Formation of prostacyclin-sensitive platelet aggregates in human whole blood in vitro. Part I. The occurrence of the phenomenon in healthy Male volunteers

B. Spławinska, W. Furmaga, M. Nieszpaur, W. Ziembicki, J. Kuzniar, Z. Dłuska, A. Rybak, J. Spławinski

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

When unstirred citrated blood of young males was left to stand at 21 °C, the number of free platelets decreased as measured with a whole blood platelet counter. This decrease indicated spontaneous platelet aggregation (SPA) since it was accompanied by the time-dependent increase in platelet micro-aggregates and plasma beta-thromboglobulin while lactate dehydrogenase level did not change significantly. Addition of PGI2 to whole blood increased free platelet count and decreased the number of platelet micro-aggregates. The de-aggregatory effect of PGI2 (measured as a percentage increase in free platelet number) was correlated with the initial amount of platelet micro-aggregates. Blood storage enhanced SPA and de-aggregatory effect of prostacyclin. Immediately after blood collection de-aggregatory effect of prostacyclin was absent. Our results favour an assumption that prostacyclin-sensitive platelet aggregates in blood of young volunteers are formed in vitro rather than in vivo.

Original languageEnglish (US)
Pages (from-to)119-124
Number of pages6
JournalScandinavian Journal of Clinical and Laboratory Investigation
Volume47
Issue number2
DOIs
StatePublished - Jan 1 1987
Externally publishedYes

Keywords

  • ADP
  • Circulating platelet aggregates
  • Spontaneous platelet aggregation

ASJC Scopus subject areas

  • Clinical Biochemistry

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