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Effects of Sodium Nitrite on Neural Tube Development in Early-Stage Chick Embryos
Ezgi Akar1, Eylem Burcu Kahraman Ozlu1, Dila Sener Akcora2
1Haydarpasa Numune Training and Research Hospital, Department of Neurosurgery, Istanbul, Türkiye.
Turkish Neurosurgery
|August 1, 2026
Summary
Sodium nitrite exposure caused neural tube defects in chick embryos. Both low and high doses led to significant spinal cord development issues, indicating potential embryotoxicity.
Area of Science:
- Developmental biology
- Toxicology
- Embryology
Background:
- Spinal cord development is crucial for embryonic health.
- Understanding environmental impacts on embryogenesis is vital.
Purpose of the Study:
- To assess the impact of sodium nitrite on early chick embryo spinal cord development.
- To determine dose-dependent effects of sodium nitrite exposure.
Main Methods:
- Fertile Leghorn-type eggs were incubated and divided into control (saline) and sodium nitrite (low and high dose) groups.
- Embryonic development was examined after 72 hours of incubation.
- Neural tube morphology and other developmental parameters were microscopically evaluated.
Main Results:
- Control embryos showed normal neural tube closure and development.
- Sodium nitrite exposure significantly increased the incidence of neural tube defects in both low- and high-dose groups.
- No significant difference in defect incidence was found between low- and high-dose sodium nitrite groups.
Conclusions:
- Sodium nitrite exposure induces neural tube defects in chick embryos.
- Both tested doses of sodium nitrite demonstrate embryotoxic potential.
- Further research is warranted to understand the mechanisms of sodium nitrite embryotoxicity.
