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Adsorption of recombinant human bone morphogenetic protein rhBMP-2m onto hydroxyapatite.

AuthorsBoix, T.; Gómez-Morales, J.; Torrent-Burgués, J.; Monfort, A.; Puigdomènech, Pere
Langmuir isotherm
Issue DateMay-2005
CitationJournal of Inorganic Biochemistry 99(5): 1043-1050 (2005)
AbstractRecombinant human mature bone morphogenetic protein 2 (rhBMP-2m) has been expressed to study its adsorption onto precipitated hydroxyapatite (HA). The influence on the adsorption process of different parameters such as pH and concentrations of calcium, phosphate or NaCl has been investigated. Although the adsorption proceeds rapidly at the initial stages, the maximum adsorbed amount is reached after four hours. The process is notably influenced by adding calcium or phosphate to the system but, while calcium ions increase the adsorption of rhBMP-2m onto HA, phosphate ions inhibit it. The influence of pH and NaCl concentration are notable but less important than those of calcium and phosphate. The adsorption data fit well to a Langmuir adsorption isotherm. The values of the isotherm parameters have been calculated and discussed, and an adsorption mechanism has been proposed.
Description8 figures, 2 tables.
Publisher version (URL)http://dx.doi.org/10.1016/j.jinorgbio.2005.01.011
Appears in Collections:(IACT) Artículos
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