Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2001-2-19
pubmed:abstractText
The role of the apical ectodermal ridge and of fibroblast growth factors FGF-2 and FGF-4 and of the insulin-like growth factor I (IGF-I) in the control of the migration of epidermal melanoblasts was investigated using quail-chicken chimeras. Wing buds of a strain of unpigmented chicken were microsurgically modified in several ways (ablation, displacement or implantation of additional apical ectodermal ridges, implantation of grafts devoid of apical ectodermal ridges, ectopic application of growth factors) and received grafts containing quail neural crest cells. The distribution of the epidermal melanoblasts which had differentiated from the quail grafts revealed that both the apical ectodermal ridge and the growth factors invariably caused the migration of epidermal melanoblasts towards them. This leads to the conclusion that the presence of the apical ectodermal ridge is the sufficient condition to direct the migration of epidermal melanoblasts within the avian embryonic wing bud. Furthermore, FGF-2 and IGF-I and to a lesser extent FGF-4 play a decisive role in directing the migration of epidermal melanoblasts within chicken wing buds and are likely to be involved in the molecular cascade by means of which the apical ectodermal ridge controls the migration of epidermal melanoblasts.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0340-2061
pubmed:author
pubmed:issnType
Print
pubmed:volume
203
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
137-46
pubmed:dateRevised
2005-11-17
pubmed:meshHeading
pubmed-meshheading:11218060-Animals, pubmed-meshheading:11218060-Cell Movement, pubmed-meshheading:11218060-Cell Transplantation, pubmed-meshheading:11218060-Chick Embryo, pubmed-meshheading:11218060-Coturnix, pubmed-meshheading:11218060-Drug Implants, pubmed-meshheading:11218060-Ectoderm, pubmed-meshheading:11218060-Epidermis, pubmed-meshheading:11218060-Feathers, pubmed-meshheading:11218060-Fibroblast Growth Factor 2, pubmed-meshheading:11218060-Fibroblast Growth Factor 4, pubmed-meshheading:11218060-Fibroblast Growth Factors, pubmed-meshheading:11218060-Insulin-Like Growth Factor I, pubmed-meshheading:11218060-Melanocytes, pubmed-meshheading:11218060-Microspheres, pubmed-meshheading:11218060-Neural Crest, pubmed-meshheading:11218060-Pigmentation, pubmed-meshheading:11218060-Proto-Oncogene Proteins, pubmed-meshheading:11218060-Stem Cells, pubmed-meshheading:11218060-Wing
pubmed:year
2001
pubmed:articleTitle
The apical ectodermal ridge, fibroblast growth factors (FGF-2 and FGF-4) and insulin-like growth factor I (IGF-I) control the migration of epidermal melanoblasts in chicken wing buds.
pubmed:affiliation
Institute for Histology and Embryology, University of Vienna, Austria. Christian.Schoefer@univie.ac.at
pubmed:publicationType
Journal Article