Linked Life Data

17620302

Source:http://linkedlifedata.com/resource/pubmed/id/17620302

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
6
pubmed:dateCreated
2007-11-16
pubmed:abstractText
Gnathostome teeth are one of the most promising models for developmental evolutionary studies, they are the most abundant organ in the fossil record and an excellent example of organogenesis. Teeth have a complex morphology and are restricted to the mouth in mammals, whereas actinopterygian teeth have a simple morphology and are found in several locations, notably on pharyngeal bones. Morphological and developmental similarities support the hypothesis that oral and pharyngeal teeth are serially homologous. Gene expression data from the mouse and some teleosts have shown that the gene families involved in pharyngeal odontogenesis are also involved in oral tooth formation, with the notable exception of the evx gene family. Here, we present a complete description of early odontogenesis in the medaka (Oryzias latipes), which has both oral and pharyngeal dentition. We show that oral and pharyngeal teeth share deep developmental similarities. In the medaka, like in the zebrafish, eve1 is the only evx gene expressed during odontogenesis. In each forming tooth, regardless of its location, eve1 transcription is activated in the placode, then becomes restricted to the inner dental epithelium and is activated in the dental mesenchyme during early differentiation, and finally ceases at late differentiation. Thus eve1 expression is not specific to pharyngeal teeth development as was previously suggested. Because it permits direct comparisons between oral and pharyngeal teeth by molecular, development and functional studies, the medaka is an excellent model to develop further insights into the evolution of odontogenesis in gnathostomes.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Dec
pubmed:issn
1552-5007
pubmed:author
pubmed:copyrightInfo
2007 Wiley-Liss, Inc
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
308
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
693-708
pubmed:dateRevised
2009-10-5
pubmed:meshHeading
pubmed:year
2007
pubmed:articleTitle
Development of oral and pharyngeal teeth in the medaka (Oryzias latipes): comparison of morphology and expression of eve1 gene.
pubmed:affiliation
Laboratoire Evolution Génome Spéciation, Gif-sur-Yvette cedex, France.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't