Cited by 220Liver Disease Diagnosis and TreatmentBariatric Surgery and OutcomesAlcohol Consumption and Health Effects

Weight Loss and Non-alcoholic Fatty Liver Disease: Falls In Gamma-Glutamyl Transferase Concentrations are Associated with Histologic Improvement

Dixon, John, Bhathal, Prithi, O'Brien, Paul·2006·Obesity Surgery

Abstract

Background The ability for aminotransferase levels to track histological features of non-alcoholic fatty liver disease (NAFLD) with weight loss has not been examined. Methods We examined the effect of weight loss following laparoscopic adjustable gastric banding surgery on the histological features of NAFLD and plasma aminotransferase concentrations (AST, ALT and GGT) in 60 (12M, 48F) selected severely obese patients. All 120 paired biopsies were de-identified and scored for lobular steatosis, fibrosis, inflammation, Mallory bodies and NASH. Results 30 patients (50%) had baseline histological features of non-alcoholic steatohepatitis (NASH). Repeat biopsies were taken at 29.5+/-10 months after baseline. Mean weight loss was 31.5+/-18 kg. There were improvements in AST, ALT, GGT, lobular steatosis, inflammation and fibrosis between baseline and follow-up (P<0.001 for all). Only 6 (10%) of repeat biopsies showed NASH. No change in aminotransferase concentrations predicted the change in steatosis, but changes in AST and GGT predicted improved scores for inflammation, fibrosis, Mallory bodies and NASH. The lowering of GGT best predicted the improvements in inflammation, fibrosis and NASH. Conclusion With weight loss, falls in GGT and, to a lesser extent, in AST, are predictive of improved lobular inflammation and fibrosis, key prognostic features of NAFLD.

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Crossref · 10.1381/096089206778663805

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Authors
Dixon, J., Bhathal, P., & O'Brien, P.
Affiliations
  • The Alfred Hospital (AU)
  • The University of Melbourne (AU)
Venue
Obesity Surgery
Published
2006-10-01
Volume
16
Issue
10
Pages
1278-1286
ISSN
  • 0960-8923 (ISSN-L)
  • 1708-0428
OpenAlex
W2038159864
Cited by
212
References
17
Citations by year
2026: 2 · 2025: 3 · 2024: 4 · 2023: 8 · 2022: 15 · 2021: 10 · 2020: 10 · 2019: 14 · 2018: 8 · 2017: 9 · 2016: 12 · 2015: 13 · 2014: 11 · 2013: 14 · 2012: 11
FWCI
8.07
Type
journal article
Language
en
Open access
closed
Locations
  • Obesity Surgery (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Alcohol Consumption and Health Effects
Keywords
non-alcoholic fatty liver disease, nonalcoholic steatohepatitis
MeSH terms
Adult, Alanine Transaminase, Transaminases, Aspartate Aminotransferases, Fatty Liver, Female, Fibrosis, gamma-Glutamyltransferase, Humans, Liver, Male, Middle Aged, Obesity, Morbid, Postoperative Period, Gastric Bypass, Weight Loss, Comorbidity

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