Cited by 727Liver Disease Diagnosis and TreatmentBariatric Surgery and OutcomesLiver physiology and pathology

Nonalcoholic fatty liver disease: Improvement in liver histological analysis with weight loss

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Dixon, John B., Bhathal, Prithi S., Hughes, Norman R., O'Brien, Paul E.·2004·Hepatology

Abstract

The effect of significant weight loss on nonalcoholic fatty liver disease remains unclear. In this case series of 36 selected obese patients, we examined the effect of weight loss on nonalcoholic fatty liver disease, including nonalcoholic steatohepatitis (NASH) and hepatic fibrosis. These 36 patients (11 males, 25 females) had paired liver biopsies, the first at the time of laparoscopic adjustable gastric band placement and the second after weight loss. Second biopsies were obtained from two groups: those requiring a subsequent laparoscopic procedure (n = 19) and those with index biopsy score of 2 or greater for zone 3-centric hepatic fibrosis (n = 17). All biopsies were scored, blinded to the patient's identity and clinical condition, for individual histological features and for NASH stage and grade. Initial biopsies demonstrated NASH in 23 patients and steatosis in 12 patients. Repeat biopsies were taken at 25.6 ± 10 months (range, 9-51 months) after band placement. Mean weight loss was 34.0 ± 17 kg, and percentage of excess weight loss was 52 ± 17%. There were major improvements in lobular steatosis, necroinflammatory changes, and fibrosis at the second biopsy ( P < .001 for all). Portal abnormalities remained unchanged. Only four of the repeat biopsies fulfilled the criteria for NASH. There were 18 patients with an initial fibrosis score of 2 or more compared with 3 patients at follow-up ( P < .001). Those with the metabolic syndrome (n = 23) had more extensive changes before surgery and greater improvement with weight loss. In conclusion , weight loss after surgery provides major improvement or resolution of obesity and metabolic syndrome-associated abnormal liver histological features in severely obese subjects. (Hepatology 2004;39:1647-1654.)

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  1. [20]20. Freedman R, Uwaifo GI, Lutchman G, Promrat K, Kleiner D, Yanovski JA, et al. Changes in insulin sensitivity and improvements in liver histology in patients with non-alcoholic steatohepatitis (NASH) treated with Piogli- tozone. Diabetes 2003;52:A76.

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Authors
Dixon, J. B., Bhathal, P. S., Hughes, N. R., & O'Brien, P. E.
Affiliations
The University of Melbourne (AU)
Corresponding author
Dixon, John B.
Venue
Hepatology
Published
2004-06
Volume
39
Issue
6
Pages
1647-1654
ISSN
0270-9139 (ISSN-L)
OpenAlex
W2063671857
Cited by
727
References
35
Citations by year
2026: 5 · 2025: 11 · 2024: 11 · 2023: 11 · 2022: 19 · 2021: 27 · 2020: 20 · 2019: 31 · 2018: 26 · 2017: 36 · 2016: 32 · 2015: 44 · 2014: 33 · 2013: 38 · 2012: 38
FWCI
40.65
Type
journal article
Language
en
Open access
Locations
  • Hepatology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
Keywords
non-alcoholic fatty liver disease, nonalcoholic steatohepatitis, liver fibrosis, weight loss, laparoscopic adjustable gastric band, bariatric surgery, obesity, metabolic syndrome, liver histopathology, steatosis, necroinflammation
MeSH terms
Adult, Fatty Liver, Female, Humans, Male, Weight Loss

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