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World J Gastroenterol. Jun 14, 2006; 12(22): 3471-3480
Published online Jun 14, 2006. doi: 10.3748/wjg.v12.i22.3471
Nervous and Neuroendocrine regulation of the pathophysiology of cholestasis and of biliary carcinogenesis
Marco Marzioni, Giammarco Fava, Antonio Benedetti
Marco Marzioni, Giammarco Fava, Antonio Benedetti, Department of Gastroenterology, Università Politecnica delle Marche, via Tronto 10, 60020 Ancona, Italy
Co-first-authors: Dr. Giammarco Fava
Co-correspondents: Dr. Giammarco Fava
Supported by the MIUR grant, No. 2003060137_004 and by the Fondazione Cariverona 2002 grant "Ambiente e sviluppo sostenibile" to Prof. Benedetti; by the "Premio S.I.G.E. 2004" to Dr. Marzioni; by the Università Politecnica delle Marche intramural grants ATBEN00205 to Professor. Benedetti and ATMAR01105 to Dr. Marzioni, by the “Premio S.I.G.E. 2006” to Dr Fava
Correspondence to: Dr. Marco Marzioni, Assistant Professor, Department of Gastroenterology, Università Politecnica delle Marche, Nuovo Polo Didattico, III piano, Via Tronto 10, 60020 Ancona, Italy. marco.marzioni@tele2.it
Telephone: +39-071-883885 Fax: +39-071-883886
Received: January 13, 2006
Revised: February 6, 2006
Accepted: February 18, 2006
Published online: June 14, 2006
Abstract

Cholangiocytes, the epithelial cells lining the biliary ducts, are the target cells in several liver diseases. Cholangiopathies and cholangiocarcinoma generate interest in many scientists since the genesis. The developing mechanisms, and the therapeutic tools of these diseases are still undefined. Several studies demonstrate that many hormones, neuropeptides and neurotransmitters regulate malignant and non-malignant cholangiocyte pathophysiology in the course of chronic biliary diseases. The aim of this review is to present the findings of several studies published in the recent years that contributed to clarifying the role of nervous and neuroendocrine regulation of the pathophysiologic events associated with cholestasis and cholangiocarcinoma development. This manuscript is organized into two parts. The first part offers an overview of the innervation of the liver and the origin of neuroendocrine hormones, neurotransmitters and neuropeptides affecting cholangiocyte function and metabolism. The first section also reviews the effects played by several neuroendocrine hormones and nervous system on cholangiocyte growth, survival and functional activity in the course of cholestasis. In the second section, we summarize the results of some studies describing the role of nervous system and neuroendocrine hormones in the regulation of malignant cholangiocyte growth.

Keywords: Cholangiocyte; Neuroendocrine hormones; Neurotransmitters; Neuropeptides; Cholestasis; Nervous System; Biliary carcinogenesis; Pathophysiology; Cholangiocarcinoma; Proliferation