Linked Life Data

9798454

Source:http://linkedlifedata.com/resource/pubmed/id/9798454

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1998-11-12
pubmed:abstractText
We detected nerve growth factor (NGF) by immunohistochemical localization in both fractured and unfractured rat rib. In unfractured bone, periosteal mesenchymal osteoprogenitor cells appeared to be the only skeletal cells which stained for NGF. Adjacent skeletal muscle fibers exhibited NGF staining both in fractured and unfractured bone. Fracture callus periosteal osteoprogenitor cells, marrow stromal cells, osteoblasts, young osteocytes and endothelial cells of new capillaries had moderate to heavy staining for NGF at 1 and 3 weeks after fracture. Deeply positioned osteocytes and osteoclasts showed no NGF staining. Most chondrocytes of fracture calluses stained for NGF, however, some chondrocytes did not stain which may indicate that NGF is produced at particular stages of chondrocytic differentiation. In calluses, periosteal matrix stained heavily for NGF when juxtaposed to cartilage and less obviously when associated with new bone at both 1 and 3 weeks post-fracture. However, other fibrous, cartilaginous and osseous matrices did not stain for NGF at any time. At 6 weeks post-fracture, NGF staining was largely confined to periosteal osteoprogenitor cells. The detection of NGF in periosteal osteoprogenitor cells of unfractured rib points to these cells having a role in nerve maintenance in intact bone. Furthermore, the localization of NGF in osteoprogenitor cells, marrow stromal cells, osteoblasts, certain chondrocytes, endothelial cells, periosteal matrix of the fracture callus and skeletal muscle may mean that these entities participate in fracture innervation. The presence of NGF in the callus may also indicate a direct, as yet undefined action of this neurotrophin on skeletal cell metabolism.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0001-6470
pubmed:author
pubmed:issnType
Print
pubmed:volume
69
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
415-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Immunohistochemical localization of nerve growth factor in fractured and unfractured rat bone.
pubmed:affiliation
School of Human Biosciences, Department of Physiology and Anatomy, La Trobe University, Bundoora, Victoria, Australia. Brian.Grills@latrobe.edu.au
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't