IMPACT OF ANTIVIRAL THERAPY FOR CHRONIC HEPATITIS C ON CYTOKINE SYNTHESIS AND HEPATIC FIBROSING PROCESSES
https://doi.org/10.17650/1818-8338-2015-9-2-28-35
Abstract
Objective: to estimate the time course of changes in the levels of tumor necrosis factor-α (TNF-α), interleukin-4 (IL-4), IL-6, and the hepatic fibrosis indicators hyaluronic acid (HA) and liver elasticity index during combined antiviral therapy (AVT) with interferon alpha-2b and ribavirin in patients with chronic hepatitis C (CHC).
Subjects and methods. Fifty patients with CHC were examined. Serum TNF-α, IL-6, IL-4, and HA were estimated using an enzyme immunoassay. The stage of hepatic fibrosis was determined by fibroelastography with the liver elastic index being measured; the time course of changes in the indicators was assessed in 20 patients at the end of AVT. A virological response was monitored at therapy completion and 6 months later.
Results. The patients with CHC in the reactivation phase were found to have enhanced TNF-α, IL-6, and IL-4 activities in 84, 60, and 100 % of the cases, respectively (р < 0.001, р = 0.01, р < 0.001, respectively). The median serum concentration of HA in CHC was 1.8-fold higher than that in the control group (p = 0.03); the liver elastic index averaged 6.5 kPa. TNF-α and IL-6 levels correlated with viremia, transaminases, and hepatic fibrosis indicators. At combined AVT completion, the virological response rate was as high as 85 %, which was attended by a considerable reduction in cytolysis, HA concentrations, and liver density index to 5.4 kPa (3.6–6.8 kPa) (p < 0.04), and in the activity of the examined cytokines. The sustained virological response rate was 80 %. Only IL-4 levels decreased and TNF-α and IL-6 concentration remained at the baseline level in patients unresponsive to AVT.
Conclusion. It is expedient to monitor TNF-α, IL-4, IL-6, and HA to evaluate the severity of liver involvement in CHC and to predict the efficiency of AVT.
About the Authors
V. V. ShchekotovRussian Federation
I. A. Bulatova
Russian Federation
A. P. Shchekotova
Russian Federation
N. I. Nasibullina
Russian Federation
G. G. Larionova
Russian Federation
A. I. Pavlov
Russian Federation
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Review
For citations:
Shchekotov V.V., Bulatova I.A., Shchekotova A.P., Nasibullina N.I., Larionova G.G., Pavlov A.I. IMPACT OF ANTIVIRAL THERAPY FOR CHRONIC HEPATITIS C ON CYTOKINE SYNTHESIS AND HEPATIC FIBROSING PROCESSES. The Clinician. 2015;9(2):28-35. (In Russ.) https://doi.org/10.17650/1818-8338-2015-9-2-28-35