Agaricus brasiliensis Mushroom Protects Against Sepsis by Alleviating Oxidative and Inflammatory Response

Front Immunol. 2020 Jul 1;11:1238. doi: 10.3389/fimmu.2020.01238. eCollection 2020.

Abstract

Sepsis is characterized by the host's dysregulated immune response to an infection followed by a potentially fatal organ dysfunction. Although there have been some advances in the treatment of sepsis, mainly focused on broad-spectrum antibiotics, mortality rates remain high, urging for the search of new therapies. Oxidative stress is one of the main features of septic patients, so antioxidants can be a good alternative treatment. Agaricus brasiliensis is a nutraceutical rich in bioactive compounds such as polyphenols and polysaccharides, exhibiting antioxidant, antitumor, and immunomodulatory activities. Here, we investigated the immunomodulatory and antioxidant effects of A. brasilensis aqueous extract in the cecal ligation and puncture (CLP) sepsis model. Our data showed that aqueous extract of A. brasiliensis reduced systemic inflammatory response and improved bacteria clearance and mice survival. In addition, A brasiliensis decreased the oxidative stress markers in serum, peritoneal cavity, heart and liver of septic animals, as well as ROS production (in vitro and in vivo) and tert-Butyl hydroperoxide-induced DNA damage in peripheral blood mononuclear cells from healthy donors in vitro. In conclusion, the aqueous extract of A. brasiliensis was able to increase the survival of septic animals by a mechanism involving immunomodulatory and antioxidant protective effects.

Keywords: Agaricus brasiliensis; CLP; antioxidant; immunomodulator; polymicrobial sepsis; protection; sun mushroom.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Agaricales / chemistry*
  • Animals
  • Anti-Inflammatory Agents / chemistry*
  • Anti-Inflammatory Agents / pharmacology*
  • Antioxidants / chemistry
  • Antioxidants / pharmacology*
  • Biomarkers
  • Blood Cell Count
  • Cytokines / metabolism
  • Disease Models, Animal
  • Humans
  • Immunomodulation / drug effects
  • Male
  • Mice
  • Nitric Oxide / metabolism
  • Oxidation-Reduction / drug effects
  • Oxidative Stress / drug effects
  • Protective Agents / chemistry
  • Protective Agents / pharmacology
  • Reactive Oxygen Species / metabolism
  • Sepsis / diagnosis
  • Sepsis / drug therapy
  • Sepsis / etiology

Substances

  • Anti-Inflammatory Agents
  • Antioxidants
  • Biomarkers
  • Cytokines
  • Protective Agents
  • Reactive Oxygen Species
  • Nitric Oxide