Isolation and characterization of a cholesterol crystallization promoter from human bile.
Isolation and characterization of a cholesterol crystallization promoter from human bile.
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从人胆汁中分离和表征胆固醇结晶促进剂。
DOI:
10.1016/0016-5085(93)90424-b
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发表时间:
1993
期刊:
影响因子:
29.4
通讯作者:
Holzbach,RT
中科院分区:
文献类型:
--
作者:
Abei,M;Kawczak,P;Nuutinen,H;Langnas,A;Svanvik,J;Holzbach,RT
Background:Recent studies on the pathogenesis of cholesterol gallstone disease have focused on the potential importance of an imbalance between biliary proteins having either inhibitory or promoting activities on nucleation and/or growth of cholesterol crystals as the initial stage in stone formation. The current study describes the purification and partial characterization of a 42-kilodalton biliary glycoprotein that shows concentration-dependent cholesterol crystallization-promoting activity.Methods:Chromatographie methods were used for separation and purification. Characterization steps included electrophoresis, deglycosylation, amino acid and carbohydrate analysis, and activity analysis by crystal growth assay.Results:The 42-kilodalton purified glycoprotein is an extensively glycosylated (37%) monomer with an acidic isoelectric point (pl < 4.1) that is probably based on the sialic acid content of the carbohydrate moiety. EnzymaticN-deglycosylation removes the carbohydrate moiety and inactivates the promoting activity. Furthermore, enzymatic proteolysis results in both its complete structural degradation and functional inactivation. Although the glycoprotein was isolated from normal human gallbladder biles, its presence in gallstone-associated samples is clearly shown.Conclusions:This report outlines biochemical features of a human biliary glycoprotein that may be of major pathophysiological significance in gallstone disease.
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影响因子:
29.4
作者:
M. Burnstein;R. G. Ilson;C. Petrunka;R. D. Taylor;S. Strasberg
通讯作者:
S. Strasberg
影响因子:
29.4
作者:
S. Gallinger;P. Robert;C. Harvey;C. Petrunka;R. G. Ilson;S. Strasberg
通讯作者:
S. Strasberg
DOI:
10.1016/0009-8981(87)90174-4
发表时间:
1987
期刊:
Clinica chimica acta; international journal of clinical chemistry
影响因子:
--
作者:
J. Drapers;A. Groen;J. P. Stout;C. Noordam;F. Hoek;P. Jansen;G. Tytgat
通讯作者:
G. Tytgat
影响因子:
6.5
作者:
Busch,N;Matiuck,N;Sahlin,S;Pillay,SP;Holzbach,RT
通讯作者:
Holzbach,RT
DOI:
10.1172/jci111204
发表时间:
1984
期刊:
The Journal of clinical investigation
影响因子:
--
作者:
Holzbach,RT;Kibe,A;Thiel,E;Howell,JH;Marsh,M;Hermann,RE
通讯作者:
Hermann,RE