Serum thrombopoietin levels in patients with chronic hepatitis and liver cirrhosis, and its relationship with circulating thrombocyte counts.
2002
Background/Aims: Thromobocytopenia, in chronic liver diseases may be related to deficient production of thrombopoietin. The aim of this study was to measure serum thrombopoietin levels and to examine the relationship between serum thrombopoletin concentration, circulating platelet counts and clinical stage of the disease in patients with chronic hepatitis and liver cirrhosis. Methodology: The study included 18 patients with chronic hepatitis, 48 with liver cirrhosis and 27 healthy volunteers. Serum thrombopoietin levels were measured by enzyme-linked immunosorbent assay. Additionally, serum albumin levels, prothrombin time, circulating platelet counts and spleen volume index were determined. Results: Mean Serum thrombopoietin level (100.96±41.67pg/mL) in the chrome hepatitis group was similar to that of the healthy group (97.60± 43.99pg/mL), however serum thrombopotetin levels in patients with liver cirrhosis (69.60±30.23pg/mL) were lower than patients with chronic hepatitis and controls (p<0.05 for both). In patients with liver cirrhosis, serum thrombopoietin levels were found to be decreased as the disease progressed (80.99± 24.85 pg/mL in patients at Child-Pugh stage A 67.92± 39.37 in patients at stage B and 57.62±21.09pg/mL in patients at stage C). Cirrhotie patients had increased prothrombin time (17.12± 3.52 sec) and spleen volume index (94.38±26.48cm 2 ), and decreased serum albumin level (3.11±0.56g/dL) and platelet counts (102368±30653/mm 3 ) when compared to both chronic hepatitis and control groups. Thrombocytopenia was found in 31 (65%) of the patients with liver cirrhosis. In patients with liver cirrhosis, while there was a positive correlation between serum thrombopoietin and albumin levels (r=0.36, p= 0.004), no correlation was found between platelet counts and serum thrombopoletin level, and spleen volume index. Conclusions: The findings reveal that serum thrombopoietin levels are normal in patients with chronic hepatitis, but in patients with liver cirrhosis, serum thrombopoietin levels decrease, as degree of cirrhosis progresses. The impaired production of thrombopoietin may contribute to the development of thrombocytopenia in advanced stage of liver disease.
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