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12th Congress of the European Hematology ... - Haematologica

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functional activity was confirmed by pit formation and collagen release<br />

ELISA assays. Results. CCR1 expression was induced early during OC<br />

formation, at one week 60% <strong>of</strong> <strong>the</strong> monocyte population expressed<br />

CCR1 by flow cytometric analysis. Macrophage inflammatory protein-<br />

1 α secretion was also stimulated, from 57 pg/mL at 24 hours to 156<br />

pg/mL at one week. Treatment with MLN 3897 (10 nM) resulted in inhibition<br />

<strong>of</strong> both OC formation (by 40%) and function (by 70%) in a dosedependent<br />

way (p

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