Effect of recombinant human erythropoietin treatment on circulating reticulated platelets in uremic patients: Association with early improvement in platelet function

• Published in: American journal of hematology 1998-10, Vol.59 (2), p.105-109
• Main Authors: Tàssies, Dolors, Reverter, Joan Carles, Cases, Aleix, Calls, Jordi, Escolar, Ginés, Ordinas, Antonio
• Format: Article
• Language: English
• Subjects: Adenosine Diphosphate - pharmacology; Adult; Age Factors; Aged; Biological and medical sciences; Blood Platelets - chemistry; Blood Platelets - drug effects; Blood Platelets - pathology; Blood Platelets - physiology; Blood. Blood coagulation. Reticuloendothelial system; Erythropoietin - pharmacology; Erythropoietin - therapeutic use; Female; flow cytometry; Hematocrit; Humans; Kidney Failure, Chronic - therapy; Male; Medical sciences; Middle Aged; Pharmacology. Drug treatments; Platelet Aggregation - drug effects; Platelet Count; platelet function; recombinant human erythropoietin; Recombinant Proteins - pharmacology; Recombinant Proteins - therapeutic use; reticulated platelets; RNA - analysis; thiazole orange; Time Factors; uremia; Uremia - therapy
• ISSN: 0361-8609; 1096-8652
• DOI: 10.1002/(SICI)1096-8652(199810)59:2<105::AID-AJH1>3.0.CO;2-1

Recombinant human erythropoietin improves platelet function in uremia through the correction of anemia, but this effect can be seen also before the hematocrit rise. We studied 12 hemodialyzed patients (seven men, five women) who received recombinant human erythropoietin (40 IU kg−1 i.v., three times weekly) and were evaluated before treatment and after three doses; 24 control subjects were used. Platelet aggregation induced by adenosine 5′‐diphosphate (ADP), epinephrine, collagen, arachidonic acid, and ristocetin, and reticulated platelets determined by flow cytometry after staining with thiazole orange were measured. Platelet aggregation induced by all the agonists were impaired in uremic patients (P < 0.01), but ADP and ristocetin‐induced aggregations improved after treatment (P < 0.01). Hemodialyzed patients had less reticulated platelets than controls (P < 0.01). Reticulated platelets increased after three doses of treatment (P < 0.01). In conclusion, improvement of platelet function at early stages of recombinant human erythropoietin treatment may be attributed to the increase in young platelets detected as reticulated platelets. Am. J. Hematol. 59:105–109, 1998. © 1998 Wiley‐Liss, Inc.