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Published on: July 21, 2011
Prenatal development of the human Brunner's glands
K G Botros1, S L el-Hady, E A el-Mohandes
1Department of Anatomy and Histology, Faculty of Medicine, Mansoura University, Egypt.
Anatomischer Anzeiger
|January 1, 1990
Summary
Human Brunner
Area of Science:
- Human Embryology and Developmental Biology
- Gastrointestinal Histology
Background:
- Brunner's glands are crucial duodenal submucosal glands.
- Their prenatal development is essential for understanding duodenal physiology.
- Previous research has not fully detailed their early developmental stages.
Purpose of the Study:
- To investigate the prenatal development of human Brunner's glands.
- To characterize the histological and histochemical changes during development.
Main Methods:
- Histological examination of 23 human fetuses (10 weeks gestation to full-term).
- Histochemical staining using Periodic Acid Schiff (PAS) and Alcian Blue (AB) at pH 2.5.
- Analysis of glandular cell structure and secretory product characteristics.
Main Results:
- Initial budding observed at 12 weeks gestation.
- Glands developed as tubular downgrowths from duodenal crypts from 16 weeks.
- PAS-positive, diastase-resistant material detected early; AB staining negative throughout.
- Glands at birth resembled adult structure and staining.
Conclusions:
- Human Brunner's glands develop progressively from 12 weeks gestation.
- The secreted mucin is neutral mucopolysaccharide, confirmed by PAS and AB staining.
- Developmental stages show consistent histochemical properties from early formation to birth.
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