Influence of cysteamine supplementation and culture in portable dry-incubator on the in vitro maturation, fertilization and subsequent development of mouse oocytes
| Autor: | Lay-Geok Tan, Soon-Chye Ng, Naiqing Chen, Swee-Lian Liow, Wan-Yue Yip |
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| Rok vydání: | 2005 |
| Předmět: |
Hot Temperature
Cysteamine Cell Culture Techniques Embryonic Development Fertilization in Vitro Biology Embryo Culture Techniques Andrology Incubators Mice chemistry.chemical_compound Human fertilization Food Animals medicine Animals Blastocyst Small Animals Germinal vesicle Equine Embryogenesis Incubator Carbon Dioxide Oocyte Molecular biology Culture Media In vitro maturation Mice Inbred C57BL medicine.anatomical_structure chemistry Mice Inbred CBA Oocytes Female Animal Science and Zoology |
| Zdroj: | Theriogenology. 63:2300-2310 |
| ISSN: | 0093-691X |
| Popis: | The need to transport oocytes and embryos between two laboratories have prompted us to evaluate the effects of in vitro maturation of immature mouse oocytes in a CO2-deficient dry heat portable incubator and subsequent in vitro development of these fertilized mouse oocytes in a standard CO2 incubator. In addition, the effects of cysteamine supplementation on maturation rate and embryonic development during in vitro maturation (IVM) and culture of embryos in the portable incubator were also investigated. Germinal vesicle stage mouse oocytes, recovered at 40-h post-FSH from 6- to 8-week-old C57BL/6xCBA F1 healthy female mice, were matured in vitro in a modified TCM-199 supplemented with or without 100 microM cysteamine in a standard incubator (5% CO2; 37 degrees C) or cultured in a CO2-deficient dry heat portable incubator for 5 h at 37 degrees C and thereafter transferred to a standard incubator for further culture. The addition of cysteamine in the IVM medium significantly improved maturation rates of the GV mouse oocytes to metaphase II stage. However, cysteamine supplementation in the culture medium did not significantly improve fertilization and blastocyst formation rates of IVM and ovulated oocytes, and in vivo-derived zygotes. Culture conditions in a CO2-deficient dry heat portable incubator did not adversely affect the developmental competence of in vivo-derived zygotes and in vitro matured mouse oocytes after IVF or parthenogenetic activation. Cysteamine supplement in the IVM medium could enhance nuclear maturation of these immature oocytes during shipment. |
| Databáze: | OpenAIRE |
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