Related Experiment Videos
Epidermal growth factor enhances oocyte maturation in pigs
1Department of Animal Science, Faculty of Agriculture and Forestry, University of Alberta, Edmonton, Canada.
Molecular Reproduction and Development
|September 1, 1994
Summary
Epidermal Growth Factor (EGF) stimulates nuclear maturation in pig oocytes. When combined with gonadotropins, EGF enhances cytoplasmic maturation, improving oocyte developmental potential.
Area of Science:
- Reproductive Biology
- Developmental Biology
- Cell Biology
Background:
- Epidermal Growth Factor (EGF) is known to promote nuclear maturation in porcine oocytes.
- Further investigation is needed to understand EGF's role in cytoplasmic maturation.
Purpose of the Study:
- To evaluate the effect of EGF, alone or with gonadotropins and follicular shell coculture, on porcine oocyte cytoplasmic maturation in vitro.
- To determine the optimal conditions for enhancing oocyte maturation for improved developmental potential.
Main Methods:
- A preliminary dose-finding experiment for EGF on nuclear maturation.
- A 2x2x2 factorial design experiment to assess EGF, gonadotropins, and follicular shell coculture effects on cytoplasmic maturation.
- Cytoplasmic maturation assessed by sperm decondensation post-penetration.
Main Results:
- EGF significantly increased nuclear maturation rates (MII%) at doses of 0.1, 1, and 10 ng/ml compared to controls.
- EGF alone did not induce cytoplasmic maturation.
- EGF demonstrated a significant positive interaction with gonadotropin treatment, enhancing male pronuclear formation.
Conclusions:
- EGF effectively stimulates nuclear maturation in porcine oocytes in vitro.
- EGF interacts with gonadotropins to enhance cytoplasmic maturation, suggesting a synergistic effect.
- Combining EGF, gonadotropins, and follicular shell coculture optimizes in vitro maturation of porcine oocytes.