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ISSN 1001-5256 (Print)
ISSN 2097-3497 (Online)
CN 22-1108/R
Volume 41 Issue 8
Aug.  2025
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Article Contents

Histological factors for improving portal hypertension in patients with chronic hepatitis B cirrhosis

DOI: 10.12449/JCH250815
Research funding:

National Science and Technology Major Project (2014ZX10005001);

National Natural Science Foundation of China (82274305);

National Natural Science Foundation of China (82305200);

Shanghai Key Specialty of Traditional Chinese Clinical Medicine (shslczdzk01201);

Science and technology development project of Shanghai Academy of Traditional Chinese Medicine (24YJS03)

More Information
  • Corresponding author: LIU Chenghai, chenghailiu@hotmail.com (ORCID: 0000-0002-1696-6008)
  • Received Date: 2025-01-15
  • Accepted Date: 2025-02-13
  • Published Date: 2025-08-25
  •   Objective  To investigate the histological and cellular bases for the improvement of portal hypertension (PH) by observing liver histopathological changes after treatment in patients with cirrhotic portal hypertension, and to provide a basis for clinical drug development.  Methods  A total of 322 patients with hepatitis B cirrhosis who completed 48 weeks of antiviral therapy or combined anti-fibrotic treatment in 20 hospitals across 12 provinces in China from September 2014 to October 2018 were enrolled, and the noninvasive diagnostic criteria for clinically significant portal hypertension (CSPH) from Baveno Ⅶ were used to assess the severity of PH; 43 patients with a confirmed diagnosis of CSPH were identified based on liver stiffness measurement (LSM) ≥25 kPa before treatment, and according to whether the severity of PH was reduced by ≥2 grades after treatment, the patients were divided into PH improvement (n=19) group and PH non-improvement group(n=24). Related data were collected, including demographic data, laboratory tests. Liver fibrosis were assessed, including HE staining and reticular fiber staining; liver microvascular lesions were assessed, including obliterative portal venopathy (OPV), nodular regenerative hyperplasia (NRH), and incomplete septal fibrosis (ISF). Single immunohistochemical staining was performed for von Willebrand factor (vWF), and fibronectin; multiplex immunohistochemical staining was performed for fibrinogen, CD32b, CD31, alpha-smooth muscle actin (α-SMA). The independent-samples t test or the Mann-Whitney U test was used for comparison of continuous data between two groups, and the chi-square test was used for comparison of categorical data between two groups.  Results  After 48 weeks of treatment, 43 patients had significant improvements in red blood cell count, alanine aminotransferase, aspartate aminotransferase, aspartate aminotransferase-to-platelet ratio index score, liver fibrosis grade, and PH grade (all P<0.05), among whom 19 patients showed a reduction in PH severity by ≥2 grades (PH improvement group), while the remaining patients were enrolled as the PH non-improvement group. There was no significant difference in the outcome of liver fibrosis between the two groups (χ²=3.380, P=0.066). Microvascular lesion assessment showed that compared with the PH non-improvement group, the PH improvement group had significantly lower OPV severity, microvascular density (the expression level of vWF), and expression of fibronectin (all P<0.05), while there were no significant differences in NRH severity, ISF severity, and the expression level of fibrinogen between the two groups (all P>0.05). Cytological evaluation showed no significant differences in the expression levels of CD32b, CD31, and α-SMA between the two groups before and after treatment (all P>0.05), and comparison of the expression levels before and after treatment showed that the PH improvement group had a significant increase in the expression level of CD32b (t=-2.007, P=0.045) and a significant reduction in the expression level of α-SMA (t=2.628, P=0.013).  Conclusion  The pathological features of PH improvement are associated with liver fibrosis regression and the improvement in liver microvascular lesions, and at the cellular level, PH improvement is associated with the dedifferentiation of liver sinusoidal endothelial cells and the activated phenotype of hepatic stellate cells.

     

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