title: Prostaglandin I2 during radiolabelling improves recovery, but does not change platelet half-life and platelet uptake over active human lesion sites.
abstract: The fact that prostacyclin is able to preserve platelets in-vitro stimulated the question whether platelets being treated in presence of prostacyclin might behave different after reinjection in human. We therefore studied the effect of synthetic PG12 in-vitro, being added immediately after blood sampling. It is demonstrated that the presence of prostacyclin does not change the labelling efficiency and in-vitro viability beside the alterations induced by this compound itself, however, it results in a significantly improved recovery. Furthermore, the platelet half-life in the patients as well as the deposition of the radiolabelled platelets on active human atherosclerotic lesions does not seem to be affected. Thus, the addition of PGI2-improves cellular viability during the preparation without negatively interfering with the in-vitro and in-vivo results later on. Thus, the use of PGI2 can be strongly recommended.
mesh_terms: D000368:Aged; D001161:Arteriosclerosis / Q000097:blood*; D001792:Blood Platelets / Q000187:drug effects* / Q000378:metabolism; D001793:Blood Preservation; D011464:Epoprostenol / Q000494:pharmacology*; D005260:Female; D006207:Half-Life; D006801:Humans; D007205:Indium Radioisotopes; D007553:Isotope Labeling; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D015125:Oxyquinoline / Q000031:analogs & derivatives; D010974:Platelet Aggregation / Q000187:drug effects; D011868:Radioisotopes
chemical_list: D007205:Indium Radioisotopes; D009942:Organometallic Compounds; D011868:Radioisotopes; C032950:indium oxine; D015125:Oxyquinoline; D011464:Epoprostenol