title: Cellular homeostasis and repair in the mammalian liver.
abstract: The mammalian liver is one of the most regenerative tissues in the body, capable of fully recovering mass and function after a variety of injuries. This factor alone makes the liver unusual among mammalian tissues, but even more atypical is the widely held notion that the method of repair depends on the manner of injury. Specifically, the liver is believed to regenerate via replication of existing cells under certain conditions and via differentiation from specialized cells--so-called facultative stem cells--under others. Nevertheless, despite the liver's dramatic and unique regenerative response, the cellular and molecular features of liver homeostasis and regeneration are only now starting to come into relief. This review provides an overview of normal liver function and development and focuses on the evidence for and against various models of liver homeostasis and regeneration.
authors: Division of Gastroenterology, Department of Medicine, Abramson Family Cancer Research Institute, and Department of Cell and Developmental Biology, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania 19104; email: bstanger@exchange.upenn.edu.
authors: Ben Z
authors: BZ
authors: Stanger
mesh_terms: D000818:Animals; D002454:Cell Differentiation / Q000502:physiology; D049109:Cell Proliferation / Q000502:physiology; D022781:Hepatocytes / Q000166:cytology / Q000502:physiology; D006706:Homeostasis / Q000502:physiology*; D006801:Humans; D008099:Liver / Q000166:cytology* / Q000502:physiology*; D008107:Liver Diseases / Q000503:physiopathology; D008115:Liver Regeneration / Q000502:physiology*; D013234:Stem Cells / Q000166:cytology / Q000502:physiology
keywords: cellular reprogramming; homeostasis; injury; liver regeneration