H Schlüter, I Grobeta, J Bachmann, R Kaufmann, M van der Giet, M Tepel, J R Nofer, G Assmann, M Karas, J Jankowski, W Zidek
J Clin Invest.
1998;
101(3):682–688
doi:10.1172/JCI119882
This article Copyright © 1998, The American Society for Clinical Investigation
Abstract
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e isolated and identified nucleoside(5') oligophospho-(5') nucleosides containing adenosine and guanosine (ApnG; n = 3-6) as well as diguanosine polyphosphates (GpnG; n = 3-6) in human platelets. For identification, UV spectrometry, matrix-assisted laser desorption/ionization, postsource decay matrix-assisted laser desorption/ionization mass spectrometry, and enzymatic cleavage experiments were used. The adenosine(5') oligophospho-(5') guanosines act as vasoconstrictors and growth factors. The diguanosine polyphosphates are potent modulators of growth in vascular smooth muscle cells, but do not affect vascular tone.
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