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The research objective was to identify and quantify the immunohistochemically (IHC) stained hepatic stellate cells (HSCs) in children with chronic hepatitis B (CHB), including staging (S), location in the hepatic lobule, and correlation with hepatocyte count. Retrospective morphological analysis was based on liver biopsies obtained from 70 CHB children before antiviral treatment. To determine fibrosis stage, the Batts and Ludwig scoring system was applied. Immunohistochemical examinations used monoclonal antibodies against - SMA. IHC observations in CHB children revealed a significant positive correlation between the mean number of SMA immunopositive HSCs within the hepatic lobule (r = 0.518; p &lt; 0.001) and fibrosis stage. In biopsy specimens with intensive fibrosis, most HSCs had an elongated shape and demonstrated evidently strong immunoexpression of cytoskeletal protein - SMA. The mean counts of HSCs/100 hepatocytes (in high power field) in 4 study groups, i.e. with S-0, S-1, S-2, S-3, were 5.00; 5.98; 9.80; 12.19, respectively. Interestingly, in most groups the highest count of immunoreactive HSCs/100 hepatocytes was in the intermediate zone, indicating its high metabolic activity in liver fibrogenesis. Immunohistochemical and statistical investigations of HSCs in children with CHB showed a close positive correlation of cell count with fibrosis intensity, which may have prognostic implications in this pathology.

Immunoreactive hepatic stellate cells in biopsy material in children with chronic hepatitis B. The first report in pediatric patients