Abstract
1 The effects of an adenosine diphosphate (ADP) analogue, adenosine 5'-O-(2-thiodiphosphate) (ADP-beta-S), in which a terminal phosphate oxygen has been replaced by sulphur, were studied on human platelets. 2 ADP-beta-S induced platelet aggregation and inhibited prostaglandin E1 (PGE1)-stimulated adenylate cyclase but in both cases was less potent than ADP and did not achieve the same maximal effects. 3 Both actions of ADP could be inhibited by the simultaneous addition of ADP-beta-S (50 microM). 4 Aggregation induced by 11 alpha, 9 alpha-epoxymethano prostaglandin H2 (a stable endoperoxide analogue) was not inhibited by simultaneous addition of ADP-beta-S (50 microM). 5 The behaviour of ADP-beta-S towards human platelets was consistent with it being a partial agonist.
Full text
PDF



Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Cooper D. M., Rodbell M. ADP is a potent inhibitor of human platelet plasma membrane adenylate cyclase. Nature. 1979 Nov 29;282(5738):517–518. doi: 10.1038/282517a0. [DOI] [PubMed] [Google Scholar]
- Cusack N. J., Born G. V. Effects of photolysable 2-azido analogues of adenosine, AMP and ADP on human platelets. Proc R Soc Lond B Biol Sci. 1977 Jul 20;197(1129):515–520. doi: 10.1098/rspb.1977.0084. [DOI] [PubMed] [Google Scholar]
- GAARDER A., JONSEN J., LALAND S., HELLEM A., OWREN P. A. Adenosine diphosphate in red cells as a factor in the adhesiveness of human blood platelets. Nature. 1961 Nov 11;192:531–532. doi: 10.1038/192531a0. [DOI] [PubMed] [Google Scholar]
- Gough G., Maguire M. H., Penglis F. Analogues of adenosine 5'-diphosphate-new platelet aggregators. Influence of purine ring and and phosphate chain substitutions on the platelet-aggregating potency of adenosine 5'-diphosphate. Mol Pharmacol. 1972 Mar;8(2):170–177. [PubMed] [Google Scholar]
- Haslam R. J. Interactions of the pharmacological receptors of blood platelets with adenylate cyclase. Ser Haematol. 1973;6(3):333–350. [PubMed] [Google Scholar]
- Haslam R. J., Rosson G. M. Effects of adenosine on levels of adenosine cyclic 3',5'-monophosphate in human blood platelets in relation to adenosine incorporation and platelet aggregation. Mol Pharmacol. 1975 Sep;11(5):528–544. [PubMed] [Google Scholar]
- Horák H., Barton P. G. Effects of alpha, beta-methylene-adenosine-5'-diphosphate on blood platelet aggregation. Biochim Biophys Acta. 1974 Dec 24;373(3):471–480. doi: 10.1016/0005-2736(74)90026-1. [DOI] [PubMed] [Google Scholar]
- Lips J. P., Sixma J. J., Schiphorst M. E. Binding of adenosine diphosphate to human blood platelets and to isolated blood platelet membranes. Biochim Biophys Acta. 1980 Apr 3;628(4):451–467. doi: 10.1016/0304-4165(80)90394-3. [DOI] [PubMed] [Google Scholar]
- MacIntyre D. E., Salzman E. W., Gordon J. L. Prostaglandin receptors on human platelets. Structure-activity relationships of stimulatory prostaglandins. Biochem J. 1978 Sep 15;174(3):921–929. doi: 10.1042/bj1740921. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Macfarlane D. E., Mills D. C. The effects of ATP on platelets: evidence against the central role of released ADP in primary aggregation. Blood. 1975 Sep;46(3):309–320. [PubMed] [Google Scholar]
- Michal F., Born G. V. Effect of the rapid shape change of platelets on the transmission and scattering of light through plasma. Nat New Biol. 1971 Jun 16;231(24):220–222. doi: 10.1038/newbio231220a0. [DOI] [PubMed] [Google Scholar]