Giuseppe Calamita, Domenico Ferri, Patrizia Gena, Giuseppa E Liquori, Raúl A Marinelli, Giuliano Meyer, Piero Portincasa, Maria Svelto
{"title":"Water transport into bile and role in bile formation.","authors":"Giuseppe Calamita, Domenico Ferri, Patrizia Gena, Giuseppa E Liquori, Raúl A Marinelli, Giuliano Meyer, Piero Portincasa, Maria Svelto","doi":"10.2174/1568008054064850","DOIUrl":null,"url":null,"abstract":"<p><p>Formation of bile and generation of bile flow are driven by the active secretion of bile salts (BS), lipids and electrolytes into the canalicular and bile duct lumens followed by the osmotic movement of water. Although the transporting proteins involved in solute secretion have been cloned and their coordinated interplay defined both in health and disease, boosted by the discovery of the aquaporin water channels, only recently has considerable attention been addressed to the mechanism by which water, the major component of bile (> 95%), moves across the hepatobiliary epithelia. This review summarizes the novel acquisitions in liver membrane water transport and functional participation of aquaporin water channels in multiple aspects of hepatobiliary fluid balance. Emerging evidences suggesting involvement of aquaporins in the metabolic homeostasis of the hepatobiliary tract are also discussed.</p>","PeriodicalId":84524,"journal":{"name":"Current drug targets. Immune, endocrine and metabolic disorders","volume":"5 2","pages":"137-42"},"PeriodicalIF":0.0000,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.2174/1568008054064850","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Current drug targets. Immune, endocrine and metabolic disorders","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2174/1568008054064850","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Formation of bile and generation of bile flow are driven by the active secretion of bile salts (BS), lipids and electrolytes into the canalicular and bile duct lumens followed by the osmotic movement of water. Although the transporting proteins involved in solute secretion have been cloned and their coordinated interplay defined both in health and disease, boosted by the discovery of the aquaporin water channels, only recently has considerable attention been addressed to the mechanism by which water, the major component of bile (> 95%), moves across the hepatobiliary epithelia. This review summarizes the novel acquisitions in liver membrane water transport and functional participation of aquaporin water channels in multiple aspects of hepatobiliary fluid balance. Emerging evidences suggesting involvement of aquaporins in the metabolic homeostasis of the hepatobiliary tract are also discussed.