Related Experiment Video
Updated: Jun 13, 2026

Testing Epithelial Permeability in Fetal Tissue-Derived Enteroids
Published on: June 16, 2022
Ultrastructural aspects of enterocyte defects in infancy and childhood
Theodore C Iancu1, Irena Manov
1Pediatric Research and Electron Microscopy Unit, Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel. tiancu@tx.technion.ac.il
Abstract:
Although there has been substantial progress in the identification of diarrheal diseases in infancy and childhood, electron microscopy may be still required for establishing diagnosis, staging, and response to therapy. This review describes severe conditions in which histopathologic examination alone cannot provide a firm diagnosis needed for therapeutic decisions. Microvillus inclusion disease, in its several variants, typifies this category. In certain forms of congenital disorders of glycosylation with gastrointestinal involvement, electron microscopic diagnosis is helpful. Among disorders due to abnormal immune-mediated reactions, celiac disease and cow's milk protein intolerance show fine structural changes of both diagnostic and staging value. Likewise, protein-losing enteropathies, including lymphangectasia, reveal information on the nature and extent of intestinal involvement.
Insights
Electron microscopy is crucial for diagnosing severe pediatric diarrheal diseases when standard histology is insufficient. It aids in identifying conditions like microvillus inclusion disease and guiding therapeutic decisions.
Area of Science:
- Pediatric Gastroenterology
- Cell Biology
- Diagnostic Pathology
Background:
- Diarrheal diseases in children are common, but diagnosis can be challenging.
- Histopathology alone may not suffice for severe or complex cases.
- Electron microscopy offers higher resolution for cellular-level examination.
Purpose of the Study:
- To review severe pediatric gastrointestinal conditions requiring electron microscopy for diagnosis.
- To highlight the role of electron microscopy in therapeutic decision-making.
- To discuss specific diseases where electron microscopy is invaluable.
Main Methods:
- Review of literature on electron microscopy in pediatric diarrheal diseases.
- Analysis of conditions where histopathology is inconclusive.
- Focus on specific disease categories and their ultrastructural features.
Main Results:
- Electron microscopy is essential for diagnosing microvillus inclusion disease variants.
- It aids in identifying gastrointestinal involvement in congenital disorders of glycosylation.
- Fine structural changes in celiac disease and cow's milk protein intolerance are diagnostically significant.
- Electron microscopy provides insights into protein-losing enteropathies like lymphangectasia.
Conclusions:
- Electron microscopy is indispensable for diagnosing and staging specific severe pediatric diarrheal diseases.
- It provides critical diagnostic information when histopathology is insufficient.
- This technique guides therapeutic strategies for complex gastrointestinal disorders.
Related Concept Videos
Histology of the Small Intestine
The intestinal lining features transverse folds called circular folds, each housing fingerlike projections known as intestinal villi. These villi are covered by a layer of simple columnar epithelium, also referred to as...
Renewal of Intestinal Stem Cells
Inflammatory Bowel Disease II: Ulcerative Colitis
Absorption of Nutrients
Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
Inborn Errors of Metabolism
The Early Endosome: Endocytosis of Transferrin

