Cited by 482Liver Disease Diagnosis and TreatmentLiver physiology and pathologyLiver Diseases and Immunity

Progressive Fibrosis in Nonalcoholic Steatohepatitis: Association With Altered Regeneration and a Ductular Reaction

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Richardson, Michelle M., Jonsson, Julie R., Powell, Elizabeth E., Brunt, Elizabeth M., Neuschwander–Tetri, Brent A., Bhathal, Prithi S., Dixon, John B., Weltman, Martin D. +5 more·2007·Gastroenterology

Abstract

Background & aims Portal fibrosis and linkage is a key feature of progressive disease in nonalcoholic steatohepatitis (NASH), but not simple steatosis. It is underappreciated and poorly understood. Fatty liver has impaired regeneration that induces a secondary replicative pathway using bipotential, periportal, hepatic progenitor cells (HPCs). We propose that activation of this pathway, with increased cell injury in NASH, also induces a periportal ductular reaction (DR) that could produce a profibrogenic stimulus.Methods Biopsy specimens from 107 patients with nonalcoholic fatty liver disease and 11 controls were immunostained with cytokeratin-7 to quantify the DR and HPCs, and with p21 to assess hepatocyte replicative arrest. These results were correlated with clinicopathologic variables.Results Patients with nonalcoholic fatty liver disease had expansion of HPCs, with a strong association between HPCs and the DR (r(s) = 0.582, P < .0001). In those with NASH (n = 69) there was an increased DR compared with simple steatosis, which correlated with the stage of fibrosis (r(s) = 0.510, P < .0001). The DR increased with the grade of NASH activity (r(s) = 0.478, P < .0001), grade of portal inflammation (r(s) = 0.445, P < .0001), and extent of hepatocyte replicative arrest (r(s) = 0.446, P < .0001). Replicative arrest was in turn associated with insulin resistance (r(s) = 0.450, P < .0001) and NASH activity (r(s) = 0.452, P < .0001). By multivariate analysis, the extent of DR (odds ratio [OR] = 17.9, P = .016), hepatocyte ballooning (OR = 8.1, P < .0001), and portal inflammation (OR = 3.3, P = .005) were associated independently with fibrosis.Conclusions These findings suggest that an altered replication pathway in active NASH promotes a periportal DR, which in turn may provoke progressive periportal fibrogenesis.

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Crossref · 10.1053/j.gastro.2007.05.012

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  • Higher ductular cell densities have been associated with an increased extent of hepatocyte loss and with the number of monocytes accumulating in inflamed portal areas in MASLD/MASH.

    “Similarly, despite very distinct disease features, higher ductular cell densities have been associated with an increased extent of hepatocyte loss and with the number of monocytes accumulating in inflamed portal areas in MASLD/MASH [175, 206, 207].”
  • Ductular cells express an array of fibrogenic mediators that are upregulated in the human fibrotic liver, most notably PDGFBB, TGFβ1, TGFβ2 and sonic hedgehog, all of which promote myofibroblast activation.

    “Moreover, ductular cells express an array of fibrogenic mediators that have been shown to be upregulated in the human fibrotic liver.52,53 The most notable of these are platelet-derived growth factor (PDGF)BB, TGFβ1 and TGFβ2, and sonic hedgehog, all of which promote myofibroblast activation.[54], [55], [56]”
  • Ductular reaction is frequent in MASH and strongly correlates with fibrosis severity in patients, for reasons that remain unclear.

    “Ductular reaction in MASH is frequent and strongly correlates with fibrosis severity in patients for unclear reasons (32, 33).”

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Research works printed but not linked: 1

  1. Libbrecht L, Desmet V, Van Damme B, Roskams T. Deep intralob- ular extension of human hepatic 'progenitor cells' correlates with parenchymal inflammation in chronic viral hepatitis: can 'progen- itor cells' migrate? J Pathol 2000;192:373-378.

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Authors
Richardson, M. M., Jonsson, J. R., Powell, E. E., Brunt, E. M., Neuschwander–Tetri, B. A., Bhathal, P. S., Dixon, J. B., Weltman, M. D., Tilg, H., Moschen, A. R., Purdie, D. M., Demetris, A. J., & Clouston, A. D.
Affiliations
  • The University of Queensland (AU)
  • University of Pittsburgh (US)
  • The University of Melbourne (AU)
  • Monash University (AU)
  • Nepean Hospital (AU)
  • Innsbruck Medical University (AT)
  • Genentech (US)
Corresponding author
Clouston, Andrew D.
Venue
Gastroenterology
Publisher
Elsevier BV
Published
2007-07
Volume
133
Issue
1
Pages
80-90
ISSN
0016-5085 (ISSN-L)
OpenAlex
W2054912517
Cited by
482
References
57
Citations by year
2026: 10 · 2025: 18 · 2024: 15 · 2023: 19 · 2022: 32 · 2021: 33 · 2020: 22 · 2019: 17 · 2018: 38 · 2017: 31 · 2016: 29 · 2015: 22 · 2014: 37 · 2013: 26 · 2012: 28
FWCI
18.34
Type
journal article
Language
en
Open access
Locations
  • Gastroenterology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
Keywords
nonalcoholic steatohepatitis, non-alcoholic fatty liver disease, liver fibrosis, ductular reaction, hepatic progenitor cells, p21, CK7, insulin resistance, hepatocyte ballooning, portal inflammation, fibrogenesis, liver regeneration, portal fibrosis, portal hypertension
MeSH terms
Adult, Biliary Tract Diseases, Biopsy, Cell Division, Fatty Liver, Female, Hepatitis, Humans, Insulin Resistance, Liver, Liver Cirrhosis, Liver Regeneration, Male, Middle Aged, Stem Cells, Proto-Oncogene Proteins p21(ras), Disease Progression, Hepatocytes

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