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Effects of moisture and temperature on the osteoinductivity of demineralized bone matrix
Author(s) -
Han Bo,
Yang Zhi,
Nimni Marcel
Publication year - 2005
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1016/j.orthres.2004.11.007
Subject(s) - dbm , demineralized bone matrix , moisture , in vivo , chemistry , matrix (chemical analysis) , in vitro , scaffold , biomedical engineering , biophysics , materials science , composite material , optoelectronics , medicine , biochemistry , biology , chromatography , amplifier , microbiology and biotechnology , cmos
Demineralized bone matrix (DBM) is a well established osteoinductive bone graft material. It has been mixed with a variety of carriers to adjust to different forms of handling for a variety of applications. The impact of the various carriers on osteoinductivity remains largely unknown. Using an in vitro cell culture assay and in vivo intramuscular implantations into nude rats, the effects of moisture from water‐based carriers and the storage temperature on osteoinductivity were studied. In the dry state, DBM can preserve its osteoinductive activity when temperatures reached 65 °C, but in the presence of moisture, the activity decreases with incubation time. Nearly 90% of the DBM activity is lost when maintained for 5 weeks at 65 °C. This study further indicates that the structure and stability of the collagen network in DBM not only provide a scaffold for osteogenitor cell proliferation and differentiation, but also controls the release rate of osteoinductive growth factors. © 2004 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.