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1.  A simple and non-radioactive technique to study the effect of monophosphoesters on matrix vesicle-mediated calcification 
A simple and non-radioactive technique based on O-cresolpthalein complexone assay was developed to study in vitro non-radioactive calcium (40Ca) deposition by isolated matrix vesicles. Using this technique, the effect of various phosphoester substrates including ATP, AMP and β-GP on in vitro MV-calcification was studied. O-cresolpthalein complexone assay with non-radioactive calcium demonstrated that AMP or β-GP were more effective in promoting calcium deposition by isolated MVs than ATP. The application of this non-radioactive technique, which is highly sensitive and simple, would offer a useful alternative approach to the routinely used radiometric biomineralization assay which employs radioactive 45Ca.
doi:10.1251/bpo97
PMCID: PMC535922  PMID: 15605107
Cartilage; Growth Plate; Bone and Bones; Calcification, Physiologic

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