The role of bile acids in the pathogenesis of bowel diseases
Journal Title: Advances in Hygiene and Experimental Medicine - Year 2017, Vol 71, Issue
Abstract
Bile acids not only play a cardinal role in the digestion and absorption of fat and fat-soluble vitamins, but also significantly affect gastrointestinal motor, sensory and secretory functions, intestinal barrier permeability and the regulation of the inflammatory response. The results of recent studies have revealed complex interactions between bile acids and the gut microbiota. In addition, bile acids also play a role of signaling molecules regulating the activity of lipid and glucose metabolic pathways, as well as a role of ligands for transcription factors. Genetic factors associated with the regulation of bile acid synthesis, transport and action may significantly influence gastrointestinal function and predispose to diarrhea resulting from bile acid malabsorption. Methods used in the diagnosis of bile acid malabsorption include 75selenium-homotaurocholic acid test, serum C4 and fibroblast growth factor 19 (FGF19), as well as fecal bile acid levels. The paper presents the latest data on the role of bile acid in the pathogenesis of irritable bowel syndrome, inflammatory bowel diseases and colorectal cancer. Advances in the treatment of disturbances in bile acids absorption and synthesis are also presented. A better understanding of molecular mechanisms regulating bile acid action may have implication for colorectal cancer prevention.<br/><br/>
Authors and Affiliations
Magdalena Panek-Jeziorna, Agata Mulak
Role of hydrogen sulfide in the physiology of gastrointestinal tract and in the mechanism of gastroprotection
Hydrogen sulfide (H2S) is commonly known as a toxic gas with an unpleasant odor. However, in the human body it plays a role as a gaseous transmitter involved in the control of physiological processes. Studies published s...
Rola białek motorycznych cytoszkieletu w zakażeniu wirusowym
Cytoszkielet, zbudowany z filamentów aktynowych, mikrotubul i filamentów pośrednich, reguluje wiele procesów zachodzących w komórce, m.in. transport wewnątrzkomórkowy. Mikrofilamenty oraz mikrotubule są włóknami spolaryz...
Receptory hamujące komórek tucznych
Komórki tuczne odgrywają ważną rolę w przebiegu wielu różnych procesów fizjologicznych, a także biorą udział w obronie skierowanej przeciwko patogenom. Ponadto współuczestniczą w wielu procesach patologicznych, w tym w...
Paxillin and its role in the aging process of skin cells
Morphology of senescent cells is constantly changing at the molecular level, which in turn leads to disruption of their function. It is connected with reduced ability to synthesize extracellular matrix (ECM) and leads to...
Czynniki ryzyka rozwoju nowotworów złośliwych skóry u chorych po przeszczepieniu narządów
Nowotwory stały się drugą co do częstości przyczyną zgonów chorych po przeszczepieniu narządów. Wśród wszystkich nowotworów powstających de novo po transplantacji najczęstszymi są nowotwory skóry, z czego aż 95% stanowią...