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Protein C Deficiency in Chronic Hepatitis C: Correlation With Histological Extent of Liver Fibrosis.
Clinical and Applied Thrombosis/hemostasis 2017 January
There is accumulating evidence that the coagulation system is involved in the process of fibrogenesis in chronic liver disease. Recent studies postulated a possible connection between plasmatic hypercoagulability and progression of fibrosis. The aim of the study was to investigate disorders of the coagulation system in patients with chronic hepatitis C having different extent of hepatic fibrosis well defined by liver histology. A total of 62 patients with chronic hepatitis C were recruited and categorized into 2 groups according to their histological fibrosis stage : mild/moderate fibrosis group (F0-F3 group, n = 30) and extensive fibrosis/cirrhosis group (F4-F6 group, n = 32). The control group consisted of 31 healthy individuals. The following hemostatic assays were evaluated: antithrombin III (AT), protein C (PC) activity, activated partial thromboplastin time, prothrombin time, plasma fibrinogen as well as conventional liver function test. The PC level exhibited a significant reduction in both patient groups when compared to the normal control group (89.25% ± 10.05% and 48.33% ± 15.86% vs 111.86 ± 10.90; P < .001 and P < .001). The PC was found to be the strongest associated factor to histological fibrosis stage (r = -.834; P < .0001). Univariate and multivariate analysis showed that AT (P = .003) and PC (P = .0001) were the most important factors associated with advanced fibrosis. The PC (P = .001) was found to be the only predictor of mild fibrosis. In conclusion, PC deficiency occurs in an early stage of liver fibrosis. The severity of deficiency is proportional to extent of fibrosis. The PC may have a key role in linking hypercoagulability with hepatic fibrogenesis in chronic liver disease.
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