Related Experiment Videos
Decrease of parafollicular thyroid C-cells in experimental esophageal atresia: further evidence of a neural crest
L Martinez1, M De Ceano-Vivas, S Gonzalez-Reyes
1Department of Pediatric Surgery, Hospital Universitario, La Paz, P. de la Castellana 261, 28046 Madrid, Spain.
Pediatric Surgery International
|December 1, 2004
Summary
Adriamycin exposure in pregnant rats caused a significant reduction and abnormal distribution of thyroid C-cells in fetuses, indicating neural crest cell developmental defects. This rat model highlights potential C-cell anomalies in human esophageal atresia patients.
Area of Science:
- Developmental biology
- Endocrinology
- Teratology
Background:
- Esophageal atresia (EA) is frequently linked to malformations of neural crest (NC) origin.
- Thyroid C-cells are derived from NC, but their status in EA models is not well understood.
Purpose of the Study:
- To investigate the impact of Adriamycin-induced experimental EA on NC-derived thyroid C-cells in a rat model.
- To assess C-cell number and distribution in fetuses exposed to Adriamycin during gestation.
Main Methods:
- Pregnant rats were administered Adriamycin or vehicle on gestation days 8-9.
- Fetal thyroids were collected, sectioned, and stained for calcitonin (C-cells) using immunohistochemistry.
- C-cell counts and distribution were analyzed using computer-assisted image analysis.
Main Results:
- Adriamycin-exposed fetuses showed a dramatic reduction in thyroid C-cells compared to controls (p<0.001).
- The distribution pattern of C-cells within the thyroid gland was abnormal in the experimental group.
- Thyroid histology was otherwise similar between groups.
Conclusions:
- Adriamycin exposure during gestation leads to a significant decrease and abnormal migration of NC-derived thyroid C-cells.
- This study provides evidence for NC organogenesis dysregulation in EA pathogenesis.
- The findings suggest investigating subclinical NC-derived anomalies in human EA patients.