title: Liver fibrosis quantified by image analysis in methotrexate-treated patients with psoriasis.
abstract: BACKGROUND
  Histopathologic monitoring of the liver is mandatory during methotrexate (MTX) treatment. Fibrosis is an important histologic feature of liver damage.
  
  
  OBJECTIVE
  Our purpose was to supply an independent measure to histopathologic grading of hepatic changes in MTX-treated patients with psoriasis.
  
  
  METHODS
  Forty-six liver biopsy specimens from 26 patients with psoriasis evaluated for or treated with MTX were histopathologically classified and their collagen content quantified by image analysis after staining with Sirius Red F3BA.
  
  
  RESULTS
  Fibrosis in normal liver biopsy specimens (controls) amounted to 0.9% +/- 0.1% and in patients with psoriasis varied between 9.3% +/- 1.4% and 24.0% +/- 4.9%. An effect of MTX on liver fibrosis was not discerned. No correlation was obtained between fibrosis and histologic grades, intake of alcohol, lean tissue mass, or age of the patient.
  
  
  CONCLUSIONS
  Two changes occurred in the psoriatic liver; the collagen content was increased at least tenfold when compared with controls, and significant heterogeneity in collagen content was present among patients (p < 0.001).
authors.affiliation: Department of Dermatology, Karolinska Institute, Karolinska Hospital, Stockholm, Sweden.
authors.forename: C
authors.initials: C
authors.lastname: Nohlgård
authors.forename: C A
authors.initials: CA
authors.lastname: Rubio
authors.forename: Y
authors.initials: Y
authors.lastname: Kock
authors.forename: H
authors.initials: H
authors.lastname: Hammar
mesh_terms: D000328:Adult; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects; D001706:Biopsy; D005260:Female; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008103:Liver Cirrhosis / Q000139:chemically induced* / Q000473:pathology; D008297:Male; D008727:Methotrexate / Q000009:adverse effects* / Q000627:therapeutic use; D008875:Middle Aged; D011565:Psoriasis / Q000188:drug therapy*; D013194:Staining and Labeling; D013223:Statistics as Topic
chemical_list: D008727:Methotrexate