Zhen-Peng Huang1, Hu Qiu2,3, Bao-Ping Yu2,3. 1. Department of Internal Medicine, College of Clinical Medicine, Xi'an Medical University Xi'an, Shannxi Province, P. R. China. 2. Department of Gastroenterology, Renmin Hospital of Wuhan University Wuhan, Hubei Province, P. R. China. 3. Key Laboratory of Hubei Province for Digestive System Diseases Wuhan, Hubei Province, P. R. China.
Abstract
BACKGROUND: Cholesterol gallstone is commonly observed in patients with gallbladder disorders. Interstitial cells of Cajal (ICCs) in the gallbladder are important for regulating gallbladder motility and have a close relationship with cholelithiasis. AIM: The aim of this study was to explore changes in the distribution of gallbladder ICCs during cholesterol gallstone formation. MATERIALS AND METHODS: Thirty guinea pigs were randomly divided into three groups: the control group and study groups. Animals in study groups were fed on high cholesterol diet for 4 weeks or 8 weeks. Animals in the control groups were fed on a standard diet for 8 weeks. Immunohistochemistry was performed to observe the shape, size, morphology, and numbers of ICCs from the neck of the gallbladder to the fundus of the gallbladder, and terminal deoxynucleotidyl transferase dUTP nick-end labeling was performed to detect apoptosis in ICCs from the upper part of the gallbladder to the lower part of the gallbladder. RESULTS: There were no differences in the shape, size, and morphology of the gallbladder ICCs in all groups. Cholesterol gallstones formed in guinea pigs fed on high cholesterol diet. The numbers of gallbladder ICCs were significantly decreased from the neck of the gallbladder to the fundus of the gallbladder, and gallbladder ICC apoptosis was significantly increased from the upper part of the gallbladder to the lower part of the gallbladder in both guinea pigs fed on high cholesterol diet (all P<0.05). CONCLUSION: Cholesterol gallstone formation reduced the density of gallbladder ICCs and increased the frequency of apoptotic gallbladder ICCs from the neck of the gallbladder to the fundus of the gallbladder, and these alterations may affect gallbladder ICC function. IJCEP
BACKGROUND:Cholesterolgallstone is commonly observed in patients with gallbladder disorders. Interstitial cells of Cajal (ICCs) in the gallbladder are important for regulating gallbladder motility and have a close relationship with cholelithiasis. AIM: The aim of this study was to explore changes in the distribution of gallbladder ICCs during cholesterolgallstone formation. MATERIALS AND METHODS: Thirty guinea pigs were randomly divided into three groups: the control group and study groups. Animals in study groups were fed on high cholesterol diet for 4 weeks or 8 weeks. Animals in the control groups were fed on a standard diet for 8 weeks. Immunohistochemistry was performed to observe the shape, size, morphology, and numbers of ICCs from the neck of the gallbladder to the fundus of the gallbladder, and terminal deoxynucleotidyl transferase dUTP nick-end labeling was performed to detect apoptosis in ICCs from the upper part of the gallbladder to the lower part of the gallbladder. RESULTS: There were no differences in the shape, size, and morphology of the gallbladder ICCs in all groups. Cholesterolgallstones formed in guinea pigs fed on high cholesterol diet. The numbers of gallbladder ICCs were significantly decreased from the neck of the gallbladder to the fundus of the gallbladder, and gallbladder ICC apoptosis was significantly increased from the upper part of the gallbladder to the lower part of the gallbladder in both guinea pigs fed on high cholesterol diet (all P<0.05). CONCLUSION:Cholesterolgallstone formation reduced the density of gallbladder ICCs and increased the frequency of apoptotic gallbladder ICCs from the neck of the gallbladder to the fundus of the gallbladder, and these alterations may affect gallbladder ICC function. IJCEP
Authors: Artur Pasternak; Mariusz Gajda; Krzysztof Gil; Andrzej Matyja; Krzysztof A Tomaszewski; Jerzy A Walocha; Jan Kulig; Piotr Thor Journal: Folia Histochem Cytobiol Date: 2012 Impact factor: 1.698
Authors: Omid Ahmadi; Martha de L Nicholson; Maree L Gould; Allan Mitchell; Mark D Stringer Journal: J Gastroenterol Hepatol Date: 2009-09-27 Impact factor: 4.029