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Ultrastructural aspects of human gallbladder epithelial cells in cholelithiasis: production of anionic mucus
J Gilloteaux1, S Karkare, T R Kelly
1Department of Anatomy, Northeastern Ohio Universities College of Medicine, Rootstown 44272, USA.
Insights
Gallbladder surface epithelium in cholecystitis shows abnormal mucus production and cell changes. Ultrastructural study reveals hypersecretory activity and unique cellular alterations in gallbladder inflammation.
Area of Science:
- Gastroenterology
- Cell Biology
- Pathology
Background:
- Cholecystitis, or gallbladder inflammation, affects the organ's surface epithelium.
- Understanding cellular changes is crucial for diagnosing and managing gallbladder disease.
Purpose of the Study:
- To ultrastructurally investigate the surface epithelium of gallbladders with cholecystitis.
- To characterize the specific changes in mucous granules and cell morphology.
Main Methods:
- Ultrastructural examination of gallbladder surface epithelium.
- Analysis of 10 cases diagnosed with cholecystitis from 28 elective cholecystectomies.
Main Results:
- Gallbladder epithelium in cholecystitis exhibited numerous apical mucous granules and bulging apices.
- Observed hyperproduction of neutral secretory granules with proteinaceous spherules.
- Identified production of anionic, osmiophilic secretory mucus.
- Noted bizarre surface appendages resembling primitive cilia and epithelial excrescences.
Conclusions:
- The surface epithelium in cholecystitis undergoes significant ultrastructural alterations, including altered mucus production and formation of novel cellular structures.
- These findings provide detailed insights into the cellular pathology of gallbladder inflammation.
Abstract:
The surface epithelium of 28 gallbladders removed during elective cholecystectomies and pathology collection was studied ultrastructurally. Focusing on 10 of the 28 cases that were diagnosed as cholecystitis, we found that the epithelium displayed numerous apical mucous granules and bulging apical apices. Mucous granule changes included 1) hyperproduction of secretory granules of neutral type containing an electron-dense proteinaceous spherule, similar to that described in other mucus-producing glands of the digestive system, and 2) production of anionic, osmiophilic secretory mucus. Other alterations of the surface epithelial cells included the production of bizarre surface appendages resembling primitive cilia without axoneme and epithelial excrescences.
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