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Zhu XZ, Xiong ZP, Zhou SP, Xie SD, Li HJ, Li QS, Yang GB. Analysis of reproductive damage in earthworms (Amynthas corticis) exposed to cypermethrin. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 244:114038. [PMID: 36075120 DOI: 10.1016/j.ecoenv.2022.114038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 08/25/2022] [Accepted: 08/27/2022] [Indexed: 06/15/2023]
Abstract
Cypermethrin contamination was a potential threat to soil organisms. In the present work, reproductive damage in earthworms (Amynthas corticis) exposed to cypermethrin was investigated. It was found that earthworms could absorb and accumulate residual cypermethrin in soil, and also earthworm activities helped accelerate the degradation of cypermethrin in soil. The accumulation of cypermethrin in earthworms induced sperm damage, and cypermethrin not only caused the imbalance of calcium homeostasis in earthworm sperm cells by inhibiting earthworm sperm Ca2+-ATP and Ca2+-Mg2+-ATP enzyme activities but also caused barriers in acrosome reaction. It also affected sperm energy supply of earthworms by inhibiting the activity of Na+-K+-ATPase and Mg2+-ATPase of earthworm sperm. Meanwhile, the inhibition of acrosome enzyme activity of earthworm sperm by cypermethrin led to hinder fertilization and reduced cocoon production of earthworms, and the damage of cypermethrin to sperm of earthworm was a significant cause of its reproductive toxicity. The results of the evaluation of IBR index showed that reproductive toxicity of cypermethrin to earthworms reduced with the increasing time. The decreased reproductive toxicity of cypermethrin to earthworms at the later stage of exposure (42-56 d) might be due to a combination of reduced absorption of cypermethrin in soil by earthworms, decreased accumulation of cypermethrin in the body, and improved sperm capacitation.
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Affiliation(s)
- X Z Zhu
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China
| | - Z P Xiong
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China
| | - S P Zhou
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China.
| | - S D Xie
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China
| | - H J Li
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China
| | - Q S Li
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China
| | - G B Yang
- Key Laboratory of State Forestry Administration on Highly-Efficient Utilization of Forestry Biomass Resources in Southwest China ( Southwest Forestry University), Kunming 650224, China
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Contreras MJ, Arias ME, Silva M, Cabrera P, Felmer R. Effect of cholestanol and cholesterol-loaded cyclodextrin on stallion sperm function and capacitation post-cryopreservation. Theriogenology 2022; 189:1-10. [PMID: 35714521 DOI: 10.1016/j.theriogenology.2022.06.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 05/06/2022] [Accepted: 06/06/2022] [Indexed: 10/18/2022]
Abstract
Cryopreservation of stallion semen is less efficient than other species such as bovine. This is mainly because of the greater susceptibility of stallion sperm to the freezing damage that generates oxidative stress and plasma membrane injury, resulting in DNA fragmentation and cell death. These data suggest the need to develop new strategies of sperm cryopreservation that can improve the efficiency of this technique in stallions by reducing or preventing membrane damage and cell death. The present study aimed to evaluate the effect of adding membrane stabilizers to the freezing medium and assess the quality and in vitro capacitation of stallion sperm after thawing. Semen samples from three stallions frozen with membrane stabilizers (cholesterol-loaded cyclodextrin and cholestanol-loaded cyclodextrin) were evaluated in two experiments: i) sperm quality and functional analysis after thawing, and ii) sperm quality and functional analysis after 4 h of post-thaw incubation in capacitating conditions. Plasma membrane integrity, mitochondrial membrane potential, membrane lipid disorder, intracellular Ca2+, tyrosine phosphorylation, acrosome reaction, DNA damage, sperm motility, and binding to the zona pellucida were assessed. The results showed that cholesterol-loaded cyclodextrin was the stabilizer that most efficiently reduced the membrane disruption and post-thaw cell damage. In addition, this stabilizer made it possible to obtain in vitro capacitated sperm showing higher plasma membrane integrity, mitochondrial membrane potential, sperm motility, binding to the zona pellucida and better response to in vitro capacitating conditions.
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Affiliation(s)
- María José Contreras
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile; Doctoral Program in Applied Cell and Molecular Biology, Universidad de La Frontera, Temuco, Chile
| | - María Elena Arias
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Agricultural Production, Faculty of Agriculture and Forestry Sciences, Universidad de La Frontera, Temuco, Chile
| | - Mauricio Silva
- Department of Veterinary Sciences and Public Health, Universidad Catolica de Temuco, Temuco, Chile
| | - Paulina Cabrera
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile; Doctoral Program in Applied Cell and Molecular Biology, Universidad de La Frontera, Temuco, Chile
| | - Ricardo Felmer
- Laboratory of Reproduction, Centre of Reproductive Biotechnology (CEBIOR-BIOREN), Universidad de La Frontera, Temuco, Chile; Department of Agricultural Sciences and Natural Resources, Faculty of Agriculture and Forestry Sciences, Universidad de La Frontera, Temuco, Chile.
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Küçük N, Uçan U, Raza S, Erdoğan G, Aksoy M. Comparative efficiency of novel laparoscopic and routine vaginal inseminations with cryopreserved semen in rabbits. Reprod Domest Anim 2021; 56:1059-1065. [PMID: 33966306 DOI: 10.1111/rda.13949] [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: 04/05/2021] [Accepted: 05/05/2021] [Indexed: 12/14/2022]
Abstract
Laparoscopic artificial insemination technique (LAI) is described to overcome reduced fertility problems in sheep artificial insemination (AI) programmes with frozen semen. Later on, this technology was modified for endangered non-domestic cats to deposit low quality or reduced number of sperm cells hardly obtained by electro-ejaculation into the oviduct. This technique by passes the complex structure of cervix and efficiently transfers the sperm cells to the point of fertilization. In recent years, rabbits are becoming popular transgenic animal models producing various therapeutic and commercial products, as well as being experimental animals for disease models. The worldwide transportation of frozen semen and re-establishment of transgenic lines using AI technology has become a common practice. Therefore, this study was designed to describe a laparoscopic intrauterine insemination technique, which might assist in conceiving the animals with limited number of sperm cells. The female rabbits were laparoscopically (n = 22) or vaginally (n = 13) inseminated with frozen-thawed semen samples containing approximately 10 × 106 motile sperm. The laparoscopic insemination technique provided higher pregnancy rate (45.5%) than vaginal insemination technique (7.7%) (p < .05). In conclusion, the described laparoscopic AI might be a new alternative technique, thus enabling limited or low-quality frozen sperm samples to establish pregnancy in rabbits.
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Affiliation(s)
- Niyazi Küçük
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey
| | - Uğur Uçan
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey
| | - Sanan Raza
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey.,Department of Animal Reproduction, University of Veterinary & Animal Sciences, Lahore, Pakistan
| | - Güneş Erdoğan
- Faculty of Veterinary Medicine, Department of Veterinary Obstetrics and Gynecology, University of Aydın Adnan Menderes, Aydın, Turkey
| | - Melih Aksoy
- Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, University of Aydın Adnan Menderes, Aydın, Turkey
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Hezavehei M, Sharafi M, Fathi R, Shahverdi A, Gilani MAS. Membrane lipid replacement with nano-micelles in human sperm cryopreservation improves post-thaw function and acrosome protein integrity. Reprod Biomed Online 2021; 43:257-268. [PMID: 34256996 DOI: 10.1016/j.rbmo.2021.05.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 04/27/2021] [Accepted: 05/01/2021] [Indexed: 12/27/2022]
Abstract
RESEARCH QUESTION Membrane lipid replacement (MLR) of oxidized membrane lipids can restore sperm cellular membrane functionality and help improve surface protein stability during cryopreservation. What are the effects of MLR with nano-micelles made from a glycerophospholipid (GPL) mixture and cholesterol-loaded cyclodextrin (CLC), on the cryosurvival and expression of acrosome-related proteins in thawed human spermatozoa? DESIGN Twenty samples were used to determine the optimum level of nano-micelles by incubation of semen with different concentrations of GPL (0.1 and 1%) and CLC (1 and 2 mg/ml) (including GPL-0.1, GPL-1, CLC-1, CLC-2, CLC-1/GPL-0.1, CLC-2/GPL-0.1, CLC-1/GPL-1 and CLC-2/GPL-1) before cryopreservation. Then, 30 semen samples were collected, and each sample was divided into the following three aliquots: fresh, frozen control and frozen incubated with optimum level of nano-micelles (0.1% GPL and 1 mg/ml CLC). RESULTS CLC-1/GPL-0.1 and GPL-0.1 significantly increased motility parameters. CLC-1, GPL-0.1 and CLC-1/GPL-0.1 significantly improved viability rate compared with frozen control group. Significantly higher mitochondrial activity and acrosome integrity, and a lower rate of apoptosis, were observed in the CLC-1/GPL-0.1 compared with the frozen control group. The expression ratios of arylsulfatase A (ARSA), serine protease 37 (PRSS37), serine protease inhibitor Kazal-type 2 (SPINK2) and equatorin (EQTN) significantly increased compared with the frozen control group. CONCLUSIONS Modification of membrane cholesterol and GPL mixtures in spermatozoa enhances their acrosome protein integrity by inhibiting early apoptotic changes and spontaneous acrosome reactions.
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Affiliation(s)
- Maryam Hezavehei
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Banihashem St Tehran 16635-148, Iran
| | - Mohsen Sharafi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Banihashem St Tehran 16635-148, Iran; Department of Animal Science, College of Agriculture, Tarbiat Modarres University
| | - Rohoullah Fathi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Banihashem St Tehran 16635-148, Iran
| | - Abdolhossein Shahverdi
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Banihashem St Tehran 16635-148, Iran.
| | - Mohammad Ali Sadighi Gilani
- Department of Embryology, Reproductive Biomedicine Research Center, Royan Institute for Reproductive Biomedicine, ACECR, Banihashem St Tehran 16635-148, Iran.
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Nishijima K, Kitajima S, Matsuhisa F, Niimi M, Wang CC, Fan J. Strategies for Highly Efficient Rabbit Sperm Cryopreservation. Animals (Basel) 2021; 11:ani11051220. [PMID: 33922622 PMCID: PMC8145333 DOI: 10.3390/ani11051220] [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: 03/15/2021] [Revised: 04/20/2021] [Accepted: 04/21/2021] [Indexed: 12/28/2022] Open
Abstract
The rabbit is a valuable animal for both the economy and biomedical sciences. Sperm cryopreservation is one of the most efficient ways to preserve rabbit strains because it is easy to collect ejaculate repeatedly from a single male and inseminate artificially into multiple females. During the cooling, freezing and thawing process of sperms, the plasma membrane, cytoplasm and genome structures could be damaged by osmotic stress, cold shock, intracellular ice crystal formation, and excessive production of reactive oxygen species. In this review, we will discuss the progress made during the past years regarding efforts to minimize the cell damage in rabbit sperms, including freezing extender, cryoprotectants, supplements, and procedures.
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Affiliation(s)
- Kazutoshi Nishijima
- Center for Animal Resources and Collaborative Study, National Institutes of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki 444-8585, Japan
- National Institute for Physiological Sciences, National Institutes of Natural Sciences, 38 Nishigonaka, Myodaiji, Okazaki 444-8585, Japan
- Department of Physiological Sciences, SOKENDAI (The Graduate University for Advanced Studies), Aichi, Okazaki 444-8585, Japan
- Correspondence: (K.N.); (J.F.); Tel.: +81-564-557781 (K.N.); +81-55-2739519 (J.F.)
| | - Shuji Kitajima
- Analytical Research Center for Experimental Sciences, Division of Biological Resources and Development, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan; (S.K.); (F.M.)
| | - Fumikazu Matsuhisa
- Analytical Research Center for Experimental Sciences, Division of Biological Resources and Development, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan; (S.K.); (F.M.)
| | - Manabu Niimi
- Department of Molecular Pathology, Faculty of Medicine, Interdisciplinary Graduate School of Medical Sciences, University of Yamanashi, 1110 Shimokato, Chuo 409-3898, Japan;
| | - Chen-chi Wang
- Animal Resources Section, Okinawa Institute of Science and Technology Graduate University, 1919-1 Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan;
| | - Jianglin Fan
- Department of Molecular Pathology, Faculty of Medicine, Interdisciplinary Graduate School of Medical Sciences, University of Yamanashi, 1110 Shimokato, Chuo 409-3898, Japan;
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
- Correspondence: (K.N.); (J.F.); Tel.: +81-564-557781 (K.N.); +81-55-2739519 (J.F.)
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Raza S, Uçan U, Aksoy M, Erdoğan G, Ceylan A, Serin I. Silk protein sericin pretreatment enhances osmotic tolerance and post-thaw sperm quality but reduces the ability of sperm cells to undergo in vitro induced acrosome reaction in rabbit. Cryobiology 2019; 90:1-7. [PMID: 31541621 DOI: 10.1016/j.cryobiol.2019.09.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 01/17/2023]
Abstract
Effect of sericin pretreatment of sperm cells on the osmotic tolerance, ability to undergo acrosome reaction induced by calcium ionophore (CI), heparin (H) or lysophosphatidylcholine (LPC), post-thaw sperm quality and in vivo fertility was evaluated in four successive experiments in rabbit. In experiment 1, fresh semen was pretreated with sericin (0, 0.1% or 0.5% w/v) before exposing to fructose solutions adjusted to either 50, 100, 290, 500 or 1000 mOsm/L. Sericin pretreatment increased sperm livability in addition to live-membrane intact and total membrane intact sperm rates (P < 0.05) in 50 and 290 mOsm/L groups. In experiment 2, sperm samples were pretreated by either 0.1 or 0.5% sericin after removal of the semen plasma. CI, H or LPC were used to induce acrosome reaction in pretreated sperm samples. Sericin pretreatment, reduced the ability of sperm cells to undergo acrosome reaction (P < 0.05) in vitro. In experiment 3, ejaculates were frozen with or without sericin pretreatment in DMSO-sucrose extender. In post-thaw samples sericin pretreatment improved total and progressive motility, livability, membrane and acrosome integrity in a dose dependent manner (P < 0.05). In vivo fertility trials by artificial inseminations revealed contradictory results in experiment 4. Although 0.5% sericin pretreatment totally inhibited fertility, 0.1% sericin provided high pregnancy rates. In conclusion; sericin pretreatment enhances osmotic tolerance and post-thaw sperm quality, but reduces the ability of rabbit sperm cells to undergo in vitro induced acrosome reaction, but this effect is restored in vivo by dose dependent manner.
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Affiliation(s)
- Sanan Raza
- Department of Animal Reproduction, University of Veterinary & Animal Sciences, 35200, Jhang Campus, Pakistan; Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, University of Aydin Adnan Menderes, 09016, Aydin, Turkey.
| | - Uğur Uçan
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, University of Aydin Adnan Menderes, 09016, Aydin, Turkey.
| | - Melih Aksoy
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, University of Aydin Adnan Menderes, 09016, Aydin, Turkey.
| | - Güneş Erdoğan
- Department of Veterinary Obstetrics and Gynecology, Faculty of Veterinary Medicine, University of Aydin Adnan Menderes, 09016, Aydin, Turkey.
| | - Ahmet Ceylan
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, University of Aydin Adnan Menderes, 09016, Aydin, Turkey.
| | - Ilker Serin
- Department of Reproduction and Artificial Insemination, Faculty of Veterinary Medicine, University of Aydin Adnan Menderes, 09016, Aydin, Turkey.
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Cyclodextrin-membrane interaction in drug delivery and membrane structure maintenance. Int J Pharm 2019; 564:59-76. [DOI: 10.1016/j.ijpharm.2019.03.063] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 03/28/2019] [Accepted: 03/29/2019] [Indexed: 01/14/2023]
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Bai C, Kang N, Zhao J, Dai J, Gao H, Chen Y, Dong H, Huang C, Dong Q. Cryopreservation disrupts lipid rafts and heat shock proteins in yellow catfish sperm. Cryobiology 2019; 87:32-39. [PMID: 30876909 DOI: 10.1016/j.cryobiol.2019.03.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/06/2019] [Accepted: 03/08/2019] [Indexed: 11/25/2022]
Abstract
Lipid rafts and associated membrane proteins (flotillin, caveolin) play important roles in cell signaling and sperm fertilization while heat shock proteins (Hsp) ensure properly protein folding to fulfill their physiological functions. The markedly reduced fertility in thawed sperm after cryopreservation could result from disrupted membrane lipid rafts and these proteins. To explore the effect of sperm cryopreservation on lipid rafts and heat shock proteins, we compared lipid raft integrity, and the expression levels of lipid raft associated proteins (Flot-1, Flot-2, Cav-1) as well as heat shock proteins (Hsp90, Hsp70) in fresh and thawed sperm cryopreserved under different scenarios in yellow catfish. We found higher lipid raft integrity, higher protein expression levels of Flot-1, Flot-2, Cav-1, Hsp90, and Hsp70 in fresh sperm samples than in thawed sperm samples, in thawed sperm samples cryopreserved with optimal cooling rate than those cryopreserved with sub-optimal cooling rate, and in thawed sperm samples cryopreserved with extenders supplemented with cholesterol than those supplemented with methyl-β-cyclodextrin (for cholesterol removal). Our findings indicate that lipid raft integrity, and expression levels of Flot-1, Flot-2, Cav-1, Hsp90, and Hsp70 are clearly associated with sperm quality, and together they may play a cumulative role in reduced fertility associated with thawed sperm in aquatic species.
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Affiliation(s)
- Chenglian Bai
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Ning Kang
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Junping Zhao
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Jun Dai
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Hui Gao
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Yuanhong Chen
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Haojia Dong
- Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Changjiang Huang
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China
| | - Qiaoxiang Dong
- The Second Affiliated Hospital and Yuying Children's Hospital, Wenzhou Medical University, Wenzhou 325035, PR China; Institute of Environmental Safety and Human Health, Wenzhou Medical University, Wenzhou 325035, PR China.
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Inanc ME, Tekin K, Olgac KT, Yilmaz B, Cil B, Tasdemir U, Tuncer PB, Buyukleblebici S, Durmaz E, Uysal O. Effect of cholesterol loaded cyclodextrin on semen cryopreservation of Aksaray Malakli shepherd dogs of different ages. Anim Reprod Sci 2018; 193:191-200. [PMID: 29699920 DOI: 10.1016/j.anireprosci.2018.04.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/28/2018] [Accepted: 04/13/2018] [Indexed: 11/29/2022]
Abstract
The objective of the study was to determine the effect of cholesterol-loaded cyclodextrin (CLC) on the quality parameters of semen from Aksaray Malakli Shepherd dogs of different age groups. Forty-eight male dogs were divided into 3 groupings according to their ages (young age (Y): ≤3 years, n: 20; middle age (M): 4-6 years, n: 20; old age (O): ≥7 years; n: 8). The sperm-rich portion of the ejaculate from each dog was divided into four aliquots and extended with either tris as a control (C) or tris loaded with 0.5, 1.0, and 1.5 mg/120 × 106 CLC as low (L), intermediate (I), and high (H) doses, respectively. Following equilibration for at least half an hour, the straws were frozen in nitrogen vapor and then stored in liquid nitrogen at least for 48 h. Later, the frozen straws were thawed in a water bath for spermatological evaluation. Significant differences were observed between different age groups in terms of the spermatological parameters (p < 0.05). The evidence suggests that increasing age is associated with poor in-vitro spermatological parameters and CLC was able to protect the acrosome integrity from cryo-damage during the freeze-thawing process. Better semen freezability characteristics were obtained at young ages, considering the overall parameters.
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Affiliation(s)
- Muhammed Enes Inanc
- Mehmet Akif Ersoy University, Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Burdur, Turkey.
| | - Koray Tekin
- Ankara University, Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Ankara, Turkey
| | - Kemal Tuna Olgac
- Ankara University, Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Ankara, Turkey
| | - Burak Yilmaz
- Ankara University, Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Ankara, Turkey
| | - Beste Cil
- Ankara University, Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Ankara, Turkey
| | - Umut Tasdemir
- Aksaray University, Technical Sciences Vocational School, Aksaray, Turkey
| | | | | | - Emre Durmaz
- Gazi University Faculty of Pharmacy, Department of Toxicology, Ankara, Turkey
| | - Ongun Uysal
- Ankara University, Faculty of Veterinary Medicine, Department of Reproduction and Artificial Insemination, Ankara, Turkey
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10
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Lone SA. Possible mechanisms of cholesterol-loaded cyclodextrin action on sperm during cryopreservation. Anim Reprod Sci 2018; 192:1-5. [PMID: 29559192 DOI: 10.1016/j.anireprosci.2018.03.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2018] [Revised: 02/28/2018] [Accepted: 03/06/2018] [Indexed: 11/30/2022]
Abstract
Artificial insemination (AI) with cryopreserved semen has a pivotal role in wider dissemination of germplasm of elite livestock and also for conservation of various endangered species. Cryopreservation allows storage of semen for a prolonged period of time and facilitates greater exchange of genetic material among distant populations. Cryopreservation, however, leads to certain deleterious effects on sperm including premature induction of the acrosome reaction, reduced sperm motility and viability, and impaired sperm DNA integrity and fertility. During cooling procedures, membrane phase transitions take place, which result in micro-domain formation from aggregation of lipids, leading to impaired functions of the sperm membrane, and gap formation between gel and fluid domains. Cyclodextrins are produced by enzymatic degradation of starch and possess a unique feature, that when added alone to sperm cyclodextrins facilitate the removal of cholesterol from the membrane. When preloaded with cholesterol, however, cyclodextrins stimulate the insertion of cholesterol into the sperm membrane due to presence of a hydrophobic core in addition to an outer hydrophilic face. Treating sperm of various species with cholesterol-loaded cyclodextrin improves the quality of sperm during cryopreservation. It is still not clearly known how cholesterol-loaded cyclodextrin functions at sperm cells to enhance the survival during cryopreservation. The present review, therefore, highlights possible mechanisms of cholesterol-loaded cyclodextrin action on sperm during cryopreservation.
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Affiliation(s)
- Shabir Ahmad Lone
- Artificial Breeding Research Center (ABRC), Animal Reproduction, Gynaecology and Obstetrics, ICAR-National Dairy Research Institute, Karnal, Haryana, 132001, India.
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11
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Salmon VM, Castonguay F, Demers-Caron V, Leclerc P, Bailey JL. Cholesterol-loaded cyclodextrin improves ram sperm cryoresistance in skim milk-extender. Anim Reprod Sci 2016; 177:1-11. [PMID: 28017451 DOI: 10.1016/j.anireprosci.2016.11.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Revised: 10/17/2016] [Accepted: 11/22/2016] [Indexed: 10/20/2022]
Abstract
Cholesterol-loaded cyclodextrin (CLC) is known to improve ram sperm cryosurvival. This study expands on previous research to: (1) determine the mechanism by which CLC improves ram sperm cryosurvival and (2) compare the efficiency of a novel, skim milk-based extender containing CLC to a traditional egg yolk-based extender. Hypothesis #1 was that CLC enhances membrane cholesterol content to increase the resistance of ram sperm to cold and osmotic stress, thereby improving cryosurvival. We first assessed the ability of fresh sperm treated with CLC to withstand cold shock. Second, fresh sperm were treated with CLC to evaluate their tolerance to osmotic stress. Third, to confirm that cholesterol is incorporated into the sperm using CLC, we quantified sperm cholesterol. To test Hypothesis #2 that CLC is most effective in a medium without competing cholesterol, we compared sperm cryosurvival and fertility in skim milk-based extender containing CLC versus in a traditional egg yolk-based freezing extender without CLC. Our data confirmed that CLC treatment improves ram sperm cold shock and osmotic stress resistance, and augments sperm cholesterol content. Semen in skim milk-based extender containing CLC prior to freezing, had more motile sperm with intact acrosomes after thawing compared to semen in egg yolk-based extender. In contrast, sperm plasma membrane integrity and in vivo fertility of the semen cryopreserved in the skim milk-based extender with CLC did not differ from semen that was cryopreserved in egg yolk-based extender. Further research is warranted to combine CLC with other cryoprotection strategies or to modify the insemination protocol.
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Affiliation(s)
- Vianney M Salmon
- Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Département des Sciences Animales, Université Laval, Québec, QC G1V 0A6, Canada
| | - François Castonguay
- Département des Sciences Animales, Université Laval, Québec, QC G1V 0A6, Canada
| | | | - Pierre Leclerc
- Département d'obstétrique, Gynécologie et Reproduction, Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Santé de la mère et de l'enfant, Centre de Recherche du CHU de Québec, QC G1V 4G2, Canada
| | - Janice L Bailey
- Centre de Recherche en Reproduction, Développement et Santé Intergénérationnelle, Département des Sciences Animales, Université Laval, Québec, QC G1V 0A6, Canada.
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12
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Uçan U, Küçük N, Ahmad E, Naseer Z, Aksoy M, Serin İ, Ceylan A. Effect of different sugars supplemented to the extender in combination with cholesterol-loaded cyclodextrin (CLC) on post-thaw quality of ram spermatozoa. Small Rumin Res 2016. [DOI: 10.1016/j.smallrumres.2016.01.021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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13
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Aksu EH, Akman O, Ömür AD, Karakuş E, Can İ, Kandemir FM, Dorman E, Uçar Ö. 3,3 diindolylmethane leads to apoptosis, decreases sperm quality, affects blood estradiol 17 β and testosterone, oestrogen (α and β) and androgen receptor levels in the reproductive system in male rats. Andrologia 2016; 48:1155-1165. [DOI: 10.1111/and.12554] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2015] [Indexed: 12/27/2022] Open
Affiliation(s)
- E. H. Aksu
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| | - O. Akman
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| | - A. D. Ömür
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
| | - E. Karakuş
- Faculty of Veterinary Medicine; Department of Pharmacology; Atatürk University; Erzurum Turkey
| | - İ. Can
- Faculty of Medicine; Department of Histology; Kafkas University; Kars Turkey
| | - F. M. Kandemir
- Faculty of Veterinary Medicine; Department of Biochemistry; Atatürk University; Erzurum Turkey
| | - E. Dorman
- Faculty of Medicine; Biochemistry Laboratories; Atatürk University; Erzurum Turkey
| | - Ö. Uçar
- Faculty of Veterinary Medicine; Department of Reproduction and Artificial Insemination; Atatürk University; Erzurum Turkey
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Salmon VM, Leclerc P, Bailey JL. Cholesterol-Loaded Cyclodextrin Increases the Cholesterol Content of Goat Sperm to Improve Cold and Osmotic Resistance and Maintain Sperm Function after Cryopreservation. Biol Reprod 2016; 94:85. [PMID: 26888968 DOI: 10.1095/biolreprod.115.128553] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 01/28/2016] [Indexed: 11/01/2022] Open
Abstract
The success of semen cryopreservation depends on sperm membrane integrity and function after thawing. Cholesterol-loaded cyclodextrin (CLC) is used for in vitro incorporation of cholesterol to protect cells against cold temperatures. We hypothesized that CLC treatment also enhances sperm cholesterol content to increase tolerance to osmotic shock and cryoresistance, thereby improving fertility. We confirmed the fact that treatment of goat semen with 3 mg/ml CLC increases sperm cholesterol content using both the Liebermann-Burchard approach and filipin III labeling of membrane cholesterol. Sperm were then treated with or without CLC and cryopreserved. After thawing, sperm cholesterol dramatically fell, even in the presence of CLC, which explains the mechanism of cryocapacitation. CLC treatment, however, maintained a normal prefreeze cholesterol level in sperm after cryopreservation. Furthermore, fresh sperm treated with CLC and subjected to either cold shock or incubated in hypo-, iso-, and hyperosmotic media, designed to mimic stresses associated with freezing/thawing, displayed increased temperature and osmotic tolerance. CLC treatment also improved sperm viability, motility, and acrosome integrity after thawing. Furthermore, CLC treatment did not affect the sperm's ability to undergo in vitro capacitation according to chlortetracycline fluorescence and protein tyrosine phosphorylation. A pilot field trial demonstrated that artificial insemination with sperm that underwent increased cholesterol levels following CLC treatment yielded higher fertility ( ITALIC! P< 0.1) and proliferation ( ITALIC! P< 0.05) rates in vivo than untreated semen from the same ejaculate samples. These observations suggest that CLC treatment could be used to improve cryoprotection during the freezing and thawing of goat sperm.
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Affiliation(s)
- Vianney M Salmon
- Centre de Recherche en Biologie de la Reproduction Département des Sciences Animales, Université Laval, Québec, Québec, Canada
| | - Pierre Leclerc
- Département d'Obstétrique et de Gynécologie, Centre de recherche en biologie de la reproduction, Université Laval, Axe reproduction, santé périnatale et santé de l'enfant, Centre de recherche du CHUQ-CHUL, Québec, Québec, Canada
| | - Janice L Bailey
- Centre de Recherche en Biologie de la Reproduction Département des Sciences Animales, Université Laval, Québec, Québec, Canada
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Behera S, Harshan HM, Bhai KL, Ghosh KNA. Effect of cholesterol supplementation on cryosurvival of goat spermatozoa. Vet World 2015; 8:1386-91. [PMID: 27047048 PMCID: PMC4774814 DOI: 10.14202/vetworld.2015.1386-1391] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Revised: 10/24/2015] [Accepted: 10/31/2015] [Indexed: 12/02/2022] Open
Abstract
Aim: Sperm membrane cholesterol influences cryodamage during cryopreservation. The present study was carried out to evaluate the effect of varying cholesterol levels in Tris based extenders on the freezability of sexually healthy Malabari buck semen. Materials and Methods: A total of 48 ejaculates from two adults healthy sexually healthy Malabari bucks were utilized for the study. The collected and pooled ejaculates were divided into four groups with Group I serving as Control - I, Group II and III were treated with 1 mg and 2 mg of cholesterol-loaded-cyclodextrin (CLC)/120 × 106 spermatozoa, respectively, and Group IV, treated with 1 mg methyl-β-cyclodextrin (MβCD) served as Control - II. Manual freezing was carried out to cryopreserve the treated and control spermatozoa. Results: Treatment of semen samples with CLC resulted in improved maintenance of sperm motility at pre-freeze and post-thaw stages of cryopreservation without affecting hypo-osmotic swelling response. Treatment of semen with 1 mg of CLC/120 × 106 spermatozoa was observed to be better than treatment with 2 mg of CLC/120 × 106 spermatozoa. In general, MβCD treatment was found to result in significantly lower sperm characteristics than those of Control - I and CLC treatment at pre-feeze and post-thaw stages and when incubated up to 4 h. Conclusion: Cholesterol treatment of sexually healthy Malabari buck semen was found to hold promise for improving cryopreservability of spermatozoa.
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Affiliation(s)
- Sunita Behera
- Department of Veterinary Gynaecology and Obstetrics, Veterinary College, Bengaluru, Karnataka, India
| | - Hiron M Harshan
- Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, Kerala Veterinary and Animal Sciences University, Pookode, Kerala, India
| | - K Lekshmi Bhai
- Department of Animal Reproduction Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, Kerala Veterinary and Animal Sciences University, Pookode, Kerala, India
| | - K N Aravinda Ghosh
- Department of Animal Reproduction, Gynaecology and Obstetrics, College of Veterinary and Animal Sciences, Kerala Veterinary and Animal Sciences University, Mannuthy, Kerala, India
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Blommaert D, Franck T, Donnay I, Lejeune JP, Detilleux J, Serteyn D. Substitution of egg yolk by a cyclodextrin-cholesterol complex allows a reduction of the glycerol concentration into the freezing medium of equine sperm. Cryobiology 2015; 72:27-32. [PMID: 26687387 DOI: 10.1016/j.cryobiol.2015.11.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 10/08/2015] [Accepted: 11/27/2015] [Indexed: 11/27/2022]
Abstract
The aim of this work was to completely replace the egg yolk a classical diluent for freezing equine semen by a cyclodextrin-cholesterol complex. At the same time, the reduction in the glycerol content used for cryopreservation and the incubation time between sperm and the freezing media were evaluated. Horse ejaculates were frozen with four different freezing extenders: a frozen reference medium (IF) containing egg yolk and 2.5% glycerol and media without egg yolk but supplemented with 1.5 mg 2-hydroxypropyl-beta-cyclodextrin cholesterol (HPβCD-C) complex and containing either 1% (G1), 2% (G2) or 3% glycerol (G3). Three incubation times (90, 120 and 180 min) at 4 °C between the fresh semen and the different media were tested before freezing. Viability and motility analyses were performed with computer assisted semen analysis (CASA). Results showed that the freezing media containing the HPβCD-C complex with 1%, 2% and 3% glycerol significantly improve the 3 in vitro parameters of post thawing semen quality (viability, progressive and total mobilities) compared to IF. The best improvement of the parameters was obtained with G1 medium and the longest contact time. The substitution of egg yolk by HPβCD-C complex allows the decrease of protein charge of the medium while favouring the cholesterol supply to membrane spermatozoa offering it a better resistance to osmotic imbalance and a better tolerance to the glycerol toxicity. Our results highlight that the egg yolk of an extender for the freezing of horse semen can be completely substituted by HPβCD-C complex.
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Affiliation(s)
| | - Thierry Franck
- Center for Oxygen Research and Development (CORD), University of Liège, Liège, Belgium
| | - Isabelle Donnay
- Institut des Sciences de la Vie, Université catholique de Louvain, Louvain-la-Neuve, Belgium
| | | | - Johann Detilleux
- Department of Quantitative Genetics, Faculty of Veterinary Medicine, University of Liège, Liège, Belgium
| | - Didier Serteyn
- LINALUX-MLS, Centre Européen du Cheval, Vielsalm, Belgium; Center for Oxygen Research and Development (CORD), University of Liège, Liège, Belgium; Equine Clinic, Veterinary Medicine Faculty, University of Liège, Liège, Belgium
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Protective effect of cholesterol-loaded cyclodextrin pretreatment against hydrogen peroxide induced oxidative damage in ram sperm. Cryobiology 2015; 71:18-23. [DOI: 10.1016/j.cryobiol.2015.06.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 05/28/2015] [Accepted: 06/18/2015] [Indexed: 11/20/2022]
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18
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Holt WV, Del Valle I, Fazeli A. Heat shock protein A8 stabilizes the bull sperm plasma membrane during cryopreservation: Effects of breed, protein concentration, and mode of use. Theriogenology 2015; 84:693-701. [PMID: 26047707 DOI: 10.1016/j.theriogenology.2015.05.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2015] [Revised: 05/03/2015] [Accepted: 05/03/2015] [Indexed: 12/13/2022]
Abstract
Heat shock protein A8 (HSPA8) is a highly conserved member of the Hsp70 family, which is expressed in oviductal cells, translocated into oviductal fluid, and becomes attached to the sperm surface during sperm transport. Previous research has shown that HSPA8 supports mammalian sperm viability during in vitro incubation at both 5 °C and body temperature. The present series of experiments was designed to explore the possibility that bovine recombinant HSPA8 might therefore protect bull spermatozoa during cryopreservation through its beneficial effects on the sperm plasma membrane. Soy-based cryopreservation media were used in these experiments. The effects of HSPA8 addition before freezing were examined at concentrations ranging from 0.2 to 6.4 μg/mL, whereas the effects of postthaw HSPA8 addition were tested between 0.2 and 12.8 μg/mL. When bull spermatozoa (from beef and dairy breeds) were frozen in the presence of HSPA8, beneficial but complex effects on postthaw viability were observed. Low HSPA8 concentrations (0.2 and 0.4 μg/mL) resulted in significantly reduced postthaw sperm viability, but concentrations above 0.8 μg/mL improved plasma membrane integrity. If HSPA8 was added to spermatozoa after thawing, outcomes were also biphasic and beneficial effects on viability were only seen if the HSPA8 concentration exceeded 3.2 μg/mL. Beneficial effects were significantly more apparent with beef rather than dairy breeds. When HSPA8 was used in combination with cholesterol-loaded cyclodextrin, spermatozoa from the beef breeds showed significantly lower apoptotic effects. This was not observed with the dairy breeds.
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Affiliation(s)
- W V Holt
- Department of Human Metabolism, Academic Unit of Reproductive and Developmental Medicine, Sheffield, UK.
| | - I Del Valle
- Department of Human Metabolism, Academic Unit of Reproductive and Developmental Medicine, Sheffield, UK
| | - A Fazeli
- Department of Human Metabolism, Academic Unit of Reproductive and Developmental Medicine, Sheffield, UK
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Cholesterol addition aids the cryopreservation of dromedary camel (Camelus dromedarius) spermatozoa. Theriogenology 2015; 83:168-74. [DOI: 10.1016/j.theriogenology.2014.09.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2014] [Revised: 09/03/2014] [Accepted: 09/08/2014] [Indexed: 11/21/2022]
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20
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Nishijima K, Yamaguchi S, Tanaka M, Sakai Y, Koshimoto C, Morimoto M, Watanabe T, Fan J, Kitajima S. Effects of cholesterol-loaded cyclodextrins on the rate and the quality of motility in frozen and thawed rabbit sperm. Exp Anim 2014; 63:149-54. [PMID: 24770640 PMCID: PMC4160988 DOI: 10.1538/expanim.63.149] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The motility of sperm after freezing and thawing is critical for effective
cryopreservation. It is known that supplementation with cholesterol-loaded cyclodextrin
(CLC) improves cryosurvival of sperm in various animals. To clarify the effects of
supplementation with CLC on rabbit sperm motility after freezing and thawing, rabbit sperm
motility was analyzed using a computer-assisted sperm analysis system. Sperm motility with
CLC supplementation was 29.4 ± 9.6% (mean ± SD), which was significantly higher than that
of controls (20.8 ± 7.1%, P<0.05). The curvilinear velocity of sperm
with CLC exceeded that of controls, whereas the values for linearity and wobble were
significantly lower in sperm with CLC compared with controls. After artificial
insemination, 44.3% of recovered ova were fertilized in the CLC-supplemented group, which
was higher than the percentage in the control group (36.4%). The results indicate that
supplementation with CLC improves the rate and quality of motility in rabbit sperm after
freezing and thawing, and would be advantageous for successful cryopreservation.
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Affiliation(s)
- Kazutoshi Nishijima
- Division of Biological Resources and Development, Analytical Research Center for Experimental Sciences, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan
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21
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Ahmad E, Naseer Z, Aksoy M, Küçük N, Uçan U, Serin İ, Ceylan A. Trehalose enhances osmotic tolerance and suppresses lysophosphatidylcholine-induced acrosome reaction in ram spermatozoon. Andrologia 2014; 47:786-92. [DOI: 10.1111/and.12329] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/25/2014] [Indexed: 11/30/2022] Open
Affiliation(s)
- E. Ahmad
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
| | - Z. Naseer
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
| | - M. Aksoy
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
| | - N. Küçük
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
| | - U. Uçan
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
| | - İ. Serin
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
| | - A. Ceylan
- Department of Reproduction and Artificial Insemination; Faculty of Veterinary Medicine; Adnan Menderes University; Aydin Turkey
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22
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Cholesterol-loaded cyclodextrin pretreatment of ram spermatozoa protects structural integrity of plasma membrane during osmotic challenge and reduces their ability to undergo acrosome reaction in vitro. Small Rumin Res 2013. [DOI: 10.1016/j.smallrumres.2013.09.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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23
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Kiso WK, Asano A, Travis AJ, Schmitt DL, Brown JL, Pukazhenthi BS. Pretreatment of Asian elephant (Elephas maximus) spermatozoa with cholesterol-loaded cyclodextrins and glycerol addition at 4°C improves cryosurvival. Reprod Fertil Dev 2013; 24:1134-42. [PMID: 22954260 DOI: 10.1071/rd11266] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2011] [Accepted: 04/04/2012] [Indexed: 11/23/2022] Open
Abstract
Asian elephant spermatozoa are sensitive to chilling and do not respond well to cryopreservation. The objectives of the present study were to: (1) determine whether cholesterol content can be modified by preincubation of Asian elephant spermatozoa with cholesterol-loaded cyclodextrin (CLC); and (2) assess the effects of CLC concentration(s), temperature at time of glycerol addition (22°C vs 4°C) and dilution medium on post-thaw sperm survival. Spermatozoa incubated with ≥1.5 mg CLC exhibited increased (P < 0.05) cholesterol concentrations. Pretreatment of spermatozoa with 1.5 mg CLC resulted in improvements (P < 0.05) in all post-thaw parameters. Glycerol addition at 4°C also improved all post-thaw parameters compared with 22°C. Dilution of thawed spermatozoa in an egg yolk-based medium improved (P < 0.05) motility compared with Ham's F-10 culture medium. In summary, our findings indicate that modifying cholesterol content within the plasma membrane improves the cryosurvival of Asian elephant spermatozoa. The development of an improved cryopreservation method that includes modification of membrane cholesterol and the addition of glycerol at 4°C, as reported in the present study, is an important step towards utilisation of cryopreserved spermatozoa in captive management of this species.
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Affiliation(s)
- Wendy K Kiso
- Center for Species Survival, Smithsonian Conservation Biology Institute, National Zoological Park, Washington, DC 20008, USA.
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Tapia JA, Macias-Garcia B, Miro-Moran A, Ortega-Ferrusola C, Salido GM, Peña FJ, Aparicio IM. The Membrane of the Mammalian Spermatozoa: Much More Than an Inert Envelope. Reprod Domest Anim 2012; 47 Suppl 3:65-75. [DOI: 10.1111/j.1439-0531.2012.02046.x] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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25
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Leahy T, Gadella BM. Sperm surface changes and physiological consequences induced by sperm handling and storage. Reproduction 2011; 142:759-78. [DOI: 10.1530/rep-11-0310] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Spermatozoa interact with their immediate environment and this contact remodels the sperm surface in preparation for fertilisation. These fundamental membrane changes will be critically covered in this review with special emphasis on the very specific surface destabilisation event, capacitation. This process involves very subtle and intricate modifications of the sperm membrane including removal of suppression (decapacitation) factors and changes in the lateral organisation of the proteins and lipids of the sperm surface. Processing of sperm for assisted reproduction (storage, sex-sorting, etc.) subjects spermatozoa to numerous stressors, and it is possible that this processing overrides such delicate processes resulting in sperm instability and cell damage. To improve sperm quality, novel mechanisms must be used to stabilise the sperm surface during handling. In this review, different types of membrane stress are considered, as well as novel surface manipulation methods to improve sperm stability.
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Treating boar sperm with cholesterol-loaded cyclodextrins widens the sperm osmotic tolerance limits and enhances the in vitro sperm fertilising ability. Anim Reprod Sci 2011; 129:209-20. [DOI: 10.1016/j.anireprosci.2011.12.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 11/24/2011] [Accepted: 12/03/2011] [Indexed: 11/21/2022]
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27
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Cholesterol-loaded cyclodextrin inhibits premature acrosomal reactions in liquid-stored rabbit spermatozoa. Anim Reprod Sci 2011; 123:106-11. [DOI: 10.1016/j.anireprosci.2010.10.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Revised: 10/11/2010] [Accepted: 10/25/2010] [Indexed: 11/22/2022]
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