Abstract
Ultrastructural alterations of pancreatic tissues in growing pigs caused by surgical ligation of the main pancreatic duct are described. Five animals aged 6 to 7 weeks were operated on and necropsied 2, 6 or 8 weeks later. In addition, 3 pigs that were sham-operated served as controls. Obstruction of the ducts caused progressive luminal dilatations and rupture of intercellular connections of the epithelium followed by destruction and atrophy of acinar parenchyma and proliferations of immature ductular epithelial cells free from zymogen granules.
Keywords: pancreatic duct ligation, exocrine pancreatic insufficiency, experimental chronic pancreatitis, porcine pancreas diseases
Sammanfattning
Morfologiska alterationer i pankreasvävnaden beskrivs hos växande svin med ligerad pankreasgång. Fem försöksdjur, 6–7 veckor gamla, opererades och obducerades 2, 6 och 8 veckor senare. Som kontroll användes 3 sham-opererade svin. Obstruktionen förorsakade progressiv dilatation av den ligerade pankreasgången och intercellulära rupturer i epitelet. Den akinära vävnaden atrofierades och ersattes med proliferationer av immatura epitelceller utan zymogengranula.
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Acknowledgements
Electron microscopial studies were performed in the Laboratory of Electron Microscopy, College of Veterinary Medicine, Helsinki.
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