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Heat-Killed Lactobacillus salivarius and Lactobacillus johnsonii Reduce Liver Injury Induced by Alcohol In Vitro and In Vivo

  • 2016-10-31
  • Molecules 21(11)
    • C. Chuang
    • Cheng-Chih Tsai
    • E. Lin
    • Chin-Shiu Huang
    • Yun-Yu Lin
    • Chuan-Ching Lan
    • Chun-Chih Huang

Abstract

The aim of the present study was to determine whether Lactobacillus salivarius (LS) and Lactobacillus johnsonii (LJ) prevent alcoholic liver damage in HepG2 cells and rat models of acute alcohol exposure. In this study, heat-killed LS and LJ were screened from 50 Lactobacillus strains induced by 100 mM alcohol in HepG2 cells. The severity of alcoholic liver injury was determined by measuring the levels of aspartate transaminase (AST), alanine transaminase (ALT), gamma-glutamyl transferase (γ-GT), lipid peroxidation, triglyceride (TG) and total cholesterol. Our results indicated that heat-killed LS and LJ reduced AST, ALT, γ-GT and malondialdehyde (MDA) levels and outperformed other bacterial strains in cell line studies. We further evaluated these findings by administering these strains to rats. Only LS was able to reduce serum AST levels, which it did by 26.2%. In addition LS significantly inhibited serum TG levels by 39.2%. However, both strains were unable to inhibit ALT levels. In summary, we demonstrated that heat-killed LS and LJ possess hepatoprotective properties induced by alcohol both in vitro and in vivo.

Keywords: Lactobacillus johnsonii; Lactobacillus salivariu; alcoholic liver disease; heat-killed Lactobacillus; malondialdehyde; γ-glutamyl transferase.

Research Insights

SupplementHealth OutcomeEffect TypeEffect Size
Lactobacillus johnsonii LJ09Reduced Alcohol-Induced Liver InjuryBeneficial
Moderate
Lactobacillus johnsonii LJ09Reduced AST LevelsBeneficial
Moderate
Lactobacillus johnsonii LJ09Reduced Serum Triglyceride LevelsBeneficial
Moderate

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