Increased response to arachidonic acid and U-46619 and resistance to inhibitory prostaglandins in patients with chronic myeloproliferative disorders

S. Cortelazzo, M. Galli, D. Castagna, P. Viero, G. De Gaetano, T. Barbui

Research output: Contribution to journalArticlepeer-review

Abstract

In patients with myeloproliferative disorders (MPD) a group of related diseases of the bone marrow stem cell and a recurrent haemorrhagic and/or thrombotic complications, the production of aggregating prostaglandins (PGs) may be normal or slightly reduced, while PGI2 production is normal. However, MPD platelet sensitivity to antiaggregatory PGs is still unknown. We studied the potency of PGD2, PGI2 and PGE1 as inhibitors of platelet aggregation induced by threshold aggregating concentrations of arachidonic acid and U-46619-analogue of the cyclic endoperoxide PGH2 in 20 patients with MPD in comparision with healthy controls, with the aim of evaluating the sensitivity of MPD platelets to antiaggregatory PGs. In these patients platelet prostanoid metabolism was normal. However, the functional response of platelets to aggregating and antiaggregating prostanoids was shifted toward potentially increased platelet aggregation response. These findings could have a clinical relevance in view of the haemostatic and thrombotic complications so frequent in MPD.

Original languageEnglish
Pages (from-to)73-76
Number of pages4
JournalThrombosis and Haemostasis
Volume59
Issue number1
Publication statusPublished - 1988

ASJC Scopus subject areas

  • Hematology

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