Journal
JOURNAL OF FUNCTIONAL FOODS
Volume 27, Issue -, Pages 69-83Publisher
ELSEVIER
DOI: 10.1016/j.jff.2016.08.052
Keywords
Obesity; Adipocytes; Macrophages; Inflammation; Oxidative stress; Insulin-resistance
Categories
Funding
- FONDECYT grant [11110219]
- FONDAP grant [15130011]
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Obesity-associated insulin-resistance is set by a chronic inflammatory state established in the adipose tissue. Chilean native fruits calafate (CA) and maqui (MA) berries present remarkable anti-inflammatory features. Here, we evaluated antioxidant, anti-inflammatory and insulin-sensitizer effects of these fruits in an in vitro inflammatory setting. Differentiated 3T3-L1 cells exposed to conditioned media (CM) from activated macrophages were treated with CA and MA extracts. MA increased metalloproteinase (MMP)-2 activity on day 3, and both CA and MA modulated MMP-9 activity on day 10 of differentiation. In differentiated CM-treated 3T3-L1, extracts increased GSH levels and GSH/GSSG ratio, CA and MA prevented caspase-3 induction, and MA decreased MCP-1, while CA increased IL-6 gene expressions. Finally, MA reverted CM specific IRS-1 phosphorylation, and CA improved insulin stimulated glucose uptake. Thus, treatments with extracts of Chilean native fruits were able to block the development of oxidative stress, inflammation and insulin-resistance in vitro. (C) 2016 Elsevier Ltd. All rights reserved.
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