Acetate protects against intestinal ischemia‐reperfusion injury independent of its cognate free fatty acid 2 receptor

Acetate protects against intestinal ischemia‐reperfusion injury independent of its cognate free fatty acid 2 receptor.

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Item Type: Article
Status: Published
Official URL: https://doi.org/10.1096/fj.202000960R
Journal or Publication Title: The FASEB Journal
Volume: 34
Number: 8
Page Range: pp. 10418-10430
Date: 2020
Divisions: UTS Centre for Inflammation
Depositing User: General Admin
Identification Number: 10.1096/fj.202000960R
ISSN: 0892-6638
Date Deposited: 04 Jan 2021 02:41
Abstract:

Free fatty acid 2 receptor (FFA2) is highly expressed on neutrophils and, when activated by its cognate ligand acetate, generates potent anti‐inflammatory activities. The roles of FFA2 and acetate have not been explored in ischemia‐reperfusion injury (IRI). We therefore examined the function of FFA2 and the therapeutic potential of acetate to reduce tissue injury in an acute model of intestinal IRI. The superior mesenteric artery of wild‐type (WT) and FFA2−/− mice was briefly occluded then reperfused following treatment with acetate or vehicle. The absence of FFA2 resulted in intestinal injury similar to that observed in WT mice, indicating a minimal causal role for FFA2 in this model. Acetate treatment to WT mice prior to ischemia profoundly protected the intestine from IRI‐induced damage. Amelioration of IRI was also observed, although to a lesser extent, when acetate was administered to FFA2−/− mice demonstrating that certain protective effects of acetate were FFA2‐independent. Remarkably, despite the lack of tissue damage following IRI, acetate‐treated mice had markedly increased neutrophil infiltration to the reperfused intestine which was dependent on FFA2. These studies reveal a minimal causal role for FFA2 in intestinal IRI but highlight the novel therapeutic potential for acetate in the amelioration of ischemia‐mediated tissue damage.

Creators:
Creators
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Schofield, Zoe V.
UNSPECIFIED
Wu, Mike C. L.
UNSPECIFIED
Hansbro, Philip M.
UNSPECIFIED
Cooper, Matthew A.
UNSPECIFIED
Woodruff, Trent M.
UNSPECIFIED
Last Modified: 04 Jan 2021 02:41
URI: https://eprints.centenary.org.au/id/eprint/768

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