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231223s2004 xx ||||| 00| ||eng c |
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|a (NLM)15248694
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Michel, Marc
|e verfasserin
|4 aut
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| 245 |
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|a Giant liposome microreactors for controlled production of calcium phosphate crystals
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|c 2004
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 07.06.2006
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|a Date Revised 13.07.2004
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|a published: Print
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|a Citation Status MEDLINE
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|a Copyright 2004 American Chemical Society
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|a Calcium phosphates are among the most important biominerals in living organisms, where they play both a mechanical and a calcium storage role. Their growth in vivo is under strong biological control, and this process occurs in closed spaces. Our aim in this paper is to describe a microreactor system able to control the mineralization process within closed spaces. To this aim we produce giant liposomes containing calcium ions as active ions in the mineralization process, spermine as an activator of crystal growth, and alkaline phosphatase as a catalyst to convert phosphate esters into phosphates. These phosphate esters are provided in the form of p-nitrophenyl phosphate outside of the liposomes. It is demonstrated that these amphiphilic molecules are able to diffuse through the lipidic container and to be subsequently hydrolyzed under enzymatic catalysis into active phosphate species which interact with the already available calcium and spermine to produce calcium phosphates only in the interior of the liposomes. This opens the route to control the calcium phosphate particle size in biomimetic systems
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|a Journal Article
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|a Calcium Phosphates
|2 NLM
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|a Esters
|2 NLM
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| 650 |
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|a Liposomes
|2 NLM
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|a Alkaline Phosphatase
|2 NLM
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|a EC 3.1.3.1
|2 NLM
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1 |
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|a Winterhalter, Mathias
|e verfasserin
|4 aut
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|a Darbois, Laurent
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Hemmerle, Joseph
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Voegel, Jean Claude
|e verfasserin
|4 aut
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1 |
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|a Schaaf, Pierre
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Ball, Vincent
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Langmuir : the ACS journal of surfaces and colloids
|d 1992
|g 20(2004), 15 vom: 20. Juli, Seite 6127-33
|w (DE-627)NLM098181009
|x 1520-5827
|7 nnns
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| 773 |
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|g volume:20
|g year:2004
|g number:15
|g day:20
|g month:07
|g pages:6127-33
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