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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

The effects of amiloride on biliary calcium and cholesterol gallstone formation.

Recent studies indicate that gallbladder absorption increases during the early stages of experimentally-induced cholesterol gallstone formation. The purpose of the present study was to ascertain whether pharmacologic inhibition of gallbladder ion transport and absorption reduces the incidence of experimentally-induced cholesterol gallstones. Prairie dogs were fed either a control chow or a 1.2% cholesterol-enriched chow for 15 days. One group of cholesterol-fed animals received saline via an orogastric tube; another group received amiloride, a drug known to inhibit in vitro ion transport in the prairie dog gallbladder. The incidence of gallstones in cholesterol-fed animals was reduced from 83% to 13% (p less than 0.025) when the animals were treated with amiloride; this occurred despite a cholesterol-saturation index comparable to that observed in gallstone animals. Additionally, although biliary calcium decreased in the gallbladder, hepatic bile did not in the amiloride-treated animals. These data provide further evidence that altered gallbladder absorption and increased biliary calcium are important factors in the pathogenesis of cholesterol gallstones.[1]


  1. The effects of amiloride on biliary calcium and cholesterol gallstone formation. Strichartz, S.D., Abedin, M.Z., Abdou, M.S., Roslyn, J.J. Ann. Surg. (1989) [Pubmed]
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