Enrichment of bile with tauroursodeoxycholic acid and biliary cholesterol saturation in hamsters

1982 ◽  
Vol 243 (5) ◽  
pp. G424-G427
Author(s):  
B. Handelsman ◽  
G. Bonorris ◽  
J. W. Marks ◽  
L. J. Schoenfield
Keyword(s):  
Ursodeoxycholic Acid ◽  
Saturation Index ◽  
Saturation Indices ◽  
Biliary Cholesterol ◽  
Molar Percentage ◽  
Lithogenic Diet ◽  
Cholesterol Saturation ◽  
Before And After ◽  
Ketamine Anesthesia ◽  
Lower Saturation

Three groups of golden Syrian hamsters were fed equimolar amounts of taurine-conjugated ursodeoxycholic acid (TUDCA) or unconjugated ursodeoxycholic acid (UDCA) with or without excess taurine for 2 wk. They also received a lithogenic diet composed of standard rodent chow containing ethynylestradiol and increased cholesterol. Bile was obtained from the gallbladder after ketamine anesthesia and analyzed for biliary lipids. The percentage of biliary UDCA was higher with TUDCA (38.5 +/- 3.7) than with UDCA plus taurine (26.5 +/- 2.0, P less than 0.01). The glycine-to-taurine ratio of biliary UDCA conjugates was lower with TUDCA (0.9 +/- 0.1) than with UDCA plus taurine (2.1 +/- 0.2, P less than 0.01) and was highest with UDCA without taurine (4.1 +/- 0.1, P less than 0.01). Biliary cholesterol (molar percentage) and the cholesterol saturation indices with or without correction for UDCA-rich bile were significantly lower with TUDCA than with unconjugated UDCA with or without added taurine. In conclusion, administration for 2 wk of TUDCA, compared with an equimolar amount of unconjugated UDCA plus taurine, produced in the bile of hamsters a higher percentage of UDCA, a lower glycine-to-taurine ratio of UDCA conjugates, and a lower saturation index before and after adjustment for UDCA-rich bile.

Anti-cholelithogenic effect of dietary tender cluster beans (Cyamopsis tetragonoloba) on the formation of cholesterol gallstones in mice

2014 ◽  
Vol 39 (2) ◽  
pp. 152-157 ◽  
Author(s):  
Chikkanna K. Raghavendra ◽  
Krihnapura Srinivasan
Keyword(s):  
Cholesterol Gallstone ◽  
Saturation Index ◽  
Liver Cholesterol ◽  
Cyamopsis Tetragonoloba ◽  
Cholesterol Gallstones ◽  
Lithogenic Diet ◽  
Cholesterol Saturation ◽  
Freeze Dried ◽  
Phospholipid Ratio ◽  
Cholesterol Saturation Index

Providing a lithogenic diet that contains 0.5% cholesterol to experimental mice for 10 weeks resulted in cholesterol supersaturation in gallbladder bile, which induced the formation of cholesterol gallstones. In this study, to evaluate the anti-cholelithogenic potential of dietary tender cluster bean, a freeze-dried powder of the test legume was included in the lithogenic diet at 5%, 10%, and 15%. Dietary cluster beans reduced the cholesterol gallstone incidence by 43%, 46%, and 58% at the respective doses. Dietary cluster beans markedly reduced biliary cholesterol and, hence, the cholesterol saturation index. This was corroborated by the beneficial modification of the cholesterol/phospholipid ratio and the cholesterol/bile acid ratio in the bile. Dietary cluster beans countered the alterations in serum and liver cholesterol and lipid profiles caused by the lithogenic diet. Thus, dietary tender cluster beans exerted an anti-cholelithogenic influence by decreasing cholesterol hypersecretion into bile and, hence, the cholesterol saturation index, decreasing the formation of lithogenic bile in experimental mice.

scholarly journals Stability of Human Gallbladder Bile: Effect of Freezing

2001 ◽  
Vol 15 (6) ◽  
pp. 363-366 ◽  
Author(s):  
Paul Janowitz ◽  
Richard Mason ◽  
Wolfgang Kratzer
Keyword(s):  
Saturation Index ◽  
Gallbladder Bile ◽  
Needle Puncture ◽  
Nucleation Time ◽  
Human Gallbladder ◽  
Fine Needle ◽  
Cholesterol Saturation ◽  
Before And After ◽  
Cholesterol Saturation Index ◽  
Fine Needle Puncture

In the present study, the stability of the most essential biliary parameters of human gallbladder bile at -18°C was examined over several months. In 12 patients with gallstone disease (10 female, two male; 52.1±13.3 years of age), bile was obtained through fine needle puncture of the gallbladder under local anesthetic. The concentrations of total lipids, cholesterol, phospholipids and bile acids, and the cholesterol saturation index and crystal appearance time were determined before and after freezing over a mean period of 4.38±2.9 months. Gallbladder bile obtained by fine needle puncture has proved to be of excellent quality. The total lipid concentration was unchanged before (8.30±4.16 g/dL) and after freezing (9.16±4.54 g/dL, P=0.6027). The biliary cholesterol, phospholipids and bile acid concentrations, and cholesterol saturation index showed no statistically significant differences before and after freezing. A significant difference arises in the context of subdivision of the group to the nucleation time. Before freezing, most patients had a nucleation time between five and eight days, which shortened to between one and four days after thawing (P=0.0100). The authors conclude that, with the exception of the nucleation time, human gallbladder bile can be stored at -18°C for four months with stability of major lipid components.

Effect of Phalloidin on Biliary Lipid Secretion in Rats

1980 ◽  
Vol 58 (6) ◽  
pp. 545-548 ◽  
Author(s):  
Marta Dubin ◽  
S. Erlinger
Keyword(s):  
Bile Acid ◽  
Saturation Index ◽  
Circumstantial Evidence ◽  
Cholesterol Concentration ◽  
Biliary Lipid ◽  
Biliary Cholesterol ◽  
Lipid Secretion ◽  
Cholesterol Saturation ◽  
Cholesterol Saturation Index ◽  
Cholesterol Secretion

1. The effect of phalloidin on bile acid, phospholipid and cholesterol secretion into bile was studied in rats with bile fistulae. 2. Phalloidin, when given for 7 days, induced a significant decrease in biliary cholesterol concentration and cholesterol saturation index. Bile acid and phospholipid concentration in bile remained unchanged. This effect was less marked in animals receiving the drug for 3 days, and not detectable in animals treated for 1 day. 3. These results provide circumstantial evidence for the hypothesis that microfilament dysfunction may lead to alterations in cholesterol secretion into bile.

A Combination of Chenodeoxycholic Acid and Ursodeoxycholic Acid is more Effective than Either Alone in Reducing Biliary Cholesterol Saturation

Hepatology ◽  
2007 ◽  
Vol 2 (3) ◽  
pp. 334S-339S ◽  
Author(s):  
Mauro Podda ◽  
Massimo Zuin ◽  
Maria L. Dioguardi ◽  
Susanna Festorazzi ◽  
Nicola Dioguardi
Keyword(s):  
Ursodeoxycholic Acid ◽  
Chenodeoxycholic Acid ◽  
Biliary Cholesterol ◽  
Cholesterol Saturation

Effect of dietary fat composition on biliary cholesterol saturation index in dogs

1993 ◽  
Vol 101 (1) ◽  
pp. 3-7 ◽  
Author(s):  
M. C. Ballesta ◽  
E. Martinez-victoria ◽  
M. Manas ◽  
I. Seiquer ◽  
J. R. Huertas ◽  
...  
Keyword(s):  
Dietary Fat ◽  
Saturation Index ◽  
Biliary Cholesterol ◽  
Cholesterol Saturation ◽  
Cholesterol Saturation Index ◽  
Fat Composition
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