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Praxedes ÉCG, Lima GL, Bezerra LGP, Santos FA, Bezerra MB, Guerreiro DD, Rodrigues APR, Domingues SFS, Silva AR. Development of fresh and vitrified agouti ovarian tissue after xenografting to ovariectomised severe combined immunodeficiency (SCID) mice. Reprod Fertil Dev 2018; 30:459-468. [PMID: 28784201 DOI: 10.1071/rd17051] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 07/12/2017] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to evaluate the development of fresh and vitrified agouti ovarian tissue after xenografting to C57Bl/6 severe combined immunodeficiency (SCID) female mice. Ovaries were obtained from five female agoutis and divided into 16 fragments. Five fragments were transplanted immediately to ovariectomised SCID mice and the others were vitrified, stored for 2 weeks and transplanted only after rewarming. Tissue fragments were transplanted under the kidney capsule in recipients. The return of ovarian activity in recipients was monitored by the observation of external signs of oestrus and vaginal cytology over a period of 40 days after transplantation, after which the grafts were removed and evaluated for morphology, cell proliferation and the occurrence of DNA fragmentation. Ovarian activity returned in four of five mice that received fresh ovarian tissue from agoutis and in one of six mice that had received vitrified tissue a mean (±s.e.m.) 20.6±8.6 days after xenotransplantation. After graft removal, a predominance of primordial and primary follicles was observed in all grafts. Vitrification reduced cell proliferation and increased the occurrence of DNA fragmentation in grafted agouti ovarian tissue. In conclusion, the present study demonstrates that xenografted agouti ovarian tissue, fresh or vitrified, is able to promote the return of ovarian activity in ovariectomised SCID C57B1/6 mice. However, improvements to vitrification protocols for agouti ovarian tissue are necessary.
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Affiliation(s)
- Érica C G Praxedes
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Gabriela L Lima
- Department of Animal Sciences, Instituto Federal de Educação, Ciência e Tecnologia do Ceará (IFCE), CE-292, KM 15, Gisélia Pinheiro, 63115-500, Crato-CE, Brazil
| | - Luana G P Bezerra
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Fernanda A Santos
- Laboratory of Gonadal Transplantation and Embryo Production, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Marcelo B Bezerra
- Laboratory of Gonadal Transplantation and Embryo Production, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
| | - Denise D Guerreiro
- Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculdade de Veterinária, Universidade do Ceará, Av. Paranjana 1700, Campus do Itaperi, 60714-903, Fortaleza, CE, Brazil
| | - Ana P R Rodrigues
- Laboratory of Manipulation of Oocytes and Preantral Follicles (LAMOFOPA), Faculdade de Veterinária, Universidade do Ceará, Av. Paranjana 1700, Campus do Itaperi, 60714-903, Fortaleza, CE, Brazil
| | - Sheyla F S Domingues
- Laboratory of Amazon Wild Animals Biology and Medicine, Universidade Federal do Pará, Jaderlândia, 68746-360,Castanhal, PA, Brazil
| | - Alexandre R Silva
- Laboratory of Animal Germplasm Conservation, Universidade Federal Rural do Semi-Árido, BR 110, Km 47, Costa e Silva, 59625-900, Mossoró, RN, Brazil
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dos Santos FA, Pimentel MML, Teixeira ACG, Cosmo ÍC, Lima MA, de Brito PD, de Macedo MF, Bezerra MB. Follicular right shift: Xenografting queens' ovarian tissue into severe combined imunnodeficiency mice and its responses to exogenous gonadotropin. Theriogenology 2016; 86:1811-7. [DOI: 10.1016/j.theriogenology.2016.05.034] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 05/20/2016] [Accepted: 05/27/2016] [Indexed: 11/27/2022]
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Woelders H, Windig J, Hiemstra SJ. How developments in cryobiology, reproductive technologies and conservation genomics could shape gene banking strategies for (farm) animals. Reprod Domest Anim 2013; 47 Suppl 4:264-73. [PMID: 22827380 DOI: 10.1111/j.1439-0531.2012.02085.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Many local breeds are currently at risk because of replacement by a limited number of specialized commercial breeds. Concurrently, for many breeds, allelic diversity within breeds declines because of inbreeding. Gene banking of germplasm may serve to secure the breeds and the alleles for any future use, for instance to recover a lost breed, to address new breeding goals, to support breeding schemes in small populations to minimize inbreeding, and for conservation genetics and genomics research. Developments in cryobiology and reproductive technology have generated several possibilities for preserving germplasm in farm animals. Furthermore, in some mammalian and bird species, gene banking of material is difficult or impossible, requiring development of new alternative methods or improvement of existing methods. Depending on the species, there are interesting possibilities or research developments in the use of epididymal spermatozoa, oocytes and embryos, ovarian and testicular tissue, primordial germ cells, and somatic cells for the conservation of genetic diversity in farm- and other animal species. Rapid developments in genomics research also provide new opportunities to optimize conservation and sampling strategies and to characterize genome-wide genetic variation. With regard to gene banks for farm animals, collaboration between European countries is being developed through a number of organizations, aimed at sharing knowledge and expertise between national programmes. It would be useful to explore further collaboration between countries, within the framework of a European gene banking strategy that should minimize costs of conservation and maximize opportunities for exploitation and sustainable use of genetic diversity.
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Affiliation(s)
- H Woelders
- Wageningen UR, Centre for Genetic Resources, CGN, Wageningen, The Netherlands.
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Figueiredo JR, Rodrigues APR, Silva JRV, Santos RR. Cryopreservation and in vitro culture of caprine preantral follicles. Reprod Fertil Dev 2011; 23:40-7. [PMID: 21366979 DOI: 10.1071/rd10227] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Preantral follicles (PFs) form a far larger oocyte reservoir (~90% of the follicular population) than antral follicles. Several laboratories have focussed efforts on cryopreservation and in vitro culture (IVC) of PFs to obtain large numbers of fertilisable oocytes. This technology could be used to improve the reproductive potential of economically important animals, including goats, to preserve endangered species and breeds and improve fertility after chemotherapy in young women. Caprine PFs have been successfully cryopreserved using either vitrification or slow freezing. In addition, in vitro embryo production from oocytes enclosed in caprine PFs grown and matured in vitro was also achieved. The present paper selectively reviews the published studies on cryopreservation and IVC of caprine PFs to highlight advances, limitations and prospects.
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