Cited by 173Liver Disease Diagnosis and TreatmentAdvanced MRI Techniques and ApplicationsOrgan Transplantation Techniques and Outcomes

Effect of Weight Loss on Magnetic Resonance Imaging Estimation of Liver Fat and Volume in Patients With Nonalcoholic Steatohepatitis

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Patel, Niraj S., Doycheva, Iliana, Peterson, Michael R., Hooker, Jonathan, Kisselva, Tatiana, Schnabl, Bernd, Seki, Ekihiro, Sirlin, Claude B. +1 more·2015·Clinical Gastroenterology and Hepatology

Abstract

Background & aims Little is known about how weight loss affects magnetic resonance imaging (MRI) of liver fat and volume or liver histology in patients with nonalcoholic steatohepatitis (NASH). We measured changes in liver fat and liver volume associated with weight loss by using an advanced MRI method.Methods We analyzed data collected from a previous randomized controlled trial in which 43 adult patients with biopsy-proven NASH underwent clinical evaluation, biochemical tests, and MRI and liver biopsy analyses at the start of the study and after 24 weeks. We compared data between patients who did and did not have at least 5% decrease in body mass index (BMI) during the study period.Results Ten of 43 patients had at least a 5% decrease in BMI during the study period. These patients had a significant decrease in liver fat, which was based on MRI proton density fat fraction estimates (18.3% ± 7.6% to 13.6% ± 13.6%, P = .03), a relative 25.5% reduction. They also had a significant decrease in liver volume (5.3%). However, no significant changes in levels of alanine aminotransferase or aspartate aminotransferase were observed with weight loss. Thirty-three patients without at least 5% decrease in BMI had insignificant increases in estimated liver fat fraction and liver volume.Conclusions A reduction in BMI of at least 5% is associated with significant decrease in liver fat and volume in patients with biopsy-proven NASH. These data should be considered in assessing effect size in studies of patients with nonalcoholic fatty liver disease or obesity that use MRI-estimated liver fat and volume as end points.

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Authors
Patel, N. S., Doycheva, I., Peterson, M. R., Hooker, J., Kisselva, T., Schnabl, B., Seki, E., Sirlin, C. B., & Loomba, R.
Affiliations
UC San Diego Health System (US)
Corresponding author
Loomba, Rohit
Venue
Clinical Gastroenterology and Hepatology
Publisher
Elsevier BV
Published
2015-03
Volume
13
Issue
3
Pages
561-568.e1
ISSN
1542-3565 (ISSN-L)
OpenAlex
W2141246254
Cited by
173
References
41
Citations by year
2026: 9 · 2025: 12 · 2024: 21 · 2023: 21 · 2022: 13 · 2021: 14 · 2020: 23 · 2019: 14 · 2018: 11 · 2017: 11 · 2016: 14 · 2015: 7 · 2014: 3
FWCI
8.82
Type
journal article
Language
en
Open access
Locations
  • Clinical Gastroenterology and Hepatology (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute on Alcohol Abuse and Alcoholism (R01AA020172, R01AA02017204)
  • National Institute of Diabetes and Digestive and Kidney Diseases (R24DK080506, DK 080506, R01DK088925, K23-DK090303-02, K23DK090303, R01DK085252)
  • National Institute of Environmental Health Sciences (P42ES010337)
  • National Center for Research Resources (UL1RR031980)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced MRI Techniques and Applications
  • Health Sciences › Medicine › Surgery › Organ Transplantation Techniques and Outcomes
Keywords
nonalcoholic steatohepatitis, weight loss, liver fat, liver volume, proton density fat fraction, body mass index, obesity, non-alcoholic fatty liver disease, liver histopathology, alanine aminotransferase, aspartate aminotransferase
MeSH terms
Adult, Aged, Biopsy, Fats, Female, Histocytochemistry, Humans, Liver, Magnetic Resonance Imaging, Male, Middle Aged, Radiography, Weight Loss, Body Mass Index, Non-alcoholic Fatty Liver Disease

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