Document Detail


Insights into the establishment of left-right asymmetries in vertebrates.
MedLine Citation:
PMID:  18546333     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The body-plan of vertebrates, while exteriorly essentially symmetric along its medio-lateral plane, displays numerous left-right differences in the disposition and placement of internal organs. Such left-right asymmetries, established during embryogenesis, are controlled by complex epigenetic and genetic cascades that impart laterality information to the different embryo structures and organ primordia. A key and evolutionarily conserved feature of these information cascades among vertebrate embryos is the left-sided transfer of information from the node to the lateral plate mesoderm during early somitogenesis stages. We review here recent evidence concerning the mechanisms that regulate the laterality of such transfer. Furthermore, we propose a model of left-right axis specification that underscores the role of the node as an integrator of laterality information and the evolutionary conservation of the mechanisms that convey such information to and from the node.
Authors:
Angel Raya; Juan Carlos Izpisúa Belmonte
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Review    
Journal Detail:
Title:  Birth defects research. Part C, Embryo today : reviews     Volume:  84     ISSN:  1542-9768     ISO Abbreviation:  Birth Defects Res. C Embryo Today     Publication Date:  2008 Jun 
Date Detail:
Created Date:  2008-06-24     Completed Date:  2008-08-06     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101167665     Medline TA:  Birth Defects Res C Embryo Today     Country:  United States    
Other Details:
Languages:  eng     Pagination:  81-94     Citation Subset:  IM    
Copyright Information:
(c) 2008 Wiley-Liss, Inc.
Affiliation:
Center of Regenerative Medicine in Barcelona, Dr. Aiguader 88, 08029 Barcelona, Spain.
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MeSH Terms
Descriptor/Qualifier:
Animals
Body Patterning / physiology
Embryo, Mammalian / physiology
Embryo, Nonmammalian / physiology
Embryonic Development
Functional Laterality / physiology*
Mammals / embryology*,  genetics
Mesoderm
Morphogenesis
Species Specificity
Vertebrates / embryology*,  genetics

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


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