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Effect of variations in temperature of injected saline on early development of chick embryo
A Kotwani1, V L Mehta, B Iyenger
1Department of Pharmacology, Maulana Azad Medical College, New Delhi, India.
Insights
Injecting solutions at temperatures other than 37°C can harm developing chick embryos. Maintaining the correct temperature is crucial for normal neural tube development and accurate experimental results.
Area of Science:
- Developmental biology
- Embryology
- Teratology
Background:
- Chick embryo development is temperature-sensitive.
- Incubation temperature deviations cause developmental defects.
- The impact of injected fluid temperature on embryonic development is unknown.
Purpose of the Study:
- To investigate the effect of injected saline temperature on neural tube formation in chick embryos.
- To establish the optimal temperature for administering solutions to developing embryos.
Main Methods:
- Freshly embryonated eggs were incubated.
- Saline solution was injected at various temperatures after 17 hours of incubation.
- Embryos were analyzed for neural tube development.
Main Results:
- Normal neural tube development occurred only when saline was injected at 37°C.
- Both higher and lower saline temperatures resulted in neural tube maldevelopment.
- Temperature variations significantly impacted embryonic development.
Conclusions:
- The ideal temperature for injecting solutions into developing chick embryos is 37°C.
- Deviations from 37°C can lead to maldevelopment and affect experimental outcomes.
- Standardizing injection temperature is critical for reliable research.
Abstract:
Development of chick embryo is sensitive to the incubation temperature and increase or decrease in incubation temperature produces defect in development but the effect of drug solution injected at variable temperatures on developing chick embryo has not been established so far. Fresh embryonated eggs were incubated and saline was administered at various temperatures after 17 hr of incubation. Embryos were harvested to see the effect of temperature variations of injected saline on neural tube formation. Normal neural tube development was seen only at 37 degrees C, hot or cold saline produced maldevelopment of neural tube. Thus it is concluded that any solution or drug which needs to be injected should ideally be used at 37 degrees C, as temperature lower or higher than that may vitiate the results.