Linked Life Data

10679688

Source:http://linkedlifedata.com/resource/pubmed/id/10679688

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
2000-3-24
pubmed:abstractText
This study was carried out to determine the effect of recombinant human bone morphogenetic protein (rhBMP) pharmacokinetics (PK) on rhBMP-induced osteoinductive activity. It was our working hypothesis that the PK of a rhBMP significantly affects its osteoinductive activity. The PK of various rhBMPs (rhBMP-2, rhBMP-4, rhBMP-6, and chemically modified rhBMP-2) implanted with four biomaterial carries (Helistat, hDBM, Osteograf/N, and Dexon) was determined using (125)I-labeled proteins in the rat ectopic assay. A select combination of rhBMP and carriers then was evaluated in the rat ectopic assay for osteoinductive activity using a semi-quantitative histologic scoring system. The results indicate that initial protein retention is dependent on protein isoelectric point (pI); proteins with a higher pI yielded a higher implant retention. Subsequent PK was not strongly dependent on the pI or on the carrier. Because of the difference in early retention, the rhBMP-carrier combinations exhibited a >100-fold difference in implant-retained protein dose. When rhBMP-2 and rhBMP-4 were implanted with the carriers, more rhBMP-2 was retained in an implant, and the osteoinductive potency of rhBMP-2 typically was higher than rhBMP-4 at low implantation doses. We conclude that protein pI plays a significant role in the local retention of implanted rhBMP and that higher retention yields a higher osteoinductive activity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0021-9304
pubmed:author
pubmed:copyrightInfo
Copyright 2000 John Wiley & Sons, Inc.
pubmed:issnType
Print
pubmed:volume
50
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
227-38
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
2000
pubmed:articleTitle
Implantation of recombinant human bone morphogenetic proteins with biomaterial carriers: A correlation between protein pharmacokinetics and osteoinduction in the rat ectopic model.
pubmed:affiliation
Department of Biomedical Engineering, 10-102 Clinical Sciences Building, University of Alberta, Edmonton, AB T6G 2G3. hasan.uludag@ualberta.ca
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't