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European Journal of Nutrition

, Volume 58, Issue 4, pp 1735–1745 | Cite as

Histological improvement of non-alcoholic steatohepatitis with a prebiotic: a pilot clinical trial

  • Marc R. Bomhof
  • Jill A. Parnell
  • Hena R. Ramay
  • Pam Crotty
  • Kevin P. Rioux
  • Chris S. Probert
  • Saumya Jayakumar
  • Maitreyi Raman
  • Raylene A. ReimerEmail author
Original Contribution

Abstract

Purpose

In obesity and diabetes the liver is highly susceptible to abnormal uptake and storage of fat. In certain individuals hepatic steatosis predisposes to the development of non-alcoholic steatohepatitis (NASH), a disease marked by hepatic inflammation and fibrosis. Although the precise pathophysiology of NASH is unknown, it is believed that the gut microbiota-liver axis influences the development of this disease. With few treatment strategies available for NASH, exploration of gut microbiota-targeted interventions is warranted. We investigated the therapeutic potential of a prebiotic supplement to improve histological parameters of NASH.

Methods

In a placebo-controlled, randomized pilot trial, 14 individuals with liver-biopsy-confirmed NASH [non-alcoholic fatty liver activity score (NAS) ≥ 5] were randomized to receive oligofructose (8 g/day for 12 weeks followed by 16 g/day for 24 weeks) or isocaloric placebo for 9 months. The primary outcome measure was the change in liver biopsy NAS score and the secondary outcomes included changes in body weight, body composition, glucose tolerance, inflammatory markers, and gut microbiota.

Results

Independent of weight loss, oligofructose improved liver steatosis relative to placebo and improved overall NAS score (P = 0.016). Bifidobacterium was enhanced by oligofructose, whereas bacteria within Clostridium cluster XI and I were reduced with oligofructose (P < 0.05). There were no adverse side effects that deterred individuals from consuming oligofructose for treatment of this disease.

Conclusions

Independent of other lifestyle changes, prebiotic supplementation reduced histologically-confirmed steatosis in patients with NASH. Larger follow-up studies are warranted.

Clinical Trial

This trial was registered at Clinicaltrials.com as NCT03184376.

Keywords

Non-alcoholic steatohepatitis Gut microbiota Prebiotic Oligofructose 

Notes

Acknowledgements

The authors would like to thank all of the individuals who volunteered their time to participate and contribute to this study. The authors also thank Matt Workentine, Faculty of Veterinary Medicine, University of Calgary, for his technical assistance with 16S sequencing analysis.

Author contributions

MRB executed the study, collected data, analyzed data, and prepared the manuscript; JAP designed the study and obtained funding; HRR analyzed 16S gut microbiota sequencing data; PC collected data; KPR, SJ, and MR designed the study, collected data, and recruited participants; CSP performed VOC analysis; RAR designed the study, obtained funding and had final responsibility for the study. All authors had access to the study data and reviewed and approved the final manuscript.

Funding

This work was supported by a research grant from the Canadian Institutes of Health Research (MOP-136889) and a University of Calgary Seed Grant. MRB was supported by Alberta Innovates Health Solutions (AIHS) and an Honorary Izaak Walton Killam Doctoral Scholarship.

Compliance with ethical standards

Conflict of interest

MRB, JAP, HRR, PC, KPR, CSP, SJ, and MR declare no conflict of interest. RAR previously held a research grant from Beneo-Orafti, Inc., manufacturer of Orafti P95, for a project unrelated to this study.

Supplementary material

394_2018_1721_MOESM1_ESM.docx (437 kb)
Supplementary material 1 (DOCX 436 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Marc R. Bomhof
    • 1
    • 2
  • Jill A. Parnell
    • 3
  • Hena R. Ramay
    • 4
  • Pam Crotty
    • 5
  • Kevin P. Rioux
    • 5
    • 6
  • Chris S. Probert
    • 7
  • Saumya Jayakumar
    • 5
  • Maitreyi Raman
    • 5
  • Raylene A. Reimer
    • 2
    • 8
    Email author
  1. 1.Department of Kinesiology and Physical EducationUniversity of LethbridgeLethbridgeCanada
  2. 2.Faculty of KinesiologyUniversity of CalgaryCalgaryCanada
  3. 3.Department of Health and Physical EducationMount Royal UniversityCalgaryCanada
  4. 4.International Microbiome Centre, Cumming School of Medicine, Health Sciences CentreUniversity of CalgaryCalgaryCanada
  5. 5.Division of Gastroenterology and Hepatology, Department of MedicineUniversity of CalgaryCalgaryCanada
  6. 6.Immunology and Infectious Diseases, Department of Microbiology1863 Health Sciences CentreCalgaryCanada
  7. 7.Institute of Translational MedicineUniversity of LiverpoolLiverpoolUK
  8. 8.Department of Biochemistry and Molecular BiologyUniversity of CalgaryCalgaryCanada

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