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Updated: Jun 5, 2026
Optimized Ex-ovo Culturing of Chick Embryos to Advanced Stages of Development
Published on: January 24, 2015
[Effects of morphine on the development of chick embryos]
Yi Che1, Yong-hua Cui, Yu-fang Zhu
1School of Life Science, Suzhou University, Suzhou 215006, China. cheyiwenshan@sina.com.cn
Insights
Morphine exposure during embryonic development negatively impacts chick development, affecting movement and heart rate. However, specific dosage and timing (20 mg/kg from E12-E16) improved hatch rates and reduced motor disorders.
Area of Science:
- Embryology
- Pharmacology
- Developmental Biology
Context:
- Opioid exposure during critical developmental windows can have profound effects on organismal development.
- Understanding the impact of maternal or environmental drug exposure on embryonic development is crucial for predicting health outcomes.
Purpose:
- To determine the effects of morphine administration on key developmental parameters in chick embryos.
- To investigate dose- and time-dependent responses to morphine exposure during embryonic development.
Summary:
- Morphine injection into chick eggs led to reduced fetal movement and increased heart rate.
- Adverse effects included shorter hatch times, lower hatch rates, and motor disorders in chicks.
- Optimal results, including the highest hatch rate and lowest disable rate, were observed with morphine exposure at 20 mg/kg from embryonic day 12 to 16.
Impact:
- Morphine exposure impairs chick embryo development, with effects contingent on dosage and exposure duration.
- Findings highlight the sensitivity of embryonic development to opioid exposure and inform risk assessment for similar compounds.
- This research provides insights into potential developmental toxicity of opioids and suggests therapeutic windows for mitigating adverse effects.
Aim:
To investigate the effect of morphine on fetal movement, heart rate, hatch weight, hatch days and hatch rate.
Methods:
Morphine was injected into airspace of eggs and fetal movement, heart rate, hatch weight, hatch days and hatch rates were recorded.
Results:
Hatch days were shorter, hatch rates were lower and some chicks became motor disorder for morphine. Chicks with morphine exposure 20 mg/kg from E 12 to E 16 had highest hatch rate and lowest disable rate. Morphine reduced fetal movement, increased heart rate (P < 0.05).
Conclusion:
The development of chick embryo is impaired by morphine exposure and the magnitude of these effects depends on the drug dose and the length of time that the developing organism is exposed to morphine.
