Progress in the study on the composition and formation mechanism of gallstone  

作　　者：孙颖 杨展澜 申国荣 周勇 周孝思 吴瑾光 徐光宪 

出　　处：《Science China Chemistry》2001年第5期449-456,共8页中国科学（化学英文版）

基　　金：the National Natural Science Foundation of China (Grant Nos. 29671002, 39730160 and 20023005) and the State Key Project for Fundamental Research of MOST (Grant No. G1998061370).

摘　　要：Our serial studies from {dy1970}s on chemical composition, structure determination and formation mechanism of gallstones were reviewed. The chemical component investigation of brown-pigment gallstone demonstrated that it consists of macromolecules such as proteins, glycoproteins, polysaccharides, bilirubin polymers and pigment polymers, and biomolecules such as cholesterol, bile salts, calcium salts of carbonate, phosphate, fatty acids and bilirubinate as well as various metal ions. The binding of metal ions with bile salts and bilirubin plays important roles in gallstone formation, i.e., calcium bilirubinate complex is the major constitute of brown-pigment gallstones, and copper bilirubinate complex is critical in the black color appearance of black-pigment gallstone. The cross section of many gallstones exhibits a concentric ring structure composed of various small particles with a fractal character. This is nonlinear phenomenon in gallstone formation. Atypical model system of metal ions-deoxycholate (or cholate)-gel was chosen to mimic an in vitro pattern formation system. The experimental results suggested that a nonlinear scientific concept should be considered in understanding gallstone formation. Minor changes in the chemical composition and/or the microenvironment may lead to very different precipitate patterns with a variety of shapes, colors, appearances, and structures. A new model was suggested that periodical templets of periodical and fractal patterns were formed in the initial stage, then the spatio-temporal patterns grew gradually on it. Furthermore, the interaction between divalent metal ions and bile saltsin vitro was investigated, and the results indicated that non-stoichiometric M(DC)2-NaDC mixed complexes with mixed micelles structure can be formed in physiological condition.Our serial studies from 1970s on chemical composition, structure determination and formation mechanism of gallstones were reviewed. The chemical component investigation of brown-pigment gallstone demonstrated that it consists of macromolecules such as proteins, glyco-proteins, polysaccharides, bilirubin polymers and pigment polymers, and biomolecules such as cholesterol, bile salts, calcium salts of carbonate, phosphate, fatty acids and bilirubinate as well as various metal ions. The binding of metal ions with bile salts and bilirubin plays important roles in gallstone formation, i.e., calcium bilirubinate complex is the major constitute of brown-pigment gallstones, and copper bilirubinate complex is critical in the black color appearance of black-pigment gallstone. The cross section of many gallstones exhibits a concentric ring structure composed of various small particles with a fractal character. This is nonlinear phenomenon in gallstone formation. A typical model system of metal ions-deoxycholate (or

关 键 词：GALLSTONE mechanism of formation periodic precipitation fractal pattern bile salts 

分 类 号：R363[医药卫生—病理学]