1
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Evaluation of sperm fertilization capacity of large Japanese field mice (Apodemus speciosus) exposed to chronic low dose-rate radiation after the Fukushima accident. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2022. [DOI: 10.1016/j.jrras.2022.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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2
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Superior effect of broccoli methanolic extract on control of oxidative damage of sperm cryopreservation and reproductive performance in rats: A comparison with vitamin C and E antioxidant. Theriogenology 2022; 181:50-58. [DOI: 10.1016/j.theriogenology.2022.01.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 12/31/2021] [Accepted: 01/08/2022] [Indexed: 12/17/2022]
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3
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Abe Y, Asano T, Wakasa I, Kume A, Yokozawa S, Umemiya-Shirafuji R, Suzuki H. Cryopreservation of canine spermatozoa using a skim milk-based extender and a short equilibration time. Reprod Domest Anim 2020; 55:1548-1553. [PMID: 32799370 DOI: 10.1111/rda.13806] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Accepted: 08/12/2020] [Indexed: 11/26/2022]
Abstract
Although useful spermatozoa cryopreservation techniques have been established, long-term equilibration seems to be required before freezing the spermatozoa of many species, including dogs. The fertility of cryopreserved dog spermatozoa from five males for a reduced equilibration period (0, 30, 60, 120 and 180 min) in a skim milk (SM)-based extender containing raffinose was evaluated in the present study. When the sperm was diluted with the extender at room temperature (RT) and cryopreserved without equilibration, the proportion of total motile spermatozoa (TMS) after thawing was lower (27%) than when the sperm was equilibrated for 30 min (33%), 60 min (32%), 120 min (44%; p < .05) or 180 min (29%). The proportion of TMS increased as the equilibration time increased and peaked at 120 min. Acrosome integrity was significantly lower in the cryopreserved spermatozoa that had not undergone the initial equilibration than in the equilibrated spermatozoa (p < .05). The normal rate of acrosomes increased with the extension of the first equilibration and peaked at 120 min. When frozen-thawed spermatozoa that had been diluted at RT and subjected to an initial equilibration lasting 60 or 180 min were transcervically inseminated into recipients, there were no differences in the delivery rate, litter size or breeding efficiency. In the cryopreservation of canine spermatozoa using a SM-based extender, even if the initial equilibration time was shortened to 60 min, the results were comparable to those obtained when the conventional method (with an initial equilibration time of 180 min) was used.
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Affiliation(s)
- Yasuyuki Abe
- Life Environment Subject, Department of Living Thing Resources Science, Prefectural University of Hiroshima, Shobara, Japan
| | - Tomoyoshi Asano
- Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Ichiko Wakasa
- Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Aiko Kume
- Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Sakimi Yokozawa
- Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Rika Umemiya-Shirafuji
- Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.,Global Agro-Medicine Research Center, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Hiroshi Suzuki
- Research Unit for Functional Genomics, National Research Center for Protozoan Diseases, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.,Global Agro-Medicine Research Center, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.,Department of Basic Veterinary Science, The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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4
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Nakagata N, Mikoda N, Nakao S, Nakatsukasa E, Takeo T. Establishment of sperm cryopreservation and in vitro fertilisation protocols for rats. Sci Rep 2020; 10:93. [PMID: 31919412 PMCID: PMC6952447 DOI: 10.1038/s41598-019-57090-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 12/20/2019] [Indexed: 11/10/2022] Open
Abstract
Recently, genome-editing tools have come into common use in the field of rat research, and consequently, many genetically modified rat strains have been preserved and archived as frozen embryos. Although there have been many reports published on the topic of rat sperm cryopreservation, no report has yet provided satisfactory and acceptable protocols for the cryopreservation of rat sperm. In this study, we developed methods for both the cryopreservation of transgenic rat sperm and in vitro fertilisation using frozen sperm, which yielded high fertilisation rates.
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Affiliation(s)
- Naomi Nakagata
- Center for Animal Resources and Development, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan.
| | - Nobuyuki Mikoda
- Center for Animal Resources and Development, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan
| | - Satohiro Nakao
- Center for Animal Resources and Development, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan
| | - Ena Nakatsukasa
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachidori, Chuo-ku, Niigata, 951-8585, Japan
| | - Toru Takeo
- Center for Animal Resources and Development, Kumamoto University, 2-2-1 Honjo, Chuo-ku, Kumamoto, 860-0811, Japan
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5
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Liu X, Baloch Z, Wang G, Xue S, Huang Q, Yang S. High efficient and non-invasive collection of ejaculates from rats using penile vibratory stimulation. Theriogenology 2018; 106:192-197. [PMID: 29080477 DOI: 10.1016/j.theriogenology.2017.10.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Revised: 10/15/2017] [Accepted: 10/16/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND The rat is one of the most important experimental animals, which plays an indispensable role in biomedical research, particularly in reproduction. However, according to our best knowledge, there is no easy and efficient method available for semen collection from rats. RESULTS In this study, we successfully collected semen through penile vibratory stimulation ejaculation (PVSE) from laboratory rats. This is an easier and more efficient method compared with rectal probe electro-ejaculation (RPE). We found that the ejaculation rate, volume, concentration and motility of semen collected with PVSE were substantially better than those of RPE. Although PVSE was time-consuming compared to RPE, the quality of semen was better; additionally, sperm concentration and motility of semen were significantly higher with a two-day interval between collections compared to a five-day interval. Moreover, we found that electrical stimulation, use of anesthesia and increased age of rats have a negative effect on sperm quality. In the last experiment, four fertile female rats were artificially inseminated with PVSE-collected semen, and healthy offspring were born. CONCLUSION Here, for the first time, we established the repeated collection of semen using the PVSE method in rats.
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Affiliation(s)
- Xiaoxing Liu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases of Guangdong Province, South China Agricultural University, Guangzhou 510642, PR China
| | - Zulqarain Baloch
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases of Guangdong Province, South China Agricultural University, Guangzhou 510642, PR China
| | - Ge Wang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases of Guangdong Province, South China Agricultural University, Guangzhou 510642, PR China
| | - Senren Xue
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases of Guangdong Province, South China Agricultural University, Guangzhou 510642, PR China
| | - Qunshang Huang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases of Guangdong Province, South China Agricultural University, Guangzhou 510642, PR China
| | - Shihua Yang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, PR China; Key Laboratory of Comprehensive Prevention and Control for Severe Clinical Animal Diseases of Guangdong Province, South China Agricultural University, Guangzhou 510642, PR China.
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6
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Abe Y, Yokozawa S, Umemiya-Shirafuji R, Moumouni P, Suwa Y, Suzuki H. Fertilizing ability of canine spermatozoa cryopreserved with skim milk-based extender in a retrospective study. Reprod Domest Anim 2017; 53:237-242. [PMID: 29110350 DOI: 10.1111/rda.13098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 09/19/2017] [Indexed: 12/18/2022]
Abstract
We previously reported that skim milk (SM) is an effective cryoprotectant for cryopreservation of canine spermatozoa instead of egg yolk (EY), which is the conventional cryoprotectant. In this study, the fertilizing ability and practical use of frozen canine spermatozoa prepared with SM were evaluated by transcervical insemination. Frozen-thawed spermatozoa were inseminated one to four times on days 2-9 after the LH surge. In SM group, a single transcervical insemination (TCI) on Day 5 led to higher delivery rate (83%) than any other days (33%-50%) post-LH surge. In EY group, delivery rate in double TCI on days 5 and 6 (71%) was higher compared to any other experimental groups (0%-44%). Regardless of single or double, TCI on Day 5 or Day 6 led to higher litter sizes in SM or EY groups, respectively. The breeding efficiency and litter size of single TCI on Day 5 (4.2) and double TCI on Day 5 and Day 6 (3.7) were significantly higher than in the other experimental groups in SM and EY groups, respectively (p < .05). These findings suggest that skim milk is a suitable alternative to egg yolk for cryopreservation of canine spermatozoa, and the suitable timing for insemination might be on Day 5 post-LH surge.
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Affiliation(s)
- Y Abe
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - S Yokozawa
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - R Umemiya-Shirafuji
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.,Global Agro-Medicine Research Center, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Pfa Moumouni
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan
| | - Y Suwa
- Hokkaido Guide Dog Association, Sapporo, Japan
| | - H Suzuki
- Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.,Global Agro-Medicine Research Center, Obihiro University of Agriculture and Veterinary Medicine, Obihiro, Japan.,Department of Basic Veterinary Science, The United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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7
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Ribeiro DC, Chagas J, Bashiyo-Silva C, Costa RS, Veríssimo-Silveira R, Ninhaus-Silveira A. Oocyte viability and cortical activation under different salt solutions in Prochilodus lineatus (Teleostei: Prochilodontidae). Reprod Domest Anim 2017; 52:932-938. [PMID: 28556240 DOI: 10.1111/rda.12997] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 04/07/2017] [Indexed: 11/30/2022]
Abstract
This study aimed to evaluate the effect of five salt solutions in the maintenance of morphological features of cortical alveolus, hydration and fertilization capacity of Prochilodus lineatus oocytes. For this purpose, five saline solutions were tested: Ringer's solution, Ringer's lactate solution, Hank's balanced salt solution (HBSS), Hank's balanced salt solution without calcium (HBSS without calcium) and solution for salmonid eggs. Oocytes were maintained for 2 hr in saline solution with controlled temperature subsequently evaluated for hydration, cortical activation and fertilization ability. In the evaluation of the fertilization ability, two controls were used: C1-fertilized oocytes after extrusion-and C2-oocytes kept in ovarian fluid and fertilized after 2 hr. There was a significant reduction in the viability of oocytes C2 (28.8% ± 12.9%) compared to C1 (65.3% ± 26.7%), and no significant differences were found between treatments HBSS and HBSS without calcium and C2. Only HBSS and HBSS without calcium maintained the non-activated state of the gametes, with a fertilization rate of 16.4% ± 6.7% and 5.6% ± 2.3%, respectively; however, they did not extend the viability of oocytes, such that they continued to undergo degradation during the storage period, similar to oocytes retained only in ovarian fluid.
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Affiliation(s)
- D C Ribeiro
- Institute of Biosciences, Humanities and Exact Sciences (Ibilce), São Paulo State University (Unesp), São Paulo, Brazil
| | - Jma Chagas
- Institute of Biosciences (IBB), São Paulo State University (Unesp), São Paulo, Brazil
| | - C Bashiyo-Silva
- Institute of Biosciences (IBB), São Paulo State University (Unesp), São Paulo, Brazil.,Faculty of Engineering of Ilha Solteira (FEIS), São Paulo State University (Unesp), São Paulo, Brazil
| | - R S Costa
- Institute of Biosciences, Humanities and Exact Sciences (Ibilce), São Paulo State University (Unesp), São Paulo, Brazil.,Faculty of Engineering of Ilha Solteira (FEIS), São Paulo State University (Unesp), São Paulo, Brazil
| | - R Veríssimo-Silveira
- Institute of Biosciences (IBB), São Paulo State University (Unesp), São Paulo, Brazil.,Faculty of Engineering of Ilha Solteira (FEIS), São Paulo State University (Unesp), São Paulo, Brazil
| | - A Ninhaus-Silveira
- Institute of Biosciences (IBB), São Paulo State University (Unesp), São Paulo, Brazil.,Faculty of Engineering of Ilha Solteira (FEIS), São Paulo State University (Unesp), São Paulo, Brazil
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8
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Kim S, Hooper S, Agca C, Agca Y. Post-thaw ATP supplementation enhances cryoprotective effect of iodixanol in rat spermatozoa. Reprod Biol Endocrinol 2016; 14:5. [PMID: 26821719 PMCID: PMC4731941 DOI: 10.1186/s12958-016-0141-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 01/22/2016] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Successful cryopreservation of rat spermatozoa from various strains still remains a challenge. The objective of this study was to determine if combinations of OptiPrep™ (iodixanol) and adenosine 5'-triphosphate (ATP) can improve rat sperm function during the cryopreservation procedure. METHODS Epididymal rat spermatozoa were frozen under different OptiPrep™ concentrations (0, 1, 2, 3 or 4 %) and were diluted with media supplemented with or without 2 mM ATP after thawing. Post-thaw sperm motility, acrosomal membrane integrity (AMI) and mitochondrial membrane potential (MMP) were then evaluated. In addition, the effect of different OptiPrep™ concentrations on fresh and cooled rat spermatozoa was tested via motility. RESULTS There was no effect of OptiPrep™ on motility of fresh and cooled spermatozoa. The supplementation of 1 and 2 % OptiPrep™ increased motility of frozen spermatozoa at 10 min after thawing, while it did not improve motility of spermatozoa at 3 h after thawing in the absence of ATP. During incubation of thawed spermatozoa, the ATP addition protected time-dependent decrease in motility after thawing in OptiPrep™-treated samples. OptiPrep™ had no effect on AMI and MMP in frozen-thawed spermatozoa but combinations of OptiPrep™ and ATP improved MMP in frozen-thawed spermatozoa. CONCLUSIONS Iodixanol has cryoprotective effects during rat sperm freezing without any toxic effect. Moreover, the combinations of iodixanol and ATP have a beneficial role in maintaining function of frozen-thawed rat spermatozoa for long period of incubation post-thaw.
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Affiliation(s)
- Suhee Kim
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri-Columbia, 1600 East Rollins Street, Room W191, Columbia, MO, 65211, USA
| | - Sarah Hooper
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri-Columbia, 1600 East Rollins Street, Room W191, Columbia, MO, 65211, USA
| | - Cansu Agca
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri-Columbia, 1600 East Rollins Street, Room W191, Columbia, MO, 65211, USA
| | - Yuksel Agca
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri-Columbia, 1600 East Rollins Street, Room W191, Columbia, MO, 65211, USA.
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9
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Yamashiro H, Abe Y, Fukuda T, Kino Y, Kawaguchi I, Kuwahara Y, Fukumoto M, Takahashi S, Suzuki M, Kobayashi J, Uematsu E, Tong B, Yamada T, Yoshida S, Sato E, Shinoda H, Sekine T, Isogai E, Fukumoto M. Effects of radioactive caesium on bull testes after the Fukushima nuclear plant accident. Sci Rep 2013; 3:2850. [PMID: 24100305 PMCID: PMC3792411 DOI: 10.1038/srep02850] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2013] [Accepted: 09/04/2013] [Indexed: 11/18/2022] Open
Abstract
We aimed to investigate the effect of chronic radiation exposure associated with the Fukushima Daiichi Nuclear Plant accident on the testis from 2 bulls. Estimated dose of internal exposure in one bull was 0.7-1.2 mGy (¹³⁴Cs) and 0.4-0.6 mGy (¹³⁷Cs) and external exposure was 2.0 mGy (¹³⁴Cs) and 0.8 mGy (¹³⁷Cs) (196 days). Internal dose in the other was 3.2-6.1 mGy (¹³⁴Cs) and 1.8-3.4 mGy (¹³⁷Cs) and external dose was 1.3 mGy (¹³⁴Cs) and 0.6 mGy (¹³⁷Cs) (315 days). Sperm morphology and spermatogenesis were within normal ranges. ¹³⁴,¹³⁷Cs radioactivity was detected but Cs was not detectable in the testis by electron probe microanalysis. Thus, adverse radiation-induced effects were not observed in bull testes following chronic exposure to the above levels of radiation for up to 10 months. Since we could analyse a limited number of testes, further investigation on the effects of ionizing radiation on spermatogenesis should be extended to more animals.
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Affiliation(s)
| | - Yasuyuki Abe
- Graduate School of Science and Engineering, Yamagata University, Yamagata, Japan
| | - Tomokazu Fukuda
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Yasushi Kino
- Department of Chemistry, Tohoku University, Sendai, Japan
| | - Isao Kawaguchi
- National Institute of Radiological Sciences, Chiba, Japan
| | - Yoshikazu Kuwahara
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Motoi Fukumoto
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Shintaro Takahashi
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Masatoshi Suzuki
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Jin Kobayashi
- School of Food, Agricultural and Environmental Sciences, Miyagi University, Sendai, Japan
| | - Emi Uematsu
- Faculty of Agriculture, Niigata University, Niigata, Japan
| | - Bin Tong
- Faculty of Agriculture, Niigata University, Niigata, Japan
| | | | | | - Eimei Sato
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Hisashi Shinoda
- Graduate School of Dentistry, Tohoku University, Sendai, Japan
| | - Tsutomu Sekine
- Department of Chemistry, Tohoku University, Sendai, Japan
| | - Emiko Isogai
- Graduate School of Agricultural Sciences, Tohoku University, Sendai, Japan
| | - Manabu Fukumoto
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
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10
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Varisli O, Scott H, Agca C, Agca Y. The effects of cooling rates and type of freezing extenders on cryosurvival of rat sperm. Cryobiology 2013; 67:109-16. [PMID: 23727068 PMCID: PMC3772956 DOI: 10.1016/j.cryobiol.2013.05.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Revised: 05/11/2013] [Accepted: 05/13/2013] [Indexed: 11/17/2022]
Abstract
Cryopreservation of rat sperm is very challenging due to its sensitivity to various stress factors. The objective of this study was to determine the optimal cooling rate and extender for epididymal sperm of outbred Sprague Dawley (SD) and inbred Fischer 344 (F344) rat strains. The epididymal sperm from 10 to 12 weeks old sexually mature SD and F344 strains were suspended in five different freezing extenders, namely HEPES buffered Tyrode's lactate (TL-HEPES), modified Kreb's Ringer bicarbonate (mKRB), 3% dehydrated skim milk (SM), Salamon's Tris-citrate (TRIS), and tes/tris (TES). All extenders contained 20% egg yolk, 0.75% Equex Paste and 0.1 M raffinose or 0.1 M sucrose. The sperm samples in each extender were cooled to 4°C and held for 45 min for equilibration before freezing. The equilibrated sperm samples in each extender were placed onto a shallow quartz dish inserted into Linkam Cryostage (BCS 196). The samples were then cooled to a final temperature of -150°C by using various cooling rates (10, 40, 70, and 100°C/min). For thawing, the quartz dish containing the sperm samples were rapidly removed from the Linkam cryo-stage and placed on a 37°C slide warmer and held for 1 min before motility analysis. Sperm membrane and acrosomal integrity and mitochondrial membrane potential (MMP) were assessed by SYBR-14/Propidium iodide, Alexa Fluor-488-PNA conjugate and JC-1, respectively. The total motility, acrosomal integrity, membrane integrity and MMP values were compared among cooling rates and extenders. Both cooling rate and type of extender had significant effect on cryosurvival (P < 0.05). Sperm motility increased as cooling rate was increased for both strains (P < 0.05). Highest cryosurvival was achieved when 100°C/min cooling rate was used in combination with TES extender containing 20% egg yolk, 0.75% Equex paste and either 0.1M sucrose or raffinose (P < 0.05). This study showed that TES extender containing 0.1 M raffinose or sucrose with 70°C/min and 100°C/min cooling rate improved post-thaw motility of rat sperm.
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Affiliation(s)
- Omer Varisli
- University of Harran, Faculty of Veterinary Medicine, Department of Reproduction, and Artificial Insemination, Eyyubiye Campus, Sanliurfa, 63300 Turkey
| | - Hollie Scott
- University of Missouri, College of Veterinary Medicine, Dept. of Veterinary Pathobiology, 1600 East Rollins Street, Columbia, MO 65211
| | - Cansu Agca
- University of Missouri, College of Veterinary Medicine, Dept. of Veterinary Pathobiology, 1600 East Rollins Street, Columbia, MO 65211
| | - Yuksel Agca
- University of Missouri, College of Veterinary Medicine, Dept. of Veterinary Pathobiology, 1600 East Rollins Street, Columbia, MO 65211
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11
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Kaneko K, Uematsu E, Takahashi Y, Tong B, Takino S, Wajiki Y, Kimura T, Yamashiro H, Kaneko Y, Iwaisaki H, Sugiyama T, Yamada T, Yamagishi S. Semen collection and polymerase chain reaction-based sex determination of black-headed and straw-necked ibis. Reprod Domest Anim 2013; 48:1001-5. [PMID: 23808530 DOI: 10.1111/rda.12200] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2013] [Accepted: 05/28/2013] [Indexed: 11/27/2022]
Abstract
This study aimed to develop a polymerase chain reaction (PCR)-based sexing and effective semen collection methods for black-headed and straw-necked ibis species. However, most birds are not sexually dimorphic, that is, the sexes appear similar. Therefore, the gender should be determined before semen collection. DNA was extracted from the blood samples of 11 black-headed and 4 straw-necked ibis. The sex was determined after PCR amplification of the EE0.6 region of W-chromosome. The PCR products were separated using gel electrophoresis. A single band indicated the presence of the EE0.6 region and that the individual was a female, while no band indicated that the individual was a male. Further, the single bands from seven specimens were amplified. Semen collection was performed by massage or a combination of massage with electro-ejaculation and was attempted during all four seasons. The semen was successfully collected in March from male straw-necked ibis using the massage method. Limited motility, viability and concentration of straw-necked ibis sperm were observed. The sperm length was 180 μm and that of the nucleus was 30 μm with acrosome located at the tip of the nucleus. Thus, the PCR-based sexing proved to be an accurate molecular sexing method for black-headed and straw-necked ibis. Furthermore, we successfully collected semen and observed the stained sperm nucleus and acrosome of the straw-necked ibis sperm. We propose that the use of this PCR methodology can be applied as a routine method for sex determination and semen collection in ibis species for future ecological research. However, considering our limited success, further studies on semen collection method are required.
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Affiliation(s)
- K Kaneko
- Faculty of Agriculture, Niigata University, Nishiku, Niigata, Japan
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12
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Keeley T, McGreevy P, O'Brien J. Cryopreservation of epididymal sperm collected postmortem in the Tasmanian devil (Sarcophilus harrisii). Theriogenology 2012; 78:315-25. [DOI: 10.1016/j.theriogenology.2012.02.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2011] [Revised: 01/22/2012] [Accepted: 02/05/2012] [Indexed: 11/29/2022]
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13
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Kim S, Agca C, Agca Y. Changes in rat spermatozoa function after cooling, cryopreservation and centrifugation processes. Cryobiology 2012; 65:215-23. [PMID: 22760031 DOI: 10.1016/j.cryobiol.2012.06.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2012] [Revised: 06/20/2012] [Accepted: 06/22/2012] [Indexed: 10/28/2022]
Abstract
Rat sperm cryopreservation is an effective method of archiving valuable strains for biomedical research and handling of rat spermatozoa is very important for successful cryopreservation. The aim of this study was to evaluate changes in rat sperm function during cryopreservation and centrifugation. Epididymal rat spermatozoa were subjected to cooling and freezing-thawing processes and then motility, plasma membrane integrity (PMI), mitochondrial membrane potential (MMP) and reactive oxygen species (ROS) were compared before and after minimum centrifugation force (200×g). Cryopreservation decreased sperm motility, PMI, and MMP (P<0.05). Basal (without ROS inducer, tert-butyl hydroperoxide [TBHP] treatment) and stimulated ROS (with TBHP treatment) were increased in viable cooled spermatozoa compared to viable fresh spermatozoa (P<0.01), with equal susceptibility to TBHP among fresh, cooled, and frozen-thawed spermatozoa. Centrifugation decreased motility and PMI of frozen-thawed spermatozoa (P<0.05). Centrifugation decreased basal ROS of all spermatozoa (P<0.01), while it led to higher susceptibility to TBHP in viable cooled spermatozoa, showing higher increased fold in ROS and decreased rate in viability by TBHP in viable cooled spermatozoa (P<0.05). Cooling process was the major step of ROS generation, with loss in sperm motility, PMI, and MMP. Centrifugation affected function of cryopreserved spermatozoa. These data suggest that centrifugation makes rat spermatozoa susceptible to external ROS source, in particular during cooling process. Thus, protection from ROS damage and minimizing centrifugation should be considered during cryopreservation and post-thaw use of cryopreserved epididymal rat spermatozoa.
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Affiliation(s)
- Suhee Kim
- Department of Veterinary Pathobiology, College of Veterinary Medicine, University of Missouri-Columbia, Columbia, MO 65211, USA
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KAEOKET K, DONTO S, NUALNOY P, NOIPHINIT J, CHANAPIWAT P. Effect of Gamma-Oryzanol-Enriched Rice Bran Oil on Quality of Cryopreserved Boar Semen. J Vet Med Sci 2012; 74:1149-53. [DOI: 10.1292/jvms.11-0436] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Kampon KAEOKET
- Semen Laboratory, Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Phuttamonthon, Nakorn-pathom 73170, Thailand
| | - Sarayut DONTO
- Semen Laboratory, Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Phuttamonthon, Nakorn-pathom 73170, Thailand
| | - Pinatta NUALNOY
- Semen Laboratory, Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Phuttamonthon, Nakorn-pathom 73170, Thailand
| | - Jutarat NOIPHINIT
- Semen Laboratory, Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Phuttamonthon, Nakorn-pathom 73170, Thailand
| | - Panida CHANAPIWAT
- Semen Laboratory, Department of Clinical Sciences and Public Health, Faculty of Veterinary Science, Mahidol University, Phuttamonthon, Nakorn-pathom 73170, Thailand
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Kaeoket K, Chanapiwat P, Tummaruk P, Techakumphu M. Supplemental effect of varying L-cysteine concentrations on the quality of cryopreserved boar semen. Asian J Androl 2010; 12:760-5. [PMID: 20601963 DOI: 10.1038/aja.2010.48] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Cryopreservation is associated with the production of reactive oxygen species, which leads to lipid peroxidation of the sperm membrane and consequently a reduction in sperm motility and decreased fertility potential. The aim of this study was to determine the optimal concentration of L-cysteine needed for cryopreservation of boar semen. Twelve boars provided semen of proven motility and morphology for this study. The semen was divided into four portions in which the lactose-egg yolk (LEY) extender used to resuspend the centrifuged sperm pellet was supplemented with various concentrations of L-cysteine to reach 0 mmol L(-1) (group I, control), 5 mmol L(-1) (group II), 10 mmol L(-1) (group III) and 15 mmol L(-1) (group IV). Semen suspensions were loaded in straws (0.5 mL) and placed in a controlled-rate freezer. After cryopreservation, frozen semen samples were thawed and investigated for progressive motility, viability using SYBR-14/EthD-1 staining and acrosome integrity using FITC-PNA/EthD-1 staining. There was a significantly higher (P < 0.01) percentage of progressive motility, viability and acrosomal integrity in two L-cysteine-supplemented groups (group II and group III) compared with the control. There was a biphasic effect of L-cysteine, with the highest percentage of progressive motility, viability and acrosomal integrity in group III. In conclusion, 5 or 10 mmol L(-1) was the optimum concentration of L-cysteine to be added to the LEY extender for improving the quality of frozen-thawed boar semen.
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Affiliation(s)
- Kampon Kaeoket
- Semen Laboratory, Faculty of Veterinary Science, Mahidol University, Phuttamonthon, Nakorn-pathom 73170, Thailand.
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Hagiwara M, Choi JH, Devireddy RV, Roberts KP, Wolkers WF, Makhlouf A, Bischof JC. Cellular biophysics during freezing of rat and mouse sperm predicts post-thaw motility. Biol Reprod 2009; 81:700-6. [PMID: 19535788 DOI: 10.1095/biolreprod.109.076075] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
Though cryopreservation of mouse sperm yields good survival and motility after thawing, cryopreservation of rat sperm remains a challenge. This study was designed to evaluate the biophysics (membrane permeability) of rat in comparison to mouse to better understand the cooling rate response that contributes to cryopreservation success or failure in these two sperm types. In order to extract subzero membrane hydraulic permeability in the presence of ice, a differential scanning calorimeter (DSC) method was used. By analyzing rat and mouse sperm frozen at 5 degrees C/min and 20 degrees C/min, heat release signatures characteristic of each sperm type were obtained and correlated to cellular dehydration. The dehydration response was then fit to a model of cellular water transport (dehydration) by adjusting cell-specific biophysical (membrane hydraulic permeability) parameters L(pg) and E(Lp). A "combined fit" (to 5 degrees C/min and 20 degrees C/min data) for rat sperm in Biggers-Whitten-Whittingham media yielded L(pg) = 0.007 microm min(-1) atm(-1) and E(Lp) = 17.8 kcal/mol, and in egg yolk cryopreservation media yielded L(pg) = 0.005 microm min(-1) atm(-1) and E(Lp) = 14.3 kcal/mol. These parameters, especially the activation energy, were found to be lower than previously published parameters for mouse sperm. In addition, the biophysical responses in mouse and rat sperm were shown to depend on the constituents of the cryopreservation media, in particular egg yolk and glycerol. Using these parameters, optimal cooling rates for cryopreservation were predicted for each sperm based on a criteria of 5%-15% normalized cell water at -30 degrees C during freezing in cryopreservation media. These predicted rates range from 53 degrees C/min to 70 degrees C/min and from 28 degrees C/min to 36 degrees C/min in rat and mouse, respectively. These predictions were validated by comparison to experimentally determined cryopreservation outcomes, in this case based on motility. Maximum motility was obtained with freezing rates between 50 degrees C/min and 80 degrees C/min for rat and at 20 degrees C/min with a sharp drop at 50 degrees C/min for mouse. In summary, DSC experiments on mouse and rat sperm yielded a difference in membrane permeability parameters in the two sperm types that, when implemented in a biophysical model of water transport, reasonably predict different optimal cooling rate outcomes for each sperm after cryopreservation.
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Affiliation(s)
- Mie Hagiwara
- Departments of Mechanical Engineering, Biomedical Engineering, Urologic Surgery, and Integrative Biology & Physiology, University of Minnesota, Minneapolis, Minnesota, USA
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Maintenance of fertility in cryopreserved Indian gerbil (Tatera indica) spermatozoa. Cryobiology 2009; 58:303-7. [DOI: 10.1016/j.cryobiol.2009.02.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Accepted: 02/25/2009] [Indexed: 11/21/2022]
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Kaeoket K, Sang-urai P, Thamniyom A, Chanapiwat P, Techakumphu M. Effect of Docosahexaenoic Acid on Quality of Cryopreserved Boar Semen in Different Breeds. Reprod Domest Anim 2008; 45:458-63. [DOI: 10.1111/j.1439-0531.2008.01239.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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