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Atrial and ventricular septal changes in ethanol vapour exposed chick embryos
Kiran Kamran1, Muhammad Yunus Khan2, Liaqat Ali Minhas3
1Department of Anatomy, Foundation University Medical College, Rawalpindi.
Insights
Ethanol vapor exposure during early development may cause heart defects in chick embryos. Specifically, it can lead to ventricular septal defects, impacting the development of the heart
Area of Science:
- Embryology
- Developmental Biology
- Teratology
Background:
- The development of the atrial and ventricular septa is crucial for normal heart function.
- Understanding the impact of environmental factors on embryonic development is essential.
Purpose of the Study:
- To investigate the effects of ethanol vapor exposure on the septal development in chick embryos.
- To determine if ethanol vapor exposure can induce congenital heart defects.
Main Methods:
- Chick embryos were exposed to ethanol vapors in a controlled experimental setting.
- Experimental and control groups were compared at various developmental stages.
- Ventricular and atrial septal development were assessed based on established embryological timelines.
Main Results:
- Normal development of the inter-ventricular septum is completed by day 7.
- Ethanol vapor exposure resulted in a discontinuity in the inter-ventricular septum by day 10, indicative of a ventricular septal defect.
- While the interatrial septum formed by day 7, small perforations persisted until hatching.
Conclusions:
- Ethanol vapor exposure during embryonic development may be a teratogenic factor.
- Exposure to ethanol vapor can potentially lead to the formation of ventricular septal defects in chick embryos.
Objective:
To study the effects of ethanol vapour exposure on development of atrial and ventricular septa of chick embryo.
Methods:
The experimental study was conducted at the College of Physicians and Surgeons, Islamabad, from 2006 to 2007. The experimental and control groups were further divided into three subgroups based on the day of sacrifice. The experimental group was exposed to ethanol vapours produced in a specially-designed vapour chamber and then compared with age-matched controls.
Results:
There were 90 eggs in each of the two groups. The development of inter-ventricular septum completed at day 7 of development in chick embryo. Ethanol vapour exposure produced a small discontinuity at day 10 of development in a chick embryo which may be labelled as ventricular septal defect since ventricular development is completed by day 7. Interatrial septum formed till day 7 with small perforations which persisted till hatching.
Conclusions:
Ethanol vapour exposure may lead to ventricular septal defect.
