Background: Development of non-invasive markers that can predict the stages of hepatic fibrosis without resorting to repeated liver biopsies is still an important goal to evaluate the effectiveness of antifibrotic treatment. The present work investigates the value of the assessment of peripheral circulating reelin, in which the liver represents its prime source, as a marker for monitoring hepatic fibrogenesis.
Methods: Seventy-four cases with chronic hepatitis positive for serum HCV RNA and 15 healthy volunteers were enrolled in this study. Assessment of reelin in the harvested serum and in 64 corresponding liver biopsies using immunofluorescence technique was done. The results were evaluated in relation to the stages and quantitative morphometric analysis of hepatic fibrosis as well as the serum levels of the validated biomarker hyaluronic acid.
Results: Significant correlation was detected between the levels of serum reelin and the semiquantitative assessment of reelin immunoreactivity in liver tissue, the stages of hepatic fibrosis, the morphometrically determined collagen and serum hyaluronic acid with a correlation coefficient of 0.675, 0.623, 0.479, 0.772, respectively with p<0.001. The sensitivity and the specificity of reelin for the determination of advanced (F2+F3) and significant fibrosis (F2-F4) were nearly comparable to the result of hyaluronic acid. In addition the area under curve (AUC) were 0.859, 0.871 for the reelin versus 0.878, and 0.891 for the hyaluronic acid.
Conclusions: In conclusion serum reelin may be considered an additional useful parameter for monitoring the progression of hepatic fibrosis in HCV-infected patients specially in those with active rheumatological conditions which result in an increase in serum hyaluronic acid.
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