Effectiveness of phosphocitrate and N-sulpho-2-amino tricarballylate,a new analogue of phosphocitrate,in blocking hydroxyapatite induced crystal growth and calcium accumulation by matrix vesicles |
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Authors: | R Shankar M R Brown L K Wong J D Sallis |
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Institution: | (1) Department of Biochemistry, University of Tasmania, Box 252C, G.P.O., Hobart, Tasmania, (Australia) |
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Abstract: | Summary Phosphocitrate and its analogue N-sulpho-2-amino tricarballylate were compared with ethane-1-hydroxy-1, 1-diphosphonate for inhibition of calcium phosphate crystallization in hydroxyapatite induced crystal growth and45Ca uptake by matrix vesicles. Phosphocitrate (1 M) was the most potent inhibitor followed by ethane-1-hydroxy-1, 1-diphosphonate and N-sulpho-2-amino tricarballylate, the latter requiring a high concentration (100 M) to be equally effective as an inhibitor.Acknowledgments. We wish to thank Mr J. Jordan and Miss L.C. Ward for the excellent technical assistance and Mr R.J. Tennant for the transmission electron microscopy. We also thank the Golden Poultry Farming Industries Ltd., Hobart, Tasmania for their generous supply of broiler strain chickens. |
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