Document Detail


Regeneration of the gastric mucosa and its glands from stem cells.
MedLine Citation:
PMID:  19075658     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Mucous epithelia and their glands represent vital surfaces of the body which are topologically in direct contact and communicate with the environment. These highly specialized epithelia are protected by several lines of defence, such as mucous gels, regeneration and repair mechanisms, and acute inflammatory processes. Pathologically, chronic inflammation is associated with cancer. There are two different regeneration and repair mechanisms of mucous epithelia known which also cover different time scales. First, rapid repair of superficial lesions via cell migration - a process called restitution - starts within minutes. Second, continuous regeneration via differentiation and proliferation of stem and progenitor cells is responsible for self-renewal within days to months. This article reviews molecular mechanisms responsible for the regeneration of various mucous epithelia with a special emphasis on the complex situation in the gastric mucosa and its glands. For example, the two gross types of gastric units, i.e., the fundic and the antral types, respectively, differ largely by their histology, regeneration rates and regeneration profiles. Currently, a rough picture is emerging on the molecular mechanisms behind including the characterization of different somatic stem cell types and stem cell signaling pathways. Furthermore, dysregulated regeneration is well known now as a cause of various metaplasias (reversible remodeling of epithelia) and cancer, with chronic inflammation playing a key role. Understanding the molecular mechanisms of regeneration and their dysregulation is essential for the development of new strategies for cancer prevention and therapy and it will also promote the emerging field of regenerative medicine and tissue engineering.
Authors:
Werner Hoffmann
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Current medicinal chemistry     Volume:  15     ISSN:  0929-8673     ISO Abbreviation:  Curr. Med. Chem.     Publication Date:  2008  
Date Detail:
Created Date:  2008-12-16     Completed Date:  2009-02-24     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9440157     Medline TA:  Curr Med Chem     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  3133-44     Citation Subset:  IM    
Affiliation:
Institute of Molecular Biology and Medical Chemistry, Otto-von-Guericke-University Magdeburg, Leipziger Str. 44, D-39120 Magdeburg, Germany. werner.hoffmann@med.ovgu.de
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MeSH Terms
Descriptor/Qualifier:
Animals
Epithelial Cells / physiology
Gastric Mucosa / growth & development*
Humans
Regeneration / physiology*
Regenerative Medicine*
Stem Cell Transplantation*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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