[PDF][PDF] Lipoxin A4 attenuates obesity-induced adipose inflammation and associated liver and kidney disease

E Börgeson, AMF Johnson, YS Lee, A Till, GH Syed… - Cell metabolism, 2015 - cell.com
E Börgeson, AMF Johnson, YS Lee, A Till, GH Syed, ST Ali-Shah, PJ Guiry, J Dalli, RA Colas
Cell metabolism, 2015cell.com
The role of inflammation in obesity-related pathologies is well established. We investigated
the therapeutic potential of LipoxinA 4 (LXA 4: 5 (S), 6 (R), 15 (S)-trihydroxy-7E, 9E, 11Z,
13E,-eicosatetraenoic acid) and a synthetic 15 (R)-Benzo-LXA 4-analog as interventions in
a 3-month high-fat diet (HFD; 60% fat)-induced obesity model. Obesity caused distinct
pathologies, including impaired glucose tolerance, adipose inflammation, fatty liver, and
chronic kidney disease (CKD). Lipoxins (LXs) attenuated obesity-induced CKD, reducing …
Summary
The role of inflammation in obesity-related pathologies is well established. We investigated the therapeutic potential of LipoxinA4 (LXA4:5(S),6(R),15(S)-trihydroxy-7E,9E,11Z,13E,-eicosatetraenoic acid) and a synthetic 15(R)-Benzo-LXA4-analog as interventions in a 3-month high-fat diet (HFD; 60% fat)-induced obesity model. Obesity caused distinct pathologies, including impaired glucose tolerance, adipose inflammation, fatty liver, and chronic kidney disease (CKD). Lipoxins (LXs) attenuated obesity-induced CKD, reducing glomerular expansion, mesangial matrix, and urinary H2O2. Furthermore, LXA4 reduced liver weight, serum alanine-aminotransferase, and hepatic triglycerides. LXA4 decreased obesity-induced adipose inflammation, attenuating TNF-α and CD11c+ M1-macrophages (MΦs), while restoring CD206+ M2-MΦs and increasing Annexin-A1. LXs did not affect renal or hepatic MΦs, suggesting protection occurred via attenuation of adipose inflammation. LXs restored adipose expression of autophagy markers LC3-II and p62. LX-mediated protection was demonstrable in adiponectin−/− mice, suggesting that the mechanism was adiponectin independent. In conclusion, LXs protect against obesity-induced systemic disease, and these data support a novel therapeutic paradigm for treating obesity and associated pathologies.
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