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Jewgenow K, Zahmel J. Preservation of female genetic resources in feline species. Theriogenology 2020; 156:124-129. [PMID: 32698038 DOI: 10.1016/j.theriogenology.2020.06.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 06/27/2020] [Indexed: 02/05/2023]
Abstract
The development of assisted reproduction techniques (ART) specifically for felids has been propagated for two main reasons: (i) most felids are threatened and faced with extinction in all or part of their native habitats (IUCN Red List of Threatened Species, www.catsg.org), and (ii) the domestic cat (Felis catus) can serve as a research model for the implementation of advanced assisted reproductive techniques (ART) to be applied in exotic cats. Domestic cat ovaries can be freshly obtained from veterinary clinics and are frequently used for research on preservation of genetic resources in feline species. The presented review will summarize recent advances and obstacles in biobanking of female genetic resources and discuss alternative approaches which are under investigation.
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Affiliation(s)
- Katarina Jewgenow
- Leibniz-Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315, Berlin, Germany.
| | - Jennifer Zahmel
- Leibniz-Institute for Zoo and Wildlife Research, Alfred-Kowalke-Str. 17, D-10315, Berlin, Germany
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Alam ME, Iwata J, Fujiki K, Tsujimoto Y, Kanegi R, Kawate N, Tamada H, Inaba T, Sugiura K, Hatoya S. Feline embryo development in commercially available human media supplemented with fetal bovine serum. J Vet Med Sci 2019; 81:629-635. [PMID: 30787208 PMCID: PMC6483925 DOI: 10.1292/jvms.18-0335] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Feline embryo development was examined for 7 days after fertilization using commercially
available human media supplemented with 0.3% bovine serum albumin (BSA) or 5% fetal bovine
serum (FBS). Cumulus-oocyte complexes were categorized as Grades 1, 2, and 3 according to
morphology. Only-One Medium (OM) was used for in vitro culture (IVC) in
OM + BSA, OM + FBS, and OM + BSA/FBS, with BSA supplementation for the first 2 days and
FBS for the subsequent 5 days. Embryos cultured in Early Culture Medium (1–2 days) and
Blastocyst Medium (3–7 days) were defined as EB + BSA and EB + BSA/FBS. The developmental
rate until the blastocyst stage of Grade 1 and 2 oocytes cultured in OM + BSA/FBS was
higher than for the other groups and was significantly higher than for the OM + BSA and EB
+ BSA groups (P<0.01). Grade 3 oocytes cultured in OM + BSA/FBS also
showed the greatest proportion of blastocyst formation. However, FBS supplementation
throughout the IVC period reduced blastocyst number. The percentage of 2 pronuclei after
fertilization as well as blastocyst cell number were significantly higher in Grade 1 and 2
than Grade 3 oocytes when cultured in OM + BSA/FBS (P<0.05). These
results indicate that commercially available OM supplemented with BSA for the first 2 days
of culture and FBS for the subsequent 5 days is suitable for feline embryo development
until the blastocyst stage.
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Affiliation(s)
- Md Emtiaj Alam
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Jun Iwata
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Kana Fujiki
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Yasunori Tsujimoto
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Ryoji Kanegi
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Noritoshi Kawate
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Hiromichi Tamada
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Toshio Inaba
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Kikuya Sugiura
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
| | - Shingo Hatoya
- Department of Advanced Pathobiology, Graduate School of Life and Environmental Sciences, Osaka Prefecture University, Izumisano, Osaka 598-8531, Japan
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Prediction of maturational competence of feline oocytes using supravital staining of cumulus cells by propidium iodide. ZYGOTE 2011; 20:333-7. [PMID: 21729378 DOI: 10.1017/s096719941100027x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
We examined the relationship between integrity of cumulus cells and nuclear maturation rate after in vitro culture to determine a non-invasive prediction of the maturational competence of feline oocytes. Feline cumulus-oocyte complexes (COCs) were collected from either small (400-800 μm) or large (≥800 μm) follicles. Immediately after collection, cumulus cells were evaluated morphologically (thickness of cumulus cell layers) and stained with propidium iodide (PI), which penetrates only non-viable cells. Cumulus cells without PI staining were judged as having good membrane integrity. After evaluation, COCs were cultured for 30 h and their nuclear maturation rate was determined. The nuclear maturation rate of oocytes derived from large follicles (89.8%) was higher (p < 0.05) than that from small follicles (60.8%). There was no difference in the maturation rate of oocytes from follicles with the same size regardless of cumulus morphology. In contrast, oocytes that had cumulus cells with good membrane integrity showed a higher maturation rate (93.8%) than oocytes with poor cumulus integrity (76.9%) in large follicles (p < 0.05). We conclude that evaluation of membrane integrity of cumulus cells by propidium iodide staining can be used to predict the maturational competence of oocytes.
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TOMII R, OGAWA B, IMAI N, HANDA Y, SASAYAMA N, SHIRASU A, NAGASHIMA H. In Vitro Development and Postvitrification Survival of Cloned Feline Embryos Derived from Preadipocytes. J Reprod Dev 2011; 57:273-9. [DOI: 10.1262/jrd.10-105a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
- Ryo TOMII
- Laboratory of Developmental Engineering, Department of Life Science, School of Agriculture, Meiji University
- Research & Development Institute for Artificial Organs, Research & Development Laboratory, Nipro Corporation
| | - Buko OGAWA
- Laboratory of Developmental Engineering, Department of Life Science, School of Agriculture, Meiji University
| | - Naoko IMAI
- Laboratory of Developmental Engineering, Department of Life Science, School of Agriculture, Meiji University
| | - Yukiko HANDA
- Laboratory of Developmental Engineering, Department of Life Science, School of Agriculture, Meiji University
| | - Norihisa SASAYAMA
- Research & Development Institute for Artificial Organs, Research & Development Laboratory, Nipro Corporation
| | - Akio SHIRASU
- Research & Development Institute for Artificial Organs, Research & Development Laboratory, Nipro Corporation
| | - Hiroshi NAGASHIMA
- Laboratory of Developmental Engineering, Department of Life Science, School of Agriculture, Meiji University
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5
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Uchikura K, Nagano M, Hishinuma M. The effect of ovarian status and follicular diameter on maturational ability of domestic cat oocytes. J Vet Med Sci 2010; 73:561-6. [PMID: 21173554 DOI: 10.1292/jvms.10-0381] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The objective of this study was to clarify the effect of ovarian status and follicular size on morphological normality and maturational ability of cat oocytes. Ovarian status was classified into inactive, follicular, luteal and prepubertal, and follicles were classified into three groups according to their diameter (400-800, 800-1200 and 1200-2000 µm). In each ovarian status, the number of follicles decreased but the percentage of morphologically normal oocytes increased with the growth of follicles (p<0.05). Only a single follicle that was 1200-2000 µm in diameter was observed in two of the five prepubertal cats. In follicles that were 800-1200 µm in diameter, the percentage of normal oocytes and maturation rate were higher in prepubertal cats than in mature cats (p<0.05). Oocyte diameter tended to increase with the growth of follicles. After oocytes were cultured individually in droplets of maturation medium, the oocyte maturation rate increased with the growth of follicles in each ovarian status (p<0.05). In conclusion, oocytes collected from larger follicles possess higher maturational ability in vitro in sexually mature cats. In prepubertal cats, a higher maturation rate can be obtained from oocytes derived from small follicles compared with in mature cats.
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Affiliation(s)
- Kenzo Uchikura
- Department of Theriogenology, School of Veterinary Medicine, Faculty of Agriculture, Tottori University, 4–101 Koyama-Minami,Tottori 680–8553, Japan
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Uchikura K, Nagano M, Hishinuma M. Evaluation of Follicular Development and Oocyte Quality in Pre-pubertal Cats. Reprod Domest Anim 2010; 45:e405-11. [DOI: 10.1111/j.1439-0531.2010.01590.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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