Plasma thrombopoietin levels in liver cirrhosis and kidney failure |
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Authors: | Stockelberg D Andersson P Björnsson E Björk S Wadenvik H |
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Affiliation: | 1. From the;2. Haematology Section and Gastroenterology/Hepatology section;3. and;4. Department of Medicine, and Department of Nephrology, Sahlgrenska University Hospital, Göteborg University, Göteborg, Sweden |
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Abstract: | BACKGROUND: Recently, c-Mpl ligand (thrombopoietin, TPO) has been cloned by several groups and found to be a primary regulator of thrombopoiesis. Its mRNA expression has been detected in several organs including kidneys, bone marrow stroma cells, muscles, and is very strongly expressed in the liver. OBJECTIVE: To clarify thrombopoiesis and the regulation of TPO in severe liver and renal failure. DESIGN: We analysed plasma TPO levels in patients with biopsy verified liver cirrhosis (n = 18; mean platelet count 115 +/- 54 x 109 L-1), in patients on chronic haemodialysis as a result of end-stage renal failure (n = 20; mean platelet count 295 +/- 94 x 109 L-1), and in healthy individuals (n = 20; mean platelet count 250 +/- 40 x 109 L-1). Plasma was prepared from EDTA-anticoagulated whole blood and a commercially available ELISA kit was used for the analysis. RESULTS: The mean plasma TPO concentration amongst the normal individuals was 50 +/- 14 pg mL-1. In the patients with liver cirrhosis and in patients on haemodialysis the mean TPO levels were 62 +/- 19 pg mL-1 and 46 +/- 17 pg mL-1, respectively. The mean plasma TPO concentration for the cirrhotic patients was significantly higher than the mean recorded for the healthy volunteers (P = 0.031), whereas no statistically significant differences in plasma TPO were seen between the group of end-stage renal failure and normals. CONCLUSION: Our results suggest that TPO production is maintained in liver cirrhosis and in renal failure, and that the thrombocytopenia in liver cirrhosis is not due to an impaired TPO production. |
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Keywords: | ELISA kidney failure liver cirrhosis thrombopoietin |
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