Renin-angiotensin system and fibrosis in non-alcoholic fatty liver disease

George B. Goh, Mangesh R. Pagadala, Jaividhya Dasarathy, Aynur Unalp-Arida, Ruth Sargent, Carol Hawkins, Achuthan Sourianarayanane, Amer Khiyami, Lisa Yerian, Rish Pai, Arthur J. Mccullough, Srinivasan Dasarathy

Research output: Contribution to journalArticle

Abstract

Background & Aims: Therapeutic options are limited for patients with non-alcoholic fatty liver disease (NAFLD). One promising approach is the attenuation of necroinflammation and fibrosis by inhibition of the renin-angiotensin system (RAS). We explored whether the risk of fibrosis was associated with the use of commonly used medications in NAFLD patients with hypertension. Specifically, we sought to determine the association between RAS blocking agents and severity of hepatic fibrosis in NAFLD patients with hypertension. Methods: Cross-sectional study where clinical information including demographics, anthropometry, medical history, concomitant medication use, biochemical and histological features were ascertained in 290 hypertensive patients with biopsy proven NAFLD followed at two hepatology outpatient clinics. Stage of hepatic fibrosis was compared in patients with and without RAS blocker use. Other risk factors for fibrosis were evaluated from the electronic medical records and patient follow-up. Results: Baseline characteristics of hypertensive patients treated with and without RAS blockers were similar except for less ballooning (1.02 vs. 1.31, P = 0.001) and lower fibrosis stage (1.63 vs. 2.16, P = 0.002) in patients on RAS blockers On multivariate analysis, advancing age (OR: 1.04; 95%CI: 1.01-1.06, P = 0.012) and presence of diabetes (OR: 2.55; 95%CI: 1.28-5.09, P = 0.008) had an independent positive association, while use of RAS blockers (OR: 0.37; 95%CI: 0.21-0.65, P = 0.001) and statins (OR: 0.52; 95%CI: 0.29-0.93, P = 0.029) had a negative association with advanced fibrosis. Conclusion: Hypertensive patients with NAFLD on baseline RAS blockers had less advanced hepatic fibrosis suggesting a beneficial effect of RAS blockers in NAFLD.

Original languageEnglish (US)
Pages (from-to)979-985
Number of pages7
JournalLiver International
Volume35
Issue number3
DOIs
StatePublished - Mar 1 2015

Keywords

  • Liver fibrosis
  • NAFLD
  • Renin-angiotensin system

ASJC Scopus subject areas

  • Hepatology

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    Goh, G. B., Pagadala, M. R., Dasarathy, J., Unalp-Arida, A., Sargent, R., Hawkins, C., Sourianarayanane, A., Khiyami, A., Yerian, L., Pai, R., Mccullough, A. J., & Dasarathy, S. (2015). Renin-angiotensin system and fibrosis in non-alcoholic fatty liver disease. Liver International, 35(3), 979-985. https://doi.org/10.1111/liv.12611