Effect of cholesterol nucleation-promoting activity on cholesterol solubilization in model bile.
نویسندگان
چکیده
منابع مشابه
Nucleation of cholesterol crystals from native bile and the effect
Nucleation time represents the terminal step in in vitro studies examining bile lithogenicity. Because of the concern that residual microcrystals, left after ultracentrifugation, may be responsible for the rapid nucleation time of gallbladder bile from patients with cholesterol gallstones, we have included a final filtration step. However, we found this procedure to considerably lengthen the nu...
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This study examined the ability of purified gallbladder mucin to accelerate the nucleation of cholesterol monohydrate crystals from the cholesterol-transporting particles in supersaturated model bile. Mixed lipid micelles and cholesterol-phosphatidylcholine vesicles in supersaturated model bile were separated by Sephadex G-200 column chromatography. Mixed lipid micelles prepared by column chrom...
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Supersaturation and rapid nucleation of cholesterol in bile are of key importance in the pathogenesis of cholesterol gallstones. While the effects of bile acids and phospholipids on cholesterol saturation of bile have been extensively studied, their influence on the cholesterol nucleation time has not been compared. We, therefore, investigated whether increases of bile acid or phospholipid conc...
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Patients with multiple cholesterol gallbladder stones have been found to be at a higher risk for the recurrence of gallstones after successful nonsurgical treatment than those with a solitary stone. Cholesterol gallstone recurrence, like primary gallstone formation, probably involves a triple defect with supersaturation, abnormally rapid nucleation of cholesterol in bile and altered gallbladder...
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سابقه و هدف: هیپرکلسترولمی یکی از فاکتورهای خطر بیماری‌های قلبی ـ عروقی است و افزایش کلسترول خون سلامت عمومی را تحت تاثیر قرار داده و میزان مرگ و میر ناشی از بیماری‌های قلبی ـ عروقی را افزایش می‌دهد. تغذیه با رژیم پرکلسترول باعث افزایش میزان LDL و همچنین کاهش فعالیت گیرنده‌های LDL در کبد می‌شود. اکسیداسیون لیپوپروتئین موجود در دیواره عروق، باعث پیشرفت بیماری آتروسکلروز می‌شود. شواهد چندی حاکی ...
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ژورنال
عنوان ژورنال: Journal of Lipid Research
سال: 1989
ISSN: 0022-2275
DOI: 10.1016/s0022-2275(20)38397-8