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  • Title: [Nucleation time and lithogenic index in obese patients and in patients with cholecystolithiasis].
    Author: Janowitz P, Wechsler JG, Swobodnik W, Fischer S, Förstner J, Ditschuneit H.
    Journal: Z Gastroenterol; 1988 Dec; 26(12):750-4. PubMed ID: 3245253.
    Abstract:
    The gallbladder bile of obese patients without gallstones is supersaturated with cholesterol. The cholesterol saturation index (CSI, LI) of 27 obese patients was 1.32 +/- 0.2. The CSI of 24 normal weight gallstone patients was determined with 1.16 +/- 0.37 and is therefore not significantly different from CSI of obese stone free individuals. The supersaturated bile from obese patients does not accelerated the nucleation of cholesterol crystals. The nucleation time of obese persons was statistically significant longer (16.0 +/- 3.0 days) than in gallstones patients (6.0 +/- 0.78 days) (p less than 0.001). In 50% of the patients with gallstones cholesterol monohydratcrystals were present in the native gallbladder bilde, whereas such crystals are found in only 3.7% of the obese group. Liquid crystals occurred more frequently and in larger number in the bile of the obese patients. The stone forming potency of gallbladder bile can be estimated better by the determination of nucleation time and cholesterol crystals occurrence than by the calculation of the saturation index (CSI).
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