Euterpe edulis Extract but Not Oil Enhances Antioxidant Defenses and Protects against Nonalcoholic Fatty Liver Disease Induced by a High-Fat Diet in Rats

Oxid Med Cell Longev. 2016:2016:8173876. doi: 10.1155/2016/8173876. Epub 2016 Jun 23.

Abstract

We investigated the effects of E. edulis bioproducts (lyophilized pulp [LEE], defatted lyophilized pulp [LDEE], and oil [EO]) on nonalcoholic fatty liver disease (NAFLD) induced by a high-fat diet (HFD) in rats. All products were chemically analyzed. In vivo, 42 rats were equally randomized into seven groups receiving standard diet, HFD alone or combined with EO, LEE, or LDEE. After NAFLD induction, LEE, LDEE, or EO was added to the animals' diet for 4 weeks. LEE was rich in polyunsaturated fatty acids. From LEE degreasing, LDEE presented higher levels of anthocyanins and antioxidant capacity in vitro. Dietary intake of LEE and especially LDEE, but not EO, attenuated diet-induced NAFLD, reducing inflammatory infiltrate, steatosis, and lipid peroxidation in liver tissue. Although both E. edulis bioproducts were not hepatotoxic, only LDEE presented sufficient benefits to treat NAFLD in rats, possibly by its low lipid content and high amount of phenols and anthocyanins.

MeSH terms

  • Animals
  • Antioxidants / pharmacology
  • Antioxidants / therapeutic use*
  • Biomarkers / metabolism
  • Diet, High-Fat
  • Euterpe / chemistry*
  • Fatty Acids / analysis
  • Freeze Drying
  • Liver / drug effects
  • Liver / metabolism
  • Liver / pathology
  • Male
  • Non-alcoholic Fatty Liver Disease / blood
  • Non-alcoholic Fatty Liver Disease / drug therapy*
  • Non-alcoholic Fatty Liver Disease / pathology
  • Oxidation-Reduction
  • Phytochemicals / analysis
  • Plant Extracts / pharmacology
  • Plant Extracts / therapeutic use*
  • Plant Oils / pharmacology
  • Plant Oils / therapeutic use*
  • Protective Agents / pharmacology
  • Protective Agents / therapeutic use*
  • Rats, Wistar
  • Vitamin E / analysis

Substances

  • Antioxidants
  • Biomarkers
  • Fatty Acids
  • Phytochemicals
  • Plant Extracts
  • Plant Oils
  • Protective Agents
  • Vitamin E