Linked Life Data

10971036

Source:http://linkedlifedata.com/resource/pubmed/id/10971036

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2-3
pubmed:dateCreated
2000-9-28
pubmed:abstractText
Osteoarthritic lesions appear in the articular cartilage of the temporomandibular joint of mice aged 7 months and older. Reduced rate of proteoglycan (PG) synthesis leading to destruction of the articular cartilage was observed in this joint. The purpose of the present study was to test the ability of transforming growth factor-beta1 (TGF-beta1), insulin-like growth factor-1 (IGF-1) and growth hormone (GH) to induce PG synthesis in joint cartilage of aged animals and to compare it with the effect of interleukin-1alpha (IL-1alpha). Mandibular condyle explants from 18-month-old mice were cultured up to 72 h in serum-free medium, supplemented with IL-1alpha (TGF-beta1 (0.1-5.0 ng/ml), TGF-beta1 (1.0 ng/ml) + IGF-1 (2 ng/ml) or GH (10 ng/ml). The incorporation of (35)S-SO(4) into sulfated PG was tested. Cartilage samples were processed for histomorphometry using sections stained with 0.1% toluidine blue (TB), pH 1.8. Results indicated that in cultures supplemented (48 h) with either TGF-beta, TGF-beta + IGF-1 or with GH, an increased height and area of TB-positive staining as well as increased incorporation of (35)S-SO(4) into sulfated PG were observed. In contrast, the cytokine IL-1alpha exerted an inhibitory effect on TB staining and on (35)S-SO(4) incorporation. The present study demonstrated that in vitro supplementation of IL-1alpha to mandibular condyle cartilage reduced the height and area of TB staining and incorporation of (35)S-SO(4), whereas TGF-beta1, TGF-beta1 + IGF-1 or GH increased the height and area of TB staining and increased incorporation of (35)S-SO(4). The two parameters used to identify increased PG synthesis were shown to reveal similar results and were useful for studying the dynamic events taking place in cartilage destruction and repair in osteoarthritis.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1422-6405
pubmed:author
pubmed:copyrightInfo
Copyright 2000 S. Karger AG, Basel
pubmed:issnType
Print
pubmed:volume
167
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
121-9
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:10971036-Age Factors, pubmed-meshheading:10971036-Animals, pubmed-meshheading:10971036-Cartilage, Articular, pubmed-meshheading:10971036-Coloring Agents, pubmed-meshheading:10971036-Female, pubmed-meshheading:10971036-Growth Hormone, pubmed-meshheading:10971036-Insulin-Like Growth Factor I, pubmed-meshheading:10971036-Interleukin-1, pubmed-meshheading:10971036-Mandibular Condyle, pubmed-meshheading:10971036-Mice, pubmed-meshheading:10971036-Mice, Inbred ICR, pubmed-meshheading:10971036-Organ Culture Techniques, pubmed-meshheading:10971036-Osteoarthritis, pubmed-meshheading:10971036-Proteoglycans, pubmed-meshheading:10971036-Staining and Labeling, pubmed-meshheading:10971036-Temporomandibular Joint, pubmed-meshheading:10971036-Tolonium Chloride, pubmed-meshheading:10971036-Transforming Growth Factor beta
pubmed:year
2000
pubmed:articleTitle
Enhancement of toluidine blue staining by transforming growth factor-beta, insulin-like growth factor and growth hormone in the temporomandibular joint of aged mice.
pubmed:affiliation
Maxillofacial Surgery Department, Rambam Medical Center, Haifa, Israel.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't