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Specific craniofacial cartilage dysmorphogenesis coincides with a loss of dlx gene expression in retinoic acid-treated zebrafish embryos
Treatments of zebrafish embryos with retinoic acid (RA), a substance known to cause abnormal craniofacial cartilage development in other vertebrates, result in dose- and stage-dependent losses of dlx homeobox gene expression in several regions of the embryo, Dlx expression in neural crest cells migr...
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Published in: | Mechanisms of development 1997-01, Vol.61 (1-2), p.23-36 |
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container_title | Mechanisms of development |
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creator | Ellies, Debra L. Langille, Robert M. Martin, C. Cristofre Akimenko, Marie-Andrée Ekker, Marc |
description | Treatments of zebrafish embryos with retinoic acid (RA), a substance known to cause abnormal craniofacial cartilage development in other vertebrates, result in dose- and stage-dependent losses of dlx homeobox gene expression in several regions of the embryo, Dlx expression in neural crest cells migrating from the hindbrain and in the visceral arch primordia is particularly sensitive to RA treatment. The strongest effects are observed when RA is administered prior to or during crest cell migration but effects can also be observed if RA is applied when the cells have entered the primordia of the arches. Losses of dlx expression correlated either with the loss of cartilage elements originating from hindbrain neural crest cells or with abnormal morphology of these elements. Cartilage elements that originate from midbrain neural crest cells, which do not express dlx genes, are less affected. Taken together with the observation that the normal patterns of visceral arch dlx expression just prior to cartilage condensation resemble the morphology of the cartilage elements that are about to differentiate, our results suggest that dlx genes are an important part of a multi-step process in the development of a subset of craniofacial cartilage elements. |
doi_str_mv | 10.1016/S0925-4773(96)00616-8 |
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Cartilage elements that originate from midbrain neural crest cells, which do not express dlx genes, are less affected. 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Cristofre</creatorcontrib><creatorcontrib>Akimenko, Marie-Andrée</creatorcontrib><creatorcontrib>Ekker, Marc</creatorcontrib><title>Specific craniofacial cartilage dysmorphogenesis coincides with a loss of dlx gene expression in retinoic acid-treated zebrafish embryos</title><title>Mechanisms of development</title><addtitle>Mech Dev</addtitle><description>Treatments of zebrafish embryos with retinoic acid (RA), a substance known to cause abnormal craniofacial cartilage development in other vertebrates, result in dose- and stage-dependent losses of dlx homeobox gene expression in several regions of the embryo, Dlx expression in neural crest cells migrating from the hindbrain and in the visceral arch primordia is particularly sensitive to RA treatment. The strongest effects are observed when RA is administered prior to or during crest cell migration but effects can also be observed if RA is applied when the cells have entered the primordia of the arches. Losses of dlx expression correlated either with the loss of cartilage elements originating from hindbrain neural crest cells or with abnormal morphology of these elements. Cartilage elements that originate from midbrain neural crest cells, which do not express dlx genes, are less affected. 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Cristofre</creatorcontrib><creatorcontrib>Akimenko, Marie-Andrée</creatorcontrib><creatorcontrib>Ekker, Marc</creatorcontrib><collection>ScienceDirect Open Access Titles</collection><collection>Elsevier:ScienceDirect:Open Access</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Mechanisms of development</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ellies, Debra L.</au><au>Langille, Robert M.</au><au>Martin, C. Cristofre</au><au>Akimenko, Marie-Andrée</au><au>Ekker, Marc</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Specific craniofacial cartilage dysmorphogenesis coincides with a loss of dlx gene expression in retinoic acid-treated zebrafish embryos</atitle><jtitle>Mechanisms of development</jtitle><addtitle>Mech Dev</addtitle><date>1997-01</date><risdate>1997</risdate><volume>61</volume><issue>1-2</issue><spage>23</spage><epage>36</epage><pages>23-36</pages><issn>0925-4773</issn><eissn>1872-6356</eissn><notes>ObjectType-Article-1</notes><notes>SourceType-Scholarly Journals-1</notes><notes>ObjectType-Feature-2</notes><notes>content type line 23</notes><abstract>Treatments of zebrafish embryos with retinoic acid (RA), a substance known to cause abnormal craniofacial cartilage development in other vertebrates, result in dose- and stage-dependent losses of dlx homeobox gene expression in several regions of the embryo, Dlx expression in neural crest cells migrating from the hindbrain and in the visceral arch primordia is particularly sensitive to RA treatment. 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subjects | Animals Apoptosis Cartilage Cartilage - embryology Cell Differentiation Face - abnormalities Gene Expression Regulation, Developmental - drug effects Genes, Homeobox Head skeleton Homeobox genes Homeodomain Proteins - physiology In Situ Hybridization Neural creast Neural Crest - cytology Retinoic acid RNA, Messenger - genetics Time Factors Transcription Factors Tretinoin - pharmacology Zebrafish Zebrafish - embryology |
title | Specific craniofacial cartilage dysmorphogenesis coincides with a loss of dlx gene expression in retinoic acid-treated zebrafish embryos |
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