EXTRACELLULAR-MATRIX PROTEINS IN HUMAN BILE AND GALLSTONES

被引:0
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作者
LOHR, M
SCHERER, R
SCHNEIDER, HT
MAY, A
HAHN, EG
ZIRNGIBL, H
KLOPPEL, G
ELL, C
机构
关键词
BILE; GALLSTONE FORMATION; EXTRACELLULAR MATRIX PROTEINS; HYALURONIC ACID;
D O I
暂无
中图分类号
R57 [消化系及腹部疾病];
学科分类号
摘要
Objective: To investigate the presence of extracellular matrix (ECM) proteins in human bile and gallstones and to determine whether they play a role in gallstone formation. Methods: ECM components [procollagen-lll-peptide (P-III-P), laminin, and hyaluronic acid] in bile from patients with (n=22) and without (n=6) gallstone disease were investigated by immunoassay. Bile, gallstones, and serum were assayed for extracellular matrix components in an additional 19 patients with gallstone disease and gallstones were analysed in a third set of 26 patients. The expression of hyaluronic acid synthetase in bile duct and gall bladder epithelia was investigated by immunocytochemistry. Results: Hyaluronic acid levels were significantly elevated in hepatic and gall bladder bile, but not in the serum of patients with compared with those without gallstone disease (137 versus 81 mu g/l, respectively; P<0.05). No differences were found between hepatic and gall bladder bile. Procollagen-III-peptide and laminin were detected in the hepatic bile of patients in both groups. Laminin levels were higher in gall bladder bile than in serum in all patients and measurable amounts of hyaluronic acid were found in gallstones. The amount of hyaluronic acid was inversely correlated to the volume of the gallstone, i.e., the smallest gallstones contained the highest levels of hyaluronic acid. No procollagen-III-peptide or laminin was found in the gallstones. Immunocytochemistry of the epithelial cells of bile duct and gall bladder mucosa stained strongly for hyaluronic acid synthetase. Conclusions: Hyaluronic acid as a progenitor of ECM can be detected in bile and is significantly elevated in patients with gallstone disease. Small gallstones contain more hyaluronic acid than large stones, suggesting that hyaluronic acid may play a role in gallstone formation, particularly since it is produced by the epithelial lining of bile ducts and is found in gall bladder mucosa.
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页码:135 / 140
页数:6
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