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Alm-Kristiansen AH, Gaustad ER, Bai G, Standerholen FB, Klinkenberg G, Kommisrud E, Waterhouse KE. In vitro studies of Norwegian Red bovine semen immobilized and cryopreserved in alginate solid gel network. Reprod Domest Anim 2017; 53:365-370. [DOI: 10.1111/rda.13115] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 10/30/2017] [Indexed: 11/27/2022]
Affiliation(s)
- AH Alm-Kristiansen
- Department of Natural Sciences and Technology; Inland Norway University of Applied Sciences; Hamar Norway
- SpermVital AS; Hamar Norway
| | | | - G Bai
- SpermVital AS; Hamar Norway
| | - FB Standerholen
- Department of Natural Sciences and Technology; Inland Norway University of Applied Sciences; Hamar Norway
- SpermVital AS; Hamar Norway
| | | | - E Kommisrud
- Department of Natural Sciences and Technology; Inland Norway University of Applied Sciences; Hamar Norway
- SpermVital AS; Hamar Norway
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2
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Alm-Kristiansen AH, Dalen G, Klinkenberg G, Bekk L, Thorkildsen LT, Waterhouse KE, Kommisrud E. Reproductive performance of immobilized cryopreserved bovine semen used for timed artificial insemination. Reprod Domest Anim 2017; 52:1019-1024. [DOI: 10.1111/rda.13017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Accepted: 05/30/2017] [Indexed: 11/30/2022]
Affiliation(s)
- AH Alm-Kristiansen
- Department of Natural Sciences and Technology; Inland Norway University of Applied Sciences; Hamar Norway
- SpermVital AS; Hamar Norway
| | - G Dalen
- Tine SA; Ås Norway
- Norwegian University of Life Sciences; Oslo Norway
| | | | - L Bekk
- SpermVital AS; Hamar Norway
| | | | | | - E Kommisrud
- Department of Natural Sciences and Technology; Inland Norway University of Applied Sciences; Hamar Norway
- SpermVital AS; Hamar Norway
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David A, Day J, Shikanov A. Immunoisolation to prevent tissue graft rejection: Current knowledge and future use. Exp Biol Med (Maywood) 2016; 241:955-61. [PMID: 27188513 DOI: 10.1177/1535370216647129] [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] [Indexed: 11/15/2022] Open
Abstract
This review focuses on the concept of immunoisolation and how this method has evolved over the last few decades. The concept of immunoisolation came out of the need to protect allogeneic transplant tissue from the host immune system and avoid systemic side effects of immunosuppression. The latter remains a significant hurdle in clinical translation of using tissue transplants for restoring endocrine function in diabetes, growth hormone deficiency, and other conditions. Herein, we review the most significant works studying the use of hydrogels, specifically alginate and poly (ethylene glycol), and membranes for immunoisolation and discuss how this approach can be applied in reproductive biology.
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Affiliation(s)
- Anu David
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - James Day
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
| | - Ariella Shikanov
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, MI 48109, USA
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Perteghella S, Vigani B, Crivelli B, Spinaci M, Galeati G, Bucci D, Vigo D, Torre ML, Chlapanidas T. Sperm Encapsulation from 1985 to Date: Technology Evolution and New Challenges in Swine Reproduction. Reprod Domest Anim 2015; 50 Suppl 2:98-102. [DOI: 10.1111/rda.12538] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2015] [Accepted: 04/20/2015] [Indexed: 11/29/2022]
Affiliation(s)
- S Perteghella
- Department of Drug Sciences; University of Pavia; Pavia Italy
| | - B Vigani
- Department of Drug Sciences; University of Pavia; Pavia Italy
| | - B Crivelli
- Department of Drug Sciences; University of Pavia; Pavia Italy
| | - M Spinaci
- Department of Veterinary Medical Sciences-DIMEVET; University of Bologna; Ozzano dell'Emilia Bologna Italy
| | - G Galeati
- Department of Veterinary Medical Sciences-DIMEVET; University of Bologna; Ozzano dell'Emilia Bologna Italy
| | - D Bucci
- Department of Veterinary Medical Sciences-DIMEVET; University of Bologna; Ozzano dell'Emilia Bologna Italy
| | - D Vigo
- Department of Veterinary Sciences and Public Health; University of Milan; Milan Italy
| | - ML Torre
- Department of Drug Sciences; University of Pavia; Pavia Italy
| | - T Chlapanidas
- Department of Drug Sciences; University of Pavia; Pavia Italy
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5
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Spinaci M, Perteghella S, Chlapanidas T, Galeati G, Vigo D, Tamanini C, Bucci D. Storage of sexed boar spermatozoa: Limits and perspectives. Theriogenology 2015; 85:65-73. [PMID: 26116059 DOI: 10.1016/j.theriogenology.2015.05.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 05/22/2015] [Accepted: 05/24/2015] [Indexed: 11/20/2022]
Abstract
Despite the great potential application of sex-sorted spermatozoa in swine, the technology is not practiced in the pig industry because of technical factors and species-specific issues. The susceptibility of boar spermatozoa to stresses induced by the sorting procedure, the relative slowness of the sex-sorting process together with the high sperm numbers required for routine artificial insemination in pig are some of the main factors limiting the commercial application of this technology in pigs. This review briefly describes the damage to spermatozoa during sex sorting, focusing on an additional limiting factor: increased susceptibility of sexed boar spermatozoa to injuries induced by liquid storage and cryopreservation that, in turn, impairs sperm quality leading to unsatisfactory results in vivo. Strategies to extend the lifespan of sex-sorted boar spermatozoa and to improve their fertilizing ability after liquid storage or cryopreservation need to be implemented before this technology can be used in pig farms. In this regard, encapsulation in barium alginate membranes could be a promising technique to optimize the in vivo use of sexed boar spermatozoa, by protecting, targeting, and controlling the release of sperm into the female genital tract.
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Affiliation(s)
- M Spinaci
- Department of Veterinary Medical Sciences-DIMEVET, University of Bologna, Bologna, Italy.
| | - S Perteghella
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - T Chlapanidas
- Department of Drug Sciences, University of Pavia, Pavia, Italy
| | - G Galeati
- Department of Veterinary Medical Sciences-DIMEVET, University of Bologna, Bologna, Italy
| | - D Vigo
- Department of Veterinary Science and Public Health, University of Milan, Milano, Italy
| | - C Tamanini
- Department of Veterinary Medical Sciences-DIMEVET, University of Bologna, Bologna, Italy
| | - D Bucci
- Department of Veterinary Medical Sciences-DIMEVET, University of Bologna, Bologna, Italy
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6
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Boar sperm changes after sorting and encapsulation in barium alginate membranes. Theriogenology 2013; 80:526-32. [DOI: 10.1016/j.theriogenology.2013.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Revised: 05/14/2013] [Accepted: 05/15/2013] [Indexed: 11/20/2022]
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7
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Encapsulation of sex sorted boar semen: Sperm membrane status and oocyte penetration parameters. Theriogenology 2013; 79:575-81. [DOI: 10.1016/j.theriogenology.2012.10.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 10/25/2012] [Accepted: 10/27/2012] [Indexed: 01/18/2023]
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8
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Wieland M, Fussenegger M. Reprogrammed cell delivery for personalized medicine. Adv Drug Deliv Rev 2012; 64:1477-87. [PMID: 22721864 DOI: 10.1016/j.addr.2012.06.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 06/01/2012] [Accepted: 06/13/2012] [Indexed: 11/29/2022]
Abstract
In most approaches, personalized medicine requires time- and cost-intensive characterization of an individual's genetic background in order to achieve the best-adapted therapy. For this purpose, cell-based drug delivery offers a promising alternative. In particular, synthetic biology has introduced the vision of cells being programmable therapeutic production facilities that can be introduced into patients. This review highlights the progress made in synthetic biology-based cell engineering toward advanced drug delivery entities. Starting from basic one-input responsive transcriptional or post-transcriptional gene control systems, the field has reached a level on which cells can be engineered to detect cancer cells, to obtain control over T-cell proliferation, and to restore blood glucose homeostasis upon blue light illumination. Furthermore, a cellular implant was developed that detects blood urate level disorders and acts accordingly to restore homeostasis while another cellular implant was engineered as an artificial insemination device that releases bull sperm into bovine ovarian only during ovulation time by recording endogenous luteinizing hormone levels. Soon, the field will reach a stage at which cells can be reprogrammed to detect multiple metabolic parameters and self-sufficiently treat any disorder connected to them.
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Affiliation(s)
- Markus Wieland
- ETH Zurich, Department of Biosystems Science and Bioengineering (D-BSSE), Mattenstrasse 26, CH-4058 Basel, Switzerland
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9
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Faustini M, Vigo D, Spinaci M, Galeati G, Torre ML. Enhancing Insemination Performance in Pigs Through Controlled Release of Encapsulated Spermatozoa. Reprod Domest Anim 2012; 47 Suppl 4:353-8. [DOI: 10.1111/j.1439-0531.2012.02098.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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10
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Ausländer S, Wieland M, Fussenegger M. Smart medication through combination of synthetic biology and cell microencapsulation. Metab Eng 2012; 14:252-60. [DOI: 10.1016/j.ymben.2011.06.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2011] [Revised: 05/11/2011] [Accepted: 06/09/2011] [Indexed: 01/05/2023]
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11
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Holt WV. Mechanisms of sperm storage in the female reproductive tract: an interspecies comparison. Reprod Domest Anim 2012; 46 Suppl 2:68-74. [PMID: 21884282 DOI: 10.1111/j.1439-0531.2011.01862.x] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Once semen has been collected for artificial insemination, it is diluted into extenders designed to prevent its deterioration over the period prior to insemination. If the semen is not frozen, the extenders provide protection for a period of a few hours to a few days, depending on species. Despite the efforts of biotechnologists to increase the duration of storage without compromising fertility, there has been relatively little progress for many years. However, comparative studies in diverse species have revealed that long-term sperm storage (up to months and years) within the female reproductive tract is relatively commonplace in reptiles, fishes, birds and amphibians. Even among mammals, some species of bat have evolved mechanisms for storing spermatozoa for several months in the uterus or oviduct so that they can mate in the autumn but postpone fertilization until the spring. We currently know little about the mechanisms that support such long-term sperm storage, mainly because evidence from such species is either absent or fragmentary. Nevertheless, parallels between mammalian and other systems, where spermatozoa are sequestered in sperm storage tubules, suggest that the enclosure of spermatozoa within pockets of epithelial cells may be sufficient to achieve long-term sperm storage. In addition, recent evidence from sperm-storing bats has suggested an alternative, or additional, hypothesis that the modulation of apoptosis within epithelial cells is important in controlling sperm survival. Despite a lack of direct experimental evidence from a wide variety of species, I propose that there is now enough evidence to warrant investigation of these hypotheses.
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Affiliation(s)
- William V Holt
- Institute of Zoology, Zoological Society of London, Regent's Park, London, UK.
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Faustini M, Bucco M, Galeati G, Spinaci M, Villani S, Chlapanidas T, Ghidoni I, Vigo D, Torre ML. Boar Sperm Encapsulation ReducesIn VitroPolyspermy. Reprod Domest Anim 2010; 45:359-62. [DOI: 10.1111/j.1439-0531.2008.01213.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Iaffaldano N, Rosato MP, Paventi G, Pizzuto R, Gambacorta M, Manchisi A, Passarella S. The irradiation of rabbit sperm cells with He-Ne laser prevents their in vitro liquid storage dependent damage. Anim Reprod Sci 2009; 119:123-9. [PMID: 19932573 DOI: 10.1016/j.anireprosci.2009.10.005] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Revised: 10/01/2009] [Accepted: 10/06/2009] [Indexed: 10/20/2022]
Abstract
The aim of the study was to investigate the effects of different energy doses of helium-neon (He-Ne) laser irradiation on both mitochondrial bioenergetics functions and functional quality of rabbit spermatozoa during 48 h of in vitro liquid storage at 15 degrees C. 11 rabbit semen pools were each divided into four aliquots: three of them were irradiated with He-Ne laser with different energy doses (3.96, 6.12 and 9.00 J/cm(2)) being the last control kept under the same experimental conditions without irradiation. Sperm motility, viability and acrosome integrity were monitored together with cytochrome c oxidase (COX) activity and the cell energy charge (EC) at 0, 24 and 48 h of storage. Irradiated samples stored for 24 and 48 h better maintained motility (P < 0.01), acrosome integrity (P < 0.01) and viability (P < 0.05) with respect to the control, particularly with the energy dose of 6.12 J/cm(2) that showed the most intense biostimulative effect. COX activity and EC were immediately increased by irradiation particularly in the treatments 6.12 and 9.00 J/cm(2) (P < 0.05), that maintained their levels higher with respect to the control after 48 h of storage (P < 0.01). COX activity of rabbit sperm cells was positively correlated with EC (P < 0.05), viability (P < 0.01) and acrosome integrity (P < 0.05) parameters. These results indicate that the effects of He-Ne laser irradiation on sperm cells are mediated through the stimulation of the sperm mitochondrial respiratory chain and that this effect plays a significant role in the augmentation of the rabbit sperm cells' capability to survive during liquid storage conditions.
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Affiliation(s)
- Nicolaia Iaffaldano
- Department of Animal, Vegetable and Environmental Sciences, University of Molise, 86100 Campobasso, Italy.
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15
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Vigo D, Faustini M, Villani S, Orsini F, Bucco M, Chlapanidas T, Conte U, Ellis K, Torre ML. Semen controlled-release capsules allow a single artificial insemination in sows. Theriogenology 2009; 72:439-44. [PMID: 19505716 DOI: 10.1016/j.theriogenology.2009.03.013] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2008] [Revised: 02/18/2009] [Accepted: 03/29/2009] [Indexed: 11/28/2022]
Abstract
Controlled-release capsules containing boar spermatozoa were developed to extend the preservation time of spermatozoa and maximize the efficiency of a single artificial insemination. A large trial (4245 sows) was performed with these capsules using double/triple conventional artificial insemination as a control. The effect of treatment on pregnancy diagnosis, delivery, and born piglets was investigated, with allowance being made for considering season, spermatozoa amount, and the weaning-to-estrus interval as confounding variables. The same pregnancy rate and prolificacy were obtained by two insemination techniques, and a higher parturition frequency was reached with capsules. The reproductive performance in pigs has therefore been optimized by a single instrumental insemination with controlled-release capsules.
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Affiliation(s)
- D Vigo
- Dipartimento di Scienze e Tecnologie Veterinarie per la Sicurezza Alimentare, University of Milan, 20133 Milan, Italy
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16
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García V, García-Pérez E, Belyakova E, Llames S, Pevida M, Tevar F, Otero J, Meana A. Room Temperature Storage of Cultured Human Articular Chondrocytes. ACTA ACUST UNITED AC 2008. [DOI: 10.1089/cpt.2008.0009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Verónica García
- Centro Comunitario de Sangre y Tejidos, Principado de Asturias, Oviedo, Spain
- Fundación INCLINICA, Oviedo, Spain
| | - Eva García-Pérez
- Centro Comunitario de Sangre y Tejidos, Principado de Asturias, Oviedo, Spain
| | - Elena Belyakova
- Departamento de Biología Funcional e Instituto Universitario de Oncología del Principado de Asturias (IUOPA), Universidad de Oviedo, Oviedo, Spain
| | - Sara Llames
- Centro Comunitario de Sangre y Tejidos, Principado de Asturias, Oviedo, Spain
- CIBER de Enfermedades Raras (CIBERER, V714), Oviedo, Spain
| | - Marta Pevida
- Centro Comunitario de Sangre y Tejidos, Principado de Asturias, Oviedo, Spain
| | - Francisco Tevar
- Centro Comunitario de Sangre y Tejidos, Principado de Asturias, Oviedo, Spain
| | - Jesús Otero
- Coordinación de Transplantes, Hospital Central de Asturias, Oviedo, Spain
| | - Alvaro Meana
- Centro Comunitario de Sangre y Tejidos, Principado de Asturias, Oviedo, Spain
- CIBER de Enfermedades Raras (CIBERER, V714), Oviedo, Spain
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Faustini M, Riccardi A, Villani S, Russo V, Torre ML, Conte U, Vigo D. A single insemination intervention in the sow with barium alginate-encapsulated boar semen. Vet Res Commun 2008; 32 Suppl 1:S147-9. [DOI: 10.1007/s11259-008-9115-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Gaetani P, Torre ML, Klinger M, Faustini M, Crovato F, Bucco M, Marazzi M, Chlapanidas T, Levi D, Tancioni F, Vigo D, Rodriguez y Baena R. Adipose-Derived Stem Cell Therapy for Intervertebral Disc Regeneration: AnIn VitroReconstructed Tissue in Alginate Capsules. Tissue Eng Part A 2008; 14:1415-23. [DOI: 10.1089/ten.tea.2007.0330] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Paolo Gaetani
- Unità Operativa di Neurochirurgia, Istituto Clinico Humanitas, Milan, Italy
| | - Maria Luisa Torre
- Dipartimento di Chimica Farmaceutica, Università di Pavia, Pavia, Italia
| | - Marco Klinger
- Unità Operativa Chirurgia Plastica II, Istituto Clinico Humanitas, Università di Milano, Milan, Italy
| | - Massimo Faustini
- Dipartimento di Scienze e Tecnologie Veterinarie per la Sicurezza Alimentare, Università di Milano, Milan, Italy
| | - Francesca Crovato
- Struttura Semplice Terapia Tissutale, Azienda Ospedale Niguarda Ca' Granda, Milan, Italy
| | - Massimo Bucco
- Dipartimento di Chimica Farmaceutica, Università di Pavia, Pavia, Italia
| | - Mario Marazzi
- Struttura Semplice Terapia Tissutale, Azienda Ospedale Niguarda Ca' Granda, Milan, Italy
| | | | - Daniel Levi
- Unità Operativa di Neurochirurgia, Istituto Clinico Humanitas, Milan, Italy
| | | | - Daniele Vigo
- Dipartimento di Scienze e Tecnologie Veterinarie per la Sicurezza Alimentare, Università di Milano, Milan, Italy
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Roca J, Vázquez JM, Gil MA, Cuello C, Parrilla I, Martínez EA. Challenges in Pig Artificial Insemination. Reprod Domest Anim 2006; 41 Suppl 2:43-53. [PMID: 16984468 DOI: 10.1111/j.1439-0531.2006.00768.x] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Semen extended in a liquid state, together with conventional artificial insemination (AI), is the sole sperm technology used by the pig industry. Sperm technologies known for many years, such as cryopreservation, and others developed during recent years, such as sperm sexing, have not yet been integrated into commercial use. Moreover, there has recently been an explosion of new technologies, such as sperm mediated gene transfer or encapsulated spermatozoa which need additional supportive techniques before they can be economically applied to pig breeding. The speed with which the aforementioned sperm technologies are accepted and utilized by the pig industry depends on the availability of efficient insemination procedures. Therefore, AI is entering a new dimension where it will be converted into a tool for the efficient application of current and new sperm technologies. Some new insemination procedures have been recently developed. This review examines the suitability of available insemination procedures for the efficient application of current, emergent and future sperm technology to the pig industry.
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Affiliation(s)
- J Roca
- Department of Medicine and Animal Surgery, Faculty of Veterinary Medicine, Campus de Espinardo, University of Murcia, Murcia, Spain.
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20
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Herrler A, Eisner S, Bach V, Weissenborn U, Beier HM. Cryopreservation of spermatozoa in alginic acid capsules. Fertil Steril 2006; 85:208-13. [PMID: 16412755 DOI: 10.1016/j.fertnstert.2005.06.049] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2005] [Revised: 06/15/2005] [Accepted: 06/15/2005] [Indexed: 11/22/2022]
Abstract
OBJECTIVE To develop a method of freezing small amounts of spermatozoa in polymerized alginic acid drops, which can be liquified after thawing for recovery of the spermatozoa. DESIGN Prospective clinical study. SETTING Medical School, RWTH Aachen, Aachen Germany. PATIENT(S) None. INTERVENTION(S) Validation of the encapsulation method with bovine sperm; cryopreservation of human spermatozoa in alginic capsules. MAIN OUTCOME MEASURE(S) We optimized the cryopreservation method by testing different parameters influencing the freezing procedure, such as concentration of alginic acid, size of drops, time of polymerization, and culture media. RESULT(S) The final protocol was as follows: encapsulation by 7.3 mg/mL alginic acid forming 10-muL drops polymerized for 30 seconds and liquefied for 2.5 minutes in sodium citrate. Cryopreservation of human spermatozoa by this protocol resulted in a decreased motility of 18.3% compared with standard protocols but a 19.9% higher vitality of the immotile spermatozoa. CONCLUSION(S) No difference in viability of spermatozoa after both sperm-freezing procedures could be observed. Further investigation will be undertaken to reduce the amount of immotile but viable sperm after microencapsulation in alginic acid.
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Affiliation(s)
- Andreas Herrler
- Department of Anatomy and Reproductive Biology, Medical School, RWTH Aachen, Aachen, Germany.
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21
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Huang SY, Tu CF, Liu SH, Kuo YH. Motility and fertility of alginate encapsulated boar spermatozoa. Anim Reprod Sci 2005; 87:111-20. [PMID: 15885444 DOI: 10.1016/j.anireprosci.2004.09.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2004] [Revised: 08/20/2004] [Accepted: 09/17/2004] [Indexed: 10/26/2022]
Abstract
Ejaculated boar spermatozoa are vulnerable to cold shock. Prolonged storage of boar spermatozoa at low temperatures reduces survival rate, resulting in a bottleneck for the extension of artificial insemination in pig husbandry. This study evaluated whether alginate microencapsulization processing can improve the longevity of boar spermatozoa stored at 5 degrees C and the fertility of microencapsulated spermatozoa in vivo. Sperm-rich fraction semen from three purebred boars were concentrated and microencapsulated using alginate at 16-18 degrees C, and then were stored at 5 degrees C. Following storage for 1, 3 and 7 days, the microcapsule was taken out to assess sperm release under 37 degrees C incubation with or without 110 rpm stirring. The percentage of sperm released from microcapsules with 110 rpm stirring was higher than without stirring (81 versus 60%) after 24h of incubation. In another experiment, semen was also microencapsulated to evaluate the sperm motility. The motility of spermatozoa was assessed at 10 min, 8, 24, 32, 48, 56 and 72 h following incubation at 37 degrees C for nine consecutive days. The fertility of the free and microencapsulated semen was assessed by inseminating sows, and the reproductive traits (conception rate, farrowing rate, and litter size) were recorded. The motility of encapsulated spermatozoa was significantly higher than that of free semen after 8h incubation at 37 degrees C after storing for over three days (P<0.05). No significant difference existed in conception rate, farrowing rate, and litter size between the microencapsulated and non-encapsulated semen after four days of storage. In conclusion, microencapsulation can increase the longevity of boar spermatozoa and may sustain in vivo ova fertilization ability.
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Affiliation(s)
- San-Yuan Huang
- Division of Biotechnology, Animal Technology Institute Taiwan, P.O. Box 23, Chunan, Miaoli 35099, Taiwan, ROC
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22
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Van Thuan N, Wakayama S, Kishigami S, Wakayama T. New Preservation Method for Mouse Spermatozoa Without Freezing1. Biol Reprod 2005; 72:444-50. [PMID: 15483221 DOI: 10.1095/biolreprod.104.034678] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
The objective of this study was to investigate the preservation of spermatozoa in a simple medium without freezing and to examine the effects of the preserved sperm on fertilization and development after injection into mature mouse oocytes. Mouse spermatozoa were collected from two caudae epididymides of mature B6D2F1 males and stored under various conditions: 1) in KSOMaa medium (potassium simplex optimized medium with amino acids) supplemented with 0, 1, or 4 mg/ml BSA and held at room temperature (RT, 27 degrees C); 2) in KSOMaa medium containing 4 mg/ml BSA (KSOM-BSA) and held at 4 degrees C, RT, or 37 degrees C (CO2 incubator); 3) in KSOM-BSA with osmolarity ranging from 271 to 2000 mOsmol, adjusted by addition of NaCl and held at 4 degrees C; and 4) a two-step preservation system consisting of storage in 800 mOsmol KSOM-BSA for 1 wk at RT followed by storage at -20 degrees C. Preservation of mouse spermatozoa at 4 degrees C in a medium with high osmolarity (700-1000 mOsmol) resulted in the highest frequency of live births after intracytoplasmic sperm injection (ICSI) into mature oocytes. The optimal conditions for preservation of mouse spermatozoa were 800 mOsmol KSOM containing 4 mg/ml BSA and a holding temperature of 4 degrees C. More than 40% of oocytes injected with sperm heads stored under these conditions for 2 mo developed to the morula/blastocyst stage in vitro and 39% of the embryos developed to term after transfer to recipient mice. Our results also indicate that mouse spermatozoa can be stored in 800 mOsmol KSOM-BSA medium at RT for 1 wk and then at -20 degrees C for up to 3 mo and retain their competence for ICSI. These new preservation methods permit extended conservation of viable spermatozoa that are capable of supporting normal embryonic development and the live birth of healthy offspring after ICSI.
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Affiliation(s)
- Nguyen Van Thuan
- RIKEN Kobe Institute, Center for Developmental Biology, Laboratory for Genomic Reprogramming, Chuo-ku, Kobe City, Hyogo 650-0047, Japan.
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Vigo D, Torre M, Faustini M, Munari E, Russo V, Norberti R, Villani S, Asti A, Bini P, Conte U. Barium alginate capsules for 3D immobilisation of living cells: morphology, membrane properties and permeability. J Drug Deliv Sci Technol 2004. [DOI: 10.1016/s1773-2247(04)50096-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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