Abstract:
:Ginseng is one of the most popular herbal remedies. Studies were performed in anaesthetized rats to examine the effect of ginseng on bile secretion. Male Sprague-Dawley rats were anaesthetized with intraperitoneal (i.p.) urethane (1.25 g kg(-1)) and equipped with biliary cannulas inserted into the bile duct through the sphincter of Oddi. Rats were treated with a single i.p. injection of ginseng at 25, 50 or 100 mg kg(-1) (1 ml(-1)) 30 min before bile collection; the control group received i.p. saline only at 1 ml(-1)volume. The effect of multiple doses of ginseng on bile volume and biliary composition was also studied. Ginseng was given in the higher dose of 100 mg kg(-1) (1 ml(-1), i.p.) every 12 hours for 2 days. Bile was collected in 15 min fractions for 90 min. Bile flow (bile-pancreatic juice), biliary excretion of total proteins, cholesterol and total lipids were measured. The single administration of different doses (25, 50 and 100 mg kg (-1)) of ginseng reduced basal bile secretion in a dose-dependent manner. Single-dose administration of ginseng at 100 mg kg(-1) caused 32.9% reduction in basal bile flow. Meanwhile, mean basal bile flow was reduced by 15.1% in rats treated with multiple doses of ginseng at 100 mg kg(-1) for two days. Biliary protein concentrations were significantly increased after single- or multiple-dose administration of ginseng, but protein output was only significantly increased (33%) in rats treated with ginseng (100 mg kg(-1)) twice a day for 2 days. Biliary total lipids and cholesterol concentration and outputs were significantly reduced after single or multiple administration of ginseng. In conclusion, administration of ginseng in the rat resulted in a reduction of bile flow and in bile secretion of total lipids and cholesterol, while it increased the secretion of proteins in a dose-dependent manner. The precise mechanisms underlying these effects remain to be elucidated. The findings indicate the need for clinical trials for the effect of this herb on bile composition and flow in man in view of a possible modulatory effect for the herb on gallstone formation.
journal_name
Pharmacol Resjournal_title
Pharmacological researchauthors
Salam OM,Nada SA,Arbid MSdoi
10.1006/phrs.2002.0961keywords:
subject
Has Abstractpub_date
2002-04-01 00:00:00pages
349-53issue
4eissn
1043-6618issn
1096-1186pii
S1043661802909618journal_volume
45pub_type
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