düsseldorf Germany
| | - K. Spaniol
- Augenklinik, Universitätsklinikum Düsseldorf; Düsseldorf Germany
| | - G. Geerling
- Augenklinik, Universitätsklinikum Düsseldorf; Düsseldorf Germany
| | - S. Schrader
- Augenklinik, Universitätsklinikum Düsseldorf; Düsseldorf Germany
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18
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Khaleghi S, Bakhtiari M, Asadmobini A, Esmaeili F. Tribulus terrestris Extract Improves Human Sperm Parameters In Vitro. J Evid Based Complementary Altern Med 2016; 22:407-412. [PMID: 27694560 PMCID: PMC5871152 DOI: 10.1177/2156587216668110] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Objective. The object of present study was to investigate the effects of direct addition of Tribulus terrestris extract on human sperm parameters. Design. Semen specimens from 40 healthy men volunteers were divided into 4 groups: one group received no treatment (control group) while the others were incubated with 20, 40, and 50 µg/mL of T terrestris extract (experimental groups). Motility, viability, and DNA fragmentation were assessed in all groups. Results. The incubation of human semen with 40 and 50 μg/mL of T terrestris extract significantly enhanced total sperm motility, number of progressive motile spermatozoa, and curvilinear velocity over 60 to 120 minutes’ holding time (P < .05 or P < < .01). Furthermore, viability was significantly enhanced by using T terrestris extract (P < .01). Conclusions. In vitro addition of the T terrestris extract to human sperm could affect male fertility capacity.
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Affiliation(s)
- Sara Khaleghi
- 1 Medical Biology Research Center, Kermanshah University of medical sciences, Kermanshah, Iran
| | - Mitra Bakhtiari
- 1 Medical Biology Research Center, Kermanshah University of medical sciences, Kermanshah, Iran.,2 Fertility & Infertility Research Center, Kermanshah University of Medical Sciences, Sorkheh Lizheh, Kermanshah, Iran
| | - Atefeh Asadmobini
- 1 Medical Biology Research Center, Kermanshah University of medical sciences, Kermanshah, Iran
| | - Farzane Esmaeili
- 1 Medical Biology Research Center, Kermanshah University of medical sciences, Kermanshah, Iran
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19
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Evaluation of the Efficiency of Two Different Freezing Media and Two Different Protocols to Preserve Human Spermatozoa from Cryoinjury. Int J Reprod Med 2016; 2016:6059757. [PMID: 27529078 PMCID: PMC4977390 DOI: 10.1155/2016/6059757] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 06/21/2016] [Indexed: 11/18/2022] Open
Abstract
It is universally recognized that cryopreservation impairs sperm quality. In order to improve postthawing sperm survival and motility, media of different composition and different protocols have been proposed. However, no clear evidence is available to understand which are the most efficient protocol and medium for sperm cryopreservation. The present study evaluates the efficiency of two different cryopreservation protocols and two common freezing media (FM) containing different cryoprotectants (CPs), TEST Yolk Buffer (TYB) and Sperm Freeze (SF), to preserve human sperm quality. Our data suggest that TYB is better than SF both in terms of postthaw viability and in terms of progressive motility, while the direct addition of FM to the sperm sample resulted in the most efficient protocol in terms of postthaw viability but not in terms of progressive motility.
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20
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Peña FJ, Plaza Davila M, Ball BA, Squires EL, Martin Muñoz P, Ortega Ferrusola C, Balao da Silva C. The Impact of Reproductive Technologies on Stallion Mitochondrial Function. Reprod Domest Anim 2015; 50:529-37. [PMID: 26031351 DOI: 10.1111/rda.12551] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Accepted: 05/09/2015] [Indexed: 12/11/2022]
Abstract
The traditional assessment of stallion sperm comprises evaluation of sperm motility and membrane integrity and identification of abnormal morphology of the spermatozoa. More recently, the progressive introduction of flow cytometry is increasing the number of tests available. However, compared with other sperm structures and functions, the evaluation of mitochondria has received less attention in stallion andrology. Recent research indicates that sperm mitochondria are key structures in sperm function suffering major changes during biotechnological procedures such as cryopreservation. In this paper, mitochondrial structure and function will be reviewed in the stallion, when possible specific stallion studies will be discussed, and general findings on mammalian mitochondrial function will be argued when relevant. Especial emphasis will be put on their role as source of reactive oxygen species and in their role regulating sperm lifespan, a possible target to investigate with the aim to improve the quality of frozen-thawed stallion sperm. Later on, the impact of current sperm technologies, principally cryopreservation, on mitochondrial function will be discussed pointing out novel areas of research interest with high potential to improve current sperm technologies.
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Affiliation(s)
- F J Peña
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain.,Gluck Equine Research Center, University of Kentucky, Lexington, KY, USA
| | - M Plaza Davila
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - B A Ball
- Gluck Equine Research Center, University of Kentucky, Lexington, KY, USA
| | - E L Squires
- Gluck Equine Research Center, University of Kentucky, Lexington, KY, USA
| | - P Martin Muñoz
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - C Ortega Ferrusola
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
| | - C Balao da Silva
- Laboratory of Equine Reproduction and Equine Spermatology, Veterinary Teaching Hospital, University of Extremadura, Cáceres, Spain
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