Abstract
Eight groups of dental tissues were mechanically dissected from the mandibles of one-year-old steers; they were then defatted and decalcified in HCI. The noncollagenous proteins were extracted with various solvents from collections of tissue and bio-assayed for osteo-inductive activity. Collectively, the hard tissue (dentin, enamel, and cementum) noncollagenous proteins were fractionated by molecular sieve chromatography, hydroxyapatite affinity chromatography, and ion exchange chromatography. Osteo-inductive activity of each protein fraction was determined by implantation in the quadriceps muscle pouch of mice. The quantity of bone was measured by computerized image analysis. From 71% to 83% of 41 implants of dental hard tissues induced bone formation. The quantity of bone was greater from unerupted than from erupted teeth. Dental soft tissues that had no osteo-inductive activity were rich in a 14-kDa protein, presumably matrix gamma-carboxyglutamic acid-rich proteins. Proteins with Mr of from 15 to 28 kDa were associated with osteo-inductive activity. Components with Mr greater than 28 kDa had no activity. These observations suggest that bovine teeth have a selection of osteo-inductive proteins that is comparable in range of MW to bovine bone morphogenetic protein.
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Dates
Type | When |
---|---|
Created | 14 years, 8 months ago (Nov. 28, 2010, 9:14 p.m.) |
Deposited | 5 months, 3 weeks ago (March 3, 2025, 3:54 p.m.) |
Indexed | 1 month, 1 week ago (July 16, 2025, 9:34 a.m.) |
Issued | 36 years, 2 months ago (June 1, 1989) |
Published | 36 years, 2 months ago (June 1, 1989) |
Published Online | 36 years, 2 months ago (June 1, 1989) |
Published Print | 36 years, 2 months ago (June 1, 1989) |
@article{Kawai_1989, title={Bovine Tooth-derived Bone Morphogenetic Protein}, volume={68}, ISSN={1544-0591}, url={http://dx.doi.org/10.1177/00220345890680060301}, DOI={10.1177/00220345890680060301}, number={6}, journal={Journal of Dental Research}, publisher={SAGE Publications}, author={Kawai, T. and Urist, M.R.}, year={1989}, month=jun, pages={1069–1074} }