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Updated: Feb 6, 2026

Neural Tube Closure in Mouse Whole Embryo Culture
Published on: October 21, 2011
Developing a link between toxicants, claudins and neural tube defects.
Enrique Gamero-Estevez1, Amanda I Baumholtz1, Aimee K Ryan2
1Department of Human Genetics, McGill University, Canada; The Research Institute of the McGill University Health Centre, Montréal, Québec, Canada.
Environmental toxins and toxicants can cause neural tube defects by disrupting claudin proteins, which are crucial for neural tube closure. This review explores this molecular link.
Area of Science:
- Environmental Health
- Developmental Biology
- Toxicology
Background:
- Neural tube defects (NTDs) are linked to environmental factors like toxins and toxicants.
- Claudin proteins, part of tight junctions, are essential for neural tube development.
- Environmental contaminants can interfere with cellular structures and functions.
Purpose of the Study:
- To review the evidence linking environmental toxins and toxicants to neural tube defects.
- To explore the role of claudin proteins in the molecular mechanisms of NTDs.
- To propose a hypothesis on how environmental factors impact neural tube closure via claudins.
Main Methods:
- Literature review of existing studies on environmental factors and NTDs.
- Analysis of research on claudin protein function in epithelial development.
- Examination of molecular data on toxicant effects on tight junctions.
Main Results:
- Established link between environmental toxins/toxicants and NTDs.
- Claudins are critical for the transformation of the neural plate into a closed tube.
- Toxicants disrupt claudin expression and tight junction integrity.
Conclusions:
- Environmental toxins and toxicants may cause NTDs by affecting claudin proteins.
- Claudin dysfunction is a key molecular pathway for environmentally induced NTDs.
- Further research is needed to fully elucidate this relationship.
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